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High-precision installation and adjustment method for total-reflection off-axis collimating optical system

A technology of collimating optics and adjustment methods, applied in optics, optical components, installation, etc., can solve problems such as angle control and space reference establishment, difficulties, and repeated iterations in the adjustment process

Inactive Publication Date: 2019-03-01
BEIJING INST OF REMOTE SENSING EQUIP
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-precision assembly and adjustment method for a fully inverted off-axis collimation optical system, which solves the problem of the spatial positioning, angle control and establishment of a spatial reference of the mirror due to the eccentricity and inclination of the fully inverted off-axis optical system. Difficult, the problem of repeated iterations in the assembly and adjustment process

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  • High-precision installation and adjustment method for total-reflection off-axis collimating optical system
  • High-precision installation and adjustment method for total-reflection off-axis collimating optical system
  • High-precision installation and adjustment method for total-reflection off-axis collimating optical system

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Embodiment Construction

[0028] The specific steps of a high-precision adjustment method for a fully inverted off-axis collimation optical system are as follows:

[0029] The first step is the establishment of optical reference and tilt transformation

[0030] First, use a height gauge to determine the center height of the optical axis, and unify the center heights of all mirrors; if the primary mirror 4 is tilted by 0.4°, the subsequent secondary mirror 3 and third mirror 2 are all tilted by 0.4°. In order to ensure the unity of the mechanical axis and the optical axis of the system, and that the outgoing beam is incident on the instrument under test along the mechanical axis, after the horizontal optical reference is established, the standard flat mirror 6 is reversely rotated by 0.4° to compensate for the tilt of the field of view of the whole machine.

[0031] The second step is the installation and calibration of the primary mirror 4

[0032] The installation and calibration of the main mirror 4...

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Abstract

A high-precision installation and adjustment method for a total-reflection off-axis collimating optical system comprises firstly establishing an optical reference plane by using an auto-collimation detection optical path; secondly, detecting a primary mirror independently by using an Offner detection optical path; thirdly, installing and adjusting a secondary mirror by using an intermediate imageplane in combination with primary mirror detection; fourthly, performing joint adjustment by using a third mirror and the secondary mirror, and measuring the parallelism of the emitted light by usinga pentagonal prism method; and finally, installing a folded-in plane mirror and a roll-out plane mirror in the optical system. The method solves the problem that because of the eccentricity and tilt of the total-reflection off-axis optical system, it is very difficult in spatial positioning, angle control and spatial reference establishment of a reflector, and the installation and adjustment process has to be repeatedly iterated.

Description

technical field [0001] The invention relates to an optical system installation and adjustment method, in particular to a high-precision installation and adjustment method for a fully inverted off-axis collimation optical system. Background technique [0002] Infrared collimation optical systems mostly use transmissive optical systems. Although the field of view can be relatively large, the aperture is limited by the technological level of infrared materials, and chromatic aberration is difficult to correct. In addition, single-chip off-axis parabolic optical systems are also commonly used for infrared collimation. The optical system is limited by the small number of components, the difficulty of aberration correction, and the difficulty of achieving a large field of view. The full reflection off-axis optical system, through the spatial off-axis design of three mirrors, takes into account the large field of view and long focal length, and at the same time does not introduce c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/182
CPCG02B7/182
Inventor 许敏达李娟王庆丰武晓阳李昂熊健
Owner BEIJING INST OF REMOTE SENSING EQUIP
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