CN106125263B - A kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens and its installation method - Google Patents
A kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens and its installation method Download PDFInfo
- Publication number
- CN106125263B CN106125263B CN201610698959.6A CN201610698959A CN106125263B CN 106125263 B CN106125263 B CN 106125263B CN 201610698959 A CN201610698959 A CN 201610698959A CN 106125263 B CN106125263 B CN 106125263B
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- lens
- lens barrel
- outer cover
- ring
- dolly
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- 238000009434 installation Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 7
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 15
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006049 ring expansion reaction Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
-
- 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
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
-
- 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
-
- 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
Abstract
The present invention relates to a kind of fixed type machinery of dolly-out,ing dolly-back passively without thermalization infrared lens, along light, incident direction is equipped with germanium window A, positive lens B and positive lens C successively from left to right in the optical system of the camera lens, airspace between the germanium window A and positive lens B is 0.83mm, and the airspace between the positive lens B and positive lens C is 44.97mm.The optical system structure of the fixed type machinery of dolly-out,ing dolly-back passively without thermalization infrared lens is simple, and lens construction length is short, small easy to carry, compact-sized.
Description
Technical field
The present invention relates to a kind of fixed type machinery of dolly-out,ing dolly-back passively without thermalization infrared lens and its installation method, belong to camera lens
Field.
Background technology
With the continuous development of uncooled detector technology and increasingly mature, LWIR Uncooled Optical System is in army
It is widely used with civil field, because infrared lens have good in anti-interference performance；Night operating distance is remote；It wears
Saturating flue dust, haze ability are strong；It can round-the-clock, round-the-clock work；With multiple target panorama observation, tracking and target identification ability and
The advantages that ability of good anti-target stealth, so the image quality to optical system proposes increasingly higher demands.But
Since infrared optical material and mechanical material are there are certain fuel factor, the acute variation of operating temperature can generate optical system
Serious influence, such as cause focal length variations, image planes drift, image quality decline etc..Therefore, in order to adapt to varying environment temperature
Degree, it is desirable that infrared lens have certain temperature self-adaptation ability；And under remote monitor usually due to apart from the problem of
Detected things is caused to be difficult to differentiate between, thus in the case that remote monitoring also want camera lens have high resolution mist transmitting it is strong,
The features such as aberration rate is low.However, most of lens construction is complicated on the market, difficulty of processing and cost are higher, and mist transmitting is poor, divides
Resolution is low, lens construction length is long, volume is big, since environment temperature is substantially close to so difficult especially when monitoring at night
In the form of distinguishing monitored things.
Invention content
The purpose of the present invention is being directed to more than shortcoming, a kind of fixed type machine of dolly-out,ing dolly-back reasonable in design is provided
Tool is passively without thermalization infrared lens and its installation method.
The technical scheme is that a kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens, the camera lens
In optical system along light from left to right incident direction be equipped with successively germanium window A, positive lens B and positive lens C, the germanium window A with just
Airspace between lens B is 0.83mm, and the airspace between the positive lens B and positive lens C is 44.97mm.
Further, the mechanical structure of the camera lens includes outer cover, and the outer cover is internally provided with preceding lens barrel and rear lens barrel,
The rear end of the preceding lens barrel is mutually spirally connected with the front end of rear lens barrel, and the premenstrual trim rings of positive lens B are mounted on the front end of preceding lens barrel,
The rear end of positive lens C lens barrels after trim ring is mounted on after.
Further, the germanium window A is mounted in the front inner wall of outer cover, and through the limited step in outer cover front inner wall
It is limited.
Further, preceding baffle ring is equipped between the preceding lens barrel and the inner wall of outer cover, the preceding baffle ring connects with outer cover screw thread
It connects, the fixing piece that can be moved forward and backward with respect to outer cover, the fixing piece is equipped between the inner wall of the preceding lens barrel, rear lens barrel and outer cover
Inner circumferential side be equipped with the first expansion ring, the front end of first expansion ring withstands on fixing piece rear end face, rear end withstands on rear lens barrel end
Face, the peripheral side of the fixing piece are equipped with the second expansion ring, and the rear end of second expansion ring withstands on fixing piece front end face, front end
Baffle ring end face before withstanding on, second expansion ring drive the first expansion ring to synchronize and move backward through fixing piece, the rear lens barrel
Shrapnel is equipped between rear end and the rear end face of outer cover.
Further, first expansion ring is made of plastics with the second expansion ring, and the shrapnel is made of metal.
A kind of installation method of fixed type machinery of dolly-out,ing dolly-back passively without thermalization infrared lens, comprises the steps of：
（1）Trim ring, positive lens C are put into rear lens barrel and are pressed after screwing in before first positive lens B is put into lens barrel and before screwing in
Circle, baffle ring, the first expansion ring, fixing piece, the second expansion ring before being then sequentially placed into preceding lens barrel, the front end of last rear lens barrel
The rear end of lens barrel before screw-in；
（2）Shrapnel is put into the rear end of rear lens barrel, camera lens whole group is put into outer cover, germanium window A is finally packed on outer cover,
Dispensing is cleaned again.
