CN110673299B - Reflector micro-adjustment device suitable for cold optics - Google Patents
Reflector micro-adjustment device suitable for cold optics Download PDFInfo
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- CN110673299B CN110673299B CN201910918069.5A CN201910918069A CN110673299B CN 110673299 B CN110673299 B CN 110673299B CN 201910918069 A CN201910918069 A CN 201910918069A CN 110673299 B CN110673299 B CN 110673299B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
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Abstract
The utility model provides a little adjusting device of reflector suitable for cold optics, includes speculum, flexible mirror seat, adjusting block and piezoelectric motor, the speculum pass through the screw thread at back with the installation base face lug connection of flexible mirror seat is as an organic whole, flexible mirror seat both sides are inside to be equipped with gentle arm end and base end, piezoelectric motor fixes the bottom of flexible mirror seat, piezoelectric motor's piezoelectricity takes place the vibration under the piezoelectricity, piezoelectric motor drive adjusting block reciprocates. The adjusting slide block drives the flexible arm to move, the inclination adjustment of the reflector is realized through the action of the flexible hinge on the flexible mirror seat, and the adjusting device has the characteristics of high adjusting precision, good repeatability and good adaptability to the severe environment conditions of closed vacuum and ultralow temperature.
Description
Technical Field
The invention relates to a micro-adjusting device for a reflector in cold optics.
Background
With the continuous development of infrared technology, the application of devices such as infrared imaging terminals and the like on ground bases and space large-caliber telescopes is more and more extensive. Meanwhile, the requirements of people on the performance of the infrared detection instrument are higher and higher, and when a detection target signal is very weak, the signal distance is relatively long and the temperature is low, the main factors of the detection performance are influenced by the heat radiation and the stray light of an optical system and a supporting structure in the detection instrument. To reduce this effect, refrigeration techniques must be employed to lower the temperature of the optical system and associated support components to effectively reduce the background photon flux, acting as a background limit detector, and thereby increasing the sensitivity of the detector. To achieve this condition, the optical system, the associated support member and the detector are placed together in an infrared dewar, the temperature inside the dewar varying according to the detection band of the infrared detector. Generally, for short wave, medium wave and long wave infrared detectors, the temperature in the dewar should be controlled to be about 100K, 77K and 60K respectively.
In order to ensure that the temperature of the whole optical system is controlled in a low-temperature environment of 60-100K, the optical elements and the supporting structure thereof need to be placed in a sealed vacuum harsh environment. In the optical-mechanical structure design of cold optics, although the alignment and final performance of the optical system can be guaranteed by design accuracy, error analysis, material analysis and the like as much as possible in order to reduce installation and adjustment and realize athermalization design, due to the complex structure of the optical-mechanical system and large-range temperature change, the consistency of the structural deformation of the optical-mechanical system before and after the temperature change is difficult to guarantee, and the optical system inevitably generates aberration due to the inclination of an optical element.
Disclosure of Invention
Therefore, a fine adjustment device is required to realize the tilt adjustment of the reflector in a severe environment of a closed vacuum and a low temperature, and simultaneously, the surface shape precision and the position precision of the reflector under a large temperature change condition and the strong environmental adaptability of the structure are also ensured.
In view of the above, it is necessary to provide a structure solution suitable for micro-adjustment of a mirror in cold optics, so as to solve the above problems.
The invention aims to realize the fine adjustment of a reflector under the severe environment condition of low-temperature vacuum in a large temperature change range (the temperature change is generally not lower than 200K), solve the fine adjustment problem of an optical system under the severe environment condition of low-temperature vacuum and adapt to the complex deformation of an optical machine structure caused by the condition of the large temperature change range of the optical system, and adopt the following technical scheme:
the utility model provides a speculum micro-adjustment device suitable for among cold optics, includes speculum, flexible mirror seat, adjusting block and piezoelectric motor, the speculum pass through the screw thread at back with the installation base face lug connection of flexible mirror seat is as an organic whole, flexible mirror seat both sides inside is equipped with gentle arm end and base end, piezoelectric motor fixes the bottom of flexible mirror seat, piezoelectric motor's piezoelectricity takes place the vibration under the piezoelectricity, piezoelectric motor drive adjusting block reciprocates.
Preferably, the flexible arm end and the base end are respectively provided with a ball bearing, one side of the adjusting sliding block is provided with an inclined plane, the other side of the adjusting sliding block is provided with a straight plane, and the ball bearings are respectively in close contact with the straight plane and the inclined plane of the adjusting sliding block.
Preferably, including extension spring round pin, extension spring and extension spring dog, the one end of extension spring is passed through the extension spring round pin is fixed the gentle arm end of flexible mirror seat, the other end of extension spring passes through the extension spring dog is fixed the base end of flexible mirror seat.
Preferably, the ball bearing is fixed by a bearing pin.
Preferably, the side surface of the piezoelectric motor is provided with a mounting hole, and the piezoelectric motor is fixed at the bottom of the flexible mirror base through the mounting hole.
The invention has the following advantages: the speculum is fixed on the installation base face of flexible mirror seat, in order to guarantee the mirror surface shape of face precision under the big temperature range change, simultaneously when the slope adjustment of speculum, the slope adjustment of speculum is realized indirectly through the installation base face of adjusting flexible mirror seat, thereby avoid stress direct action on the speculum, guarantee the shape of face precision of speculum, adjust the slider and drive flexible arm motion, the slope adjustment of speculum is realized through the effect of the flexible hinge on the flexible mirror seat, it is high to have the regulation precision, good repeatability, airtight vacuum, the good characteristics of the adaptability of the adverse circumstances condition of ultra-low temperature.
Drawings
FIG. 1 is a schematic structural diagram of a mirror fine adjustment apparatus for cold optics according to the present invention;
FIG. 2 is a front view of a mirror fine adjustment apparatus for cold optics according to the present invention;
FIG. 3 is a schematic diagram of a mirror fine adjustment apparatus for cold optics according to the present invention.
Wherein: 1-a mirror; 2-a flexible lens base; 3-a tension spring pin; 4-a tension spring; 5-a tension spring stop block; 6-a bearing pin; 7-a ball bearing; 8-adjusting the slide block; 9-piezoelectric motor.
Detailed Description
The invention is described in more detail below with reference to the figures and examples.
Referring to fig. 1 and 2, the micro-adjustment device for the reflector in the cold optics comprises a reflector 1, a flexible mirror base 2, an adjustment slider 8 and a piezoelectric motor 9, wherein the reflector 1 is directly connected with an installation base surface of the flexible mirror base 2 into a whole through a back thread, a flexible arm end and a base end are arranged inside two sides of the flexible mirror base 2, the piezoelectric motor 9 is fixed at the bottom of the flexible mirror base 2, a piezoelectric body of the piezoelectric motor 9 vibrates under the piezoelectric action, and the piezoelectric motor drives the adjustment slider 8 to move up and down by utilizing the piezoelectric effect of the piezoelectric body. The flexible arm end and the base end are respectively provided with a ball bearing 7, one side of the adjusting sliding block 8 is provided with an inclined plane, the other side of the adjusting sliding block 8 is provided with a straight plane, the ball bearings 7 are respectively in close contact with the straight plane and the inclined plane of the adjusting sliding block 8, the ball bearings 7 play a role in guiding, the flexibility of the piezoelectric motor 9 in the up-and-down moving process of the adjusting sliding block 8 is guaranteed, in the up-and-down moving process, one side with weak rigidity of the flexible lens base 2 can be driven to move, therefore, the inclination adjustment of the reflector is indirectly realized, and the adjusted part is shown as a dotted line in figure 3.
As shown in connection with fig. 3: the one end of extension spring 4 is passed through extension spring round pin 3 and is fixed at the gentle arm end of flexible mirror base 2, and the other end of extension spring 4 passes through extension spring dog 5 to be fixed at the base end of flexible mirror base 2, lets the gentle arm end of flexible mirror base 2 press from both sides tight adjusting block 8 with the base end to guarantee adjusting block 8 and reciprocate the stability that the gentle arm end of process removed, the above-mentioned principle of adjusting 1 orientation of speculum for flexible mirror base 2, the regulation principle of another orientation is the same.
Further, the ball bearing 7 is fixed by a bearing pin.
Still further, the side of the piezoelectric motor 9 is provided with a mounting hole, and the piezoelectric motor 9 is fixed at the bottom of the flexible mirror base 2 through the mounting hole.
