CN101738820B - Focal plane curtain type shutter - Google Patents
Focal plane curtain type shutter Download PDFInfo
- Publication number
- CN101738820B CN101738820B CN2009102180008A CN200910218000A CN101738820B CN 101738820 B CN101738820 B CN 101738820B CN 2009102180008 A CN2009102180008 A CN 2009102180008A CN 200910218000 A CN200910218000 A CN 200910218000A CN 101738820 B CN101738820 B CN 101738820B
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- China
- Prior art keywords
- shutter
- curtain
- focal plane
- motor
- roll shafts
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- Expired - Fee Related
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- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Shutters For Cameras (AREA)
Abstract
The invention relates to a focal plane curtain type shutter and belongs to the structural design of a camera, in particular to a design of a focal plane curtain type shutter of a film type or large area array CCD camera. The shutter comprises a shutter frame, a motor, gears, a circumferential clutch, a shutter curtain, roll shafts, tension rolls, a limit switch and a coder. The parts have the following connecting relations that: the shutter frame is used as a main body structure of the shutter; the motor is connected with the circumferential clutch through a gear; the motor and the circumferential clutch are fixed on the shutter frame together; the circumferential clutch is connected with the roll shafts of the shutter through a pair of gears; the other end of each roll shaft of the shutter is connected with the coder; and the shutter curtain is arranged on the four roll shafts of the shutter, engaged with belt pulleys of the four roll shafts, and are tightened by two tension rolls. The focal plane curtain type shutter has the advantages that: the shutter has a simple structure, small external dimension, long service life and high reliability, changes a rotational speed of the shutter curtain so as to change the exposure time of the shutter according to weather illumination actually measured by a light measuring element in photography, and has strong real-time and high automation degree.
Description
Technical field
The invention belongs to the tripper that is used for aerial camera, belong to the camera architecture design, particularly the design of film type or big area array CCD camera focal plane curtain type shutter.
Background technology
Aerial reconnaissance is the important component part of military surveillance, the aerial reconnaissance camera is as main photographic reconnaissance equipment, up to now the development course that has experienced good several generations has developed into quite high level, especially big area array CCD camera of long-focus or broad-amplitude film camera have that photo opporunity is short, battlefield mobility is strong, the characteristics that the image geometry fidelity is high, development are rapidly.Because big area array CCD camera of long-focus or broad-amplitude film camera focal plane size are bigger, are difficult to meet the demands with between-the-lens shutter, so generally all adopt focal plane curtain type shutter.Adopt focal plane curtain type shutter to have the good characteristics of exposition uniformity, combining camera scanning mirror compensation mechanism can also carry out the gradual change IMC, therefore is used widely.The general structure of focal plane curtain type shutter of the technology comparative maturity of aerial camera application at present is complicated, more than 300 machining part is in addition arranged, 19 parts, 32 outsourcing electric elements, the gear train complexity comprises annular wheel, outer rotor, sector gear, planet wheel, 24 of total gears, 9 on cam, big (352 * 241 * 115) mm of unit of physical dimension, the requirement of incompatibility aerial camera miniaturization.And using inconvenience, easy break-down is difficult to safeguard.
Summary of the invention
Complicated in order to solve the general structure of focal plane curtain type shutter, the difficulty that physical dimension is bigger, the present invention proposes a kind of novel simple in structure, and the less focal plane curtain type shutter of physical dimension.
The focal plane curtain type shutter that the present invention proposes adopts the form of a curtain, the annular shutter curtain is an annular, opening width on the annular shutter curtain equates, uniform three slits on all directions, to a direction motion, whenever the commentaries on classics of the width of cloth picture annular of taking pictures when camera is taken a picture shutter curtain is parked in a position 1/3rd weeks, and so shuttling movement is taken pictures.Shown in figure (1), the movement velocity of annular shutter curtain is non-constant, and the size of shutter time shutter realizes by the movement velocity of adjusting annular shutter curtain.This shutter structure is simple, physical dimension is also less, the automaticity height, the weather illumination according to the photometry element actual measurement when taking pictures changes the size that shutter rotating speed of motor (range of speeds is 25 revolutions per seconds-83 revolutions per seconds) changes the shutter time shutter, real-time height.
Focal plane curtain type shutter adopts an annular curtain shuttling movement form, substitutes two curtain back and forth movement forms, opens on this annular annular shutter curtain that width equates and uniform three slits on all directions.This focal plane curtain type shutter also comprises: fast door frame, motor, gear, all clutch couplinges, annular shutter curtain, roll shaft, idler roller, limit switch, scrambler etc.
Position between each parts and annexation: fast door frame is as the agent structure of shutter, and motor is connected with all clutch couplinges by gear, and together is fixed on the fast door frame with all clutch couplinges.This focal plane curtain type shutter has 4 shutter roll shafts, all clutch coupling and a scrambler, and all clutch couplinges are that 7: 3 second gear is connected with one of them shutter roll shaft by a pair of speed ratio, and the other end of this shutter roll shaft links to each other with scrambler; The annular shutter curtain is formed by the cog belt transformation of the way, and annular shutter curtain is installed on 4 roll shafts of shutter, and the engagement of the belt wheel on 4 roll shafts, and by 2 idler roller tensionings, annular shutter curtain, roll shaft, idler roller together are installed on the fast door frame.
