CN205581389U - Infrared hot imaging optics system of high pixel, high illuminance, low cost - Google Patents
Infrared hot imaging optics system of high pixel, high illuminance, low cost Download PDFInfo
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- CN205581389U CN205581389U CN201620380667.3U CN201620380667U CN205581389U CN 205581389 U CN205581389 U CN 205581389U CN 201620380667 U CN201620380667 U CN 201620380667U CN 205581389 U CN205581389 U CN 205581389U
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- lens
- low cost
- optical system
- thermal imaging
- infrared thermal
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Abstract
The utility model discloses an infrared hot imaging optics system of high pixel, high illuminance, low cost, accessory things side to picture side is equipped with in proper order: first lens (1), first lens (1) be the spherical lens of positive focus to first lens (1) is the glass material for germanium, diaphragm (4), second lens (2), second lens (2) be the aspherical lens of negative focal length to second lens (2) are the glass material for sulphur, third lens (3), third lens (3) be the spherical lens of positive focus, sensitization chip (5). The utility model discloses simple structure, low cost.
Description
[technical field]
This utility model relates to optical system, the highest pixel, high illumination, the infrared thermal imaging light of low cost
System.
[background technology]
The lens of infrared thermal imaging camera lens are typically all and use crystal germanium and zinc sulfide material to carry out imaging at present, this two class
Material price is higher, and particularly crystal germanium can only carry out turnery processing when manufacturing non-spherical lens, and processing cost is high, from
And cause infrared thermal imaging camera lens relatively costly.
Therefore, this utility model is based on above deficiency and produces.
[utility model content]
This utility model purpose is to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, height picture with low cost
The infrared thermal imaging optical system of illumination plain, high.
This utility model is achieved through the following technical solutions:
High pixel, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: from thing side to image side successively
It is provided with:
First lens, the described spherical lens that the first lens are positive focal length, and the first lens 1 are germanium system glass material
Matter；
Diaphragm；
Second lens, the described non-spherical lens that the second lens are negative focal length, and the second lens are chalcogenide glass material
Matter；
3rd lens, the 3rd described lens are the spherical lens of positive focal length；
Sensitive chip.
High pixel as above, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: described
3rd lens are chalcogenide glass material.
High pixel as above, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: described
It is additionally provided with optical filter between 3rd lens and sensitive chip.
High pixel as above, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: described
High pixel, high illumination, the infrared thermal imaging optical system of low cost also include to drive the 3rd lens relative to sensitive chip back and forth
The motor of movement and the voltameter of control the 3rd lens position.
High pixel as above, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: described
The aspherical surface shape of two lens meets equation:
In formula, parameter c is the curvature corresponding to radius, and y is that its unit of radial coordinate is identical with length of lens unit, and k is circular cone
Whose conic coefficient；When k-factor is less than-1, the face sigmoid curves of lens is hyperbola, when k-factor is equal to-1, and the face of lens
Sigmoid curves is parabola；When k-factor is between-1 to 0, the face sigmoid curves of lens is oval, when k-factor is equal to 0, thoroughly
The face sigmoid curves of mirror is circular, and when k-factor is more than 0, the face sigmoid curves of lens is oblate；α1To α8Represent each radial direction respectively
Coefficient corresponding to coordinate.
Compared with prior art, this utility model has the following advantages:
1, the first lens of the present utility model are the spherical lens using germanium system glass material, and crystal germanium is saturating at manufacture sphere
Processing can be ground during mirror, relatively low compared with processing cost for turnery processing.And the second lens are for using chalcogenide glass material
The non-spherical lens of matter, chalcogenide glass can carry out when manufacturing non-spherical lens molding processing, and working (machining) efficiency is high, with low cost,
Avoiding tradition non-spherical lens uses germanium system glass material to need turnery processing and the high cost problem brought.
2, the first lens of the present utility model are the spherical lens of positive focal length, and the second lens are that the aspheric surface of negative focal length is saturating
Mirror, the 3rd lens are the spherical lens of positive focal length, and such structural grouping makes the second lens and the 3rd lens use price just
Suitable chalcogenide glass material also can make optical system whole picture can blur-free imaging, overall illumination can reach 97% with
On, it is highly suitable to be applied in dark surrounds.
