CN104317037A - Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD - Google Patents
Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD Download PDFInfo
- Publication number
- CN104317037A CN104317037A CN201410571809.XA CN201410571809A CN104317037A CN 104317037 A CN104317037 A CN 104317037A CN 201410571809 A CN201410571809 A CN 201410571809A CN 104317037 A CN104317037 A CN 104317037A
- Authority
- CN
- China
- Prior art keywords
- lens
- towards
- convex
- space
- object space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Endoscopes (AREA)
Abstract
The invention discloses an optical imaging system of an electronic hysteroscopy matched with a 1/4-inch CCD. The optical imaging system of the electronic hysteroscopy matched with the 1/4-inch CCD comprises five coaxial spherical refraction lenses and a diaphragm, the coaxial spherical refraction lenses are arrayed in sequence from the object space to the image space, to be specific, the first lens is a concave lens, the light is diverged when passing through the first lens, and the surfaces of the lens towards the object space and the image space protrude towards the object surface; the second lens is a convex lens, the light is converged when passing through the second lens, the surface of the lens towards the object space protrudes towards the object surface, and the surface towards the image space protrudes towards the image space; the third lens is a concave lens, the light is emitted when passing through the third lens, the surface of the lens towards the object space protrudes towards the image space, and the surface towards the image space protrudes towards the object space; the fourth lens is a convex lens, the light is converged when passing through the fourth lens, and both surfaces of the lens towards the object space and image space protrude towards the object space. The imaging size, spatial resolution and field angle of the optical imaging system of the electronic hysteroscopy matched with the 1/4-inch CCD can meet the requirements of the 1/4-inch CCD, the uterine cavity does not have a dead zone, and the image is clear.
Description
Technical field
The present invention relates to a kind of medical electronic endoscope optical imaging system, particularly relate to the optical imaging system for electronic hysteroscope being applicable to exempt to anaesthetize matched with 1/4 inch CCD.
Background technology
Medical endoscope has very important effect clinically, endoscope is inserted in body cavity, can observe directly in body cavity by endoscope doctor and pathology situation in the tissue morphology of internal organs and body, can facilitate and exactly disease be diagnosed.Compare with hard pipe type scope with common light transmitting fiber scope, fujinon electronic video endoscope not only image more clear bright, color and luster is more true to nature, resolution is higher but also have higher signal to noise ratio (S/N ratio), broader angle of visibility, can find in the past by the pathology that fibrescope does not observe, improve early stage disease detection rate, especially the diagnosis of infantile tumour.Therefore obtain clinically and apply more and more widely.
An important applied field of fujinon electronic video endoscope is the early diagnosis of the cancer of the uterus.The cancer of the uterus is that in global women's malignant tumour, the incidence of disease is deputy malignant tumour, and diagnostic means is ultrasonic technique and fujinon electronic video endoscope mainly.Ultrasonic technique has the shortcoming that image is not direct and resolution is not high, and biopsy of fixing a point under electronic hysteroscope gets more and more and is applied to the diagnosis of the early stage cancer of the uterus, it is advantageous that scope and the form that can observe neoplastic lesion in uterine cavity under direct-view.If but the hard portion external diameter of fujinon electronic video endoscope exceedes the limit of 8mm avoiding anaesthetizing, and need when checking for uterine cavity to anaesthetize, thus be only suitable for the situation of performing an operation, be unsuitable for merely as early diagnosis of cancer.
Current CCD product is existing is of a size of 1/4th inches, even 1/8th inches, pixel count up to hundreds of thousands to millions of.In such a situa-tion, develop and be suitable for merely as the electronic hysteroscope of uterine cancers early diagnosis, design and develop little external diameter, high-resolution endoscopic optical imaging system just becomes crucial.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of optical imaging system for electronic hysteroscope of small-bore is provided, this optical imaging system is applicable to 1/4th inch CCDs, the hard portion external diameter of electronic hysteroscope is less than avoid the limit of the 8mm anaesthetized, is suitable for merely as the early diagnosis of uterine cancers; System does not adopt non-spherical lens, and all adopts standard sphere refractor, to be convenient to processing and to debug; The field angle of system reaches 90 °, and coordinating can 270 ° of bending front end, can realize the diagnosis of non-blind area.
The technical scheme adopted is:
The optical imaging system for electronic hysteroscope matched with 1/4 inch CCD, comprises five coaxial spherical refractors and a diaphragm, and five described coaxial spherical refractors are arranged in order from the object side to the image side, wherein:
First lens are concavees lens, and focal power is negative value, light is dispersed through these sheet lens, and this lens face are all convex in object space to the face type of object space and image space.
Second lens is convex lens, focal power be on the occasion of, light is assembled through these sheet lens, and this lens face is convex in object space to the face type of object space, the face type towards image space is convex in image space.
