CN106646865A - Ultra-short two-view-field infrared optical system - Google Patents
Ultra-short two-view-field infrared optical system Download PDFInfo
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- CN106646865A CN106646865A CN201611094864.XA CN201611094864A CN106646865A CN 106646865 A CN106646865 A CN 106646865A CN 201611094864 A CN201611094864 A CN 201611094864A CN 106646865 A CN106646865 A CN 106646865A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
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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
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- Optics & Photonics (AREA)
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Abstract
The invention relates to an ultra-short two-view-field infrared optical system. The ultra-short two-view-field infrared optical system comprises an objective lens, a zoom lens, a compensating mirror, a first convergent mirror and a second convergent mirror which are sequentially arranged along the optical path. Through front-back movement of the zoom lens, a small view field optical path and a large view field optical path are formed; because conversion of two view fields and focusing compensation are achieved by means of movement of the same lens, moving mechanisms in the system are reduced, other parts in the optical path are all fixed parts, assembly and adjustment are simple, and the assembly and adjustment difficulty level of the system is greatly reduced. With respect to the ultra-short compact axial two-view-field infrared optical system, two-view-field zooming of the optical system is achieved in an ultra-short system space without reflector reflection by means of a primary imaging configuration, and the optical system is small in size and light in weight, and is suitable for being applied in a hand-held manner.
Description
Technical field
The invention belongs to optical devices technologies field, is related to a kind of ultrashort two visual field infrared optical system.
Background technology
Photodetection system needs have very remote operating distance and high-resolution imaging performance, and can meet high collection
Become second nature, the requirement of small size.At present, infrared imaging system has in fields such as navigation, observation, tracking and more and more widely should
With, and monoscopic infrared optical system cannot meet the growth requirement of modern infrared optical system, two visual fields due to single function
Infrared optical system has two visual fields of size, and big visual field can be used for extensive search target, and small field of view can be further looked at
And identification, it is widely used in modern infrared optical system.
Hand-held infrared system, it is desired to the features such as system has portable, simple to operate, its application prospect is extensive, such as army
Can take aim at equipment as individual reconnaissance equipment, night vision rifle in thing, on civilian can as scene of a fire movement search and rescue equipment, machinery therefore
Barrier testing equipment etc..Wherein, the application of double vision field optical system is particularly extensive.
In conventional double vision field system, zoom group, the two groups of lens movements of compensation group to realize the conversion of double-view field, so increase
The difficulty that add ray machine is debug, the visual field optical lens of ultrashort compact two, by significantly compression volume weight, saves system space.
The content of the invention
The technical problem to be solved
In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of ultrashort two visual field infrared optical system.
Technical scheme
A kind of ultrashort two visual field infrared optical system, it is characterised in that including object lens 1, zoom mirror 2, compensating glass 3, the first meeting
The convergent mirror 5 of poly- mirror 4 and second；Set gradually as object lens 1, zoom mirror 2, compensating glass 3, the first convergent mirror 4 and the second meeting along light path
Poly- mirror 5；Position of the mobile zoom mirror 2 between object lens 1 and compensating glass 3, constitutes big visual field or middle visual field light path, removes zoom mirror
2 outside light path, constitute small field of view light path, realize focal length be～focal length for 50mm multiple visual field light paths；The optical system
Volume is 96mm × 90mm × 90mm.
The material of the object lens 1 is silicon, and the material of zoom mirror 2 is germanium, and the material of compensating glass 3 is silicon, the first convergent mirror 4
Material is germanium, and the material of the second convergent mirror 5 is silicon.
The parameter configuration of the object lens 1, zoom mirror 2, compensating glass 3, the first convergent mirror 4 and the second convergent mirror 5 is：
Beneficial effect
The ultrashort two visual fields infrared optical system of one kind proposed by the present invention, including the object lens 1, zoom set gradually along light path
Mirror 2, compensating glass 3, convergence microscope group, assembling microscope group includes convergent mirror 4 and convergent mirror 5, moves forward and backward formation by zoom mirror 2 and neglects
Field light path and big visual field light path, due to using the conversion and focusing compensation that two visual fields are realized with the movement of a piece of lens, reducing
Motion in system, the remaining part in light path is fixed component, debugs simple, largely reduces system
Resetting difficulty.Axially two visual field infrared optical systems adopt Polaroid configuration in no-mirror to the ultrashort compact of the present invention
Turn back and two visual field zooms of optical system are realized in ultrashort system space, optical system small volume is lightweight, be adapted to hand-held
Formula application.
Description of the drawings
Fig. 1 is two visual field infrared optical system index paths of the Optical devices of the present invention
1- object lens, 2- zoom mirrors, 3- compensating glass, the convergent mirrors of 4- first, the convergent mirrors of 5- second, 6- detectors.
Specific embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
As shown in figure 1, the Optical devices of the present invention include two visual field infrared optical systems, two visual field infrared optical system bags
Include along optical axis object lens 1, zoom mirror 2, compensating glass 3, the first convergent mirror 4 and the second convergent mirror 5 that successively order is arranged.In the second meeting
The rear end of poly- mirror 5 is provided with detector 6, then one is placed in the optical system that volume is 96mm × 90mm × 90mm.
In the present embodiment, detector is refrigeration mode infrared focal plane detector
Position of the mobile zoom mirror 2 between object lens 1 and compensating glass 3, constitutes big visual field or middle visual field light path, zoom mirror 2
It is small field of view in the location A near compensating glass 3, zoom mirror is big visual field in 3 middle part B location of object lens 1 and compensating glass.
Remove zoom mirror 2 outside light path, constitute small field of view light path, realize focal length be～focal length for 50mm multiple visual fields
Light path.
The zoom mirror 2 can either realize visual field handoff functionality, it is also possible to realize realizing focusing work(at -40 DEG C to+60 DEG C
Can, it is capable of achieving for the movement or removal of zoom mirror 2 using a motion, reduce volume and weight.
The material of the object lens 1 is silicon, and the material of zoom mirror 2 is germanium, and the material of compensating glass 3 is silicon, the first convergent mirror 4
Material is germanium, and the material of the second convergent mirror 5 is silicon.Above-mentioned each optical module introduces altogether four aspherical and diffraction surfaces,
Realize aberration correction, improve as the effect of matter by less lens numbers.Design parameter and material are as shown in table 1.
The optical system of table 1 is constituted and parameter
The Optical devices of the present embodiment when in use, are detected first by big visual field light path to target, are at this moment passed through
Zoom mirror 2 is moved on to B points by axial movement, forms big visual field light path, and light is through big visual field light path in refrigeration mode infrared focus plane
It is imaged on detector, then target is identified by middle small field of view light path, zoom mirror 2 is moved on to by A points by axial movement
Small field of view light path is formed, light is imaged on the detector through small field of view light path.
In the other embodiment of the Optical devices of the present invention, zoom microscope group, focusing microscope group, compensation microscope group, convergence microscope group
The quantity of lens can depend on actual need and arrange.
The embodiment of two visual field infrared optical systems of the present invention is red with two visual fields in the embodiment of above-mentioned Optical devices
The structure of outer optical system is completely the same, no longer repeats one by one herein.In addition, various two in the embodiment of above-mentioned Optical devices
The alternative of visual field infrared optical system is also applied for the embodiment of the three visual field infrared optical systems of the present invention.
Claims (3)
1. a kind of ultrashort two visual field infrared optical system, it is characterised in that including object lens (1), zoom mirror (2), compensating glass (3), the
One convergent mirror (4) and the second convergent mirror (5)；Set gradually as object lens (1), zoom mirror (2), compensating glass (3), the first meeting along light path
Poly- mirror (4) and the second convergent mirror (5)；Position of mobile zoom mirror (2) between object lens (1) and compensating glass (3), constitutes big visual field
Or middle visual field light path, remove zoom mirror (2) outside light path, constitute small field of view light path, realize focal length be～focal length be 50mm
Multiple visual field light paths；The optical system volume is 96mm × 90mm × 90mm.
2. ultrashort two visual field infrared optical system according to claim 1, it is characterised in that：The material of the object lens (1) is
Silicon, the material of zoom mirror (2) is germanium, and the material of compensating glass (3) is silicon, and the material of the first convergent mirror (4) is germanium, the second convergent mirror
(5) material is silicon.
3. ultrashort two visual field infrared optical system according to claim 1 or claim 2, it is characterised in that：The object lens (1), zoom
The parameter configuration of mirror (2), compensating glass (3), the first convergent mirror (4) and the second convergent mirror (5) is：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094864.XA CN106646865B (en) | 2016-12-02 | 2016-12-02 | A kind of ultrashort two visual fields infrared optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094864.XA CN106646865B (en) | 2016-12-02 | 2016-12-02 | A kind of ultrashort two visual fields infrared optical system |
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| Publication Number | Publication Date |
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| CN106646865A true CN106646865A (en) | 2017-05-10 |
| CN106646865B CN106646865B (en) | 2019-07-09 |
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| CN201611094864.XA Active CN106646865B (en) | 2016-12-02 | 2016-12-02 | A kind of ultrashort two visual fields infrared optical system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005181774A (en) * | 2003-12-22 | 2005-07-07 | Fujinon Corp | Zoom lens |
| CN102269871A (en) * | 2011-07-15 | 2011-12-07 | 昆明物理研究所 | Bicolor dual-view field infrared imaging optical system |
| CN104267484A (en) * | 2014-02-20 | 2015-01-07 | 山东神戎电子股份有限公司 | Small size uncooled dual-field-of-view infrared optical system |
| CN105223679A (en) * | 2015-10-16 | 2016-01-06 | 西南技术物理研究所 | Object lens of large relative aperture near infrared altogether light path double-view field disappears heat difference optical imaging system |
| CN105301748A (en) * | 2015-12-04 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Double-wave-band three-field of view infrared optical system |
| CN205539681U (en) * | 2015-12-11 | 2016-08-31 | 三河市蓝思泰克光电科技有限公司 | Become multiple proportions long wave infrared continuous -zoom lens greatly |
-
2016
- 2016-12-02 CN CN201611094864.XA patent/CN106646865B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005181774A (en) * | 2003-12-22 | 2005-07-07 | Fujinon Corp | Zoom lens |
| CN102269871A (en) * | 2011-07-15 | 2011-12-07 | 昆明物理研究所 | Bicolor dual-view field infrared imaging optical system |
| CN104267484A (en) * | 2014-02-20 | 2015-01-07 | 山东神戎电子股份有限公司 | Small size uncooled dual-field-of-view infrared optical system |
| CN105223679A (en) * | 2015-10-16 | 2016-01-06 | 西南技术物理研究所 | Object lens of large relative aperture near infrared altogether light path double-view field disappears heat difference optical imaging system |
| CN105301748A (en) * | 2015-12-04 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Double-wave-band three-field of view infrared optical system |
| CN205539681U (en) * | 2015-12-11 | 2016-08-31 | 三河市蓝思泰克光电科技有限公司 | Become multiple proportions long wave infrared continuous -zoom lens greatly |
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| CN106646865B (en) | 2019-07-09 |
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