CN104434006A - Double-channel endoscope - Google Patents
Double-channel endoscope Download PDFInfo
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- CN104434006A CN104434006A CN201410826555.1A CN201410826555A CN104434006A CN 104434006 A CN104434006 A CN 104434006A CN 201410826555 A CN201410826555 A CN 201410826555A CN 104434006 A CN104434006 A CN 104434006A
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- lens
- prism
- endoscope
- double channel
- channel endoscope
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- 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
- A61B1/055—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 having rod-lens arrangements
-
- 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
- A61B1/00131—Accessories for endoscopes
-
- 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
- A61B1/00163—Optical arrangements
- A61B1/00195—Optical arrangements with eyepieces
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Endoscopes (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The invention discloses the design of a double-channel endoscope. The steering function and the imaging function of the double-channel endoscope are achieved through an eye lens, a rod-like lens, a prism, an optical lens and the like. By means of the special optical structural design, the geometric space is fully utilized, the size of a tube of the double-channel endoscope is minimized, and the size of the steering part and the imaging part at the rear end of the tube is minimized. By means of the design of coinciding of a lens focus point and an image plane in an endoscope system, the installation requirement of a light path system is lowered, the binocular interval, the imaging distance and magnification times can be adjusted conveniently, and the universality and the flexibility of the design are improved.
Description
Technical field
The present invention relates to a kind of Double channel endoscope, belong to medical diagnosis technical field of imaging.
Background technology
Endoscope is the conventional means of in-vivo diagnostic and treatment all the time, traditional single channel (monocular) endoscope is because obtaining the depth information of image by three-dimensional imaging, make troubles to the Accurate Diagnosis of doctor, also limit the development of surgical robot system.The two-dimentional endoscopic images that two width can be met certain space geometrical relationship by Double channel endoscope simultaneously exports, both can directly by binocular vision, or also can by later image process, for user provides the three-dimensional image with range information.The imaging mode of this informative, not only gives doctor's third dimension intuitively, and alleviates the working strength of user, improve diagnosis and detection precision, has also promoted the development of micro-wound operation robot technology simultaneously.
Double channel endoscope is the core cell of composition stereo endoscope, and the dimension volume of Double channel endoscope also directly affects the size of whole stereo endoscope.Reduce Double channel endoscope volume, especially the size of front end light path, be conducive to technique and apply to, in all kinds of Minimally Invasive Surgery endoscopic instrument, as peritoneoscope, laryngoscope and cystoscope etc., all need long and thin mirror pipe and undersized rear end mirror body.The existing patent about stereo endoscope has related to Double channel endoscope part in terms of content, such as: in patent " stereoscopic imaging apparatus based on monochromatic light road endoscope, Amici prism and two-way video camera " (CN 203458365 U), by adding Amici prism in existing single channel endoscope, realize twin-channel endoscopic images collection, be passed to 3D processing unit, form 3D rendering.But, the Double channel endoscope size be simply combined is subject to the restriction of original endoscope structure size, and after by image prism vergence, during for making Nonlinear magnify to certain size and being gathered by finished product ccd video camera, usually need major diameter lens and longer light path to realize amplifying, be difficult to meet clinical endoscopy equipment requirements.The stereo endoscope imaging system based on binocular endoscope is described in patent " stereo endoscope " (CN 104219989 A) and patent " binocular endoscope operation visual system " (CN 101518438).But all the technical essentials such as binocular endoscope size and the optical design how forming the little Double channel endoscope system of volume are not described.Patent " a kind of stereoscopic endoscope system " (CN103654698 A) describes a kind of stereoscopic endoscope system based on object lens, tilting mirror, eyepiece, adapter and CCD, light path design belongs to endoscopic imaging universal design, does not consider that the actual size demand of binocular endoscope designs.Patent " a kind of new-type stereo endoscope " (CN 104188617 A) describes and by the image transmission of two groups of light paths on the target surface of an imageing sensor, thus can reduce the overall volume of stereo endoscope by colour splitting prism.But the Double channel endoscope of this type, only can coordinate special CCD to use, this binocular endoscope cannot be extended to other field, as the binocular endoscope directly observed by human eye system; And this Patent design is usually longer to CCD sensitive face distance from last group tilting mirror end.Therefore, design the universal Double channel endoscope of a kind of small size, in stereo endoscope field, there is huge technical meaning.
Summary of the invention
The invention discloses the design of a kind of novel Double channel endoscope, by design optics parameter and position, the diameter of inner pipe entered in body not only can be made greatly to reduce, the length of outer body and diameter can also be made to shorten as much as possible.Meanwhile, the installation requirement of system to eyeglass is low, and can realize the function of the adjustment of outer body dual pathways spacing, Focussing and amplification adjustment easily, adds it and uses autgmentability and versatility.
