CN209070204U - A kind of big visual field UV warming lens system - Google Patents
A kind of big visual field UV warming lens system Download PDFInfo
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- CN209070204U CN209070204U CN201821887997.7U CN201821887997U CN209070204U CN 209070204 U CN209070204 U CN 209070204U CN 201821887997 U CN201821887997 U CN 201821887997U CN 209070204 U CN209070204 U CN 209070204U
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- positive light
- light coke
- warming
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Abstract
The utility model relates to a kind of big visual field UV warming lens systems, and the system comprises the negative power meniscus set gradually, the first negative power biconcave lens, positive light coke concave-convex lens, the first positive light coke plano-convex lens, the second positive light coke plano-convex lens, negative power plano-concave lens, diaphragm, the first positive light coke biconvex lens, negative power concave-convex lens, the second positive light coke biconvex lens and the second negative power biconcave lens.While obtaining simple structure, object lens of large relative aperture, field angle also than being increased before, reaches 120 °, reduces the loss of luminous energy the utility model.According to point range figure, the disc of confusion in image planes is within the scope of required value 180mm；Relative illumination and distortion figure can be seen that illuminance uniformity and distortion value have obtained fine control.
Description
Technical field
The utility model relates to UV warming lens technology field, especially a kind of big visual field UV warming lens system.
Background technique
UV warming as defence guided missile short range alarm means, mainly have false alarm rate is low, detection accuracy is high, visual field cover
Extensively, the advantages that low to sun susceptibility, insensitive to enemy's interference, the high problem of infrared warning system false alarm rate is compensated for.
UV warming lens system based on the above feature, the requirement to its ultraviolet imagery optical lens is: ultra-wide angle, big
Relative aperture, illuminance of image plane are uniform, point target or class point target are imaged etc..And in conventional objective design, picture can not be improved
The problems such as face illumination and off-axis aberration are difficult to control, field of view angle does not reach 120 ° yet.
Utility model content
The purpose of this utility model is to provide for a kind of big visual field UV warming lens system.
The technical solution of the utility model is: a kind of big visual field UV warming lens system, the system comprises successively set
The negative power meniscus set, the first negative power biconcave lens, positive light coke concave-convex lens, the first positive light coke plano-convex are saturating
Mirror, the second positive light coke plano-convex lens, negative power plano-concave lens, diaphragm, the first positive light coke biconvex lens, negative power are recessed
Convex lens, the second positive light coke biconvex lens and the second negative power biconcave lens.
A kind of above-mentioned big visual field UV warming lens system, the system also includes spacer ring and pressing ring, the spacer ring and
Pressing ring is between two lens.
The beneficial effects of the utility model are: a kind of big visual field UV warming lens optical system of the utility model is obtaining
Structure is simple, object lens of large relative aperture while, field angle also than being increased before, reaches 120 °, reduces the loss of luminous energy.Root
According to point range figure, the disc of confusion in image planes is within the scope of required value 180mm；Relative illumination and distortion figure can be seen that, illuminance uniformity
Fine control has been obtained with distortion value.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of big visual field UV warming lens optical system of the embodiment of the present application；
Fig. 2 is the point range figure of the big visual field UV warming optical system of the embodiment of the present application；
Fig. 3 is the defocus point range figure of the big visual field UV warming optical system of the embodiment of the present application；
Fig. 4 is the astigmatism curvature of field and distortion curve of the embodiment of the present application；
Fig. 5 is the relative illumination figure of the embodiment of the present application；
Fig. 6 is the MTF transfer curve figure of the embodiment of the present application.
In figure: 1- negative power meniscus, the first negative power of 2- biconcave lens, 3- positive light coke concave-convex lens, 4-
First positive light coke plano-convex lens, the second positive light coke of 5- plano-convex lens, 6- negative power plano-concave lens, 7- diaphragm, 8- first
Positive light coke biconvex lens, 9- negative power concave-convex lens, the second positive light coke of 10- biconvex lens, the second negative power of 11- are double
Concavees lens.
Specific embodiment
In order to more clearly state the utility model, the utility model is further described with reference to the accompanying drawing.
Refering to fig. 1, a kind of big visual field UV warming lens system, the system comprises the negative power convex-concaves set gradually
Lens 1, the first negative power biconcave lens 2, positive light coke concave-convex lens 3, the first positive light coke plano-convex lens 4, the second positive light
Focal power plano-convex lens 5, negative power plano-concave lens 6, diaphragm 7, the first positive light coke biconvex lens 8, negative power concave-convex lens
9, the second positive light coke biconvex lens 10 and the second negative power biconcave lens 11.
The embodiment of the present application uses retrofocus type lens system, is designed to image space telecentricity form.According to distortion and focal length choosing
Suitable structure is selected, then zooming in and out makes visual field, numerical aperture etc. reach technical value, and lens material changes into ultraviolet relatively good
F-SILICA and LIF has selected 10 8 groups of type UV warming optical systems.
In addition, positive negative lens combines, designing achromatic basic principle is the material that positive lens selects v value (Abbe number) big
Material, the material that negative lens selects v value (Abbe number) small.Negative lens is fused quartz than convenient material, and positive lens is available
Material LIF, is conducive to aberration correction.
Optical system wave band is 250-280nm in the application, and 120 ° of field angle, (clear aperture/camera lens is burnt for relative aperture ratio
Away from) 1:2.4.
The embodiment of the present application is firstly, adjustment stop position further decreases field angle of image, then several before diaphragm
What vignetting eliminates, and allows field of view edge light beam full of aperture diaphragm, makes to contrast angle value increase, and then structure is organized in adjustment front and back,
The drift angle for allowing field of view edge light to bear on each lens is more reasonable, and system structure is more compact, and outside emphasis control shaft
Point disc of confusion, improves image quality progress.
A kind of above-mentioned big visual field UV warming lens system, the system also includes spacer ring and pressing ring, the spacer ring and
Pressing ring is between two lens.
It is connected between lens and lens by spacer ring and pressing ring, guarantees the reliability of structure
Fig. 2 is the point range figure of the big visual field UV warming optical system of the embodiment of the present application.
Fig. 3 is the defocus point range figure of the big visual field UV warming optical system of the embodiment of the present application.
Fig. 4 is the astigmatism curvature of field and distortion curve of the embodiment of the present application, and right side is distortion figure, and abscissa is distortion percentage
Than ordinate is visual field, and distortion value is less than 35% in figure.Left side is curvature of field figure, and T is meridianal curvature of field, and S is Sagittal field curvature, the curvature of field
< 0.7mm；Two curvilinear abscissas subtract each other as astigmatism value, it can be seen that astigmatism very little.
Fig. 5 is the relative illumination figure of the embodiment of the present application, and image illumination uniformity reaches 85% or more.
Fig. 6 is the MTF transfer curve figure of the embodiment of the present application, MTF minimum value 0.7 or so (20lp/mm).
The embodiment created above to the utility model is described in detail, but the content is only the utility model wound
The preferred embodiment made, should not be considered as limiting the scope of the present invention.It is all to create range according to the utility model
Made all the changes and improvements etc., shall still fall within the scope of this patent.
Claims (2)
1. a kind of big visual field UV warming lens system, which is characterized in that the system comprises the negative power set gradually is convex
Concavees lens (1), the first negative power biconcave lens (2), positive light coke concave-convex lens (3), the first positive light coke plano-convex lens
(4), the second positive light coke plano-convex lens (5), negative power plano-concave lens (6), diaphragm (7), the first positive light coke biconvex lens
(8), negative power concave-convex lens (9), the second positive light coke biconvex lens (10) and the second negative power biconcave lens (11).
2. a kind of big visual field UV warming lens system according to claim 1, which is characterized in that the system also includes
Spacer ring and pressing ring, the spacer ring and pressing ring are between two lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821887997.7U CN209070204U (en) | 2018-11-16 | 2018-11-16 | A kind of big visual field UV warming lens system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821887997.7U CN209070204U (en) | 2018-11-16 | 2018-11-16 | A kind of big visual field UV warming lens system |
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| Publication Number | Publication Date |
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| CN209070204U true CN209070204U (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821887997.7U Active CN209070204U (en) | 2018-11-16 | 2018-11-16 | A kind of big visual field UV warming lens system |
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| CN (1) | CN209070204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022075939A1 (en) * | 2020-10-05 | 2022-04-14 | Arcelik Anonim Sirketi | A laundry dryer comprising a uv light source |
-
2018
- 2018-11-16 CN CN201821887997.7U patent/CN209070204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022075939A1 (en) * | 2020-10-05 | 2022-04-14 | Arcelik Anonim Sirketi | A laundry dryer comprising a uv light source |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230908 Address after: Room A609, Building 8, East Zone, Airport Business Park, No. 80 Huanhe North Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone), Binhai New Area, Tianjin, 300000 Patentee after: Tianjin Tianqi Optoelectronic Technology Co.,Ltd. Address before: 121000 No.1 Huanghai street, Nanzhan New District, Jinzhou City, Liaoning Province Patentee before: JINZHOU HANGXING PHOTOELECTRIC EQUIPMENT Co.,Ltd. |