CN102657508A - Endoscopic objective set and assembly method thereof - Google Patents
Endoscopic objective set and assembly method thereof Download PDFInfo
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- CN102657508A CN102657508A CN2012101435393A CN201210143539A CN102657508A CN 102657508 A CN102657508 A CN 102657508A CN 2012101435393 A CN2012101435393 A CN 2012101435393A CN 201210143539 A CN201210143539 A CN 201210143539A CN 102657508 A CN102657508 A CN 102657508A
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- lens
- cover glass
- protective gas
- diaphragm
- planoconvex
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- Endoscopes (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The invention discloses an endoscopic objective set and an assembly method thereof, and relates to an improvement on an endoscopic objective set and an assembly method thereof. The invention provides an endoscopic objective set capable of avoiding a 'fogging' phenomenon in an optical system on the premise that a simple structure and a large view field are ensured and the optical flux is effectively improved and an assembly method thereof. The endoscopic objective set comprises an objective base, wherein the objective seat is arranged in the objective base; the objective set sequentially comprises protective glass, a diaphragm, a plano-convex lens and a lens; the protective glass is fixedly connected with the plane of the plano-convex lens, and the diaphragm is arranged between the protective glass and the plano-convex lens; a clearance is formed between the plano-convex lens and the lens, and the convex surface of the plano-convex lens is opposite to the inner convex surface of the lens; and a protective gas is filled in the clearance.. The endoscopic objective set is large in view field angle, convenient to machine and high in imaging quality.
Description
Technical field
The present invention relates to medical instruments field, relate in particular to improvement endoscope's objective lens and assemble method thereof.
Background technology
Endoscope is a kind of medical treatment and industrial apparatus that is widely used in diagnosis, and splanchnoscopy can be reached the purpose of observing human internal organs and industrial part inner passage with minimum injury.Basic skills is to use an elongated optical system to stretch into human body and parts are inner, to reach the purpose of inspection inner passage.
Thin diameter endoscope of the prior art mostly is made up of grin lens, but grin lens compare with optical lens, shortcomings such as image quality is poor, the angle of visual field is little, accurate processing difficulties are arranged.
In addition, generally all leave the space between the eyeglass of optical system mirror group, if in conventional air ambient, assemble; So in use; Because the temperature contrast between external environment condition and the entering inside of human body environment can cause the inner surface of eyeglass " to haze ", the effect that influence is observed.
Summary of the invention
The present invention is directed to above problem, provide a kind of guarantee simple in structure, the visual field is big, effectively improves under the logical light quantity prerequisite, can avoid the endoscope lens group and the assemble method thereof of inner " hazing " phenomenon of optical system.
Technical scheme of the present invention is: comprise microscope base; Said objective lens is located in the said microscope base; Said objective lens comprises cover glass, diaphragm, planoconvex lens and lens successively; The plane of said cover glass and planoconvex lens is fixedly connected, and said diaphragm is located between said cover glass and the planoconvex lens; The interior convex surface of convex surface and lens that between said planoconvex lens and lens, is provided with gap and said planoconvex lens is relative; Be filled with protective gas in the said gap.
The outer face of said lens is plane, convex surface or concave surface.
The external diameter of said each eyeglass is φ 0.05-1.00mm.
The front end face of said cover glass tilts, and the angle of inclination is 3-120 °.
The cover glass of said inclination is constituted through optical cement by one or more prism.
Assemble method of the present invention is in be fixedly connected sequentially operation in said microscope base of said cover glass, diaphragm, planoconvex lens and lens in the protective gas environment and carries out.
Said protective gas is nitrogen and carbon dioxide.
Said protective gas is a noble gas.
Said protective gas pressure is 0.5 * 10
5-0.9 * 10
5Pascal.
