CN107402434A - A kind of ultra-large vision field angle optical lens of three kinds of low-cost optical materials of use - Google Patents
A kind of ultra-large vision field angle optical lens of three kinds of low-cost optical materials of use Download PDFInfo
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- CN107402434A CN107402434A CN201710696101.0A CN201710696101A CN107402434A CN 107402434 A CN107402434 A CN 107402434A CN 201710696101 A CN201710696101 A CN 201710696101A CN 107402434 A CN107402434 A CN 107402434A
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
Abstract
The invention discloses the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of a kind of use, including six microscope groups, eight lens being arranged in order, first microscope group is the meniscus lens of negative power, second microscope group is the biconcave lens of negative power, 3rd microscope group is the balsaming lens of planoconvex spotlight and meniscus, 3rd microscope group is negative power, 4th microscope group is the planoconvex spotlight of positive light coke, 5th microscope group is the balsaming lens of plano-concave lens and meniscus, 5th microscope group is positive light coke, and the 6th microscope group is the planoconvex spotlight of positive light coke.The present invention can improve the deficiencies in the prior art, reduce the cost of projection lens.
Description
Technical field
The present invention relates to a kind of lens construction, the ultra-large vision field angle of three kinds of low-cost optical materials of especially a kind of use
Optical lens.
Background technology
With the development of shadow casting technique, the requirement of all kinds of display and demonstration engineerings and ball screen cinema engineering to projection lens is more next
Higher, particularly pearl eye projection lens with ultra-large vision field angle, demand is more and more in recent years, at present ball curtain, ring on the market
The projection of curtain and special-shaped curtain is more to be realized with Duo Tai projectors integration technology, though use pearl eye projection lens usually require 10 kinds with
On optical material can be only achieved requirement, material unit price average unit price is more than 200 yuan/kilogram, and structure is more complicated,
Lens construction typically needs 10 microscope groups or so and lens numbers are more than 15, and cost is very high, therefore such project cost occupies
It is high not under.
The content of the invention
The technical problem to be solved in the present invention is to provide the ultra-large vision field angle of three kinds of low-cost optical materials of a kind of use
Optical lens, the deficiencies in the prior art are can solve the problem that, reduce the cost of projection lens.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
The ultra-large vision field angle optical lens of three kinds of low-cost optical materials of a kind of use, including six microscope groups being arranged in order
Eight lens, the first microscope group are the meniscus lens of negative power, and the second microscope group is the biconcave lens of negative power, and the 3rd microscope group is
The balsaming lens of planoconvex spotlight and meniscus, the 3rd microscope group are negative power, and the 4th microscope group is the planoconvex spotlight of positive light coke,
5th microscope group is the balsaming lens of plano-concave lens and meniscus, and the 5th microscope group is positive light coke, and the 6th microscope group is positive light coke
Planoconvex spotlight.
Preferably, it is provided with light bar between the 4th described microscope group and the 5th microscope group.
Preferably, the focal length f=4.24mm of lens construction, relative aperture D/f=1/2,2w=180 ° of full filed angle, after
Operating distance is more than 39mm, instead more than more than 9.
Preferably, the refractive index of the first microscope group, the second microscope group and the 6th microscope group is 1.61, Abbe number 58.84；4th
The refractive index of microscope group is 1.60, Abbe number 38；The refractive index of optically flat filter in 3rd microscope group is 1.72, and Abbe number is
29.50, the refractive index of the plano-concave lens in the 3rd microscope group is 1.61, Abbe number 58.84；Plano-concave lens in 5th microscope group
Refractive index is 1.72, Abbe number 29.50, and the refractive index of the planoconvex spotlight in the 5th microscope group is 1.61, Abbe number 58.84.
Preferably, lens construction uses refraction type light path.
A kind of design process of the above-mentioned ultra-large vision field angle optical lens for only using three kinds of low-cost optical materials, first
The basic optical parameter of whole system is set, basic optical parameter includes the angle of visual field, relative aperture, operation wavelength, while rear
Insertion equivalent parallel plate after group, colour splitting prism is closed for analog imaging device inside, system focal length is then adjusted to mesh
Scale value, on this basis, the design optimization method being combined using artificial and design software are transformed the system, optimized,
Transformation, optimization when, ensure light bar between preceding group and rear group, and from rear group closer to；
When late design optimizes, with reference to the calculating of artificial subdivided aperture and visual field, boundary rays and feature light are positioned
Position, the correlation of various aberrations in lens construction, Proper Match aberration are found, then lens construction is optimized.