3rd lens are concavees lens, and focal power is negative value, and light is dispersed through these sheet lens, and this lens face is convex in image space to the face type of object space, the face type towards image space is convex in object space.
4th lens are convex lens, focal power be on the occasion of, light is assembled through these sheet lens, and this lens face is all convex in image space to the face type of object space and image space.
5th lens are convex lens, focal power be on the occasion of, light is assembled through these sheet lens, and this lens face is all convex in object space to the face type of object space and image space.
Described diaphragm is placed between second lens and the 3rd lens.
Above-mentioned first lens, second lens, the 3rd lens, the 4th lens, the 5th lens all adopt standard sphere refractor, to be convenient to processing and to debug.Every sheet refractor has two minute surfaces, five lens and a diaphragm have 11 minute surfaces, and the radius-of-curvature of 1-11 minute surface, minute surface radius, minute surface spacing, lens glass material and structural parameters are as shown in table 1, the wherein positive and negative regulation meeting applied optics or optical system design software zemax of the radius-of-curvature of minute surface, namely face type convex to object space be on the occasion of, convex to image space be negative value.
Table 1
| Minute surface number | Radius-of-curvature (mm) | This minute surface is to the distance (mm) of next minute surface | Minute surface radius (mm) | Glass material |
| 1 | 3.79 | 0.60 | 2.27 | D-AAK70 |
| 2 | 1.48 | 1.33 | 1.63 | ? |
| 3 | 2.32 | 1.18 | 1.44 | BAF5 |
| 4 | -3.81 | 0.38 | 1.44 | ? |
| 5 | ∞ | 0.31 | 0.33 | ? |
| 6 | -4.53 | 0.60 | 1.44 | ZF51 |
| 7 | 4.30 | 0.16 | 0.96 | ? |
| 8 | -520.08 | 0.86 | 1.15 | H-ZAAF50B |
| 9 | -2.61 | 0.01 | 1.44 | ? |
| 10 | 3.58 | 0.65 | 1.86 | H-AAK54 |
| 11 | 6.33 | 2.58 | 1.86 | ? |
/ 4th inch CCD target surface sizes are 3.2mm × 2.4mm, target surface diagonal line is 4mm, the radius of electronic hysteroscope spherical optics imaging system imaging of the present invention in image planes is 2mm, diameter 4mm, when 1/4th inch CCD imageing sensors are placed in the image planes of optical imaging system, external 1/4th inch CCDs of imaging.
It is 2.27mm that the maximum outside diameter of optical imaging system for electronic hysteroscope of the present invention is less than maximum minute surface radius in 4.6mm(table 1, and maximum gauge is 4.54mm), be less than the 8mm external diameter of exempting to anaesthetize.
The spatial resolution of 1/4th inch CCDs is 78 lp/mm.Spatial resolution corresponding when optical-modulation transfer function MTF is 0.2 is the ultimate resolution of optical system, optical imaging system for electronic hysteroscope of the present invention is under 90 ° of field angle, ultimate resolution when MTF reaches 0.2 is 90lp/mm, exceed the resolution of 1/4th inch CCD 78 lp/mm, meet the requirement of 1/4th inch CCD spatial resolutions.
The maximum field of view angle of optical imaging system for electronic hysteroscope of the present invention is 90 °, coordinates hysteroscope can 270 ° of bending front ends, can realize the diagnosis of non-blind area.
The size of optical imaging system for electronic hysteroscope of the present invention, spatial resolution, field angle all meet the requirement of 1/4th inch CCDs, and coordinate 270 ° of bending front ends, can realize uterine cavity non-blind area, high-resolution imaging.
Accompanying drawing explanation
Fig. 1 is the structural representation of optical imaging system for electronic hysteroscope of the present invention.
Fig. 2 is the index path of optical imaging system for electronic hysteroscope of the present invention.
Fig. 3 is the MTF curve of optical imaging system for electronic hysteroscope of the present invention.
Embodiment
The optical imaging system for electronic hysteroscope matched with 1/4 inch CCD, illustrates embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, optical imaging system for electronic hysteroscope comprises A1, A2, A3, A4, A5 five coaxial spherical refractors and diaphragm 5, they from the object side to the image side followed order be:
First lens A1 is concavees lens, and focal power is negative value, and light is dispersed through first lens A1, and the minute surface 1 of first lens A1 towards object space and the minute surface 2 towards image space are all convex in object space.
Second lens A2 is convex lens, focal power be on the occasion of, light is assembled through second lens A2, and second lens A2 is convex in object space towards the minute surface 3 of object space, the minute surface 4 towards image space is convex in image space.
