Composite type beam coarse and fine coupling scanning device

A coarse-fine coupling and scanning device technology, applied in the field of precision optical scanning, can solve the problems of complicated transmission process, reduced control accuracy, small scanning field of view, etc., and achieves the effects of high control accuracy, simple mechanical structure, and good real-time performance.

Active Publication Date: 2017-02-15
TONGJI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

This mechanism converts the small-angle swing of the prism into a large-distance movement of the slider, which reduces the requirements for control accuracy, but the transmission process is relatively complicated, and it is not suitable for applications such as real-time tracking.
[0013] The common

Method used

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  • Composite type beam coarse and fine coupling scanning device
  • Composite type beam coarse and fine coupling scanning device
  • Composite type beam coarse and fine coupling scanning device

Examples

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Embodiment 1

[0053] see Figure 11 , this embodiment is a set of double-prism coarse-fine coupling scanning device, which is used to realize coarse-fine coupling scanning of laser beam in a large range. like Figure 11 As shown, this embodiment mainly includes a base 33 , a laser bracket 34 , a laser 35 , a first prism assembly 36 and a second prism assembly 37 . Wherein, the first prism assembly 36 and the second prism assembly 37 are completely the same, and both are the single wedge prism coarse-fine coupling scanning device according to the present invention. The first prism assembly 36 and the second prism assembly 37 are installed on the base 33 , the laser bracket 34 is installed on the base 33 , and the laser 35 is installed on the top of the laser bracket 34 . In this embodiment, the central axis of the laser 35, the optical axis of the first prism assembly 36 and the optical axis of the second prism assembly 37 are on the same straight line. In this embodiment, both the first ...

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PUM

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Abstract

The invention relates to a composite type beam coarse and fine coupling scanning device which comprises a base, a spring, a middle lens frame, an inner lens frame, a wedge prism, a large bearing end cover, a rotary encoder rotor, a rotary encoder stator, an outer lens frame, a large bearing retainer ring, a large bearing, a nylon pad, a wedge retainer ring, a threaded pressing ring, a prism tightening screw, a torque motor stator, a torque motor rotor, a voice coil motor rotor, a push rod, a voice coil motor stator, a push groove, a third nylon pad, a small bearing, a small bearing end cover, a half shaft, and a small rotary encoder assembly. Through the rotation of the wedge prism, the beam large range coarse scanning is realized, through the deflection of the wedge prism, the beam local range high precision scanning is realized. One set of the device or multiple sets of the devices can be used together, the scanning range of the beam can be increased further when the multiple sets of the devices are used, the rich scanning styles are realized, and the device has extensive prospect in the application fields with high requirements of a beam scanning range and precision such as photoelectric imaging detection, free space laser communication, and dynamic target laser tracking.

Description

technical field [0001] The invention relates to an optical scanning device, in particular to a composite beam coarse-fine coupling scanning device, which can be used for high-precision beam scanning, tracking and alignment in the field of precision engineering, and belongs to the field of precision optical scanning. Background technique [0002] Precision optical scanning device is one of the key technologies in the fields of photoelectric imaging detection, free space laser communication, and dynamic target laser tracking. The optical scanning device with the refractive wedge prism as the core optical element has the advantages of compact structure, small moment of inertia, good dynamic performance, etc., and has a wide range of applications in the above-mentioned fields. There are two types of common wedge prism optical scanning devices: rotating double prism scanning device and tilting double prism scanning device. The rotating double prism scanning device uses a pair of...

Claims

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Application Information

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IPC IPC(8): G02B26/10
CPCG02B26/108
Inventor 李安虎易万力
Owner TONGJI UNIV
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