CN103995351A - Optical scanning display and interaction device - Google Patents
Optical scanning display and interaction device Download PDFInfo
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- CN103995351A CN103995351A CN201410098140.7A CN201410098140A CN103995351A CN 103995351 A CN103995351 A CN 103995351A CN 201410098140 A CN201410098140 A CN 201410098140A CN 103995351 A CN103995351 A CN 103995351A
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Abstract
The invention provides an optical scanning display and interaction device, which belongs to the technical field of optical information display and interaction. The optical scanning display and interaction device structurally comprises a light source (1), a Wollaston light splitting module, a light ray micro translation generation module, a short focal length lens (4) and a receiving screen (5), wherein the Wollaston light splitting module consists of a Wollaston prism (21), a quarter wavelength plate (22) and a light sensor (23) and is used for separating a light path of emergent light from a light path of reflected light and reading reflecting light information; the light ray micro translation generation module can enable light rays to generate micro translation; the short focal length lens (4) is used for enabling the light rays to generate a deflection angle; finally, light spots scanning along with control signals are formed on the receiving screen (5); and the image display is realized. The optical scanning display and interaction device has the advantages that the problems of poor precision, stability control difficulty and the like of optical mechanical scanning are solved; hardware basics for realizing an interaction function are also provided; and when the optical scanning display and interaction device is used for display manufacturing, a touch screen interaction or pointer pen interaction function and a paper document scanning function can be achieved.
Description
Technical field
The invention belongs to optical information and show and mutual technical field, especially relate to a kind of for scan demonstrations, also can be mutual device.
Background technology
Laser television is to utilize All-Solid working-laser material, produces the continuous laser of three kinds of wavelength of red, green, blue as the light source of color laser TV, by TV signal, controls tricolor laser scan image.Its color domain coverage ratio in theory can be up to the more than 90% of human eye gamut range.This has improved again a class than 62% the highest color domain coverage ratio of current LED TV.Moreover, laser television also has plurality of advantages as realized rotary screen, 3D effect, but its gordian technique plane scan deflection is still difficult problem, so slowly fail commercialization.Beam deflection scanning technique mainly contains mechanical scanning mode, electropical scanning mode and acousto-optic scanning mode at present.Electropical scanning is that electrooptical effect changes light beam in the direction of propagation in space; Acousto-optic scanning is exactly made acousto-optic crsytal change the diffraction direction of laser and then reached the object that laser deflection scans by change sound wave frequency.They can obtain very high frequency of operation, but scan deflection angle is less, and light loss is larger, and work efficiency is very low, are difficult to meet the needs of giant-screen.In three kinds of scan modes, mechanical scanning technology is the most ripe, and common mechanical scanning system is comprised of tilting mirror and galvanometer, and scanning angle is large, the light wave that temperature influence is little, be applicable to all kinds of wavelength.Two-dimensional laser scanning system mainly adopts mechanical scanning form at present, with polygonal-mirror, realizes beam level scanning, with plane galvanometer, realizes light beam vertical scanning.Mechanical scanning system is because row, field scan are all by driven by motor, in order to guarantee the positional precision of scanning, high to the synchronous and stability requirement of motor scanning.But, mechanical scanning speed is low, be difficult to meet the scanning requirement of high-definition television in the future, complex structure, when frequency of operation is very high, drive the High-speed Electric chance of tilting mirror and galvanometer to drive surrounding air rotation and produce noise, and the price of high-speed electric expreess locomotive is also more expensive, moreover, life problems etc. is to be all difficult at present put on market practical reason.
In addition, traditional mentality of designing only, just in order to show, is not considered the demand of following user to mutual other functions such as grade.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of and can show and have for photoscanning the optical devices of interaction capabilities.
Above-mentioned technical matters realizes by following technical scheme:
Photoscanning demonstration and an interactive device, its structure has: light source 1 and receiving screen 5 that the thin parallel beam of linear polarization is provided; It is characterized in that: the micro-translation module of Wollaston spectral module, light and the short focal length lens 4 between light source 1 and receiving screen 5, along light path, placed successively in addition; Described Wollaston spectral module, consists of Wollaston prism 21, quarter wave plate 22 and photoreceptor 23; The micro-translation module of described light, that two mirror units 32 that driven respectively by two control device 31 form, two planes that the normal of two mirror units 32 and light path are determined are orthogonal, and mirror unit 32 carries out motion in one dimension along light place straight line under the acting force of control device 31; Described short focal length lens 4 is that a focal length is at the convex lens of millimeter magnitude.
Control device 31 described in the micro-translation module of light, is one and is with index glass unit 32 according to added control signal, thereby changes the device of mirror unit 32 positions.Can be following two kinds of concrete structures.
