CN103027655A - Lamp optical system for endoscope and lighting device - Google Patents
Lamp optical system for endoscope and lighting device Download PDFInfo
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- CN103027655A CN103027655A CN2012103191181A CN201210319118A CN103027655A CN 103027655 A CN103027655 A CN 103027655A CN 2012103191181 A CN2012103191181 A CN 2012103191181A CN 201210319118 A CN201210319118 A CN 201210319118A CN 103027655 A CN103027655 A CN 103027655A
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Abstract
The invention provides a lamp optical system for an endoscope and a lighting device, which can reduce light intensity deviation among devices. A glass rod (37) is disposed between a light-guiding body (27) inserted in an electronic endoscope (11) and a light source part (31) in a light source device (14). The glass rod (37) reflects illuminating light incident from a rod incident face (37a) while guiding towards a rod shooting face (37b). The diameter of the glass rod (37) is D, and the diameter of a guiding incident face (27a) of the light-guiding body (27) is d. The semi-range full width of the illuminating light with respect to the light strength of the rod shooting face (37b) is Fw. When the maximum offset of the incident position of the illuminating light at the radial direction of the rod shooting face (37b) is A, D)d is satisfied.
Description
Technical field
The present invention relates to for illumination for endoscope optical system and illuminator.
Background technology
Medical electronics endoscope possesses: insert the insertion section in the body; And the operating portion that is used for this insertion section of operation.Front in the insertion section is provided with camera chain and illuminating lens.Be used to from the illumination light of illuminating lens the look-out station in the body be thrown light on.Camera chain has photographic optical system and imaging apparatus, and the look-out station in the illumination is photographed.Carry out after image processes at blood processor from the signal of video signal of imaging apparatus output, be presented on the monitor as the image of look-out station.
The light conductor of being done bunchy by many optical fiber passes through the insertion section.This light conductor is distolateral illuminating lens guiding illumination light forward.The light conductor that front is divided into 2 branches also is known.This light conductor is to 2 illuminating lens guiding illumination light of the left and right sides that is configured in imaging apparatus.
Light supply apparatus comprises: the light sources such as Xe lamp; And will be from the light optically focused of this light source to the light-gathering optics of the plane of incidence of the light conductor of endoscope etc.As light-gathering optics, use paraboloidal mirror or collecting lens etc.
In the inhomogeneous situation of the intensity distributions of the illumination light in the plane of incidence of light conductor, this inhomogeneous outgoing plane that also is delivered to, it is uneven therefore at look-out station illumination to occur.For example, light intensity is higher at the middle body of the range of exposures of illumination light sometimes, but the light intensity step-down then of periphery.Thus, the lightness of observing image produces inequality, makes the diagnosis of pathological changes section become difficulty.
Therefore, known a kind of lamp optical system (for example, with reference to Japanese kokai publication sho 59-26703 communique), uneven in order to prevent illumination, between light-gathering optics and light conductor, disposed the reflection part that reflecting surface forms tubular, for example Glass rod incides in the light conductor the uniform illumination light of light intensity distributions.In this lamp optical system, advance to outgoing plane in the side face reflection by Glass rod from the illumination light of light-gathering optics, so the light intensity distributions in the outgoing plane substantially evenly.
In addition, be divided in the light conductor of 2 branches in front, sometimes from about the light intensity of illumination light of each illuminating lens irradiation produce difference, produce lightness in the right side of image and left side uneven.And because light quantity gathers one-sided illuminating lens, endoscope distal end section becomes high temperature sometimes, produces organism burn etc.By the light conductor of above-mentioned Glass rod as this branching type, can also eliminate this problem.
But light source and light-gathering optics, Glass rod, optical conductor etc. with higher precision assembling, still still can not avoid the incoming position of illumination light on the plane of incidence of Glass rod or light conductor that deviation is arranged mutually.As the reason of the deviation of incoming position, the assembly precision of each parts or the deviation of machining accuracy such as deviation, light-gathering optics eccentric of the installation site between the parts arranged or skew.The deviation of the position of the filament of the bulb that uses as light source in addition, or the electric arc of Xe lamp etc. also becomes reason.
