Coarse and fine scanning rotating prism device

A prism, rough and fine technology, applied in optical components, optics, instruments, etc., can solve problems such as affecting the scanning accuracy of prisms, and achieve the effects of avoiding spatial structure dispersion, improving transmission accuracy, and improving dynamics and accuracy.

Inactive Publication Date: 2013-03-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, when designing the nested mechanism of prism rotation and yaw, the error transmission of the two-stage motion should be reduced as much as possible. On the basis of the rotation motion, the system adopts the implicated yaw method of three modules, and the More mechanical errors will accumulate, which will affect the accuracy of prism scanning

Method used

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  • Coarse and fine scanning rotating prism device
  • Coarse and fine scanning rotating prism device
  • Coarse and fine scanning rotating prism device

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Embodiment Construction

[0055] The composition of the prism compound motion mechanism and the process of realizing rough and fine scanning in the present invention will be further described in detail through the accompanying drawings, but the scope of protection of the patent of the present invention is not limited thereto.

[0056] See attached figure 2 , the prism and the inner and outer mirror frame assembly are driven by the worm 5 and installed on the rectangular frame 2, the rectangular frame 2 and the prism and the inner and outer mirror frame assembly are supported on the left section 8 of the yaw shaft and the right end 9 of the yaw shaft On the frame 3, the yaw movement is realized by the yaw motor 6.

[0057] See attached image 3 , the prism 1 is placed in the inner lens barrel 46, the wedge side of the prism 1 is connected to the wedge block 41 through the wedge side liner 43, and the plane side of the wedge block 41 is fixed by the wedge block ring 40; the plane side of the prism 1 T...

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Abstract

The invention relates to a coarse and fine scanning rotating prism device, which comprises a prism and an inner and outer prism frame assembly, a worm and gear movement mechanism, a rotary motor, a yaw motor and a rotating half shaft assembly, an anti-backlash motor and an anti-backlash gear assembly, a rotary encoder assembly, a deflection encoder assembly, a rectangular frame and a base, wherein the rotary motor drives the prism and the inner and outer prism frame assembly through the worm and gear mechanism to realize full circumferential rotation, and the yaw motor is directly coupled with the rectangular frame to realize the yaw movement of the prism and the inner and outer prism frame assembly; and the whole device is arranged on the base. The prism is driven by the worm and gear mechanism to realize the full circumferential large-range rotation, and the coarse scanning requirements of dynamic beams are met; and a rotary movement mechanism and a yaw movement mechanism are nested to be combined, so that the integration of coarse and fine scanning functions is skillfully realized in a single set of devices, and the problems that the dispersal spatial structure is brought by a coarse and fine scanning separation design and the coarse and fine error term of the system is difficult to separate and traceably amend are avoided.

Description

technical field [0001] The invention relates to an optical transmission system, in particular to a rotating prism device for realizing rough and fine two-stage scanning. Background technique [0002] Refractive prism scanning mechanism has a wide range of uses in dynamic optical tracking, which can accurately realize the alignment of optical paths, tracking of measured objects, compensation and correction of beam pointing errors, etc. [0003] (1) The application and structural composition of the rotating prism scanning device are given in the following prior art. [0004] The prior art (Xiaodong Tao, etc., "Active optical system for variable view imaging of micro objects with emphasis on kinematic analysis", Applied Optics, 2008, 47(22):4121-4132, etc. series of articles) uses a rotating double prism Realize variable field of view imaging scanning of micro-objects; prior technology (Mario Tirabassi, etc., "Scanning LDV using wedge prisms", Optics and Lasers in Engineeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10
Inventor 李安虎
Owner TONGJI UNIV
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