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Off-axis paraboloid off-axis amount measurement device and method

An off-axis paraboloid, measuring device technology, applied in measuring devices, optical devices, instruments, etc., to solve the measurement problems, the principle is simple, easy to operate

Active Publication Date: 2015-12-16
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0002] With the application requirements of space optical remote sensing technology, the traditional coaxial optical system can no longer meet the demand, and the off-axis optical system has begun to be widely used

Method used

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  • Off-axis paraboloid off-axis amount measurement device and method
  • Off-axis paraboloid off-axis amount measurement device and method
  • Off-axis paraboloid off-axis amount measurement device and method

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Embodiment Construction

[0022] The detection optical path of off-axis paraboloid is as follows figure 1 As shown, the interferometer emits a converging beam, the beam converging point coincides with the focus of the parabola, the beam is reflected by the off-axis parabola, enters the self-collimating plane mirror, and returns to the interferometer through the original path of the self-collimating plane mirror.

[0023] The off-axis amount is defined as the distance from the center of the clear aperture of the off-axis parabolic surface to the optical axis of the parabolic mother mirror.

[0024] Off-axis paraboloid off-axis measurement method of the present invention comprises the following steps:

[0025] 1 Build an off-axis parabolic detection optical path. The test optical path includes converging light interferometers, self-collimating plane mirrors and other detection equipment. The detection optical path is as follows: figure 1 As shown, the beam converging point coincides with the focus of th...

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Abstract

The invention discloses an off-axis paraboloid off-axis amount measurement device and a method. The device comprises a converging light interferometer, a parallel light interferometer, an auto-collimating plane mirror, a flange plate and a marker for visible band high absorption. The principle of light linear propagation is used, the clear aperture geometrical center and the focal point of the off-axis paraboloid mirror are projected to the auto-collimating plane mirror and are marked respectively, and through measuring the marker distance, the off-axis amount of the off-axis paraboloid mirror is measured. The device and the method of the invention have the advantages that the principle is simple, operation is easy, and the off-axis paraboloid off-axis amount measurement problem can be solved.

Description

technical field [0001] The invention belongs to the processing and detection technology of optical elements, and specifically refers to a measuring device and method for the off-axis quantity of an off-axis parabola, which is used for the inspection before the mirror coating of the off-axis parabola in the mirror processing process. technical background [0002] With the application requirements of space optical remote sensing technology, the traditional coaxial optical system can no longer meet the demand, and the off-axis optical system has begun to be widely used. Subsequently, the processing and inspection of off-axis optical components is a necessary step in the development of off-axis optical systems. The off-axis amount is a unique geometric parameter of off-axis optical components, which is different from other geometric parameters of traditional coaxial optical components. . The invention discloses a method for detecting the off-axis amount of an off-axis parabolic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
Inventor 于清华孙胜利
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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