CN209674093U - A kind of optical system for monitoring - Google Patents

A kind of optical system for monitoring Download PDF

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Publication number
CN209674093U
CN209674093U CN201920613409.9U CN201920613409U CN209674093U CN 209674093 U CN209674093 U CN 209674093U CN 201920613409 U CN201920613409 U CN 201920613409U CN 209674093 U CN209674093 U CN 209674093U
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China
Prior art keywords
eyeglass
utility
model
glass
optical system
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Application number
CN201920613409.9U
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Chinese (zh)
Inventor
熊剑鸣
龚俊强
刘勇辉
李建华
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Union Optech Co Ltd
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Union Optech Co Ltd
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Priority to CN201920613409.9U priority Critical patent/CN209674093U/en
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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

The utility model provides a kind of optical system for monitoring; including the first eyeglass, diaphragm, the second eyeglass, third eyeglass, the 4th eyeglass, optical filter, protection glass and the sensitive chip set gradually by object plane to image planes; the focal length of first eyeglass and the 4th eyeglass is negative value; the focal length of second eyeglass and the third piece eyeglass is positive value; second eyeglass is glass spheric glass, and first eyeglass, third eyeglass and the 4th eyeglass are plastic aspherical element eyeglass.The utility model uses glass spherical surface and plastic aspherical element, and cost is greatly reduced.The utility model reduces cost, only with 4 pieces of eyeglasses convenient for assembling, and one piece of glass lens is used only, and the lens dimension is smaller, and lens quality is lighter.The utility model can blur-free imaging in entire picture.The utility model very good solution high/low temperature, infrared race coke problem realize image quality in the consistency of varying environment.

Description

A kind of optical system for monitoring
[technical field]
The utility model relates to optical imaging system, especially a kind of optical system for monitoring.
[background technique]
The generally existing such disadvantage of camera lens used in monitoring camera at present: camera lens high/low temperature, infrared not confocal, at high cost Deng.There is a small number of camera lenses on the market, in terms of improving some in the case where sacrificing other aspects, such as in order to realize height Warm, infrared confocal and high pixel, has just used Glass aspheric eyeglass, and cost improves, and is not able to satisfy consumer's low cost Demand.
[utility model content]
The technical problem to be solved by the present invention is to provide high/low temperature, infrared confocal, high pixel and a kind of use of low cost In the optical system of monitoring.
Purpose of the utility model is realized as follows:
A kind of optical system for monitoring, including the first eyeglass, diaphragm, the second mirror set gradually by object plane to image planes Piece, third eyeglass, the 4th eyeglass, optical filter, protection glass and sensitive chip, first eyeglass and the 4th eyeglass Focal length is negative value, and the focal length of second eyeglass and the third piece eyeglass is positive value, and second eyeglass is glass spherical mirror Piece, first eyeglass, third eyeglass and the 4th eyeglass are plastic aspherical element eyeglass.
A kind of optical system for monitoring as described above, first eyeglass, third eyeglass and the 4th eyeglass it is non- Spherical surface type meets following equation:
A kind of optical system for monitoring as described above, the refractive index of first eyeglass are 1.5 to 1.6, Abbe Number is 50 to 60;The refractive index of the third eyeglass is 1.5 to 1.6, and Abbe number is 50 to 60;The refractive index of 4th eyeglass It is 1.6 to 1.7, Abbe number is 20 to 30.
A kind of optical system for monitoring as described above, the model 1/2.7 " of the sensitive chip, and it is diagonal Line height is 6.6mm, and Pixel Dimensions are 2 μm of 2 μ m.
The utility model compared with prior art, has following technical characterstic:
1, existing high pixel monitoring camera generallys use Glass aspheric eyeglass, and the utility model uses glass spherical surface and modeling Expect aspherical, cost is greatly reduced.
2, the eyeglass that existing high pixel monitoring camera generally uses is more, the utility model only with 4 pieces of eyeglasses, reduce at Originally, convenient for assembling, and one piece of glass lens is used only, the lens dimension is smaller, and lens quality is lighter.
3, the periphery resolution ratio of existing high pixel monitoring camera is lower, the utility model entire picture can clearly at Picture.
4, existing high pixel monitoring camera is easy unbalance on image sharpness and color reducibility, this camera lens is using wide light 1:1:1 design is composed, there is fabulous image sharpness and color reducibility in visible light wave range.
5, existing high pixel monitoring camera high/low temperature, it is infrared on can not achieve it is confocal, generate white light room temperature under to good coke Afterwards, occur serious race under high/low temperature and infrared environmental burnt, the fuzzy situation of image planes, the utility model very good solution height Warm, infrared race coke problem realizes image quality in the consistency of varying environment.
[Detailed description of the invention]
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is the structural schematic diagram of the utility model.
[specific embodiment]
A kind of optical system for monitoring, including the first eyeglass 1, the diaphragm 2, second set gradually by object plane to image planes Eyeglass 3, third eyeglass 4, the 4th eyeglass 5, optical filter 6, protection glass 7 and sensitive chip 8, the first eyeglass 1 and the 4th eyeglass 5 Focal length be negative value, the focal length of the second eyeglass 3 and third piece eyeglass 4 is positive value, and the second eyeglass 3 is glass spheric glass, first Eyeglass 1, third eyeglass 4 and the 4th eyeglass 5 are plastic aspherical element eyeglass.
The aspherical face type of first eyeglass 1, third eyeglass 4 and the 4th eyeglass 5 meets following equation:
Wherein c be respective radius R it is reciprocal i.e.: c=1/R.
The refractive index of first eyeglass 1 is 1.5 to 1.6, and Abbe number is 50 to 60.The refractive index of third eyeglass 4 be 1.5 to 1.6, Abbe number is 50 to 60.The refractive index of 4th eyeglass 5 is 1.6 to 1.7, and Abbe number is 20 to 30.
The model 1/2.7 " of sensitive chip 8, and its diagonal height is 6.6mm, Pixel Dimensions are 2 μm of 2 μ m.
The radius R of the face S4 of second eyeglass 3 is -20 to -10, and the radius T of face S5 is -10 to -2.The face S8 of 4th eyeglass 5 Radius R be -5 to -2, the radius R of face S9 is that -10 to -5, k value corresponds to -5 to 5.
The design parameter of the best embodiment of the utility model is set forth below out:
The asphericity coefficient of first eyeglass 1, third eyeglass 4 and each face of the 4th eyeglass 5:
The high/low temperature of the utility model is confocal to be mainly realized by the following method: corresponding swollen using different plastic materials Swollen coefficient is different, redesigns out different face types, and face type when high/low temperature is made to generate complementation, so that image quality when high/low temperature be made to keep not Become.
The infrared of the utility model confocal is mainly realized by the following method: reasonable distribution difference plastic refractive index Nd Make camera lens by designing reasonable face type with Abbe number Vd value under the premise of clear to white light imaging while meeting infrared light Imaging clearly.
Its high pixel of the utility model is mainly realized by following approach: 1. efficient material adapteds, according to each Lens it is positive and negative, reasonably distribute refractive index Nd and Abbe number Vd value, selecting suitable material according to this;2. emphasis mentions when design While rising center resolution, sufficiently payes attention to the aberration correction of surrounding visual field, guarantee that entire picture image quality is uniform;3. using wide light 1:1:1 design is composed, to ensure that high-quality image sharpness and color reducibility.
The utility model is provided with sensitive chip 8 behind the 4th piece of eyeglass 5, while in the 4th piece of eyeglass 5 and photosensitive Optical filter 6 and protection glass 7 are inserted between chip 8, to filter the veiling glare outside design wave band, and in design, it is contemplated that filter The color difference that the substrate material of piece 6 and protection glass 7 introduces, and then be corrected, realize optimal imaging effect.