Preferably, the thickness of equivalent parallel plate determines according to image device.
Preferably, the material of equivalent parallel plate is H-K9L.
A kind of purposes of the above-mentioned ultra-large vision field angle optical lens for only using three kinds of low-cost optical materials, to camera lens knot
After front and rear group of airspace of structure and lens curvature radius are adjusted, for realizing that based on DLP, LCD chip size be 0.55-
1.3 inch range difference light digital projectors and CCD or CMOS photography and vedio recordings and monitoring that chip size is 1/3 to 1 inch
Shooting uses, and full filed angle adjusts between 160-200 degree.
It is using beneficial effect caused by above-mentioned technical proposal：
1st, it is not very well to cost control during existing Patent design, does not limit the species of optical glass, quantity
And cost unit price.The patent of this application is calculated by carrying out substantial amounts of optimization, passes through optics in the operand pair system of correlation
The refractive index and abbe number scope of glass are controlled, and the higher optical glass of unit price originally is converted into inexpensive process
Optical glass, selected Optical Glass Chemical Stability Test is good, easy to process, and design process is made to system tolerance analysis in addition
It is more tight, accurately, take into full account system margins performance, the face type error of optical element and the tolerance performance of relative dimensions error
It is relatively strong, lower than custom requirements 50% or so.
2nd, simple in construction, difficulty of processing is low, significantly reduces processing cost, and tolerance performance is stronger；With other existing camera lens knots
Form as on the premise of identical in quality, only with 3 kinds of optical materials, optical texture is 6 microscope group, 8 lens, all using domestic
Low-cost optical material, material average unit price significantly reduce processing cost within 80 yuan/kilogram；
Although the 3, the existing patent angle of visual field, resolution ratio, contrast etc. can also reach higher level, it is built upon from material
Expect wide in variety, unit price height, on the basis of complicated.Patent of this application is only to use 3 kinds of optical glass, and it is monovalent compared with
It is low, reach on the premise of simple in construction with other patents similar in imaging effect.
4th, there is ultra-large vision field angle (full filed angle is 160-200 degree), high-resolution, high-contrast and good aberration school
Plus effect；
5th, it is versatile, carry out appropriate adjustment to organizing airspace and individual lenses radius of curvature before and after this structure
Realize based on DLP, LCD chip size is 0.55-1.3 inch ranges difference light digital projector and chip size is 1/3 to 1
CCD the or CMOS photography and vedio recordings of inch and monitoring camera use, and full filed angle can adjust before 160-200 degree.
6th, existing patent requires to design only for specific optical system imaging.The patent of this application is set in system architecture
The engine structure of all kinds of imaging systems is taken into full account during meter, to the light path system of different application equipment using various sizes of
Parallel flat is simulated, and the aberration of each imaging system in itself is effectively corrected by optimizing structure, makes the system adaptation all kinds of not
Same imaging system.
Brief description of the drawings
Fig. 1 is the structure chart of an embodiment of the invention.
Fig. 2 is Fig. 1 ray tracing schematic diagram.
In figure：1st, the first microscope group；2nd, the second microscope group；3rd, the 3rd microscope group；4th, the 4th microscope group；5th, the 5th microscope group；6th, the 6th mirror
Group；7th, light bar.
Embodiment
Reference picture 1-2, one embodiment of the present invention include six microscope groups, eight lens being arranged in order, the first microscope group
1 is the meniscus lens of negative power, and the second microscope group 2 is the biconcave lens of negative power, and the 3rd microscope group 3 is planoconvex spotlight and convex-concave
The balsaming lens of lens, the 3rd microscope group 3 are negative power, and the 4th microscope group 4 is the planoconvex spotlight of positive light coke, and the 5th microscope group 5 is
The balsaming lens of plano-concave lens and meniscus, the 5th microscope group 5 are positive light coke, and the 6th microscope group 6 is saturating for the plano-convex of positive light coke
Mirror.Light bar 7 is provided between the 4th described microscope group 4 and the 5th microscope group 5.The focal length f=4.24mm of lens construction, relative aperture
(D/f)=1/2,2w=180 ° of full filed angle, back work distance is from more than 39mm, instead more than more than 9.First microscope group 1, the second microscope group
2 and the 6th microscope group 6 refractive index be 1.61, Abbe number 58.84；The refractive index of 4th microscope group 4 is 1.60, Abbe number 38；
The refractive index of optically flat filter in 3rd microscope group 3 is 1.72, Abbe number 29.50, the folding of the plano-concave lens in the 3rd microscope group 3
It is 1.61 to penetrate rate, Abbe number 58.84；The refractive index of plano-concave lens in 5th microscope group 5 is 1.72, Abbe number 29.50, the
The refractive index of planoconvex spotlight in five microscope groups 5 is 1.61, Abbe number 58.84.Lens construction uses refraction type light path.