In addition, light-gathering optics is imaged onto spot position with the picture of the electric arc of the filament of bulb or Xe lamp, and filament or electric arc have limited size, its brightness irregularities.In addition, light-gathering optics has multiple aberration.Therefore, filament or electric arc are because of the impact of light-gathering optics, and optically focused is not strict point, but presents the light intensity distributions of expanding as Gaussian distribution curve.
By using Glass rod, can improve the uniformity of light intensity distributions, still because the deviation of the incoming position of illumination light or illumination light optically focused is not to the first-class reason of point, the size of light intensity is according to each fujinon electronic video endoscope or light supply apparatus and difference.
Fig. 8 is illustrated in an example of the intensity distributions in the plane of incidence of Glass rod.This light intensity distributions is calculated the illuminator of utilizing paraboloidal mirror and collecting lens will gather from the illumination light of Xe lamp the plane of incidence of Glass rod and is tried to achieve.Use general light source as fujinon electronic video endoscope, arc length is the light source of 1.2mm, as the Xe lamp.Homogenization based on the light intensity distributions of Glass rod is the light intensity equalization that makes the illumination light that incides this plane of incidence, for example, be that the plane of incidence of the Glass rod of 2mm is in the situation in the scope shown in the labelling G1 at diameter, the light intensity that penetrates from the outgoing plane of this Glass rod is higher.But, be at the plane of incidence in the situation of the scope shown in the labelling G2, penetrate intensity and become quite little.
Owing to become the main cause that the performance of fujinon electronic video endoscope reduces based on the light intensity deviation of aforesaid machine error, so need to improve it.In addition, cause following the light loss of front of insertion section and the deviation of the caloric value that produces based on the light intensity deviation of machine error.In the larger equipment of light intensity, follow the heating quantitative change of light loss many, so the ceiling temperature that it can not allowed above the front by the insertion section.Therefore, in order to tackle the larger equipment of light intensity, need to use the less illuminating lens of light loss, this is subject to the restriction in the design of lamp optical system.
Summary of the invention
The object of the invention is to, a kind of lighting optical system for endoscope and illuminator of strength difference of the illumination light that can reduce each equipment room is provided.
To achieve these goals, in lighting optical system for endoscope of the present invention, satisfy formula between printing opacity rod and the light conductor
And D〉d.The printing opacity rod makes the illumination light from light source portion incide the excellent plane of incidence, guides this illumination light into excellent outgoing plane in internal reflection.Light conductor has the guiding plane of incidence in the face of the circle of excellent outgoing plane, will guide endoscope distal end section into from the illumination light of printing opacity rod.The diameter of the rod plane of incidence is d, and the diameter of printing opacity rod is D.The half range overall with (full width at half-maximum(FWHM) of the light intensity of the illumination light of the rod plane of incidence) be Fw.Illumination light is A with respect to the maximum offset of excellent plane of incidence incoming position diametrically.
The printing opacity rod is preferably guided illumination light into excellent outgoing plane in total reflection.Side face and the contact with air of preferred printing opacity rod, the specific refractivity between utilization and the air produces total reflection.In addition, preferred excellent outgoing plane is close to the guiding plane of incidence.
In endoscope-use illuminator of the present invention, have the light source that produces illumination light, light-gathering optics, printing opacity rod, light conductor and the illuminating lens of aggregated illumination light, and satisfy formula
D〉d.The printing opacity rod makes the illumination light from light source portion incide the excellent plane of incidence, guides this illumination light into excellent outgoing plane in internal reflection.Light conductor has the guiding plane of incidence of the circle of facing with excellent outgoing plane, will guide endoscope distal end section into from the illumination light of printing opacity rod.Illuminating lens is configured in endoscope distal end section, will shine to look-out station from the illumination light of light conductor.The diameter of the guiding plane of incidence is d, and the diameter of printing opacity rod is D.The half range overall with of the light intensity of the illumination light of the rod plane of incidence is Fw.Illumination light is A with respect to the maximum offset of excellent plane of incidence incoming position diametrically.
