CN107797267A - The flake endoscope lens of ultra-wide angle - Google Patents
The flake endoscope lens of ultra-wide angle Download PDFInfo
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- CN107797267A CN107797267A CN201711193978.4A CN201711193978A CN107797267A CN 107797267 A CN107797267 A CN 107797267A CN 201711193978 A CN201711193978 A CN 201711193978A CN 107797267 A CN107797267 A CN 107797267A
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- lens
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- flake
- endoscope
- image planes
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Endoscopes (AREA)
Abstract
The application is related to endoscope, more particularly to the flake endoscope lens of ultra-wide angle.It includes lens barrel, and the lens barrel interior edge optical axis includes successively from object plane to image planes：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens and the 9th lens；Ccd sensor chip is additionally provided with rear side of the 9th lens in the lens barrel, optical filter and the protective glass eyeglass between the optical filter and the ccd sensor are additionally provided between the 9th lens and the ccd sensor chip.By the way that the first lens to the 9th lens are reasonably arranged in pairs or groups in lens barrel, the characteristics of using each eyeglass self structure, so that the angle of visual field of camera lens reaches 230 °, imaging on the CCD or CMOS of image planes, it is observed that larger range of picture, carry out transformation angle in narrow and small internal organ space and without frequently moving lens and carry out observation shooting, improve operating efficiency.
Description
【Technical field】
The application is related to endoscope, more particularly to the flake endoscope lens of ultra-wide angle.
【Background technology】
Endoscope is a kind of conventional medicine equipment of current medical field, by bendable portion, light source and camera lens composition.Make
Used time, endoscope is imported into the diseased region that need to be checked, rear end connection photoelectric sensor CCD or CMOS, by diseased region
Image information by the imaging of camera lens, imaging on the photosensor, intuitively differentiate for doctor diseased region change and
Directly accurately performed the operation under visibility status.Therefore, the quality of lens imaging quality just have impact on the use effect of endoscope
Fruit.And for camera lens, the mainly factor of the angle of visual field, resolution ratio and illumination, with fish-eye development and high pixel core
The appearance of piece, the fish eye lens of ultra wide-angle is also applied to above endoscope, is advantageous to improve operating efficiency.
【The content of the invention】
To solve the problems, such as that endoscope can make angle small in the prior art, this application provides the flake endoscope of ultra-wide angle
Camera lens.
The application is achieved through the following technical solutions：
The flake endoscope lens of ultra-wide angle, it includes lens barrel, and the lens barrel interior edge optical axis wraps successively from object plane to image planes
Include：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, with
And the 9th lens；In the lens barrel ccd sensor chip, the 9th lens and institute are additionally provided with rear side of the 9th lens
State and be additionally provided with optical filter and the protection glass between the optical filter and the ccd sensor between ccd sensor chip
Glass eyeglass；
The first lens object plane side is convex surface, and image planes side is convex surface；
The second lens object plane side is plane, and image planes side is convex surface；
The 3rd lens object plane side is concave surface, and image planes side is convex surface；
The 4th lens object plane side is convex surface, and image planes side is concave surface；
The 5th lens object plane side is convex surface, and image planes side is concave surface；
The 6th lens object plane side is convex surface, and image planes side is concave surface；
The 7th lens object plane side is concave surface, and image planes side is convex surface；
The 8th lens object plane side is convex surface, and image planes side is concave surface；
The 9th lens object plane side is convex surface, and image planes side is plane.
The flake endoscope lens of ultra-wide angle as described above, also meet following condition：
(1)1.70<Nd1<1.90；20<Vd1<40；
(2)1.70<Nd2<1.90；35<Vd2<50；
(3)1.70<Nd3<1.90；35<Vd3≤50；
(4)1.80<Nd4<1.95；20<Vd4<35；
(5)1.50<Nd5<1.75；20<Vd5<40；
(6)1.65<Nd6<1.75；30<Vd6<65；
(7)1.80<Nd7<1.95；20<Vd7<35；
(8)1.70<Nd8<1.85；35<Vd8<55；
(9)1.70<Nd9<1.85；30<Vd9<55；
Wherein, Nd1 is the refractive index of the first lens, and Vd1 is the abbe number of the first lens；Nd2 is the folding of the second lens
Rate is penetrated, Vd2 is the abbe number of the second lens；Nd3 is the refractive index of the 3rd lens, and Vd3 is the abbe number of the 3rd lens；
Nd4 is the refractive index of the 4th lens, and Vd4 is the abbe number of the 4th lens；Nd5 is the refractive index of the 5th lens, and Vd5 is the 5th
The abbe number of lens；Nd6 is the refractive index of the 6th lens, and Vd6 is the abbe number of the 6th lens；Nd7 is the 7th lens
Refractive index, Vd7 are the abbe number of the 7th lens；Nd8 is the refractive index of the 8th lens, and Vd8 is the abbe number of the 8th lens；
Nd9 is the refractive index of the 9th lens, and Vd9 is the abbe number of the 9th lens.
