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Large-aperture off-axis catadioptric multichannel optical system adjustment method

A technology of optical system and adjustment method, applied in optics, optical components, instruments, etc., to achieve the effect of reducing time cost and economic cost, reducing cost, and ensuring the accuracy of adjustment and adjustment

Active Publication Date: 2020-01-31
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a large-diameter off-axis catadioptric multi-channel optical system installation and adjustment method. Through the reverse installation and adjustment method, no compensator is needed, and the large-diameter off-axis paraboloid is solved. The problem of the main mirror type adjustment

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[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0015] A large-aperture off-axis catadioptric multi-channel optical system installation and adjustment method, the optical system includes: such as figure 1 As shown, a planar laser interferometer 1, a large-diameter off-axis parabolic reflector 2, an off-axis relay reflector 3, a dichroic mirror 4, a beam splitter 5, multiple imaging lenses and multiple detectors, the assembly method includes Follow the steps below:

[0016] Step 1: The planar laser interferometer 1 emits collimated light incident into the curved surface of the large-diameter off-axis parabolic mirror 2, and reflects it to the standard concave set at the real focus of the large-diameter off-axis parabolic mirror 2 On the spherical mirror, the plane laser interferometer 1 and the standard concave spherical mirror perform self-collimation interference detection on the large-di...

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Abstract

The invention, which relates to the field of high-precision large-aperture multichannel optical system adjustment, discloses a large-aperture off-axis catadioptric multichannel optical system adjustment method. With a reverse adjustment method, a problem of large-aperture off-axis paraboloid main mirror surface type adjustment is solved without a compensator. Therefore, the adjustment and detection efficiency of the large-aperture off-axis catadioptric multi-channel optical system are improved and the cost is lowered. Adjustment and detection from an optical element to an optical system can berealized by establishing a primary reference; a large-aperture off-axis reflector can be adjusted and follow-up light paths can be adjusted in sequence. Optical index detection of the imaging qualityand the field of view of the detector can be carried out after adjustment completion in the whole system. reference transmission and additional detection tool design are not needed in the adjustmentand detection process, so that the optical adjustment efficiency is greatly improved; and the time cost and the economic cost in the system building process are reduced while the adjustment precisionis ensured.

Description

technical field [0001] The invention relates to the field of high-precision large-diameter multi-channel optical system installation and adjustment, in particular to a large-diameter off-axis catadioptric multi-channel optical system installation and adjustment method. Background technique [0002] As the aperture of the optical system increases, the functional requirements of the optical system also increase. It is usually realized by the common-aperture multi-channel spectral splitting technology, especially in the fields of astronomical observation, laser communication, laser ranging, lidar and biomedical imaging, etc., which have been widely used. At present, the main system part of the common optical path of the large-aperture off-axis optical system is reflective, which is widely used because it is not affected by chromatic aberration, has no central obstruction and can guarantee the ability to receive optical information and energy to the greatest extent. Most of the...

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Application Information

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IPC IPC(8): G02B27/62
CPCG02B27/62
Inventor 吕天宇王建立李洪文范磊
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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