Light-gathering optics preferably includes: paraboloidal mirror makes the illumination light from light source become almost parallel light; And collecting lens, make the illumination light from paraboloidal mirror gather the excellent plane of incidence.The preferred coupling that uses, this coupling is so that the excellent outgoing plane of printing opacity rod and the mode that guides the plane of incidence to be close to remain on the state that is connected with printing opacity rod and light conductor.
Preferably at the front end of coupling transparent glass cover is installed, the excellent plane of incidence of printing opacity rod and the back of this glass cover are close to.Preferred light source and light-gathering optics are built in the framework of light supply apparatus, and above-mentioned coupling is inserted in this framework.
The invention effect
According to the present invention, if the diameter of the plane of incidence of light conductor is d, the diameter of printing opacity rod is D, and the half range overall with of the light intensity of the illumination light in the plane of incidence of printing opacity rod is F, when the maximum offset of the incoming position that illumination light makes progress in the footpath of the plane of incidence of printing opacity rod is A, owing to satisfied "
" and " D〉d ", so can not make light loss become large, and the difference of the light intensity between the reduction equipment.
Description of drawings
Fig. 1 is the skeleton diagram of endoscopic system.
Fig. 2 is the key diagram that schematically shows lamp optical system.
Fig. 3 is the key diagram of the incident area of each fibre bundle in the expression guiding plane of incidence.
Fig. 4 is the sectional view that is illustrated in the state that has connected light conductor and Glass rod in the coupling.
Fig. 5 is the chart of relation of the degree of deviation of the expression diameter of Glass rod and light intensity.
Fig. 6 is the chart of the relation of the expression diameter of Glass rod and light quantity.
Fig. 7 is the chart of an example of the distribution of the expression light intensity that incides light intensity in the Glass rod and ejaculation.
Fig. 8 is the chart of an example of the light intensity distributions in the plane of incidence of expression Glass rod.
The specific embodiment
Among Fig. 1, endoscopic system 10 comprises fujinon electronic video endoscope 11, blood processor 12 and light supply apparatus 14.Fujinon electronic video endoscope 11 possesses: be inserted in the pliability insertion section 16 in the subject; Be located at the operating portion 17 of the base end part of insertion section 16, be used for controlling and the operation of insertion section 16 of fujinon electronic video endoscope 11; And general flexible cord 18, be used for operating portion 17 is connected respectively to blood processor 12 and light supply apparatus 14.As everyone knows, the leading section 16a of insertion section 16 in the hard cylinder built-in camera chain (photography is optical system, imaging apparatus), illuminating lens 19(with reference to Fig. 2) etc.In addition, in the rear end of leading section 16a, be provided with crooked bending section 16b freely.
At operating portion 17, be provided with 2 angulation knobs (angle knob) 22, action button 23, pliers entrance 24.2 angulation knobs 22 are corresponding with above-below direction and left and right directions, and insertion section 16 is crooked to selected direction.When the rotation amount of angulation knob 22 was larger, crooked quantitative change was large.Action button 23 is used for supplying gas/sending the various operations such as water and attraction.Pliers entrance 24 and the plug in pliers channel connection that leads in the insertion section 16.In general flexible cord 18, be communicated with the aquaporin of supplying gas/send, signal cable, light conductor 27(with reference to Fig. 2) etc.
As shown in Figure 2, lamp optical system 30 comprises: the illuminating lens 19 and the light guide unit 32 that are disposed at leading section 16a.Light guide unit has: insert the light conductor 27, Glass rod 37, the glass cover 36 that lead in the insertion section 16.Light source portion 31 comprises: as the Xe lamp 33 of light source, paraboloidal mirror 34, collecting lens 35 etc.In addition, the incident end 32a of light guide unit 32 is inserted in the framework 14a of light supply apparatus 14.At incident end 32a, comprise successively the guiding plane of incidence 27a of glass cover 36, Glass rod 37, light conductor 27 from light source portion 31 sides.Illuminator comprises: illuminating lens 19, light guide unit 32, light source portion 31 etc.
