CN106125251A - Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof - Google Patents
Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof Download PDFInfo
- Publication number
- CN106125251A CN106125251A CN201610759665.XA CN201610759665A CN106125251A CN 106125251 A CN106125251 A CN 106125251A CN 201610759665 A CN201610759665 A CN 201610759665A CN 106125251 A CN106125251 A CN 106125251A
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- Prior art keywords
- lens barrel
- lens
- light focus
- focus lens
- transconversion
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Classifications
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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
-
- 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
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
Abstract
The present invention relates to a kind of fixed non-brake method LONG WAVE INFRARED mixed type without transconversion into heat camera lens and installation method thereof, the one front lens barrel including front and back coordinating elastic connection and rear lens barrel, and the positive light focus lens A being set in turn in from front to back in front lens barrel along light direction and negative light focus lens B and the positive light zoom lens C that is arranged in rear lens barrel；Described front lens barrel lateral wall is circumferentially arranged with an annular groove, an expansion ring it is arranged with in described groove, described front lens barrel rear end coordinates elasticity to be connected with front end one elastomeric pad of rear lens barrel, described front lens barrel and rear lens barrel are all sheathed in an outer housing, described front lens barrel is flexibly connected with described outer housing, and described rear lens barrel is fixed on rear side in described outer housing.The beneficial effects of the present invention is: simple in construction, compact dimensions, lightweight, good reliability, the difference of thermal characteristics between Appropriate application different materials, by negative power reasonably combined, positive, it is achieved camera lens keeps image planes stable.
Description
Technical field
The present invention relates to monitor safety-security area, particularly relate to a kind of fixed non-brake method LONG WAVE INFRARED mixed type without transconversion into heat mirror
Head and installation method thereof.
Background technology
LWIR Uncooled Optical System is all widely used in dual-use field, because infrared lens
There is good in anti-interference performance；Night, operating distance was remote；Penetrate flue dust, haze ability strong；Can round-the-clock, round-the-clock work；Have
The advantages such as the ability of the observation of multiple target panorama, tracking and target recognition ability and the stealth of good anti-target, so to optical system
The image quality of system proposes the highest requirement.But owing to infrared optical material and mechanical material exist certain thermal effect
Should, optical system can be produced serious influence by the acute variation of operating temperature, such as, cause the drift of focal length variations, image planes, become
As Quality Down etc..Therefore, in order to adapt to varying environment temperature, it is desirable to infrared lens has certain temperature self-adaptation ability；
It addition, the most most lens construction is complicated, difficulty of processing and relatively costly, therefore it is also required to camera lens and there is features simple structure
Workability, practical by force, one has been adapted and has been no need for artificially adjusting rear cut-off distance.
Summary of the invention
It is an object of the invention in order to for above not enough, it is provided that a kind of fixed non-brake method LONG WAVE INFRARED mixed type
Camera lens without transconversion into heat and installation method thereof, reduce the variations in temperature impact on lens imaging, keeps image planes stable.
The present invention solves the scheme that technical problem used: a kind of fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat
Camera lens, including front and back coordinating the front lens barrel of elastic connection and rear lens barrel, and sets gradually from front to back along light direction
Positive light focus lens A in front lens barrel and negative light focus lens B and the positive light zoom lens C being arranged in rear lens barrel；Described front lens barrel
Lateral wall, circumferentially arranged with an annular groove, is arranged with an expansion ring, described front lens barrel rear end and rear lens barrel in described groove
Front end one elastomeric pad coordinates elasticity to connect, and described front lens barrel and rear lens barrel are all sheathed in an outer housing, described front lens barrel with
Described outer housing is flexibly connected, and described rear lens barrel is fixed on rear side in described outer housing.
Further, the air clearance between described positive light focus lens A and negative light focus lens B is 3.11mm；Negative power
Air clearance between eyeglass B and positive light focus lens C is 14.17mm, and the optics overall length of described camera lens is 37.43mm.