The design method of this camera lens is as follows：Set the basic optical parameter of whole system in software first：The angle of visual field, phase
To aperture, operation wavelength, at the same insert after rear group certain thickness (thickness according to image device different and different) etc.
Parallel flat is imitated, material is set as H-K9L, closes colour splitting prism for analog imaging device inside, the camera lens so designed is just
Image quality during use is more can guarantee that, system focal length is then adjusted to desired value, on this basis, using artificial and design
The design optimization method that software is combined, the system is transformed, optimized.In transformation, optimization, ensure that light bar is located at preceding group
Between rear group, and from rear group closer to each visual field, each aperture, the optical path difference on each corrugated organized after can so ensureing
It is smaller, be advantageous to the further optimization correction of aberration.
When late design optimizes, with reference to the accurate calculating of artificial subdivided aperture and visual field, boundary rays are accurately positioned
With feature ray position, the correlations of various aberrations in camera lens is found, Proper Match aberration, then by constantly optimization, directly
There is preferable aberration quality, uniform illuminance of image plane and good manufacturability to the lens construction.Noted in optimization process
Meaning updates and adjusts various optimization target values at any time.
When the camera lens equivalent focal length is 1mm, its structural parameters is as follows：
| Surface | Type | Radius/mm | Thickness/mm | Material |
| 1 | STANDARD | 44.6281224 | 0.9433625 | H-ZK4 |
| 2 | EVENASPH | 7.9105664 | 7.4090720 | |
| 3 | STANDARD | -18.8672504 | 0.7546900 | H-ZK4 |
| 4 | STANDARD | 11.6033590 | 11.5944671 | |
| 5 | STANDARD | Infinity | 1.1792032 | ZF3 |
| 6 | STANDARD | -142.117564 | 0.7075219 | H-ZK4 |
| 7 | STANDARD | 11.3014830 | 7.4158339 | |
| 8 | STANDARD | Infinity | 2.5942469 | H-F1 |
| STO | STANDARD | -14.1351082 | 34.0310161 | |
| 10 | STANDARD | Infinity | 0.1179203 | |
| 11 | STANDARD | 19.4474184 | 0.4716813 | ZF3 |
| 12 | STANDARD | 5.1318921 | 1.1792032 | H-ZK4 |
| 13 | STANDARD | -77.7330717 | 0.2358406 | |
| 14 | STANDARD | 7.6471324 | 0.9433625 | H-ZK4 |
| 15 | STANDARD | -123.769163 | 4.2576392 | |
| 16 | STANDARD | Infinity | 5.6601751 | H-K9L |
| 17 | STANDARD | Infinity | 1.3840641 |
Appropriate adjustment is carried out to organizing airspace and individual lenses radius of curvature before and after the lens construction described in this example
It can be achieved based on DLP, LCD chip size is 0.55-1.3 inch ranges difference light digital projector and chip size is 1/
3 to 1 inches of CCD or CMOS photography and vedio recordings and monitoring camera use.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of a kind of use, it is characterised in that：Including arranging successively
Six microscope groups, eight lens of row, the first microscope group (1) are the meniscus lens of negative power, and the second microscope group (2) is the double of negative power
Concavees lens, the 3rd microscope group (3) are the balsaming lens of planoconvex spotlight and meniscus, and the 3rd microscope group (3) is negative power, the 4th mirror
Group (4) is the planoconvex spotlight of positive light coke, and the 5th microscope group (5) is the balsaming lens of plano-concave lens and meniscus, the 5th microscope group
(5) it is positive light coke, the 6th microscope group (6) is the planoconvex spotlight of positive light coke.
2. the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of according to claim 1 use, its feature
It is：Light bar (7) is provided between the 4th described microscope group (4) and the 5th microscope group (5).
3. the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of according to claim 1 use, its feature
It is：The focal length f=4.24mm of lens construction, relative aperture (D/f)=1/2,2w=180 ° of full filed angle, back work distance is from big
In 39mm, instead more than more than 9.
