CN207216114U - Electromotion focusing LONG WAVE INFRARED camera lens - Google Patents
Electromotion focusing LONG WAVE INFRARED camera lens Download PDFInfo
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- CN207216114U CN207216114U CN201721263766.4U CN201721263766U CN207216114U CN 207216114 U CN207216114 U CN 207216114U CN 201721263766 U CN201721263766 U CN 201721263766U CN 207216114 U CN207216114 U CN 207216114U
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- eyeglass
- lens barrel
- lens
- long wave
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Abstract
It the utility model is related to a kind of electromotion focusing LONG WAVE INFRARED camera lens, including the preceding group of eyeglass A and rear group eyeglass B set gradually along light incident direction, group eyeglass A is positive selenodont before described, group eyeglass B is positive selenodont after described, and the airspace organized before described between eyeglass A and rear group eyeglass B is 66.69 ~ 70.39mm.The utility model structure design is simple, compact, reasonable, and optical system is stable, and image quality is good.
Description
Technical field
It the utility model is related to a kind of electromotion focusing LONG WAVE INFRARED camera lens.
Background technology
As the technology of the fast development of science and technology, uncooled detector is also increasingly mature, LWIR Uncooled light
System has obtained wide hair application in military and civilian field.Because infrared optical material and mechanical material are in temperature change
Thermal deformation can be produced, therefore the change of working environment can cause that the focal length variations of optical system, image planes are elegant, image quality declines
Deng influence.In order to eliminate or reduce influence of the temperature change to optical system imaging, it is necessary to use corresponding compensation technique, make light
System keeps stable in a larger temperature range, it is ensured that image quality it is good.
Utility model content
In view of the deficiencies in the prior art, technical problem to be solved in the utility model is to provide a kind of electromotion focusing long wave
Infrared lens, it is not only reasonable in design and efficiently convenient.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of electromotion focusing LONG WAVE INFRARED camera lens,
Including the preceding group of eyeglass A and rear group eyeglass B set gradually along light incident direction, it is positive selenodont lens to organize eyeglass A before described,
Group eyeglass B be positive selenodont lens after described, it is described before airspace between group eyeglass A and rear group eyeglass B be 66.69 ~
70.39mm。
Preferably, the preceding group eyeglass A is arranged in preceding group of lens barrel and compressed using preceding trim ring, and the rear group eyeglass B is set
Put in rear group of lens barrel and compressed using rear trim ring.
Preferably, the rear end outer sheath of the preceding group lens barrel is provided with turning set, and organizing lens barrel after described is located in preceding group of lens barrel
Rear inside, the turning set, preceding group of lens barrel and rear group lens barrel link together through cam guide pin, opened on the turning set
Provided with the curved groove to be engaged with cam guide pin, it is described before group lens barrel on offer to cam lead top be engaged it is straight
Wire casing, one end of the cam guide pin are fixedly connected with rear group lens barrel, and the other end of the cam guide pin stretches into song through straight-line groove
Wire casing.
Compared with prior art, the utility model has the advantages that：The utility model structure design is simple, tight
Gather, rationally, optical system is stable, and image quality is good.
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the optical model figure of the utility model embodiment.
Fig. 2 is the organigram of the utility model embodiment.
Fig. 3 is the organigram of the utility model embodiment.
In figure：
Eyeglass B, C- image planes are organized after eyeglass A, B- are organized before A-；
Organize lens barrel before 1-, trim ring before 2- organizes lens barrel after 3-, trim ring after 4-, 5- turning sets, 6- cam guide pins, 7- bulge loops, 8-
Focusing motor, 9- adjustment gears, 10- potentiometers, 11- extreme position contact switch A, 12- extreme position contact switch B, 13- are fixed
Position screw.
Embodiment
For features described above and advantage of the present utility model can be become apparent, special embodiment below, and coordinate accompanying drawing,
It is described in detail below.
As shown in Fig. 1 ~ 3, a kind of electromotion focusing LONG WAVE INFRARED camera lens, including preceding group set gradually along light incident direction
Eyeglass A and group eyeglass B afterwards, it is positive selenodont lens to organize eyeglass A before described, and it is positive selenodont lens to organize eyeglass B after described, described
Airspace between preceding group of eyeglass A and rear group eyeglass B is 66.69 ~ 70.39mm.
In the utility model embodiment, eyeglass A is organized before described and is arranged in preceding group of lens barrel 1 and is pressed using preceding trim ring 2
Tightly, the rear group eyeglass B is arranged in rear group of lens barrel 3 and compressed using rear trim ring 4.
In the utility model embodiment, the rear end outer sheath that lens barrel 1 is organized before described is provided with turning set 5, and mirror is organized after described
Cylinder 3 is located in the rear inside of preceding group of lens barrel 1, and the turning set 5, preceding group of lens barrel 1 and rear group lens barrel 3 connect through cam guide pin 6
It is connected together, the curved groove to be engaged with cam guide pin 6 is offered on the turning set 5, organizes before described and is opened up on lens barrel 1
Have and push up the straight-line groove being engaged to be led with cam, one end of the cam guide pin 6 is fixedly connected with rear group lens barrel 3, described convex
The other end of wheel guide pin 6 stretches into curved groove through straight-line groove.
In the utility model embodiment, bulge loop 7 is arranged with outside the turning set 5, the periphery of the bulge loop 7 is uniformly with teeth
Groove, organized before described and focusing motor 8 is provided with lens barrel 1, adjustment gear 9 is provided with the output shaft of the focusing motor 8, it is described
Adjustment gear 9 is meshed with bulge loop 7.
