CN206020795U - A kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens - Google Patents
A kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens Download PDFInfo
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- CN206020795U CN206020795U CN201620913855.8U CN201620913855U CN206020795U CN 206020795 U CN206020795 U CN 206020795U CN 201620913855 U CN201620913855 U CN 201620913855U CN 206020795 U CN206020795 U CN 206020795U
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- lens
- dolly
- lens barrel
- outer housing
- transconversion
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Abstract
This utility model is related to a kind of fixed type machinery of dolly-out,ing dolly-back passively without transconversion into heat infrared lens, in the optical system of the camera lens, along light, incident direction is sequentially provided with germanium window A, plus lens B and plus lens C from left to right, airspace between the germanium window A and plus lens B is 0.83mm, and the airspace between the plus lens B and plus lens C is 44.97mm.This is fixed to dolly-out, dolly-back that optical system structure of the type machinery passively without transconversion into heat infrared lens is simple, and lens construction length is short, small volume is easy to carry, compact conformation.
Description
Technical field
This utility model is related to a kind of fixed type machinery of dolly-out,ing dolly-back passively without transconversion into heat infrared lens, belongs to camera lens field.
Background technology
With the continuous development of uncooled detector technology and increasingly mature, LWIR Uncooled Optical System is in army
With being widely used with civil area, because infrared lens have good in anti-interference performance；Night operating distance is remote；Wear
Flue dust, haze ability are strong thoroughly；Can the work of round-the-clock, round-the-clock；Have multiple target panorama observation, follow the trail of and target recognition ability and
The advantages of ability of good anti-target stealth, so the image quality to optical system proposes higher and higher requirement.But
As infrared optical material and mechanical material have certain heat effect, the acute variation of operating temperature can be produced to optical system
Serious impact, for example cause focal length variations, image planes drift, image quality to decline etc..Therefore, in order to adapt to varying environment temperature
Degree, it is desirable to which infrared lens have certain temperature self-adaptation ability；And usually due to the problem of distance under remote monitor
Cause detected things to be difficult to differentiate between, therefore also want in the case of remote monitoring camera lens have high resolution mist transmitting strong,
The low feature of aberration rate.However, most lens construction is complicated on the market, difficulty of processing and relatively costly, mist transmitting is poor, divide
Resolution is low, lens construction length length, volume big, as ambient temperature is substantially close to so difficult especially when monitoring at night
To distinguish the form of monitored things.
Utility model content
The purpose of this utility model is for above weak point, there is provided a kind of the fixed of reasonable in design is dolly-out,ed dolly-back
Type machinery is passively without transconversion into heat infrared lens.
The technical solution of the utility model is that a kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens, the mirror
In the optical system of head, along light, incident direction is sequentially provided with germanium window A, plus lens B and plus lens C, the germanium window A from left to right
It is 0.83mm with the airspace between plus lens B, the airspace between the plus lens B and plus lens C is 44.97mm.
Further, the frame for movement of the camera lens includes that outer housing, the inside of the outer housing are provided with front lens barrel and rear lens barrel,
The rear end of the front lens barrel is mutually spirally connected with the front end of rear lens barrel, the premenstrual trim ring of the plus lens B installed in the front end of front lens barrel,
The rear end of plus lens C lens barrels after trim ring is arranged on through after.
Further, the germanium window A is arranged in the front inner wall of outer housing, and through the limited step in outer housing front inner wall
Carry out spacing.
Further, front back-up ring is provided between the front lens barrel and the inwall of outer housing, and the front back-up ring is connected with outer housing screw thread
Connect, be provided between the front lens barrel, rear lens barrel and the inwall of outer housing can the movable fixture of relative outer housing, the fixture
Inner circumferential side be provided with the first expansion ring, the front end of first expansion ring withstands on fixture rear end face, rear end and withstands on rear lens barrel end
Face, the outer circumferential side of the fixture are provided with the second expansion ring, and the rear end of second expansion ring withstands on fixture front end face, front end
Front back-up ring end face is withstood on, second expansion ring drives the first expansion ring to be synchronously moved rearwards by through fixture, the rear lens barrel
Shell fragment is provided between rear end and the rear end face of outer housing.
Further, first expansion ring is made of plastics with the second expansion ring, and the shell fragment is made of metal.
Compared with prior art, this utility model has the advantages that：
（1）There is high imaging resolution, high-penetrability, the object of tiny temperature change can be caught；
（2）Compact conformation, cost of manufacture are cheap, suitable for scale production；
（3）On the premise of compact conformation is ensured, adopt a series of measures, improve camera lens vibration resistance, the ability of impact；
（4）By the way of front lens barrel and rear lens barrel screw thread are to lock, simple structure avoids increasing cost and mirror using spacer ring
Nose heave amount；
（5）Rigidity Calculation can be carried out in lens construction design, suitably increase wall thickness, improve natural frequency, improve mirror
The vibration resistance of head, it is ensured that the use requirement of system, it is ensured that the sealing property of camera lens.