1. control device 31 consists of collapsible base, and collapsible base can be electrostriction material, and the electric signal of variation is added on electrostriction material, and mirror unit 32 is fixed in collapsible base.The electric signal being applied in collapsible base by change changes the length of substrate, thereby changes the position (making 32 translations of mirror unit) of mirror unit 32.
2. control device 31 can be between an electromagnet and armature plate, to clip the structure of one deck resilient material, and the electric signal of variation is added on magnet coil, and mirror unit 32 is fixed on armature plate.The electric current that changes electromagnet by electric signal just can change the gravitation of electromagnet to armature plate, thereby realizes the control of mirror unit 32 positions (making 32 translations of mirror unit).
Described mirror unit 32 is that the length of side is the square-shaped planar catoptron of 1um～1dm.Preferred 1mm～1cm.
Described photoreceptor 23, can be photodiode, CCD photosensitive unit, photoelectric tube.
An application for photoscanning demonstration and interactive device, shows for color laser TV; Described light source 1 need to, with three light sources, provide respectively three primary colours thin parallel beam; On described control device 31, added electric signal is TV signal.
" a kind of photoscanning demonstration and interactive device " of the present invention has following beneficial effect:
Clear superiority with traditional approach contrast:
1, cost is low, and the element that the present invention adopts is all the element that is easy to obtain, so cost can be lower, be conducive to large-scale commercial applications and produce.
2, energy consumption is low, and the present invention does not need direct current generator to carry out driven sweep device, but adopts the modes such as electromagnetic force, electrostatic force to drive by a small margin, so energy consumption is relatively much lower.
3, high, the good stability of precision, the present invention can make light and electric signal set up one-to-one relationship, so the positioning precision of light is very high.
4, conveniently realize man-machine interaction, and can make display screen there is scan function.
5, compare to relevant application for a patent for invention, the present invention also has obvious advantage:
Such as, the large eccentricity ellipsoidal reflector that relevant application for a patent for invention is used does not have ready-made product, and the non-spherical surface of ellipsoidal reflector is difficult to grind, grinding precision is difficult to guarantee, so it is more difficult that making is got up, corresponding cost also can be higher, and the short focal length lens using in the present invention is applied very universal in existing electronic product, so be easy to obtain, cost can be much lower;
Such as, in relevant application for a patent for invention, micro-drift angle generation module and ellipsoidal reflector need optics confocal, slightly deviation (deviation of micron number magnitude does not allow) just can not realize demonstration, even strictly confocal while making, in use being subject to extraneous vibration is also easy to destroy confocal, compare, so do not have confocal arrangement to there will not be above-mentioned situation in the present invention;
Such as, to compare to micro-drift angle generation module in relevant application for a patent for invention, the micro-translation modular structure of light of the present invention is simpler, and productibility is stronger, more easily popularizes;
Such as, device in relevant application for a patent for invention is all brand-new design, do not occur simultaneously with prior art or product, so each device will be made again, so front-end investment can be very large, commercialization threshold is high, and the device using in the present invention has off-the-shelf (having abundant product specification to choose from) or just slightly makes improvements and can obtain in prior art;
Such as, to relevant application for a patent for invention comparison, the present invention is more succinct in the advantageous while one-piece construction of institute that has guaranteed foregoing invention, has obvious cost advantage;
Accompanying drawing explanation:
Fig. 1 is a kind of one-piece construction schematic diagram of the present invention.
Fig. 2 is photoscanning displaying principle schematic diagram of the present invention.
Fig. 3 is the micro-translation module principle of light of the present invention schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, feature of the present invention and principle of work are further described.
Embodiment 1 photoscanning shows and mutual embodiment
With reference to figure 1, the micro-translation module of Wollaston spectral module, light, short focal length lens 4 and the receiving screen 5 that can interacted light scanning display apparatus comprise light source 1 and place successively along light path.Wherein light source 1 is the light source that can produce the thin parallel beam of linear polarization, Wollaston spectral module is comprised of Wollaston prism 21, quarter wave plate 22 and photoreceptor 23, the thin parallel beam sending from light source 1 incides a side (side that o, e light separate) of Wollaston prism 21, after superrefraction, from another side outgoing (now o, e light coincide together) of Wollaston prism 21, vertically pass the micro-translation module of the rear arrival light of quarter wave plate 22.Mirror unit 32 and control device 31 that the micro-translation module of light can change position by two covers form, the definite plane of the normal of two mirror units 32 and light path is orthogonal, described mirror unit 32 can be the square-shaped planar catoptron that a length of side is 1um～1cm, and motion in one dimension can be done along light path under the drive of control device 31 by mirror unit 32.
The structure of the micro-translation module of described light is shown in Fig. 3, this device is comprised of collapsible base (being control device 31) and catoptron (being mirror unit 32), collapsible base can be electrostriction material, the electric signal being applied in collapsible base by change can change the length of substrate, thereby changes the position of mirror unit 32.
