CN206311823U - Accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens - Google Patents
Accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens Download PDFInfo
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- CN206311823U CN206311823U CN201621386205.9U CN201621386205U CN206311823U CN 206311823 U CN206311823 U CN 206311823U CN 201621386205 U CN201621386205 U CN 201621386205U CN 206311823 U CN206311823 U CN 206311823U
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Abstract
The utility model is related to a kind of accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens, including mechanical component and optical system, the mechanical component includes primary mirror seat and focusing drawtube, the optical system includes preceding fixed group eyeglass and the focusing group eyeglass with the positive light coke that are set gradually along light incident direction, fixed group eyeglass and focusing group eyeglass are the falcate germanium positive lens convex surface facing object space before described, preceding fixed group eyeglass is arranged in primary mirror seat, and focusing group eyeglass is arranged in focusing drawtube.The present apparatus has detection range remote, the advantages of IP67 water proof and dust proofs, low distortion, vibration resistance and impact.
Description
Technical field
The utility model is related to a kind of accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens.
Background technology
With science and technology fast development, uncooled detector technology continue to develop with it is increasingly mature, because long wave is red
Outer non-brake method optical system has many good characteristics, such as directly perceived by image, it is easy to observe；Precision is high etc., in military and civilian neck
Domain has obtained wide hair application.In recent years, it is right with the long term growth and its continuous extension of range of application of infrared optics technology
The demand of infrared optical system increasingly strengthens.Infrared electric focusing optical system can continuously focus, and change the same of visual field
When, image planes can keep stabilization clear, and image planes will not be produced elegant.
The content of the invention
The utility model makes improvement for the problem that above-mentioned prior art is present, i.e., skill to be solved in the utility model
Art problem is to provide a kind of accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens, remote with detection range, IP67 water proof and dust proofs,
The advantages of low distortion, vibration resistance and impact.
In order to solve the above-mentioned technical problem, a kind of technical scheme of the present utility model is：A kind of accurate electromotion focusing formula is non-
Refrigeration long-wave infrared camera lens, including mechanical component and optical system, the mechanical component include primary mirror seat and focusing drawtube, described
Optical system includes preceding fixed group eyeglass and the focusing group eyeglass with the positive light coke that are set gradually along light incident direction, institute
Fixed group eyeglass and focusing group eyeglass are the falcate germanium positive lens convex surface facing object space before stating, and preceding fixed group eyeglass is arranged on
In primary mirror seat, focusing group eyeglass is arranged in focusing drawtube.
Further, air before described between fixed group eyeglass and focusing group eyeglass is away from being 102.33mm.
Further, the focusing drawtube includes being screwed onto the outer lens barrel of primary mirror seat lateral wall rearward end, is set in primary mirror
The inner lens cone for installing focusing group eyeglass of rear end in seat, the primary mirror seat lateral wall rear end is provided with focusing motor, described
Outer lens barrel lateral wall is provided with focusing gear, and the output end of the focusing motor is provided with the sliding tooth being meshed with focusing gear
Wheel, the outer lens barrel drives inner lens cone to be moved axially along primary mirror seat by a focusing guide pin.
Further, primary mirror seat lateral wall rearward end be also respectively provided be arranged in outer lens barrel two ends fine motion it is spacing
Travel switch.
Further, preceding group of trim ring of fixed preceding fixed group eyeglass is provided with the primary mirror seat, is set in the inner lens cone
It is equipped with rear group of trim ring of fixed focusing microscope group.
Further, the primary mirror seat front end is additionally provided with preceding Jing Gai.