Technical solution of the present invention is such, and in the Double channel endoscope that the present invention announces, wherein a road light path design as shown in Figure 1, is made up of eyepiece 1, rod-like mirror 2, little corner cube prism 3, short focus lens 4, large corner cube prism 5 and focal length lens 6.The two-way light path design of Double channel endoscope is symmetrical.
As preferably, little corner cube prism right-angle side length is generally equal to bar-shaped quiet diameter length; Short focus lens diameter is between little corner cube prism right-angle side length and large corner cube prism right-angle side length, and focal length is 3 ~ 10mm; Large corner cube prism right-angle side is generally 1 ~ 26mm; Focal length lens diameter is generally 12 ~ 26mm, and focal length is 10 ~ 50mm, forms optical amplifier effect with short focus lens.
Operation principle of the present invention is, object AB will be by imaging near last rod-like mirror exit facet after eyepiece and rod-like mirror; For the mirror pipe diameter realizing entering in body is as far as possible little, by close as much as possible for binocular endoscope two-way light path, light 90 degree produces by the little corner cube prism 3 suitable with rod-like mirror diameter by diameter; Short focus lens 4 one aspect can be about to the light collection dispersed, and makes it smoothly by large right angle lens 5, and forming optical imagery with focal length lens 6 amplifies relation on the other hand.In the present invention, being placed in two prisms by lens 4, is to make the design make full use of light path in corner cube prism, realizing the purpose of design that mechanical dimension is minimum.The focal plane of lens 4 is placed on object AB by the image planes after rod-like mirror after eyepiece, then the picture after scioptics 4 appears in infinite point, and namely emergent ray is in parastate; Parallel hot spot reflexes on focal length lens 6 by large corner cube prism 5, and can obtain the picture A ' B ' of object AB through turning to and amplify at the focal plane place of lens 6, image magnification is the focal distance ratio of lens 6 and lens 4.
In Double channel endoscope of the present invention, the effect of prism structure is the 90 degree of upsets realizing light, but is not limited to 90 degree, and can be the angle needed arbitrarily, the optical texture of any equivalent effect or element, should belong within scope of patent protection of the present invention.
Advantage of the present invention and good effect are:
Double channel endoscope of the present invention is that monnolithic case miniaturized structure creates possibility, lens are placed on two to turn between corner cube prism the geometric space of knuckle section optical texture is fully used, light is just completing the one-level amplification process of optical imagery in prism transfer process.
The matching requirements of optical unit in the present invention to camera lens are low, only need to ensure that lens 4 are lens 4 focal length with the distance of rod-like mirror outgoing focal plane in camera lens assembling, other size distances can carry out free adjustment according to actual needs, also can realize the smooth imaging of whole Double channel endoscope.
Double channel endoscope versatility of the present invention is good, for the photosurface size of different application and CCD, by selecting the focal distance ratio of lens 4 and lens 6, can realize the adjustment of amplification and image space.
Double channel endoscope two-way exit image spacing of the present invention easily adjusts, because light is in directional light state at lens 4 to lens 6 transmitting procedures, the distance between lens 4 and large corner cube prism 5 can be adjusted arbitrarily, the spacing of two passage output images can be realized.The adjustable range of spacing is large, therefore can meet different application, as directly observed by human eye and receiving image by different size ccd sensor.
Accompanying drawing explanation
Fig. 1 is the light path design on a Double channel endoscope wherein road.
Fig. 2 is a kind of based on stereo endoscope design diagram of the present invention.
Detailed description of the invention
Embodiment one:
As shown in Figure 2: based on this patent content, can add that in binocular endoscope rear end imaging CCD can realize a kind of 3D endoscope structure.If single channel mirror pipe 7 diameter is 5mm, add the lens of corner cube prism, the short focus lens of diameter 6mm focal length 6.5mm, the corner cube prism of right-angle side 12.5mm and the diameter 25.4mm focal length 25mm that right-angle side is 5mm at single channel mirror pipe end successively, form optical inversion and amplification module 8; Through turning to amplification module after image be imaged on the photosurface of two-way CCD respectively, two-way CCD is arranged in space 9 side by side; 10 is CCD service cable, data cable and light conduits.
By the design using two corner cube prisms and be placed on by lens between two prisms, eliminate the dimensional requirement of single channel mirror pipe diameter to back lens and other optics, take full advantage of space, also take full advantage of the optical distance in light path steering procedure, shorten image shift and the actual geometric distance required for amplification greatly; Short focus lens focus is dropped in the picture plane of mirror pipe 7 exit end, picture is made to become a collimated light beam through the light of these lens, can under guarantee image quality be unaffected, realize the convenient of the spacing of the dual pathways by regulating the distance between short focus lens and large prism to regulate, realize the adjustment of image magnification and the adjustment of imaging focal length by the focal distance ratio adjusting two lens, make Double channel endoscope of the present invention be widely used in multiple application.
