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A design method of off-axis co-body three-mirror optical system based on four-link

A technology of optical system and design method, which is applied in optics, optical components, instruments, etc., and can solve problems such as difficult installation and adjustment of off-axis optical component systems

Active Publication Date: 2021-05-11
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

However, the processing of off-axis optical components and system assembly and adjustment are more difficult, and the processing accuracy of components and the method of system assembly and adjustment are the key factors restricting its further development

Method used

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  • A design method of off-axis co-body three-mirror optical system based on four-link
  • A design method of off-axis co-body three-mirror optical system based on four-link
  • A design method of off-axis co-body three-mirror optical system based on four-link

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Embodiment Construction

[0033] Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, in the present embodiment, four-bar linkage mechanism such as figure 1 As shown, connecting rod 1, connecting rod 2, connecting rod 3 and connecting rod 4 are connected by hinge points A, B, C, and D. A method for designing an off-axis co-body three-mirror optical system based on four-linkage rods, the specific steps are as follows:

[0034] Step 1: Establish a global coordinate system O 0 -XYZ, take the center point O of the light source surface 0 is the origin, the positive direction of the X-axis is horizontal to the right, the positive direction of the Y-axis is horizontal upward, and the Z-axis is determined according to the right-hand rule;

[0035] Step 2: According to the size requirements of the optical system, establish the center point O of the light source surface in the off-axis communal three-mirror optical system 0 with the first mirror ...

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Abstract

The invention discloses a design method of an off-axis co-body three-mirror optical system based on four connecting rods, belonging to the technical field of optical design. This method applies the four-link theory in mechanical design to the design of an off-axis three-mirror optical system. First establish the global coordinate system, and determine the distance between the chief ray between the light source surface and the first reflector, between the first reflector and the second reflector, and between the second reflector and the third reflector in the off-axis communal three-mirror optical system Propagation path; determine the normal of the three mirrors, and keep the normal of the third mirror unchanged; change the incident direction of the incident light to obtain the dynamic pose of the mirror in the off-axis common three-mirror optical system when the incident direction is different ; Based on the planar four-bar linkage mechanism, the present invention establishes a relationship between the rotation of the connecting rod and the position and posture of the mirror, so as to open up new opportunities for the integration of design and manufacture, and fundamentally solve the problems of shape control, position control, and controllability of advanced optical systems. way.

Description

technical field [0001] The invention relates to the technical field of optical design, in particular to a design method of an off-axis co-body three-mirror optical system based on four links. Background technique [0002] With the rapid advancement of science and technology, space optical remote sensing and aerospace technologies such as rockets, satellites, and space stations, the scope of human activities has expanded from the surface of the earth to outer space. The improvement of aerospace technology has effectively promoted the economic and social development of various countries. At the same time, the requirements for various design and processing technical indicators of the optical system are getting higher and higher, and aerospace technology is mainly developing towards high resolution, large field of view, and wide coverage. [0003] The off-axis three-mirror optical system in the reflective optical system can meet the above requirements of high resolution, large f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00
CPCG02B27/0012
Inventor 程同蕾陈晓雨李曙光闫欣张学楠王方
Owner NORTHEASTERN UNIV LIAONING
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