Small-deformation ultraspeed photographic instrument tilting mirror
An ultra-high-speed, photographic camera technology, applied in the field of rotating mirrors, can solve the problems of large mirror deformation, achieve the effects of reducing mirror deformation, reducing production costs, and improving imaging quality
Inactive Publication Date: 2009-04-29
SHENZHEN UNIV
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a rotating mirror of an ultra-high-speed camera with a greatly reduced deformation in view of the defect that the aluminum alloy rotating mirror of the existing ultra-high-speed camera has a large amount of mirror deformation during high-speed operation.
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[0019] Such as figure 1 As shown, in the preferred embodiment of the small-deformation ultra-high-speed camera rotating mirror of the present invention, a mirror body 1 and a rotating shaft matched with the mirror body 1 are included. The mirror body 1 is installed in the dark box of the ultra-high-speed camera through a rotating shaft, and is driven to rotate by the rotating shaft. The recording light of the camera irradiates the mirror surface 5 and is directly reflected onto the recording medium. When the rotating shaft drives the mirror body to rotate at a high speed, the mirror surface 5 of the mirror body is deformed, and the amount of deformation increases as the rotating speed increases. There are various ways to cooperate the rotating shaft and the mirror body. In this preferred embodiment, the preferred embodiment is an interference fit method in which the rotating shaft passes through the shaft hole 2 provided in the center of the mirror body.
[0020] The mirror ...
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The invention relates to a tilting mirror of the little deforming hyperspeed photographic instrument that comprises mirror body and revolution axis, the mirror body is regular triangular prism, several via holes which are parallel to the central rotation are opened on said mirror body. The local density of the further part to rotation in the mirror body is decreased just by opening several via holes which are parallel to the central rotation, the deformation of the mirror surface is decreased, and the imaging quality of the hyperspeed photographic instrument is improved. The deformation of the mirror surface of the tilting mirror made of aluminum alloy can achieve the level of traditional beryllium tilting mirror, it changes the bias of technicist in the fields that limit speed of the tilting mirror can be increased just by replacing material, the manufacturing cost of the whole apparatus is decreased, and the further development of the hyperspeed photographic instrument is accelerated.
Description
technical field [0001] The invention relates to an ultra-high-speed camera, more specifically, to a rotating mirror with smaller deformation of the mirror surface when the camera operates at an ultra-high speed. Background technique [0002] The speed range of the rotating mirror in the ultra-high-speed camera is generally 15 to 120×10 4 At such a high speed, the mirror surface will have a certain amount of deformation, which will directly lead to serious deterioration of the imaging surface. Therefore, metal beryllium is generally used to make rotating mirrors in scanning cameras. The physical properties of the beryllium rotating mirror in high-speed operation determine that the mirror deformation is small and has little impact on the image quality of optical imaging, but the metal beryllium is expensive, the material resources are scarce, and it is toxic. Aluminum alloy rotating mirrors are cheap and harmless to people and the environment, so aluminum alloy rotating mirr...
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IPC IPC(8): G03B17/02G03B39/00
Inventor 黄虹宾李景镇龚向东何铁锋
Owner SHENZHEN UNIV