3, the 3rd eyeglass of the present utility model can move back and forth by sensitive chip relatively, can make optics by mobile 3rd lens
System high/low temperature and close-shot away from better performances, the most close with the performance of room temperature and infinity.
4, this utility model simple in construction, with low cost, it is suitable for popularization and application.
[accompanying drawing explanation]
Fig. 1 is this utility model schematic diagram.
[detailed description of the invention]
Below in conjunction with the accompanying drawings this utility model is further described:
High pixel, high illumination, the infrared thermal imaging optical system of low cost, be sequentially provided with to image side from thing side:
First lens 1, the first described lens 1 are the spherical lens of positive focal length, and the first lens 1 are germanium system glass material
Matter；
Diaphragm 4；
Second lens 2, the second described lens 2 are the non-spherical lens of negative focal length, and the second lens 2 are chalcogenide glass
Material；
3rd lens 3, the 3rd described lens 3 are the spherical lens of positive focal length；
Sensitive chip 5.
First lens 1 are the spherical lens using germanium system glass material, and crystal germanium can be carried out when manufacturing spherical lens
Attrition process, relatively low compared with processing cost for turnery processing.And the second lens 2 be use chalcogenide glass material aspheric surface saturating
Mirror, chalcogenide glass can carry out when manufacturing non-spherical lens molding processing, working (machining) efficiency is high, with low cost, it is to avoid traditional non-
The high cost problem that spherical lens uses germanium system glass material to need turnery processing and brings.
The 3rd described lens 3 are chalcogenide glass material.First lens 1 are the spherical lens of positive focal length, and the second lens 2 are
The non-spherical lens of negative focal length, the 3rd lens 3 are the spherical lens of positive focal length, and such structural grouping makes the second lens 2 He
3rd lens 3 use low-cost chalcogenide glass material also can make optical system whole picture can blur-free imaging, overall
Illumination can reach more than 97%, is highly suitable to be applied in dark surrounds
It is additionally provided with optical filter 6 between described the 3rd lens 3 and sensitive chip 5.
Described high pixel, high illumination, the infrared thermal imaging optical system of low cost also include driving the 3rd lens 3 phase
The motor (being not drawn in figure) that sensitive chip 5 is moved back and forth and the voltameter (being not drawn in figure) controlling the 3rd lens 3 position.
3rd lens 3 can move back and forth relative to sensitive chip 5, thus the high/low temperature realizing optical system is confocal.
The aspherical surface shape of the second described lens 2 meets equation: In formula, parameter c is the curvature corresponding to radius, and y is that its unit of radial coordinate is with saturating
Mirror long measure is identical, and k is circular cone whose conic coefficient；When k-factor is less than-1, the face sigmoid curves of lens is hyperbola, works as k
When coefficient is equal to-1, the face sigmoid curves of lens is parabola；When k-factor is between-1 to 0, the face sigmoid curves of lens is ellipse
Circle, when k-factor is equal to 0, the face sigmoid curves of lens is circular, and when k-factor is more than 0, the face sigmoid curves of lens is oblate；
α1To α8Represent the coefficient corresponding to each radial coordinate respectively.
When design of Optical System, can even not set vignetting to ensure edge light as much as possible by reducing vignetting
Line arrives sensitive chip 5, and by controlling the refraction angle of rim ray, thus reduce the loss of light, thus reach high
The requirement of illumination.
It addition, reasonably distribute the first lens the 1, second lens 2 and focal length of the 3rd lens 3, and select to close according to focal length
Suitable refraction materials, thus reach high efficiency material adapted；Further, consider that when design of Optical System lifting center solves picture
While power, aberration is corrected, so that the image quality of surrounding visual field is uniform.