Photoscanning displaying principle, referring to Fig. 2, is reflexed to short focal length lens 4 by the micro-translation module of light from the light of Wollaston prism 21 outgoing, is refracted to receiving screen 5 more afterwards by short focal length lens 4, forms a hot spot on receiving screen 5.Control signal on the control device that is added in the micro-translation module of light is when certain limit is made intermittent scanning, scan variations also can be made in certain limit in the position of mirror unit 32, and then the light that reflects of mirror unit 32 and mirror unit 32 are not offset the light that front-reflection goes out and can produce a small translation constantly changing, this small translation is amplified by short focal length lens 4, final emergent ray can form picture in the enterprising line scanning of receiving screen 5, realizes the object that photoscanning shows.
The principle of man-machine interaction is, when certain position of receiving screen 5 is touched, can there is diffuse reflection owing to touching the existence of object (such as finger) in the light that this position receives, when therefore former road turns back to the light of short focal length lens 4 and do not touch, reflected light information has significant difference, by short focal length lens 4, reflexed to the micro-translation module of light again, light by the micro-translation module of light can pass quarter wave plate 22 again, light now after light source 1 sets out due to twice through quarter wave plate 22, its direction of vibration turns over 90 degree and (e occurs, o conversion), again by the rear light of Wollaston prism 21, can not return to light source 1 but received by photoreceptor 23.When photoreceptor 23 receives the light reflecting from receiving screen 5, the position being touched on receiving screen and the control signal being added on the control device 31 of the micro-translation module of light are one-to-one relationship, therefore the position that in the time of can receiving light according to photoreceptor 23, corresponding control signal judgement touches, thus realize human-computer interaction function.
The present invention is touched the entrained positional information of light that back reflection returns except directly reading receiving screen 5, can also read the luminous point information that Fescue pen projects on receiving screen 5, now remove the quarter wave plate 22 in Wollaston spectral module, system also can be worked, in addition, paper document directly can also be attached to display screen (being receiving screen 5) and above by scanning, read the information on paper document.
The micro-translation module of embodiment 2 light embodiment
With reference to figure 3, the micro-translation module of light is comprised of collapsible base and catoptron unit, when substrate is flexible reflection ray can and former reflection ray between produce translation.
The electrostriction material that the collapsible base of the micro-translation module of light provides except embodiment 1, can also adopt an electromagnet and armature plate to clip the structure of one deck resilient material, and mirror unit 32 is fixed together with armature plate.By changing the electric current of electromagnet, just can change its gravitation to armature plate like this, thereby realize the control to mirror unit 32 positions.
Embodiment 3 Wollaston spectral module embodiment
Wollaston prism left side o light and e light is light path altogether, two-beam road, right side separately, therefore two one of the beam tube light path end that right side separates can be settled light source 1, another branch road can arrange photoreceptor 23, the effect of 1/4 slide 22 is to make polarisation of light direction turn over 90 °, it should be noted that from the vibration plane of the light of light source 1 outgoing and the angle between 1/4 slide 22 principal sections be 45 °.
Embodiment 4 is applied to color laser TV and shows
When the present invention shows for color laser TV, light source 1 need to three light source 1(on Fig. 1 light source 1 part according to identical light path principle placement three primary light source), provide respectively three primary colours thin parallel beam.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. photoscanning demonstration and an interactive device, its structure has: light source (1) and receiving screen (5) that the thin parallel beam of linear polarization is provided; It is characterized in that: the micro-translation module of Wollaston spectral module, light and the short focal length lens 4 between light source (1) and receiving screen (5), along light path, placed successively in addition; Described Wollaston spectral module, consists of Wollaston prism (21), quarter wave plate (22) and photoreceptor (23); The micro-translation module of described light, that two the mirror units (32) that driven respectively by two control device (31) form, two planes that the normal of two mirror units (32) and light path are determined are orthogonal, and mirror unit (32) carries out motion in one dimension along light place straight line under the acting force of control device (31); Described short focal length lens (4) is that a focal length is at the convex lens of millimeter magnitude.
2. photoscanning demonstration according to claim 1 and interactive device, it is characterized in that, described control device (31), by collapsible base, formed, collapsible base is electrostriction material, the electric signal changing is added on electrostriction material, and mirror unit (32) is fixed in collapsible base.
3. photoscanning demonstration according to claim 1 and interactive device, it is characterized in that, described control device (31), between an electromagnet and armature plate, to clip the structure of one deck resilient material, the electric signal changing is added on magnet coil, and mirror unit (32) is fixed on armature plate.
4. according to photoscanning demonstration and interactive device described in claim 1,2 or 3, it is characterized in that, described mirror unit, is that the length of side is the square-shaped planar catoptron of 1um～1cm.
