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Objective lens center type mechanical shutter for aerial camera

A technology for aerial cameras and mechanical shutters, applied in shutters, cameras, optics, etc., can solve problems such as short exposure time, and achieve short exposure time, easy control and adjustment

Active Publication Date: 2019-04-05
CHANGGUANG SATELLITE TECH CO LTD
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  • 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

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  • Objective lens center type mechanical shutter for aerial camera
  • Objective lens center type mechanical shutter for aerial camera
  • Objective lens center type mechanical shutter for aerial camera

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Experimental program
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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...

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Abstract

The invention provides an objective lens center type mechanical shutter for an aerial camera, and belongs to the technical field of mechanical shutters. The shutter comprises a support frame, a motordelay driving mechanism, a shutter motion triggering mechanism and an iris diaphragm assembly, wherein the shutter motion triggering mechanism is composed of three transmission mechanisms: a ratchet,a gear and a crank slider. The shutter realizes that the active swing lever is driven by the transmission device after the motor rotates for a set number of turns through the motor delay driving mechanism, which reduces the influence of the long starting time of the motor; and once exposure can be realized by unidirectionally rotating the active swing lever in the shutter motion triggering mechanism, without reversing the motor. The central mechanical shutter structure in the invention can reduce the influence brought by starting and commutation times of the motor, and can enable shorter exposure time and easy adjustment of the exposure time.

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

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Application Information

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Patent Type & Authority Applications(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