Further, BC spacer ring closely it is provided with between described negative light focus lens B and positive light focus lens C.
Further, before the front end face of described positive light focus lens A and the rear end face of positive light focus lens C are also respectively provided with one
The medial wall of trim ring and rear trim ring, described front trim ring and rear trim ring corresponding and described front lens barrel and rear lens barrel respectively is fixing to be connected.
Further, the front end of described outer housing is closely flexibly connected with the cooperation of described front lens barrel through a sealing ring respectively.
Further, described positive light focus lens A and positive light focus lens C is germanium based material；Negative light focus lens B is sulfur system material
Material.
Further, a front also it is arranged with between lateral wall before and after the leading inside wall of described outer housing and front lens barrel
Circle.
The present invention also provides for a kind of fixed non-brake method LONG WAVE INFRARED mixed type as described above peace without transconversion into heat camera lens
Dress method, comprises the following steps:
Step S1: positive light focus lens A and negative light focus lens B is set in turn in front lens barrel from front to back along light direction
In, positive light focus lens C is arranged in rear lens barrel；
Step S2: BC spacer ring is closely arranged between negative light focus lens B and positive light focus lens C, by negative light focus lens B and positive light
Focus lens C is defined in specific apart from interior；
Step S3: carry out elastic connection by arranging an elastomeric pad between front lens barrel and rear lens barrel；
Step S4: front trim ring and rear trim ring are individually fixed in front lens barrel front end face and the rear end face of rear lens barrel, is respectively used to solid
Fixed positive light focus lens A and positive light focus lens C；
Step S5: through expansion ring sheathed with front lens barrel outside groove in；
Step S6: be sheathed on by outer housing outside front lens barrel and rear lens barrel, front lens barrel is movably set in external interior, rear lens barrel and outer housing
Fixing connection.
Compared with prior art, the present invention has a following beneficial effect: by the focal power of reasonable distribution eyeglass A, B and C,
Under different temperatures, optical material expands with heat and contract with cold so that lens curvature changes image planes drift, by different lens materials
Between change and expansion ring and elastomeric pad between bit shift compensation reduce the impact of temperature, it is achieved temperature self-adaptation
Without transconversion into heat, it is possible to keep image planes stable；It is extremely light and handy that the camera lens that the present invention provides achieves structure, installs simple and convenient, significantly
Reduce cost.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings patent of the present invention is further illustrated.
Fig. 1 is the light channel structure schematic diagram of the camera lens without transconversion into heat of the embodiment of the present invention.
Fig. 2 is the overall structure signal of the camera lens without transconversion into heat of the embodiment of the present invention.
In figure: trim ring before 1-；Back-up ring before 2-；3-expansion ring；Lens barrel before 4-；Lens barrel after 5-；Trim ring after 6-；7-sealing ring；
8-BC spacer ring；9-elastomeric pad；10-outer housing.
Detailed description of the invention
The present invention is further described with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in Fig. 1～2, the one fixed non-brake method LONG WAVE INFRARED mixed type of the present embodiment without transconversion into heat camera lens, including
Front and back coordinate front lens barrel 4 and the rear lens barrel 5 of elasticity connection, and be set in turn in front lens barrel from front to back along light direction
Positive light focus lens A in 4 and negative light focus lens B and the positive light zoom lens C being arranged in rear lens barrel 5；Described front lens barrel 4 lateral wall
Circumferentially arranged with an annular groove, in described groove, it is arranged with the front end of an expansion ring 3, described front lens barrel 4 rear end and rear lens barrel 5
Coordinating elastic connection through an elastomeric pad 9, described front lens barrel 4 and rear lens barrel 5 are all sheathed in an outer housing 10, described front lens barrel 4
Being flexibly connected with described outer housing 10, described rear lens barrel 5 is fixed on rear side in described outer housing 10.
From the foregoing, the beneficial effects of the present invention is: camera lens in ccd video camera with the use of, light is from front to back
Take in lens barrel by eyeglass A, then finally imaged in target surface by B eyeglass, C eyeglass.Use process by expansion ring 3 simultaneously
In expand with heat and contract with cold along with variations in temperature so that front lens barrel 4 moves forward and backward, by the elasticity between front lens barrel 4 and rear lens barrel 5
Pad 9 carries out bit shift compensation, and reducing temperature affects image planes drift, keeps image planes stable.
In the present embodiment, the air clearance between described positive light focus lens A and negative light focus lens B is 3.11mm；Negative light
Air clearance between power lens B and positive light focus lens C is 14.17mm, and the optics overall length of described camera lens is 37.43mm.
In the present embodiment, BC spacer ring 8 closely it is provided with between described negative light focus lens B and positive light focus lens C.
In the present embodiment, the front end face of described positive light focus lens A and the rear end face of positive light focus lens C are also respectively provided with
One front trim ring 1 and rear trim ring 6, described front trim ring 1 and rear trim ring 6 distinguish the most corresponding and described front lens barrel 4 and the medial wall of rear lens barrel 5
Fixing connection.The lens structure of the present embodiment is compact, with low cost, suitable for scale production.
In the present embodiment, the front end of described outer housing 10 coordinates tight activity through a sealing ring 7 with described front lens barrel 4 respectively
Connect.Designed by front lens barrel 4 and the i.e. bimirror cylinder band sealing ring 7 of rear lens barrel 5 and there is good sealing property；Set at lens construction
Meter can carry out Rigidity Calculation, suitably increase wall thickness, improve natural frequency, improve the vibration resistance of camera lens, it is ensured that camera lens light
The use requirement of system；Ensure the sealing property of camera lens.
In the present embodiment, described positive light focus lens A and positive light focus lens C is germanium based material；Negative light focus lens B is sulfur
Based material.The impact of temperature is preferably eliminated by different qualities lens materials.
In the present embodiment, also it is arranged with between lateral wall before and after the leading inside wall of described outer housing 10 and front lens barrel 4
Ring washer 22 before one.
The present invention also provides for a kind of fixed non-brake method LONG WAVE INFRARED mixed type as described above installation side without transconversion into heat camera lens
Method, comprises the following steps:
Step S1: positive light focus lens A and negative light focus lens B is set in turn in from front to back along light direction front lens barrel 4
In, positive light focus lens C is arranged in rear lens barrel 5；
Step S2: BC spacer ring 8 is closely arranged between negative light focus lens B and positive light focus lens C, by negative light focus lens B and just
Light focus lens C is defined in specific apart from interior；
Step S3: carry out elastic connection by arranging an elastomeric pad 9 between front lens barrel 4 and rear lens barrel 5；
Step S4: front trim ring 1 and rear trim ring 6 are individually fixed in front lens barrel 4 front end face and the rear end face of rear lens barrel 5, use respectively
In fixing positive light focus lens A and positive light focus lens C；
Step S5: through expansion ring 3 sheathed with front lens barrel 4 outside groove in；
Step S6: be sheathed on by outer housing 10 outside front lens barrel 4 and rear lens barrel 5, front lens barrel 4 is movably set in external interior, rear lens barrel 5
Fix with outer housing 10 and be connected.
In the present embodiment, the optical system being made up of above-mentioned eyeglass has reached following technical specification:
(1) service band: 8 μm-12 μm；
(2) focal length: f '=25mm；
(3) detector: LWIR Uncooled type 640 × 480,17 μm；
(4) angle of visual field: 31 °；
(5) relative aperture D/ f ': 1/1.0；
(6) optics volume: 49mm × 30.7mm(diameter × length).
In sum, the one fixed non-brake method LONG WAVE INFRARED mixed type that the present invention provides is without transconversion into heat camera lens and installation thereof
Method, simple in construction, compact dimensions, lightweight, good reliability, between Appropriate application different materials, the difference of thermal characteristics, passes through
Negative power reasonably combined, positive, it is achieved camera lens keeps image planes stable.
