CN102293622A - Optical imaging system for electronic hysteroscope - Google Patents
Optical imaging system for electronic hysteroscope Download PDFInfo
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- CN102293622A CN102293622A CN2011100013309A CN201110001330A CN102293622A CN 102293622 A CN102293622 A CN 102293622A CN 2011100013309 A CN2011100013309 A CN 2011100013309A CN 201110001330 A CN201110001330 A CN 201110001330A CN 102293622 A CN102293622 A CN 102293622A
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Abstract
The invention belongs to the field of medical diagnostic devices, and relates to an optical imaging system for an electronic hysteroscope, which is composed of five refraction lenses, wherein the curvature radii of the front and back surfaces of the first lens are respectively a positive value, and the first lens is made of LACL7; the curvature radius of the front surface of the second lens is a positive value, the curvature radius of the back surface is a negative value, and the second lens is made of BAFD5; the curvature radius of the front surface of the third lens is a negative value, the curvature radius of the back surface is a positive value, and the third lens is made of FDS3; the curvature radius of the front surface of the fourth lens is a positive value, the curvature radius of the back surface is a negative value, and the fourth lens is made of TAF3; the curvature radius of the front surface of the fifth lens is a positive value, the curvature radius of the back surface is a negative value, the back surface is an aspheric surface, and the fifth lens is made of TAC4; and the focal power of the optical system composed of the first lens and second lens is a negative value, and the focal power of the optical system composed of the third lens, fourth lens and fifth lens is a positive value.
Description
Technical field
The invention belongs to the medical diagnosis instrument field.
Background technology
The history of endoscope has experienced from rigid endoscope optical to fibre optic endoscopes the process to fujinon electronic video endoscope again.Along with quasiconductor and fast development of computer technology, the nineteen eighty-three American has at first invented fujinon electronic video endoscope and has been applied to clinically, is considered to the 3rd milestone on endoscope's development history.Fujinon electronic video endoscope is not by optical lens or optical fibers conducting image, but change luminous energy into electric energy by being contained in the optocoupler components CCD that endoscope's tip is called as microcam, pass through image processor again " reconstruction " image fine definition, that color is true to nature, obtained application more and more widely clinically.An early diagnosis that important applied field is a uterus carcinoma of video image dendoscope.The hard portion external diameter of medical electric scope has all exceeded does not at present have the 8 mm upper limits that the diagnosis of anesthesia uterine cavity is allowed.Need do anesthesia when being used for hysteroscope, thereby only be suitable for the situation of performing an operation, be unsuitable for merely, limit its application aspect the uterine cavity early diagnosis of cancer as early diagnosis of cancer.
Summary of the invention
Big in order to overcome existing electronics sight glass hard portion external diameter, be unsuitable for simple deficiency as early diagnosis of cancer, the present invention has designed a kind of electronic hysteroscope optical imaging system of small-bore, and this optical imaging system is applicable to that hard portion external diameter is the electronics sight glass of 8mm.
The present invention solves the scheme that its technical problem adopts:
The electronic hysteroscope optical imaging system is made up of five refractors, and wherein the focal power of the optical system formed of first, second sheet lens is a negative value, the focal power of the optical system that the the 3rd, the 4th, the 5th lens are formed be on the occasion of.Place diaphragm between second lens and the 3rd lens.The rear surface of the 5th lens is an aspheric surface, so that better correction system aberration makes system imaging more clear, it is little to distort.
Specify embodiment of the present invention below in conjunction with accompanying drawing.
Description of drawings
Accompanying drawing 1 is the structural representation of electronic hysteroscope optical imaging system of the present invention.
