WO2002101457A1 - Dispositif d'eclairage et dispositif d'affichage d'images de type projection - Google Patents
Dispositif d'eclairage et dispositif d'affichage d'images de type projection Download PDFInfo
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- WO2002101457A1 WO2002101457A1 PCT/JP2002/005745 JP0205745W WO02101457A1 WO 2002101457 A1 WO2002101457 A1 WO 2002101457A1 JP 0205745 W JP0205745 W JP 0205745W WO 02101457 A1 WO02101457 A1 WO 02101457A1
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- WIPO (PCT)
- Prior art keywords
- light
- wavelength
- fly
- selective optical
- primary colors
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2026—Gas discharge type light sources, e.g. arcs
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/10—Simultaneous recording or projection
- G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
Definitions
- the present invention provides an illumination device for emitting light of three primary colors including light of wavelength components corresponding to the three primary colors: if: and the light of three primary colors emitted from the illumination device
- the present invention relates to a projection-type image display device that displays a color image by projecting a light.
- red (R) obtained by using three image display panels such as a liquid crystal display panel (LCD) and separating white light with a color separation mirror (dichroic mirror) in each of these image display panels
- a projector system has been proposed that allows each primary color light of green (G) and blue (B) to be incident correspondingly, and further combines the luminous flux transmitted through these image display panels and projects it on a screen. ing.
- adjustment of the white chromaticity of the projection light that is, adjustment of the white balance can be realized by adjusting the light amount ratio of each primary color light.
- adjusting the light amount ratio of each primary color light there is a method of changing the electric drive level of the display device of each primary color channel depending on the channel.
- a transmissive filter such as an ND (Neutral Density) filter in the optical path of the channel that needs light reduction.
- the contrast should be higher than the above-mentioned electrical adjustment method. And become possible.
- this method requires an optical light reduction means such as an ND filter by the number of channels required for light reduction, which complicates the configuration, resulting in an increase in the number of parts and manufacturing processes. There's a problem. Also, with regard to contrast, we can not expect the performance beyond the contrast obtained without lowering the LCD panel drive level.
- the lighting equipment and the projection equipment that can adjust the white chromaticity of the projection light with a simple configuration, and can realize good contrast, have not been realized yet.
- Disclosure of the Invention Therefore, the present invention has been made in view of the above-described conventional circumstances, and it is possible to adjust the white chromaticity of the projection light with a simple configuration, and to realize a good contrast. It aims at providing a lighting installation and a projection type video display.
- An illumination device for achieving the above object is an illumination device that emits light of three primary colors including light of wavelength components corresponding to the three primary colors, comprising: a light source for emitting light of three primary colors; Of the three primary colors and selectively attenuates or shields the light of the wavelength component corresponding to at least one of the three primary colors, and transmits the light of the other wavelength components. And a wavelength selective optical stop filter provided with a region forming a predetermined stop.
- the illumination apparatus configured as described above is a wavelength selective optical system including a light separating filter such as a dichroic filter designed to change the diameter of the optical diaphragm according to the wavelength component of the illumination light.
- a light separating filter such as a dichroic filter designed to change the diameter of the optical diaphragm according to the wavelength component of the illumination light.
- An illumination device for achieving the above object is an illumination device K for emitting three primary color lights including light of wavelength components corresponding to the three primary colors, and a light source for emitting three primary color lights; Of the three primary color lights emitted from the light source, A pair of fly eye lenses for equalizing the output of the three primary colors by transmitting through a plurality of lens elements, and a pair of fly eye lenses disposed adjacent to the fly eye lens on the side far from the light source A wavelength selective optical filter provided with a region for selectively reducing or blocking light of a wavelength component corresponding to at least one of three primary colors contained in light and transmitting light of other wavelength components
- the light source uses a wavelength selective optical filter consisting of a spectral filter such as a dichroic filter designed to change the transmission area of the optical filter according to the wavelength component of the illumination light. It is possible to reduce the brightness of the primary color light and to adjust the brightness of the primary color light freely.
- a wavelength selective optical stop filter provided with the light source; color separation means for separating the three primary color lights output from the wavelength selective optical stop filter into light of wavelength components corresponding to the respective three primary colors;
- the three image display panels that modulate the light of the wavelength component corresponding to each of the three primary colors based on the video signal, and the light of the wavelength component corresponding to each of the three primary colors modulated by each image display panel Color combining method to be combined into one, and color combination It is characterized in further comprising a projection lens for projecting the light synthesized by means on the screen.
- the illumination device is a wavelength including a spectral filter such as a dichroic filter designed to change the diameter of the optical diaphragm according to the wavelength component of the illumination light.
- a spectral filter such as a dichroic filter designed to change the diameter of the optical diaphragm according to the wavelength component of the illumination light.
- a wavelength selective optical filter that selectively attenuates or shields light of wavelength components corresponding to colors and is provided with a region that transmits light of other wavelength components;
- Color separation means for separating primary color light into light of wavelength components corresponding to the respective three primary colors, and light of wavelength components corresponding to each of the three primary colors separated by the color separation means are modulated based on the video signal
- the lighting device is a wavelength including a spectral filter such as a dichroic filter designed to change the transmission region of the optical filter according to the wavelength component of the illumination light.
- a spectral filter such as a dichroic filter designed to change the transmission region of the optical filter according to the wavelength component of the illumination light.
- FIG. 1 is a block diagram showing an optical system of a liquid crystal projector 1 to which the present invention is applied.
- FIG. 2 is a view for explaining a fly's eye lens and a wavelength selective optical stop filter.
- FIG. 3 is a plan view of the wavelength selective optical stop filter in FIG. 1 as viewed from the lamp side.
- FIG. 4 is a characteristic diagram showing the relationship between the wavelength and the transmittance of a wavelength selective optical stop filter that transmits light in all bands.
- FIG. 5 is a characteristic diagram showing the relationship between the wavelength and the transmittance of a wavelength selective optical stop filter that transmits only red light.
- FIG. 6 is a diagram showing a state in which the blue light and the green light can pass through only to the region A and is dimmed.
- FIG. 7 is a diagram showing an optical path of red light.
- FIG. 8 is a plan view showing a wavelength selective optical stop filter subjected to area division in a form roughly fitted to the outline of each lens element of a fly's eye lens.
- FIG. 9 is a plan view showing an example of a wavelength selective optical stop filter divided into three regions.
- FIG. 10 is a plan view showing an example of a wavelength selective optical stop filter subjected to mosaic division.
- FIG. 11 is a plan view showing an example of the wavelength selective light filter randomly obtained for each small area.
- FIG. 12 is a configuration diagram showing a modified example to which the present invention is applied in which the fly-eye lens and the PS converter are removed and the wavelength selective optical stop filter is formed on the main surface of the main condenser lens.
- FIG. 13 is a block diagram showing another modification to which the present invention is applied to make the optical path length uniform by using a mirror instead of the relay lens.
- FIG. 14 is a configuration diagram showing still another modified example to which the present invention for combining primary color light using mirrors instead of cross prisms is applied.
- FIG. 15 is a configuration diagram showing still another modified example to which the present invention having an optical system using a reflective liquid crystal panel is applied.