The object, technical solutions and advantages of the present invention are further described by above-listed preferred embodiment, are answered
It is understood by, the foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. a fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens, it is characterised in that include front and back coordinating elastic company
The front lens barrel connect and rear lens barrel, and the positive light focus lens A being set in turn in from front to back in front lens barrel along light direction
With negative light focus lens B and the positive light zoom lens C that is arranged in rear lens barrel；Described front lens barrel lateral wall is recessed circumferentially arranged with an annular
Groove, is arranged with an expansion ring in described groove, described front lens barrel rear end coordinates elasticity with front end one elastomeric pad of rear lens barrel
Connecting, described front lens barrel and rear lens barrel are all sheathed in an outer housing, and described front lens barrel is flexibly connected with described outer housing, described rear mirror
Cylinder is fixed on rear side in described outer housing.
Fixed non-brake method LONG WAVE INFRARED mixed type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that described
Positive air clearance between light focus lens A and negative light focus lens B is 3.11mm；Between minus power lens B and positive light focus lens C
Air clearance be 14.17mm, the optics overall length of described camera lens is 37.43mm.
Fixed non-brake method LONG WAVE INFRARED mixed type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that described
BC spacer ring closely it is provided with between negative light focus lens B and positive light focus lens C.
Fixed non-brake method LONG WAVE INFRARED mixed type the most according to claim 3 is without transconversion into heat camera lens, it is characterised in that described
The positive front end face of light focus lens A and the rear end face of positive light focus lens C are also respectively provided with a front trim ring and rear trim ring, described front pressure
Enclose be connected fixing with the medial wall of rear trim ring corresponding and described front lens barrel and rear lens barrel respectively.
Fixed non-brake method LONG WAVE INFRARED mixed type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that described
The front end of outer housing is closely flexibly connected with the cooperation of described front lens barrel through a sealing ring respectively.
Fixed non-brake method LONG WAVE INFRARED mixed type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that described
Positive light focus lens A and positive light focus lens C is germanium based material；Negative light focus lens B is sulfur based material.
Fixed non-brake method LONG WAVE INFRARED mixed type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that described
Back-up ring before being also arranged with one between lateral wall before and after the leading inside wall of outer housing and front lens barrel.
8. fixed non-brake method LONG WAVE INFRARED mixed type as claimed in claim 4 is without an installation method for transconversion into heat camera lens, its
It is characterised by, comprises the following steps:
Step S1: positive light focus lens A and negative light focus lens B is set in turn in front lens barrel from front to back along light direction
In, positive light focus lens C is arranged in rear lens barrel；
Step S2: BC spacer ring is closely arranged between negative light focus lens B and positive light focus lens C, by negative light focus lens B and positive light
Focus lens C is defined in specific apart from interior；
Step S3: carry out elastic connection by arranging an elastomeric pad between front lens barrel and rear lens barrel；
Step S4: front trim ring and rear trim ring are individually fixed in front lens barrel front end face and the rear end face of rear lens barrel, is respectively used to solid
Fixed positive light focus lens A and positive light focus lens C；
Step S5: through expansion ring sheathed with front lens barrel outside groove in；
Step S6: be sheathed on by outer housing outside front lens barrel and rear lens barrel, front lens barrel is movably set in external interior, rear lens barrel and outer housing
