CN207611190U - Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction - Google Patents
Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction Download PDFInfo
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- CN207611190U CN207611190U CN201721267658.4U CN201721267658U CN207611190U CN 207611190 U CN207611190 U CN 207611190U CN 201721267658 U CN201721267658 U CN 201721267658U CN 207611190 U CN207611190 U CN 207611190U
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Abstract
The utility model is related to a kind of portable wide angle opticals without thermalization LONG WAVE INFRARED optical system and lens construction, it include first month concavees lens A, biconvex lens B, second month concavees lens C and moon convex lens D set gradually along light incident direction, first month concave lens are at least aspherical on one side, second month concave lens are at least aspherical on one side, and the concave surface of second month concave lens is towards light incident direction, the moon convex lens is at least aspherical on one side, and the convex surface of moon convex lens is towards light incident direction.The optical system and lens construction are not only simple in structure, realize middle long wave limit can blur-free imaging, and reduce manufacture difficulty.
Description
Technical field
The utility model is related to a kind of portable wide angle opticals without thermalization LONG WAVE INFRARED optical system and lens construction.
Background technology
As contactless temperature-measuring technology, it has many good qualities infrared temperature-test technology compared with traditional thermometry, first,
Thermometric field is not interfered in its measurement, does not influence Temperature Distribution, higher in accuracy and precision；Secondly, infrared measurement of temperature test speed
Soon, it and can observe in real time, it is big to measure advantage；Again, infrared measurement of temperature can closely can be remote, and can be adaptable with night work；Most
Afterwards, the range of infrared measurement of temperature is wide, theoretically without the test upper limit.This allows for infrared temperature-test technology power industry, space flight and aviation, matter
The fields such as amount detection, metallurgy have obtained wide model application, and infrared measurement of temperature camera lens just comes into being.
From optical principle it is found that focal length is shorter, visual angle is bigger, therefore and caused by deform it is also bigger, it is remoter from center, become
Shape is stronger.In order to reach 79 degree or more of big visual angle, the designer of wide-angle lens has to make sacrifice, that is, allows this change
Shape（Barrel distortion）Reasonable presence, this characteristic has its applicable situation, but commercial measurement and photographic recording etc. are needed to protect
It is very unfavorable really to apply.
It is that aberration is difficult to eliminate to design wide-angle lens optical system problem encountered, and distortion is big, traditional design structure
Complexity, number of lenses are more, and weight is larger, is not suitable for portable system, it is necessary to carry out new design.
Invention content
The purpose of this utility model is to provide a kind of portable wide angle opticals without thermalization LONG WAVE INFRARED optical system and mirror
Header structure is not only simple in structure, realize middle long wave limit can blur-free imaging, and reduce manufacture difficulty.
The technical solution of the utility model is：A kind of portable wide angle optical is without thermalization LONG WAVE INFRARED optical system, packet
Include first month concave lens, biconvex lens, second month concave lens and the moon convex lens set gradually along light incident direction, described
January, concavees lens were at least aspherical on one side, and second month concave lens are at least aspherical on one side, and second month recessed
The concave surface of mirror is towards light incident direction, and the moon convex lens is at least aspherical on one side, and the convex surface of moon convex lens is towards light
Incident direction.
Further, first month airspace between concavees lens and biconvex lens is 14mm；The biconvex lens
Airspace between second month concave lens is 3mm；Airspace between second month concave lens and moon convex lens is
7mm。
A kind of portable wide angle optical is without thermalization LONG WAVE INFRARED lens construction, including body tube, along light in the body tube
Line incident direction is sequentially installed with first month concave lens, biconvex lens, second month concave lens and moon convex lens, and described first month recessed
Be provided with the first spacer ring between lens and biconvex lens, the biconvex lens and second month be provided between concavees lens second every
Be provided with third spacer ring between circle, second month concave lens and moon convex lens, the front end of the body tube be bolted with for
The preceding trim ring that the front end circumference of first month concave lens abuts against.
Further, first month concave lens are at least aspherical, second month concave lens at least one on one side
Face is aspherical, and the concave surface of second month concave lens is towards light incident direction, the moon convex lens be at least on one side it is aspherical,
And the convex surface of moon convex lens is towards light incident direction.
Further, first month airspace between concavees lens and biconvex lens is 14mm；The biconvex lens
Airspace between second month concave lens is 3mm；Airspace between second month concave lens and moon convex lens is
7mm。
Further, it is 0.8mm positioned at the wall thickness of section where first month concave lens and the first spacer ring in the primary mirror.
Further, cyclic annular position limiting structure, body tube upper annular limit are provided on the periphery of the body tube rear end
The external screw thread for being connected with detector is provided on rear side of bit architecture.
