CN106292129B - A kind of shading closure assembly - Google Patents
A kind of shading closure assembly Download PDFInfo
- Publication number
- CN106292129B CN106292129B CN201610795882.4A CN201610795882A CN106292129B CN 106292129 B CN106292129 B CN 106292129B CN 201610795882 A CN201610795882 A CN 201610795882A CN 106292129 B CN106292129 B CN 106292129B
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- mirror
- hood
- secondary mirror
- light
- turning back
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
- G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of shading closure assemblies.The shading closure assembly includes: primary mirror cartridge module, secondary barrel assembly, turn back barrel assembly and rear group light-shade tube component.The primary mirror cartridge module includes body tube and the reflection primary mirror that is accommodated in the lens barrel；The secondary mirror assembly includes secondary mirror bracket, reflects secondary mirror, secondary mirror hood, the secondary mirror hood is located at outside the reflection secondary mirror, and is connect with the secondary mirror bracket, and the secondary mirror bracket is connect with the body tube；The barrel assembly of turning back includes that plane reflection is turned back mirror, it is located at the mirror hood of turning back that plane reflection is turned back outside mirror, the mirror hood lower part of turning back is equipped with mirror hood light hole of turning back, and the mirror hood light hole of turning back organizes light-shade tube component towards described afterwards；Group light-shade tube component organizes light-shade tube and lens after including after described.
Description
Technical field
The present invention relates to field of optical systems, and in particular to a kind of shading closure assembly.
Background technique
Current airborne, spaceborne optics load, especially space telescope optics loading demands have very high stray light
Rejection ability, to guarantee influence of the load to stray light is not present during target acquisition target observations, thus largely
Guarantee the signal-to-noise ratio of target.Therefore effective inhibition of optical system stray light has comparable practicability and importance.
Current airborne, spaceborne optics load mostly uses coaxial optical system, cooperates the longer hood in camera lens front end, to protect
The higher stray light rejection ability of card system, its shortcoming is that when spuious Xanthophyll cycle is more demanding the scale of construction of hood often compared with
Greatly, airborne or onboard system small light demand is not met.And it is a small number of at present miscellaneous using internal hood progress optical system
The optics load that astigmatism inhibits, also more hood or baffle vane using rotational symmetry formula, realizes and increases systematic absences face
Product reduces the spuious backscatter extinction logarithmic ratio of system.The delustring mode can play a role for coaxial-symmetrical optical system, for current
Optical system height folds, and the optical system for forming unsymmetric structure form often has the leakage of certain visual field external stray lights
Light substantially reduces system signal noise ratio, to reduce optics load detectivity.
Summary of the invention
The present invention is directed to overcome defect of the existing technology, the invention adopts the following technical scheme: the present invention provides
A kind of shading closure assembly.The shading closure assembly includes: primary mirror cartridge module, and the secondary lens barrel group on the primary mirror cartridge module is arranged in
Part, turn back barrel assembly and rear group light-shade tube component；The primary mirror cartridge module includes body tube and is accommodated in the lens barrel
Reflection primary mirror；The secondary mirror assembly includes secondary mirror bracket, reflects secondary mirror and secondary mirror hood, the secondary mirror hood are located at
It outside the reflection secondary mirror, and is connect with the secondary mirror bracket, the secondary mirror bracket is connect with the body tube；The mirror of turning back
Cartridge module includes that plane reflection is turned back mirror, is located at the mirror hood of turning back that plane reflection is turned back outside mirror, the mirror shading of turning back
Cover lower part is equipped with mirror hood light hole of turning back, and the mirror hood light hole of turning back organizes light-shade tube component towards described afterwards；
The lens that light-shade tube component includes rear group of light-shade tube and is accommodated in inside the rear group light-shade tube are organized after described.
In some embodiments, the body tube be substantially in one along lens axis hollow cylinder, and set inside body tube
It is equipped with baffle vane, symmetrically arranged body tube through-hole is provided at left and right sides of the body tube, the mirror hood of turning back
The left and right sides is provided with the mirror hood through-hole of turning back with body tube through-hole cooperation, and is arranged by shaft in the primary mirror
The body tube is connected and mirror hood of turning back among cylinder through-hole and mirror hood through-hole of turning back.
