CN107087094A - Double cam focus adjusting mechanism based on absolute grating scale - Google Patents
Double cam focus adjusting mechanism based on absolute grating scale Download PDFInfo
- Publication number
- CN107087094A CN107087094A CN201710511483.5A CN201710511483A CN107087094A CN 107087094 A CN107087094 A CN 107087094A CN 201710511483 A CN201710511483 A CN 201710511483A CN 107087094 A CN107087094 A CN 107087094A
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- Prior art keywords
- focusing
- slide
- component
- cam
- grating scale
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lens Barrels (AREA)
Abstract
Double cam focus adjusting mechanism based on absolute grating scale, is related to space flight focusing field, solves existing focus adjusting mechanism and there is anti-vibration to go out that attacking ability is poor, and kinetic stability is poor；The problem of position of focal plane detecting element can not eliminate error of backlash simultaneously, the present invention includes focal plane component, focusing slide, focusing pedestal, focusing component and absolute grating scale, focal plane component is installed on focusing slide, slide of focusing is arranged on focusing pedestal by line slideway, absolute grating scale is installed between focusing pedestal and focusing slide, focusing component is installed on the top of instruction pedestal.The present invention is using displacement measurement mechanism of the absolute grating scale as driven end, the hysterisis error of mechanism is eliminated from principle, focusing accuracy is improved, the controllability of focusing is enhanced, the long focal plane of large scale is particularly suitable for use in, requires the focus adjusting mechanism of strict space optical remote sensor.
Description
Technical field
The present invention relates to space flight focusing field, and in particular to a kind of double cam focus adjusting mechanism based on absolute grating scale.
Background technology
At present, the widely used cam focusing mechanism of the focus adjusting mechanism of space optical remote sensor, Cam focusing mechanism has structure letter
The features such as clamping stagnation being difficult in single, precision height, motion process.And the traditional support mode of its focal plane component is generally hanged using single-point
Arm is supported, and mechanism has anti-vibrating and impact ability, the problems such as kinetic stability is poor.With the development of space camera, focal plane
The weight of component is improved constantly, and traditional supporting way can not meet requirement.
Furthermore, current space optical remote sensor is most using encoder as the position detecting element of focal plane component,
Can not influence of the eliminating machine space CCD camera to mechanism, this have impact on focusing accuracy to a certain extent.
The content of the invention
There is anti-vibration to solve existing focus adjusting mechanism and go out that attacking ability is poor in the present invention, kinetic stability is poor；It is simultaneously burnt
There is provided a kind of double cam focusing machine based on absolute grating scale for the problem of face position detecting element can not eliminate error of backlash
Structure.
Double cam focus adjusting mechanism based on absolute grating scale, including it is focal plane component, focusing slide, focusing pedestal, straight
Line guide rail, focusing component and absolute grating scale；Focal plane component is installed on focusing slide, and focusing slide passes through line slideway
It is connected with focusing pedestal, absolute grating scale is installed between focusing pedestal and focusing slide, focusing component is installed on focusing base
The top of seat, is connected by two cam mechanisms with focusing slide.
Above-mentioned focal plane component includes CMOS and circuit board, focal plane electronic box casing；CMOS and circuit board are fixed on focal plane electricity
In box body.
Above-mentioned focusing component includes the first shaft end support, final drive shaft, two cams, two cam slides, focusing components
Bearing, worm gear, worm shaft, worm bearing, the second shaft end support, shaft coupling, motor；Worm shaft is arranged on by worm bearing and adjusted
On burnt assembly holder, motor is connected by shaft coupling with worm shaft, and on worm bearing, the final drive shaft is by adjusting
Burnt assembly holder is arranged on focusing pedestal；The worm gear is arranged on the centre position of final drive shaft；Described two cams pass through
Final drive shaft is installed on the both sides of focusing component bearing, and two cams are connected by cam slide with focusing slide；Described first
Shaft end support, the second shaft end support are respectively arranged in the two ends of final drive shaft.
Beneficial effects of the present invention：Using double cam mechanism as the executing agency of focusing realize focal plane component etc.
Allotment is supportted, and is improved the uniform force of whole focus adjusting mechanism, is improved the stability of focus adjusting mechanism；Use absolute optical simultaneously
Grid chi eliminates the measurement error that mechanism space CCD camera is brought as the detecting element of position of focal plane, direct measurement position of focal plane,
Enhance the real-time and controllability of focusing.
Brief description of the drawings
The sectional view of double cam focus adjusting mechanism of Fig. 1 present invention based on absolute grating scale；
The front view of double cam focus adjusting mechanism of Fig. 2 present invention based on absolute grating scale；
The side view of double cam focus adjusting mechanism of Fig. 3 present invention based on absolute grating scale.
In figure：1st, focal plane component, 2, focusing slide, 3, focusing pedestal, 4, line slideway, 5, focusing component, 6, first
Shaft end support, 7, final drive shaft, 8, cam, 9, cam slide, 10, focusing component bearing, 11, worm gear, 12, worm shaft, 13, snail
Rod bearing, the 14, second shaft end support, 15, CMOS and circuit board, 16, focal plane electronic box casing, 17, absolute grating scale, 18, connection
Axle device, 19, motor.
Embodiment
Embodiment one, with reference to Fig. 1 to Fig. 3 illustrate present embodiment, the double cam based on absolute grating scale is adjusted
Focusing mechanism, including focal plane component 1, focusing slide 2, focusing pedestal 3, line slideway 4, focusing component 5 and absolute grating scale
17；Focal plane component 1 is installed on focusing slide 2, and focusing slide 2 is connected by three line slideways 4 with focusing pedestal 3,
Focus and absolute grating scale 17 is installed between pedestal 3 and focusing slide 2, focusing component 5 is installed on the top of focusing pedestal 3, leads to
Two cam mechanisms are crossed with focusing slide 2 to be connected；Focal plane component 1 includes CMOS and circuit board 15, focal plane electronic box casing 16；
CMOS and circuit board 15 are fixed in focal plane electronic box casing 16.Focusing component 5 includes the first shaft end support 6, final drive shaft 7, two
Individual cam 8, two cam slides 9, focusing component bearing 10, worm gear 11, worm shaft 12, worm bearing 13, the second shaft end supports
14th, shaft coupling 18, motor 19；Worm shaft 12 is arranged on focusing component bearing 10 by worm bearing 13, and motor 19 passes through connection
Axle device 18 is connected with worm shaft 12, and on worm bearing 13, final drive shaft 7 is arranged on by focusing component bearing 10 and adjusted
On burnt pedestal 3；Worm gear 11 is arranged on the centre position of final drive shaft 7；Two cams 8 are installed on focusing group by final drive shaft 9
The both sides of part bearing 10, two cams 8 are connected by cam slide 9 with focusing slide 2；First shaft end support 6, the second shaft end branch
Frame 14 is respectively arranged in the two ends of final drive shaft 7.
Illustrate present embodiment with reference to Fig. 2, the double cam focusing of the use absolute grating scale described in present embodiment
Mechanism is driven by motor 19, absolute grating scale 17 constitutes closed loop feedback.Motor 19 and absolute grating scale 17 are by the straight of+12V
Power supply is flowed to power for it.The rotary parts such as motor 19, final drive shaft 7 and worm shaft 12 are arranged on by respective bearing and bearing
Focus on pedestal 3, the mounting surface of each bearing all carries out the repair grinding of precision, it is ensured that the axiality of each rotary part requires excellent
In 0.003mm；The offset of two cams 8 determines (half that offset is focusing stroke) by focusing stroke,
It is 11mm that focusing stroke is taken in present embodiment, therefore the offset of two cams 8 is 5.5mm；Three straight lines are led
Rail 4 is the important component for ensureing mechanism kinematic precision, from micron order spherical guide, it is ensured that the depth of parallelism of three guide rails 4 is better than
0.003mm。
When being focused, motor 19 is powered, and drives worm shaft 12 to rotate by shaft coupling 18, worm shaft 12 is nibbled with worm gear 11
Resultant motion, and drive final drive shaft 7, cam 8 to rotate, cam 8 promotes focusing slide 2 to be slided along line slideway 4 by cam slide 9
Dynamic direction is for linear motion.After the completion of focusing, focus adjusting mechanism power-off.