The flake endoscope lens of ultra-wide angle as described above, first power of lens be negative, its focal length f1 is-
5.8mm。
The flake endoscope lens of ultra-wide angle as described above, second power of lens be negative, its focal length f2 is-
3.6mm。
The flake endoscope lens of ultra-wide angle as described above, it be negative to state the 3rd power of lens, its focal length f3 is-
3.3mm。
The flake endoscope lens of ultra-wide angle as described above, the 4th power of lens is just, its focal length f4 is
6mm。
The flake endoscope lens of ultra-wide angle as described above, the 5th power of lens is just, its focal length f5 is
5.6mm。
The flake endoscope lens of ultra-wide angle as described above, the 6th power of lens is just, its focal length f6 is
4.2mm。
The flake endoscope lens of ultra-wide angle as described above, the 7th power of lens be negative, its focal length f7 is-
2.6mm。
The flake endoscope lens of ultra-wide angle as described above, the 8th power of lens is just, its focal length f7 is
3.7mm。
Compared with prior art, the application has the following advantages：
1st, this application provides the flake endoscope lens of ultra-wide angle, by by the first lens to the 9th lens in lens barrel
Reasonably arranged in pairs or groups, the characteristics of using each eyeglass self structure so that the angle of visual field of camera lens reaches 230 °, in image planes
Imaging on CCD or CMOS, it is observed that larger range of picture, in narrow and small internal organ space and without frequently moving
Camera lens carrys out transformation angle and carries out observation shooting, improves operating efficiency.
【Brief description of the drawings】
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation for the flake endoscope optical system that the application has ultra-wide angle.
Fig. 2 is the imaging schematic diagram of the application；
Fig. 3 is Fig. 2 partial enlarged drawing；
Fig. 4 is the MTF transfer curve figures of the application；
Fig. 5 is the Difference Control figure of the application；
Fig. 6 is the spot diameter figure of the application.
【Embodiment】
In order that technical problem, technical scheme and beneficial effect that the application solves are more clearly understood, below in conjunction with
Drawings and Examples, the application is further elaborated.It should be appreciated that specific embodiment described herein is only used
To explain the application, it is not used to limit the application.
The application is achieved through the following technical solutions：
As shown in Figures 1 to 6, the flake endoscope lens of ultra-wide angle, include successively from object plane to image planes along optical axis：First
Lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7, the 8th lens 8,
And the 9th lens 9；Characterized in that,
The object plane side of first lens 1 is convex surface, and image planes side is convex surface；
The object plane side of second lens 2 is plane, and image planes side is convex surface；
The object plane side of 3rd lens 3 is concave surface, and image planes side is convex surface；
The object plane side of 4th lens 4 is convex surface, and image planes side is concave surface；
The object plane side of 5th lens 5 is convex surface, and image planes side is concave surface；
The object plane side of 6th lens 6 is convex surface, and image planes side is concave surface；
The object plane side of 7th lens 7 is concave surface, and image planes side is convex surface；
The object plane side of 8th lens 8 is convex surface, and image planes side is concave surface；
The object plane side of 9th lens 9 is convex surface, and image planes side is plane.
By the way that the lens 9 of the first lens 1 to the 9th are reasonably arranged in pairs or groups, the characteristics of using each eyeglass self structure,
So that the angle of visual field of camera lens reaches 230 °, the imaging on the CCD or CMOS of image planes, it is observed that larger range of picture,
Carry out transformation angle in narrow and small internal organ space and without frequently moving lens and carry out observation shooting, improve operating efficiency.