- BEST MODE FOR CARRYING OUT THE INVENTION hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
- the projection type image display device to which the present invention is applied is an illumination device 2 for emitting illumination light including three primary color lights and illumination light emitted from the illumination device 2 for three primary colors green (G Main condenser lens 6, leading to the liquid crystal panel 10 corresponding to each primary color luminous flux, blue (B), red (R), lead dichroic mirror 7, 8 1, 1 5, 1 7, channel condenser lens 9, 1 2, 1 8 Laerens: 1. 4, 16 and cross prism 20 and projection lens 2 1 are provided.
- G Main condenser lens 6, leading to the liquid crystal panel 10 corresponding to each primary color luminous flux, blue (B), red (R), lead dichroic mirror 7, 8 1, 1 5, 1 7, channel condenser lens 9, 1 2, 1 8 Laerens: 1. 4, 16 and cross prism 20 and projection lens 2 1 are provided.
- optical systems such as the illumination device 2, the liquid crystal panels 10 0, 13 3, and the main condenser lens 6 are fixed and disposed in a housing (not shown).
- the illumination device 2 includes a lamp 1 for emitting three primary colors, a pair of fly-eye lenses 3 and 4 for equalizing the illuminance distribution of the three primary colors, a PS converter 5 for aligning polarization components of the three primary colors, and wavelength selective optics An iris filter 22 is provided.
- the lamp 1 emits, as illumination light, three primary color lights including red light, blue light and green light, which are required for color image display.
- the lamp 1 includes a light emitter 1 a that emits light of three primary colors, and a reflector l b that reflects and condenses light emitted from the light emitter.
- the luminous body la for example, an extra-high pressure mercury lamp, a halogen lamp, a metal halide lamp, a xenon lamp, etc. are used.
- the reflector l b is preferably shaped to have a high light collection efficiency, for example, a shape of a rotationally symmetric surface such as a rotation parabolic mirror.
- the fly-eye lenses 3 and 4 equalize the illuminance distribution of the light emitted from the lamp 1 within the effective area of the liquid crystal panels 10, 1 3 and 1 9, that is, the display area. It is supposed to illuminate.
- Such fly eye lenses 3 and 4 are also referred to as a microphone lens array, and are formed by combining convex lenses, which are a plurality of small lens elements, in a matrix, and each lens of the fly eye lens 3 on the lamp 1 side is combined.
- the corresponding lens elements of the fly's-eye lens 4 uniformly illuminate the inside of the effective area of the liquid crystal panels 10, 13 and 19 by the illumination light of the lamp 1 output from the lens element.
- the fly's eye lenses 3 and 4 have one main surface being a flat surface and the other main surface being a convex surface of the lens element, and for example, the flat surface is disposed to face each other. ing.
- the PS converter 5 is configured to align the polarization components of the illumination light in order to effectively utilize the illumination light emitted from the lamp 1.
- PS converter 5 is a ⁇ 2 board or
- the polarization beam splitter is configured by, for example, to convert P-polarized light into S-polarized light, and among incident illumination light, it transmits S-polarized light and also P-polarized light. Since the light is converted into S-polarized light and output, it is possible to convert all the illumination light into S-polarized light.
- the PS converter 5 is an optical element arranged to improve the brightness by aligning the polarization components of the light for illuminating the liquid crystal panel in an illumination device using polarized light such as a liquid crystal panel.
- the wavelength selective optical stop filter 22 is formed of a spectral filter such as a dichroic filter designed so that regions having different transmittances form an optical stop according to the wavelength of the illumination light.
- the wavelength selective optical diaphragm filter 2 2 changes the F-number, which is an indicator of the brightness of the illumination light, by changing the diameter of the diaphragm of the optical diaphragm according to the wavelength of the illumination light. Adjustment of the wavelength of Such a wavelength selective light stop filter 22 is provided on the plane side of the fly's eye lens 4 corresponding to the position of the pupil of the illumination optical system.
- a region of different transmittance is formed according to the wavelength of the illumination light along the outer shape of the lens element.
- the F value is a value that is inversely proportional to the aperture diameter, that is, a value that is inversely proportional to the brightness of the illumination light.
- the main condenser lens 6 is a convex lens that condenses the illumination light transmitted through the PS converter 5.
- the main condenser lens 6 and the channel condenser lenses 9, 12 and 18 collect the respective primary color lights in the liquid crystal panels 10, 13 and 19 respectively. It is made to shine.
- the dichroic mirror 7 is a blue light corresponding to the blue wavelength component of the illumination light incident through the fly eye lens 3, the wavelength selective optical aperture filter 22, the fly eye lens 4, the PS converter 5 and the main condenser 6. It has a function of separating blue light flux 23 which is a light flux of light and light flux of primary color light corresponding to wavelength components of other colors.
- the projection type image display apparatus further comprises a mirror 11, a channel condenser lens 12 and a liquid crystal panel 13 in order along the optical path of the blue light beam 23 separated by the dichroic mirror 7. ing.
- the mirror 11 is adapted to reflect the blue light flux 23 separated by the dichroic mirror 7 toward the liquid crystal panel 13.
- the channel condenser lens 12 is adapted to condense the blue light flux 23 reflected by the mirror 11 onto the liquid crystal panel 13.
- the liquid crystal panel 3 has a function of spatially modulating the blue light flux 23 incident through the mirror 11 and the channel condenser lens 12 in accordance with the video signal corresponding to blue.
- the projection type image display apparatus further includes a dichroic mirror 8 along the optical path of the light flux corresponding to the wavelength component of the other color separated by the dichroic mirror 7.
- the dichroic mirror 8 is a red light corresponding to the green light beam 24 which is a light beam of green light corresponding to the wavelength component of the other color and a red light component corresponding to the wavelength component of the other color which has entered. It has a function of separating into red luminous flux 2 5 which is luminous flux of.
- the projection type image display apparatus further comprises a channel condenser lens 9 and a liquid crystal panel 10 in order along the optical path of the green luminous flux 24 separated by the dichroic aperture mirror 8.
- the channel condenser lens 9 focuses the green luminous flux 24 separated by the dichroic mirror 8 on the liquid crystal panel 10.
- the liquid crystal panel 10 has a function of spatially modulating and transmitting the green luminous flux 24 incident through the channel condenser lens 9 in accordance with the video signal corresponding to green.
- the projection type image display apparatus further comprises a relay lens 14, a mirror 15, a relay lens 16, and a mirror 1 along the optical path of the red light flux 25 separated by the dichroic mirror 8. 7 and channel condenser lens 1 8 and liquid crystal panel 1 9 are provided in order.
- the mirror 15 is separated by the dichroic mirror 8, and reflects the red light flux 25 incident through the relay lens 1-4 toward the mirror 1 7 through the relay lens 16.
- the mirror 17 reflects the red light flux 25 incident through the relay lens 16 toward the liquid crystal panel 19.
- the liquid crystal panel 1 9 is reflected by the mirror 1 1 7 and enters through the channel condenser lens 1 8 a red light flux 2 5 And has a function of spatially modulating according to the video signal corresponding to red.
- the relay lenses 14 and 16 disposed along the optical path of the red luminous flux 25 have the optical path length of the red luminous flux 25 longer than the optical path lengths of the blue luminous flux 23 and the green luminous flux 24, The optical path lengths of these luminous fluxes from the lamp 1 are corrected so as to be apparently identical.
- this projection type image display apparatus combines the blue light beam 23, the green light beam 24 and the red light beam 25 at a position where the light paths of the color light beam 23, the green light beam 24 and the red light beam 25 intersect. It has a cross prism 20 having a function, and a projection lens 21 for projecting the combined light emitted from the cross prism 20 toward a screen not shown.
- the cross prism 20 has an incident surface 20 a on which the blue luminous flux 23 is incident through the liquid crystal panel 13 and an incident surface 20 b on which the green luminous flux 24 is incident through the liquid crystal panel 10.
- the liquid crystal panel 19 has an incident surface 20 c on which the red luminous flux 25 is incident, and an exit surface 20 d opposed to the projection lens 21.
- the cross prism 20 combines the luminous fluxes of the three colors incident on the entrance faces 20a, 20b and 20c and emits the combined light from the exit face 20d.
- wavelength selective optical diaphragm filter 22 will be described in more detail below.
- a plan view of the wavelength selective optical stop filter 22 as viewed from the lamp 1 side, that is, a plan view as viewed from the optical axis direction is shown in FIG.
- the wavelength selective optical diaphragm filter 22 is set such that the wavelength selectivity of the dichroic filter is different between the region A located at the center in FIG. 3 and the region B located at the periphery of the region A. .
- the entire band transmission as shown in FIG. 1 The case where the characteristic to transmit the green luminous flux 24 and the red luminous flux 25 is given and the characteristic to transmit only the red luminous flux as shown in FIG. 5 is given to the region B will be described.
- the amount of light of the green wavelength component and the blue wavelength component is large relative to the light amount of the red wavelength component, and the green and blue light is irradiated as a whole.
- the red light flux 25 passes through the entire area shown in FIG. 3, that is, the area A and the area B.
- the blue light flux 23 and The green luminous flux 24 can transmit only a part of the area A shown in FIG. Therefore, as shown in FIG. 6, among the illumination light emitted from the lamp, the blue light and the green light are limited by the wavelength selective optical diaphragm filter 22 to a region which can substantially pass only to the region A, ie, Because the diameter of the light stop is limited, the F value as illumination light is larger than that of red light. As a result, the spread angles of the blue and green light beams decrease, and as a result, the blue light and the green light are reduced. Next, as shown in FIG. 7, since the red light is not limited in the area that can be transmitted, it has the same brightness as when the wavelength selective optical stop filter 22 is not included.
- the wavelength selective optical diaphragm filter 22 can adjust the white balance to reduce the blue light and the green light.
- the wavelength selective optical iris filter 2 2 the illumination optical system pupil position!
- a light beam L even if the boundary 2 2 a of the region of the wavelength selective optical aperture filter 2 2 is deviated from the outline of the lens element.
- the region 22 b approximately the same amount of luminous flux is reduced.
- the wavelength selective optical stop filter 22 is disposed close to the fly's eye lens 4 which is the position of the pupil of the illumination optical system, the liquid crystal panels 10 0 1 13 9 The luminous flux toward the light can be kept uniform.
- a wavelength selective optical diaphragm filter having different transmittance depending on the wavelength so as to include the light flux between the corresponding lens elements of the fly eye lenses 3 and 4. If the area forming the 2nd aperture is provided, the uniformity of the illumination light can be maintained, and the space can be used effectively.
- the projection type image display apparatus configured as described above was emitted from the lamp 1 The operation of each part will be described along the optical path of the illumination light.
- the illumination light emitted from the lamp 1 includes red light, green light, and blue light components that are the three primary colors of light, includes red light, green light, and amber light, and is led to the fly eye lens 3.
- the light is condensed by the lens element of the above and enters the wavelength selective optical aperture filter 22.
- red light is transmitted as it is to the wavelength selective optical diaphragm filter 22, and green light and blue light can not be transmitted through the region B, and are narrowed by the wavelength selective optical diaphragm filter 22.
- the light enters the fly's eye lens 4, is condensed by the respective lens elements of the fly's eye lens 4, makes the illuminance distribution uniform and transmits, and enters the PS converter 5.
- the illumination light incident on the PS converter 5 is P-polarized light as it is transmitted, and the S-polarized light is converted to P-polarized light, and is incident on the main capacitor 6 as all 1 ] polarized light.
- the light is condensed by the main condenser 6 and is incident on the dichroic mirror 7.
- the illumination light incident on the dichroic mirror 7 is reflected by the blue light and guided to the mirror 11, and the other primary light, that is, the red light and the green light are transmitted and guided to the dichroic mirror 8. It is eaten.
- the blue light incident on the mirror 1 1 is reflected by the mirror 1 1, enters the channel condenser lens 1. 2, and is condensed on the liquid crystal panel 1 3 by the channel condenser lens 1 2 to produce a liquid crystal panel.
- the light is spatially modulated according to the video signal corresponding to blue by 13 and transmitted, and the light is incident from the incident surface 20 a of the cross prism 20.
- the green light and the red light incident on the dichroic mirror 8 are reflected and guided to the channel condenser 9, and the remaining primary light, that is, the red light is transmitted and guided to the relay lens 14.
- the green light incident on the channel capacitor 9 is collected on the liquid crystal panel 10, spatially modulated by the liquid crystal panel 10 according to the video signal corresponding to green, and transmitted, and the incident surface of the cross prism 20 Incident from 2 0 b.
- the red light incident on relay lens 14 passes through relay lens 14, is reflected by mirror 15, is incident on relay lens 16, and passes through relay lens 16. It is reflected by the mirror 17 and enters the channel capacitor 18.
- the red light 25 incident on the channel condenser 18 is condensed on the liquid crystal panel 19, spatially modulated according to the video signal corresponding to red by the liquid crystal panel 19, and transmitted, and the cross prism 2 It enters from 0 entrance plane 2 0 c.
- the blue light, green light and red light incident on the cross prism 20 are synthesized by the cross prism 20 and emitted from the exit surface 20 d as a synthesized light, and the screen is projected by the projection lens 21. Projected
- the projection type image display apparatus reduces the light of this wavelength component by narrowing the light of the specific wavelength component by the wavelength selective optical diaphragm filter 22 and separates the light into three light paths.
- the light of each wavelength component is modulated by the liquid crystal panel corresponding to each wavelength component, and the projection lens 21 can display an image according to the image signal on the screen.
- the projection type image display apparatus When adjusting the white balance of the projection light projected onto the screen, it is necessary for the projection type image display apparatus to adjust the ratio of the illuminance value of each primary color light.
- a wavelength is used to reduce light by narrowing the luminous flux into regions having different transmittances according to the wavelength components.
- the selective optical diaphragm filter 2 2 is used as a means for reducing primary color light with a large illuminance value.
- the selective optical diaphragm filter 2 2 is used as a means for reducing primary color light with a large illuminance value.
- the selective optical diaphragm filter 2 2 is used as a means for reducing primary color light with a large illuminance value.
- the selective optical diaphragm filter 2 2 is used. That is, in the projection type image display apparatus, the wavelength selective optical diaphragm filter 22 changes the aperture diameter of the wavelength components of the three primary colors, that is, between channels, and adjusts the extinction ratio of each primary color.