Speculum 1 and flexible mirror seat 2 adopt the same kind of metal material, speculum 1 is fixed on the installation base face of flexible mirror seat 2, in order to guarantee the mirror surface shape of face precision under the big temperature range change, simultaneously when carrying out the slope adjustment of speculum 1, the slope adjustment of speculum 1 is realized indirectly through the installation base face of adjusting flexible mirror seat 2, thereby avoid stress direct action on speculum 1, guarantee speculum 1's shape of face precision, adjust the slider 8 and can drive the flexible arm motion, the slope adjustment of speculum is realized through the flexible hinge on the flexible mirror seat 2, it is high to have the regulation precision, good repeatability, it is airtight vacuum, the good characteristics of the adaptability of the adverse circumstances condition of ultra-low temperature.
By reasonably designing the flexible structure of the mirror base, the device can adapt to the thermal deformation of the reflector and the supporting structure thereof under the large temperature range (more than 200K) change in a vacuum environment, and realize the fine adjustment of the inclination of the reflector while ensuring the shape precision, the structure reliability and the position accuracy of the reflector so as to adapt to the complex deformation of the optical structure caused by the large temperature change range condition of the optical system.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (4)
1. A micro-adjusting device of a reflector suitable for cold optics comprises the reflector (1), a flexible mirror base (2), an adjusting slider (8) and a piezoelectric motor (9), and is characterized in that the reflector (1) is directly connected with a mounting base surface of the flexible mirror base (2) into a whole through threads on the back, a flexible arm end and a base end are arranged inside two sides of the flexible mirror base (2), the flexible arm end and the base end of the flexible mirror base clamp the adjusting slider, the piezoelectric motor (9) is fixed at the bottom of the flexible mirror base (2), a piezoelectric body of the piezoelectric motor (9) vibrates under the piezoelectric action, and the piezoelectric motor (9) drives the adjusting slider (8) to move up and down;
the flexible arm end and the base end are respectively provided with a ball bearing (7), one side of the adjusting sliding block (8) is provided with an inclined plane, the other side of the adjusting sliding block is provided with a straight plane, the ball bearings (7) are respectively in close contact with the straight plane and the inclined plane of the adjusting sliding block (8), the flexible arm end corresponds to the inclined plane, and the base end corresponds to the straight plane.
2. The micro-adjustment device for the reflector suitable for cold optics of claim 1, comprising a tension spring pin (3), a tension spring (4) and a tension spring stop (5), wherein one end of the tension spring (4) is fixed at the flexible arm end of the flexible mirror base (2) through the tension spring pin (3), and the other end of the tension spring (4) is fixed at the base end of the flexible mirror base (2) through the tension spring stop (5).
3. A mirror fine adjustment device suitable for use in cold optics, according to claim 1, characterized in that the ball bearing (7) is mounted and fixed by means of a bearing pin.
4. A mirror fine adjustment device suitable for use in cold optics as claimed in claim 1, said piezoelectric motor (9) having a mounting hole on its side, said piezoelectric motor (9) being fixed to the bottom of said flexible mirror mount (2) through said mounting hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019208047837 | 2019-05-30 | ||
| CN201920804783 | 2019-05-30 |
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| Publication Number | Publication Date |
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| CN110673299A CN110673299A (en) | 2020-01-10 |
| CN110673299B true CN110673299B (en) | 2021-11-16 |
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| CN201910918069.5A Active CN110673299B (en) | 2019-05-30 | 2019-09-26 | Reflector micro-adjustment device suitable for cold optics |
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| CN113189737B (en) * | 2021-04-27 | 2022-12-30 | 重庆大学 | Slide rail assembled composite control type quick reflector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7066982B2 (en) * | 2017-05-30 | 2022-05-16 | 船井電機株式会社 | Optical scanning device |
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- 2019-09-26 CN CN201910918069.5A patent/CN110673299B/en active Active
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| CN101806992A (en) * | 2009-02-16 | 2010-08-18 | 精工爱普生株式会社 | Optical devices and projector |
| WO2018129037A2 (en) * | 2017-01-04 | 2018-07-12 | Ball Aerospace & Technologies Corp. | Cross flexure suspension |
| CN108646379A (en) * | 2018-04-10 | 2018-10-12 | 中国计量科学研究院 | Plane mirror system |
| CN109491042A (en) * | 2018-12-14 | 2019-03-19 | 中国科学院光电技术研究所 | A kind of electricity tune mirror based on rotating electric machine and flexible hinge |
| CN109709657A (en) * | 2019-01-07 | 2019-05-03 | 大族激光科技产业集团股份有限公司 | A kind of rotation adjustment spectacle-frame device of unlubricated medium |
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