Compared with prior art, the utility model has the following advantages：In optical design, to 8~12 μm of wide light
Spectral limit carries out aberration correction and balance, and camera lens is made all to have excellent image quality in wide spectral range, and it is confocal to realize wide spectrum,
In this way camera lens middle long wave limit can blur-free imaging；The optical glass material for selecting high refraction, low dispersion, by design and excellent
The advantages that changing, correct the various aberrations of optical lens, camera lens is made to realize high-resolution, object lens of large relative aperture；Eyeglass uses aspheric
Face is designed, and correction spherical aberration and reduction reduce number of lenses while distortion；By the characteristic of different optical materials, realize
The imaging performance that material adaptively adjusts optical system is sold off by not equality of temperature in the case of different temperatures, realizes optics without thermalization；
In structure design, the airspace between eyeglass is only influenced by corresponding spacer ring, greatly reduces manufacture difficulty and size to optics
The influence of system, and integrally there was only 5 mechanical parts, so that camera lens is realized that weight is most light by minimum wall thickness (MINI W.) design.
Description of the drawings
Fig. 1 is the structural schematic diagram of the optical system of the utility model；
Fig. 2 is the structural schematic diagram of the camera lens of the utility model；
In figure：First month concave lens of A-；B- biconvex lens；Second month concavees lens C of C-；D- month convex lenses；1- body tubes；2-
Preceding trim ring；3- AB spacer rings；4-BC spacer rings；5-CD spacer rings；6- annular protrusions；7- abutting parts；8- ring-type position limiting structures；The outer spiral shells of 9-
Line.
Specific implementation mode
For allow the utility model features described above and advantage can be clearer and more comprehensible, special embodiment below, and coordinate attached drawing,
It is described in detail below, but the utility model is not limited to this.
With reference to figure 1 and Fig. 2
A kind of portable wide angle optical includes being set gradually along light incident direction without thermalization LONG WAVE INFRARED optical system
First month concavees lens A, biconvex lens B, second month concavees lens C and moon convex lens D, first month concave lens are at least on one side
Aspherical, second month concave lens are at least aspherical on one side, and the concave surface of second month concave lens is towards light incident direction,
The moon convex lens is at least aspherical on one side, and the convex surface of moon convex lens is towards light incident direction.
In the present embodiment, first month airspace between concavees lens and biconvex lens is 14mm；The lenticular
Airspace between mirror and second month concave lens is 3mm；Airspace between second month concave lens and moon convex lens
For 7mm, to which ensure can blur-free imaging in middle long wave limit.
In the present embodiment, four lens optical materials are different in the camera lens, and at different temperatures, the refractive index of eyeglass is sent out
Raw different changes, the offset for the focal plane that the variation of adaptive equalization eyeglass R values is brought.
A kind of portable wide angle optical is without thermalization LONG WAVE INFRARED lens construction, including body tube 1, along light in the body tube
Line incident direction is sequentially installed with first month concavees lens A, biconvex lens B, second month concavees lens C and moon convex lens D, and described first
It is provided with the first spacer ring 3 between month concavees lens and biconvex lens, the biconvex lens and second month are provided with the between concavees lens
It is provided with third spacer ring 5 between two spacer rings 4, second month concave lens and moon convex lens, the front end of the body tube is bolted with
Preceding trim ring 2 for being abutted against with the front end circumference of first month concave lens ensures the air between each eyeglass by each spacer ring
Interval.
In the present embodiment, first month concave lens are on one side at least aspherical, and second month concave lens are at least
It is aspherical on one side, and the concave surface of second month concave lens, towards light incident direction, the moon convex lens is at least aspheric on one side
Face, and the convex surface of moon convex lens is towards light incident direction.
In the present embodiment, the inner ring diameter of the body tube is gradually reduced along light incident direction is stepped, and primary mirror
The rear end of cylinder is provided with annular protrusion 6, the chamber for installing moon convex lens is provided in the annular protrusion and with being used for
The abutting part 7 for abutting moon convex lens rear end circumference, to ensure the positioning of moon convex lens.
In the present embodiment, four lens optical materials are different in the camera lens, and at different temperatures, the refractive index of eyeglass is sent out
Raw different changes, the offset for the focal plane that the variation of adaptive equalization eyeglass R values is brought.
In the present embodiment, first month airspace between concavees lens and biconvex lens is 14mm；The lenticular
Airspace between mirror and second month concave lens is 3mm；Airspace between second month concave lens and moon convex lens
For 7mm.
In the present embodiment, the wall thickness in the primary mirror positioned at first month concave lens and the first spacer ring place section is 0.8mm.
In the present embodiment, it is provided with cyclic annular position limiting structure 8 on the periphery of the body tube rear end, for ensureing flange
It is burnt afterwards.The external screw thread 9 for being connected with detector is provided on rear side of body tube upper annular position limiting structure.
