CN101718945A - Aerial photograph central type shutter mechanism - Google Patents
Aerial photograph central type shutter mechanism Download PDFInfo
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- CN101718945A CN101718945A CN200910217898A CN200910217898A CN101718945A CN 101718945 A CN101718945 A CN 101718945A CN 200910217898 A CN200910217898 A CN 200910217898A CN 200910217898 A CN200910217898 A CN 200910217898A CN 101718945 A CN101718945 A CN 101718945A
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Abstract
The invention provides an aerial photograph central type shutter mechanism and belongs to the technical field of structural design of aerial cameras. The central type shutter mechanism comprises main parts including a high-speed motor, a one-circle clutch, a driving wheel system, two blades and the like. The invention adopts a technical scheme that: the motor is used for driving the two blades to continuously rotate so as to increase speed and efficiency; the one-circle clutch is used for controlling an exposure period; the carbon fiber(M40) blades with enough rigidity and size stability are used so as to solve the problem of narrow air space in an objective lens; and by adjusting the position of a photoelectric pair, the photoelectric pair can precisely transmit pulses at the exposure starting time and the exposure ending time. The central type shutter mechanism has the advantages that: the high-speed motor is combined with the one-circle clutch, so that the problem that the high-speed motor is difficult to control with the instant acceleration and the instant speed reduction is solved; and the rotary speed of the blades is adjusted by changing the rotary speed of the high-speed motor, so that the impact is avoided so as not to damage the central type shutter mechanically and improve image quality. Because an interface of the mechanism is changed, the mechanism can be applied to other cameras.
Description
Technical field:
The invention belongs to the aerial camera technical field, for aerial camera provides a kind of safe, reliable, aerial camera photograph central type shutter mechanism at a high speed and efficiently.
Background technology:
According to the difference of structure, be used for the magazine shutter of existing aeroplane photography and can be divided into three kinds of basic patterns---center type, venetian blind type and roller shutter type.Between-the-lens shutter is placed on the thinnest position of light beam between the light group of object lens usually, helps satisfying the requirement that physical dimension is little and the time shutter is short like this.Usually the object lens of focal length below 200mm all adopt between-the-lens shutter.The speed of between-the-lens shutter is also very important, because the aeroplane photography camera is to take static target at the volley, when the speed of a ship or plane one timing of aircraft, the speed that improves between-the-lens shutter can reduce blurring, improves the quality of photography; Increase clear aperature, satisfy the object lens in big Guang Lan aperture,, satisfy the luminous energy requirement to guarantee a considerable amount of ray cast being arranged to focal plane; The shutter speed height also helps to reduce the harmful effect that the aircraft concussion is brought.Usually the between-the-lens shutter of aeroplane photography camera adopts 3 or 4 blades, blade is with very big speed rotation, when expose termination and blade are finished motion, even also there is impingement phenomenon to take place under the situation of arrestment mechanism having, this not only diminishes the physical strength with shutter, and is also influential to resulting phase tablet quality.The rotational speed of blade can not be too high in general structure, and the heal moment of high shutter output of rotating speed is just bigger, therefore increased the size of the between-the-lens shutter of aeroplane photography camera.In addition, even the efficient of these shutters neither be the highest when only paddle cutout, because also do not reach minimum desired speed of time shutter at the moment blade that shutter is opened.So thereby the present invention adopts two blades of motor-driven to rotate raising speed continuously.Be the measuring accuracy of assurance aeroplane photography camera, and obtain blur-free imaging in big illumination range, the shutter that needs greater efficiency and broad time shutter range of adjustment adapts with it.Therefore adopt high speed between-the-lens shutter scheme, this between-the-lens shutter is simple in structure, efficient is higher, the time shutter range of adjustment is big, reliability is high.Between-the-lens shutter can satisfy the requirement to aeroplane photography camera measuring accuracy institute fully.
Summary of the invention:
For solve exist in the background technology mechanism's complexity, blade quantity too much, problem such as speed and efficient is not high.Technical scheme of the present invention: thus adopt two blades of motor-driven to rotate raising speed and efficient continuously; Adopt all clutch couplinges to control exposure cycle; Carbon fiber (M40) blade that employing has enough rigidity and dimensional stability solves the narrow problem in object lens airspace; By debuging photoelectricity, make its accurately emission exposure beginning and pulse finish time to the position.Photograph central type shutter mechanism comprises high-speed electric expreess locomotive, all clutch couplinges, train, two blade critical pieces.
Concrete structure of the present invention as shown in Figure 1 and Figure 2, comprise among Fig. 1 high-speed electric expreess locomotive 1, electric machine support 2, bevel gear adjusting pad 3, photoelectricity to adjustment rack 4, photoelectricity to 5, photoelectricity is to switch 6, A gear 7, B gear 8, A self-control nut 9, B self-control nut 10, A bevel gear 11, C gear 12, banjo 13, clutch coupling holder 14;
Fig. 2 is the diagrammatic cross-section of Fig. 1, comprising lower cover 15, A pressing plate 16, B pressing plate 17, A blade 18, B blade 19, B rotating shaft 20, B bearing (ball) cover 21, locating piece 22, A bearing (ball) cover 23, C bearing (ball) cover 24, A rotating shaft 25, D gear 26, C rotating shaft 27, B bevel gear 28, D bearing (ball) cover 29, A clutch base 30, E bearing (ball) cover 31, one all clutch couplinges 32, clutch coupling rotating shaft 33, B clutch base 34, F bearing (ball) cover 35, shutter housing 36, E gear 37.
The annexation of each member: B blade 19 by B pressing plate 17 and screw fastening with B rotating shaft 20, B rotating shaft 20 is by bearing and the bearing (ball) cover shutter housing 36 of packing into.A blade 18 is anchored on A rotating shaft 25 by A pressing plate 16 and screw, and by the bearing rotating shaft 2 of packing into.Fixing and A rotating shaft 25 and the B rotating shaft 20 by the self-control nut respectively of A gear 7 and B gear 8.
The C rotating shaft 27 shutter housing 36 of packing into, C gear 12 and D gear 26 fixing with C rotating shaft 27 on respectively with A gear 7 and 8 engagements of B gear, by the 24 fixation of C rotating shafts 27 of C bearing (ball) cover.A bevel gear 11 is fixed in the C rotating shaft 27 by the self-control nut.B bevel gear 28 is by all clutch coupling holders 14; Be fixed on the shutter housing and and mesh with A bevel gear 11.
Clutch coupling rotating shaft 33 and all clutch couplinges (32) are fastening by screw, are contained on the shutter housing 36 by clutch base 30, realize rotation by bearing between clutch coupling rotating shaft 33 and the clutch base 30.By clutch base 30 all clutch couplinges (32) and shutter housing 36 are linked, limit the one degree of freedom of all clutch couplinges.
High-speed electric expreess locomotive 1 is fixed on the shutter housing 36 by electric machine support 2, and high-speed electric expreess locomotive is connected by gear pair with all clutch couplinges.
Advantage of the present invention:
1 combines the photograph central type shutter mechanism that is applied to aerial camera with high-speed electric expreess locomotive with all clutch couplinges, has solved that moment quickens and moment slows down to the problem of high-speed electric expreess locomotive control difficulty;
The rotating speed of 2 blades is regulated by the rotating speed that changes high-speed electric expreess locomotive, realizes minimum time shutter 1/700s, improves the rotating speed of all clutch couplinges and can realize the littler time shutter.
3 when end exposure and blade are finished motion, have avoided impingement phenomenon, thereby have avoided the physical damage of between-the-lens shutter, improve image quality.
4 in exposure beginning moment, can reach desired speed of minimum exposure time, thereby improve the efficient of shutter.
5 by control one all clutch coupling may command exposure cycles.
6 these mechanisms change shutter housing interface, promptly can be applicable to other photographic camera.
Description of drawings:
Fig. 1 is the vertical view of photograph central type shutter mechanism, comprising high-speed electric expreess locomotive 1, electric machine support 2, bevel gear adjusting pad 3, photoelectricity to adjustment rack 4, photoelectricity to 5, photoelectricity is to switch 6, A gear 7, B gear 8, A self-control nut 9, B self-control nut 10, A bevel gear 11, C gear 12, banjo 13, clutch coupling holder 14;
Fig. 2 is the diagrammatic cross-section of Fig. 1, comprising lower cover 15, A pressing plate 16, B pressing plate 17, A blade 18, B blade 19, B rotating shaft 20, B bearing (ball) cover 21, locating piece 22, A bearing (ball) cover 23, C bearing (ball) cover 24, A rotating shaft 25, D gear 26, C rotating shaft 27, B bevel gear 28, D bearing (ball) cover 29, A clutch base 30, E bearing (ball) cover 31, one all clutch couplinges 32, clutch coupling rotating shaft 33, B clutch base 34, F bearing (ball) cover 35, shutter housing 36, E gear 37.