Fixing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610759665.XA CN106125251A (en) | 2016-08-30 | 2016-08-30 | Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610759665.XA CN106125251A (en) | 2016-08-30 | 2016-08-30 | Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN106125251A true CN106125251A (en) | 2016-11-16 |
Family
ID=57273045
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| CN201610759665.XA Pending CN106125251A (en) | 2016-08-30 | 2016-08-30 | Fixed non-brake method LONG WAVE INFRARED mixed type is without transconversion into heat camera lens and installation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106443942A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | F20 mm portable mechanical passive athermal infrared prime lens and using method thereof |
| CN106707455A (en) * | 2016-12-19 | 2017-05-24 | 福建福光天瞳光学有限公司 | Non-refrigerating far-infrared mechanical passive heat-free security lens and use method thereof |
| CN106896484A (en) * | 2017-04-20 | 2017-06-27 | 福建福光天瞳光学有限公司 | A kind of heavy caliber machinery is passive without the infrared telephoto lens of thermalization and its application method |
| CN108121021A (en) * | 2016-11-30 | 2018-06-05 | 豪威科技股份有限公司 | Without hot compound lens |
| CN110261982A (en) * | 2019-07-03 | 2019-09-20 | 福建福光天瞳光学有限公司 | Infrared lens and its assembly method with detachable-type sealed structure |
| CN111149034A (en) * | 2017-09-22 | 2020-05-12 | 富士胶片株式会社 | Lens unit |
| CN111338160A (en) * | 2018-12-19 | 2020-06-26 | 宁波舜宇车载光学技术有限公司 | Image pickup apparatus and temperature compensation method thereof |
| CN112394469A (en) * | 2020-12-01 | 2021-02-23 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
| CN113391417A (en) * | 2021-05-14 | 2021-09-14 | 中国科学院长春光学精密机械与物理研究所 | Optical element supporting structure |
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| 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 |
| CN206020777U (en) * | 2016-08-30 | 2017-03-15 | 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 |
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| CN105137565A (en) * | 2015-10-12 | 2015-12-09 | 福建福光股份有限公司 | Uncooled long-wave infrared optical mechanical athermalizing lens and compensation adjustment method thereof |
| CN205027954U (en) * | 2015-10-12 | 2016-02-10 | 福建福光股份有限公司 | Non - refrigeration long wave infrared optical -mechanical does not have camera lens of heating |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108121021B (en) * | 2016-11-30 | 2020-09-22 | 豪威科技股份有限公司 | Athermal compound lens |
| CN108121021A (en) * | 2016-11-30 | 2018-06-05 | 豪威科技股份有限公司 | Without hot compound lens |
| CN106443942A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | F20 mm portable mechanical passive athermal infrared prime lens and using method thereof |
| 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 |
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| CN106707455A (en) * | 2016-12-19 | 2017-05-24 | 福建福光天瞳光学有限公司 | Non-refrigerating far-infrared mechanical passive heat-free security lens and use method thereof |
| CN106896484A (en) * | 2017-04-20 | 2017-06-27 | 福建福光天瞳光学有限公司 | A kind of heavy caliber machinery is passive without the infrared telephoto lens of thermalization and its application method |
| CN106896484B (en) * | 2017-04-20 | 2022-05-27 | 福建福光天瞳光学有限公司 | Large-caliber mechanical passive athermal infrared telephoto lens and use method thereof |
| CN111149034B (en) * | 2017-09-22 | 2021-11-09 | 富士胶片株式会社 | Lens unit |
| CN111149034A (en) * | 2017-09-22 | 2020-05-12 | 富士胶片株式会社 | Lens unit |
| CN111338160A (en) * | 2018-12-19 | 2020-06-26 | 宁波舜宇车载光学技术有限公司 | Image pickup apparatus and temperature compensation method thereof |
| CN111338160B (en) * | 2018-12-19 | 2022-07-08 | 宁波舜宇车载光学技术有限公司 | Image pickup apparatus and temperature compensation method thereof |
| CN110261982A (en) * | 2019-07-03 | 2019-09-20 | 福建福光天瞳光学有限公司 | Infrared lens and its assembly method with detachable-type sealed structure |
| CN112394469A (en) * | 2020-12-01 | 2021-02-23 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
| CN112394469B (en) * | 2020-12-01 | 2023-03-10 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
| CN113391417A (en) * | 2021-05-14 | 2021-09-14 | 中国科学院长春光学精密机械与物理研究所 | Optical element supporting structure |
| CN113391417B (en) * | 2021-05-14 | 2022-09-20 | 中国科学院长春光学精密机械与物理研究所 | Optical element supporting structure |
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Application publication date: 20161116 |