CN105388577A - Long-wave infrared mechanical passive type athermalized lens and compensation adjusting method thereof - Google Patents
Long-wave infrared mechanical passive type athermalized lens and compensation adjusting method thereof Download PDFInfo
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- CN105388577A CN105388577A CN201510984662.1A CN201510984662A CN105388577A CN 105388577 A CN105388577 A CN 105388577A CN 201510984662 A CN201510984662 A CN 201510984662A CN 105388577 A CN105388577 A CN 105388577A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
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- Optics & Photonics (AREA)
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Abstract
The invention relates to a long-wave infrared mechanical passive type athermalized lens. An optical system of the lens sequentially includes, along the incident direction of light from left to right, a lens group front group A with negative focal power and a lens group rear group B with positive focal power. The front group A comprises a crescent lens A-1. The rear group B comprises a concave crescent lens B-1 and a crescent lens B-2 in sequence from left to right. The long-wave infrared mechanical passive type athermalized lens has the advantages of relative large aperture, IP67 waterproof and dustproof performance, low distortion, athermalized compensation, etc. Through the characteristic that material expends with heat and contracts with cold and also through applications of compensation elastic pieces, an athermalizized design structure is simpler, the structure of an entire product is smaller and lighter, the steady imaging of an optical axis is clearer and high in reliability, the requirement of users for the imaging performance of products is met, and the lens is more convenient to use by users in terms of structure.
Description
Technical field
The present invention relates to optical camera lens device technical field, particularly a kind of LONG WAVE INFRARED machinery passive type is without thermalization camera lens and Compensation Regulation method thereof.
Background technology
Along with the fast development of science and technology, the development of uncooled detector technology and increasingly mature, LWIR Uncooled Optical System is all widely applied in military and civilian field.Because infrared optical material and mechanical material can produce thermal deformation when temperature variation, therefore the acute variation of working temperature can cause that the focal length variations of optical system, image planes are elegant, degradation impact under image quality.In order to eliminate or reduce the impact of temperature variation on optical system imaging, corresponding compensation technique must be adopted, make optical system keep focal length constant in a larger temperature range, guarantee the good of image quality.
Summary of the invention
The object of the invention is for above weak point, provide a kind of LONG WAVE INFRARED machinery passive type without thermalization camera lens and Compensation Regulation method thereof.
Technical scheme of the present invention is, a kind of LONG WAVE INFRARED machinery passive type is without thermalization camera lens, in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, and before described, group A comprises the crescent lens A-1 set gradually from left to right; Described rear group of B comprises negative crescent lens B-1, crescent lens B-2.
Further, in described rear group of B, negative airspace between crescent lens B-1 and crescent lens B-2 is 2.9mm, and the airspace between described front group of A and rear group of B is 4.9mm.
Further, the physical construction of described camera lens comprises front group, rear group, described front group comprises front main cylinder, described rear group comprises rear main cylinder, described crescent lens A-1 is arranged on front main cylinder, the premenstrual trim ring of described crescent lens A-1 screws and is fixed, described negative crescent lens B-1 and crescent lens B-2 is installed on rear main cylinder, be provided with BC spacer ring between described negative crescent lens B-1 and crescent lens B-2, described negative crescent lens B-1 and crescent lens B-2 through after trim ring screw and be fixed.
Further, be provided with between described front main cylinder and rear main cylinder and carry out the telescoping mechanism group of stretching for position assurance distance by the principle of expanding with heat and contract with cold, described telescoping mechanism group comprises extension sleeve one, fixture, extension sleeve two.
Further, the outside of described front main cylinder is also arranged with outer cover, and be provided with the compensation shell fragment for compensate for displacement amount between described outer cover and front main cylinder, described outer cover seals through O-ring seal.
LONG WAVE INFRARED machinery passive type, without a Compensation Regulation method for thermalization camera lens, comprises the following steps:
(1) telescoping mechanism group is stretched by the principle of expanding with heat and contract with cold, and front group is subjected to displacement, and the position of rear group is relatively fixing;
(2) front group be subjected to displacement after, compensate shell fragment compensate before group produce displacement.
Compared with prior art, the present invention has following beneficial effect: when optical design, carries out aberration correction and balance to the wide spectral ranges of 8 ~ 12 μm, makes camera lens all have excellent picture element at wide spectral range, achieve wide spectral confocal, such camera lens can blur-free imaging at middle long-wave limit; Select the optical glass material of high refraction, low dispersion, by designing and optimizing, correct the various aberrations of optical lens, make camera lens realize the advantages such as high resolving power, object lens of large relative aperture, low distortion; Distort less, below 1%, had better control relative to old structural aberration; When structural design, both ensured the accurate of the concentricity of camera lens, precision and axial location, made again the compact conformation of camera lens, attractive in appearance as far as possible.By the characteristic of expanding with heat and contract with cold of material, achieve the imaging performance of the air in different temperatures situation between eyeglass apart from change adjustment optical system, it is mechanical passive without thermalization to realize.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Fig. 1 is the optical system schematic diagram of this invention;
Fig. 2 is the physical construction schematic diagram of this invention;
In figure:
Group A before A-; B is organized after B-; A-1 crescent lens A-1; B-1 bears crescent lens B-1; B-2 crescent lens B-2; Main cylinder before 1-; Main cylinder after 2-; Trim ring before 3-; 4-BC spacer ring; Trim ring after 5-; 6-extension sleeve one; 7-fixture; 8-extension sleeve two; 9-outer cover; 10-compensates shell fragment; 11-O-ring seal.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Fig. 1 ~ 2, a kind of LONG WAVE INFRARED machinery passive type is without thermalization camera lens, in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, and before described, group A comprises the crescent lens A-1 set gradually from left to right; Described rear group of B comprises negative crescent lens B-1, crescent lens B-2.