Further, the flake endoscope lens of described ultra-wide angle also meet following condition：
(1)1.70<Nd1<1.90；20<Vd1<40；
(2)1.70<Nd2<1.90；35<Vd2<50；
(3)1.70<Nd3<1.90；35<Vd3≤50；
(4)1.80<Nd4<1.95；20<Vd4<35；
(5)1.50<Nd5<1.75；20<Vd5<40；
(6)1.65<Nd6<1.75；30<Vd6<65；
(7)1.80<Nd7<1.95；20<Vd7<35；
(8)1.70<Nd8<1.85；35<Vd8<55；
(9)1.70<Nd9<1.85；30<Vd9<55；
Wherein, Nd1 is the refractive index of the first lens 1, and Vd1 is the abbe number of the first lens 1；Nd2 is the second lens 2
Refractive index, Vd2 are the abbe number of the second lens 2；Nd3 is the refractive index of the 3rd lens 3, and Vd3 is the dispersion system of the 3rd lens 3
Number；Nd4 is the refractive index of the 4th lens 4, and Vd4 is the abbe number of the 4th lens 4；Nd5 be the 5th lens 5 refractive index, Vd5
For the abbe number of the 5th lens 5；Nd6 is the refractive index of the 6th lens 6, and Vd6 is the abbe number of the 6th lens 6；Nd7 is
The refractive index of seven lens 7, Vd7 are the abbe number of the 7th lens 7；Nd8 is the refractive index of the 8th lens 8, and Vd8 is the 8th lens
8 abbe number；Nd9 is the refractive index of the 9th lens 9, and Vd9 is the abbe number of the 9th lens 9.Different refraction materials
Eyeglass abbe number it is also different, refractive index is higher, and abbe number is lower, using each eyeglass attribute difference rationally taken
After matching somebody with somebody, the dispersion range after light to image planes is smaller so that the imaging of endoscope lens becomes apparent from.
Further, the focal power of the first lens 1 is negative, its focal length -6mm<f1<- 4mm, its preferred focal length f1 for-
5.8mm.The refractive index Nd1 preferably 1.77 of first lens 1, abbe number Vd1 preferably 28, is advantageous to make optical system or mirror
Capitiform is into sharp image.
Yet further, the focal power of the second lens 2 is negative, its focal length -4mm<f2<- 3mm, its preferred focal length f2 for-
3.6mm.The refractive index Nd2 preferably 1.78 of second lens 2, abbe number Vd2 preferably 50, is advantageous to make optical system or mirror
Capitiform is into sharp image.
Also further, the focal power of the 3rd lens 3 is negative its focal length -4mm<f3<- 3mm, its preferred focal length f3 for-
3.3mm.The refractive index Nd3 preferably 1.78 of 3rd lens 3, abbe number Vd3 preferably 50, be advantageous to make optical system or mirror
Capitiform is into sharp image.
Specifically, the focal power of the 4th lens 4 is just its focal length 5mm<f4<7mm, its preferred focal length f4 are 6mm.Institute
The refractive index Nd4 preferably 1.90 of the 4th lens 4, abbe number Vd4 preferably 23 are stated, is advantageous to make optical system or camera lens be formed clearly
Clear image.
Specifically, the focal power of the 5th lens 5 is just its focal length 5mm<f5<7mm, its preferred focal length f5 are 5.6mm.
The refractive index Nd5 preferably 1.70 of 5th lens 5, abbe number Vd5 preferably 35, be advantageous to form optical system or camera lens
Sharp image.
Specifically, the focal power of the 6th lens 6 is just its focal length 4mm<f6<6mm, its preferred focal length f6 are 4.2mm.
The refractive index Nd6 preferably 1.72 of 6th lens 6, abbe number Vd6 preferably 55, be advantageous to form optical system or camera lens
Sharp image.
Specifically, the focal power of the 7th lens 7 is negative its focal length -3mm<f7<- 2mm, its preferred focal length f7 for-
2.6mm.The refractive index Nd7 preferably 1.90 of 7th lens 7, abbe number Vd7 preferably 23, be advantageous to make optical system or mirror
Capitiform is into sharp image.
More specifically, the image planes side of the 6th lens 6 and the object plane side bonding of the 7th lens 7 turn into compound lens, its
Focal length f67 is -6.3mm.Be advantageous to make optical system or camera lens form sharp image.
Specifically, the focal power of the 8th lens 8 is just its focal length 3mm<f8<5mm, its preferred focal length f8 are 3.7mm.
