CN103293656A - Technology for improving lighting effect of hard tube endoscope edges - Google Patents
Technology for improving lighting effect of hard tube endoscope edges Download PDFInfo
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- CN103293656A CN103293656A CN201210051241XA CN201210051241A CN103293656A CN 103293656 A CN103293656 A CN 103293656A CN 201210051241X A CN201210051241X A CN 201210051241XA CN 201210051241 A CN201210051241 A CN 201210051241A CN 103293656 A CN103293656 A CN 103293656A
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- endoscope
- hard tube
- optical fiber
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- tube
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Abstract
The invention discloses a technology for improving a lighting effect of hard tube endoscope edges, and relates to the technology of industrial and medical detecting instruments. The technology can solve the problem that due to the fact that lighting fiber numerical apertures and fiber installation numbers of various hart tube endoscopes are limited, lighting in an observing field is uneven. According to the technology, a plurality of sets of glass optical fibers with large numberical apertures are filled into a position between an inner tube and an outer tube of a hard tube endoscope for enlarging a lighting field. A wedge tube is inserted into the middle of the headmost end of the optical fibers to enable the optical fibers close to the outer side of the end face of the wedge tube to incline outwards, the edge positions of the observing field of the hard tube endoscope are evenly and effectively lightened, the light intensity difference between the center of the observing field and the edges is reduced, and finally a lighting field close to evenness and larger than 70 degrees can be provided. Therefore, the lighting effect of the edges of the hard tube endoscope is improved.
Description
Technical field
The present invention relates to a kind of technology that is applied to industry and medical treatment detection apparatus.
Background technology
Endoscope both can be used as the medical optical instrument of diagnosis and treatment, also can be used as industrial detection equipment, had had to go up century-old history.Though fiberscope, fujinon electronic video endoscope and ultrasonic electronic mirror have appearred now, medical and industrial hard tube endoscope still with the picture element of its high-quality, Minimally Invasive Surgery equipment, cheap price and can the high temperature high voltage resistant sterilization etc. advantage be used widely.Various hard tube endoscopes all require polishing even, and this is for detecting and treating all very important.There is an index to explicitly call for the edge light efficiency that detects rigid endoscope, the i.e. ratio of illumination field of view central light strength and edge light intensity in the new rigid endoscope test stone of promulgating of Bureau of Drugs Supervision of country.Because all there is limited numerical aperture in the used lighting fiber of various hard tube endoscopes; therefore the light angle that penetrates from the optical fiber exit end all is restricted; in principle if use lighting fiber all ubiquity observe the problem of illumination unevenness in the visual field; the speck that the center is bright excessively namely appears in illumination field of view; and the visual field is very gloomy on every side; in order to see the scenery at center, visual field clearly; just must adjust the brightness of light source during use; make the center so not dazzling; the result just causes field of view edge darker, makes the big field angle of endoscope lose meaning.Even if select large-numerical aperture optical fiber for use, but because the hard tube endoscope settles the space of optical fiber limited, the optical fiber of limited quantity can only be installed, so all there is the problem of illumination unevenness at present domestic and international existing procucts.The present invention proposes a kind of technology that improves hard tube endoscope edge light efficiency, can thoroughly solve from the endoscope insurmountable illumination unevenness problem over 100 years of coming out.
Summary of the invention
The present invention relates to a kind of new technology of the edge light efficiency for improvement of rigid endoscope.Be example with 0 degree 4mm mirror, adopting said method can solve the problem of illumination unevenness in and the hard tube endoscopic observation visual field that optical fiber installation limited amount causes limited owing to Optical Fiber Numerical Aperture.Concrete summary of the invention is as follows:
1. pack between the inner and outer pipes of the hard tube endoscope multicomponent glass optical fiber of large-numerical aperture is used for increasing logical light visual field, improves logical luminous energy power, and the numerical aperture of light is not less than 0.6;
2. add taper pipe in optical fiber central authorities, make that the optical fiber end of taper pipe outside is crooked laterally, the reinforcement to the marginal position of hard tube endoscopic observation visual field throws light on improves visual field, edge light intensity, thereby improves the edge light efficiency of hard tube endoscope.
Description of drawings
Fig. 1 is the hard tube endoscope distal end schematic cross-section behind the adding taper pipe, among the figure: multicomponent glass optical fiber 1, interior pipe 2, outer tube 3, taper pipe 4, sapphire screening glass 5;
Fig. 2 is the taper pipe structural representation;
Fig. 3 is the bright dipping synoptic diagram of optical fiber before adding taper pipe, among the figure: screen 1, spot center incandescent place 2, utmost point dark place, hot spot edge 3;
Fig. 4 is the bright dipping synoptic diagram of optical fiber after adding taper pipe, among the figure: screen 1, even brightness hot spot 2.