Compared with prior art, the invention has the advantages that：
（1）With high imaging resolution, high-penetration, the object of tiny temperature change can be captured；
（2）Compact-sized, cost of manufacture is cheap, suitable for scale production；
（3）It under the premise of guarantee is compact-sized, adopts a series of measures, improves camera lens vibration resistance, the ability of impact；
（4）It is simple in structure to avoid increasing cost and mirror using spacer ring in a manner that preceding lens barrel and rear lens barrel screw thread are to lock
Nose heave amount；
（5）Rigidity Calculation can be carried out in lens construction design, suitably increases wall thickness, improves intrinsic frequency, improves mirror
The vibration resistance of head ensures the requirement of system, ensures the sealing performance of camera lens.
Description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the optical system schematic diagram of the inventive embodiments；
Fig. 2 is the mechanical structure schematic diagram of the inventive embodiments；
In figure：
A- germanium windows A；B- positive lens B；C- positive lens C；1- outer covers；Lens barrel before 2-；Lens barrel after 3-；Trim ring before 4-；It is pressed after 5-
Circle；Baffle ring before 6-；7- fixing pieces；The first expansion rings of 8-；The second expansion rings of 9-；10- shrapnels；11- fixing piece rear end faces；12- consolidates
Determine part front end face.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Fig. 1~2, a kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens, the optical system of the camera lens
In system along light from left to right incident direction be equipped with successively germanium window A, positive lens B and positive lens C, the germanium window A and positive lens B it
Between airspace for 0.83mm, the airspace between the positive lens B and positive lens C is 44.97mm.
In the present embodiment, the mechanical structure of the camera lens includes outer cover 1, before being internally provided with of the outer cover lens barrel 2 with
Lens barrel 3 afterwards, the rear end of the preceding lens barrel are mutually spirally connected with the front end of rear lens barrel, and the premenstrual trim rings 4 of positive lens B are mounted on preceding mirror
The front end of cylinder, the rear end of positive lens C lens barrels after trim ring 5 is mounted on after.
In the present embodiment, the germanium window A is mounted in the front inner wall of outer cover, and through the limiting in outer cover front inner wall
Step is limited, the outer cover and detector（It is not drawn into attached drawing）It is threadedly coupled.
In the present embodiment, preceding baffle ring 6, the preceding baffle ring and outer cover spiral shell are equipped between the preceding lens barrel and the inner wall of outer cover
Line connects, and the fixing piece 7 that can be moved forward and backward with respect to outer cover is equipped between the inner wall of the preceding lens barrel, rear lens barrel and outer cover, described
The inner circumferential side of fixing piece is equipped with the first expansion ring 8, and the front end of first expansion ring withstands on fixing piece rear end face 11, rear end is withstood on
Lens barrel end face afterwards, the peripheral side of the fixing piece are equipped with the second expansion ring 9, before the rear end of second expansion ring withstands on fixing piece
End face 12, front end withstand on preceding baffle ring end face, and second expansion ring drives the first expansion ring to synchronize and moves backward through fixing piece, institute
It states and shrapnel 10 is equipped between the rear end of rear lens barrel and the rear end face of outer cover.
In the present embodiment, first expansion ring is made of plastics with the second expansion ring, and the shrapnel is made of metal,
The coefficient of expansion of first expansion ring and the second expansion ring is big, and the coefficient of expansion of the shrapnel is small, the preferred spring of shrapnel,
But not limited to this.
In embodiments of the present invention, using the difference between mechanical material thermal characteristics, pass through the combination of different characteristics material
The influence of temperature is eliminated, image quality is kept to stablize in wide range, realizes that the machinery of temperature self-adaptation without thermalization, makes infrared light
System can keep good image quality within the scope of a larger temperature；When environment temperature increases, due to just thoroughly
Mirror B and positive lens C is expanded simultaneously to be caused original focal plane to shift forward to cause to obscure, at this time second expansion ring
Expansion, the end of baffle ring is motionless before the second expansion ring is withstood, and rear end pushes fixing piece backward, and fixing piece pushes first to stretch again
Ring, the first expansion ring can also expand, and coordinate the promotion of fixing piece, make preceding lens barrel and rear lens barrel synchronous compression shrapnel, make positive lens B
With the air of both positive lens C between image planes away from becoming smaller, the focal plane to make up original biased forwards makes it be restored to room temperature shape
Clear picture under state.
A kind of installation method of fixed type machinery of dolly-out,ing dolly-back passively without thermalization infrared lens, comprises the steps of：
（1）Trim ring, positive lens C are put into rear lens barrel and are pressed after screwing in before first positive lens B is put into lens barrel and before screwing in
Circle, baffle ring, the first expansion ring, fixing piece, the second expansion ring before being then sequentially placed into preceding lens barrel, the front end of last rear lens barrel
The rear end of lens barrel before screw-in；
（2）Shrapnel is put into the rear end of rear lens barrel, camera lens whole group is put into outer cover, germanium window A is finally packed on outer cover,
Dispensing is cleaned again.