3rd lens A3 is concavees lens, and focal power is negative value, and light is dispersed through the 3rd lens A3, and the 3rd lens A3 is convex in image space towards the minute surface 6 of object space, the minute surface 7 towards image space is convex in object space.
4th lens A4 is convex lens, focal power be on the occasion of, light is assembled through the 4th lens A4, and the minute surface 8 of the 4th lens A4 towards object space and the minute surface 9 towards image space are all convex in image space.
5th lens A5 is convex lens, focal power be on the occasion of, light is assembled through the 5th lens A5, and the minute surface 10 of the 5th lens A5 towards object space and the minute surface 11 towards image space are all convex in object space.
The structural parameters such as radius-of-curvature, minute surface radius, minute surface spacing, lens glass material of 11 minute surfaces are as shown in table 2, the wherein positive and negative regulation meeting applied optics or optical system design software zemax of the radius-of-curvature of minute surface, namely face type convex to object space be on the occasion of, convex to image space be negative value.
Table 2
| Minute surface number | Radius-of-curvature (mm) | This minute surface is to the distance (mm) of next minute surface | Minute surface radius (mm) | Glass material |
| 1 | 3.79 | 0.60 | 2.27 | D-AAK70 |
| 2 | 1.48 | 1.33 | 1.63 | ? |
| 3 | 2.32 | 1.18 | 1.44 | BAF5 |
| 4 | -3.81 | 0.38 | 1.44 | ? |
| 5 | ∞ | 0.31 | 0.33 | ? |
| 6 | -4.53 | 0.60 | 1.44 | ZF51 |
| 7 | 4.30 | 0.16 | 0.96 | ? |
| 8 | -520.08 | 0.86 | 1.15 | H-ZAAF50B |
| 9 | -2.61 | 0.01 | 1.44 | ? |
| 10 | 3.58 | 0.65 | 1.86 | H-AAK54 |
| 11 | 6.33 | 2.58 | 1.86 | ? |
Optical imaging system for electronic hysteroscope of the present invention does not adopt non-spherical lens, and all adopts standard sphere refractor, to be convenient to processing and to debug.
/ 4th inch CCD target surface sizes are 3.2mm × 2.4mm, and target surface diagonal line is 4mm.As shown in Figure 2, the radius of electronic hysteroscope spherical optics imaging system imaging of the present invention in image planes 12 is 2mm, diameter 4mm, when in the image planes 12 that 1/4th inch CCD imageing sensors are placed in optical imaging system, external 1/4th inch CCDs of imaging.
The spatial resolution of 1/4th inch CCDs is 78 lp/mm.Spatial resolution corresponding when optical-modulation transfer function MTF is 0.2 is the ultimate resolution of optical system.As shown in Figure 3, the present invention is under 90 ° of field angle, and ultimate resolution when system MTF reaches 0.2 is 90lp/mm, has exceeded the resolution of 1/4th inch CCD 78 lp/mm, meets the requirement of 1/4th inch CCD spatial resolutions.
The maximum field of view angle of optical imaging system for electronic hysteroscope of the present invention is 90 °, coordinates hysteroscope can 270 ° of bending front ends, can realize the diagnosis of non-blind area.
The size of optical imaging system for electronic hysteroscope of the present invention, spatial resolution, field angle all meet the requirement of 1/4th inch CCDs, and coordinate 270 ° of bending front ends, can realize uterine cavity non-blind area, high-resolution imaging.
Claims (2)
1. the optical imaging system for electronic hysteroscope matched with 1/4 inch CCD, comprise five coaxial spherical refractors and a diaphragm, it is characterized in that five described coaxial spherical refractors and a diaphragm are arranged in order from the object side to the image side, wherein:
First lens A1 is concavees lens, and focal power is negative value, and light is dispersed through first lens A1, and the mirror type (1) of first lens A1 towards object space and the mirror type (2) towards image space all convex in object space;
Second lens A2 is convex lens, focal power be on the occasion of, light is assembled through second lens A2, and second lens A2 is convex in object space towards the mirror type (3) of object space, the mirror type (4) towards image space is convex in image space;
Be located at the diaphragm (5) between second lens A2 and the 3rd lens A3;
3rd lens A3 is concavees lens, and focal power is negative value, and light is dispersed through the 3rd lens A3, and the 3rd lens A3 is convex in image space towards the mirror type (6) of object space, and the mirror type (7) towards image space is convex in object space;
4th lens A4 is convex lens, focal power be on the occasion of, light is assembled through the 4th lens A4, and the mirror type (8) of the 4th lens A4 towards object space and the mirror type (9) towards image space all convex in image space;
5th lens A5 is convex lens, focal power be on the occasion of, light is assembled through the 5th lens A5, and the mirror type (10) of the 5th lens A5 towards object space and the mirror type (11) towards image space all convex in object space.
