CN105137565A - Uncooled long-wave infrared optical mechanical athermalizing lens and compensation adjustment method thereof - Google Patents
Uncooled long-wave infrared optical mechanical athermalizing lens and compensation adjustment method thereof Download PDFInfo
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- CN105137565A CN105137565A CN201510655548.4A CN201510655548A CN105137565A CN 105137565 A CN105137565 A CN 105137565A CN 201510655548 A CN201510655548 A CN 201510655548A CN 105137565 A CN105137565 A CN 105137565A
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Abstract
The invention relates to an uncooled long-wave infrared optical mechanical athermalizing lens. The optical system of the lens is provided with a front lens group A with negative focal power and a back lens group B with positive focal power which are arranged in turn along an incident direction of light rays from the left to the right. A diaphragm is arranged between the front group A and the back group B. The front group A comprises a crescent lens A-1 and a negative crescent lens A-2 which are arranged from the left to the right in turn. The back group B comprises a biconvex lens B-1. Optical compensation is realized via an optical mechanical hybrid athermalizing technology. A telescoping mechanism group performs telescoping via the principle of thermal expansion and cold contraction. The front group moves, positions of the back group and a sleeve are relatively fixed, and displacement amount generated by the front group is compensated by a compensation elastic sheet after the front group moves. System distortion is relatively low, lens concentricity, precision and axial position are accurate, and the structure of the lens is enabled to be compact and beautiful to the greatest extent.
Description
Technical field
The present invention relates to optical camera lens device technical field, particularly a kind of non-brake method LONG WAVE INFRARED optical-mechanical 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 non-brake method LONG WAVE INFRARED optical-mechanical without thermalization camera lens and Compensation Regulation method thereof.
Technical scheme of the present invention is, a kind of non-brake method LONG WAVE INFRARED optical-mechanical 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, be provided with light hurdle between described front group of A and rear group of B, before described, group A comprises the crescent lens A-1 set gradually from left to right, negative crescent lens A-2; Described rear group of B comprises biconvex lens B-1.
Further, the airspace before described in group A between crescent lens A-1 and negative crescent lens A-2 is 0.65mm, and the airspace between described front group of A and rear group of B is 13.8mm.
Further, the physical construction of described camera lens comprises sleeve, is positioned at front group of sleeve inner, rear group, described front group comprises front 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 rear group comprises rear main cylinder, described negative crescent lens A-2 and biconvex lens B-1 is installed on rear main cylinder, BC spacer ring is provided with, the described rear group of rear trim ring also comprised for the eyeglass that is tightened between described negative crescent lens A-2 and biconvex lens B-1.
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 surface of contact between described front main cylinder and sleeve is provided with the compensation shell fragment for compensating the displacement that front group occurs because of expanding with heat and contract with cold of telescoping mechanism group, described rear group relative with the position between sleeve fixing.
Further; the outside of described sleeve is also arranged with outer cover; described outer cover is provided with the set screw for sleeve fine setting; also be provided with the ridge for coordinating with video camera; O type circle A is provided with between described outer cover and sleeve; be provided with O type circle B between described sleeve and front main cylinder, the end face of described outer cover is also provided with for the protection of Jing Gai before eyeglass.
Non-brake method LONG WAVE INFRARED optical-mechanical, 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 rear group relative with the position between sleeve 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: the present invention realizes optical compensation by optical-mechanical mixing without thermalization technology, telescoping mechanism group is stretched by the principle of expanding with heat and contract with cold, front group is subjected to displacement, rear group relative with the position between sleeve fixing, front group be subjected to displacement after, compensate shell fragment compensate before group produce displacement; The distortion of system is less, and below 1%, this system has had better control relative to old structural aberration; 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; When structural design, both the accurate of the concentricity of camera lens, precision and axial location had been ensured, make 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; When optical design, carry out aberration correction and balance to the wide spectral ranges of 8 ~ 12 μm, make 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.
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; A-2 bears crescent lens A-2; B-1 biconvex lens B-1; Jing Gai before 1-; 2-outer cover; 3-sleeve; 4-O type circle A; 5-O type circle B; 6-set screw; 7-compensates shell fragment; 8-extension sleeve one; 9-fixture; 10-extension sleeve two; Trim ring before 11-; Main cylinder before 12-; Main cylinder after 13-; 14-BC spacer ring; Trim ring after 15-; 16-light hurdle.
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 non-brake method LONG WAVE INFRARED optical-mechanical 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, be provided with light hurdle 16 between described front group of A and rear group of B, before described, group A comprises the crescent lens A-1 set gradually from left to right, negative crescent lens A-2; Described rear group of B comprises biconvex lens B-1.
In the present embodiment, the airspace before described in group A between crescent lens A-1 and negative crescent lens A-2 is 0.65mm, and the airspace between described front group of A and rear group of B is 13.8mm.