Embodiment:
Image aeroplane photography photograph central type shutter mechanism of the present invention such as Fig. 1, Fig. 2 and shown in Figure 3, it is material that A blade 18 and B blade 19 are selected carbon fiber (M40) respectively for use, has good rigidity, in humidity is 40～70%RH, under the condition of working temperature-50 ℃～+ 50 ℃, keep good dimensional stability; Be fixed in A rotating shaft 25 and the B rotating shaft 20 by A pressing plate 16 and B pressing plate 17 respectively.A rotating shaft 25 is installed in the B rotating shaft 20 by precision bearing, and two rotating shafts are concentric, the other end of two rotating shafts has been installed A gear 7 and B gear 8 respectively, respectively with C rotating shaft 27 on C gear 12 and D gear 26 engagement, the ratio of gear of two pairs of gear pairs was respectively 1: 1 and 4: 1.The transmission that is meshed with the B bevel gear 28 of the output terminal of all clutch couplinges of A bevel gear 11 in the C rotating shaft 27.One all clutch couplinges and B bevel gear 28 are connected by pin.One all clutch coupling input ends and clutch coupling rotating shaft 33 are connected by screw.E gear 37 is installed in the clutch coupling rotating shaft 33, and high-speed electric expreess locomotive 1 and all clutch couplinges 32 are by 37 transmissions of E gear.
When high-speed electric expreess locomotive drives all clutch coupling and rotates, the B bevel gear 28 of clutch coupling output terminal is passed to C gear 12 and D gear 26 in the C rotating shaft 27 with power by train, drive two blade rotation simultaneously by A rotating shaft 25 and B rotating shaft 20, wherein the rotating speed of a slice blade is 4 times of another sheet blade, is referred to as fast blade and slow blade respectively.Camera is taken pictures once, clutch coupling revolves and turns around, during the aperture diaphragm of the scallop hole on fast blade and the slow blade by optical system the camera exposure imaging once, fast blade guarantees that camera obtains the required time shutter, slow blade guarantees that the every one-tenth of camera is once as only the Guang Lan aperture being opened once.
Time shutter realizes by changing the shutter rotating speed of motor.The startup of blade and stop to rely on Clutch Control, the time interval of double exposure is provided by master controller.Scope effective exposure time of shutter is 1/100s～1/700s.
Claims (4)
1. an aeroplane photography photograph central type shutter mechanism is characterized in that comprising high-speed electric expreess locomotive (1), electric machine support (2), bevel gear adjusting pad (3), photoelectricity is to adjustment rack (4), photoelectricity is to (5), photoelectricity is to switch (6), A gear (7), B gear (80, A makes nut (9) by oneself, B makes nut (10) by oneself, A bevel gear (11), C gear (12), banjo (13), clutch coupling holder (14), lower cover (15), A pressing plate (16), B pressing plate (17), A blade (18), B blade (19), B rotating shaft (20), B bearing (ball) cover (21), locating piece (22), A bearing (ball) cover (23), C bearing (ball) cover (24), A rotating shaft (25), D gear (26), C rotating shaft (27), B bevel gear (28), D bearing (ball) cover (29), A clutch base (30), E bearing (ball) cover (31), one all clutch couplinges (32), clutch coupling rotating shaft (33), B clutch base (34), F bearing (ball) cover (35), shutter housing (36), E gear (37);
The annexation of each member: B blade (19) by B pressing plate (17) and screw be anchored on (with) B rotating shaft (20), B rotating shaft (20) is by bearing and the bearing (ball) cover shutter housing (36) of packing into, A blade (18) by A pressing plate (16) and screw be anchored on (with) A rotating shaft (25), and by the bearing rotating shaft (2) of packing into, A gear (7) and B gear (8) are fixed in A rotating shaft (25) and the B rotating shaft (20) by the self-control nut respectively;
C rotating shaft (27) the shutter housing (36) of packing into, C gear (12) and D gear (26) are fixed in the C rotating shaft (27), respectively with A gear (7) and B gear (8) engagement, by C bearing (ball) cover (24) fixation of C rotating shaft (27), A bevel gear (11) is fixed in the C rotating shaft (27) by the self-control nut, B bevel gear (28) is fixed on shutter housing (36) and goes up and mesh with A bevel gear (11) by all clutch coupling holders (14);
Clutch coupling rotating shaft (33) is fastening by screw with all clutch couplinges (32), be contained on the shutter housing (36) by clutch base (30), realize rotation by bearing between clutch coupling rotating shaft (33) and the clutch base (30), by clutch base (30) all clutch couplinges (32) and shutter housing (36) are linked, limit the one degree of freedom of all clutch couplinges;
High-speed electric expreess locomotive (1) is fixed on the shutter housing (36) by electric machine support (2), and high-speed electric expreess locomotive (1) is connected by gear pair with all clutch couplinges (32).