In some embodiments, the secondary mirror hood includes into the secondary mirror cone of shaped hollow round table, the secondary mirror shading
Canister portion point extend outwardly to be formed in the brim of a hat shape hat brim type hood outstanding.
In some embodiments, connected between the secondary mirror hood and the secondary mirror bracket by connecting column.
In some embodiments, the connecting column is the distribution of the angular separation such as multiple and along the secondary mirror bracket inside.
In some embodiments, the primary mirror cartridge module, secondary barrel assembly are respectively equipped with baffle vane in barrel assembly of turning back.
In some embodiments, it is respectively equipped in the secondary mirror hood, turn back mirror hood and the rear group light-shade tube
Delustring ring.
In some embodiments, the delustring ring surface carries out roughness processing.
In some embodiments, the delustred coating of 95% or more the delustring magnitude of delustring ring surface spraying.
In some embodiments, the baffle vane is equidistantly evenly distributed on the body tube inner wall.
Technical effect of the invention: shading closure assembly provided by the invention is unsymmetric structure, for asymmetrical optical system
System has preferably stray light rejection ability, and the entire length of shading closure assembly is shorter, is conducive to the small light of system.
Detailed description of the invention
Fig. 1 is the structural blast schematic diagram according to the shading closure assembly of one embodiment of the invention；
Fig. 2 is the cross-sectional view according to the shading closure assembly of one embodiment of the invention；
Fig. 3 is the structural schematic diagram of primary mirror cartridge module according to an embodiment of the invention；
Fig. 4 is the structural schematic diagram of secondary barrel assembly according to an embodiment of the invention；
Fig. 5 is the structural schematic diagram of reflexibie barrel assembly according to an embodiment of the invention；
Fig. 6 is the structural schematic diagram of rear group light-shade tube component according to an embodiment of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, but not to limit the present invention.
Referring to figs. 1 to shown in Fig. 6, being a kind of shading closure assembly 100 provided by the invention.The shading closure assembly 100 wraps
It includes: primary mirror cartridge module 10, the secondary barrel assembly 20 being arranged on the primary mirror cartridge module 10, turn back barrel assembly 30 and rear group screening
Light microscopic cartridge module 40.
The primary mirror cartridge module 10 includes body tube 102 and the reflection primary mirror 101 being accommodated in the lens barrel 102.
The secondary mirror assembly 20 includes: secondary mirror bracket 203, reflects secondary mirror 201, secondary mirror hood 202, the secondary mirror shading
Cover 202 is located at outside the reflection secondary mirror 201, and is connect with the secondary mirror bracket 203, the secondary mirror bracket 203 respectively with
Body tube 102 is connected with secondary mirror 201, guarantees the optical position of secondary mirror.
The barrel assembly 30 of turning back includes that plane reflection is turned back mirror 301, is located at the folding that plane reflection is turned back outside mirror 301
Tilting mirror hood 302,302 lower part of mirror hood of turning back are equipped with mirror hood light hole 305 of turning back, the mirror shading of turning back
Cover light hole 305 towards organizing light-shade tube component 40 after described, turned back mirror 301 by plane reflection by light, is led to by body tube
Unthreaded hole 106 organizes light-shade tube component 40 after reaching.The mirror hood light hole 305 of turning back can guarantee the transmission of imaging optical path.
Group light-shade tube component 40 is organized light-shade tube 402 and is accommodated in inside the light-shade tube after described after including
Lens 401.Lens 401 carry out transmission to light and guarantee imaging image quality, and there are light-shade tubes 402 for outside, and light-shade tube 402 can
It is effective to increase systematic absences area, further decrease systematic absences ability.It is organized at the top of shading shade assembly 40 afterwards and is provided with screw thread
403 are connected with primary mirror cartridge module body tube light hole 106.