- liquid crystal devices such as liquid crystal panels 10, 13 and 19 have so-called pretilts in which liquid crystal molecules have a slight angle with respect to the panel surface, and thus the angle of incident light is on the panel surface.
- the desired spatial modulation characteristics can not be obtained.
- the wavelength selective optical diaphragm filter 22 since the channel reduced by the wavelength selective optical diaphragm filter 22 is narrowed by the wavelength selective optical diaphragm filter 22, the F value can be increased, and the spread angle of the light flux can be increased.
- the inclination of the incident light with respect to the direction perpendicular to the panel surface of the liquid crystal panels Contrast can be improved.
- the projection type image display apparatus can achieve both the adjustment of the white balance and the improvement of the contrast.
- a wavelength selective optical diaphragm filter comprising a spectral filter such as a dichroic filter designed to change the diaphragm diameter of the optical diaphragm in accordance with the wavelength of the illumination light in the portion of the illumination system 2
- the wavelength selective optical aperture filter 22 can be changed according to the setting, but according to the wavelength component of the illumination light, it selectively transmits only primary color light of a predetermined wavelength component among the three original color lights. The primary color light of the other wavelength components is not transmitted. Therefore, the wavelength selective optical diaphragm filter 22 can narrow down the primary color light of the specific wavelength component, and this makes it possible to freely adjust the illuminance. Then, since the F value of the channel subjected to the light reduction adjustment becomes large, the spread angle of the light flux decreases, and the contrast can be improved when the liquid crystal panel is used for the display device.
- the number of parts does not increase as compared with the conventional method in which the ND filter is inserted for each channel, so that the projection type image display apparatus does not have a complicated configuration, and It can be manufactured inexpensively.
- the area division of the wavelength selective optical diaphragm filter 22 is as shown in FIG. It is preferable to divide and arrange in the small area 3 1 corresponding to each lens element unit of the fly-eye lens 4.
- the small area 31 has a shape that roughly matches the outer shape of the lens element.
- the small regions 31 divided into a grid shape in FIG. 8 correspond to each lens element of the Briey lens 4 and follow the outer shape of each lens element, that is, a wavelength selective optical diaphragm filter in lens element units. Area division is performed.
- the wavelength selective optical stop filter 22 can obtain the above-described effects.
- the uniformity of the wavelength selective optical aperture filter 22 and the fly-eye lens 4 illumination light can be further improved. Is possible.
- by subjecting the wavelength selective optical diaphragm filter 22 to area division in this way when reducing the light of a specific channel, color unevenness of the video screen does not occur.
- the optical aperture is performed for each lens element unit of the fly eye lens 4 to prevent the above-mentioned effects without impairing the uniformity of the projection image. It becomes possible to obtain.
- the above-described projection type image display apparatus has been described by way of an example in which the wavelength selective optical diaphragm filter 22 is divided into two regions of the region A and the region B in FIG.
- the number of divisions of the two areas is not limited to two, and may be divided into three as shown in FIG. This makes it possible to finely adjust the aperture diameter of the optical aperture for each channel.
- the light intensity of the green light and the blue light is stronger than that of the red light. Then green light will be the strongest.
- the wavelength selective optical stop filter 22 is divided into three at about the center, region C, region D outside region C, region E further outside region D, and region E.
- the wavelength selective optical diaphragm filter 2 2 has a characteristic to transmit the entire band, that is, red light, green light and blue light, in the region C located in the approximate center, and is located at the periphery of the region C It is set such that the region D has the characteristic of transmitting only red light and blue light, and the region E located at the outermost periphery has the characteristic of transmitting only red light.
- Such a wavelength selective optical stop filter 22 reduces the stop diameter for the green light to be most reduced by reducing the stop diameter of the optical stop in three steps according to the wavelength components. Next, the aperture diameter for blue light to be reduced can be made larger than the aperture diameter for green light and reduced, and red light that is not desired to be reduced can be transmitted as it is.
- the wavelength selective optical stop filter 22 adjusts the amount of light reduction for each of the three primary color lights, for example, when using a metal halide lamp or an extra-high pressure mercury lamp. It is possible to adjust the white balance more finely.
- the region D may have a characteristic to transmit only the red light and the green light according to the wavelength characteristic of the lamp 1.
- the division number of the region of the wavelength selective optical diaphragm filter 22 is not necessarily rectangular as shown in FIG. 3, FIG. 8 and FIG. As shown in FIG. 10, it is also possible to carry out a division having a mosaic shape.
- the projection type image display apparatus described above is a wavelength selective optical stop filter 22.
- the number of divisions of the region is not divided into regular regions, for example, as shown in FIG. An area may be provided.
- the filter area is provided randomly for each small area 31
- the case where the small areas 31 are provided randomly is different from the function of the optical stop, and such wavelength selectivity
- the optical stop filter 2 2 will be described as the wavelength selective optical filter 4 1.
- the wavelength selective optical filter 41 is randomly provided in the small area 31 corresponding to the lens element unit of the fly's eye lens 4.
- the light transmitted through one lens element of the fly's-eye lens 4 becomes illumination light that illuminates each part of the liquid crystal panel.
- the fly-eye lens 4 is designed to make the illuminance distribution uniform by superimposing the light transmitted through each lens element on the liquid crystal panel. Therefore, by blocking a desired wavelength for each lens element, the whole is realized.
- a wavelength selective optical filter 41 has a light reduction function.
- the wavelength selective optical filter 41 can adjust the transmittance of a desired wavelength by the number of small regions 31 provided with the filter region, and fine adjustment of the transmittance is easy.
- wavelength selective optical filter 41 By providing the wavelength selective optical filter 41 in the above-described projection type image display apparatus, it is possible to easily perform the adjustment of the white balance described above, and it is not necessary to provide the ND filter in each channel. .
- the wavelength selective optical filter 4 1 is formed by a dichroic coating or the like on the flat side of the fly's eye lens 4. It is made or placed around the fly eye lens 4.
- the fly's eye lenses 3 and 4 described above are optical means for obtaining uniform illumination, and the light beam after passing through the fly's eye lens 4 is almost parallel light c.
- an optical system that does not place importance on the uniformity of the lens it is possible to use a lamp that emits substantially parallel light instead of obtaining uniform substantially parallel light from the lamp 1 using the fly eye lenses 3 and 4.
- the presence or absence of the fly eye lenses 3 and 4 does not affect the realization of the present invention.
- the PS converter 5 is an optical element disposed for the purpose of improving the brightness by aligning the polarization direction of the light illuminating the liquid crystal panel in an illumination device using polarized light such as a liquid crystal panel. It is.
- FIG. 12 shows a modification in which the fly's eye lenses 3 and 4 and the PS converter 5 are removed in FIG. 1 and the wavelength selective optical aperture filter 22 is formed on the main lens of the main condenser lens 6. That is, in the modification shown in FIG. 12, the lighting device 2 is configured by the lamp 1 and the main condenser lens 6 having the wavelength selective optical narrowing filter 22 formed on the main surface.
- the illumination light emitted from the lamp 1 includes red light, green light, and blue light which are the three primary colors of light, includes red light, green light, and blue light, is guided to the main condenser lens 6, and is collected by the main condenser 6. The light is emitted and enters a wavelength selective optical stop filter 22 provided on the main surface of the main capacitor 6.