In the utility model embodiment, in order to prevent focusing terminates rear bulge loop 7 from rotating without reason, by the focusing motor 8
Side is provided with potentiometer 10, and the potentiometer 10 is arranged on preceding group lens barrel 1, positioned for focal length；The work of the potentiometer 10
With being while voltage and current is adjusted, a kind of pulse electrical signal is exported, when reaching precalculated position, by powering off or changing
Voltage swing so that the potentiometer 10 obtains electric signal, so that the gear that focuses on the potentiometer 10 changes output torsion
Adjustment gear 9 on power cooperation focusing motor 8 rotates, and plays a part of positioning, such as when the focusing motor 8 powers off, institute
State potentiometer 10 and receive electric signal, increasing torsion in time makes the focusing motor 8 stop immediately, is held in a predetermined position.
In the utility model embodiment, organized before described on lens barrel 1 and be provided with extreme position contact switch A11, limit position
Contact switch B12 is put, positioning screw is provided between the extreme position contact switch A11, extreme position contact switch B12
13, the positioning screw 13 is arranged on turning set 5, when the bulge loop 7 turns to two extreme positions, it is necessary to by described
Positioning screw 13 touches contact switch to make focusing motor 8 be stopped.
In the utility model embodiment, the rear end that lens barrel 3 is organized after described is provided with switching circle, and the switching circle passes through spiral shell
Silk is fixed on rear group of lens barrel 3, devises M45X1-6g ridge on the switching circle and video camera coordinates.
In the utility model embodiment, in use, being driven by the adjustment gear 9 on the focusing motor 8 through bulge loop 7
Turning set 5 rotates, and the cam guide pin 6 slides back and forth along straight-line groove, so as to drive the rear group lens barrel 3 is movable to realize
Focusing.
In the utility model embodiment, the optical system being made up of above-mentioned lens set has reached following optical index：
1) focal length：f′=65mm；
2) relative aperture F：1.0；
3) angle of visual field：2w≥11.3°；
4) resolution ratio：It can be adapted to 640 × 512 17 μm of detector video cameras；
5) total length of light path ∑≤92.49mm, optics rear cut-off distance l ' >=11.53mm；
6) it is applicable spectral line scope：8μm~12μm.
In the utility model embodiment, each lens parameters are as follows：
Aspheric mask body face type equation is as follows：
In the utility model embodiment, in optical design, 8~12 μm of wide spectral ranges are carried out aberration corrections and
Balance, makes camera lens all have excellent picture matter in wide spectral range, and it is confocal to realize wide spectrum, such camera lens in long wave limit all
Can blur-free imaging；From the optical glass material of high refraction, low dispersion, by designing and optimizing, each of optical lens is corrected
Kind of aberration, the advantages that making camera lens realize high-resolution, object lens of large relative aperture, low distortion；Distortion is smaller, below 1%, relative to old
Structural aberration have more preferable control；In structure design, the standard of the concentricity of camera lens, precision and axial location was both ensured
Really, the compact-sized, attractive in appearance of camera lens is made as far as possible again；By the cooperation of focus motor 8 and potentiometer 10, realize in not equality of temperature
In the case of degree, imaging performance of the air away from change adjustment optical system between eyeglass, and optical imagery under different object distances
Can also it significantly improve.
The utility model is not limited to above-mentioned preferred forms, and anyone can obtain under enlightenment of the present utility model
Go out other various forms of electromotion focusing LONG WAVE INFRARED camera lenses.All equivalent changes done according to present utility model application the scope of the claims
With modification, it should all belong to covering scope of the present utility model.
Claims (3)
- A kind of 1. electromotion focusing LONG WAVE INFRARED camera lens, it is characterised in that：Including the preceding group of mirror set gradually along light incident direction Piece A and group eyeglass B afterwards, it is positive selenodont lens to organize eyeglass A before described, and it is positive selenodont lens to organize eyeglass B after described, before described Airspace between group eyeglass A and rear group eyeglass B is 66.69 ~ 70.39mm.
- 2. electromotion focusing LONG WAVE INFRARED camera lens according to claim 1, it is characterised in that：Group eyeglass A is arranged on before described Compressed in preceding group of lens barrel and using preceding trim ring, eyeglass B is organized after described and is arranged in rear group of lens barrel and is compressed using rear trim ring.
- 3. electromotion focusing LONG WAVE INFRARED camera lens according to claim 2, it is characterised in that：Before described outside the rear end of group lens barrel Side is arranged with turning set, it is described after group lens barrel be located in the rear inside of preceding group of lens barrel, the turning set, preceding group of lens barrel and after Group lens barrel is linked together through cam guide pin, and the curved groove to be engaged with cam guide pin, institute are offered on the turning set State to offer on preceding group of lens barrel and push up the straight-line groove being engaged to be led with cam, one end of the cam guide pin is consolidated with rear group lens barrel Fixed connection, the other end of the cam guide pin stretch into curved groove through straight-line groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721263766.4U CN207216114U (en) | 2017-09-29 | 2017-09-29 | Electromotion focusing LONG WAVE INFRARED camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721263766.4U CN207216114U (en) | 2017-09-29 | 2017-09-29 | Electromotion focusing LONG WAVE INFRARED camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207216114U true CN207216114U (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721263766.4U Active CN207216114U (en) | 2017-09-29 | 2017-09-29 | Electromotion focusing LONG WAVE INFRARED camera lens |
Country Status (1)
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|---|---|
| CN (1) | CN207216114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505685A (en) * | 2017-09-29 | 2017-12-22 | 福建福光天瞳光学有限公司 | Electromotion focusing LONG WAVE INFRARED camera lens and its method of work |
-
2017
- 2017-09-29 CN CN201721263766.4U patent/CN207216114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505685A (en) * | 2017-09-29 | 2017-12-22 | 福建福光天瞳光学有限公司 | Electromotion focusing LONG WAVE INFRARED camera lens and its method of work |
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