CN100443940C - Automatic light-adjusting device - Google Patents
Automatic light-adjusting device Download PDFInfo
- Publication number
- CN100443940C CN100443940C CNB2006101044572A CN200610104457A CN100443940C CN 100443940 C CN100443940 C CN 100443940C CN B2006101044572 A CNB2006101044572 A CN B2006101044572A CN 200610104457 A CN200610104457 A CN 200610104457A CN 100443940 C CN100443940 C CN 100443940C
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- China
- Prior art keywords
- bevel gear
- plate
- automatic light
- light modulation
- bearing
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- 230000005622 photoelectricity Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention relates to an automatic dimming device, which adopts the technical scheme that: the device comprises two density change discs, a driving bevel gear and a servo micromotor capable of driving the driving bevel gear, wherein the two density change discs are meshed with the driving bevel gear through the bevel gear and are symmetrically arranged on two sides of the driving bevel gear. The invention has the advantages of high light adjusting precision, good light adjusting effect and compact structure.
Description
Technical field
The present invention relates to a kind of automatic light modulation device.
Background technology
When optical viewer is searched for and is aimed at moving target, wish that system can satisfy the variation of extraneous brightness and illumination, optical viewer should have corresponding dimming capability for this reason, adapting to the observation needs, however the domestic still untapped light modulating device of specialized application on this type systematic that have at present.
Summary of the invention
The above-mentioned technical matters of the present invention for existing in the solution background technology, and provide a kind of light modulation precision height, the automatic light modulation device of good dimming effect and compact conformation.
Technical solution of the present invention is: the present invention is a kind of automatic light modulation device, its special character is: this device comprises plate of changing density, drive bevel gear and can drive the servo micromotor of drive bevel gear, plate of changing density is by bevel gear and drive bevel gear engagement, plate of changing density is two, is symmetricly set on the drive bevel gear both sides.
Above-mentioned plate of changing density is provided with electric stop means, and electric stop means comprises photoelectricity travel switch and limit cam, and described photoelectricity travel switch and limit cam are separately positioned on plate of changing density rotational travel destination county.
Above-mentioned drive bevel gear is provided with catch.
Angle between above-mentioned two plate of changing density is 9-15 °.
Angle between above-mentioned two plate of changing density is 12 °.
Above-mentioned plate of changing density is arranged on the axle of bevel gear, and the axle of bevel gear is connected with bearing seat.
Above-mentioned bearing seat comprises bearing bracket stand, bearing and bearing cap, and bearing is arranged in the bearing bracket stand, and bearing bracket stand is outside equipped with bearing cap, and the axle of bevel gear is arranged on the bearing.
Be provided with gear wheel between above-mentioned servo micromotor and drive bevel gear, servo micromotor drives drive bevel gear by gear wheel.
Be connected to speed reduction unit on the above-mentioned servo micromotor.
The present invention utilizes two plate of changing density that are mutually angle to constitute the variable density sheet, on this structure, two plate of changing density require from the full impregnated district, relative to rotating around optical axis constant speed isogonism, also equivalent increase and decrease of corresponding transmitance simultaneously, they are superposed to the attenuator of a uniform thickness in light path, in order to guarantee that physical construction is light and handy, practical, nimbly and freely, the present invention has adopted compact bevel gear pair transmission to realize this requirement, two plate of changing density directly are fixed on respectively on the identical bevel gear shaft of structural parameters, its two while and a drive bevel gear engagement, tested only by placing behind the plate of changing density small reflector of main optical path to draw, directly project photometry element---silicon photocell, illuminance of image plane size that the voltage value that silicon photocell records has been a secondary indication, regulating this voltage of control promptly is task of the present invention for the constant of setting (this constant is required according to high-speed camera), therefore the present invention has realized that not only the tool structure is light and handy, practical, nimbly and freely, and can guarantee light modulation precision and dimming effect.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that the A of Fig. 1 is to view.
