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A synchronous scanning rotating double prism device and one-dimensional scanning method thereof

A technology of synchronous scanning and scanning method, which is applied in the field of one-dimensional synchronous scanning rotating double prism device, can solve the problems of large volume and weight, complex calculation, low reliability, etc., achieve high precision and reliability, reduce the number of control quantities, The effect of small cost

Active Publication Date: 2022-02-08
武汉华中天经通视科技有限公司
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Problems solved by technology

[0006] Aiming at the disadvantages of high cost, large volume and weight, low reliability, and complex solution caused by the independent control of the two prisms in the existing electronically controlled rotating double prism, the present invention realizes the synchronization of the two prisms by adding a mechanical synchronization structure. Reverse constant amplitude rotation, can control the beam pointing to scan in one-dimensional direction

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  • A synchronous scanning rotating double prism device and one-dimensional scanning method thereof
  • A synchronous scanning rotating double prism device and one-dimensional scanning method thereof
  • A synchronous scanning rotating double prism device and one-dimensional scanning method thereof

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] Working principle of rotating biprism and calculation of beam pointing

[0034] The rotating double prism consists of a pair of refracting prisms arranged coaxially adjacent to each other. By adjusting the respective rotation angles of the first wedge prism 2 and the second wedge prism 3, the spatial direction of the outgoing beam can be changed arbitrarily within a certain range of deflection angles. figure 1 Depicts the working principle of the beam pointing control of the rotating biprism.

[0035] Calculating the mathematical relationship between the spatial orientation of the incident and outgoing beams and the rotation angle of the two prisms is the basic premise for the application of the rotating double prism. The mathematical relationship is divided into two levels: "forward problem" and "reverse problem". The forward problem is to solve the...

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Abstract

The invention discloses a one-dimensional synchronous scanning rotating double prism device and a one-dimensional scanning method. The transmission and synchronization of two prisms are realized through four symmetrical and evenly distributed conical gears fixedly installed on the shaft system, so as to achieve synchronous reverse and equal amplitude. The purpose of rotation; in scanning mode, in order to eliminate the impact of backlash on accuracy, the two prisms are controlled to rotate continuously in only one direction, and the outgoing beam scans back and forth in one-dimensional direction, and the scanning time is modulated by controlling the time characteristic of the prism rotation angle θ Features: The present invention can realize the drive and position feedback of two wedge prisms with only one motor and one angle sensor, reducing the number of motors and angle sensors, and only one voltage control value and angle feedback value, with a simple positive direction And reverse analytical solution, solution and control are simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of beam pointing and scanning control, and in particular relates to a one-dimensional synchronous scanning rotating double prism device and a one-dimensional scanning method thereof. Background technique [0002] At present, there are mainly three control methods for beam scanning: gimbal type, fast mirror type, and rotating double prism type. [0003] Among them, the rotating double prism adjusts the beam or sight axis pointing through the coaxial independent rotation of the two prisms. Compared with the traditional gimbal type, it has the advantages of high precision, compact structure, and good dynamic performance. The rotating double prism beam pointing control system has been developed. Become a useful supplement to traditional gimbals. [0004] The rotating double prism beam pointing control system is composed of a pair of coaxial adjacent refracting prisms. The top angles and materials of the two pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10G01B11/26
CPCG02B26/108G01B11/26
Inventor 余永朝左小涛
Owner 武汉华中天经通视科技有限公司
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