In the present embodiment, the physical construction of described camera lens comprises sleeve 3, is positioned at front group of sleeve inner, rear group, described front group comprises front main cylinder 12, described crescent lens A-1 is arranged on front main cylinder, the premenstrual trim ring 11 of described crescent lens A-1 screws and is fixed, described rear group comprises rear main cylinder 13, described negative crescent lens A-2 and biconvex lens B-1 is installed on rear main cylinder, BC spacer ring 14 is provided with, the described rear group of rear trim ring 15 also comprised for the eyeglass that is tightened between described negative crescent lens A-2 and biconvex lens B-1.
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 9, extension sleeve 2 10.
In the present embodiment, the surface of contact between described front main cylinder and sleeve is provided with the compensation shell fragment 7 for compensating the displacement that front group occurs because of expanding with heat and contract with cold of telescoping mechanism group, described rear group relative with the position between sleeve fixing.
In the present embodiment; the outside of described sleeve is also arranged with outer cover 2; described outer cover is provided with the set screw 6 for sleeve fine setting; also be provided with the ridge for coordinating with video camera; O type circle A(4 is provided with) between described outer cover and sleeve; O type circle B(5 is provided with between described sleeve and front main cylinder), the end face of described outer cover is also provided with for the protection of mirror lid 1 before eyeglass.
In the present embodiment, the optical system be made up of above-mentioned lens set reaches following optical index:
1. focal length: f '=25mm;
2. relative aperture F:1.0;
3. field angle: 2W >=28 °;
4. resolution: can be adaptive with 640*51217 μm of detector video camera;
5. light path overall length ∑≤37.7mm, optics rear cut-off distance l ' >=10.4mm;
6. be suitable for spectral line scope: 8 μm ~ 12 μm.
Non-brake method LONG WAVE INFRARED optical-mechanical, 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 rear group relative with the position between sleeve fixing;
(2) front group be subjected to displacement after, compensate shell fragment compensate before group produce displacement.
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 (7)
1. a non-brake method LONG WAVE INFRARED optical-mechanical 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, be provided with light hurdle between described front group of A and rear group of B, before described, group A comprises the crescent lens A-1 set gradually from left to right, negative crescent lens A-2; Described rear group of B comprises biconvex lens B-1.
2. non-brake method LONG WAVE INFRARED optical-mechanical according to claim 1 is without thermalization camera lens, it is characterized in that: the airspace before described in group A between crescent lens A-1 and negative crescent lens A-2 is 0.65mm, and the airspace between described front group of A and rear group of B is 13.8mm.
3. non-brake method LONG WAVE INFRARED optical-mechanical according to claim 2 is without thermalization camera lens, it is characterized in that: the physical construction of described camera lens comprises sleeve, be positioned at front group of sleeve inner, rear group, described front group comprises front 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 rear group comprises rear main cylinder, described negative crescent lens A-2 and biconvex lens B-1 is installed on rear main cylinder, BC spacer ring is provided with between described negative crescent lens A-2 and biconvex lens B-1, the described rear group of rear trim ring also comprised for the eyeglass that is tightened.
4. non-brake method LONG WAVE INFRARED optical-mechanical 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. non-brake method LONG WAVE INFRARED optical-mechanical according to claim 4 is without thermalization camera lens, it is characterized in that: the surface of contact between described front main cylinder and sleeve is provided with the compensation shell fragment for compensating the displacement that front group occurs because of expanding with heat and contract with cold of telescoping mechanism group, described rear group relative with the position between sleeve fixing.
6. non-brake method LONG WAVE INFRARED optical-mechanical according to claim 5 is without thermalization camera lens; it is characterized in that: the outside of described sleeve is also arranged with outer cover; described outer cover is provided with the set screw for sleeve fine setting; also be provided with the ridge for coordinating with video camera; O type circle A is provided with between described outer cover and sleeve; be provided with O type circle B between described sleeve and front main cylinder, the end face of described outer cover is also provided with for the protection of Jing Gai before eyeglass.
7. non-brake method LONG WAVE INFRARED optical-mechanical 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 rear group relative with the position between sleeve fixing;
(2) front group be subjected to displacement after, compensate shell fragment compensate before group produce displacement.