5. the photoscanning demonstration of claim 1 and an application for interactive device, shows for color laser TV; Described light source (1) need to, with three light sources, provide respectively three primary colours thin parallel beam; The upper added electric signal of described control device (31) is TV signal.
6. can an interacted light scanning display apparatus, its structure has: light source (1) and receiving screen (5); It is characterized in that: between light source (1) and receiving screen (5), have the micro-translation generation module of Wollaston spectral module (2), light (3), the short focal length lens (4) along light path, placed successively;
Described light source (1) is to provide the light source of the thin parallel beam of linear polarization;
Described Wollaston spectral module (2) consists of Wollaston prism (21), quarter wave plate (22) and photosensitive unit (23); 1/4 slide is arranged on Wollaston prism and penetrates in the common optical pathways of o light and e light and perpendicular to light path, the principal section of 1/4 slide with from the incident light direction of vibration angle at 45 ° of light source;
The micro-translation generation module of described light (3) is accept the thin parallel beam of light source (1) generation and make light produce the device of certain translation;
Described short focal length lens (4) is that a focal length is at the convex lens of millimeter magnitude.
According to claim 1 a kind of can interacted light scanning display apparatus, it is characterized in that: the polarization direction of the thin parallel beam of linear polarization that described light source (1) produces and the Wollaston prism o light branch road in light splitting read module (2) or e light branch road match.
According to claim 1 a kind of can interacted light scanning display apparatus, it is characterized in that: the micro-translation generation module of described light (3) is the mirror unit of two cuff control device, the normal of two cover mirror units is orthogonal with the definite plane of light path, and mirror unit can do motion in one dimension along optical path direction under the driving of control device; Described control device is one and drives mirror unit according to added control signal, thereby changes the device of mirror unit position.
According to claim 3 a kind of can interacted light scanning display apparatus, it is characterized in that: described mirror unit is the square-shaped planar catoptron that a length of side is 1um～1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098140.7A CN103995351B (en) | 2014-03-15 | 2014-03-15 | A kind of photoscanning display and interactive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098140.7A CN103995351B (en) | 2014-03-15 | 2014-03-15 | A kind of photoscanning display and interactive device |
Publications (2)
| Publication Number | Publication Date |
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| CN103995351A true CN103995351A (en) | 2014-08-20 |
| CN103995351B CN103995351B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410098140.7A Expired - Fee Related CN103995351B (en) | 2014-03-15 | 2014-03-15 | A kind of photoscanning display and interactive device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467609A (en) * | 2016-01-15 | 2016-04-06 | 南开大学 | Reference light beam splitting method based on Wollaston prism space angle division multiplexing holography, and special-purpose device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07333544A (en) * | 1994-06-07 | 1995-12-22 | Dainippon Screen Mfg Co Ltd | Optical deflector |
| US20090051995A1 (en) * | 2006-06-01 | 2009-02-26 | Mark Shechterman | Linear Optical Scanner |
| CN101382654A (en) * | 2008-09-23 | 2009-03-11 | 北京理工大学 | Light beam rotary apparatus and method capable of compensating intensity variation caused by polarization |
| CN101915542A (en) * | 2010-08-05 | 2010-12-15 | 哈尔滨工业大学 | Biaxial MEMS reflective galvanometer and F-Theta lens-based linear scanning system used for laser heterodyne interferometer |
| CN103631015A (en) * | 2013-12-06 | 2014-03-12 | 吉林大学 | High-speed optical scanning display and read device |
-
2014
- 2014-03-15 CN CN201410098140.7A patent/CN103995351B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07333544A (en) * | 1994-06-07 | 1995-12-22 | Dainippon Screen Mfg Co Ltd | Optical deflector |
| US20090051995A1 (en) * | 2006-06-01 | 2009-02-26 | Mark Shechterman | Linear Optical Scanner |
| CN101382654A (en) * | 2008-09-23 | 2009-03-11 | 北京理工大学 | Light beam rotary apparatus and method capable of compensating intensity variation caused by polarization |
| CN101915542A (en) * | 2010-08-05 | 2010-12-15 | 哈尔滨工业大学 | Biaxial MEMS reflective galvanometer and F-Theta lens-based linear scanning system used for laser heterodyne interferometer |
| CN103631015A (en) * | 2013-12-06 | 2014-03-12 | 吉林大学 | High-speed optical scanning display and read device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467609A (en) * | 2016-01-15 | 2016-04-06 | 南开大学 | Reference light beam splitting method based on Wollaston prism space angle division multiplexing holography, and special-purpose device thereof |
| CN105467609B (en) * | 2016-01-15 | 2017-12-15 | 南开大学 | A kind of the reference light beam-splitting method and its special purpose device of the spatially angular multiplexing holography based on Wollaston prism |
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| Publication number | Publication date |
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| CN103995351B (en) | 2016-02-24 |
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Granted publication date: 20160224 Termination date: 20170315 |