- red light is transmitted as it is to the wavelength selective optical diaphragm filter 22, and green light and blue light can not be transmitted through the region B, and are narrowed by the wavelength selective optical diaphragm filter 22.
- It enters dichroic mirror 1 7.
- the illumination light that has entered the dichroic mirror 7 is reflected by the blue light and guided to the mirror 11, and the other primary colors, that is, red light and green light, are transmitted to the dichroic mirror 8. Led.
- the blue light incident on mirror 1 1 is reflected by mirror 1 1, enters channel capacitor lens 1 2, and is condensed on liquid crystal panel 1: 5 by this channel condenser lens 1 2.
- the liquid crystal panel 13 spatially modulates and transmits the light according to a video signal corresponding to blue, and the light is incident from the incident surface 20 a of the cross prism 20.
- the green light and the red light incident on the dichroic mirror 18 are reflected and guided to the channel condenser 9, and the remaining primary light, that is, the red light is transmitted and guided to the relay lens 14 .
- the green light incident on the channel capacitor 9 is collected on the liquid crystal panel 10, spatially modulated by the liquid crystal panel 10 according to the video signal corresponding to green, and transmitted, and the incident surface of the cross prism 20 Incident from 2 0 b.
- the red light incident on relay lens 14 passes through relay lens 14, is reflected by mirror 15, is incident on relay lens 16, and passes through relay lens 16. It is reflected by the mirror 17 and enters the channel capacitor 18.
- the red light 25 incident on the channel condenser 18 is condensed on the liquid crystal panel 19, spatially modulated according to the video signal corresponding to red by the liquid crystal panel 19, and transmitted, and the cross prism 2 It enters from 0 entrance plane 2 0 c.
- the blue light, green light and red light incident on the cross prism 20 are combined by the cross prism 20 and emitted from the exit surface 20 d as a synthesized light, and the light is projected by the projection lens 21. Projected lean.
- the projection type image display apparatus shown in FIG. 12 reduces the light of this wavelength component by narrowing the light of the specific wavelength component by the wavelength selective optical aperture filter 22. The same effect as described above can be obtained.
- FIG. 1 shows an example in which the optical path lengths are aligned using relay lenses 1 4 and 16
- FIG. 13 which uses a mirror instead of a relay lens to make the optical path lengths uniform.
- light using Mira One In the case of equalizing the path length, the size of the device is increased as compared to the case where the relay lens is used. Therefore, it is preferable to use the relay lens when downsizing of the device is required.
- the projection type image display apparatus shown in FIG. 13 is changed to dichroic mirrors 7 and 8 provided in the projection type image display apparatus shown in FIG. 1, and further, dichroic mirror 51, mirror 52, dichroic mirror 53 , Mirror 54 will be equipped with.
- the dichroic mirror 51 corresponds to the red wavelength component of the illumination light incident through the fly's eye lens 3, the wavelength selective optical aperture filter 2 2, the fly's eye lens 4, the PS converter 5 and the main capacitor 6. It has a function of separating it into red light flux 25 which is a light source of red light and light flux of primary color light corresponding to wavelength components of other colors.
- the mirror 52 is configured to reflect light fluxes of primary colors corresponding to wavelength components of other colors separated by the dichroic mirror 51 to the dichroic mirror 5 3.
- the dichroic mirror 53 is a light flux of the primary color light corresponding to the wavelength components of the other colors reflected by the mirror 52, and is a light flux of the blue light corresponding to the blue wavelength component. That is, it has a function of separating into green light 24 of green light corresponding to the green wavelength component.
- the mirror 54 reflects the blue light flux 23 separated by the dichroic mirror 53 toward the channel condenser lens 9 and reflects the red light flux 25 separated by the dichroic mirror 51. It is designed to reflect towards 11.5.
- the illumination light emitted from the lamp 1 includes red light, green light, and blue light which are the three primary colors of light, includes red light, green light, and blue light, is guided to the main condenser lens 6, and is collected by the main condenser 6. The light is emitted and enters a wavelength selective optical stop filter 22 provided on the main surface of the main capacitor 6.
- red light is transmitted as it is.
- the green light and the blue light are not transmitted through the region B, are narrowed by the wavelength selective optical stop filter 22, and are incident on the dichroic mirror 51.
- the illumination light incident on the dichroic mirror 51 is reflected by the red light and guided to the mirror 54, and the other primary light, that is, blue light and green light are transmitted, and the mirror 1 5 It is led to 2.
- the blue light and green light incident on the mirror 52 are reflected by the mirror 52 and guided to the dichroic mirror 53, and the blue light and green light incident on the dichroic mirror 53 are reflected by the green light.
- the light is guided to the mirror 54, and the remaining primary light, that is, the blue light is transmitted and guided to the mirror 11.
- the blue light incident on the mirror 1 1 is reflected by the mirror 1 1, enters the channel condenser lens] 2, is condensed on the liquid crystal panel 13 by the channel condenser lens 2 2, and the liquid crystal panel
- the light is spatially modulated and transmitted according to the video signal corresponding to blue according to 1.3, and is incident from the entrance surface 20 a of the cross prism 20.
- the green light incident on the mirror 1 54 is reflected by the mirror 5 4 and guided to the channel capacitor 9 and collected on the liquid crystal panel 10 to be an image signal corresponding to green by the liquid crystal panel 10 Accordingly, the light is spatially modulated and transmitted, and is incident from the incident surface 20b of the cross prism 20.
- the red light incident on the mirror 54 is reflected in the order of the mirror 54, the mirror 15 and the mirror 17 and enters the channel capacitor 18.
- the red light 25 incident on the channel condenser 18 is condensed on the liquid crystal panel 19, spatially modulated according to the video signal corresponding to red by the liquid crystal panel 19, and transmitted, and the cross prism 2 It enters from 0 entrance plane 2 0 c.
- the blue light, the green light and the red light incident on the cross prism 20 are synthesized by the cross prism 20 and emitted as a synthesized light from the exit surface 20 d, and the screen is projected by the projection lens 21. Projected
- the projection type image display apparatus shown in FIG. 13 reduces the light of this wavelength component by narrowing the light of the specific wavelength component by the wavelength selective optical diaphragm filter 22. The same effect as described above can be obtained.
- FIG. 1 shows a configuration example for combining primary color light using the cross prism 20.
- primary color light is combined using mirror instead of cross prism.
- An example of the configuration is shown in Figure 14.
- FIG. 4 The projection type image display device shown in 4 is replaced with the mirror 15 provided in the projection type image display device shown in FIG. 1, the mirror 17 and the cross prism 20, and the mirror 61 and the dichroic mirror 6 2 , Dichroic mirror 63 is configured.
- the mirror 61 is configured to reflect the red light flux 25 spatially modulated by the liquid crystal panel 19 toward the dichroic aperture Iquic mirror 1 6 3.
- the dichroic mirror 62 reflects the green light beam 24 spatially modulated by the liquid crystal panel 10 toward the dichroic mirror 6 3 and reflects blue light flux 2 3 spatially modulated by the liquid crystal panel 13. Is transmitted to the dichroic mirror 1 6 3.