In the present embodiment, in described rear group of B, negative airspace between crescent lens B-1 and crescent lens B-2 is 2.9mm, and the airspace between described front group of A and rear group of B is 4.9mm.
In the present embodiment, the physical construction of described camera lens comprises front group, rear group, described front group comprises front main cylinder 1, described rear group comprises rear main cylinder 2, described crescent lens A-1 is arranged on front main cylinder, the premenstrual trim ring 3 of described crescent lens A-1 screws and is fixed, described negative crescent lens B-1 and crescent lens B-2 is installed on rear main cylinder, be provided with BC spacer ring 4 between described negative crescent lens B-1 and crescent lens B-2, described negative crescent lens B-1 and crescent lens B-2 through after trim ring 5 screw and be fixed.
In the present embodiment, be provided with between described front main cylinder and rear main cylinder and carry out the telescoping mechanism group of stretching for position assurance distance by the principle of expanding with heat and contract with cold, described telescoping mechanism group comprises extension sleeve 1, fixture 7, extension sleeve 28.
In the present embodiment, the outside of described front main cylinder is also arranged with outer cover 9, be provided with the compensation shell fragment 10 for compensate for displacement amount between described outer cover and front main cylinder, described outer cover seals through O-ring seal 11, and the ridge of enclosure design M34X0.75-6g and video camera coordinate.
LONG WAVE INFRARED machinery passive type, without a Compensation Regulation method for thermalization camera lens, comprises the following steps:
(1) telescoping mechanism group is stretched by the principle of expanding with heat and contract with cold, and front group is subjected to displacement, and the position of rear group is relatively fixing;
(2) front group be subjected to displacement after, compensate shell fragment compensate before group produce displacement.
In the present embodiment, the optical system be made up of above-mentioned lens set reaches following optical index:
1) focal length: f '=13mm;
2) relative aperture F:1.1;
3) field angle: 2w >=56 °;
4) resolution: can be adaptive with 640*51217 μm of detector video camera;
5) light path overall length ∑≤26.8mm, optics rear cut-off distance l ' >=17.5mm;
6) spectral line scope is suitable for: 8 μm ~ 12 μm;
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a LONG WAVE INFRARED machinery passive type is without thermalization camera lens, it is characterized in that: in the optical system of described camera lens, along light, incident direction is provided with focal power successively is from left to right that to organize A and focal power before negative lens set be organize B after positive lens set, and before described, group A comprises the crescent lens A-1 set gradually from left to right; Described rear group of B comprises negative crescent lens B-1, crescent lens B-2.
2. LONG WAVE INFRARED machinery passive type according to claim 1 is without thermalization camera lens, it is characterized in that: in described rear group of B, negative airspace between crescent lens B-1 and crescent lens B-2 is 2.9mm, and the airspace between described front group of A and rear group of B is 4.9mm.
3. LONG WAVE INFRARED machinery passive type according to claim 2 is without thermalization camera lens, it is characterized in that: the physical construction of described camera lens comprises front group, rear group, described front group comprises front main cylinder, described rear group comprises rear main cylinder, described crescent lens A-1 is arranged on front main cylinder, the premenstrual trim ring of described crescent lens A-1 screws and is fixed, described negative crescent lens B-1 and crescent lens B-2 is installed on rear main cylinder, BC spacer ring is provided with between described negative crescent lens B-1 and crescent lens B-2, described negative crescent lens B-1 and crescent lens B-2 through after trim ring screw and be fixed.
4. LONG WAVE INFRARED machinery passive type according to claim 3 is without thermalization camera lens, it is characterized in that: be provided with between described front main cylinder and rear main cylinder and carry out the telescoping mechanism group of stretching for position assurance distance by the principle of expanding with heat and contract with cold, described telescoping mechanism group comprises extension sleeve one, fixture, extension sleeve two.
5. LONG WAVE INFRARED machinery passive type according to claim 3 is without thermalization camera lens, it is characterized in that: the outside of described front main cylinder is also arranged with outer cover, be provided with the compensation shell fragment for compensate for displacement amount between described outer cover and front main cylinder, described outer cover seals through O-ring seal.