Endoscope lens group of the present invention adopts balsaming lens (being that planoconvex lens and cover glass employing optical cement is bonding) and lens combination, is provided with adjustable clearances in the middle of both, realizes the needs to working environment; Diaphragm in the middle of balsaming lens has improved the quality of imaging, and the outer face of lens can be coupled with image guide bundles, optical inversion system or sense electronics optical device (CCD, CMOS etc.) simultaneously, forms rigid, soft or fujinon electronic video endoscope.The present invention is in the environment of protective gas when assembling, avoids contacting the air that the outside has humidity.Like this, residual in the space between eyeglass is exsiccant protective gas, in use, no matter has the great temperature difference, " hazing " phenomenon also can not occur, promotes the quality of imaging greatly.In addition, assembling under the pressure that is lower than 1 normal atmosphere, residual small calymma in the optical cement in the time of avoiding gluing together.The angle of visual field of the present invention is big, be convenient to processing and image quality is high.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is the structural representation of another optimization product of the present invention;
1 is microscope base among the figure, the 2nd, and cover glass, the 21st, prism one, 22nd, prism two, 23rd, prism three, 3rd, diaphragm, the 31st, diaphragm opening, the 4th, planoconvex lens, the 5th, lens, the 51st, concave surface, the 6th, gap, the 7th, optical fiber, the 71st, gap two.
The specific embodiment
The present invention is as shown in Figure 1; Comprise microscope base 1; Said objective lens is located in the said microscope base 1; Said objective lens comprises cover glass 2, diaphragm 3, planoconvex lens 4 and lens 5 successively, and the plane of said cover glass 2 and planoconvex lens 4 is fixedly connected, and said diaphragm 3 is located between said cover glass 2 and the planoconvex lens 4; The interior convex surface of convex surface and lens 5 that between said planoconvex lens 4 and lens 5, is provided with gap 6 and said planoconvex lens 4 is relative; Be filled with protective gas in the said gap 6.
The outer face of said lens 5 is plane, convex surface or concave surface (concave surface 51 as shown in Figure 2).
The external diameter of said each eyeglass is φ 0.05-1.00mm.
The front end face of said cover glass 2 tilts, and the angle of inclination is 3-120 °.
The cover glass 2 of said inclination is constituted through optical cement by one or more prism (this example adopts three prisms, prism 1, prism 2 22 and prism 3 23).
Assemble method of the present invention is in be fixedly connected sequentially operation in said microscope base 1 of said cover glass 2, diaphragm 3, planoconvex lens 4 and lens 5 in the protective gas environment and carries out.This case aforesaid " fixed connection " connects for hermetic seal.
Said protective gas is nitrogen and carbon dioxide.
Said protective gas is a noble gas.
Said protective gas pressure is 0.5 * 10
5-0.9 * 10
5Pascal.
Moisture content is 0-0.5% in the said protective gas.Pure, exsiccant air also can satisfy use.
Under above-mentioned protective gas environment with pressure requirement, one is two gaps, and what be full of in gap 6 and gap 2 71 (when the rear end face of lens 5 is concave surface, and the gap that forms between the optical fiber) is protective gas; The 2nd, under environment, when gummed diaphragm 3, prism group (being combined cover glass 2), can effectively avoid optical cement to produce calymma less than 1 normal atmosphere; Because under minimum external diameter (φ 0.05-1.00mm) condition, the diameter of the diaphragm opening 31 of diaphragm 3 littler, little in this size, if in the hole, there is calymma (bubble in the optical cement), can influence whole observing effect.
The above-mentioned specific embodiment only is to exemplary explanation of the present invention, the conspicuous modification that those skilled in the art carries out the present invention on this basis or be equal to replacement and all should be regarded as dropping in protection scope of the present invention.
Claims (9)
1. endoscope lens group; Comprise microscope base; Said objective lens is located in the said microscope base, it is characterized in that, said objective lens comprises cover glass, diaphragm, planoconvex lens and lens successively; The plane of said cover glass and planoconvex lens is fixedly connected, and said diaphragm is located between said cover glass and the planoconvex lens; The interior convex surface of convex surface and lens that between said planoconvex lens and lens, is provided with gap and said planoconvex lens is relative; Be filled with protective gas in the said gap.
2. a kind of endoscope lens group according to claim 1 is characterized in that the outer face of said lens is plane, convex surface or concave surface.
3. a kind of endoscope lens group according to claim 1 is characterized in that the external diameter of said each eyeglass is φ 0.05-1.00mm.
