CN105954871A - Optical despin device and use method thereof - Google Patents
Optical despin device and use method thereof Download PDFInfo
- Publication number
- CN105954871A CN105954871A CN201610542124.1A CN201610542124A CN105954871A CN 105954871 A CN105954871 A CN 105954871A CN 201610542124 A CN201610542124 A CN 201610542124A CN 105954871 A CN105954871 A CN 105954871A
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- China
- Prior art keywords
- racemization
- eyeglass
- dove
- optical system
- prism
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
Abstract
The invention discloses an optical despin device and a use method thereof. The optical despin device comprises a scanning mirror, an afocal optical system, a DOVE despin prism and a convergence optical system. The scanning mirror is used for scanning light beams from an object side and refracting incident light to the afocal optical system. The afocal optical system is used for performing diameter reduction on the incident light refracted by the scanning mirror and transmitting the incident light to the DOVE despin prism. The DOVE despin prism is used for receiving the incident light transmitted by the afocal optical system, and the incident light is emergent to the convergence optical system through reflection of a bottom surface. The convergence optical system is used for receiving the incident light emergent out of the DOVE despin prism and imaging the incident light to a focal plane. With application of the technical scheme, reflecting mirror image spinning can be eliminated, the size of the optical despin device can be reduced, the difficulty of design, processing and adjustment can be reduced and thus the optical despin device can be better adaptive to the engineering requirements of the system.
Description
Technical field
The present invention relates to optical field, particularly to a kind of optics racemization device and using method thereof.
Background technology
45 ° of rotating scanning mirrors scannings are a kind of the most frequently used optical mechaical scanning patterns, owing to its advantage is unique,
So in field extensive application such as Search tracking system, space large-range scanning imaging systems.But,
Owing to this scan mode causes the vertical line of object space not keep constant angle with detector, reflection image will
Producing along optical axis and rotate, directly application will cause the outer visual field of axle to cannot be carried out registration, so alignment dough-making powder battle array is visited
Survey device all can not with 45 ° of rotating scanning mirrors directly with the use of.Accordingly, it would be desirable to add light in systems
Learn despinner.Optics despinner commonly used in the prior art is " K " mirror, and K mirror is made up of three completely reflecting mirrors,
Gaining the name because its thrihedral reflector is K word arrangement, the determination of its radius of gyration and length is relatively difficult；Meanwhile,
Owing to K mirror is made up of 3 parts, globality is poor, mirror finish quality and debug precision and there is technology especially
Difficult point.
Summary of the invention
In order to solve in prior art racemization device, the volume of K mirror is big, the problem of difficult processing, and the present invention provides
A kind of optics racemization device and using method thereof.
A kind of optics racemization device that the present invention provides, disappears including scanning mirror, non-focus optical system, DOVE
Rotation prism and convergence optical system,
Described scanning mirror, for being scanned the light beam from thing side, and by refracting light incident to without burnt light
System；
Described non-focus optical system, the incident illumination for being reflected by described scanning mirror carries out bore to be reduced and transmission
To DOVE racemization prism；
Described DOVE racemization prism, for receiving the incident illumination of non-focus optical system transmission, through bottom reflection
Rear outgoing is to convergence optical system；
Described convergence optical system, for receiving the incident illumination of DOVE racemization prism outgoing, and imaging is to burnt
Face.
Present invention also offers the using method of a kind of optics racemization device, described scanning mirror and DOVE racemization
Prism all rotates around optical axis, and the direction of rotation of described DOVE racemization prism is contrary with scanning mirror, described
The half that rotary speed is scanning mirror of DOVE racemization prism.
Beneficial effects of the present invention is as follows:
The present invention is little by employing size, the DOVE racemization prism of good integrity, solves prior art and disappears
In cyclone, the volume of K mirror is big, the problem of difficult processing, it is possible to while eliminating the rotation of reflecting mirror picture, reduce
The volume of optics racemization device, reduces design, processes the difficulty debug, the through engineering approaches of more preferable adaptive system
Demand.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention embodiment optics racemization device；
Fig. 2 is the structural representation of the optics racemization device of apparatus of the present invention examples Example 1；
Fig. 3 is the optical transfer function curve chart of apparatus of the present invention examples Example 1；
Fig. 4 is the structural representation of the optics racemization device of apparatus of the present invention examples Example 2；
Fig. 5 is the optical transfer function curve chart of apparatus of the present invention examples Example 2；
Wherein, scanning mirror 10, non-focus optical system 12, DOVE racemization prism 14 and collecting optics
System the 16, first eyeglass the 1, second eyeglass 2, the 3rd eyeglass 3, the 4th eyeglass 4, the 5th eyeglass 5,
Six eyeglass the 6, the 7th eyeglasses 7.
Detailed description of the invention
In order to solve in prior art racemization device, the volume of K mirror is big, the problem of difficult processing, and the present invention provides
A kind of optics racemization device and using method thereof, below in conjunction with accompanying drawing and embodiment, carried out the present invention
Further describe.Should be appreciated that specific embodiment described herein only in order to explain the present invention,
Do not limit the present invention.
Device embodiment
According to assembly of the invention embodiment, it is provided that a kind of optics racemization device, Fig. 1 is apparatus of the present invention
The structural representation of embodiment optics racemization device, as it is shown in figure 1, according to the light of apparatus of the present invention embodiment
Learn racemization device include scanning mirror 10, non-focus optical system 12, DOVE racemization prism 14 and assemble
Optical system 16, described scanning mirror, non-focus optical system, DOVE racemization prism and convergence optics
The optical axis coincidence of system, constitutes the optical axis of described optics racemization device.
Described scanning mirror 10, for being scanned the light beam from thing side, and by refracting light incident to without burnt
Optical system.
Concrete, described scanning mirror 10 is 45 ° of scanning mirrors.
Described non-focus optical system 12, carries out bore for the incident illumination that reflected by described scanning mirror and reduces and thoroughly
It is incident upon DOVE racemization prism.
Concrete, described non-focus optical system 12 is transmission-type or reflective optical system.
More specific, described non-focus optical system 12 include the first eyeglass, the second eyeglass, the 3rd eyeglass,
And the 4th eyeglass；
Described first eyeglass, carries out being transmitted through second after bore reduces for receiving the incident illumination of scanning mirror refraction
Eyeglass；
Described second eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the first lens transmission
Three eyeglasses；
Described 3rd eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the second lens transmission
Four eyeglasses；
Described 4th eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the 3rd lens transmission
DOVE racemization prism.
More specific, described non-focus optical system 12 can also include two piece of the 5th eyeglass, one piece
6th eyeglass and one piece of the 7th eyeglass；
Described 5th eyeglass, carries out refracting to the 6th after bore reduces for receiving the incident illumination of scanning mirror refraction
Eyeglass；
Described 6th eyeglass, the incident illumination reflected for receiving two piece of the 5th eyeglass carries out bore and reduces rear transmission
To the 7th eyeglass；
Described 7th eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the 6th eyeglass refraction
DOVE racemization prism.
Described DOVE racemization prism 14, for receiving the incident illumination of non-focus optical system transmission, through bottom surface
After reflection, outgoing is to convergence optical system.
Concrete, the material of described DOVE racemization prism 14 is high permeability and the little material of absorptance,
More specific, for absorptance less than 0.027cm-1Material, such as germanium single crystal.Described DOVE disappears
The entrance pupil of rotation prism is consistent with the emergent pupil of non-focus optical system.
Concrete, described scanning mirror and DOVE racemization prism all rotate around optical axis, described DOVE racemization
The direction of rotation of prism is contrary with scanning mirror, rotary speed is scanning mirror the one of described DOVE racemization prism
Half.
Described convergence optical system 16, for receiving the incident illumination of DOVE racemization prism outgoing, and imaging
To focal plane.