Illumination light from Xe lamp 33 incides Glass rod 37 via glass cover 36.As everyone knows, Xe lamp 33 discharges to emit illumination light between electrode.In addition, as light source, be not limited to Xe lamp 33, can utilize various lamps or LED etc.In addition, content etc. according to the observation suitably determines color or the wavelength of kind or the illumination light of light source.And, also can be in order to obtain the illumination light of specific wavelength or wave band, and the optical filters such as band filter are set.
Glass rod 37 is printing opacity rod, is configured between light conductor 27 and the light source portion 31, and it is uneven to reduce the illumination that the deviation by intensity distributions causes.Via Glass rod 37, illumination light is to guiding plane of incidence 27a incident.The illumination light that incides in the light conductor 27 from guiding plane of incidence 27a is directed to leading section 16a by this light conductor 27.
As shown in Figure 4, with coupling 40 light conductor 27 and Glass rod 37 are linked.Coupling 40 has female component 41 and the male component 42 of general cylindrical shape.In the hollow bulb of female component 41, accommodate glass cover 36 and Glass rod 37, in the hollow bulb of male component 42, keeping the end of the plane of incidence 27a side of light conductor 27.
Glass rod 37 as the printing opacity rod is that transparent glass is made columniform parts, has circular excellent plane of incidence 37a and excellent outgoing plane 37b at two ends.The axle center quadrature of rod plane of incidence 37a and excellent outgoing plane 37b and Glass rod 37.This Glass rod 37 remains on the excellent keeper 43, and this rod keeper 43 is fixed in the hollow bulb of female component 41.
The uniform function of intensity distributions that above-mentioned Glass rod 37 has the illumination light of making, and, satisfy respectively following formula (1), (2).
D>d ……（2）
D in above-mentioned formula (1), (2) is the diameter of Glass rod 37.D is light conductor 27(guiding plane of incidence 27a) diameter.Fw is the half range overall with of the light intensity of the illumination light among the excellent plane of incidence 37a, is the diameter of light beam that becomes 1/2 position of its peak value by the light intensity of the illumination light of collecting lens 35 optically focused.A is the incoming position maximum offset diametrically of illumination light on excellent plane of incidence 37a.That is, this maximum offset A is the limits of error that determine according to the incoming position precision and in design, uses from the center of excellent plane of incidence 37a to represent to the distance the position of the peak value of the light intensity that becomes illumination light.
In this embodiment, the diameter d of establishing light conductor 27 is 2mm, and half range overall with Fw is 2mm, and maximum offset A is ± 0.5mm so be made as 3mm by the diameter D Glass rod 37, to satisfy formula (1), (2).
Glass rod 37 makes and incides inner illumination light from excellent plane of incidence 37a and advance to excellent outgoing plane 37b in by the side face reflection, makes thus the light intensity of the illumination light that penetrates from excellent outgoing plane 37b even.Rod keeper 43 forms air layer by only contacting and keep the side face at the both ends of Glass rod 37 at the whole side face of the cardinal principle of Glass rod 37.Thus, in Glass rod 37, make the illumination light total reflection, and the decay based on the illumination light intensity that reflects is reduced.
The Glass rod 37 longer uniform effects of intensity distributions that then make are better, but the change of the order of reflection of the illumination light before reaching excellent outgoing plane 37b is many, and it is large that the decay of illumination light becomes.Therefore, preferably the length of Glass rod 37 is made as about 5～15 times of diameter.In this embodiment, the length of Glass rod 37 is made as 21mm, is 7 times of diameter.
Glass cover 36 is be used to preventing that Glass rod 37 is impaired or preventing from adhering to the member of medicament.Each face of this glass cover 36 is and the writing board shape of the axle center quadrature of Glass rod 37, and this glass cover 36 is fixed on the front of female component 41, and excellent plane of incidence 37a is close in the back, and expose to light source portion 31 sides the front.
Male component 42 forms external screw thread around its leading section, by with this external screw thread and the internal screw-thread screw that is formed on the hollow bulb inner peripheral surface of female component 41, and links with female component 41.By this binding, light conductor 27 and Glass rod 37, the consistent and guiding plane of incidence 27a butt and be close under the state of excellent outgoing plane 37b assembled in their axle center.In addition, labelling 46 is be used to the O shape ring that prevents that medicinal liquid etc. from entering from the gap between female component 41 and the male component 42.