6. LONG WAVE INFRARED machinery passive type is without a Compensation Regulation method for thermalization camera lens, it is characterized in that, comprises the following steps:
(1) telescoping mechanism group is stretched by the principle of expanding with heat and contract with cold, and front group is subjected to displacement, and the position of rear group is relatively fixing;
(2) front group be subjected to displacement after, compensate shell fragment compensate before group produce displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984662.1A CN105388577B (en) | 2015-12-25 | 2015-12-25 | LONG WAVE INFRARED machinery passive type is without thermalization camera lens and its compensation adjustment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510984662.1A CN105388577B (en) | 2015-12-25 | 2015-12-25 | LONG WAVE INFRARED machinery passive type is without thermalization camera lens and its compensation adjustment method |
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| CN105388577A true CN105388577A (en) | 2016-03-09 |
| CN105388577B CN105388577B (en) | 2017-10-03 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094174A (en) * | 2016-08-26 | 2016-11-09 | 福建福光天瞳光学有限公司 | Far infrared long wave dolly-out,s dolly-back high mist transmitting without transconversion into heat camera lens and preparation method thereof |
| CN106094156A (en) * | 2016-08-17 | 2016-11-09 | 福建福光天瞳光学有限公司 | F19mm vehicle-mounted far infrared machinery is without transconversion into heat camera lens |
| CN106125251A (en) * | 2016-08-30 | 2016-11-16 | 福建福光天瞳光学有限公司 | Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof |
| CN106125264A (en) * | 2016-08-29 | 2016-11-16 | 福建福光天瞳光学有限公司 | The ultra-high sensitive degree type medium wave infrared camera lens without transconversion into heat of refrigeration and method of work thereof |
| CN106125249A (en) * | 2016-08-22 | 2016-11-16 | 福建福光天瞳光学有限公司 | High-resolution non-refrigeration type infrared long wave short-focus lens and installation method thereof |
| CN106154505A (en) * | 2016-08-22 | 2016-11-23 | 福建福光天瞳光学有限公司 | A kind of LONG WAVE INFRARED machinery passive type is without transconversion into heat on-vehicle lens and installation method thereof |
| CN106443982A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | Standard optical athermalization lens and making method thereof |
| CN106526815A (en) * | 2016-12-16 | 2017-03-22 | 福建福光天瞳光学有限公司 | Noncontact long wave infrared real-time temperature measuring lens and working method thereof |
| CN106646811A (en) * | 2016-12-16 | 2017-05-10 | 福建福光天瞳光学有限公司 | Portable long wave infrared temperature measuring lens and working method thereof |
| CN106707466A (en) * | 2016-12-16 | 2017-05-24 | 福建福光股份有限公司 | F11.5 mm machinery passive type athermal lens |
| CN109270653A (en) * | 2017-07-18 | 2019-01-25 | 宁波舜宇车载光学技术有限公司 | Lens module and its encapsulating method |
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| CN205317998U (en) * | 2015-12-25 | 2016-06-15 | 福建福光股份有限公司 | Long wave infrared machinery passive form does not have camera lens of heating |
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| JP2013061548A (en) * | 2011-09-14 | 2013-04-04 | Canon Inc | Imaging optical system and optical instrument having refraction index distribution type lens |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094156A (en) * | 2016-08-17 | 2016-11-09 | 福建福光天瞳光学有限公司 | F19mm vehicle-mounted far infrared machinery is without transconversion into heat camera lens |
| CN106125249A (en) * | 2016-08-22 | 2016-11-16 | 福建福光天瞳光学有限公司 | High-resolution non-refrigeration type infrared long wave short-focus lens and installation method thereof |
| CN106154505A (en) * | 2016-08-22 | 2016-11-23 | 福建福光天瞳光学有限公司 | A kind of LONG WAVE INFRARED machinery passive type is without transconversion into heat on-vehicle lens and installation method thereof |
| CN106094174A (en) * | 2016-08-26 | 2016-11-09 | 福建福光天瞳光学有限公司 | Far infrared long wave dolly-out,s dolly-back high mist transmitting without transconversion into heat camera lens and preparation method thereof |
| CN106125264A (en) * | 2016-08-29 | 2016-11-16 | 福建福光天瞳光学有限公司 | The ultra-high sensitive degree type medium wave infrared camera lens without transconversion into heat of refrigeration and method of work thereof |
| CN106125264B (en) * | 2016-08-29 | 2019-01-29 | 福建福光天瞳光学有限公司 | The infrared no thermalization camera lens of ultra-high sensitive degree type medium wave refrigeration and its working method |
| CN106125251A (en) * | 2016-08-30 | 2016-11-16 | 福建福光天瞳光学有限公司 | Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof |
| CN106443982A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | Standard optical athermalization lens and making method thereof |
| CN106526815A (en) * | 2016-12-16 | 2017-03-22 | 福建福光天瞳光学有限公司 | Noncontact long wave infrared real-time temperature measuring lens and working method thereof |
| CN106646811A (en) * | 2016-12-16 | 2017-05-10 | 福建福光天瞳光学有限公司 | Portable long wave infrared temperature measuring lens and working method thereof |
| CN106707466A (en) * | 2016-12-16 | 2017-05-24 | 福建福光股份有限公司 | F11.5 mm machinery passive type athermal lens |
| CN109270653A (en) * | 2017-07-18 | 2019-01-25 | 宁波舜宇车载光学技术有限公司 | Lens module and its encapsulating method |
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