In the present embodiment, compensation adjustment includes the following steps：
（1）Temperature change causes eyeglass R values to change, and focal plane shifts；
（2）Different changes, adaptive equalization has occurred in eyeglass A, B, C, D refractive index of different materials at different temperatures
Offset caused by the variation of R values.
In the present embodiment, the optical system being made of above-mentioned lens set has reached following optical index：
1）Focal length：f′=7.5mm；
2）Relative aperture F：1.0；
3）Field angle：2w≥79°；
4）Resolution ratio：It can be adapted to 640 × 512 17 μm of detector video cameras；
5）Total length of light path ∑≤45mm, optics rear cut-off distance l ' >=8.5mm；
6）It is applicable in spectral line range：8μm~12μm.
In the utility model embodiment, each lens parameters are as follows：
。
The lens construction is small and light, and total weight only has 40g, and apply to portable infrared thermal imaging system etc. has spy to weight
The instrument not required has prodigious advantage；Field angle is tested up to 79 °, visual field bigger is more conducive to search target, distorts simultaneously
Less than 16%, reduce distortion, helps to improve the accuracy of information judgement；Different optical materials, optical system are sold off with temperature
Self-adaptive temperature of uniting changes, and solves eyeglass caused focal plane offset problem under condition of different temperatures, accurately clearly captures
The Energy distribution of test object under condition of different temperatures.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the claims it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (2)
1. a kind of portable wide angle optical is without thermalization LONG WAVE INFRARED optical system, which is characterized in that including along light incident direction
First month concave lens, biconvex lens, second month concave lens and the moon convex lens set gradually, first month concave lens are at least
It is aspherical on one side, second month concave lens are at least aspherical on one side, and the concave surface of second month concave lens enters towards light
Penetrate direction, the moon convex lens is at least aspherical on one side, and the convex surface of moon convex lens is towards light incident direction；Described first
Airspace between month concavees lens and biconvex lens is 14mm；Between air between the biconvex lens and second month concave lens
It is divided into 3mm；Airspace between second month concave lens and moon convex lens is 7mm.
2. a kind of portable wide angle optical is without thermalization LONG WAVE INFRARED lens construction, which is characterized in that including body tube, the primary mirror
It is sequentially installed with first month concave lens, biconvex lens, second month concave lens and moon convex lens along light incident direction in cylinder, it is described
The first spacer ring is provided within first month between concavees lens and biconvex lens, the biconvex lens and second month are provided between concavees lens
It is provided with third spacer ring between second spacer ring, second month concave lens and moon convex lens, the front end of the body tube is bolted with
Preceding trim ring for being abutted against with the front end circumference of first month concave lens, first month concave lens are at least aspheric on one side
Face, second month concave lens are at least aspherical on one side, and the concave surface of second month concave lens is towards light incident direction, described
Month convex lens is at least aspherical on one side, and the convex surface of moon convex lens is towards light incident direction；First month concave lens and
Airspace between biconvex lens is 14mm；Airspace between the biconvex lens and second month concave lens is 3mm；Institute
It is 7mm to state the airspace between second month concave lens and moon convex lens；It is located at first month concave lens and first in the primary mirror
The wall thickness of section where spacer ring is 0.8mm；It is provided with cyclic annular position limiting structure, body tube on the periphery of the body tube rear end
The external screw thread for being connected with detector is provided on rear side of upper annular position limiting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721267658.4U CN207611190U (en) | 2017-09-29 | 2017-09-29 | Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721267658.4U CN207611190U (en) | 2017-09-29 | 2017-09-29 | Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction |
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| CN207611190U true CN207611190U (en) | 2018-07-13 |
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| CN201721267658.4U Active CN207611190U (en) | 2017-09-29 | 2017-09-29 | Portable wide angle optical is without thermalization LONG WAVE INFRARED optical system and lens construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526154A (en) * | 2017-09-29 | 2017-12-29 | 福建福光天瞳光学有限公司 | Portable wide angle optical is without thermalization LONG WAVE INFRARED camera lens |
| CN109491052A (en) * | 2018-12-28 | 2019-03-19 | 福建福光天瞳光学有限公司 | A kind of 17mm high-resolution infrared lens and its assembly method |
-
2017
- 2017-09-29 CN CN201721267658.4U patent/CN207611190U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526154A (en) * | 2017-09-29 | 2017-12-29 | 福建福光天瞳光学有限公司 | Portable wide angle optical is without thermalization LONG WAVE INFRARED camera lens |
| CN109491052A (en) * | 2018-12-28 | 2019-03-19 | 福建福光天瞳光学有限公司 | A kind of 17mm high-resolution infrared lens and its assembly method |
| CN109491052B (en) * | 2018-12-28 | 2024-03-05 | 福建福光天瞳光学有限公司 | 17mm high-resolution infrared lens and assembly method thereof |
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