In some embodiments, the body tube 102 substantially in one along lens axis hollow cylinder, and body tube
102 are internally provided with baffle vane 103.The left and right sides of the body tube 102 is provided with symmetrically arranged body tube through-hole 104,
The left and right sides for turning back mirror hood 302 is provided with the mirror hood through-hole of turning back with the body tube through-hole 104 cooperation
303, and the body tube is connected among the body tube through-hole 104 and mirror hood through-hole 303 of turning back by shaft setting
It 102 and turns back mirror hood 103.
In some embodiments, the secondary mirror hood 202 includes into the secondary mirror cone 2021 of shaped hollow round table, described
2021 part of secondary mirror cone extend outwardly to be formed in the brim of a hat shape hat brim type hood 2022 outstanding.The hat brim type hood
2022, which can stop visual field external stray light to shine directly into plane reflection, turns back mirror 301, by reflecting arrival group hood group
Inside part 40, and then reach system image planes.
In some embodiments, connected between the secondary mirror hood 2022 and the secondary mirror bracket 203 by connecting column 204
It connects.
In some embodiments, the connecting column is the distribution of the angular separation such as multiple and along the secondary mirror bracket inside.Institute
Stating connecting column 204 can guarantee the optical position of reflection secondary mirror 201.
In some embodiments, the primary mirror cartridge module 10, secondary barrel assembly 20, be respectively equipped in barrel assembly 30 of turning back
Baffle vane.Purpose is to increase systematic absences ability, and the baffle vane 103 inside body tube 102 can guarantee visual field external stray light
System rear portion is got to by 2 scatterings, to significantly reduce the spuious backscatter extinction logarithmic ratio of system.
In some embodiments, the secondary mirror hood 202, turn back mirror hood 302 and the rear group light-shade tube 402
In be respectively equipped with delustring ring.
In some embodiments, the delustring ring surface carries out roughness processing.
In some embodiments, the delustred coating of 95% or more the delustring magnitude of delustring ring surface spraying.
In some embodiments, the baffle vane 103 is equidistantly evenly distributed on 102 inner wall of body tube.
Shading closure assembly employed in the present invention plays light-blocking path relation are as follows: light is irradiated by external visual field into main shading
Cartridge module 10, due to the requirement of system compact, the limited length of main shading cartridge module 10 is unable to satisfy and inhibits all light outside angle
Line can not be irradiated to barrel assembly 30 of turning back, therefore using non-right in time mirror assembly 20 under the premise of not increasing system length
Claim the brim of a hat shape secondary mirror hood 202, the stray light of the angle is inhibited.
Technical effect of the invention: shading closure assembly provided by the invention is unsymmetric structure, for asymmetrical optical system
System has preferably stray light rejection ability, and the entire length of shading closure assembly is shorter, is conducive to the small light of system.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications made by technical concept of the invention should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (10)
1. a kind of shading closure assembly characterized by comprising the secondary mirror on the primary mirror cartridge module is arranged in primary mirror cartridge module
Cartridge module, turn back barrel assembly and rear group light-shade tube component；
The primary mirror cartridge module includes body tube and the reflection primary mirror that is accommodated in the body tube；
The secondary barrel assembly includes secondary mirror bracket, reflects secondary mirror and secondary mirror hood, and the secondary mirror hood is located at described
It reflects outside secondary mirror, and is connect with the secondary mirror bracket, the secondary mirror bracket is connect with the body tube；
The barrel assembly of turning back includes that plane reflection is turned back mirror, is located at the mirror hood of turning back that plane reflection is turned back outside mirror,
The mirror hood lower part of turning back, which is equipped with, turns back mirror hood light hole, and the mirror hood light hole of turning back is towards group after described
Light-shade tube component；
The lens that light-shade tube component includes rear group of light-shade tube and is accommodated in inside the rear group light-shade tube are organized after described.
