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A terahertz band off-axis three-mirror system and its installation method

A three-mirror, terahertz technology, applied in the direction of installation, optics, instruments, etc., can solve problems such as difficult problems, and achieve the effect of precise installation and adjustment

Inactive Publication Date: 2016-12-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

Therefore, for large-scale, short-wavelength terahertz off-axis three-mirror systems, high-precision alignment has become a difficult problem

Method used

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  • A terahertz band off-axis three-mirror system and its installation method
  • A terahertz band off-axis three-mirror system and its installation method
  • A terahertz band off-axis three-mirror system and its installation method

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Embodiment Construction

[0025] The present invention will be further introduced below in conjunction with the accompanying drawings and embodiments.

[0026] image 3 A schematic diagram of the off-axis three-mirror system in the terahertz band provided by the present invention, the off-axis three-mirror system in the terahertz band includes a measurement base, a primary mirror, a secondary mirror and three mirrors, and is characterized in that it also includes a The first measuring probe (7), the second measuring probe (8), the third measuring probe (9) on the base, and the first high-precision reference block (10) fixed on the side of the primary mirror, fixed on the side of the secondary mirror The second high-precision reference block (11) and the third high-precision reference block (12) fixed on the side of the three mirrors, the first measuring probe, the second measuring probe and the third measuring probe are all provided with distance sensors, The first measurement probe measures the posit...

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Abstract

The invention provides an off-axis three-mirror system in the terahertz band and an assembly method thereof, belonging to the technical field of off-axis reflection imaging optical systems. The terahertz band off-axis three-mirror system includes a measurement base, a primary mirror, a secondary mirror, and three mirrors, and is characterized in that it also includes a first measurement probe, a second measurement probe, and a third measurement probe arranged on the measurement base. The measuring probe, and the first high-precision reference block fixed on the side of the primary mirror, the second high-precision reference block fixed on the side of the secondary mirror and the third high-precision reference block fixed on the side of the third mirror, the first measuring probe, Both the second measuring probe and the third measuring probe are provided with a distance sensor, and the position, attitude and degree of freedom information of the first high-precision reference block, the second high-precision reference block and the third high-precision reference block are measured by the distance sensor, then The position, attitude and degree of freedom information of the primary mirror, secondary mirror and three mirrors can be obtained, so as to realize the precise adjustment of a large off-axis three-mirror system.

Description

technical field [0001] The invention belongs to the technical field of off-axis reflection imaging optical systems, and in particular relates to an off-axis three-mirror system in the terahertz band and an assembly method thereof. Background technique [0002] The off-axis three-mirror optical system has become an important part of the space remote sensing measurement system due to its advantages such as long focal length and large field of view, no central obscuration, high modulation transfer function, and strong ability to suppress stray light. Its structure is as figure 1 As shown, including the primary mirror (1), secondary mirror (2), triple mirror (3) and image plane (4), the installation quality of the off-axis three-mirror optical system is mainly determined by the mutual spatial position of the three mirrors, It is determined by the error between the attitude and the theoretical value. However, due to the complexity of its structure (each optical element has 6 de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/182G02B17/06
CPCG02B7/182G02B17/0626
Inventor 王超曾青梁莹林陈磊杨萍姜晶简贤唐辉
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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