- the dichroic mirror 63 transmits the red light 25 reflected by the mirror 61 and guides the red light 25 to the projection lens 21, and the green light 24 reflected by the dichroic mirror 62 and the dichroic light.
- the blue light flux 2 3 transmitted through the mirror 6 2 is reflected to guide the projection lens 2 1.
- the illumination light emitted from the lamp 1 includes red light, green light, and blue light components that are the three primary colors of light, includes red light, green light, and blue light, and is guided to the fly eye lens 3.
- the light is condensed by the lens element of the above and enters the wavelength selective optical stop filter 22.
- red light is transmitted as it is to the wavelength selective optical diaphragm filter 22, and green light and blue light can not be transmitted through the region B, and are narrowed by the wavelength selective optical diaphragm filter 22.
- the light enters the fly's eye lens 4, is condensed by the respective lens elements of the fly's eye lens 4, makes the illuminance distribution uniform and transmits, and enters the PS converter 5.
- the illumination light incident on the dichroic mirror 7 is reflected by the blue light and guided to the mirror 11, and the other primary light, that is, the red light and the green light are transmitted to be guided to the dichroic mirror 8. It is eaten.
- the blue light incident on the mirror 1 1 is emitted by the mirror 1 1, enters the channel condenser lens 12, is condensed on the liquid crystal panel 13 by the channel condenser lens 2 2, and the liquid crystal panel
- the light is spatially modulated according to the video signal corresponding to blue by 13 and transmitted, and is incident on the dichroic mirror 62, transmitted through the dichroic mirror 62, and guided to the dichroic mirror 62.
- the green light and the red light incident on the dichroic mirror 8 are reflected and guided to the channel capacitor 9, and the remaining primary light, that is, the red light is transmitted and guided to the channel capacitor 8.
- the green light incident on the channel condenser 9 is condensed on the liquid crystal panel 10, is space-modulated according to the video signal corresponding to green by the liquid crystal panel 10, and is transmitted to the dichroic mirror 62.
- the light is incident, reflected by the dichroic mirror 62, and guided to the dichroic mirror 63.
- the red light incident on the channel capacitor 18 is illuminated by the liquid crystal panel 19, spatially modulated according to the video signal corresponding to red by the liquid crystal panel 19, and transmitted. It is incident on the mirror 6 and reflected by the mirror 6 1. It is guided to the dichroic mirror 1 6 3.
- Blue light and green light incident on dichroic mirror 63 are reflected by dichroic mirror 63 and incident on projection lens 21. Red light is transmitted through dichroic mirror 63 and projected on projection lens 21 It will be incident. Thus, the blue light, the green light and the red light are synthesized by the dichroic mirror 16 3 and projected on the screen by the projection lens 21.
- the projection type image display apparatus shown in FIG. 14 reduces the light of this wavelength component by narrowing the light of the specific wavelength component by the wavelength selective optical aperture filter 22.
- the same effect as described above can be obtained.
- an optical system using a transmissive liquid crystal panel has been described as an example, but the present invention is not limited to this, and can be applied to an optical system using a reflective liquid crystal panel.
- the projection image shown in c Figure 1 5 which can be in the case of the configuration using the reflection type liquid crystal panel 7 5, 7 6, 7 7, as shown in FIG.
- the display includes illumination device 2, dichroic mirror 7 1, dichroic mirror 7 2, mirror 7: 3, mirror 7 4, dichroic mirror 90, channel condenser 9, 1 2, 18, reflection type Liquid crystal panels 7 5, 7 6, 7 7, polarization beam splitter 7 8, 7 9, 80, cross prism 20, projection lens 21 are provided. Note that, in the following, the same reference numerals are given to the configuration substantially equivalent to the projection type video and the like display device described in FIG. 1, and the description will be omitted.
- the dichroic mirror 7 1 corresponds to the blue wavelength component of the illumination light incident through the fly's eye lens 3, wavelength selective optical aperture filter 2 2, fly's eye lens 4, PS converter 5 and main condenser 6. It has a function of separating into blue luminous flux 23 which is luminous flux of blue light and luminous flux of primary color light corresponding to wavelength components of other colors.
- the dichroic mirror 1 72 has illumination light incident through the fly's eye lens 3, wavelength selective optical aperture filter 2 2, fly's eye lens 4, PS converter 5 and main condenser 6 at green and red wavelengths. It has a function of separating into green light flux 24 and red light flux 25 which are light fluxes of green light and red light corresponding to the components and light flux of original color light corresponding to wavelength components of other colors.
- the dichroic mirror 71 and the dichroic mirror 72 are arranged to be orthogonal to the cross. That is, the dichroic mirror 7 1 and the dichroic mirror 72 reflect the blue light of the incident illumination light and guides it to the mirror 74, reflects the green light and the red light to guide it to the mirror 73. It is getting worse.
- the mirror 73 is adapted to reflect the green light and the red light reflected by the dichroic mirror 72 to the dichroic mirror 90. Also, the mirror 1 74 is designed to reflect the blue light reflected by the dichroic mirror 8 to the channel condenser 1 2.
- the dichroic mirror 90 receives the green and red light reflected by the mirror 7 3 C Reflective type having a function of separating into a green luminous flux 24 which is a luminous flux of green light corresponding to a green wavelength component and a red luminous flux 25 which is a red luminous flux corresponding to its red wavelength component
- the liquid crystal panel 75 has a function of randomly modulating and reflecting the green luminous flux 24 incident through the channel condenser lens 9 and the polarization beam splitter 7 8 in accordance with the video signal corresponding to green. doing.
- the reflective liquid crystal panel 76 has a function of spatially modulating and reflecting the color light flux 23 incident through the channel condenser lens 1.2 and the polarization beam splitter 7 9 according to the video signal corresponding to blue. have.
- the reflection type liquid crystal panel 7 has a function of spatially modulating and reflecting the red light flux 25 incident through the channel condenser lens 1 8 and the polarization beam splitter 80 according to the video signal corresponding to red. have.
- the polarized beam splitter 78 is designed to transmit or reflect the green light according to the polarization component of the green light.
- the polarized beam splitter 78 transmits, for example, P-polarized light, reflects S-polarized light by a reflecting surface inclined 45 ° with respect to the light path, and changes the traveling direction by 90 °.
- the polarization beam splitter 7 9 is adapted to transmit or reflect and separate this blue light depending on the polarization component of the blue light.
- the polarized beam splitter 79 transmits, for example, P-polarized light, reflects S-polarized light by a reflecting surface inclined 45 ° with respect to the light path, and changes the traveling direction by 90 °.
- the polarized beam splitter 80 is designed to transmit or reflect the red light according to the polarization component of the red light.
- the polarized beam splitter 80 transmits, for example, P-polarized light, reflects S-polarized light on a reflecting surface inclined 45 ° with respect to the light path, and changes the traveling direction by 90 °.
- the illumination light emitted from the lamp 1 includes red light, green light, and blue light components that are the three primary colors of light, includes red light, green light, and blue light, and is guided to the fly eye lens 3.
- the light is condensed by the lens element of the above and enters the wavelength selective optical stop filter 22.