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| CN201510655548.4A CN105137565B (en) | 2015-10-12 | 2015-10-12 | Non-brake method LONG WAVE INFRARED optical-mechanical is without thermalization camera lens and its compensation adjustment method |
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| CN201510655548.4A CN105137565B (en) | 2015-10-12 | 2015-10-12 | Non-brake method LONG WAVE INFRARED optical-mechanical is without thermalization camera lens and its compensation adjustment method |
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| CN105137565A true CN105137565A (en) | 2015-12-09 |
| CN105137565B CN105137565B (en) | 2017-07-14 |
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| CN105388578A (en) * | 2015-12-25 | 2016-03-09 | 福建福光股份有限公司 | Long-wave infrared optical-mechanical athermalized lens and compensation adjusting method thereof |
| CN105388577A (en) * | 2015-12-25 | 2016-03-09 | 福建福光股份有限公司 | Long-wave infrared mechanical passive type athermalized lens and compensation adjusting method thereof |
| CN105467549A (en) * | 2016-01-29 | 2016-04-06 | 福建福光股份有限公司 | F5mm large relative aperture mechanical passive athermalization lens and compensation adjusting method thereof |
| CN105487193A (en) * | 2016-01-29 | 2016-04-13 | 福建福光股份有限公司 | F19mm large relative aperture mechanical passive type athermalized lens and compensation adjusting method |
| 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 |
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| CN106443941A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | F20mm mechanical passive athermalizing long wave infrared prime lens and focusing method thereof |
| CN106443988A (en) * | 2016-12-16 | 2017-02-22 | 福建福光股份有限公司 | Airborne lightweight 50 mm long-wave infrared prime lens |
| CN106646813A (en) * | 2016-12-16 | 2017-05-10 | 福建福光天瞳光学有限公司 | Precision electric focusing type uncooled long-wave infrared lens and manufacturing method thereof |
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| CN107193104A (en) * | 2017-07-12 | 2017-09-22 | 福建福光股份有限公司 | Long focal length optical passive type is without thermalization infrared lens |
| CN109491058A (en) * | 2018-12-29 | 2019-03-19 | 福建福光天瞳光学有限公司 | A kind of f50mm high transmittance optics is without thermalization camera lens and its assembly method |
| CN113985559A (en) * | 2021-10-27 | 2022-01-28 | 河南平原光电有限公司 | Wide-spectrum long-focus high-resolution lens and adjustment method |
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| CN105388577A (en) * | 2015-12-25 | 2016-03-09 | 福建福光股份有限公司 | Long-wave infrared mechanical passive type athermalized lens and compensation adjusting method thereof |
| CN105388578A (en) * | 2015-12-25 | 2016-03-09 | 福建福光股份有限公司 | Long-wave infrared optical-mechanical athermalized lens and compensation adjusting method thereof |
| CN105467549A (en) * | 2016-01-29 | 2016-04-06 | 福建福光股份有限公司 | F5mm large relative aperture mechanical passive athermalization lens and compensation adjusting method thereof |
| CN105487193A (en) * | 2016-01-29 | 2016-04-13 | 福建福光股份有限公司 | F19mm large relative aperture mechanical passive type athermalized lens and compensation adjusting method |
| 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 |
| 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 |
| 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 |
| 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 |
| CN106443988B (en) * | 2016-12-16 | 2018-10-02 | 福建福光股份有限公司 | Airborne light-type 50mm LONG WAVE INFRARED tight shots |
| CN106646813A (en) * | 2016-12-16 | 2017-05-10 | 福建福光天瞳光学有限公司 | Precision electric focusing type uncooled long-wave infrared lens and manufacturing method thereof |
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| CN106443988A (en) * | 2016-12-16 | 2017-02-22 | 福建福光股份有限公司 | Airborne lightweight 50 mm long-wave infrared prime lens |
| CN106443941B (en) * | 2016-12-16 | 2019-01-29 | 福建福光天瞳光学有限公司 | F20mm machinery is passively without thermalization LONG WAVE INFRARED tight shot and its focus adjustment method |
| CN106873144A (en) * | 2017-04-17 | 2017-06-20 | 中国科学院国家天文台南京天文光学技术研究所 | For the floating type reverse compensation device of telescope secondary mirror under Complex Temperature environment |
| CN106842485A (en) * | 2017-04-17 | 2017-06-13 | 福建福光天瞳光学有限公司 | The electronic whole group focusing type non-brake method camera lens of three-chip type far infrared |
| CN106842485B (en) * | 2017-04-17 | 2023-08-18 | 福建福光天瞳光学有限公司 | Three-piece type far infrared electric whole group focusing type non-refrigeration lens |
| CN107193104A (en) * | 2017-07-12 | 2017-09-22 | 福建福光股份有限公司 | Long focal length optical passive type is without thermalization infrared lens |
| CN109491058A (en) * | 2018-12-29 | 2019-03-19 | 福建福光天瞳光学有限公司 | A kind of f50mm high transmittance optics is without thermalization camera lens and its assembly method |
| CN109491058B (en) * | 2018-12-29 | 2023-12-08 | 福建福光天瞳光学有限公司 | F50mm high-transmittance optical athermalized lens and assembly method thereof |
| CN113985559A (en) * | 2021-10-27 | 2022-01-28 | 河南平原光电有限公司 | Wide-spectrum long-focus high-resolution lens and adjustment method |
| CN113985559B (en) * | 2021-10-27 | 2023-08-22 | 河南平原光电有限公司 | Wide-spectrum long-focal-length high-resolution lens and adjustment method |
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