Claims (4)

1. a kind of optical system for monitoring, it is characterised in that including set gradually by object plane to image planes the first eyeglass (1), Diaphragm (2), the second eyeglass (3), third eyeglass (4), the 4th eyeglass (5), optical filter (6), protection glass (7) and sensitive chip (8), the focal length of first eyeglass (1) and the 4th eyeglass (5) is negative value, second eyeglass (3) and the third mirror The focal length of piece (4) be positive value, second eyeglass (3) be glass spheric glass, first eyeglass (1), third eyeglass (4) and 4th eyeglass (5) is plastic aspherical element eyeglass.
2. a kind of optical system for monitoring according to claim 1, it is characterised in that first eyeglass (1), The aspherical face type of three eyeglasses (4) and the 4th eyeglass (5) meets following equation:
3. a kind of optical system for monitoring according to claim 1 or 2, it is characterised in that first eyeglass (1) Refractive index be 1.5 to 1.6, Abbe number be 50 to 60;The refractive index of the third eyeglass (4) is 1.5 to 1.6, and Abbe number is 50 to 60;The refractive index of 4th eyeglass (5) is 1.6 to 1.7, and Abbe number is 20 to 30.
4. a kind of optical system for monitoring according to claim 3, it is characterised in that the type of the sensitive chip (8) Number be 1/2.7 ", and its diagonal height be 6.6mm, Pixel Dimensions be 2 μm of 2 μ m.
CN201920613409.9U 2019-04-29 2019-04-29 A kind of optical system for monitoring Active CN209674093U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920613409.9U CN209674093U (en) 2019-04-29 2019-04-29 A kind of optical system for monitoring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920613409.9U CN209674093U (en) 2019-04-29 2019-04-29 A kind of optical system for monitoring

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CN209674093U true CN209674093U (en) 2019-11-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109946819A (en) * 2019-04-29 2019-06-28 中山联合光电科技股份有限公司 A kind of optical system for monitoring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109946819A (en) * 2019-04-29 2019-06-28 中山联合光电科技股份有限公司 A kind of optical system for monitoring
CN109946819B (en) * 2019-04-29 2024-05-07 中山联合光电科技股份有限公司 Optical system for monitoring

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