- red light is transmitted as it is to the wavelength selective optical diaphragm filter 22, and green light and blue light can not be transmitted through the region B, and are narrowed by the wavelength selective optical diaphragm filter 22.
- the light enters the fly's eye lens 4 and is collected by the respective lens elements of the fly's eye lens 4 to make the illuminance distribution uniform and transmit, and the light enters the PS converter 5.
- the blue light is reflected by the dichroic mirror 73 and guided to the mirror 74, and the green light and the red light are reflected. It is led to mirror 7 3.
- the blue light incident on the mirror 74 is reflected by the mirror 74, is incident on the channel condenser lens 12, is collected by the channel condenser lens 12, and is incident on the polarization beam splitter 7 9,
- the light is reflected by the polarization beam splitter 7 9 and is incident on the reflection type liquid crystal panel 76, and is spatially modulated and reflected according to the video signal corresponding to blue by the reflection type liquid crystal panel 7 6.
- the light passes through the beam splitter 7 9 and is incident on the incident surface 2 0 a of the cross prism 20.
- the green light and the red light incident on the mirror 73 are reflected by the mirror 13 and incident on the beam splitter 90, and the red light is reflected and led to the channel capacitor 18 and the green light Are transmitted to the channel capacitor 9.
- the green light incident on the channel condenser lens 9 is collected by the channel condenser lens 9 and enters the polarized beam splitter 7 8, and is reflected by the polarized beam splitter 7 8 to the reflective liquid crystal panel 7 5.
- Incident light is spatially modulated and reflected according to the image signal corresponding to green by the reflective liquid crystal panel 75, and is transmitted through the polarized beam splitter 78, and the incident surface of the cross prism 20 Enter b.
- the red light incident on the channel condenser 18 is condensed by the channel condenser lens 18 and incident on the polarization beam splitter 80, and the polarization beam
- the light is reflected by the msplitter 80 and incident on the reflective liquid crystal panel 7.
- the light is spatially modulated according to the image signal corresponding to red by the reflective liquid crystal panel 7 7 and reflected, and a polarized beam splitter is produced.
- the light passes through 80 and is incident on the incident surface 20 c of the cross prism 20.
- the blue light, the green light, and the red light incident on the cross prism 20 are combined by the cross prism 20 and emitted from the exit surface 20 d as a combined light, and the projection lens 2 1 Project on the screen.
- the projection type image display apparatus shown in FIG. 15 reduces the light of this wavelength component by narrowing the light of the specific wavelength component by the wavelength selective optical aperture filter 22. The same effect as described above can be obtained.
- a light source such as a spatial light modulation device using a matrix-like micro mirror such as a digital 'micro mirror device (DMD) instead of the above-mentioned reflective liquid crystal panel
- DMD digital 'micro mirror device
- the position where the wavelength selective optical diaphragm filter 22 is disposed is on the optical axis of the illumination light from the lamp 1 and a portion where the optical diaphragm is performed before color separation is performed, that is, fly There is no particular limitation as long as it is in the vicinity of the eye lens 4, and the above-described effect can be obtained by being disposed at such a position.
- FIG. 1 which is a configuration example using a fly's eye lens
- the wavelength selective optical stop filter 22 is on the optical axis of the illumination light and in the vicinity of the fly's eye lens 4 or the PS converter 5
- the above-described effects can be obtained regardless of the position.
- the wavelength selective optical diaphragm filter is dichroic-coated on components such as a fly's eye lens and a main condenser lens
- the number of parts added to obtain the above effect is one point. Since the number of parts does not increase as compared with the conventional method in which the ND filter is inserted for each channel, the projection type image display apparatus does not have a complicated structure and can be manufactured inexpensively. Can.
- the position for coating the wavelength selective optical stop filter is not limited to the surface of the fly's eye lens.
- the present invention is not limited to the above description, and can be appropriately modified without departing from the scope of the present invention.
- the illumination device according to the present invention is an illumination device that emits light with three primary colors, and is provided with a light source that emits the three primary colors, and is disposed on the light primary side of the light source And a wavelength selective optical stop filter for reducing the light intensity of the light.
- the illumination device configured as described above is a wavelength selective optical aperture consisting of a spectral filter such as a dichroic filter, which is designed so that the aperture diameter of the optical aperture changes according to the wavelength component of illumination light.
- a spectral filter such as a dichroic filter
- a projection type image display apparatus includes a light source for emitting three primary colors, and a wavelength selection device disposed on the emission side of the three primary colors in the light source for adjusting the illuminance of the three primary colors.
- Illumination device having an adaptive optical aperture filter, color separation means for selecting the three primary color lights subjected to the light reduction adjustment according to the wavelength range and separating them into three primary colors, and three primary colors separated by the color separation means Three video display panels that modulate the respective emitted lights of the three based on the video signal, color combining means for combining each of the three primary color lights modulated by the respective video display panels into one, And a projection lens for receiving the light emitted from the means and projecting the optical image onto the screen.
- the lighting device is configured to There is provided a wavelength selective optical stop filter comprising a spectral filter such as a dichroic filter designed to change the stop diameter of the optical stop accordingly.
- a wavelength selective optical stop filter comprising a spectral filter such as a dichroic filter designed to change the stop diameter of the optical stop accordingly.
- the projection type image display apparatus does not have a complicated structure and can be manufactured inexpensively.
