A Beam Scanning Mechanism Based on Rotating Double Wedge Mirror

A beam scanning and wedge mirror technology, applied in optics, optical components, instruments, etc., can solve the problems of inability to meet large-diameter scanning, the size of the optical wedge mirror cannot be enlarged, etc., to achieve simple and reliable connection relationship, flexible and convenient adjustment of the shaft system , the effect of small size

Active Publication Date: 2014-10-15
BEIHANG UNIV
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Problems solved by technology

Due to the limitation of the inner diameter of the hollow torque motor, the size of the optical wedge mirror of this kind of beam scanning mechanism cannot be enlarged, which cannot meet the needs of large-diameter scanning

Method used

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  • A Beam Scanning Mechanism Based on Rotating Double Wedge Mirror
  • A Beam Scanning Mechanism Based on Rotating Double Wedge Mirror
  • A Beam Scanning Mechanism Based on Rotating Double Wedge Mirror

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] The invention provides a beam scanning mechanism based on a rotating double wedge mirror, such as Figure 9 As shown, the light beam scanning mechanism includes two sets of optical components, and the two sets of optical components have the same installation method. The following uses one of the optical components as an example to illustrate its structure. The optical assembly includes an optical wedge mirror 1, a mirror frame 2, a large gear 3, a pinion gear 4, a motor 5, a bearing 6, a bracket 7 and an angle measuring code disc 8, and the optical wedge mirror 1 is installed inside the mirror frame 2, The picture frame 2 is installed on the support 7 through the bearing 6. The picture frame 2 is cylindrical, and an angle measuring code disc 8 is installed on one end surface to measure the rotation speed of the wedge mirror 1, and a large gear ...

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Abstract

The invention discloses a light beam scanning mechanism based on rotation double wedge lenses and belongs to the technical field of photoelectronic imaging probing technique. The light beam scanning mechanism comprises two sets of optical modules, wherein each set of optical module comprises an optical wedge lens, a lens frame, a big gear, a small gear, a motor, a bearing, a support and an angle measurement coded disc, the optical wedge lens is installed inside the lens frame which is installed on the support through the bearing, the lens frame is cylindrical, the angle measurement coded disc is installed on one lateral end face of the lens frame, the big gear is installed on the other lateral end face of the lens frame, and a gear shaft of the motor drives the big gear to rotate through the small gear to drive the optical wedge lens on the lens frame to rotate. The two optical wedge lenses perform drive rotation respectively to achieve light beam scanning. Rotation of the optical wedge lenses adopts single transmission driving, rotation control of the two wedge lenses has no mutual coupling influences, and movement speed and movement direction of the light beam scanning mechanism are not mutually interfered, and a multi-scanning mode can be achieved.

Description

technical field [0001] The invention belongs to the technical field of photoelectric imaging and detection, and relates to a precision optical-mechanical mechanism for realizing the scanning of a beam with a large field of view by using the relative rotation of a double-wedge mirror. Background technique [0002] The precision beam scanning mechanism is one of the key technologies in the field of photoelectric imaging detection technology. The precision beam scanning mechanism is mainly composed of scanning optical elements and their supports and driving systems; according to the different optical elements used, it can be divided into reflective beam scanning mechanisms and transmissive beam scanning mechanisms. The reflective beam scanning mechanism is based on the principle of light reflection, the scanning mechanism and the beam emitting or receiving system cannot be coaxial, the system is complex, the scanning accuracy and the stability of the scanning track are poor; th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10
Inventor 袁艳赵妍妍苏丽娟
Owner BEIHANG UNIV
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