4. the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of according to claim 1 use, its feature
It is：The refractive index of first microscope group (1), the second microscope group (2) and the 6th microscope group (6) is 1.61, Abbe number 58.84；4th mirror
The refractive index of group (4) is 1.60, Abbe number 38；The refractive index of optically flat filter in 3rd microscope group (3) is 1.72, Abbe number
For 29.50, the refractive index of the plano-concave lens in the 3rd microscope group (3) is 1.61, Abbe number 58.84；It is flat in 5th microscope group (5)
The refractive index of concavees lens is 1.72, Abbe number 29.50, and the refractive index of the planoconvex spotlight in the 5th microscope group (5) is 1.61, Abbe
Number is 58.84.
5. the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of according to claim 1 use, its feature
It is：Lens construction uses refraction type light path.
A kind of 6. manufacturer of the ultra-large vision field angle optical lens for only using three kinds of low-cost optical materials described in claim 2
Method, it is characterised in that：First set whole system basic optical parameter, basic optical parameter include the angle of visual field, relative aperture,
Operation wavelength, while equivalent parallel plate is inserted after rear group, colour splitting prism is closed for analog imaging device inside, then will
System focal length is adjusted to desired value, and on this basis, the design optimization method being combined using artificial and design software is to this
System transformed, optimized, transformation, optimization when, ensure light bar between preceding group and rear group, and from rear group closer to；
When late design optimizes, with reference to the calculating of artificial subdivided aperture and visual field, boundary rays and feature ray position are positioned,
The correlation of various aberrations in lens construction, Proper Match aberration are found, then lens construction is optimized.
7. the manufacturer of the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of according to claim 6 use
Method, it is characterised in that：The thickness of equivalent parallel plate determines according to image device.
8. the manufacturer of the ultra-large vision field angle optical lens of three kinds of low-cost optical materials of according to claim 6 use
Method, it is characterised in that：The material of equivalent parallel plate is H-K9L.
A kind of 9. ultra-large vision field angle optical frames for only using three kinds of low-cost optical materials described in claim 1-5 any one
The purposes of head, it is characterised in that：After being adjusted to front and rear group of airspace of lens construction and lens curvature radius, for reality
Now it is based on DLP, LCD chip size is 0.55-1.3 inch ranges difference light digital projector and chip size is 1/3 to 1 English
Very little CCD or CMOS photography and vedio recordings and monitoring camera use, and full filed angle adjusts between 160-200 degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710696101.0A CN107402434B (en) | 2017-08-15 | 2017-08-15 | A kind of ultra-large vision field angle optical lens only using three kinds of low-cost optical materials |
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| CN201710696101.0A CN107402434B (en) | 2017-08-15 | 2017-08-15 | A kind of ultra-large vision field angle optical lens only using three kinds of low-cost optical materials |
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| CN107402434A true CN107402434A (en) | 2017-11-28 |
| CN107402434B CN107402434B (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679400A (en) * | 2020-06-22 | 2020-09-18 | 秦皇岛视听机械研究所有限公司 | Detection lens only using three domestic optical materials and design method and application thereof |
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| CN103246047A (en) * | 2013-05-27 | 2013-08-14 | 秦皇岛视听机械研究所 | Large-field angle low-projection ratio digital projector lens |
| CN104020551A (en) * | 2014-05-22 | 2014-09-03 | 秦皇岛视听机械研究所 | Digital short-focus projection lens by use of only two optical materials |
| JP2015036778A (en) * | 2013-08-14 | 2015-02-23 | 株式会社ニコン | Photographing lens, optical device, and method for manufacturing the photographing lens |
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2017
- 2017-08-15 CN CN201710696101.0A patent/CN107402434B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246047A (en) * | 2013-05-27 | 2013-08-14 | 秦皇岛视听机械研究所 | Large-field angle low-projection ratio digital projector lens |
| JP2015036778A (en) * | 2013-08-14 | 2015-02-23 | 株式会社ニコン | Photographing lens, optical device, and method for manufacturing the photographing lens |
| CN104020551A (en) * | 2014-05-22 | 2014-09-03 | 秦皇岛视听机械研究所 | Digital short-focus projection lens by use of only two optical materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679400A (en) * | 2020-06-22 | 2020-09-18 | 秦皇岛视听机械研究所有限公司 | Detection lens only using three domestic optical materials and design method and application thereof |
| CN111679400B (en) * | 2020-06-22 | 2022-05-10 | 秦皇岛视听机械研究所有限公司 | Detection lens only using three domestic optical materials and design method and application thereof |
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| CN107402434B (en) | 2019-11-08 |
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