Compared with prior art, the utility model has the advantages that：
（1）In optical design, in optical system, the focal power of reasonable distribution each group, to 8~12 μm of wide spectrum model
Enclosing carries out aberration correction and balance, camera lens is all had excellent picture matter in wide spectral range, and it is confocal to realize wide spectrum, so
Camera lens can blur-free imaging in middle long wave limit；
（2）From height refraction, the optical glass material of low dispersion, by designing and optimizing, each of optical lens is corrected
Aberration is planted, camera lens is realized the advantages of high-resolution, object lens of large relative aperture, low distortion；Distortion is smaller, below 1%, relative to old
Structural aberration have more preferable control；
（3）In optical design, by the optimization design to cam curve, the optical axis in focussing process has been efficiently controlled
Drift, image quality is excellent in full focal length segment limit；
（4）On the premise of guarantee is bolted and gathers, adopt a series of measures, improve camera lens vibration resistance, the ability of impact；
（5）In temperature effect design aspect, operating temperature setting is -40 DEG C ~+80 DEG C, and primary mirror seat is used and first fixed group
The close steel alloy of glass for lenses material, to ensure the stress shadow that microscope base is not expanded with heat and contract with cold under working temperature environment by material
Ring.
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 organigram of optical system in the utility model embodiment.
Fig. 2 is the construction schematic front view of the utility model embodiment.
Fig. 3 is the construction diagrammatic side view of the utility model embodiment.
Fig. 4 is the stereogram of the utility model embodiment.
In figure：Fixed group eyeglass, 2- focusing group eyeglasses, 3- primary mirrors seat, organize trim ring, Jing Gai before 32-, outside 4- before 1- before 31-
Lens barrel, 41- focusing gears, 42- focusing guide pins, 5- inner lens cones organize trim ring, 6- focusing motors, 61- drive gears, 7- rows after 51-
Cheng Kaiguan.
Specific embodiment
Embodiment one：As shown in Fig. 1 ~ 4, a kind of accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens, including mechanical group
Part and optical system, the mechanical component include primary mirror seat 3 and focusing drawtube, and the optical system is included along light incident direction
Preceding fixed group eyeglass 1 and the focusing group eyeglass 2 with positive light coke for setting gradually, preceding fixed group eyeglass 1 and the focusing group
Eyeglass 2 is the falcate germanium positive lens convex surface facing object space, and preceding fixed group eyeglass is arranged in primary mirror seat 3, focusing group eyeglass
It is arranged in focusing drawtube.
In the present embodiment, it is described before air between fixed group eyeglass and focusing group eyeglass away from being 102.33mm.
In the present embodiment, the focusing drawtube includes being screwed onto the outer lens barrel 4 of primary mirror seat lateral wall rearward end, is set in master
The inner lens cone 5 for installing focusing group eyeglass of rear end in microscope base, the primary mirror seat lateral wall rear end is provided with focusing motor 6,
The outer lens barrel lateral wall is provided with focusing gear 41, and the output end of the focusing motor is provided with what is be meshed with focusing gear
Drive gear 61, the outer lens barrel drives inner lens cone to be moved axially along primary mirror seat by a focusing guide pin 42.The focusing guide pin is worn
Cross primary mirror seat side wall and connect inside and outside lens barrel, the stroke groove for allowing focusing guide pin to move is offered on the wall of primary mirror seat side.
In the present embodiment, the primary mirror seat lateral wall rearward end is also respectively provided with the fine motion limit for being arranged in outer lens barrel two ends
Position travel switch 7.
In the present embodiment, preceding group of trim ring 31 of fixed preceding fixed group eyeglass, the inner lens cone are provided with the primary mirror seat
Inside it is provided with rear group of trim ring 51 of fixed focusing microscope group.
In the present embodiment, the primary mirror seat front end is additionally provided with preceding mirror lid 32.
In the present embodiment, the optical system being made up of above-mentioned lens set has reached following optical index：
1) focal length f ':100mm；
2) relative aperture F：1.0；
3) angle of visual field：6.2°x4.98°；
4) resolution ratio：Can be adapted to 640 × 512 17 μm of detector video cameras；
5) total length of light path ∑≤131mm, optics rear cut-off distance l ' >=14.65mm；
6) it is applicable spectral line scope：8μm~12μm.
