CN106772934A - A kind of changeable dual field-of-view infrared optical system - Google Patents
A kind of changeable dual field-of-view infrared optical system Download PDFInfo
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- CN106772934A CN106772934A CN201611114984.1A CN201611114984A CN106772934A CN 106772934 A CN106772934 A CN 106772934A CN 201611114984 A CN201611114984 A CN 201611114984A CN 106772934 A CN106772934 A CN 106772934A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 50
- 230000009977 dual effect Effects 0.000 title claims abstract description 19
- 230000010287 polarization Effects 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000003164 Diplopia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 208000029444 double vision Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 239000000463 material Substances 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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
-
- 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
Abstract
The present invention relates to a kind of changeable dual field-of-view infrared optical system, belong to technical field of optical.Solve traditional switching varifocal optical system complex structure, take up room big technical problem.Described infrared optical system：Object space light is imaged at an image planes by after primary mirror, secondary mirror reflection all the way first by being divided into the different light beam in two-way polarization direction after the first analyzer, and another road is imaged at an image planes by the first lens group；By the second analyzer be imaged onto in detector image planes two pictures formed by image planes by the second lens group；The inner ring of the first analyzer is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutually perpendicular to；The rear plated surface part reflective semitransparent film of secondary mirror；Object space light is imaged onto an image planes by two-way optical system, the light that can be imaged onto detector image planes is screened by rotating the second analyzer, to reach the purpose of switching double-view field.The infrared optical system simple structure, image stabilization, easy switching.
Description
Technical field
The present invention relates to a kind of optical system, and in particular to a kind of changeable dual field-of-view infrared optical system.
Background technology
Infrared imaging optical system is more and more wider in the application of military, civilian every field.Wherein, many fields focus red
The single function of outer optical system cannot meet demand.This is accomplished by infrared optical lens and both can search for mesh in visual field greatly
Mark, can use long-focus resolution target again.Changeable double vision field optical system is designed to, so both ensure that can use big visual field
Search target, can use long-focus object observing again.The optical system of traditional switching zoom can reach above-mentioned purpose, but
Its complex structure, takes up room big.
The content of the invention
The invention solves the problems that traditional switching varifocal optical system complex structure, take up room big technical problem, there is provided
A kind of simple structure, image stabilization, the changeable dual field-of-view infrared optical system of easy switching.
In order to solve the above-mentioned technical problem, technical scheme is specific as follows：
A kind of changeable dual field-of-view infrared optical system, including：First analyzer, the first lens group, secondary mirror, primary mirror, one
Secondary image planes, the second lens group, the second analyzer and detector；
Object space light is anti-by primary mirror all the way first by being divided into the different light beam in two-way polarization direction after the first analyzer
Penetrate, secondary mirror is imaged at an image planes after reflecting, another road is imaged at an image planes by the first lens group；
By the second analyzer be imaged onto in detector image planes two pictures formed by image planes by the second lens group；
The inner ring of first analyzer is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutually hung down
Directly；The rear plated surface part reflective semitransparent film of the secondary mirror；So making object space light can be imaged onto once by two-way optical system
In image planes, the light that can be imaged onto detector image planes is screened by rotating the second analyzer or the first analyzer, to reach switching
The purpose of double-view field.
A kind of an alternate embodiment of changeable dual field-of-view infrared optical system is：The optical system includes first
Analyzer, the first lens group, secondary mirror, primary mirror, the second lens group, the second analyzer and detector；
Object space light is anti-by primary mirror all the way first by being divided into the different light beam in two-way polarization direction after the first analyzer
Penetrate, secondary mirror is imaged at detector by after the second lens group again after reflecting；Another road by after the first lens group again by
It is imaged at detector after two lens groups；Two-way light is required for by the second lens group and all by the second analyzer ability
It is imaged onto on detector；
The inner ring of first analyzer is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutually hung down
Directly；The rear plated surface part reflective semitransparent film of the secondary mirror；Object space is so set to pass through the light of two-way optical system by the second analyzing
Polarization of light direction during mirror is different, and polarization direction is mutually perpendicular to, and is screened by rotating the second analyzer or the first analyzer
The light of detector image planes can be imaged onto, to reach the purpose of switching double-view field.
In the above-mentioned technical solutions, second analyzer is arranged in the light path between secondary mirror and detector image planes.
In the above-mentioned technical solutions, second analyzer could alternatively be AOTF or LCTF.
In the above-mentioned technical solutions, the detector is refrigeration mode detector.
The beneficial effects of the invention are as follows：
The changeable dual field-of-view infrared optical system that the present invention is provided, it is this kind of by proposing a kind of new Zoom structure
Zoom structure has simple structure, image stabilization, the advantage of easy switching.
The changeable dual field-of-view infrared optical system that the present invention is provided, the light path being made up of primary mirror and secondary mirror is big long-focus
The optical system of enlargement ratio, by the overall length of reflective this section of optical system of geometries shrink.It is made up of the first lens group
Light path is the optical system of the small enlargement ratio in big visual field, and optical system image planes position is zoomed out by the anti-optical texture form for taking the photograph remote type
Put, be consistent with long-focal distance optical system image planes position, it is ensured that when the second analyzer zoom is rotated, it is not necessary to move other
Part can just reach the purpose of zoom, while ensureing the definition of imaging.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
The changeable dual field-of-view infrared optical system structural representation that Fig. 1 is provided for the present invention.