The refractive index Nd8 preferably 1.80 of 8th lens 8, abbe number Vd8 preferably 45, be advantageous to form optical system or camera lens
Sharp image.
Specifically, the focal power of the 9th lens 9 is just its focal length 4mm<f9<6mm, its preferred focal length f9 are 4.7mm.
The refractive index Nd9 preferably 1.72 of 9th lens 9, abbe number Vd9 preferably 48, be advantageous to form optical system or camera lens
Sharp image.
Again specifically, optical filter 11 and protective glass 12 are additionally provided with after the 9th lens 9, is advantageous to make optical system
Or camera lens forms sharp image.
Specifically, in the present embodiment, every basic parameter of this optical lens is as shown in the table：
In upper table, along optical axis 10 from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponding
For two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the 3rd lens 3；S7, S8 correspond to the two of the 4th lens 4
Individual surface；S9, S10 correspond to two surfaces of the 5th lens 5；STO is diaphragm position；It is saturating that S11, S12 correspond to the 6th
Two surfaces of mirror 6；S13, S14 correspond to two surfaces of the 7th lens 7；S15, S16 correspond to two tables of the 8th lens 8
Face；S17, S18 correspond to two surfaces of the 9th lens 9.
As can be seen that this optical system has good optical property from Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, light passes through
After the convergence of this optical system, the areas imaging very little on the CCD of image planes, each wave band is converged on single pixel point finally
Light collection is had no in face to rest of pixels point.
This application provides the flake endoscope lens of ultra-wide angle, by the way that the lens 9 of the first lens 1 to the 9th are carried out rationally
Collocation, the characteristics of using each eyeglass self structure so that the angle of visual field of camera lens reaches 230 °, in the CCD or CMOS of image planes
On imaging, it is observed that larger range of picture, turn in narrow and small internal organ space without frequently moving lens
Change visual angle and carry out observation shooting, improve operating efficiency.And overall dimensions are small, convenient use, using nine sheet glass lens groups
The structure of conjunction, high resolution, the imaging effect of 5,000,000 pixels can be reached, make the picture of shooting apparent, be advantageous to doctor more
Accurately judged.
It is to combine one or more embodiments that particular content provides as described above, does not assert the specific reality of the application
Apply and be confined to these explanations.It is all approximate with the present processes, structure etc., identical, or under the application concept thereof
Make some technologies to deduce, or replace the protection domain that should be all considered as the application.
Claims (10)
1. the flake endoscope lens of ultra-wide angle, it includes lens barrel, and the lens barrel interior edge optical axis includes successively from object plane to image planes：
First lens (1), the second lens (2), the 3rd lens (3), the 4th lens (4), the 5th lens (5), the 6th lens (6), the 7th
Lens (7), the 8th lens (8) and the 9th lens (9)；It is additionally provided with the lens barrel on rear side of the 9th lens (9)
Ccd sensor chip, optical filter (11) is additionally provided between the 9th lens (9) and the ccd sensor chip and is located at
Protective glass eyeglass (12) between the optical filter (11) and the ccd sensor；Characterized in that,
First lens (1) the object plane side is convex surface, and image planes side is convex surface；
Second lens (2) the object plane side is plane, and image planes side is convex surface；
3rd lens (3) the object plane side is concave surface, and image planes side is convex surface；
4th lens (4) the object plane side is convex surface, and image planes side is concave surface；
5th lens (5) the object plane side is convex surface, and image planes side is concave surface；
6th lens (6) the object plane side is convex surface, and image planes side is concave surface；
7th lens (7) the object plane side is concave surface, and image planes side is convex surface；
8th lens (8) the object plane side is convex surface, and image planes side is concave surface；
9th lens (9) the object plane side is convex surface, and image planes side is plane.