Compared with K mirror, the design principle of DOVE (road prestige) prism is simple, and the precision processed and debug is held
Easy to control, and the most how to reduce the size of DOVE prism, thus reduce the size of instrument further, fall
The low moment to motor, preferably mates with system simultaneously, meets the requirement of space tasks and military mission,
It it is the key technology needing to solve.The optics racemization device of the present invention, is ensureing system optics performance and high-quality
Amount picture element on the premise of, it is achieved without as rotation under the conditions of search element and imaging on a large scale.The present invention is by research
The methods for designing such as the light path characteristic of DOVE prism and system aberration correction, match materials, it is achieved that wide scope
Wave band aberration correction, picture element is excellent, the optics racemization device of frame stabilization.
In order to better illustrate the structure of optics racemization device of the present invention, provide example 1 and example 2.
Example 1
The structural representation of the optics racemization device of embodiment of the present invention example 1 is as in figure 2 it is shown, along before optical axis
Enter direction, include 45 ° of scanning mirrors, non-focus optical system, DOVE racemization prism and convergence optics successively
System.Wherein, 45 ° of scanning mirror M1, non-focus optical system H1, DOVE racemization prism D1 and collecting optics
The optical axis coincidence of system H2, constitutes the optical axis of this optical system.Non-focus optical system H1 is enlargement ratio 3
Transmission-type telescope again, reduces 3 times by the beam size being incident to DOVE prism D1, thus significantly
Reduce accessory size and the radius of gyration of DOVE prism D1, further can reduced equipment sizes, it is right to reduce
The load of motor.Table 1 is the device optical parametric table of embodiment of the present invention example 1.
The optical device system parameter of embodiment of the present invention example 1 is as follows:
System service band: 3～5 μm；
System focal: 150mm
System F number: 2
Detector: 320 × 256；
Pixel dimension: 25 μm.
Table 1
In Table 1, described scanning mirror and the first eyeglass be spaced apart 70mm, described first eyeglass is to the second mirror
Sheet be spaced apart 43.5mm, the 42.5mm that is spaced apart of described second eyeglass to the 3rd eyeglass, described 3rd mirror
Sheet is to the 67.4mm that is spaced apart of the 4th eyeglass, described 4th eyeglass being spaced apart to DOVE racemization prism
40mm。
The optical imaging concept of embodiment of the present invention example 1 is: from the collimated light beam of thing side, through 45 ° of scannings
Mirror M1 is reflected into non-focus optical system H1, by 4 diaphotoscopies in non-focus optical system, is formed
Bore reduces the collimated light beam of 3 times.Wherein, the enlargement ratio of non-focus optical system determines through without burnt light
Learn the beam size of system exit.Parallel beam incident is to DOVE optical prism D1, through bottom reflection,
By the another side outgoing of DOVE prism.Last concentrated optical system imaging is to focal plane.Non-focus optical system
Can be designed according to system situation with convergence optical system.
The Optical devices of embodiment of the present invention example 1, can form the optical imagery of pitching 360 °, and image is steady
Fixed without as rotation, the transmission function of optical system is more than 0.4@20lp/mm.The light of embodiment of the present invention example 1
Learn transfer curve figure as it is shown on figure 3, in figure 3, abscissa SPATIAL
FREQUENCY (CYCLES/MM) represents the spatial frequency of object space, vertical coordinate MODULATION
Representing normalized transfer function value, as can be seen from Figure 3 optical system imaging quality is good.
Example 2
The structural representation of the optics racemization device of embodiment of the present invention example 2 as shown in Figure 4, before optical axis
Enter direction, include 45 ° of scanning mirrors, non-focus optical system, DOVE racemization prism and convergence optics successively
System.Wherein, 45 ° of scanning mirror M1, non-focus optical system H1, DOVE racemization prism D1 and collecting optics
The optical axis coincidence of system H2, constitutes the optical axis of this optical system.Non-focus optical system H1 is enlargement ratio 5
Autocollimator again, reduces 5 times by the beam size being incident to DOVE prism D1, thus significantly
Reduce accessory size and the radius of gyration of DOVE prism D1, further can reduced equipment sizes, it is right to reduce
The load of motor.Table 2 is the device optical parametric table of embodiment of the present invention example 2.
The optical device system parameter of embodiment of the present invention example 2 is as follows:
System service band: 3～5 μm；
System focal: 150mm
System F number: 2
Detector: 320 × 256；
Pixel dimension: 25 μm.
Table 2
In table 2, described scanning mirror and the 5th eyeglass be spaced apart 70mm, described 5th eyeglass is to the 6th mirror
Sheet be spaced apart 188mm, the 250mm that is spaced apart of described 6th eyeglass to the 7th eyeglass, described 7th mirror
Sheet is spaced apart 79.2mm to DOVE racemization prism.
The optical imaging concept of embodiment of the present invention example 2 is:
From the collimated light beam of thing side, it is reflected into non-focus optical system H1 through 45 ° of scanning mirror M1, passes through
Reflecting mirror in non-focus optical system and diaphotoscope, form bore and reduce the collimated light beam of 5 times.Wherein,
The enlargement ratio of non-focus optical system determines the beam size through non-focus optical system outgoing.Collimated light beam enters
It is incident upon DOVE optical prism D1, through bottom reflection, by the another side outgoing of DOVE prism.Warp after
Convergence optical system is imaged onto focal plane.Non-focus optical system and convergence optical system can be carried out according to system situation
Design.
The Optical devices of embodiment of the present invention example 2, can form the optical imagery of pitching 360 °, and image is steady
Fixed without as rotation.The optical transfer function curve chart of embodiment of the present invention example 2 as it is shown in figure 5, in Figure 5,
Abscissa SPATIAL FREQUENCY (CYCLES/MM) represents the spatial frequency of object space, vertical coordinate
MODULATION represents normalized transfer function value, as can be seen from Figure 5 optical system imaging quality
Well.
Embodiment of the method
Present invention also offers the using method of a kind of optics racemization device, described scanning mirror and DOVE racemization
Prism all rotates around optical axis, and the direction of rotation of described DOVE racemization prism is contrary with scanning mirror, described
The half that rotary speed is scanning mirror of DOVE racemization prism.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an optics racemization device, it is characterised in that include scanning mirror, non-focus optical system, DOVE
Racemization prism and convergence optical system,
Described scanning mirror, for being scanned the light beam from thing side, and by refracting light incident to without burnt light
System；
Described non-focus optical system, the incident illumination for being reflected by described scanning mirror carries out bore to be reduced and transmission
To DOVE racemization prism；
Described DOVE racemization prism, for receiving the incident illumination of non-focus optical system transmission, through bottom reflection
Rear outgoing is to convergence optical system；
Described convergence optical system, for receiving the incident illumination of DOVE racemization prism outgoing, and imaging is to burnt
Face.
2. optics racemization device as claimed in claim 1, it is characterised in that described scanning mirror, nothing are burnt
Optical system, DOVE racemization prism and the optical axis coincidence of convergence optical system, constitute described optics and disappear
The optical axis of cyclone.
3. optics racemization device as claimed in claim 1, it is characterised in that described scanning mirror and DOVE
Racemization prism all rotates around optical axis, and the direction of rotation of described DOVE racemization prism is contrary with scanning mirror, described
The half that rotary speed is scanning mirror of DOVE racemization prism.
4. optics racemization device as claimed in claim 1, it is characterised in that described scanning mirror is 45 °
Scanning mirror.
5. optics racemization transposition as claimed in claim 1, it is characterised in that described non-focus optical system
For transmission-type or reflective optical system.
6. optics racemization device as claimed in claim 1, it is characterised in that described DOVE racemization rib
The material of mirror is that absorptance is less than 0.027cm-1Material.
7. optics racemization device as claimed in claim 1, it is characterised in that described DOVE racemization rib
The entrance pupil of mirror is consistent with the emergent pupil of non-focus optical system.
8. optics racemization device as claimed in claim 1, it is characterised in that described non-focus optical system
Including the first eyeglass, the second eyeglass, the 3rd eyeglass and the 4th eyeglass；
Described first eyeglass, carries out being transmitted through second after bore reduces for receiving the incident illumination of scanning mirror refraction
Eyeglass；
Described second eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the first lens transmission
Three eyeglasses；
Described 3rd eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the second lens transmission
Four eyeglasses；
Described 4th eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the 3rd lens transmission
DOVE racemization prism.
9. optics racemization device as claimed in claim 1, it is characterised in that described non-focus optical system
Including two piece of the 5th eyeglass, one piece of the 6th eyeglass and one piece of the 7th eyeglass；
Described 5th eyeglass, carries out refracting to the 6th after bore reduces for receiving the incident illumination of scanning mirror refraction
Eyeglass；
Described 6th eyeglass, the incident illumination reflected for receiving two piece of the 5th eyeglass carries out bore and reduces rear transmission
To the 7th eyeglass；
Described 7th eyeglass, carries out being transmitted through after bore reduces for receiving the incident illumination of the 6th eyeglass refraction
DOVE racemization prism.
10. the using method of a claim 1～9 any one optics racemization device, it is characterised in that institute
State scanning mirror and DOVE racemization prism all rotates around optical axis, the direction of rotation of described DOVE racemization prism
Contrary with scanning mirror, the half that rotary speed is scanning mirror of described DOVE racemization prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542124.1A CN105954871A (en) | 2016-07-11 | 2016-07-11 | Optical despin device and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542124.1A CN105954871A (en) | 2016-07-11 | 2016-07-11 | Optical despin device and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105954871A true CN105954871A (en) | 2016-09-21 |
Family
ID=56899744
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610542124.1A Pending CN105954871A (en) | 2016-07-11 | 2016-07-11 | Optical despin device and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989188A (en) * | 2019-12-18 | 2020-04-10 | 华中科技大学 | K mirror optical system adjusting method |
| CN111598784A (en) * | 2020-04-23 | 2020-08-28 | 中国科学院上海技术物理研究所 | Image rotation correction method based on 45-degree mirror wide-width multi-element parallel scanning imaging |
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| US5604622A (en) * | 1993-01-14 | 1997-02-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | Laser scanning device |
| CN204188876U (en) * | 2014-12-01 | 2015-03-04 | 中国航天科工集团第三研究院第八三五八研究所 | A kind of surgical operation microscope assistant's mirror optics racemization system |
| CN205899129U (en) * | 2016-07-11 | 2017-01-18 | 中国电子科技集团公司第十一研究所 | Optics despin mechanism |
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2016
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5604622A (en) * | 1993-01-14 | 1997-02-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | Laser scanning device |
| CN204188876U (en) * | 2014-12-01 | 2015-03-04 | 中国航天科工集团第三研究院第八三五八研究所 | A kind of surgical operation microscope assistant's mirror optics racemization system |
| CN205899129U (en) * | 2016-07-11 | 2017-01-18 | 中国电子科技集团公司第十一研究所 | Optics despin mechanism |
Non-Patent Citations (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989188A (en) * | 2019-12-18 | 2020-04-10 | 华中科技大学 | K mirror optical system adjusting method |
| CN110989188B (en) * | 2019-12-18 | 2021-03-26 | 华中科技大学 | K mirror optical system adjusting method |
| CN111598784A (en) * | 2020-04-23 | 2020-08-28 | 中国科学院上海技术物理研究所 | Image rotation correction method based on 45-degree mirror wide-width multi-element parallel scanning imaging |
| CN111598784B (en) * | 2020-04-23 | 2022-08-02 | 中国科学院上海技术物理研究所 | Image rotation correction method based on 45-degree mirror wide-width multi-element parallel scanning imaging |
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Application publication date: 20160921 |