As shown in Figure 1, the radius of curvature of first lens 1 front and rear surfaces be on the occasion of, material is LACL7; Second lens 2 front surface radius of curvature be on the occasion of, the radius of curvature of rear surface is a negative value, material is BAFD5; The 3rd lens 3 front surface radius of curvature are negative value, the radius of curvature of rear surface be on the occasion of, material is FDS3; The 4th lens 4 front surface radius of curvature be on the occasion of, the radius of curvature of rear surface is a negative value, material is TAF3; The 5th lens 5 front surface radius of curvature be on the occasion of, the radius of curvature of rear surface is a negative value, and rear surface 7
Be aspheric surface, material is TAC4.Diaphragm 6 is between second lens 2 and the 3rd lens 3.The focal power of the optical system that first lens 1 and second lens 2 are formed is a negative value, the focal power of the optical system that the 3rd lens 3, the 4th lens 4, the 5th lens 5 are formed be on the occasion of.The 5th lens 5 rear surfaces 7 are aspheric surface, better the correction system aberration.
Claims (4)
1. electronic hysteroscope optical imaging system, it is characterized in that: the electronic hysteroscope optical imaging system is made up of five refractors and a diaphragm.
2. electronic hysteroscope optical imaging system as claimed in claim 1 is characterized in that: in described five refractors the radius of curvature of first lens front and rear surfaces be on the occasion of, material is LACL7; Second lens front surface radius of curvature be on the occasion of, the radius of curvature of rear surface is a negative value, material is BAFD5; The 3rd lens front surface radius of curvature is negative value, the radius of curvature of rear surface be on the occasion of, material is FDS3; The 4th lens front surface radius of curvature be on the occasion of, the radius of curvature of rear surface is a negative value, material is TAF3; The 5th lens front surface radius of curvature be on the occasion of, the radius of curvature of rear surface is a negative value, and the rear surface is aspheric surface, material is TAC4.
3. electronic hysteroscope optical imaging system as claimed in claim 1 is characterized in that: described five refractors, and the focal power of the optical system of first lens and second lens composition is a negative value; The focal power of the optical system that the 3rd lens, the 4th lens and the 5th lens are formed be on the occasion of.
4. electronic hysteroscope optical imaging system as claimed in claim 1 is characterized in that: described diaphragm is between second lens and the 3rd lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100013309A CN102293622A (en) | 2011-01-06 | 2011-01-06 | Optical imaging system for electronic hysteroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100013309A CN102293622A (en) | 2011-01-06 | 2011-01-06 | Optical imaging system for electronic hysteroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102293622A true CN102293622A (en) | 2011-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100013309A Pending CN102293622A (en) | 2011-01-06 | 2011-01-06 | Optical imaging system for electronic hysteroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102293622A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104305951A (en) * | 2014-10-24 | 2015-01-28 | 沈阳理工大学 | Optical imaging system of small-diameter and wide-angle medical electronic endoscope |
| CN112925092A (en) * | 2021-02-04 | 2021-06-08 | 南京信息工程大学 | Electronic hysteroscope imaging lens for gas and liquid uterus expansion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965750A (en) * | 2005-11-14 | 2007-05-23 | 天津菱光科贸有限公司 | Low-distortion electronic endoscope imaging system with 1/4 inch CCD and SVGA display |
| CN101140355A (en) * | 2006-09-05 | 2008-03-12 | 南开大学 | High-resolution low distortion refraction diffraction farrago electric inter lens image-forming system |
-
2011
- 2011-01-06 CN CN2011100013309A patent/CN102293622A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965750A (en) * | 2005-11-14 | 2007-05-23 | 天津菱光科贸有限公司 | Low-distortion electronic endoscope imaging system with 1/4 inch CCD and SVGA display |
| CN101140355A (en) * | 2006-09-05 | 2008-03-12 | 南开大学 | High-resolution low distortion refraction diffraction farrago electric inter lens image-forming system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104305951A (en) * | 2014-10-24 | 2015-01-28 | 沈阳理工大学 | Optical imaging system of small-diameter and wide-angle medical electronic endoscope |
| CN104305951B (en) * | 2014-10-24 | 2015-12-30 | 沈阳理工大学 | Thin footpath Radix Rumicis medical electronic endoscope optical imaging system |
| CN112925092A (en) * | 2021-02-04 | 2021-06-08 | 南京信息工程大学 | Electronic hysteroscope imaging lens for gas and liquid uterus expansion |
| CN112925092B (en) * | 2021-02-04 | 2022-05-10 | 南京信息工程大学 | Electronic hysteroscope imaging lens for gas and liquid uterus expansion |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111228 |