An objective lens-centered mechanical shutter for an aerial camera
An aerial camera, mechanical shutter technology, applied in the shutter, camera, optics and other directions, can solve the problem of short exposure time, and achieve the effect of short exposure time, easy control and adjustment
Active Publication Date: 2021-03-30
CHANGGUANG SATELLITE TECH CO LTD
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
For the motor-driven central shutter, the motor directly drives the blade dial to rotate, and the blades are opened and closed through the positive and negative rotation of the motor. Since the start-up and reversing time of the motor under the rated voltage need to be more than 10ms, it is difficult to achieve a shorter exposure time. , therefore, it is of great significance to develop a motor-driven central shutter that can achieve short exposure time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] Below in conjunction with accompanying drawing, the patent of the present invention is described in further detail.
[0025] Such as figure 1 As shown, an objective-centered mechanical shutter for an aerial camera includes: a support frame 22 and a second linear groove 22-1 arranged on the support frame 22, a spring support 22-2, a first limit post 22-3, The first rotating shaft 22-4, the second limit post 22-5, the second rotating shaft 22-6 and the third rotating shaft 22-7, the motor delay driving mechanism, the shutter movement triggering mechanism and the iris assembly;
[0026] Such as Figure 2 to Figure 5 As shown, the motor delay driving mechanism includes a first spring 1, a first pulley 2, a motor 3, a first drive line 4, a second drive line 5, a second pulley 9, a third pulley 10 and a retaining bead 27; The first spring 1 is installed on the spring support 22-2; the first pulley 2 is installed on the motor 3, the second pulley 9 is fixedly connected to t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an objective lens-centered mechanical shutter for an aerial camera, which belongs to the technical field of mechanical shutters. The shutter includes a supporting frame, a motor delay driving mechanism, a shutter movement trigger mechanism and an iris assembly, and the shutter movement trigger mechanism is composed of three transmission mechanisms of a ratchet wheel, a gear and a crank slider. The present invention uses the motor delay driving mechanism to realize the set number of rotations of the motor and then drives the active pendulum through the transmission device to reduce the impact caused by the excessively long start-up time of the motor; the active pendulum in the shutter movement trigger mechanism can rotate in one direction To achieve one exposure action, the motor does not need to commutate. The structure form of the central mechanical shutter in the present invention can reduce the influence brought by the start-up and commutation time of the motor, and can realize a shorter exposure time and the exposure time is easy to adjust.
Description
technical field [0001] The invention belongs to the technical field of mechanical shutters, in particular to an objective lens-centered mechanical shutter for aerial cameras. Background technique [0002] The mechanical shutter is a time control mechanism that enables the photosensitive element of the camera to obtain a suitable exposure; Appropriate exposure. The aerial measurement camera is installed on the UAV. Due to the high speed of the UAV, image motion will cause blurring and smearing of the image captured by the camera. In order to reduce the impact of image motion on imaging, it is necessary to control the exposure time of the shutter at a reasonable In the range. For the motor-driven central shutter, the motor directly drives the blade dial to rotate, and the blades are opened and closed through the positive and negative rotation of the motor. Since the start-up and reversing time of the motor under the rated voltage need to be more than 10ms, it is difficult to...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G03B9/22
CPCG03B9/22
Inventor 张弘治贾学志宋可心李季丛杉珊
Owner CHANGGUANG SATELLITE TECH CO LTD