Embodiment
Referring to Fig. 1,2, the present invention includes symmetrical plate of changing density 1,10, drive bevel gear 6 and can drive the servo micromotor 4 of drive bevel gear 6, plate of changing density logical 1,10 is respectively by bevel gear 17,19 and drive bevel gear 6 engagements, plate of changing density 1 and 10 s' angle α is 9-15 °, is good with 12 °; Two plate of changing density 1,10 are separately positioned on the axle of bevel gear 17,19, the axle of bevel gear 17,19 is connected with plate of changing density 1,10 by diaxon bearing 12,16, this diaxon bearing 12,16 comprises bearing bracket stand 14,22, bearing 15,20 and bearing cap 13,24 respectively, bearing 15,20 is separately positioned in the bearing bracket stand 14,22, bearing bracket stand 14, the 22 outer bearing caps 13,24 that are respectively arranged with, the axle of bevel gear 17,19 is separately positioned on bearing 15 and 20; Two plate of changing density 1, also be respectively arranged with electric stop means 3 on 10,7, by electric stop means 3,7 respectively plate of changing density 1 and 10 to be carried out electricity spacing, electricity stop means 3,7 include photoelectricity travel switch 2,8 and limit cam 11,12, photoelectricity travel switch 2,8 and limit cam 11,21 are separately positioned on plate of changing density 1,10 rotational travel destination counties, limit cam 11,21 at plate of changing density 1, when locating, 10 stroke ends that turn to setting can touch photoelectricity travel switch 2 respectively, 8, make plate of changing density 1,10 stop operating, drive bevel gear 6 is provided with mechanical stop limiter 9, this mechanical stop limiter 9 is a catch 18, they can be to two plate of changing density 1,10 carry out mechanical position limitation, 6 of servo micromotor 4 and drive bevel gear are provided with gear wheel 5, servo micromotor 4 drives drive bevel gear 6 by gear wheel 5, also is connected to speed reduction unit 23 on the servo micromotor 4.
Claims (9)
1, a kind of automatic light modulation device, it is characterized in that: this device comprises plate of changing density, drive bevel gear and can drive the servo micromotor of drive bevel gear, described plate of changing density is by bevel gear and drive bevel gear engagement, and described plate of changing density is two, is symmetricly set on the drive bevel gear both sides.
2, automatic light modulation device according to claim 1, it is characterized in that: described plate of changing density is provided with electric stop means, described electric stop means comprises photoelectricity travel switch and limit cam, and described photoelectricity travel switch and limit cam are separately positioned on plate of changing density rotational travel destination county.
3, automatic light modulation device according to claim 2 is characterized in that: described drive bevel gear is provided with catch.
4, according to claim 1 or 2 or 3 described automatic light modulation devices, it is characterized in that: the angle between described two plate of changing density is 9 °-15 °.
5, automatic light modulation device according to claim 4 is characterized in that: the angle between described two plate of changing density is 12 °.
6, automatic light modulation device according to claim 4 is characterized in that: described plate of changing density is arranged on the axle of bevel gear, and the axle of described bevel gear is connected with bearing seat.
7, automatic light modulation device according to claim 6 is characterized in that: described bearing seat comprises bearing bracket stand, bearing and bearing cap, and described bearing is arranged in the bearing bracket stand, and described bearing bracket stand is outside equipped with bearing cap, and the axle of described bevel gear is arranged on the bearing.
8, automatic light modulation device according to claim 6 is characterized in that: be provided with gear wheel between described servo micromotor and drive bevel gear, described servo micromotor drives drive bevel gear by gear wheel.
9, automatic light modulation device according to claim 8 is characterized in that: be connected to speed reduction unit on the described servo micromotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101044572A CN100443940C (en) | 2006-08-02 | 2006-08-02 | Automatic light-adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101044572A CN100443940C (en) | 2006-08-02 | 2006-08-02 | Automatic light-adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101118306A CN101118306A (en) | 2008-02-06 |
| CN100443940C true CN100443940C (en) | 2008-12-17 |
Family
ID=39054496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101044572A Expired - Fee Related CN100443940C (en) | 2006-08-02 | 2006-08-02 | Automatic light-adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100443940C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207184B (en) * | 2010-03-30 | 2013-05-01 | 中国科学院西安光学精密机械研究所 | Gear type fine adjustment mechanism |
| CN106443814A (en) * | 2016-08-17 | 2017-02-22 | 中国人民解放军63870部队 | Infrared observation irradiance automatic quantification dimming device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0678701B1 (en) * | 1994-03-25 | 1999-11-10 | Panavision Inc. | System for varying light intensity such as for use in motion picture photography |
| JP2003111376A (en) * | 2001-09-28 | 2003-04-11 | Canon Inc | Drive gear and optical apparatus having light quantity adjusting means |
| CN200956065Y (en) * | 2006-08-02 | 2007-10-03 | 中国科学院西安光学精密机械研究所 | Automatic light-adjusting device |
-
2006
- 2006-08-02 CN CNB2006101044572A patent/CN100443940C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0678701B1 (en) * | 1994-03-25 | 1999-11-10 | Panavision Inc. | System for varying light intensity such as for use in motion picture photography |
| JP2003111376A (en) * | 2001-09-28 | 2003-04-11 | Canon Inc | Drive gear and optical apparatus having light quantity adjusting means |
| CN200956065Y (en) * | 2006-08-02 | 2007-10-03 | 中国科学院西安光学精密机械研究所 | Automatic light-adjusting device |
Non-Patent Citations (1)
| Title |
|---|
| 高精度光电跟踪设备主摄影自动调光机构的研究. 张明慧，张尧禹，乔彦峰.光电子技术与信息，第16卷第5期. 2003 * |
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| Publication number | Publication date |
|---|---|
| CN101118306A (en) | 2008-02-06 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20110802 |