CN206002781U - A kind of collimating optical system - Google Patents
A kind of collimating optical system Download PDFInfo
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- CN206002781U CN206002781U CN201620918223.0U CN201620918223U CN206002781U CN 206002781 U CN206002781 U CN 206002781U CN 201620918223 U CN201620918223 U CN 201620918223U CN 206002781 U CN206002781 U CN 206002781U
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- optical system
- mirror
- collimating optical
- secondary mirror
- primary mirror
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Abstract
The utility model discloses a kind of collimating optical system, this collimating optical system, including the primary mirror of same optical axis, secondary mirror, cone and infrared target, the radius of infrared target shines secondary mirror along optical axis, and radius is reflexed to primary mirror by secondary mirror；The reflection light that primary mirror receives secondary mirror is transformed into collimated ray outgoing；Cone, for the veiling glare of unexpected visual field.By means of the new technical scheme of this adaptation, solve the problems, such as that collimating optical system complexity in prior art, aberration disaster eliminate and design and debug difficulty, there is small volume, lightweight advantage, and solve the problems, such as that in existing collimating optical system, aberration is big using Cassegrain's reflective optical system.
Description
Technical field
This utility model is related to optical field, particularly to a kind of collimating optical system.
Background technology
Infrared airborne photoelectric search tracking system, under flying condition, needs to stare into for infrared in Search tracking system
As system provides Long Range Moving Target source, find distant object in order to system focusing in time with quick.Common is infrared
The most volume of target simulator is big, and performance indications comprehensively, are particularly suited for testing measuring apparatus, are not suitable for airborne photoelectric and set
Standby.
The wavelength band of the optical alignment system of IR imaging target simulator is wider, and aberration is larger, so transmission-type mesh
The optical alignment system of mark simulator generally requires from 5 or more poly-lens as initiating structure, makes system complex, and
Available broadband infra-red material is also very limited, increased design and resetting difficulty, and current IR imaging target
The optical alignment system of simulator has that aberration disaster eliminates.
Utility model content
In order to solve collimating optical system complexity in prior art, the elimination of aberration disaster and design and debug difficulty
Problem, this utility model provides a kind of collimating optical system.
This utility model provides a kind of collimating optical system, including the primary mirror of same optical axis, secondary mirror, cone and infrared target
Mark,
The radius of described infrared target shines secondary mirror along optical axis,
Described radius is reflexed to primary mirror by described secondary mirror；
The reflection light that described primary mirror receives secondary mirror is transformed into collimated ray outgoing；
Described cone, for eliminating the veiling glare of unexpected visual field.
The beneficial effects of the utility model are as follows：
This utility model passes through to provide a kind of collimating optical system, solve in prior art collimating optical system complicated,
Aberration disaster eliminates and design and the problem debuging difficulty, has small volume, lightweight advantage, and adopts Cassegrain
Reflective optical system solves the problems, such as that in existing collimating optical system, aberration is big.
Brief description
Fig. 1 is the structural representation of the collimating optical system of this utility model embodiment；
The optical transfer function curve chart of the collimating optical system of Fig. 2 this utility model examples Example 1；
Wherein, secondary mirror 1, shading mirror 2, primary mirror 3, infrared target 4.
Specific embodiment
In order to solve collimating optical system complexity in prior art, the elimination of aberration disaster and design and debug difficulty
Problem, this utility model provides a kind of collimating optical system, below in conjunction with accompanying drawing and embodiment, this utility model is carried out
Further describe.It should be appreciated that specific embodiment described herein, only in order to explain this utility model, does not limit
This utility model.
According to embodiment of the present utility model, there is provided a kind of collimating optical system, Fig. 1 is this utility model embodiment
The structural representation of collimating optical system, as shown in figure 1, according to the collimating optical system of this utility model embodiment, same to optical axis
Primary mirror 3, secondary mirror 1, cone 2 and infrared target 4,
The radius of described infrared target 4 shines secondary mirror 1 along optical axis,
Described radius is reflexed to primary mirror 2 by described secondary mirror 1；
The reflection light that described primary mirror 2 receives secondary mirror 1 is transformed into collimated ray outgoing；
Described cone 3, for eliminating the veiling glare of unexpected visual field.
Specifically, described secondary mirror 1 and primary mirror 3 are aspheric surface.