2. shading closure assembly according to claim 1, which is characterized in that the body tube is substantially in one along lens axis
Hollow cylinder, and body tube is internally provided with baffle vane, and symmetrically arranged primary mirror is provided at left and right sides of the body tube
Cylinder through-hole is provided at left and right sides of the mirror hood of turning back logical with the mirror hood of turning back of body tube through-hole cooperation
Hole, and the body tube is connected and mirror of turning back among the body tube through-hole and mirror hood through-hole of turning back by shaft setting
Hood.
3. shading closure assembly according to claim 1, which is characterized in that the secondary mirror hood includes into shaped hollow round table
Secondary mirror cone, secondary mirror cone part extends outwardly to be formed in the brim of a hat shape hat brim type hood outstanding.
4. shading closure assembly according to claim 1, which is characterized in that the secondary mirror hood and the secondary mirror bracket it
Between pass through connecting column connect.
5. shading closure assembly according to claim 4, which is characterized in that the connecting column is multiple and along the secondary mirror branch
The distribution of the angular separation such as the inside of frame.
6. shading closure assembly according to claim 1, which is characterized in that the primary mirror cartridge module, is turned back at secondary barrel assembly
Baffle vane is respectively equipped in barrel assembly.
7. shading closure assembly according to claim 1, which is characterized in that the secondary mirror hood, turn back mirror hood and
Delustring ring is respectively equipped in group light-shade tube after described.
8. shading closure assembly according to claim 7, which is characterized in that the delustring ring surface carries out roughness processing.
9. shading closure assembly according to claim 7, which is characterized in that the delustring ring surface sprays delustring magnitude 95%
Above delustred coating.
10. shading closure assembly according to claim 2, which is characterized in that the baffle vane is equidistantly evenly distributed on institute
State body tube inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795882.4A CN106292129B (en) | 2016-08-31 | 2016-08-31 | A kind of shading closure assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795882.4A CN106292129B (en) | 2016-08-31 | 2016-08-31 | A kind of shading closure assembly |
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| Publication Number | Publication Date |
|---|---|
| CN106292129A CN106292129A (en) | 2017-01-04 |
| CN106292129B true CN106292129B (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795882.4A Active CN106292129B (en) | 2016-08-31 | 2016-08-31 | A kind of shading closure assembly |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824661A (en) * | 2019-12-13 | 2020-02-21 | 中国科学院长春光学精密机械与物理研究所 | Secondary mirror supporting structure |
| CN112666704B (en) * | 2020-12-29 | 2022-05-13 | 中国科学院长春光学精密机械与物理研究所 | Structural design method of first-elimination stray light hood in optical system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162891A (en) * | 2011-04-20 | 2011-08-24 | 北京空间机电研究所 | Secondary mirror support structure of space optical remote sensor |
| CN104635317A (en) * | 2015-02-11 | 2015-05-20 | 中国科学院长春光学精密机械与物理研究所 | Light coaxial three-reflector spatial optical remote sensor structure |
| CN104656251A (en) * | 2015-02-04 | 2015-05-27 | 中国科学院西安光学精密机械研究所 | Sub-arc-second large-aperture compact optical structure for detecting dim point targets |
-
2016
- 2016-08-31 CN CN201610795882.4A patent/CN106292129B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162891A (en) * | 2011-04-20 | 2011-08-24 | 北京空间机电研究所 | Secondary mirror support structure of space optical remote sensor |
| CN104656251A (en) * | 2015-02-04 | 2015-05-27 | 中国科学院西安光学精密机械研究所 | Sub-arc-second large-aperture compact optical structure for detecting dim point targets |
| CN104635317A (en) * | 2015-02-11 | 2015-05-20 | 中国科学院长春光学精密机械与物理研究所 | Light coaxial three-reflector spatial optical remote sensor structure |
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| CN106292129A (en) | 2017-01-04 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jizhen Inventor after: Qu Hemeng Inventor after: Wang Lingjie Inventor after: Wu Yanxiong Inventor after: Wu Hongbo Inventor after: Wang Chao Inventor before: Zhang Xin Inventor before: Qu Hemeng |
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