The advantage of focal plane curtain type shutter:
1 this shutter structure is simple, and physical dimension is less;
2 automaticity height, the rotating speed that changes annular shutter curtain according to the weather illumination of photometry element actual measurement when taking pictures changes the size of shutter time shutter, real-time height.
3 because simple in structure, and the life-span is long, the reliability height.
Description of drawings
Fig. 1 is the focal plane curtain type annular shutter curtain diagrammatic cross-section of annular curtain, wherein curtain seam 1,4 and 5, annular shutter curtain 2, roll shaft 3.
Fig. 2 is the left view of focal plane curtain type shutter structural drawing, wherein annular shutter curtain 2, roll shaft 3, idler roller 6.
Fig. 3 is a focal plane curtain type shutter structural drawing front view, its middle gear 7, motor 8, scrambler 9, gear 10, limit switch 11, one all clutch couplinges 12, fast door frame 13.
Embodiment
In order to realize the rotation of annular shutter curtain border, select for use the S3M cog belt as annular shutter curtain, select for use the cog belt wheel as roll shaft 3.Motor 8 rotates continuously during shutter work, and all clutch couplinges 12 disconnect, non-moment output this moment.When camera begins to take pictures, the phase machine controller sends the photography pulse, one all clutch coupling 12 energisings, fast door motor 8 is a pair of gear driven one all clutch coupling 12 rotations of 1: 1 by speed ratio, the logical 12 mistake speed ratios of one all clutch couplinges are that 7: 3 a pair of gear transmits torque on the shutter roll shaft 3, shutter rod axle 3 drives annular shutter curtain and does high-speed motion realization exposure, and shutter is controlled fast door motor 8 rotating speeds by the encoder feedback that is installed on the roll shaft 3.When annular shutter curtain 1/3rd weeks of rotation, limit switch is connected, all clutch coupling 12 outages, and annular shutter curtain 2 stops operating, the output of motor 8 non-moments, exposure is next time waited in motor idle running.When the shutter time shutter need change, control system changed motor 8 rotating speeds (range of speeds is 25 revolutions per seconds-83 revolutions per seconds), reached the purpose of adjusting the time shutter.
Accessible technical indicator
Exposition uniformity≤10%
Time shutter 1/50s～1/1500s
Claims (1)
1. focal plane curtain type shutter, it is characterized in that adopting an annular shutter curtain shuttling movement form, substitute two curtain back and forth movement forms, open on this annular shutter curtain (2) that width equates and uniform three slits, i.e. A curtain seam (1), B curtain seam (4), C curtain seam (5) on all directions; This focal plane curtain type shutter also comprises shutter roll shaft (3), idler roller (6), first gear (7), motor (8), scrambler (9), second gear (10), limit switch (11), all clutch couplinges (12), fast door frame (13);
Position between each parts and annexation: fast door frame (13) is as the agent structure of shutter, motor (8) is connected with all clutch couplinges (12) by gear (7), and together be fixed on the fast door frame (13) with all clutch couplinges (12), limit switch (11) is installed on the fast door frame (13) of output terminal of all clutch couplinges (12), this focal plane curtain type shutter has 4 shutter roll shafts (3), one one an all clutch coupling (12) and a scrambler (9), one all clutch couplinges (12) are that 7: 3 second gear (10) is connected with one of them shutter roll shaft (3) by a pair of speed ratio, and the other end of this shutter roll shaft (3) links to each other with scrambler (9); Annular shutter curtain (2) is installed on 4 roll shafts (3) of shutter, and with 4 roll shafts (3) on belt wheel engagement, by 2 idler rollers (6) tensioning, annular shutter curtain (2), roll shaft (3), idler roller (6) together are installed on the fast door frame (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102180008A CN101738820B (en) | 2009-12-15 | 2009-12-15 | Focal plane curtain type shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102180008A CN101738820B (en) | 2009-12-15 | 2009-12-15 | Focal plane curtain type shutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738820A CN101738820A (en) | 2010-06-16 |
| CN101738820B true CN101738820B (en) | 2011-09-28 |
Family
ID=42462474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102180008A Expired - Fee Related CN101738820B (en) | 2009-12-15 | 2009-12-15 | Focal plane curtain type shutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101738820B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393594B (en) * | 2011-12-06 | 2013-08-21 | 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 |
| CN103454832A (en) * | 2013-08-29 | 2013-12-18 | 中国科学院遥感与数字地球研究所 | One-layer reciprocating type curtain and one-layer reciprocating type focal plane multi-shutter device |
| CN103605251B (en) * | 2013-11-07 | 2016-06-08 | 中国科学院紫金山天文台 | The heavy caliber belt-type shutter of astronomical telescope CCD camera |
| CN104297917B (en) * | 2014-10-22 | 2016-09-21 | 中国科学院光电技术研究所 | Rolling shutter type protective device for telescope main lens cone |
| CN110824808B (en) * | 2019-11-28 | 2021-09-07 | 中国科学院光电技术研究所 | Focal plane curtain type shutter |
-
2009
- 2009-12-15 CN CN2009102180008A patent/CN101738820B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101738820A (en) | 2010-06-16 |
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Legal Events
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| C06 | Publication | ||
| 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: 20110928 Termination date: 20121215 |