2. a kind of optical imaging system for electronic hysteroscope matched with 1/4 inch CCD according to claim 1, it is characterized in that five described coaxial spherical refractors all adopt standard sphere refractor, the wherein positive and negative regulation meeting applied optics or optical system design software zemax of the radius-of-curvature of minute surface, namely face type convex to object space be on the occasion of, convex to image space be negative value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410571809.XA CN104317037A (en) | 2014-10-24 | 2014-10-24 | Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410571809.XA CN104317037A (en) | 2014-10-24 | 2014-10-24 | Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104317037A true CN104317037A (en) | 2015-01-28 |
Family
ID=52372285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410571809.XA Pending CN104317037A (en) | 2014-10-24 | 2014-10-24 | Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104317037A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927955A (en) * | 2019-11-14 | 2020-03-27 | 精微视达医疗科技（武汉）有限公司 | Coupling objective lens for confocal micro-endoscope |
| CN117297533A (en) * | 2023-11-29 | 2023-12-29 | 桐庐优视医疗器械有限公司 | Uterine cavity endoscope free of dilatation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076665A (en) * | 2011-10-26 | 2013-05-01 | 鸿富锦精密工业（深圳）有限公司 | Lens for capturing image |
| US20130137930A1 (en) * | 2011-11-28 | 2013-05-30 | Samsung Electronics Co., Ltd | Objective lens for endoscopic device, actuator for focusing, and endoscopic system |
| CN103576285A (en) * | 2012-07-27 | 2014-02-12 | 大立光电股份有限公司 | Optical image capturing lens assembly |
| CN103926678A (en) * | 2014-04-17 | 2014-07-16 | 北京首量科技有限公司 | Wide-angle lens and optical fiber sight glass system with same |
-
2014
- 2014-10-24 CN CN201410571809.XA patent/CN104317037A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076665A (en) * | 2011-10-26 | 2013-05-01 | 鸿富锦精密工业（深圳）有限公司 | Lens for capturing image |
| US20130137930A1 (en) * | 2011-11-28 | 2013-05-30 | Samsung Electronics Co., Ltd | Objective lens for endoscopic device, actuator for focusing, and endoscopic system |
| CN103576285A (en) * | 2012-07-27 | 2014-02-12 | 大立光电股份有限公司 | Optical image capturing lens assembly |
| CN103926678A (en) * | 2014-04-17 | 2014-07-16 | 北京首量科技有限公司 | Wide-angle lens and optical fiber sight glass system with same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927955A (en) * | 2019-11-14 | 2020-03-27 | 精微视达医疗科技（武汉）有限公司 | Coupling objective lens for confocal micro-endoscope |
| CN110927955B (en) * | 2019-11-14 | 2021-08-03 | 精微视达医疗科技（武汉）有限公司 | Coupling objective lens for confocal micro-endoscope |
| CN117297533A (en) * | 2023-11-29 | 2023-12-29 | 桐庐优视医疗器械有限公司 | Uterine cavity endoscope free of dilatation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8535218B2 (en) | Capsule endoscope | |
| US7746566B2 (en) | Observation optical system | |
| US8123680B2 (en) | Endoscope | |
| JPWO2006004083A1 (en) | Endoscope attachment and endoscope | |
| CN106455915B (en) | Endoscope | |
| CN103969789A (en) | Optical system for ultrahigh image quality rigid tube endoscope | |
| CN104317037A (en) | Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD | |
| CN1665439A (en) | Optical device for endoscope | |
| CN214278536U (en) | Wide-angle miniature endoscope optical imaging system | |
| CN203226800U (en) | Gynecology endoscope embedded digital imaging system | |
| CN104224092A (en) | Tip end part structure for endoscope | |
| US20080247039A1 (en) | Observation optical system | |
| WO2017012192A1 (en) | Hard tube mirror | |
| CN112790721B (en) | High-resolution lateral imaging miniature endoscopic microscope objective group and probe | |
| CN114740603A (en) | Aspheric optical system for abdominal cavity endoscope | |
| CN104914560B (en) | A kind of big depth of field endoscope lens in big visual field | |
| CN108957706B (en) | 4K laparoscope imaging objective lens | |
| CN207768341U (en) | A kind of separable fibrescope | |
| CN208621833U (en) | A kind of endoscopic system | |
| US11525998B2 (en) | Endoscope objective lens unit and endoscope | |
| CN202843575U (en) | Three-dimensional peritoneoscope optical system | |
| CN104305951B (en) | Thin footpath Radix Rumicis medical electronic endoscope optical imaging system | |
| TWI474040B (en) | Lens system of capsule endoscope with dual-view | |
| WO2019127245A1 (en) | Endoscope system and integrated design method for endoscope camera optical system | |
| CN111399195A (en) | Super wide-angle lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150128 |