Claims (6)
1. a Double channel endoscope, it is characterized in that: imaging object light realizes turning to of light path and amplifies through first prism, first lens, second prism, second lens, to realize the imaging function of Double channel endoscope successively after being spread out of by rod-like mirror.
2. a kind of Double channel endoscope according to claim 1, is characterized in that first lens is between first prism and second prism, to make full use of space and light path, shortens integrally-built geometric distance.
3. a kind of Double channel endoscope according to claim 1, is characterized in that first lens focus is positioned at the picture plane place of rod-like mirror exit end, to make light ray parallel after lens.
4. a kind of Double channel endoscope according to claim 1, is characterized in that first prism right angle length of side equals rod-like mirror diameter length; First lens diameter is between first prism right angle length of side and second prism right angle length of side, and focal length is 3 ~ 10mm; Second prism right angle length of side is 1 ~ 26mm; Second lens diameter is 12 ~ 26mm, and focal length is 10 ~ 50mm.
5. a kind of Double channel endoscope according to claim 1, is characterized in that the effect of prism structure is the 90 degree of upsets realizing light, but is not limited to 90 degree, can be the angle needed arbitrarily,
6. a kind of Double channel endoscope according to claim 1, is characterized in that all lens materials are made up of the transparent material such as glass, plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826555.1A CN104434006A (en) | 2014-12-26 | 2014-12-26 | Double-channel endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826555.1A CN104434006A (en) | 2014-12-26 | 2014-12-26 | Double-channel endoscope |
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| Publication Number | Publication Date |
|---|---|
| CN104434006A true CN104434006A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410826555.1A Pending CN104434006A (en) | 2014-12-26 | 2014-12-26 | Double-channel endoscope |
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Cited By (2)
| 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 |
| CN116473491A (en) * | 2023-04-21 | 2023-07-25 | 极限人工智能有限公司 | 3D electronic endoscope lens and 3D electronic endoscope |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222482A (en) * | 1991-04-15 | 1993-06-29 | Clark Kenneth M | Binocular endoscope with depth perception and fixed focal plane |
| JPH06160731A (en) * | 1992-11-18 | 1994-06-07 | Olympus Optical Co Ltd | Stereoscopic endoscope device |
| US5577991A (en) * | 1992-06-09 | 1996-11-26 | Olympus Optical Co., Ltd. | Three-dimensional vision endoscope with position adjustment means for imaging device and visual field mask |
| US5601549A (en) * | 1994-11-17 | 1997-02-11 | Machida Endoscope Co., Ltd. | Medical observing instrument |
| US5720706A (en) * | 1993-02-17 | 1998-02-24 | Olympus Optical Co., Ltd. | Stereoscopic endoscope |
| US5976071A (en) * | 1994-11-29 | 1999-11-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Stereoscopic endoscope |
| US20020082476A1 (en) * | 1994-03-17 | 2002-06-27 | Olympus Optical Co. | Stereoendoscope wherein images having passed through plural incident pupils are transmitted by common relay optical systems |
| CN101518438A (en) * | 2009-03-27 | 2009-09-02 | 南开大学 | Binocular endoscope operation visual system |
| CN102597871A (en) * | 2009-10-23 | 2012-07-18 | 奥林巴斯医疗株式会社 | Objective optical system for three-dimensional image capturing and endoscope |
-
2014
- 2014-12-26 CN CN201410826555.1A patent/CN104434006A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222482A (en) * | 1991-04-15 | 1993-06-29 | Clark Kenneth M | Binocular endoscope with depth perception and fixed focal plane |
| US5577991A (en) * | 1992-06-09 | 1996-11-26 | Olympus Optical Co., Ltd. | Three-dimensional vision endoscope with position adjustment means for imaging device and visual field mask |
| JPH06160731A (en) * | 1992-11-18 | 1994-06-07 | Olympus Optical Co Ltd | Stereoscopic endoscope device |
| US5720706A (en) * | 1993-02-17 | 1998-02-24 | Olympus Optical Co., Ltd. | Stereoscopic endoscope |
| US20020082476A1 (en) * | 1994-03-17 | 2002-06-27 | Olympus Optical Co. | Stereoendoscope wherein images having passed through plural incident pupils are transmitted by common relay optical systems |
| US5601549A (en) * | 1994-11-17 | 1997-02-11 | Machida Endoscope Co., Ltd. | Medical observing instrument |
| US5976071A (en) * | 1994-11-29 | 1999-11-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Stereoscopic endoscope |
| CN101518438A (en) * | 2009-03-27 | 2009-09-02 | 南开大学 | Binocular endoscope operation visual system |
| CN102597871A (en) * | 2009-10-23 | 2012-07-18 | 奥林巴斯医疗株式会社 | Objective optical system for three-dimensional image capturing and endoscope |
Cited By (2)
| 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 |
| CN116473491A (en) * | 2023-04-21 | 2023-07-25 | 极限人工智能有限公司 | 3D electronic endoscope lens and 3D electronic endoscope |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |