CN205899129U - Optics despin mechanism - Google Patents
Optics despin mechanism Download PDFInfo
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- CN205899129U CN205899129U CN201620722974.5U CN201620722974U CN205899129U CN 205899129 U CN205899129 U CN 205899129U CN 201620722974 U CN201620722974 U CN 201620722974U CN 205899129 U CN205899129 U CN 205899129U
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- eyeglass
- optical system
- racemization
- dove
- prism
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Abstract
The utility model discloses an optics despin mechanism, this optics despin mechanism include scanning mirror, afocal optical system, DOVE racemization prism and assemble optical system, the scanning mirror for light beam to coming from the object space scans, and reflects afocal optical system with the incident light, afocal optical system for it reduces and passs through to DOVE racemization prism to carry out the bore with the refractive incident light of scanning mirror, DOVE racemization prism for receive the incident light of afocal optical system transmission, the outgoing is to assembling optical system after the reflection of bottom surface, assemble optical system for receive the incident light of DOVE racemization prism outgoing, and form images to the coke side. With the aid of the technical scheme of the utility model, can be when eliminating the speculum and look like to revolve, reduce optics despin mechanism's volume, reduce the degree of difficulty that design, processing were debug, the through engineering approaches demand of better adaptation system.
Description
Technical field
The utility model is related to optical field, particularly to a kind of optics racemization device.
Background technology
45 ° of rotating scanning mirrors scannings are a kind of the most frequently used optical mechaical scanning patterns, because its advantage is unique, so
The field extensive application such as Search tracking system, space large-range scanning imaging system.But, because this scan mode is made
The vertical line becoming object space does not keep constant angle with detector, and reflection image will produce rotation along optical axis, and directly application will be led
The outer visual field of axle is caused to cannot be carried out registration, so alignment and planar array detector all directly can not be coordinated with 45 ° of rotating scanning mirrors
Use.Accordingly, it would be desirable to add optics despinner in systems.Optics despinner commonly used in the prior art be " k " mirror, k mirror by
Three completely reflecting mirrors are constituted, and gain the name because its thrihedral reflector is in k word arrangement, the determination of its radius of gyration and length is more tired
Difficult；Simultaneously as k mirror is made up of 3 parts, globality poor, mirror finish quality and debug precision and even more there are technological difficulties.
Utility model content
Volume in order to solve the problems, such as k mirror in prior art racemization device is big, difficult processing, and the utility model provides one
Plant optics racemization device.
A kind of optics racemization device that the utility model provides, including scanning mirror, non-focus optical system, dove racemization rib
Mirror and convergence optical system,
Described scanning mirror, for being scanned to the light beam from object space, and by refracting light incident to non-focus optical system；
Described non-focus optical system, the incident light for reflecting described scanning mirror carries out bore to be reduced and is transmitted through dove
Racemization prism；
Described dove racemization prism, for receiving the incident light of non-focus optical system transmission, after bottom reflection, outgoing is extremely
Convergence optical system；
Described convergence optical system, for receiving the incident light of dove racemization prism outgoing, and is imaged to focal plane.
The beneficial effects of the utility model are as follows:
The utility model passes through, using size is little, good integrity dove racemization prism, to solve prior art racemization dress
The volume putting middle k mirror is big, the problem of difficult processing, can reduce the body of optics racemization device while eliminating the rotation of speculum picture
Long-pending, reduce design, process the difficulty debug, the through engineering approaches demand of more preferable adaptive system.
Brief description
Fig. 1 is the structural representation of the utility model device embodiment optics racemization device；
Fig. 2 is the structural representation of the optics racemization device of the utility model device embodiment example 1；
Fig. 3 is the optical transfer function curve map of the utility model device embodiment example 1；
Fig. 4 is the structural representation of the optics racemization device of the utility model device embodiment example 2；
Fig. 5 is the optical transfer function curve map of the utility model device embodiment example 2；
Wherein, scanning mirror 10, non-focus optical system 12, dove racemization prism 14 and convergence optical system 16, the first mirror
Piece 1, the second eyeglass 2, the 3rd eyeglass 3, the 4th eyeglass 4, the 5th eyeglass 5, the 6th eyeglass 6, the 7th eyeglass 7.
Specific embodiment
Volume in order to solve the problems, such as k mirror in prior art racemization device is big, difficult processing, and the utility model provides one
Plant optics racemization device and its using method, below in conjunction with accompanying drawing and embodiment, the utility model is carried out detailed further
Explanation.It should be appreciated that specific embodiment described herein is only in order to explain the utility model, do not limit this practicality new
Type.
Device embodiment
According to device embodiment of the present utility model, there is provided a kind of optics racemization device, Fig. 1 is the utility model device
The structural representation of embodiment optics racemization device, as shown in figure 1, the optics racemization dress according to the utility model device embodiment
Put including scanning mirror 10, non-focus optical system 12, dove racemization prism 14 and convergence optical system 16, described scanning mirror, no
The optical axis coincidence of focus optical system, dove racemization prism and convergence optical system, constitutes the light of described optics racemization device
Axle.
Described scanning mirror 10, for being scanned to the light beam from object space, and by refracting light incident to no burnt optical system
System.
Specifically, described scanning mirror 10 is 45 ° of scanning mirrors.
Described non-focus optical system 12, the incident light for reflecting described scanning mirror carries out bore to be reduced and is transmitted through
Dove racemization prism.
Specifically, described non-focus optical system 12 is transmission-type or reflective optical system.
More specific, described non-focus optical system 12 includes the first eyeglass, the second eyeglass, the 3rd eyeglass and the 4th
Eyeglass；
Described first eyeglass, the incident light for receiving scanning mirror refraction carries out being transmitted through the second eyeglass after bore reduces；
Described second eyeglass, the incident light for receiving the first lens transmission carries out being transmitted through the 3rd mirror after bore reduces
Piece；
Described 3rd eyeglass, the incident light for receiving the second lens transmission carries out being transmitted through the 4th mirror after bore reduces
Piece；
Described 4th eyeglass, the incident light for receiving the 3rd lens transmission carries out being transmitted through dove racemization after bore reduces
Prism.
More specific, described non-focus optical system 12 can also including two piece of the 5th eyeglass, one piece of the 6th eyeglass,
And one piece of the 7th eyeglass；
Described 5th eyeglass, the incident light for receiving scanning mirror refraction carries out refracting to the 6th eyeglass after bore reduces；
Described 6th eyeglass, the incident light for receiving two piece of the 5th eyeglass refraction carries out being transmitted through the 7th after bore reduces
Eyeglass；
Described 7th eyeglass, the incident light for receiving the 6th eyeglass refraction carries out being transmitted through dove racemization after bore reduces
Prism.
Described dove racemization prism 14, for receiving the incident light of non-focus optical system transmission, outgoing after bottom reflection
To convergence optical system.
Specifically, the material of described dove racemization prism 14 is high permeability and the little material of absorption coefficient, more specific
, it is that absorption coefficient is less than 0.027cm-1Material, such as germanium single crystal.The entrance pupil of described dove racemization prism and no burnt optical system
The emergent pupil of system is consistent.
Specifically, described scanning mirror and dove racemization prism all rotate around optical axis, the rotation side of described dove racemization prism
To contrary with scanning mirror, the rotary speed of described dove racemization prism is the half of scanning mirror.
Described convergence optical system 16, for receiving the incident light of dove racemization prism outgoing, and is imaged to focal plane.
Compared with k mirror, the design principle of dove (road prestige) prism is simple, and the precision processed and debug is easily controlled, and such as
How about how reducing the size of dove prism, thus reducing the size of instrument further, reducing the moment to motor, simultaneously with system
Preferably mate, meet space tasks and the requirement of military mission, be the key technology needing to solve.Optics of the present utility model
Racemization device, on the premise of ensureing system optics performance and high-quality as matter, realizes no as searching element on a large scale under the conditions of rotation
And imaging.The utility model passes through to study light path characteristic and the method for designing such as system aberration correction, match materials of dove prism,
Achieve wide scope wave band aberration correction, as of fine quality good, the optics racemization device of frame stabilization.
In order to better illustrate the structure of the utility model optics racemization device, provide example 1 and example 2.
Example 1
The structural representation of the optics racemization device of the utility model examples Example 1 is as shown in Fig. 2 along optical axis advance side
To including 45 ° of scanning mirrors, non-focus optical system, dove racemization prism and convergence optical system successively.Wherein, 45 ° of scanning mirrors
M1, the optical axis coincidence of non-focus optical system h1, dove racemization prism d1 and convergence optical system h2, constitute the light of this optical system
Axle.Non-focus optical system h1 is the transmission-type telescope of 3 times of enlargement ratio, and the beam size being incident to dove prism d1 is reduced
3 times, thus being substantially reduced accessory size and the radius of gyration of dove prism d1, further can reduced equipment sizes, reduce to electricity
The load of machine.Table 1 is the device optical parametric table of the utility model examples Example 1.
The optical device system parameter of the utility model examples 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, the interval of described first eyeglass to the second eyeglass
For 43.5mm, the 42.5mm that is spaced apart of described second eyeglass to the 3rd eyeglass, described 3rd eyeglass being spaced apart to the 4th eyeglass
67.4mm, described 4th eyeglass is spaced apart 40mm to dove racemization prism.
The optical imaging concept of the utility model examples Example 1 is: from the collimated light beam of object space, through 45 ° of scanning mirrors
M1 is reflected into non-focus optical system h1, by 4 diaphotoscopes in non-focus optical system, forms bore and reduces 3 times flat
Row light beam.Wherein, the enlargement ratio of non-focus optical system determines the beam size through non-focus optical system outgoing.Collimated light beam
It is incident to dove optical prism d1, through bottom reflection, by the another side outgoing of dove prism.Finally concentrated optical system imaging
To focal plane.Non-focus optical system and convergence optical system can be designed according to system situation.
The Optical devices of the utility model examples Example 1, can form the optical imagery of 360 ° of pitching, and image stabilization is no
As rotation, the transmission function of optical system is more than 0.4@20lp/mm.The optical transfer function of the utility model examples Example 1 is bent
As shown in figure 3, in figure 3, abscissa spatial frequency (cycles/mm) represents the spatial frequency of object space to line chart,
Ordinate modulation represents normalized transfer function value, and as can be seen from Figure 3 optical system imaging quality is good.
Example 2
The structural representation of the optics racemization device of the utility model examples Example 2 is as shown in figure 4, along optical axis advance side
To including 45 ° of scanning mirrors, non-focus optical system, dove racemization prism and convergence optical system successively.Wherein, 45 ° of scanning mirrors
M1, the optical axis coincidence of non-focus optical system h1, dove racemization prism d1 and convergence optical system h2, constitute the light of this optical system
Axle.Non-focus optical system h1 is the autocollimator of 5 times of enlargement ratio, and the beam size being incident to dove prism d1 is reduced
5 times, thus being substantially reduced accessory size and the radius of gyration of dove prism d1, further can reduced equipment sizes, reduce to electricity
The load of machine.Table 2 is the device optical parametric table of the utility model examples Example 2.
The optical device system parameter of the utility model examples 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, the interval of described 5th eyeglass to the 6th eyeglass
For 188mm, the 250mm that is spaced apart of described 6th eyeglass to the 7th eyeglass, the interval of described 7th eyeglass to dove racemization prism
For 79.2mm.
The optical imaging concept of the utility model examples Example 2 is:
From the collimated light beam of object space, it is reflected into non-focus optical system h1 through 45 ° of scanning mirror m1, by no burnt optical system
Speculum in system and diaphotoscope, form the collimated light beam that bore reduces 5 times.Wherein, the enlargement ratio of non-focus optical system
Determine the beam size through non-focus optical system outgoing.Parallel beam incident to dove optical prism d1, through bottom reflection, by
The another side outgoing of dove prism.Finally concentrated optical system imaging is to focal plane.Non-focus optical system and convergence optical system
Can be designed according to system situation.
The Optical devices of the utility model examples Example 2, can form the optical imagery of 360 ° of pitching, and image stabilization is no
As rotation.The optical transfer function curve map of the utility model examples Example 2 as shown in figure 5, in Figure 5, abscissa spatial
Frequency (cycles/mm) represents the spatial frequency of object space, and ordinate modulation represents normalized transfer function
Value, as can be seen from Figure 5 optical system imaging quality is good.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to the utility model
New spirit and scope.So, if of the present utility model these modification and modification belong to the utility model claim and
Within the scope of its equivalent technologies, then the utility model is also intended to comprise these changes and modification.
Claims (9)
1. a kind of optics racemization device is it is characterised in that include scanning mirror, non-focus optical system, dove racemization prism, Yi Jihui
Poly- optical system,
Described scanning mirror, for being scanned to the light beam from object space, and by refracting light incident to non-focus optical system；
Described non-focus optical system, the incident light for reflecting described scanning mirror carries out bore to be reduced and is transmitted through dove racemization
Prism；
Described dove racemization prism, for receiving the incident light of non-focus optical system transmission, after bottom reflection, outgoing is to convergence
Optical system；
Described convergence optical system, for receiving the incident light of dove racemization prism outgoing, and is imaged to focal plane.
2. optics racemization device as claimed in claim 1 is it is characterised in that described scanning mirror, non-focus optical system, dove disappear
Rotation prism and the optical axis coincidence of convergence optical system, constitute the optical axis of described optics racemization device.
3. optics racemization device as claimed in claim 1 is it is characterised in that described scanning mirror and dove racemization prism are all around light
Axle rotates, and the direction of rotation of described dove racemization prism is contrary with scanning mirror, and the rotary speed of described dove racemization prism is to sweep
Retouch the half of mirror.
4. optics racemization device as claimed in claim 1 is it is characterised in that described scanning mirror is 45 ° of scanning mirrors.
5. optics racemization device as claimed in claim 1 is it is characterised in that described non-focus optical system is transmission-type or reflection
Formula optical system.
6. optics racemization device as claimed in claim 1 is it is characterised in that the material of described dove racemization prism is to absorb system
Number is less than 0.027cm-1Material.
7. optics racemization device as claimed in claim 1 is it is characterised in that the entrance pupil of described dove racemization prism and no burnt light
The emergent pupil of system is consistent.
8. optics racemization device as claimed in claim 1 it is characterised in that described non-focus optical system include the first eyeglass,
Second eyeglass, the 3rd eyeglass and the 4th eyeglass；
Described first eyeglass, the incident light for receiving scanning mirror refraction carries out being transmitted through the second eyeglass after bore reduces；
Described second eyeglass, the incident light for receiving the first lens transmission carries out being transmitted through the 3rd eyeglass after bore reduces；
Described 3rd eyeglass, the incident light for receiving the second lens transmission carries out being transmitted through the 4th eyeglass after bore reduces；
Described 4th eyeglass, the incident light for receiving the 3rd lens transmission carries out being transmitted through dove racemization rib after bore reduces
Mirror.
9. optics racemization device as claimed in claim 1 is it is characterised in that described non-focus optical system includes two piece of the 5th mirror
Piece, one piece of the 6th eyeglass and one piece of the 7th eyeglass；
Described 5th eyeglass, the incident light for receiving scanning mirror refraction carries out refracting to the 6th eyeglass after bore reduces；
Described 6th eyeglass, the incident light for receiving two piece of the 5th eyeglass refraction carries out being transmitted through the 7th mirror after bore reduces
Piece；
Described 7th eyeglass, the incident light for receiving the 6th eyeglass refraction carries out being transmitted through dove racemization rib after bore reduces
Mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722974.5U CN205899129U (en) | 2016-07-11 | 2016-07-11 | Optics despin mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722974.5U CN205899129U (en) | 2016-07-11 | 2016-07-11 | Optics despin mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN205899129U true CN205899129U (en) | 2017-01-18 |
Family
ID=57772160
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620722974.5U Active CN205899129U (en) | 2016-07-11 | 2016-07-11 | Optics despin mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954871A (en) * | 2016-07-11 | 2016-09-21 | 中国电子科技集团公司第十研究所 | Optical despin device and use method thereof |
| CN109343194A (en) * | 2018-12-18 | 2019-02-15 | 中国电子科技集团公司第十研究所 | A method of the girdle prisms such as utilize to disappear image rotation |
-
2016
- 2016-07-11 CN CN201620722974.5U patent/CN205899129U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954871A (en) * | 2016-07-11 | 2016-09-21 | 中国电子科技集团公司第十研究所 | Optical despin device and use method thereof |
| CN109343194A (en) * | 2018-12-18 | 2019-02-15 | 中国电子科技集团公司第十研究所 | A method of the girdle prisms such as utilize to disappear image rotation |
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| GR01 | Patent grant |