More specific, the radius of curvature of described primary mirror 3 is -271.2, asphericity coefficients K=-1；Secondary mirror 1 radius of curvature
For -63.5, asphericity coefficients K=-2.205.
Preferably, all being made using aluminum alloy materials of described secondary mirror 1 and primary mirror 3, the lightweight using back side hollow out sets
Meter.
The collimating optical system that this utility model embodiment provides, using Cassegrain's total-reflection type optical texture, only adopts
Form collimated light path with 2 non-spherical reflectors (primary mirror and secondary mirror), small volume, lightweight, no color differnece, image quality are high, can
In target simulator for lightweight airborne opto-electronic device.
For more detailed explanation embodiment of the present utility model, provide example 1, in example 1 optical system parameter
As follows：
System service band：3～5 μm and 8～12 μm；
System focal：700mm；
System F number：10.
The lens data of the collimating optical system of this utility model examples Example 1 is as shown in table 1.
Table 1
| Lens sequence number | Radius of curvature R (mm) | Interval d (mm) | Asphericity coefficients K | Bore (mm) |
| Primary mirror | -271.2 | 110 | -1 | 70 |
| Secondary mirror | -63.5 | 132 | -2.205 | 16 |
The optical transfer function curve chart of the collimating optical system of this utility model examples Example 1 is as shown in Fig. 2 scheming
Abscissa SPATIAL FREQUENCY (CYCLES/MM) representation space frequency in 2 (line right/millimeter), vertical coordinate MODULATION
Represent contrast, as shown in Figure 2, close to diffraction limit, image quality is preferable for the optical transfer function of this collimating optical system.
The collimating optical system of this utility model examples Example 1 can be operated in broadband scope (3～5 μm of medium wave and length
8～12 μm of ripple) in without aberration, be particularly suitable for providing infrared mesh at a distance for infrared airborne lidar for fluorescence focusing purposes
The target simulator in mark source.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to this utility model
New spirit and scope.So, if of the present utility model these modification and modification belong to this utility model claim and
Within the scope of its equivalent technologies, then this utility model is also intended to comprise these changes and modification.
Claims (5)
1. a kind of collimating optical system is it is characterised in that include the primary mirror of same optical axis, secondary mirror, cone and infrared target,
The radius of described infrared target shines secondary mirror along optical axis,
Described radius is reflexed to primary mirror by described secondary mirror；
The reflection light that described primary mirror receives secondary mirror is transformed into collimated ray outgoing；
Described cone, for eliminating the veiling glare of unexpected visual field.
2. collimating optical system as claimed in claim 1 is it is characterised in that described secondary mirror and primary mirror are aspheric surface.
3. collimating optical system as claimed in claim 1 is it is characterised in that the radius of curvature of described primary mirror is -271.2, non-
Asphere coefficient K=-1；Secondary curvature radius are -63.5, asphericity coefficients K=-2.205.
4. collimating optical system as claimed in claim 1 it is characterised in that described secondary mirror and primary mirror all using aluminium alloy material
Material is made.
5. collimating optical system as claimed in claim 1 is it is characterised in that the back side hollow out of described secondary mirror and primary mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620918223.0U CN206002781U (en) | 2016-08-22 | 2016-08-22 | A kind of collimating optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620918223.0U CN206002781U (en) | 2016-08-22 | 2016-08-22 | A kind of collimating optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206002781U true CN206002781U (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620918223.0U Active CN206002781U (en) | 2016-08-22 | 2016-08-22 | A kind of collimating optical system |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990502A (en) * | 2017-06-14 | 2017-07-28 | 上海航天控制技术研究所 | Cattell optical module Method of Adjustment |
| WO2023071647A1 (en) * | 2021-10-28 | 2023-05-04 | Oppo广东移动通信有限公司 | Optical lens, camera module, and electronic device |
-
2016
- 2016-08-22 CN CN201620918223.0U patent/CN206002781U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990502A (en) * | 2017-06-14 | 2017-07-28 | 上海航天控制技术研究所 | Cattell optical module Method of Adjustment |
| CN106990502B (en) * | 2017-06-14 | 2019-11-22 | 上海航天控制技术研究所 | Cattell optical module Method of Adjustment |
| WO2023071647A1 (en) * | 2021-10-28 | 2023-05-04 | Oppo广东移动通信有限公司 | Optical lens, camera module, and electronic device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |