CN109581783A - Objective lens center type mechanical shutter for aerial camera - Google Patents
Objective lens center type mechanical shutter for aerial camera Download PDFInfo
- Publication number
- CN109581783A CN109581783A CN201910056801.2A CN201910056801A CN109581783A CN 109581783 A CN109581783 A CN 109581783A CN 201910056801 A CN201910056801 A CN 201910056801A CN 109581783 A CN109581783 A CN 109581783A
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- Prior art keywords
- gear
- pulley
- motor
- blade
- shutter
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Classifications
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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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
- G03B9/18—More than two members
- G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shutters For Cameras (AREA)
Abstract
The invention provides an objective lens central type mechanical shutter for an aerial camera, and belongs to the technical field of mechanical shutters. The shutter comprises a supporting frame, a motor delay driving mechanism, a shutter motion triggering mechanism and an iris diaphragm assembly, wherein the shutter motion triggering mechanism consists of three transmission mechanisms, namely a ratchet wheel, a gear and a crank slider. According to the invention, the motor is driven to rotate for a set number of turns through the motor delay driving mechanism and then the driving swing rod is driven through the transmission device, so that the influence caused by overlong starting time of the motor is reduced; the active swing rod in the shutter motion trigger mechanism rotates in one direction to realize one-time exposure action, and the motor does not need reversing. The central mechanical shutter structure can reduce the influence caused by the starting and reversing time of the motor, can realize shorter exposure time and is easy to adjust.
Description
Technical field
The invention belongs to mechanical shutter technical fields, mechanical fast with object lens center type more particularly to a kind of aerial camera
Door.
Background technique
Mechanical shutter is the duration control mechanism for making camera photosensitive element obtain proper exposure amount；In aeroplane photography,
The image for obtaining high quality should also correctly control the time for exposure other than using high-resolution object lens and image forming medium
Sensor devices are made to obtain suitable light exposure.Aerial surveying camera is mounted on unmanned plane, due to unmanned plane during flying fast speed,
There is fuzzy and trailing phenomenon as moving to will lead to camera and shoot to obtain image；To reduce as moving the influence to imaging, need to control
The time for exposure of shutter is in reasonable range.For the between-the-lens shutter of type motor-driven, motor direct-drive blade is dialled
Disk rotation realizes blade opening and closing by the positive and negative rotation of motor, since the starting of motor under voltage rating and commutating period need
10ms or more, it is difficult to realize therefore the shorter time for exposure develops a kind of type motor-driven that can be realized short exposure time
Between-the-lens shutter have great importance.
Summary of the invention
The present invention is intended to provide a kind of time for exposure is short, the time for exposure is adjustable, in the type motor-driven of high reliablity
Core type mechanical shutter reduces the starting and limitation of the commutating period to the time for exposure of motor, and shortening shutter can reach most short
Time for exposure.
The purpose of the invention patent is achieved through the following technical solutions:
A kind of aerial camera object lens center type mechanical shutter, including bearing support and the second straight line being arranged on bearing support
Slot, spring strut, the first limited post, first rotating shaft, the second limited post, the second shaft and third shaft, on the support frame
Motor delay and running mechanism, shutter movement trigger mechanism and iris diaphgram component are installed；
Motor delay and running mechanism includes being mounted on the first spring of spring strut, first be mounted on motor cunning
Wheel, motor, the first driving line, the second driving line, second pulley, third pulley and block bead；The second pulley and third is sliding
Take turns affixed, the second pulley is mounted in first rotating shaft, and hemispherical groove is provided in second pulley；The first driving line
Both ends be separately mounted on the first spring and third pulley, it is described second driving line both ends be respectively wound around first pulley and
In second pulley, it is provided with block bead on the second driving line, in the initial state, block bead is located at hemispherical for motor delay and running mechanism
In groove；When motor delay and running mechanism is in running order, under the drive of the motor, first pulley rotation sets fixing turn
Afterwards, block bead leaves hemispherical groove position and actively fork is driven to rotate；
The shutter movement trigger mechanism includes connecting rod, pawl, actively fork, ratchet, first gear, second gear,
Three gears, the 4th gear, crank, blade driver plate push rod, sliding block, second spring, baffle, torsional spring and optoelectronic switch, the active
Anti-dazzling screen and first straight line slot are provided on swing rod, actively fork is mounted in third shaft and the second driving line passes through first directly
Wire casing, pawl and torsional spring are mounted in actively fork；The ratchet and first gear are affixed, and second gear and third gear are solid
It connects, the 4th gear and crank are affixed, and first gear and the 4th gear are mounted in third shaft, and second gear is mounted on second turn
On axis；The first gear is engaged with second gear, and third gear is engaged with the 4th gear；The optoelectronic switch is mounted on first
On limited post, first limited post and the second limited post are for the limit to actively fork；It is straight that the sliding block is mounted on second
On wire casing and by baffle limiting, sliding block can move along a straight line along second straight line slot, and blade driver plate push rod and sliding block are affixed,
On second spring is mounted on sliding block；The connecting rod is mounted on crank and sliding block.
The iris diaphgram component includes blade fixed disk, blade driver plate and blade, is set in the blade fixed disk
Annular groove is set, blade driver plate is mounted in the annular groove being arranged in blade fixed disk, and blade is mounted on blade driver plate
On.
Preferably, slide bar is set on the sliding block, second spring is mounted on slide bar.
Preferably, the blade driver plate push rod is equipped with the first pin shaft.
Preferably, the blade driver plate is equipped with third straight-line groove and the second pin shaft.
Preferably, blade is equipped with the 4th straight-line groove.
Preferably, the first pin shaft is located in third straight-line groove, and the second pin shaft is located in the 4th straight-line groove.
Preferably, the quantity of the blade is 5.
Preferably, the material of the blade is high elastic modulus carbon fiber.
Beneficial effects of the present invention
Motor may be implemented by motor delay and running mechanism with object lens center type mechanical shutter in aerial camera of the invention
During startup, rotation does not drive actively fork before setting fixing turn, after the circle number of motor rotation is more than to set fixing turn, passes through
Block bead on second driving line drives actively fork, realizes shutter, this driving method can reduce motor starting time
Too long bring influences.Single exposure movement can be realized in actively fork one-directional rotation in shutter movement trigger mechanism, and motor is not
It needs to commutate.Shutter structure form in the present invention, which can reduce electric motor starting and commutating period bring, to be influenced, and can be realized
The shorter time for exposure, the adjusting of time for exposure is by changing motor speed realization, easily controllable and adjusting.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of aerial camera object lens center type mechanical shutter of the present invention.
Fig. 2 is the front view of motor delay and running mechanism and shutter movement trigger mechanism.
Fig. 3 is the rearview of motor delay and running mechanism and shutter movement trigger mechanism.
Fig. 4 is the original state schematic diagram of motor delay and running mechanism.
Fig. 5 is the working state schematic representation of motor delay and running mechanism.
In figure, 1. first springs, 2. first pulleys, 3. motors, 4. first driving lines, 5. second driving lines, 6. connecting rods, 7.
Pawl, 8. actively forks, 8-1. anti-dazzling screen, 8-2. first straight line slot, 9. second pulleys, 9-1. hemispherical groove, 10. thirds are sliding
Wheel, 11. third gears, 12. cranks, 13. the 4th gears, 14. first gears, 15. blade driver plate push rods, the first pin shaft of 15-1.,
16. sliding block, 16-1. slide bar, 17. second springs, 18. baffles, 19. ratchets, 20. torsional springs, 21. second gears, 22. bearing supports,
22-1. second straight line slot, 22-2. spring strut, the first limited post of 22-3., 22-4. first rotating shaft, the second limited post of 22-5.,
The second shaft of 22-6., 22-7. third shaft, 23. optoelectronic switches, 24. blade driver plates, 24-1. third straight-line groove, 24-2. second
Pin shaft, 25. blade fixed disks, 25-1. third pin shaft, 26. blades, the 4th straight-line groove of 26-1., 27. block beads.
Specific embodiment
The invention patent is further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of aerial camera object lens center type mechanical shutter, comprising: bearing support 22 and setting are supporting
Second straight line slot 22-1, spring strut 22-2, the first limited post 22-3, first rotating shaft 22-4, the second limited post 22- on frame 22
5, the second shaft 22-6 and third shaft 22-7 installs motor delay and running mechanism, shutter movement touching on the support frame 22
Send out mechanism and iris diaphgram component；
As shown in Figures 2 to 5, motor delay and running mechanism includes the first spring 1, first pulley 2, motor 3, first
Line 4, second is driven to drive line 5, second pulley 9, third pulley 10 and block bead 27；First spring 1 is mounted on spring strut
On 22-2；First pulley 2 is mounted on motor 3, and second pulley 9 and third pulley 10 are affixed, and the second pulley 9 is mounted on
On one shaft 22-4, hemispherical groove 9-1 is provided in second pulley 9；The both ends of the first driving line 4 are separately mounted to the
On one spring 1 and third pulley 10, the both ends of the second driving line 5 are respectively wound around in first pulley 2 and second pulley 9,
Block bead 27 is provided on second driving line 5.In the initial state, block bead 27 is located at hemispherical groove 9- for motor delay and running mechanism
In 1；When motor delay and running mechanism is in running order, under the driving of motor 3, after the rotation of first pulley 2 sets fixing turn,
Block bead 27 leaves the position hemispherical groove 9-1 and actively fork 8 is driven to rotate.
As shown in Figure 1 to Figure 3, the shutter movement trigger mechanism include connecting rod 6, pawl 7, actively fork 8, ratchet 19,
First gear 14, second gear 21, third gear 11, the 4th gear 13, crank 12, blade driver plate push rod 15, sliding block 16, second
Spring 17, baffle 18, torsional spring 20 and optoelectronic switch 23.Anti-dazzling screen 8-1 and first straight line slot 8- are provided in the actively fork 8
2, actively fork 8 is mounted on third shaft 22-7 and the second driving line 5 passes through first straight line slot 8-2, and pawl 7 and torsional spring 20 are pacified
In actively fork 8；The ratchet 19 and first gear 14 are affixed, and second gear 21 and third gear 11 are affixed, the 4th tooth
Wheel 13 and crank 12 are affixed, and first gear 14 and the 4th gear 13 are mounted on third shaft 22-7, and second gear 21 is mounted on
On second shaft 22-6；The first gear 14 is engaged with second gear 21, and third gear 11 is engaged with the 4th gear 13；It is described
Optoelectronic switch 23 is mounted on the first limited post 22-3, and the first limited post 22-3 and the second limited post 22-5 are used for actively
The limit of swing rod 8；The sliding block 16 is mounted on second straight line slot 22-1 and is limited by baffle 18, and sliding block 16 can be along second
Straight-line groove 22-1 moves along a straight line, and blade driver plate push rod 15 is affixed with sliding block 16, and second spring 17 is mounted on sliding block 16 and sets
On the slide bar 16-1 set；The connecting rod 6 is mounted on crank 12 and sliding block 16.
As shown in Figure 1, the iris diaphgram component includes blade fixed disk 25, blade driver plate 24 and blade 26；Institute
The blade fixed disk 25 stated is equipped with third pin shaft 25-1 and annular groove, and blade driver plate 24 is mounted in blade fixed disk 25 and sets
In the annular groove set, blade driver plate 24 is equipped with third straight-line groove 24-1 and the second pin shaft 24-2, and the first pin shaft 15-1 is located at
In the third straight-line groove 24-1 being arranged on blade driver plate 24, blade 26 is mounted on blade driver plate 24, on blade 26
Equipped with the 4th straight-line groove 26-1, the second pin shaft 24-2 being arranged on blade driver plate 24 is located in the 4th straight-line groove 26-1, fast gate flap
The quantity of piece 26 is 5, and material is high elastic modulus carbon fiber；The blade driver plate 24 can drive blade 26 around third pin
Axis 25-1 rotation is realized shutter opening and is closed.
Illustrate the working principle of the invention patent in conjunction with Fig. 1 to Fig. 5: the original state of shutter is as shown in Figure 1, motor 3 is disconnected
Electricity, motor delay and running mechanism reset under the effect of the first spring 1, in state as shown in Figures 2 and 4, the second driving 5, line
In in first straight line slot 8-2, block bead 27 is located in hemispherical groove 9-1；Actively fork 8 is in torsional spring in shutter movement trigger mechanism
20 effects are lower to be resetted and contacts with the second limited post 22-5, and shutter is in close state.
When shutter is exposed, motor 3 drives first pulley 2 to rotate with direction as shown in Figure 5, and first pulley 2 passes through
Second driving line 5 rotates second pulley 9 and third pulley 10 with direction as shown in Figure 5, and the first spring 1 drives line first
It is extended under the action of 4.Motor 3 is before turning to the circle number of setting, and block bead 27 is still in hemispherical groove 9-1, hereafter,
Block bead 27 on two driving lines 5 leaves hemispherical groove 9-1 and actively fork 8 is pushed to one-directionally rotate fixed angle, actively fork 8
It is limited by the first limited post 27-2, anti-dazzling screen 8-1 triggers optoelectronic switch 23 and generates signal；Pass through first gear 14~the 4th tooth
The decelerating effect of wheel 13, the rotation of crank 12 one enclose and keep sliding block 16 primary along second straight line slot 22-1 reciprocating motion by connecting rod 6,
Blade 26 moves back and forth primary, shutter realization single exposure movement under the driving of blade driver plate 24；Then motor 3 powers off,
Motor delay and running mechanism and actively fork 8 reset, and prepare exposure next time.
The above are a specific embodiment of the invention, but limitation of the present invention absolutely not, any in the scope of the present invention
The improvement or equivalence replacement inside done all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of aerial camera object lens center type mechanical shutter, which is characterized in that supported including bearing support (22) and setting
Second straight line slot (22-1), spring strut (22-2), the first limited post (22-3), first rotating shaft (22-4) on frame (22),
Two limited posts (22-5), the second shaft (22-6) and third shaft (22-7), installation motor delay on the bearing support (22)
Driving mechanism, shutter movement trigger mechanism and iris diaphgram component；
Motor delay and running mechanism includes the first spring (1) being mounted on spring strut (22-2), is mounted on motor (3)
On first pulley (2), motor (3), first driving line (4), second driving line (5), second pulley (9), third pulley (10)
With block bead (27), the second pulley (9) and third pulley (10) are affixed, and second pulley (9) is mounted on first rotating shaft (22-4)
On, it is provided in second pulley (9) hemispherical groove (9-1), the both ends of first driving line (4) are separately mounted to the first bullet
On spring (1) and third pulley (10), the both ends of second driving line (5) are separately mounted to first pulley (2) and second pulley
(9) on, second driving line (5) on be provided with block bead (27), motor delay and running mechanism in the initial state, block bead (27)
In hemispherical groove (9-1), after motor (3) driving first pulley (2) rotation sets fixing turn, block bead (27) leaves hemispherical
The groove position (9-1) simultaneously drives actively fork (8) to rotate；
The shutter movement trigger mechanism includes connecting rod (6), pawl (7), actively fork (8), ratchet (19), first gear
(14), second gear (21), third gear (11), the 4th gear (13), crank (12), blade driver plate push rod (15), sliding block
(16), second spring (17), baffle (18), torsional spring (20) and optoelectronic switch (23) are provided with shading on the actively fork (8)
Piece (8-1) and first straight line slot (8-2), actively fork (8) is mounted on third shaft (22-7) and the second driving line (5) passes through
First straight line slot (8-2), pawl (7) and torsional spring (20) are mounted on actively fork (8), the ratchet (19) and first gear
(14) affixed, second gear (21) and third gear (11) are affixed, and the 4th gear (13) and crank (12) are affixed, first gear
(14) it being mounted on third shaft (22-7) with the 4th gear (13), second gear (21) is mounted on the second shaft (22-6),
The optoelectronic switch (23) is mounted on the first limited post (22-3), first limited post (22-3) and the second limited post (22-
5) for the limit to actively fork (8), the sliding block (16) is mounted on second straight line slot (22-1) and by baffle (18)
Limit, sliding block (16) can move along a straight line along second straight line slot (22-1), and blade driver plate push rod (15) and sliding block (16) are solid
It connects, second spring (17) is mounted on sliding block (16), and the connecting rod (6) is mounted on crank (12) and sliding block (16)；
The iris diaphgram component includes blade fixed disk (25), blade driver plate (24) and blade (26), and the blade is solid
Annular groove is set on price fixing (25), and blade driver plate (24) is mounted in the annular groove being arranged on blade fixed disk (25), fastly
Gate flap piece (26) is mounted on blade driver plate (24).
2. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that the cunning
Slide bar (16-1) is set on block (16), second spring (17) is mounted on slide bar (16-1).
3. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that the leaf
Piece driver plate push rod (15) is equipped with the first pin shaft (15-1).
4. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that the leaf
Piece driver plate (24) is equipped with third straight-line groove (24-1) and the second pin shaft (24-2).
5. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that blade
(26) it is equipped with the 4th straight-line groove (26-1).
6. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that the first pin shaft
(15-1) is located in third straight-line groove (24-1), and the second pin shaft (24-2) is located in the 4th straight-line groove (26-1).
7. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that described is fast
The quantity of gate flap piece (26) is 5.
8. a kind of aerial camera according to claim 1 object lens center type mechanical shutter, which is characterized in that described is fast
The material of gate flap piece (26) is high elastic modulus carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910056801.2A CN109581783B (en) | 2019-01-22 | 2019-01-22 | Objective lens center type mechanical shutter for aerial camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910056801.2A CN109581783B (en) | 2019-01-22 | 2019-01-22 | Objective lens center type mechanical shutter for aerial camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109581783A true CN109581783A (en) | 2019-04-05 |
| CN109581783B CN109581783B (en) | 2021-03-30 |
Family
ID=65916943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910056801.2A Active CN109581783B (en) | 2019-01-22 | 2019-01-22 | Objective lens center type mechanical shutter for aerial camera |
Country Status (1)
| Country | Link |
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| CN (1) | CN109581783B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100629A (en) * | 1986-02-10 | 1987-10-14 | 哈金格企业有限公司 | The cocking mechanism of camera shutter |
| JPH07159854A (en) * | 1993-12-10 | 1995-06-23 | Copal Co Ltd | Shutter for camera |
| CN2257036Y (en) * | 1996-11-12 | 1997-06-25 | 北京银视野科技有限责任公司 | Double blade sliding electric shutter for multi-lens stereo camera |
| CN2337583Y (en) * | 1998-06-11 | 1999-09-08 | 力捷电脑股份有限公司 | Improved structure of iris diaphragm shifting for camera lens |
| US20060228109A1 (en) * | 2005-04-06 | 2006-10-12 | Va, Inc. | Bi-stable mechanical photographic shutter |
| CN101377604A (en) * | 2008-09-12 | 2009-03-04 | 北京空间机电研究所 | Area array CCD camera shutter |
| 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 |
| CN103309121A (en) * | 2013-06-24 | 2013-09-18 | 中国科学院长春光学精密机械与物理研究所 | Switching pawl type uniform reciprocating mechanism |
| CN106200208A (en) * | 2016-07-18 | 2016-12-07 | 中国科学院光电研究院 | A kind of full frame transfevent CCD camera between-lens shutter device |
| CN108254994A (en) * | 2018-03-29 | 2018-07-06 | 深圳市星河泉新材料有限公司五金配件分厂 | A kind of aperture self-regulation structure and adjusting method |
-
2019
- 2019-01-22 CN CN201910056801.2A patent/CN109581783B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100629A (en) * | 1986-02-10 | 1987-10-14 | 哈金格企业有限公司 | The cocking mechanism of camera shutter |
| JPH07159854A (en) * | 1993-12-10 | 1995-06-23 | Copal Co Ltd | Shutter for camera |
| CN2257036Y (en) * | 1996-11-12 | 1997-06-25 | 北京银视野科技有限责任公司 | Double blade sliding electric shutter for multi-lens stereo camera |
| CN2337583Y (en) * | 1998-06-11 | 1999-09-08 | 力捷电脑股份有限公司 | Improved structure of iris diaphragm shifting for camera lens |
| US20060228109A1 (en) * | 2005-04-06 | 2006-10-12 | Va, Inc. | Bi-stable mechanical photographic shutter |
| CN101377604A (en) * | 2008-09-12 | 2009-03-04 | 北京空间机电研究所 | Area array CCD camera shutter |
| 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 |
| CN103309121A (en) * | 2013-06-24 | 2013-09-18 | 中国科学院长春光学精密机械与物理研究所 | Switching pawl type uniform reciprocating mechanism |
| CN106200208A (en) * | 2016-07-18 | 2016-12-07 | 中国科学院光电研究院 | A kind of full frame transfevent CCD camera between-lens shutter device |
| CN108254994A (en) * | 2018-03-29 | 2018-07-06 | 深圳市星河泉新材料有限公司五金配件分厂 | A kind of aperture self-regulation structure and adjusting method |
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|---|---|
| CN109581783B (en) | 2021-03-30 |
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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: A central mechanical shutter for aerial cameras Effective date of registration: 20230724 Granted publication date: 20210330 Pledgee: Industrial and Commercial Bank of China Limited Changchun Southern Urban Economic Development Zone Branch Pledgor: Changguang Satellite Technology Co.,Ltd. Registration number: Y2023220000056 |
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