2. a kind of aeroplane photography photograph central type shutter mechanism according to claim 1 is characterized in that A blade (18) and B blade (19) are fixed in A rotating shaft (25) and the B rotating shaft (20) by A pressing plate (16) and B pressing plate (17) respectively.
3. a kind of aeroplane photography photograph central type shutter mechanism according to claim 1, it is characterized in that A rotating shaft (25) is installed in the B rotating shaft (20) by precision bearing, and two rotating shafts are concentric, the other end of two rotating shafts has been installed A gear (7) and B gear (8) respectively, respectively with C rotating shaft (27) on C gear (12) and D gear (26) engagement, the ratio of gear of two pairs of gear pairs was respectively 1: 1 and 4: 1.
4. a kind of aeroplane photography photograph central type shutter mechanism according to claim 1, it is characterized in that the transmission that is meshed with the B bevel gear (28) of the output terminal of all clutch couplinges (32) of A bevel gear (11) in the C rotating shaft (27), one all clutch couplinges (32) are connected by pin with B bevel gear (28), one all clutch couplinges (32) input end is connected by screw with clutch coupling rotating shaft (33), E gear (37) is installed in the clutch coupling rotating shaft (33), and high-speed electric expreess locomotive (1) passes through 37 transmissions of E gear with all clutch couplinges (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102178987A CN101718945B (en) | 2009-11-24 | 2009-11-24 | Aerial photograph central type shutter mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102178987A CN101718945B (en) | 2009-11-24 | 2009-11-24 | Aerial photograph central type shutter mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718945A true CN101718945A (en) | 2010-06-02 |
| CN101718945B CN101718945B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102178987A Expired - Fee Related CN101718945B (en) | 2009-11-24 | 2009-11-24 | Aerial photograph central type shutter mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393594A (en) * | 2011-12-06 | 2012-03-28 | 中国科学院长春光学精密机械与物理研究所 | Aviation mapping camera object lens center type shutter mechanism |
| CN102508389A (en) * | 2011-11-11 | 2012-06-20 | 中国科学院光电技术研究所 | Shutter with large aperture |
| CN103048849A (en) * | 2012-12-26 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Device and method for integrating fully-automatic diaphragm and shutter of area-array camera |
| CN109581782A (en) * | 2019-01-22 | 2019-04-05 | 长光卫星技术有限公司 | A kind of highly reliable center type mechanical shutter of Asia Millisecond |
-
2009
- 2009-11-24 CN CN2009102178987A patent/CN101718945B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508389A (en) * | 2011-11-11 | 2012-06-20 | 中国科学院光电技术研究所 | Shutter with large aperture |
| CN102508389B (en) * | 2011-11-11 | 2013-11-20 | 中国科学院光电技术研究所 | Shutter with large aperture |
| CN102393594A (en) * | 2011-12-06 | 2012-03-28 | 中国科学院长春光学精密机械与物理研究所 | Aviation mapping camera object lens center type shutter mechanism |
| CN103048849A (en) * | 2012-12-26 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Device and method for integrating fully-automatic diaphragm and shutter of area-array camera |
| CN109581782A (en) * | 2019-01-22 | 2019-04-05 | 长光卫星技术有限公司 | A kind of highly reliable center type mechanical shutter of Asia Millisecond |
| CN109581782B (en) * | 2019-01-22 | 2020-12-25 | 长光卫星技术有限公司 | Sub-millisecond-level high-reliability central mechanical shutter |
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| Publication number | Publication date |
|---|---|
| CN101718945B (en) | 2011-04-20 |
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Granted publication date: 20110420 Termination date: 20121124 |