Embodiment
As shown in Figure 1:
(1) select multicomponent glass optical fiber 1 for use, NA is greater than 0.6 for its numerical aperture, the interior pipe 2 of its hard tube endoscope of packing into and outer tube 3 is outer between, be used for providing the illumination field of view greater than 70 °.Inner tube diameter is 2.8mm, and interior external diameter of pipe is 3.0mm, and outer tube diameter is 3.8mm, and outer external diameter of pipe is 4.0mm.
(2) taper pipe 4 is inserted optical fiber central authorities, fix with glue, make near the optical fiber end in the taper pipe wedge shape end face outside crooked laterally, thereby strengthened having reduced the light-intensity difference at center, visual field and edge to observing the illumination of field of view edge, improved the edge light efficiency of hard tube endoscope, solved the problem of illumination unevenness, the upper surface thickness of taper pipe is 0.2mm, and lower surface thickness is 0.08mm, and length is 8mm.
(3) cut the optical fiber that exceeds hard tube endoscope minute surface, and the fiber end face after the cutting is carried out sanding and polishing, make its end face smooth.
Claims (3)
1. the present invention selects for use the multicomponent glass optical fiber of large-numerical aperture to be put between the inner and outer pipes of hard tube endoscope, central authorities add taper pipe at endoscope distal end optical fiber, near the optical fiber end the taper pipe outside is outward-dipping foremost to make endoscope, thereby realize the marginal position of hard tube endoscopic observation visual field is thrown light on uniformly and effectively, reduced the light-intensity difference at center, visual field and edge, finally can provide greater than 70 ° near uniform illumination field of view.
2. according to the described optical fiber of claim 1, it is characterized in that selecting for use multicomponent glass optical fiber, its numerical aperture NA is not less than 0.6.
3. according to the described taper pipe of claim 1, it is characterized in that being put in endoscope optical fiber central authorities foremost, make that the optical fiber end in the taper pipe outside is outward-dipping foremost near endoscope, thereby realize the marginal position of hard tube endoscopic observation visual field is thrown light on uniformly and effectively, reduced the light-intensity difference at center, visual field and edge, finally can provide greater than 70 ° near uniform illumination field of view.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210051241XA CN103293656A (en) | 2012-03-01 | 2012-03-01 | Technology for improving lighting effect of hard tube endoscope edges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210051241XA CN103293656A (en) | 2012-03-01 | 2012-03-01 | Technology for improving lighting effect of hard tube endoscope edges |
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| Publication Number | Publication Date |
|---|---|
| CN103293656A true CN103293656A (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210051241XA Pending CN103293656A (en) | 2012-03-01 | 2012-03-01 | Technology for improving lighting effect of hard tube endoscope edges |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112656349A (en) * | 2020-11-23 | 2021-04-16 | 青岛海信医疗设备股份有限公司 | Endoscopic display, endoscopic system and endoscopic display method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317100A (en) * | 1998-07-24 | 2001-10-10 | 考金特光学技术公司 | Device for coupling low numerical aperture light input into high numerical aperture optical instrument |
| CN1387819A (en) * | 2001-05-30 | 2003-01-01 | 黄钢妹 | Endoscope with built-in cold light source |
| US6516216B1 (en) * | 1996-02-23 | 2003-02-04 | Stryker Corporation | Circumferential transillumination of anatomic junctions using light energy |
| CN1988843A (en) * | 2004-07-26 | 2007-06-27 | 奥林巴斯株式会社 | Endoscope and method of repairing endoscope |
| JP4464518B2 (en) * | 2000-03-14 | 2010-05-19 | オリンパス株式会社 | Endoscope |
-
2012
- 2012-03-01 CN CN201210051241XA patent/CN103293656A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6516216B1 (en) * | 1996-02-23 | 2003-02-04 | Stryker Corporation | Circumferential transillumination of anatomic junctions using light energy |
| CN1317100A (en) * | 1998-07-24 | 2001-10-10 | 考金特光学技术公司 | Device for coupling low numerical aperture light input into high numerical aperture optical instrument |
| JP4464518B2 (en) * | 2000-03-14 | 2010-05-19 | オリンパス株式会社 | Endoscope |
| CN1387819A (en) * | 2001-05-30 | 2003-01-01 | 黄钢妹 | Endoscope with built-in cold light source |
| CN1988843A (en) * | 2004-07-26 | 2007-06-27 | 奥林巴斯株式会社 | Endoscope and method of repairing endoscope |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112656349A (en) * | 2020-11-23 | 2021-04-16 | 青岛海信医疗设备股份有限公司 | Endoscopic display, endoscopic system and endoscopic display method |
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Application publication date: 20130911 |