The structural representation of an alternate embodiment for the changeable dual field-of-view infrared optical system that Fig. 2 is provided for the present invention
Figure.
Reference in figure is expressed as：
The analyzers of 1- first, the lens groups of 2- first, 3- secondary mirrors, 4- primary mirrors, image planes of 5-, the lens groups of 6- second, 7-
Two analyzers, 8- detectors.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
Referring to Fig. 1：The changeable dual field-of-view infrared optical system that the present invention is provided, including the first analyzer 1, the first lens
Group 2, secondary mirror 3,4, image planes 5 of primary mirror, the second lens group 6, the second analyzer 7 and detector 8；
Object space light is divided into the different light beam in two-way polarization direction after passing through the first analyzer 1 first, all the way by primary mirror 4
Reflection, secondary mirror 3 are imaged at an image planes 5 after reflecting, and another road is imaged at an image planes 5 by the first lens group 2；Second
By the second analyzer 7 be imaged onto in the image planes of detector 8 two pictures formed by image planes 5 by lens group 6；First inspection
The inner ring of polariscope 1 is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutually perpendicular to；After the secondary mirror 3
Plated surface part reflective semitransparent film；So making object space light can be imaged onto in an image planes by two-way optical system, by rotation
Second analyzer 7 or the first analyzer 1 screen the light that can be imaged onto detector image planes, to reach the purpose of switching double-view field.
, all a position of image planes 5, simply enlargement ratio is different for first lens group 2 and secondary mirror 3,4 two groups of imagings of primary mirror.In Fig. 1
Shown first lens group 2, the diagram of the second lens group 6 are only schematic diagram, and concrete structure is different according to real focal length, zoom ratio
Difference is designed；The position of second analyzer 7 is not required to be placed between the second lens group 6 and the image planes of detector 8, only need to be secondary
The purpose of screening light can be just reached in the middle of light path between mirror 3 and the image planes of detector 8.Second analyzer 7 is different for screening
The effect of polarization direction light, is not limited merely to use analyzer, can also be AOTF, LCTF or with filtering polarised light work(
The materials such as the crystal of energy.Detector 8 can be refrigeration mode detector, and cold door screen matching can be accomplished by the second lens group 6
100%.
The changeable dual field-of-view infrared optical system that the present invention is provided, the light path being made up of primary mirror 4 and secondary mirror 3 is long-focus
The optical system of big enlargement ratio, by the overall length of reflective this section of optical system of geometries shrink.It is made up of the first lens group 2
Light path be the small enlargement ratio in big visual field optical system, optical system image planes are zoomed out by the anti-optical texture form for taking the photograph remote type
Position, is consistent with long-focal distance optical system image planes position, it is ensured that when the second 7 zoom of analyzer is rotated, it is not necessary to mobile
Miscellaneous part can just reach the purpose of zoom, while ensureing the definition of imaging.
Referring to Fig. 2：A kind of an alternate embodiment of changeable dual field-of-view infrared optical system is：The optical system
Including the first analyzer 1, the first lens group 2, secondary mirror 3, primary mirror 4, the second lens group 6, the second analyzer 7 and detector 8；
Object space light is divided into the different light beam in two-way polarization direction after passing through the first analyzer 1 first, all the way by primary mirror 4
Reflection, secondary mirror 3 are imaged at detector 8 by after the second lens group 6 again after reflecting；Another road by after the first lens group 2 again
It is imaged at detector 8 by after the second lens group 6；Two-way light is required for by the second lens group 6 and all by second
Analyzer 7 can be just imaged onto on detector 8；
The inner ring of first analyzer 1 is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutual
Vertically；The rear plated surface part reflective semitransparent film of the secondary mirror 3；Object space is so set to pass through the light of two-way optical system by the second inspection
Polarization of light direction during polariscope 7 is different, and polarization direction is mutually perpendicular to, by rotating the second analyzer 7 or the first analyzer 1
Screening can be imaged onto the light of the image planes of detector 8, to reach the purpose of switching double-view field.
The second analyzer 7 can also be omitted in the embodiment above, by any one lens measure in the second lens group 6
Polarizing coating is plated in face, this lens is realized screening the purpose of polarised light.By rotating this lens or whole group lens, focal length is determined
Picture or big visual field picture reach image planes.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (5)
1. a kind of changeable dual field-of-view infrared optical system, it is characterised in that including：First analyzer (1), the first lens group
(2), secondary mirror (3), primary mirror (4), image planes (5), the second lens group (6), the second analyzer (7) and a detector (8)；
Object space light is divided into the different light beam in two-way polarization direction after passing through the first analyzer (1) first, all the way by primary mirror (4)
Image planes (5) place is imaged on after reflection, secondary mirror (3) reflection, another road is imaged on an image planes by the first lens group (2)
(5) place；
Two pictures formed by image planes (5) place are imaged onto detector (8) by the second lens group (6) by the second analyzer (7)
In image planes；
The inner ring of first analyzer (1) is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutually hung down
Directly；The rear plated surface part reflective semitransparent film of the secondary mirror (3)；So making object space light can be imaged onto one by two-way optical system
On secondary image planes (5), the light that can be imaged onto detector (8) image planes is screened by rotating the second analyzer (7) or the first analyzer (1)
Line, to reach the purpose of switching double-view field.
2. the changeable dual field-of-view infrared optical system described in claim 1, it is characterised in that another embodiment is：Institute
Stating optical system includes the first analyzer (1), the first lens group (2), secondary mirror (3), primary mirror (4), the second lens group (6), second
Analyzer (7) and detector (8)；
Object space light is divided into the different light beam in two-way polarization direction after passing through the first analyzer (1) first, all the way by primary mirror (4)
Again by being imaged on detector (8) place after the second lens group (6) after reflection, secondary mirror (3) reflection；Another road is by the first lens group
(2) again by being imaged on detector (8) place after the second lens group (6) after；Two-way light be required for by the second lens group (6) and
And all can be just imaged onto on detector (8) by the second analyzer (7)；
The inner ring of first analyzer (1) is respectively the analyzer in different polarization direction with outer shroud, and transmission direction is mutually hung down
Directly；The rear plated surface part reflective semitransparent film of the secondary mirror (3)；Object space is so set to pass through the light of two-way optical system by the second inspection
Polarization of light direction during polariscope (7) is different, and polarization direction is mutually perpendicular to, by rotating the second analyzer (7) or the first inspection
Polariscope (1) screening can be imaged onto the light of detector (8) image planes, to reach the purpose of switching double-view field.
3. changeable dual field-of-view infrared optical system according to claim 1 and 2, it is characterised in that second analyzing
Mirror (7) is arranged in the light path between secondary mirror (3) and detector (8) image planes.
4. changeable dual field-of-view infrared optical system according to claim 1 and 2, it is characterised in that second analyzing
Mirror (7) could alternatively be AOTF or LCTF.
5. changeable dual field-of-view infrared optical system according to claim 1 and 2, it is characterised in that the detector (8)
It is refrigeration mode detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114984.1A CN106772934A (en) | 2016-12-07 | 2016-12-07 | A kind of changeable dual field-of-view infrared optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114984.1A CN106772934A (en) | 2016-12-07 | 2016-12-07 | A kind of changeable dual field-of-view infrared optical system |
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| Publication Number | Publication Date |
|---|---|
| CN106772934A true CN106772934A (en) | 2017-05-31 |
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|---|---|---|---|
| CN201611114984.1A Pending CN106772934A (en) | 2016-12-07 | 2016-12-07 | A kind of changeable dual field-of-view infrared optical system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761751A (en) * | 2018-06-04 | 2018-11-06 | 凯迈（洛阳）测控有限公司 | A kind of more visual field medium-wave infrared optical systems and its visual field switching method |
| CN110927940A (en) * | 2019-12-19 | 2020-03-27 | 浙江舜宇光学有限公司 | Image pickup apparatus |
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| CN104035188A (en) * | 2014-06-10 | 2014-09-10 | 西南技术物理研究所 | Low-cost refracting-reflecting athermalizing medium wave infrared lens |
| CN203909294U (en) * | 2014-04-25 | 2014-10-29 | 南京先进激光技术研究院 | Receiving/transmitting coaxial optical antenna of synthetic aperture laser imaging radar |
| CN104502909A (en) * | 2014-12-19 | 2015-04-08 | 中国科学院长春光学精密机械与物理研究所 | Composite detection system with optics and millimeter-wave radar sharing aperture |
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2016
- 2016-12-07 CN CN201611114984.1A patent/CN106772934A/en active Pending
Patent Citations (4)
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| CN203705717U (en) * | 2013-12-16 | 2014-07-09 | 西安天和防务技术股份有限公司 | Optical lens capable of switching automatically double fields of view |
| CN203909294U (en) * | 2014-04-25 | 2014-10-29 | 南京先进激光技术研究院 | Receiving/transmitting coaxial optical antenna of synthetic aperture laser imaging radar |
| CN104035188A (en) * | 2014-06-10 | 2014-09-10 | 西南技术物理研究所 | Low-cost refracting-reflecting athermalizing medium wave infrared lens |
| CN104502909A (en) * | 2014-12-19 | 2015-04-08 | 中国科学院长春光学精密机械与物理研究所 | Composite detection system with optics and millimeter-wave radar sharing aperture |
Non-Patent Citations (1)
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| 王绪安: "双视场柔性切换成像系统设计", 《应用光学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761751A (en) * | 2018-06-04 | 2018-11-06 | 凯迈（洛阳）测控有限公司 | A kind of more visual field medium-wave infrared optical systems and its visual field switching method |
| CN110927940A (en) * | 2019-12-19 | 2020-03-27 | 浙江舜宇光学有限公司 | Image pickup apparatus |
| US11914127B2 (en) | 2019-12-19 | 2024-02-27 | Zhejiang Sunny Optics Co., Ltd | Camera apparatus |
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Application publication date: 20170531 |