If ignore the loss of the inside of Glass rod 37, the light intensity of the illumination light that penetrates from excellent outgoing plane 37b (below, be called rod and penetrate intensity) be the intensity that the light intensity that will incide the illumination light of excellent plane of incidence 37a (below, be called excellent incident intensity) obtains after average.Illumination light is incided in the situation in the Glass rod 37, undeniable because the deviation of the arc position of Xe lamp 33 or the various main causes such as assembly precision of each one, illumination light is offset with respect to the incoming position of excellent plane of incidence 37a (below, be called excellent incoming position).In addition, the illumination light from Xe lamp 33 has the light intensity distributions of upwards expanding with the mountain type in the footpath of light beam.Therefore, when the skew of excellent incoming position, the incident intensity integrated value of excellent incident intensity after with the area integral of excellent plane of incidence 37a changed, increase and decrease so rod penetrates intensity.
In the large situation of diameter D change, even excellent incoming position upwards departs from the footpath of excellent plane of incidence 37a, the variation of incident intensity integrated value also diminishes, and therefore the increase and decrease amount of rod ejaculation intensity also can diminish.As a result, follow the change of light intensity of illumination light of the deviation of excellent incoming position to reduce.
And when the diameter D of Glass rod 37 became particular value, fully large with respect to the light intensity distributions of illumination light, so rod penetrates the effect of improving of the deviation of intensity and becomes and almost can not get the state that improves, this specific diameter was derived by above-mentioned formula (1).
One example of the variation of the degree of deviation B of the rod ejaculation intensity when Fig. 5 illustrates the diameter D that increases Glass rod 37.Same with present embodiment, the maximum offset A that is illustrated in excellent incoming position is that the half range overall with Fw of 0.5mm, illumination light is under the condition of 2mm, the variation of the degree of deviation when the diameter D of Glass rod 37 increases from the 2mm identical with the diameter d of light conductor 27.Degree of deviation B obtains according to following formula (3).The rod of the maximum when in addition, " L0max " in the formula (3), " L0min " diameter that is respectively Glass rod 37 is 2mm penetrates intensity and minimum rod penetrates intensity.In addition, " Lmax ", " Lmin " are respectively that the rod of the arbitrarily maximum under the diameter D penetrates intensity, minimum rod penetrates intensity.When the diameter of Glass rod 37 was 2mm, it hour be " 1.00 " that rod penetrates intensity (relative light intensity), is " 1.96 " during maximum.
B=（Lmax／Lmin）／（L0max／L0min）×100（%）……（3）
On the other hand, for certain, when the diameter D of Glass rod 37 increased, the area of excellent outgoing plane 37b increased with respect to the area difference of guiding plane of incidence 27a in the diameter d of establishing light conductor 27.Therefore, as shown in Figure 6, along with the increase of diameter D, do not incide guide and penetrate the illumination light of face 27a and become many, it is large that the light loss of illumination light becomes.
In addition, in Fig. 6, the mode of the light quantity that incides light conductor 27 during take the diameter D of Glass rod 37 as the 2mm identical with the diameter d of light conductor 27 as 100% represents to incide from Glass rod 37 light quantity of light conductor 27.
As implied above, even the diameter D of Glass rod 37 is made as greater than specific diameter, although it is large that the light loss of illumination light becomes, but because the reduction effect of light intensity deviation can not improve yet, so be made as specific diameter by the diameter D with Glass rod 37, can be in situation about loss not being increased to more than needing, the effect of the maximum of the deviation of the light intensity that is reduced.On the other hand, in order to reduce the deviation of light intensity, produce many light loss, but the sensitivity adjustment by imaging apparatus or carry out the light quantity adjustment by light source portion 31 and can fully tackle.
In addition, reduce the deviation of light intensities by the Glass rod 37 that links with light conductor 27, therefore, do not need to improve light supply apparatus 14 etc., the improvement of one end of light conductor 27 that can be by fujinon electronic video endoscope 11 sides is implemented, so also be favourable structure on the improvement this point of existing device.