Description of the drawings
Below in conjunction with the accompanying drawings this utility model patent is further illustrated.
Fig. 1 is the optical system schematic diagram of the utility model embodiment；
Fig. 2 is the frame for movement schematic diagram of the utility model embodiment；
In figure：
A- germanium window A；B- plus lens B；C- plus lens C；1- outer housings；Lens barrel before 2-；Lens barrel after 3-；Trim ring before 4-；Press after 5-
Circle；Back-up ring before 6-；7- fixtures；The first expansion rings of 8-；The second expansion rings of 9-；10- shell fragments；11- fixture rear end faces；12- is solid
Determine part front end face.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is further illustrated.
As shown in Fig. 1～2, a kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens, the optical system of the camera lens
In system, along light, incident direction is sequentially provided with germanium window A, plus lens B and plus lens C from left to right, the germanium window A and plus lens B it
Between airspace be 0.83mm, the airspace between the plus lens B and plus lens C be 44.97mm.
In the present embodiment, the frame for movement of the camera lens includes outer housing 1, the inside of the outer housing be provided with front lens barrel 2 with
Lens barrel 3 afterwards, the rear end of the front lens barrel are mutually spirally connected with the front end of rear lens barrel, and the premenstrual trim ring 4 of the plus lens B is arranged on front mirror
The front end of cylinder, the rear end of plus lens C lens barrels after trim ring 5 is arranged on through after.
In the present embodiment, the germanium window A is arranged in the front inner wall of outer housing, and through spacing in outer housing front inner wall
Step carries out spacing, the outer housing and detector（It is not drawn in accompanying drawing）Threaded connection.
In the present embodiment, front back-up ring 6, the front back-up ring and outer housing spiral shell are provided between the front lens barrel and the inwall of outer housing
Stricture of vagina connect, be provided between the front lens barrel, rear lens barrel and the inwall of outer housing can relative outer housing move forward and backward fixture 7, described
The inner circumferential side of fixture is provided with the first expansion ring 8, and the front end of first expansion ring withstands on fixture rear end face 11, rear end and withstands on
Lens barrel end face afterwards, the outer circumferential side of the fixture is provided with the second expansion ring 9, before the rear end of second expansion ring withstands on fixture
End face 12, front end withstands on front back-up ring end face, and second expansion ring drives the first expansion ring to be synchronously moved rearwards by through fixture, institute
State and between the rear end of rear lens barrel and the rear end face of outer housing, be provided with shell fragment 10.
In the present embodiment, first expansion ring is made of plastics with the second expansion ring, and the shell fragment 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 shell fragment is little, the preferred spring of the shell fragment,
But it is not limited to this.
In this utility model embodiment, using the difference between mechanical material thermal characteristicss, by different qualities material
Combine to eliminate the impact of temperature, keep, as matter is stable, realizing that the machinery of temperature self-adaptation, without transconversion into heat, makes red interior in a big way
Outer optical system can keep good image quality within the scope of a larger temperature；When ambient temperature is raised, due to
Plus lens B and plus lens C is expanded simultaneously and is caused original focal plane to shift forward to cause to obscure, and now described second stretches
Contracting ring expands, and the end that the second expansion ring withstands front back-up ring is motionless, and rearward end promotes fixture, fixture to promote first again backward
Expansion ring, the first expansion ring can also expand, and coordinate the promotion of fixture, make front lens barrel and rear lens barrel synchronous compression shell fragment, just make
Away from diminishing, the focal plane for making up original biased forwards makes which return to often to air between lens B and plus lens C and image planes
Clear picture under temperature state.
A kind of fixed installation method of the type machinery passively without transconversion into heat infrared lens of dolly-out,ing dolly-back, comprises the steps of：
（1）Plus lens B is put in front lens barrel and is screwed in front trim ring first, plus lens C is pressed after being put in rear lens barrel and screwing in
Circle, back-up ring, the first expansion ring, fixture, the second expansion ring before being then sequentially placed in front lens barrel, the front end of last rear lens barrel
The rear end of lens barrel before screwing in；
（2）Shell fragment is put in the rear end of rear lens barrel, camera lens whole group is put in outer housing, finally on outer housing, load germanium window A,
Dispensing is cleaned again.
In the present embodiment, the optical system being made up 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）The angle of visual field：16°；
（5）Relative aperture D/ f '：1/1.0；
（6）Optics volume：∅70mm×65.17mm（Diameter × length）.
This utility model is to overcome distance, impact of the temperature to infrared lens, in the fixed passive nothing of type machinery of dolly-out,ing dolly-back
During transconversion into heat infrared lens Design of Mechanical Structure, it is suitable that the side-play amount according to the focal plane of camera lens in the case of varying environment is selected
Frame for movement and flexible ring material, allow camera lens keep good imaging effect under -40 DEG C ~ 80 DEG C of camera lens, realize temperature
The adaptive machinery of degree is passively without transconversion into heat.In addition complex, required zero of the structure design of most on the market camera lens
Part is more, and not only increasing manufacturing cost also makes installation become complicated, and cost of labor is greatly improved, and this is set using fixed
Meter, it is to avoid the trouble of secondary adjustment rear cut-off distance, it is achieved that structure is extremely light and handy, installs simple and convenient, greatly reduces cost.
This utility model have without transconversion into heat stability strong, simple structure, mist transmitting are strong, dolly-out, dolly-back in the case of the spy such as resolution height
Point；In structure design, the difference of the thermal coefficient of expansion between reasonable utilization different materials carries out temperature-compensating, realizes temperature certainly
The frame for movement of adaptation is without transconversion into heat feature；Reality can be executed with LWIR Uncooled type 640*480,17 μm of detector adaptations
Condition record and safety monitoring task.
Above-listed preferred embodiment, is further described to the purpose of this utility model, technical scheme and advantage,
Be should be understood that the foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements that is made etc. should be included in this practicality
Within new protection domain.
Claims (5)
1. a kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens, it is characterised in that：In the optical system of the camera lens
Along light, incident direction is sequentially provided with germanium window A, plus lens B and plus lens C from left to right, between the germanium window A and plus lens B
Airspace is 0.83mm, and the airspace between the plus lens B and plus lens C is 44.97mm.
2. fixed type machinery of dolly-out,ing dolly-back according to claim 1 is passively without transconversion into heat infrared lens, it is characterised in that：The mirror
The frame for movement of head includes that outer housing, the inside of the outer housing are provided with front lens barrel and rear lens barrel, the rear end of the front lens barrel and rear mirror
The front end of cylinder is mutually spirally connected, and the premenstrual trim ring of the plus lens B installed in the front end of front lens barrel, pacify by plus lens C trim rings through after
It is mounted in the rear end of rear lens barrel.
3. fixed type machinery of dolly-out,ing dolly-back according to claim 2 is passively without transconversion into heat infrared lens, it is characterised in that：The germanium
Window A is in the front inner wall of outer housing, and carries out through the limited step in outer housing front inner wall spacing.
4. fixed type machinery of dolly-out,ing dolly-back according to claim 2 is passively without transconversion into heat infrared lens, it is characterised in that：Before described
Be provided with front back-up ring between lens barrel and the inwall of outer housing, the front back-up ring is threadedly coupled with outer housing, the front lens barrel, rear lens barrel with outer
The fixture that can be moved forward and backward with respect to outer housing is provided between the inwall of cover, and the inner circumferential side of the fixture is provided with the first expansion ring,
The front end of first expansion ring withstands on fixture rear end face, rear end and withstands on rear lens barrel end face, and the outer circumferential side of the fixture sets
There is the second expansion ring, the rear end of second expansion ring withstands on fixture front end face, front end and withstands on front back-up ring end face, described second
Expansion ring drives the first expansion ring to be synchronously moved rearwards by through fixture, sets between the rear end of rear lens barrel and the rear end face of outer housing
There is shell fragment.
5. fixed type machinery of dolly-out,ing dolly-back according to claim 4 is passively without transconversion into heat infrared lens, it is characterised in that：Described
One expansion ring is made of plastics with the second expansion ring, and the shell fragment is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913855.8U CN206020795U (en) | 2016-08-22 | 2016-08-22 | A kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913855.8U CN206020795U (en) | 2016-08-22 | 2016-08-22 | A kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens |
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| Publication Number | Publication Date |
|---|---|
| CN206020795U true CN206020795U (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620913855.8U Active CN206020795U (en) | 2016-08-22 | 2016-08-22 | A kind of fixed type machinery of dolly-out,ing dolly-back is passively without transconversion into heat infrared lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125263A (en) * | 2016-08-22 | 2016-11-16 | 福建福光天瞳光学有限公司 | A kind of fixed type machinery of dolly-out,ing dolly-back is passive without transconversion into heat infrared lens and installation method thereof |
-
2016
- 2016-08-22 CN CN201620913855.8U patent/CN206020795U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125263A (en) * | 2016-08-22 | 2016-11-16 | 福建福光天瞳光学有限公司 | A kind of fixed type machinery of dolly-out,ing dolly-back is passive without transconversion into heat infrared lens and installation method thereof |
| CN106125263B (en) * | 2016-08-22 | 2018-06-08 | 福建福光天瞳光学有限公司 | 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |