CN102707544A - Focusing mechanism of high-precision mapping camera - Google Patents
Focusing mechanism of high-precision mapping camera Download PDFInfo
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- CN102707544A CN102707544A CN2012101768118A CN201210176811A CN102707544A CN 102707544 A CN102707544 A CN 102707544A CN 2012101768118 A CN2012101768118 A CN 2012101768118A CN 201210176811 A CN201210176811 A CN 201210176811A CN 102707544 A CN102707544 A CN 102707544A
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Abstract
The invention discloses a focusing mechanism of a high-precision mapping camera and belongs to the technical field of remote sensing of space optics. The focusing mechanism can be used for reducing transmission error, axial error and radial error of the focusing mechanism and realizing high-precision focusing. The focusing mechanism comprises a focusing motor assembly, a cam assembly, an image lens barrel, an encoder assembly, a rear camera lens barrel, a retainer and a retainer thrust part. The focusing mechanism of the high-precision mapping camera disclosed by the invention satisfies requirements of a stereo mapping satellite to the mapping precision, is an indispensable key technique for the high-precision stereo mapping and an important technical guarantee for the successful launch of the first transmission type stereo mapping satellite in China and has important value in the stereo mapping field and even in the optical technology field.
Description
Technical field
The invention belongs to the space optical remote technical field, be specifically related to a kind of focus adjusting mechanism of high precision mapping camera.
Background technology
Mode transmission stereo mapping satellite is an effective means of obtaining the global range geospatial information; Be used for obtaining fast the 3 D stereoscopic image of global range; Handle through the ground mapping, the accurate three-dimensional of implementing to strike target is located, and generates global framework basis geography information.For the combined operation under global emergent operation of my army and the present information war condition provide geography information guarantee fast, accurately.
The high precision mapping camera is a stereo mapping satellite key optical useful load; Form by three high precision mapping cameras independently; Keep certain position relation between three cameras, ground is pushed away to sweep forming three width of cloth and have certain visual angle and overlapped air strips image.
Because mapping camera optical system focal length is longer; The vibration of satellites transmits process, impact and the influence at environment such as rail temperature, pressure complicated and changeable; The cameral CCD target surface is incited somebody to action the focal plane that departs from camera in various degree; Cause imaging resolution to descend, and the variable quantity of the principal point positional precision of camera and main distance directly influence the terrain object bearing accuracy.In order to satisfy the bearing accuracy of mapping camera ground pixel resolution and terrain object, camera need be designed with focusing ring and save the defocusing amount with compensation CCD target surface, and the focus adjusting mechanism of camera also need be guaranteed the positional precision of principal point.
Summary of the invention
In order to solve the problem that exists in the prior art, the invention provides a kind of focus adjusting mechanism of high precision mapping camera, this focus adjusting mechanism can reduce driving error, axial error and the radial error of focus adjusting mechanism, realizes the high precision focusing.
The technical scheme that technical solution problem of the present invention is adopted is following:
A kind of focus adjusting mechanism of high precision mapping camera, this focus adjusting mechanism comprises: lens barrel, retainer and retainer thrust parts behind focusing electric machine assembly, cam pack, image planes lens barrel, encoder component, the camera;
The focusing electric machine assembly comprises: first gear, second gear, clutch shaft bearing, worm screw, deceleration box, the 3rd gear, motor, worm-wheel shaft and worm gear; First gear is connected with motor; First gear driven, second gear, both gear motions; Second gear is fixedly connected with worm screw, and worm screw is respectively by the clutch shaft bearing and second bearings, and the clutch shaft bearing and second bearing fixing are on deceleration box; Worm screw drives the 3rd gear through worm gear and worm-wheel shaft and rotates, and the 3rd gear is fixed on the worm-wheel shaft; Motor is fixed on the deceleration box;
Cam pack comprises: cam, gear ring, little axle, little axle bearing, transition axis and transition axle bed, and gear ring and the 3rd gearing mesh, cam is fixedly connected with gear ring; The transition axle bed is fixed on the image planes lens barrel, and the cam upper end is connected with the transition axle bed with little axle bearing through the little axle that is fixed on first transition axis, and the cam lower end is connected with the transition axle bed with little axle bearing through the little axle that is fixed on second transition axis;
Encoder component comprises: scrambler, first gap gear and the second gap gear that disappears that disappears; The second gap gear that disappears is fixed on the scrambler; Scrambler is fixed on the lens barrel of back, and first disappear gap gear and the gear ring of gap gear and second that disappear meshes; First gap gear and the second gap gear relative motion that disappears that disappears.
Retainer comprises: first retainer, second retainer, the 3rd retainer and the 4th retainer; First retainer and second retainer keep the position of cam pack; The 3rd retainer and the 4th retainer keep the position of image planes lens barrel; First retainer, second retainer, the 3rd retainer and the 4th retainer are installed in behind the camera in the lens barrel;
Retainer thrust parts comprise: thrust plate grinds pad with repairing, and thrust plate grinds pad thrust second retainer with repairing.
Principle of work of the present invention: external piloting control system control focusing electric machine assembly work; The transmission of torque of focusing electric machine assembly output is given cam pack; Convert gyration the rectilinear motion of image planes lens barrel into, move the image planes lens barrel, the scenery picture is become clearly on the focal plane of camera along optical axis; Encoder component passes to the external piloting control system through the amount of movement of cam pack detection image planes lens barrel with information.
The invention has the beneficial effects as follows: the present invention satisfies the requirement of stereo mapping satellite surveying and mapping precision; It is the indispensable gordian technique of high precision stereo mapping; Successful launch to China's first mode transmission stereo mapping satellite is the important techniques guarantee, and stereo survey field and even optical technical field all have important value.
Description of drawings
The main TV structure figure of the focus adjusting mechanism of a kind of high precision mapping camera of Fig. 1 the present invention.
The A-A cut-open view of Fig. 2 Fig. 1 of the present invention.
The focus vertical view cutaway drawing of electric machine assembly of Fig. 3 the present invention.
The E-E cut-open view of Fig. 4 Fig. 2 of the present invention.
The D-D cut-open view of Fig. 5 Fig. 1 of the present invention.
The F-F cut-open view of Fig. 6 Fig. 4 of the present invention.
Fig. 7 is the structural design drawing of cam pack.
Fig. 8 is the structural design drawing of encoder component.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
As depicted in figs. 1 and 2, a kind of focus adjusting mechanism of high precision mapping camera, this focus adjusting mechanism comprises: lens barrel 32, retainer and retainer thrust parts behind focusing electric machine assembly, cam pack, image planes lens barrel 41, encoder component and the camera.
As shown in figures 1 and 3, the focusing electric machine assembly comprises: first gear 4, second gear 7, worm screw 9, deceleration box 10, the 3rd gear 20, motor 67, worm-wheel shaft 69 and worm gear 76; Focusing electric machine assembly casing is fixed on the focusing electric machine assembly behind the camera on the lens barrel 32 through screw 1 in this enforcement; Pin 2 guarantees the reseting precision of focusing electric machine assembly; Screw 3 is fixed on motor 67 on the deceleration box 10, and motor 67 drives 4 rotations of first gear, and is by pin 6 and back-up ring 5 that first gear 4 is fixing; First gear 4 drives second gear 7, both gear motions; Second gear 7 is fixedly connected with worm screw 9, and worm screw 9 is supported by the clutch shaft bearing 8 and second bearing 12 respectively, and second bearing 12 is fixed on the deceleration box 10 through bearing gland 11, and gland 11 is fixing by screw 13; Worm screw 9 drives the 3rd gear 20 through worm gear 76 and worm-wheel shaft 69 and rotates; The 3rd gear 20 is fixed on the worm-wheel shaft 69 through pin 22 and back-up ring 21; Worm-wheel shaft 69 is supported by the 3rd bearing 68 and the 4th bearing 74 respectively, and worm-wheel shaft 69 is fixed on the worm gear 76 through pin 70 and back-up ring 71; Technology lid 15 is fixed on the deceleration box 10 through screw 14; Case lid 72 is fixed on the deceleration box 10 through screw 73; The 4th bearing 74 is fixed on the deceleration box 10 through bearing gland 75 and screw 80, and worm gear 76 is repaiied the good engagement of cutting cover 77 assurances and worm screw 9 through worm gear.
In the present embodiment; Like Fig. 2, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7; Cam pack comprises: cam 18, gear ring 19, little axle 23,26,52,55, little axle bearing 25,28,51,57, transition axis 27,66 and transition axle bed 37,64, gear ring 19 and 20 engagements of the 3rd gear.As shown in Figure 7, cam 18 is fixedly connected through special screw 42 with gear ring 19, and cam 18 has the double cam curve; Steel ball 16,31,33,40 and retainer 17,29,34,39 are formed retainer, and first retainer 16,17 and second retainer 31,29 keep cam 18 to rotate on optical axis; The 3rd retainer 33,34 and the 4th retainer 40,39 keep image planes lens barrel 41 to move forward and backward along optical axis; First retainer 16,17 and second retainer 31,29 through thrust plate 30 and repair grind the pad 36 thrusts; Thrust plate 30 is fixed on the lens barrel 32 of back through screw 35; The 3rd retainer 33,34 is fixing through special screw 49, and first retainer, second retainer, the 3rd retainer 33,34 and the 4th retainer 40,39 are installed in behind the camera in the lens barrel 32; Transition axis 27,66 is fixed on the transition axle bed 37,64 through major part screw 38,65; Transition axle bed 37,64 is through screw 59 and sell 60 and be fixed on the image planes lens barrel 41; Cam 18 upper ends are connected with transition axle bed 37 with four little axle bearings 25,28,51,57 through being fixed on the little axle of on first transition axis 27 four 23,26,52,55; The cam lower end is connected with transition axle bed 64 with four little axle bearings 62 through being fixed on the little axle of on second transition axis 66 four 63; Cam 17 has played the effect of the backlash that disappears through little axle and little axle bearing in the process of rotation; Little axle keeps being connected with the tight of bearing inner race through back-up ring 24,53,54,56,61, and jackscrew 50,58 prevents that little axle from rotating.
In the present embodiment, like Fig. 1, Fig. 2 and shown in Figure 8, encoder component and gear ring 19 engagements respectively have one group in gear ring 19 both sides, and wherein a group coding device assembly is subsequent use; Encoder component comprises: scrambler 48, first disappear gap gear 43, second disappear gap gear 44 and extension spring 78; The second gap gear 44 that disappears is fixed on the scrambler 48 through pin 46 and back-up ring 45; First gap the gear 43 and second gap gear 44 that disappears that disappears is connected with extension spring 78 through screw axis 47; Scrambler 48 is fixed on the lens barrel 32 of back through screw 79, and first disappear gap gear 44 and the gear ring 19 of gap gear 43 and second that disappear is connected with a joggle; First gap gear 43 and second gap gear 44 relative motions that disappear that disappear, extension spring 78 keep first tooth that gap gear 43 and second disappears gap gear 44 that disappears to stagger each other.
Implement by structure shown in Figure 7.Gear ring 19 machining precisioies are 4-5-4DE GB10095-88, the external diameter bedding-in of the endoporus of gear ring 19 and cam 18, and the gap is 0.008-0.012mm.Strict guarantee is wanted in the processing of cam 18 cam paths, takes special process to guarantee that cam path is indeformable.
Implement by structure shown in Figure 8.The gap teeth wheels that disappear are formed in screw axis 47, first gap gear 43, second gap gear 44 and the extension spring 78 that disappear that disappear.First disappears, and machining precision that gap gear 43 and second disappears gap gear 44 is: 5-6-5DE GB10095-88.
In order to satisfy the precision of stereo mapping, the technical requirement that the focus adjusting mechanism of mapping camera is proposed is:
1, the driving error of focus adjusting mechanism < ± 8 μ m (3 σ);
2, the focusing stroke in, the CCD target surface around optical axis rotate≤5 "
3, promptly in the focusing stroke, the rectilinearity precision of CCD target surface is the principal point positional precision: directions X: 60 ", Y direction: 60 ";
4, focusing stroke: ± 1mm.
This focus adjusting mechanism to design carries out the driving error analysis and the rectilinearity accuracy detection draws:
1, the driving error of this focus adjusting mechanism: ± 1.71 μ m;
2, the CCD target surface is around the rotation of optical axis: 4.7 〞;
3, the rectilinearity precision of CCD target surface: directions X 11.2 〞, Y direction 11.8 〞;
4, focusing stroke: ± 2mm.
Claims (7)
1. the focus adjusting mechanism of a high precision mapping camera is characterized in that, this focus adjusting mechanism comprises: lens barrel (32), retainer and retainer thrust parts behind focusing electric machine assembly, cam pack, image planes lens barrel (41), encoder component, the camera;
Said focusing electric machine assembly comprises: first gear (4), second gear (7), worm screw (9), deceleration box (10), the 3rd gear (20), motor (67), worm-wheel shaft (69) and worm gear (76); Said first gear (4) is connected with motor (67); First gear (4) drives second gear (7), both gear motions; Second gear (7) is fixedly connected with worm screw (9); Worm screw (9) drives the 3rd gear (20) through worm gear (76) and worm-wheel shaft (69) and rotates, and the 3rd gear (20) is fixed on the worm-wheel shaft (69); Motor (67) is fixed on the deceleration box (10);
Said cam pack comprises: cam (18), gear ring (19), little axle, little axle bearing, first transition axis (27), the first transition axle bed (37), second transition axis (66) and the second transition axle bed (64); Said gear ring (19) and the 3rd gear (20) engagement, cam (18) is fixedly connected with gear ring (19); The first transition axle bed (37) and the second transition axle bed (64) are fixed on the image planes lens barrel (41); Cam (18) upper end is connected with the first transition axle bed (37) with little axle bearing through the little axle that is fixed on first transition axis (27), and cam (18) lower end is connected with the second transition axle bed (64) with little axle bearing through the little axle that is fixed on second transition axis (66);
Said encoder component comprises: scrambler (79), first gap gear (43) and the second gap gear (44) that disappears that disappears; The second gap gear (44) that disappears is fixed on the scrambler (79); Scrambler (79) is fixed on back lens barrel (32), and first disappear gap gear (44) and the gear ring (19) of gap gear (43) and second that disappear is connected with a joggle; First gap gear (43) and second gap gear (44) relative motion that disappears that disappears;
Said retainer comprises first retainer, second retainer, the 3rd retainer and the 4th retainer; Said first retainer and second retainer keep the position of cam pack; The 3rd retainer and the 4th retainer keep the position of image planes lens barrels (41); First retainer, second retainer, the 3rd retainer and the 4th retainer are installed in behind the camera in the lens barrel (31);
Said retainer thrust parts comprise: thrust plate (30) and repair and grind pad (36), thrust plate (30) and repair and grind pad (36) thrust second retainer.
2. the focus adjusting mechanism of a kind of high precision mapping camera as claimed in claim 1 is characterized in that, said cam (18) has the double cam curve.
3. the focus adjusting mechanism of a kind of high precision mapping camera as claimed in claim 1 is characterized in that, said retainer is made up of retainer and steel ball.
4. the focus adjusting mechanism of a kind of high precision mapping camera as claimed in claim 1 is characterized in that, said focusing electric machine assembly also comprises bearing gland, and bearing is fixed on the deceleration box (10) through said bearing gland.
5. the focus adjusting mechanism of a kind of high precision mapping camera as claimed in claim 1 is characterized in that, said focusing electric machine assembly comprises also that worm gear is repaiied and cut cover (71), and said worm gear (76) is repaiied through worm gear and cut cover (71) and be connected with worm screw (9).
6. the focus adjusting mechanism of a kind of high precision mapping camera as claimed in claim 1; It is characterized in that; Said encoder component also comprises extension spring (78), and extension spring (78) keeps first the disappear tooth of gap gear (44) of gap gear (43) and second that disappears to stagger each other.