Then, the effect of said structure described.When Xe lamp 33 is lit a lamp, incide excellent plane of incidence 37a from the illumination light of this Xe lamp 33.The illumination light that enters the inside of Glass rod 37 from this rod plane of incidence 37a is advanced to excellent outgoing plane 37b when repeatedly carrying out total reflection by its side face, penetrates from excellent outgoing plane 37b.
In Fig. 7 of an example of the variation of the light intensity distributions that illumination light is shown, shown in dotted line, the light intensity distributions of illumination light that incides excellent plane of incidence 37a is inhomogeneous diametrically.Therefore, although have distribution as Gaussian curve since as previously mentioned when repeatedly reflecting by Glass rod 37, thereby shown in solid line, the inhomogeneous of intensity distributions of the illumination light that penetrates from excellent outgoing plane 37b improves.
Illumination light with part ejaculation that guide plane of incidence 27a to be close to from excellent outgoing plane 37b incides this guiding plane of incidence 27a, and the illumination light that penetrates from other parts can not incide light conductor 27.As mentioned above, a part of illumination light that penetrates from Glass rod 37 can not incide light conductor 27 and become loss, still, is utilized owing to this loss on the reduction effect of the light intensity deviation that produces based on Glass rod 37, so can not become the wasteness loss.
Half that incides the illumination light that guides plane of incidence 27a from excellent outgoing plane 37b incides an incident area 38a, and remaining half incides another incident area 38a.The illumination light that incides each incident area 38a is directed to leading section 16a by fibre bundle 38 respectively, and penetrates from each guiding outgoing plane 27b.
But, because light supply apparatus 14 or fujinon electronic video endoscope 11 have machine error, so according to its assembled state, the incoming position of illumination light changes with respect to Glass rod 37, produce difference in the light intensity from the illumination light of illuminating lens 19 irradiations.But, the diameter D of Glass rod 37 satisfies above-mentioned formula (1), (2), therefore, even the incoming position of illumination light has deviation with respect to Glass rod 37, incide the intensity distributions of the illumination light that guides plane of incidence 27a also substantially evenly, the deviation of light intensity is also less simultaneously.Therefore, according to the machine error of light supply apparatus 14 or fujinon electronic video endoscope 11 and their assembled state, can not produce larger difference from the light intensity of the illumination light of illuminating lens 19 irradiation.In addition, between each equipment, the light intensity of illumination light does not produce larger difference, so follow the deviation of caloric value of the light loss in the leading section 16a less yet.
The printing opacity rod glass manufacture of above-mentioned embodiment, but also can be with plastics manufacturings such as allyl resins.In addition, as printing opacity rod, also can be the optical fiber that is consisted of by the core with mutually different refractive indexs and the clad that around this core, forms.At this moment, because the light in the core is incided in the boundary face total reflection between core and clad, so need to not form air layer at the side face of optical fiber.In addition, in the situation of having used this optical fiber, the diameter of core is made as " D ", satisfies formula (1), (2).
Claims (9)
1. a lighting optical system for endoscope is characterized in that,
Possess:
The printing opacity rod of cylindrical shape, this printing opacity rod makes the illumination light from light source portion incide the excellent plane of incidence, and guides this illumination light into excellent outgoing plane in internal reflection;
Light conductor, the guiding plane of incidence with circle of facing with above-mentioned excellent outgoing plane will guide to endoscope's leading section from the above-mentioned illumination light of above-mentioned printing opacity rod,
Be d at the diameter of establishing the above-mentioned guiding plane of incidence, the diameter of above-mentioned printing opacity rod is D, the half range overall with of the light intensity of above-mentioned illumination light in the above-mentioned excellent plane of incidence is Fw, when illumination light is A with respect to the incoming position maximum offset diametrically of the above-mentioned excellent plane of incidence, satisfies following formula:
D>d。
2. lighting optical system for endoscope according to claim 1 is characterized in that,
Above-mentioned printing opacity rod is guided above-mentioned illumination light into excellent outgoing plane in total reflection.
3. lighting optical system for endoscope according to claim 2 is characterized in that,
The side face of above-mentioned printing opacity rod and contact with air, the specific refractivity between utilization and the air produces above-mentioned total reflection.
4. each described lighting optical system for endoscope is characterized in that according to claim 1 ~ 3,
Above-mentioned excellent outgoing plane and the above-mentioned guiding plane of incidence are close to.
5. an endoscope-use illuminator is characterized in that,
Possess:
Light source produces illumination light;
Light-gathering optics is used for assembling above-mentioned illumination light;
The printing opacity rod of cylindrical shape, this printing opacity rod makes the illumination light from above-mentioned light-gathering optics incide the excellent plane of incidence, and guides this illumination light into excellent outgoing plane in internal reflection;
Light conductor, the guiding plane of incidence with circle of facing with above-mentioned excellent outgoing plane will guide to endoscope's leading section from the above-mentioned illumination light of above-mentioned printing opacity rod; And
Illuminating lens is provided in endoscope distal end section, will shine to look-out station from the illumination light of above-mentioned light conductor,
If the diameter of the above-mentioned guiding plane of incidence is d, the diameter of above-mentioned printing opacity rod is D, the half range overall with of the light intensity of above-mentioned illumination light on the above-mentioned excellent plane of incidence is Fw, when illumination light is A with respect to the incoming position maximum offset diametrically of the above-mentioned excellent plane of incidence, satisfies following formula:
D>d。
6. endoscope-use illuminator according to claim 5 is characterized in that,
Above-mentioned light-gathering optics comprises:
Paraboloidal mirror makes above-mentioned illumination light become almost parallel light; And
Collecting lens makes illumination light from this paraboloidal mirror to above-mentioned excellent plane of incidence optically focused.
7. endoscope-use illuminator according to claim 5 is characterized in that,
Possess coupling, this coupling is so that the mode that above-mentioned excellent outgoing plane and the above-mentioned guiding plane of incidence are close to remains on the state that is connected with above-mentioned printing opacity rod and above-mentioned light conductor.
8. endoscope-use illuminator according to claim 7 is characterized in that,
Front end at above-mentioned coupling is equipped with transparent glass cover, and the above-mentioned excellent plane of incidence of above-mentioned printing opacity rod and the back of this glass cover are close to.
9. endoscope-use illuminator according to claim 8 is characterized in that,
Above-mentioned light source and above-mentioned light-gathering optics are built in the framework of light supply apparatus, and above-mentioned coupling is inserted in this framework.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011216677A JP5389884B2 (en) | 2011-09-30 | 2011-09-30 | Endoscope illumination optical system and illumination device |
| JP216677/2011 | 2011-09-30 |
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| Publication Number | Publication Date |
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| CN103027655A true CN103027655A (en) | 2013-04-10 |
| CN103027655B CN103027655B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210319118.1A Active CN103027655B (en) | 2011-09-30 | 2012-08-31 | Lighting optical system for endoscope and illuminator |
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| CN (1) | CN103027655B (en) |
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| CN105286761A (en) * | 2015-09-29 | 2016-02-03 | 微创（上海）医疗机器人有限公司 | Electronic endoscope |
| CN106510607A (en) * | 2016-12-07 | 2017-03-22 | 上海澳华光电内窥镜有限公司 | Optimal illuminating system of endoscope and electronic endoscope |
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- 2011-09-30 JP JP2011216677A patent/JP5389884B2/en active Active
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2012
- 2012-08-31 CN CN201210319118.1A patent/CN103027655B/en active Active
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105286761A (en) * | 2015-09-29 | 2016-02-03 | 微创（上海）医疗机器人有限公司 | Electronic endoscope |
| CN106510607A (en) * | 2016-12-07 | 2017-03-22 | 上海澳华光电内窥镜有限公司 | Optimal illuminating system of endoscope and electronic endoscope |
| CN106510607B (en) * | 2016-12-07 | 2019-10-01 | 上海澳华光电内窥镜有限公司 | A kind of endoscope illumination optical system and fujinon electronic video endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103027655B (en) | 2015-12-02 |
| JP2013075027A (en) | 2013-04-25 |
| JP5389884B2 (en) | 2014-01-15 |
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