4. a kind of endoscope lens group according to claim 1 is characterized in that, the front end face of said cover glass tilts, and the angle of inclination is 3-120 °.
5. a kind of endoscope lens group according to claim 1 is characterized in that the cover glass of said inclination is constituted through optical cement by one or more prism.
6. the assemble method of the said endoscope lens group of claim 1 is characterized in that, be fixedly connected sequentially operation in said microscope base of said cover glass, diaphragm, planoconvex lens and lens is in the protective gas environment and carries out.
7. assemble method according to claim 6 is characterized in that, said protective gas is nitrogen and carbon dioxide.
8. assemble method according to claim 6 is characterized in that, said protective gas is a noble gas.
9. assemble method according to claim 6 is characterized in that, said protective gas pressure is 0.5 * 10
5-0.9 * 10
5Pascal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101435393A CN102657508A (en) | 2012-05-10 | 2012-05-10 | Endoscopic objective set and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101435393A CN102657508A (en) | 2012-05-10 | 2012-05-10 | Endoscopic objective set and assembly method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102657508A true CN102657508A (en) | 2012-09-12 |
Family
ID=46767183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101435393A Pending CN102657508A (en) | 2012-05-10 | 2012-05-10 | Endoscopic objective set and assembly method thereof |
Country Status (1)
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| CN (1) | CN102657508A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147713A (en) * | 1984-01-12 | 1985-08-03 | Olympus Optical Co Ltd | Hard endoscope optical system |
| JPS62260116A (en) * | 1986-05-06 | 1987-11-12 | Toshiba Corp | Fiber scope for low temperature |
| JPH10148744A (en) * | 1996-11-15 | 1998-06-02 | Fuji Photo Optical Co Ltd | Lens device |
| JP2767106B2 (en) * | 1988-02-26 | 1998-06-18 | 旭光学工業株式会社 | Objective lens for electronic endoscope |
| JPH10170794A (en) * | 1996-12-10 | 1998-06-26 | Fuji Photo Optical Co Ltd | Lens device of endoscope |
| US20020186478A1 (en) * | 2001-06-07 | 2002-12-12 | Fuji Photo Optical Co., Ltd. | Lens assembly for endoscopic lens system |
| CN1409147A (en) * | 2001-09-27 | 2003-04-09 | 富士写真光机株式会社 | Method for producing front optical part of endoscope |
| WO2006004123A1 (en) * | 2004-07-05 | 2006-01-12 | Olympus Medical Systems Corp. | Electronic endoscope |
| CN1979243A (en) * | 2005-12-06 | 2007-06-13 | 日立麦克赛尔株式会社 | Image pickup apparatus and method for manufacturing the same |
-
2012
- 2012-05-10 CN CN2012101435393A patent/CN102657508A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147713A (en) * | 1984-01-12 | 1985-08-03 | Olympus Optical Co Ltd | Hard endoscope optical system |
| JPS62260116A (en) * | 1986-05-06 | 1987-11-12 | Toshiba Corp | Fiber scope for low temperature |
| JP2767106B2 (en) * | 1988-02-26 | 1998-06-18 | 旭光学工業株式会社 | Objective lens for electronic endoscope |
| JPH10148744A (en) * | 1996-11-15 | 1998-06-02 | Fuji Photo Optical Co Ltd | Lens device |
| JPH10170794A (en) * | 1996-12-10 | 1998-06-26 | Fuji Photo Optical Co Ltd | Lens device of endoscope |
| US20020186478A1 (en) * | 2001-06-07 | 2002-12-12 | Fuji Photo Optical Co., Ltd. | Lens assembly for endoscopic lens system |
| CN1409147A (en) * | 2001-09-27 | 2003-04-09 | 富士写真光机株式会社 | Method for producing front optical part of endoscope |
| WO2006004123A1 (en) * | 2004-07-05 | 2006-01-12 | Olympus Medical Systems Corp. | Electronic endoscope |
| CN1979243A (en) * | 2005-12-06 | 2007-06-13 | 日立麦克赛尔株式会社 | Image pickup apparatus and method for manufacturing the same |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120912 |