7. the focus adjusting mechanism of a kind of high precision mapping camera as claimed in claim 1 is characterized in that, the material of lens barrel behind the said camera (32) is a cast titanium alloy, and the hardness after its surface ion chloridized is more than or equal to 38HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101768118A CN102707544A (en) | 2012-05-31 | 2012-05-31 | Focusing mechanism of high-precision mapping camera |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101768118A CN102707544A (en) | 2012-05-31 | 2012-05-31 | Focusing mechanism of high-precision mapping camera |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389607A (en) * | 2013-07-17 | 2013-11-13 | 中测新图(北京)遥感技术有限责任公司 | Aerial camera focal plane tuning method |
| CN105467542A (en) * | 2015-12-02 | 2016-04-06 | 中国科学院长春光学精密机械与物理研究所 | Side focusing device for dual-enclosed plane cam |
| CN104656224B (en) * | 2015-02-12 | 2016-11-30 | 中国科学院长春光学精密机械与物理研究所 | It is applied to the high accuracy focus adjusting mechanism of space optical remote sensor |
| CN108073015A (en) * | 2017-12-08 | 2018-05-25 | 中国科学院长春光学精密机械与物理研究所 | A kind of high-precision linear focus adjusting mechanism for space camera |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392020Y (en) * | 1999-08-12 | 2000-08-16 | 窦小平 | Four split, strong force upset bolt |
| US20070053675A1 (en) * | 2005-09-08 | 2007-03-08 | Pollard Stephen B | Image data processing method and apparatus |
| US20070189750A1 (en) * | 2006-02-16 | 2007-08-16 | Sony Corporation | Method of and apparatus for simultaneously capturing and generating multiple blurred images |
-
2012
- 2012-05-31 CN CN2012101768118A patent/CN102707544A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392020Y (en) * | 1999-08-12 | 2000-08-16 | 窦小平 | Four split, strong force upset bolt |
| US20070053675A1 (en) * | 2005-09-08 | 2007-03-08 | Pollard Stephen B | Image data processing method and apparatus |
| US20070189750A1 (en) * | 2006-02-16 | 2007-08-16 | Sony Corporation | Method of and apparatus for simultaneously capturing and generating multiple blurred images |
Non-Patent Citations (3)
| Title |
|---|
| 张海青等: "航天立体测绘相机调焦机构的设计与实验研究", 《机械设计与制造》, no. 4, 30 April 2009 (2009-04-30) * |
| 李朝辉等: "三线阵立体测绘相机高精度调焦技术及实现", 《光电工程》, vol. 36, no. 10, 31 October 2009 (2009-10-31) * |
| 王智等: "传输型立体测绘相机的调焦机构设计", 《光学 精密工程》, vol. 17, no. 5, 31 May 2009 (2009-05-31) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389607A (en) * | 2013-07-17 | 2013-11-13 | 中测新图(北京)遥感技术有限责任公司 | Aerial camera focal plane tuning method |
| CN103389607B (en) * | 2013-07-17 | 2016-03-16 | 中测新图(北京)遥感技术有限责任公司 | Aerial camera focal plane adjusting process |
| CN104656224B (en) * | 2015-02-12 | 2016-11-30 | 中国科学院长春光学精密机械与物理研究所 | It is applied to the high accuracy focus adjusting mechanism of space optical remote sensor |
| CN105467542A (en) * | 2015-12-02 | 2016-04-06 | 中国科学院长春光学精密机械与物理研究所 | Side focusing device for dual-enclosed plane cam |
| CN105467542B (en) * | 2015-12-02 | 2017-09-12 | 中国科学院长春光学精密机械与物理研究所 | A kind of lateral focus control of dual sealing plane cam |
| CN108073015A (en) * | 2017-12-08 | 2018-05-25 | 中国科学院长春光学精密机械与物理研究所 | A kind of high-precision linear focus adjusting mechanism for space camera |
| CN108073015B (en) * | 2017-12-08 | 2020-03-13 | 中国科学院长春光学精密机械与物理研究所 | High-precision linear focusing mechanism for space camera |
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Application publication date: 20121003 |