Following table one lists the parameter of each eyeglass：
Table one
| Surface | Radius of curvature（mm） | Spacing（mm） | Glass material | Remarks | Refractive index |
| S1 | 98.37 | 8.37 | Germanium | Preceding fixed group eyeglass | 4.004 |
| S2 | 136.25 | 102.33 | Germanium | 4.004 | |
| S3 | It is aspherical | 4.06 | Germanium | Focusing group eyeglass | 4.004 |
| S4 | 28.92 | 14.67 | Germanium | 4.004 |
Wherein, fixed group one side of the eyeglass 1 towards incident ray before S1 is, S2 is preceding fixed group eyeglass 1 dorsad incident light
The one side of line；Equally, former and later two faces of S3, S4 focusing group eyeglass 2；Radius of curvature refers to the radius of curvature on each surface, spacing
It is the spacing between adjacent two surface, for example, the spacing of S1 refers to the center spacing between S1 and S2 surfaces, other classes according to this
Push away.
Aspheric mask body face type equation is as follows：
Wherein, Z be it is aspherical along optical axis direction height for r position when, away from aspheric vertex of surface apart from rise；C=1/
R, R represent paraxial radius of curvature R=- 81.192 of minute surface；K is circular cone coefficient；A, B, C, D are high order aspheric surface coefficient.Correlation ginseng
Number is as shown in Table 2：
Table two, aspherical surface data
| It is aspherical | K | A | B | C | D |
| S2 | 0 | -1.448391E-006 | -3.0213821E-010 | -2.739455E-012 | -5.2525635E-015 |
When using, focal length is fixed, and finely tuning focusing group eyeglass by motor of focusing makes image clearly.
The foregoing is only preferred embodiment of the present utility model, it is all according to present utility model application the scope of the claims done it is equal
Deng change and modification, should all belong to covering scope of the present utility model.
Claims (6)
1. a kind of accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens, it is characterised in that：Including mechanical component and optical system,
The mechanical component includes primary mirror seat and focusing drawtube, and the optical system is included along having that light incident direction sets gradually
Preceding fixed group eyeglass and the focusing group eyeglass of positive light coke, the preceding fixed group eyeglass and focusing group eyeglass are convex surface facing thing
The falcate germanium positive lens of side, preceding fixed group eyeglass is arranged in primary mirror seat, and focusing group eyeglass is arranged in focusing drawtube.
2. accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens according to claim 1, it is characterised in that：It is solid before described
Surely the air between group eyeglass and focusing group eyeglass is away from being 102.33mm.
3. accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens according to claim 1 and 2, it is characterised in that：It is described
Focusing drawtube includes being screwed onto the outer lens barrel of primary mirror seat lateral wall rearward end, is set in being focused for installation for the interior rear end of primary mirror seat
The inner lens cone of group eyeglass, the primary mirror seat lateral wall rear end is provided with focusing motor, and the outer lens barrel lateral wall is provided with focusing
Gear, the output end of the focusing motor is provided with the drive gear being meshed with focusing gear, and the outer lens barrel is adjusted by one
Burnt guide pin drives inner lens cone to be moved axially along primary mirror seat.
4. accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens according to claim 3, it is characterised in that：The primary mirror
Seat lateral wall rearward end is also respectively provided with the fine motion limitation travel switch for being arranged in outer lens barrel two ends.
5. accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens according to claim 3, it is characterised in that：The primary mirror
Preceding group of trim ring of fixed preceding fixed group eyeglass is provided with seat, rear group of pressure of fixed focusing microscope group is provided with the inner lens cone
Circle.
6. accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens according to claim 5, it is characterised in that：The primary mirror
Seat front end is additionally provided with preceding Jing Gai.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386205.9U CN206311823U (en) | 2016-12-16 | 2016-12-16 | Accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386205.9U CN206311823U (en) | 2016-12-16 | 2016-12-16 | Accurate electromotion focusing formula non-brake method LONG WAVE INFRARED camera lens |
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| CN206311823U true CN206311823U (en) | 2017-07-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2021244144A1 (en) * | 2020-06-01 | 2021-12-09 | 广东奥普特科技股份有限公司 | Prime lens adjusting mechanism |
-
2016
- 2016-12-16 CN CN201621386205.9U patent/CN206311823U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2021244144A1 (en) * | 2020-06-01 | 2021-12-09 | 广东奥普特科技股份有限公司 | Prime lens adjusting mechanism |
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