- an illumination device and a projection device that can adjust the white chromaticity of projection light with a simple configuration and can realize good contrast.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2003504156A JP4055708B2 (ja) | 2001-06-08 | 2002-06-10 | 照明装置及び投射型映像表示装置 |
US10/343,883 US6726334B2 (en) | 2001-06-08 | 2002-06-10 | Lighting device and projection type image display device |
EP02736037A EP1394601B1 (en) | 2001-06-08 | 2002-06-10 | Lighting device and projection type image display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-174719 | 2001-06-08 | ||
JP2001174719 | 2001-06-08 |
Publications (1)
Publication Number | Publication Date |
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WO2002101457A1 true WO2002101457A1 (fr) | 2002-12-19 |
Family
ID=19015963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/005745 WO2002101457A1 (fr) | 2001-06-08 | 2002-06-10 | Dispositif d'eclairage et dispositif d'affichage d'images de type projection |
Country Status (5)
Country | Link |
---|---|
US (1) | US6726334B2 (ja) |
EP (1) | EP1394601B1 (ja) |
JP (1) | JP4055708B2 (ja) |
CN (1) | CN1265242C (ja) |
WO (1) | WO2002101457A1 (ja) |
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JP2005516249A (ja) * | 2002-01-07 | 2005-06-02 | スリーエム イノベイティブ プロパティズ カンパニー | 投影ディスプレイ装置における色成分開口絞り |
JP2005195768A (ja) * | 2004-01-06 | 2005-07-21 | Victor Co Of Japan Ltd | 照明光学系 |
JP2005202366A (ja) * | 2003-12-19 | 2005-07-28 | Victor Co Of Japan Ltd | 画像表示装置 |
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JP2007212773A (ja) * | 2006-02-09 | 2007-08-23 | Canon Inc | 光学フィルタを有する光学系および画像投射装置 |
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US8903451B2 (en) | 2004-07-16 | 2014-12-02 | Virginia Innovation Sciences, Inc. | Methods, systems and apparatus for displaying the multimedia information from wireless communication networks |
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JP2004219983A (ja) * | 2002-12-26 | 2004-08-05 | Victor Co Of Japan Ltd | 画像表示装置 |
US7008065B2 (en) * | 2003-01-07 | 2006-03-07 | 3M Innovative Properties Company | Color component aperture stops in projection display system |
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JP2005266765A (ja) * | 2004-02-20 | 2005-09-29 | Seiko Epson Corp | プロジェクタ |
JP4165479B2 (ja) * | 2004-09-08 | 2008-10-15 | セイコーエプソン株式会社 | プロジェクタ |
US20060209438A1 (en) * | 2005-03-15 | 2006-09-21 | Peter Gerets | Imaging device |
US20070097509A1 (en) * | 2005-10-31 | 2007-05-03 | Nevitt Timothy J | Optical elements for high contrast applications |
US7486854B2 (en) * | 2006-01-24 | 2009-02-03 | Uni-Pixel Displays, Inc. | Optical microstructures for light extraction and control |
CN101473643A (zh) * | 2006-03-26 | 2009-07-01 | 硅索株式会社 | 入射光流的强度分布 |
JP2010152046A (ja) * | 2008-12-25 | 2010-07-08 | Seiko Epson Corp | プロジェクタ |
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US8659709B2 (en) * | 2010-11-30 | 2014-02-25 | Sharp Kabushiki Kaisha | Display device and television receiver |
TWI476447B (zh) * | 2012-06-01 | 2015-03-11 | Nat Univ Chung Hsing | 立體投影顯示裝置 |
DE102012220570B4 (de) * | 2012-11-12 | 2022-07-14 | Osram Gmbh | Projektionsanordnung |
CN104076584A (zh) * | 2013-03-28 | 2014-10-01 | 台达电子工业股份有限公司 | 适用于数字电影投影装置的光源系统及数字电影投影装置 |
TWI456333B (zh) | 2013-03-28 | 2014-10-11 | Delta Electronics Inc | 適用於數位電影投影裝置之光源系統 |
US20160073070A1 (en) * | 2014-09-09 | 2016-03-10 | Robert M. Spearman | Projection system with image blending lenses |
JP2016075778A (ja) * | 2014-10-06 | 2016-05-12 | セイコーエプソン株式会社 | 光源装置及びプロジェクター |
CN108345160B (zh) * | 2017-01-22 | 2020-11-17 | 深圳光峰科技股份有限公司 | 一种投影显示系统 |
CN110262194A (zh) * | 2019-05-31 | 2019-09-20 | 深圳市华星光电技术有限公司 | 曝光设备的光学系统 |
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2002
- 2002-06-10 EP EP02736037A patent/EP1394601B1/en not_active Expired - Fee Related
- 2002-06-10 WO PCT/JP2002/005745 patent/WO2002101457A1/ja active Application Filing
- 2002-06-10 CN CNB028021649A patent/CN1265242C/zh not_active Expired - Fee Related
- 2002-06-10 JP JP2003504156A patent/JP4055708B2/ja not_active Expired - Fee Related
- 2002-06-10 US US10/343,883 patent/US6726334B2/en not_active Expired - Fee Related
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JP2005516249A (ja) * | 2002-01-07 | 2005-06-02 | スリーエム イノベイティブ プロパティズ カンパニー | 投影ディスプレイ装置における色成分開口絞り |
JP2004219990A (ja) * | 2002-12-26 | 2004-08-05 | Victor Co Of Japan Ltd | 画像表示装置 |
JP4581371B2 (ja) * | 2002-12-26 | 2010-11-17 | 日本ビクター株式会社 | 画像表示装置 |
JP2005202366A (ja) * | 2003-12-19 | 2005-07-28 | Victor Co Of Japan Ltd | 画像表示装置 |
JP4591061B2 (ja) * | 2003-12-19 | 2010-12-01 | 日本ビクター株式会社 | 画像表示装置 |
JP4543680B2 (ja) * | 2004-01-06 | 2010-09-15 | 日本ビクター株式会社 | 照明光学系 |
JP2005195768A (ja) * | 2004-01-06 | 2005-07-21 | Victor Co Of Japan Ltd | 照明光学系 |
US9729918B2 (en) | 2004-07-16 | 2017-08-08 | Virginia Innovation Sciences, Inc. | Method and system for efficient communication |
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US10469898B2 (en) | 2004-07-16 | 2019-11-05 | Innovation Sciences, Llc | Method and system for efficient communication |
US8903451B2 (en) | 2004-07-16 | 2014-12-02 | Virginia Innovation Sciences, Inc. | Methods, systems and apparatus for displaying the multimedia information from wireless communication networks |
US8948814B1 (en) | 2004-07-16 | 2015-02-03 | Virginia Innovation Sciences Inc. | Methods, systems and apparatus for displaying the multimedia information from wireless communication networks |
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US9286853B2 (en) | 2004-07-16 | 2016-03-15 | Virginia Innovation Sciences, Inc. | Methods, systems and apparatus for displaying the multimedia information from wireless communication networks |
US9355611B1 (en) | 2004-07-16 | 2016-05-31 | Virginia Innovation Sciences, Inc | Methods, systems and apparatus for displaying the multimedia information from wireless communication networks |
US10368125B2 (en) | 2004-07-16 | 2019-07-30 | Innovation Science LLC | Method and system for efficient communication |
US9589531B2 (en) | 2004-07-16 | 2017-03-07 | Virginia Innovation Sciences, Inc. | Methods, systems and apparatus for displaying the multimedia information from wireless communication networks |
US10136179B2 (en) | 2004-07-16 | 2018-11-20 | Virginia Innovation Sciences, Inc | Method and system for efficient communication |
US9912983B2 (en) | 2004-07-16 | 2018-03-06 | Virginia Innovation Sciences, Inc | Method and system for efficient communication |
US10104425B2 (en) | 2004-07-16 | 2018-10-16 | Virginia Innovation Sciences, Inc | Method and system for efficient communication |
JP2006220755A (ja) * | 2005-02-08 | 2006-08-24 | Victor Co Of Japan Ltd | 画像表示装置 |
JP4655658B2 (ja) * | 2005-02-08 | 2011-03-23 | 日本ビクター株式会社 | 画像表示装置 |
JP2007212773A (ja) * | 2006-02-09 | 2007-08-23 | Canon Inc | 光学フィルタを有する光学系および画像投射装置 |
US9456346B2 (en) | 2006-07-25 | 2016-09-27 | Virginia Innovation Science, Inc | Method and system for improving client server transmission over fading channel with wireless location and authentication technology via electromagnetic radiation |
JP2008209888A (ja) * | 2007-01-31 | 2008-09-11 | Sony Corp | 光学装置および投射型表示装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1463385A (zh) | 2003-12-24 |
CN1265242C (zh) | 2006-07-19 |
US6726334B2 (en) | 2004-04-27 |
US20030189693A1 (en) | 2003-10-09 |
EP1394601B1 (en) | 2011-10-19 |
JP4055708B2 (ja) | 2008-03-05 |
JPWO2002101457A1 (ja) | 2004-09-30 |
EP1394601A1 (en) | 2004-03-03 |
EP1394601A4 (en) | 2007-05-02 |
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