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Light beam scanning mechanism based on rotation double wedge lenses

A technology of beam scanning and wedge mirror, which is applied in optics, optical components, instruments, etc., can solve the problems of not being able to satisfy large-aperture scanning and the size of the optical wedge mirror cannot be enlarged, and achieve simple and reliable connection relationship and flexible and convenient shaft adjustment , small size effect

Active Publication Date: 2013-02-13
BEIHANG UNIV
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AI Technical Summary

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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  • Light beam scanning mechanism based on rotation double wedge lenses
  • Light beam scanning mechanism based on rotation double wedge lenses
  • Light beam scanning mechanism based on rotation double wedge lenses

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Embodiment Construction

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

[0029] The invention provides a beam scanning mechanism based on a rotating double wedge mirror, such as Picture 9 As shown, the beam scanning mechanism includes two sets of optical components, and the two sets of optical components have the same installation method. The structure of one optical component is taken as an example below. The optical assembly includes an optical wedge mirror 1, a frame 2, a large gear 3, a small gear 4, a motor 5, a bearing 6, a bracket 7 and an angle measuring code plate 8. The optical wedge mirror 1 is installed inside the frame 2, The mirror frame 2 is mounted on the bracket 7 through the bearing 6. The mirror frame 2 is cylindrical, and one end surface is equipped with an angle measuring code plate 8 for measuring the rotation speed of the wedge mirror 1, and the other end surface is equipped with a large gear 3. Used for gear trans...

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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 optomechanical mechanism that utilizes the relative rotation of a double wedge mirror to realize a large field of view scanning of a beam. Background technique [0002] The precise 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 support and driving system; according to the different optical elements used, it can be divided into a reflective beam scanning mechanism and a transmissive beam scanning mechanism. 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, and the scanning accuracy and scanning track stability are poor; the transmissive scanning m...

Claims

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Application Information

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IPC IPC(8): G02B26/10
Inventor 袁艳赵妍妍苏丽娟
Owner BEIHANG UNIV
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