In present embodiment, in order to ensure intensity and rigidity that mechanism is good, two cams 8 using high intensity steel alloy
(40Cr) is made, and quenches and stabilization processes, to ensure enough anti-wear performances；Focusing slide 2, focusing pedestal 3, the first shaft end
Support 6, two cam slides 9, focusing component bearing 10, worm bearing 13, the second shaft end supports 14 use high-strength low-density
Titanium alloy (TC4) be made, stabilization processes, install connection surface should all carry out repair grinding.
Present embodiment, as the displacement measurement mechanism of driven end, is eliminated using absolute grating scale 17 from principle
The hysterisis error of mechanism, improves focusing accuracy, enhances the controllability of focusing, is particularly suitable for use in the long focal plane of large scale, wants
Seek the focus adjusting mechanism of strict space optical remote sensor.
Claims (4)
1. the double cam focus adjusting mechanism based on absolute grating scale, mechanism includes focal plane component (1), focusing slide (2), focusing
Pedestal (3), line slideway (4), focusing component (5) and absolute grating scale (17)；It is characterized in that；The focal plane component (1)
It is installed on focusing slide (2), focusing slide (2) is connected by line slideway (4) with focusing pedestal (3), in focusing pedestal (3)
Absolute grating scale (17) is installed between focusing slide (2), focusing component (5) is installed on the top of focusing pedestal (3), and leads to
The double cam mechanism crossed in focusing component (5) is connected with focusing slide (2)；
The focusing component (5) also includes the first shaft end support (6), final drive shaft (7), focusing component bearing (10), worm gear
(11), worm shaft (12), worm bearing (13), the second shaft end support (14), shaft coupling (18) and motor (19)；
Each cam mechanism includes cam (8) and cam slide (9)；The worm shaft (12) is arranged on by worm bearing (13)
On focusing component bearing (10), the motor (19) is connected by shaft coupling (18) with worm shaft (12), and installed in worm screw branch
On seat (13), the final drive shaft (7) is arranged on focusing pedestal (3) by focusing component bearing (10)；The worm gear (11)
Centre position installed in final drive shaft (7)；The cam (8) is installed on focusing component bearing (10) by final drive shaft (7)
Both sides, the cam (8) by cam slide (9) with focusing slide (2) be connected；First shaft end support (6), the second axle
End support (14) is respectively arranged in the two ends of final drive shaft (7).
2. the double cam focus adjusting mechanism according to claim 1 based on absolute grating scale, it is characterised in that described burnt flat
Face component (1) includes CMOS, circuit board (15) and focal plane electronic box casing (16)；The CMOS and circuit board (15) are fixed on focal plane
In electronic box casing (16).
3. the double cam focus adjusting mechanism according to claim 2 based on absolute grating scale, it is characterised in that the focal plane
Electronic box casing (16) is made up of boron aluminium alloy.
4. the double cam focus adjusting mechanism based on absolute grating scale according to claim 1,2 or 3, it is characterised in that institute
Transmission main shaft (7), cam (8), worm shaft (12) is stated to be made up of steel alloy；The focusing slide (2), focusing pedestal (3), focusing
Assembly holder (10), cam slide (9), the first shaft end support (6) and the second shaft end support (4) are made by titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710511483.5A CN107087094B (en) | 2017-06-28 | 2017-06-28 | Double cam focus adjusting mechanism based on absolute grating scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710511483.5A CN107087094B (en) | 2017-06-28 | 2017-06-28 | Double cam focus adjusting mechanism based on absolute grating scale |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107087094A true CN107087094A (en) | 2017-08-22 |
| CN107087094B CN107087094B (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710511483.5A Active CN107087094B (en) | 2017-06-28 | 2017-06-28 | Double cam focus adjusting mechanism based on absolute grating scale |
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| Country | Link |
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| CN (1) | CN107087094B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303833A (en) * | 2018-03-26 | 2018-07-20 | 中国科学院西安光学精密机械研究所 | High-precision space focusing mechanism with annular layout |
| CN112099288A (en) * | 2020-09-30 | 2020-12-18 | 长光卫星技术有限公司 | Space camera focusing mechanism applied to conjugated double focal planes |
| CN112650014A (en) * | 2020-12-24 | 2021-04-13 | 四川长虹电器股份有限公司 | Method for calculating return stroke error of focusing motor of projection equipment and projection control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007171504A (en) * | 2005-12-21 | 2007-07-05 | Mitsumi Electric Co Ltd | Camera module |
| CN101718946A (en) * | 2009-11-04 | 2010-06-02 | 中国科学院长春光学精密机械与物理研究所 | Image plane focusing mechanism used for push-broom type aero remote sensor |
| JP2012098527A (en) * | 2010-11-02 | 2012-05-24 | Tamron Co Ltd | Lens barrel |
| CN102495458A (en) * | 2011-12-08 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Zooming transmission system with self-locking performance for zoom lens |
| CN102540391A (en) * | 2011-12-23 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Precision focusing mechanism taking linear motor and grating rulers as servo elements |
-
2017
- 2017-06-28 CN CN201710511483.5A patent/CN107087094B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007171504A (en) * | 2005-12-21 | 2007-07-05 | Mitsumi Electric Co Ltd | Camera module |
| CN101718946A (en) * | 2009-11-04 | 2010-06-02 | 中国科学院长春光学精密机械与物理研究所 | Image plane focusing mechanism used for push-broom type aero remote sensor |
| JP2012098527A (en) * | 2010-11-02 | 2012-05-24 | Tamron Co Ltd | Lens barrel |
| CN102495458A (en) * | 2011-12-08 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Zooming transmission system with self-locking performance for zoom lens |
| CN102540391A (en) * | 2011-12-23 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Precision focusing mechanism taking linear motor and grating rulers as servo elements |
Non-Patent Citations (1)
| Title |
|---|
| 刘磊等: "大视场长焦面光学遥感器双凸轮式焦面调焦机构", 《光学精密工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303833A (en) * | 2018-03-26 | 2018-07-20 | 中国科学院西安光学精密机械研究所 | High-precision space focusing mechanism with annular layout |
| CN108303833B (en) * | 2018-03-26 | 2024-06-04 | 中国科学院西安光学精密机械研究所 | High-precision space focusing mechanism with annular layout |
| CN112099288A (en) * | 2020-09-30 | 2020-12-18 | 长光卫星技术有限公司 | Space camera focusing mechanism applied to conjugated double focal planes |
| CN112650014A (en) * | 2020-12-24 | 2021-04-13 | 四川长虹电器股份有限公司 | Method for calculating return stroke error of focusing motor of projection equipment and projection control system |
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| Publication number | Publication date |
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| CN107087094B (en) | 2019-09-13 |
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Address after: No. 1299, Mingxi Road, Beihu science and Technology Development Zone, Changchun City, Jilin Province Patentee after: Changguang Satellite Technology Co.,Ltd. Address before: 130033 no.1759, Mingxi Road, North Gaoxin District, Changchun City, Jilin Province Patentee before: CHANG GUANG SATELLITE TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Double cam focusing mechanism based on absolute grating ruler Effective date of registration: 20230724 Granted publication date: 20190913 Pledgee: Industrial and Commercial Bank of China Limited Changchun Southern Urban Economic Development Zone Branch Pledgor: Changguang Satellite Technology Co.,Ltd. Registration number: Y2023220000056 |