Following table is the parameter of this utility model actual design case, and the design case does not set vignetting.
| Face is numbered | Face type | Radius R | Thickness | Material | Effective diameter |
| OBJ | Standard sphere | INFINITY | INFINITY | AIR | INFINITY |
| S1 | Standard sphere | 75.67 | 10.72 | SCGERM_SPECIAL | 99.98 |
| S2 | Standard sphere | 97.38 | 29.53 | AIR | 96.84 |
| Diaphragm | Standard sphere | INFINITY | 0.98 | AIR | 71.31 |
| S3 | Even number aspheric surface | 77.56 | 7.83 | HWS6 | 60.46 |
| S4 | Even number aspheric surface | 52.73 | 45.56 | AIR | 50.24 |
| S5 | Standard sphere | 53.92 | 11.1 | HWS6 | 27.96 |
| S6 | Standard sphere | 66.42 | 2.93 | AIR | 22.75 |
| S7 | Standard sphere | INFINITY | 1 | SCGERM_SPECIAL | 20.90 |
| S8 | Standard sphere | INFINITY | 7.02 | AIR | 20.71 |
| Image planes | Standard sphere | INFINITY | 14.62 |
Following table is the Surface Parameters of the second lens 2:
Claims (5)
- The highest pixel, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: set successively to image side from thing side Have:First lens (1), described the first lens (1) are the spherical lens of positive focal length, and the first lens (1) are germanium system glass Material；Diaphragm (4)；Second lens (2), described the second lens (2) are the non-spherical lens of negative focal length, and the second lens (2) are sulfur system glass Glass material；3rd lens (3), the 3rd described lens (3) are the spherical lens of positive focal length；Sensitive chip (5).
- High pixel the most according to claim 1, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: The 3rd described lens (3) are chalcogenide glass material.
- High pixel the most according to claim 1 and 2, high illumination, the infrared thermal imaging optical system of low cost, its feature exists In: it is additionally provided with optical filter (6) between described the 3rd lens (3) and sensitive chip (5).
- High pixel the most according to claim 3, high illumination, the infrared thermal imaging optical system of low cost, it is characterised in that: Described high pixel, high illumination, the infrared thermal imaging optical system of low cost also include driving the 3rd lens (3) the most photosensitive The motor that chip (5) moves back and forth and the voltameter of control the 3rd lens (3) position.
- High pixel the most according to claim 1 and 2, high illumination, the infrared thermal imaging optical system of low cost, its feature exists Equation is met in: the aspherical surface shape of described the second lens (2): In formula, parameter c is the curvature corresponding to radius, y be radial coordinate its Unit is identical with length of lens unit, and k is circular cone whose conic coefficient；When k-factor is less than-1, the face sigmoid curves of lens is double Curve, when k-factor is equal to-1, the face sigmoid curves of lens is parabola；When k-factor is between-1 to 0, the face shape of lens Curve is oval, and when k-factor is equal to 0, the face sigmoid curves of lens is circular, when k-factor is more than 0, and the face sigmoid curves of lens For oblateness；α1To α8Represent the coefficient corresponding to each radial coordinate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620380667.3U CN205581389U (en) | 2016-04-29 | 2016-04-29 | Infrared hot imaging optics system of high pixel, high illuminance, low cost |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620380667.3U CN205581389U (en) | 2016-04-29 | 2016-04-29 | Infrared hot imaging optics system of high pixel, high illuminance, low cost |
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| CN205581389U true CN205581389U (en) | 2016-09-14 |
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| CN201620380667.3U Active CN205581389U (en) | 2016-04-29 | 2016-04-29 | Infrared hot imaging optics system of high pixel, high illuminance, low cost |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443938A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | High-transmittance type far infrared long wave focusing lens and working method thereof |
| CN106483643A (en) * | 2016-11-28 | 2017-03-08 | 中山联合光电科技股份有限公司 | High-resolution, high illumination, the zoom infra-red thermal imaging system of big multiplying power |
| CN112629669A (en) * | 2020-12-24 | 2021-04-09 | 西安中科立德红外科技有限公司 | Optical athermal infrared lens with two wave bands, common caliber and large target surface and optical system |
-
2016
- 2016-04-29 CN CN201620380667.3U patent/CN205581389U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483643A (en) * | 2016-11-28 | 2017-03-08 | 中山联合光电科技股份有限公司 | High-resolution, high illumination, the zoom infra-red thermal imaging system of big multiplying power |
| CN106483643B (en) * | 2016-11-28 | 2022-10-14 | 中山联合光电科技股份有限公司 | Zoom infrared thermal imaging system |
| CN106443938A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | High-transmittance type far infrared long wave focusing lens and working method thereof |
| CN112629669A (en) * | 2020-12-24 | 2021-04-09 | 西安中科立德红外科技有限公司 | Optical athermal infrared lens with two wave bands, common caliber and large target surface and optical system |
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