In the present embodiment, the optical system being made of above-mentioned lens set has reached following optical index：
（1）Service band：8μm-12μm；
（2）Focal length：f′=50mm；
（3）Detector：640 × 480,17 μm of LWIR Uncooled type；
（4）Field angle：16°；
（5）Relative aperture D/ f '：1/1.0；
（6）Optics volume：∅70mm×65.17mm（Diameter × length）.
The invention reside in distance, influence of the temperature to infrared lens is overcome, in fixed type machinery of dolly-out,ing dolly-back passively without thermalization
During infrared lens Design of Mechanical Structure, suitable machinery is selected according to the offset of the focal plane of camera lens in the case of varying environment
Structure and flexible ring material allow camera lens that can keep good imaging effect under -40 DEG C ~ 80 DEG C of camera lens, realize temperature certainly
The machinery of adaptation is passively without thermalization.In addition on the market complex, the required parts of the structure design of most of camera lens compared with
More, not only increasing manufacture cost also makes installation become complicated, and cost of labor greatly improves, this uses fixed design, keeps away
The trouble of secondary adjustment rear cut-off distance is exempted from, it is extremely light and handy to realize structure, and installation is simple and convenient, greatly reduces cost.
The present invention have the characteristics that no thermalization stability is strong, simple in structure, mist transmitting by force, dolly-out, dolly-back in the case of high resolution；
In structure design, the difference of the coefficient of thermal expansion between reasonable utilization different materials carries out temperature-compensating, realizes temperature self-adaptation
Mechanical structure without thermalization feature；Live note can be performed with LWIR Uncooled type 640*480,17 μm of detector adaptations
Record and safety monitoring task.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, answers
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (1)
1. a kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens, it is characterised in that：In the optical system of the camera lens
Along light, incident direction is equipped with germanium window A, positive lens B and positive lens C successively from left to right, between the germanium window A and positive lens B
Airspace is 0.83mm, and the airspace between the positive lens B and positive lens C is 44.97mm；The machinery knot of the camera lens
Structure includes outer cover, and the outer cover is internally provided with preceding lens barrel and rear lens barrel, the rear end of the preceding lens barrel and the front end phase of rear lens barrel
It is mutually spirally connected, the premenstrual trim rings of positive lens B are mounted on the front end of preceding lens barrel, positive lens C lens barrels after trim ring is mounted on after
Rear end；The germanium window A is mounted in the front inner wall of outer cover, and is limited through the limited step in outer cover front inner wall；
Preceding baffle ring is equipped between the preceding lens barrel and the inner wall of outer cover, the preceding baffle ring is threadedly coupled with outer cover, the preceding lens barrel, rear mirror
The fixing piece that can be moved forward and backward with respect to outer cover is equipped between cylinder and the inner wall of outer cover, the inner circumferential side of the fixing piece is stretched equipped with first
Contracting ring, the front end of first expansion ring withstands on fixing piece rear end face, rear end withstands on rear lens barrel end face, the periphery of the fixing piece
Side is equipped with the second expansion ring, and the rear end of second expansion ring withstands on fixing piece front end face, front end withstands on preceding baffle ring end face, described
Second expansion ring drives the first expansion ring to synchronize and move backward through fixing piece, it is described after lens barrel rear end and outer cover rear end face it
Between be equipped with shrapnel；First expansion ring is made of plastics with the second expansion ring, and the shrapnel is made of metal；It is fixed to dolly-out, dolly-back
Installation method of the type machinery passively without thermalization infrared lens comprises the steps of：
（1）Trim ring in lens barrel and before screwing in before first positive lens B is put into, trim ring after positive lens C is put into rear lens barrel and screws in, so
Baffle ring, the first expansion ring, fixing piece, the second expansion ring before being sequentially placed into preceding lens barrel afterwards, the front end of last rear lens barrel screw in
The rear end of preceding lens barrel；
（2）Shrapnel is put into the rear end of rear lens barrel, camera lens whole group is put into outer cover, germanium window A, then point are finally packed on outer cover
Glue cleans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698959.6A CN106125263B (en) | 2016-08-22 | 2016-08-22 | A kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698959.6A CN106125263B (en) | 2016-08-22 | 2016-08-22 | A kind of fixed type machinery of dolly-out,ing dolly-back is passively without thermalization infrared lens and its installation method |
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| CN106125263A CN106125263A (en) | 2016-11-16 |
| CN106125263B true CN106125263B (en) | 2018-06-08 |
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| 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 |
| CN106405783B (en) * | 2016-12-16 | 2019-01-01 | 福建福光天瞳光学有限公司 | A kind of economical fixed structure formula uncooled ir camera lens of f8mm and its working method |
| 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 |
| 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 |
| CN107065149A (en) * | 2017-04-19 | 2017-08-18 | 福建福光天瞳光学有限公司 | Far infrared high transmittance camera lens and its method of work |
| CN109814240A (en) * | 2018-12-28 | 2019-05-28 | 玉晶光电股份有限公司 | Optical imaging lens |
| CN109669252A (en) * | 2019-01-29 | 2019-04-23 | 福建福光天瞳光学有限公司 | A kind of protecting against shock camera lens and its assembly method |
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