2. the flake endoscope lens of ultra-wide angle according to claim 1, it is characterised in that also meet following condition：
(1)1.70<Nd1<1.90；20<Vd1<40；
(2)1.70<Nd2<1.90；35<Vd2<50；
(3)1.70<Nd3<1.90；35<Vd3≤50；
(4)1.80<Nd4<1.95；20<Vd4<35；
(5)1.50<Nd5<1.75；20<Vd5<40；
(6)1.65<Nd6<1.75；30<Vd6<65；
(7)1.80<Nd7<1.95；20<Vd7<35；
(8)1.70<Nd8<1.85；35<Vd8<55；
(9)1.70<Nd9<1.85；30<Vd9<55；
Wherein, Nd1 is the refractive index of the first lens (1), and Vd1 is the abbe number of the first lens (1)；Nd2 is the second lens (2)
Refractive index, Vd2 be the second lens (2) abbe number；Nd3 is the refractive index of the 3rd lens (3), and Vd3 is the 3rd lens (3)
Abbe number；Nd4 is the refractive index of the 4th lens (4), and Vd4 is the abbe number of the 4th lens (4)；Nd5 is the 5th lens
(5) refractive index, Vd5 are the abbe number of the 5th lens (5)；Nd6 is the refractive index of the 6th lens (6), and Vd6 is the 6th lens
(6) abbe number；Nd7 is the refractive index of the 7th lens (7), and Vd7 is the abbe number of the 7th lens (7)；Nd8 is the 8th saturating
The refractive index of mirror (8), Vd8 are the abbe number of the 8th lens (8)；Nd9 is the refractive index of the 9th lens (9), and Vd9 is the 9th saturating
The abbe number of mirror (9).
3. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that first lens (1)
Focal power be negative, its focal length f1 is -5.8mm.
4. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that second lens (2)
Focal power be negative, its focal length f2 is -3.6mm.
5. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that the 3rd lens (3)
Focal power be negative, its focal length f3 is -3.3mm.
6. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that the 4th lens (4)
Focal power for just, its focal length f4 is 6mm.
7. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that the 5th lens (5)
Focal power for just, its focal length f5 is 5.6mm.
8. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that the 6th lens (6)
Focal power for just, its focal length f6 is 4.2mm.
9. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that the 7th lens (7)
Focal power be negative, its focal length f7 is -2.6mm.
10. the flake endoscope lens of ultra-wide angle according to claim 1 or 2, it is characterised in that the 8th lens
(8) focal power is just, its focal length f7 is 3.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193978.4A CN107797267A (en) | 2017-11-24 | 2017-11-24 | The flake endoscope lens of ultra-wide angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193978.4A CN107797267A (en) | 2017-11-24 | 2017-11-24 | The flake endoscope lens of ultra-wide angle |
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| Publication Number | Publication Date |
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| CN107797267A true CN107797267A (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711193978.4A Pending CN107797267A (en) | 2017-11-24 | 2017-11-24 | The flake endoscope lens of ultra-wide angle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531489A (en) * | 2019-08-13 | 2019-12-03 | 中山依瓦塔光学有限公司 | The unmanned plane pick-up lens of the small distortion of big target surface |
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| TW201115182A (en) * | 2009-10-30 | 2011-05-01 | Young Optics Inc | Fixed-focus lens |
| EP3006977A2 (en) * | 2014-10-09 | 2016-04-13 | Sintai Optical (Shenzhen) Co., Ltd. | Wide-angle lens |
| CN205562935U (en) * | 2016-04-12 | 2016-09-07 | 广东弘景光电科技股份有限公司 | Super wide angle optical system and camera lens of using thereof |
| CN107229107A (en) * | 2017-05-12 | 2017-10-03 | 西安中科飞图光电科技有限公司 | Optical imaging lens and imaging device |
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- 2017-11-24 CN CN201711193978.4A patent/CN107797267A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201115182A (en) * | 2009-10-30 | 2011-05-01 | Young Optics Inc | Fixed-focus lens |
| EP3006977A2 (en) * | 2014-10-09 | 2016-04-13 | Sintai Optical (Shenzhen) Co., Ltd. | Wide-angle lens |
| CN205562935U (en) * | 2016-04-12 | 2016-09-07 | 广东弘景光电科技股份有限公司 | Super wide angle optical system and camera lens of using thereof |
| CN107229107A (en) * | 2017-05-12 | 2017-10-03 | 西安中科飞图光电科技有限公司 | Optical imaging lens and imaging device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531489A (en) * | 2019-08-13 | 2019-12-03 | 中山依瓦塔光学有限公司 | The unmanned plane pick-up lens of the small distortion of big target surface |
| CN110531489B (en) * | 2019-08-13 | 2024-03-26 | 中山依瓦塔光学有限公司 | Unmanned aerial vehicle camera lens of little distortion of big target surface |
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Application publication date: 20180313 |