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A Collimated Light Source Applicable to Space Camera Angle Monitoring

A collimated light source and space camera technology, which is applied in the field of aerospace optical remote sensors, can solve the problems of using reference light sources in the space on-orbit environment, and achieve the effect of low power consumption and small size

Active Publication Date: 2021-04-13
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, collimated light sources are mainly used in the fields of projectors, liquid crystal displays, laser pointers, and large-aperture optical detection. There is no reference light source specifically for aerospace on-orbit environments. Considering that the accuracy of reference transmission reaches sub-second level, It is very important and urgent to study light sources that can be used for camera angle monitoring

Method used

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  • A Collimated Light Source Applicable to Space Camera Angle Monitoring
  • A Collimated Light Source Applicable to Space Camera Angle Monitoring
  • A Collimated Light Source Applicable to Space Camera Angle Monitoring

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Embodiment Construction

[0019] like figure 1 , 2 Shown in , 3 is the composition diagram and the optical system diagram of the collimated laser light source of the present invention, namely the basic form of the present invention. It is composed of LD laser diode components, converging lens components, adapter frame 13, collimation components and corresponding fasteners. The diode assembly is composed of LD laser diode 1, diode sleeve 2, diode circuit board 3, diode circuit board fastener 4, flexible PCB board 5, connector 6, diode assembly structure frame 7, and the converging lens assembly consists of a converging lens reference seat 8 , Converging lens pressing ring 9, converging lens 10; Fasteners include 11, 12, 16.

[0020] like figure 1 As shown, the LD laser diode assembly and the converging lens assembly are connected by fasteners 11 (three groups uniformly distributed in the circumferential direction), and the converging lens assembly and the adapter frame are connected by fasteners 12 ...

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Abstract

A collimated light source that can be used for monitoring the included angle of a space camera is composed of an LD laser diode component, a converging lens component, an adapter frame, a collimating component, and the like. The LD laser diode provides a divergent light source, the converging lens assembly converges the divergent light, and the collimator assembly completes the collimation of the laser beam. The invention adopts low-expansion invar material and zero-expansion glass-ceramic as the main support structure of the optical system, which improves the adaptability of the collimated laser light source to the external thermal environment. The invention has the characteristics of low power consumption, small volume, high stability, etc., and can be used as a measurement light source for high-precision angle monitoring between aerospace optical remote sensing cameras.

Description

technical field [0001] The invention belongs to the technical field of aerospace optical remote sensors, and relates to a collimated light source that can be used for monitoring the included angle of space cameras. Background technique [0002] Aerospace surveying and mapping is an important direction in the field of aerospace optical remote sensing. In order to meet the requirements of surveying and mapping without control points, high-resolution surveying and mapping cameras and high-precision star cameras are necessary payload configurations. However, due to the influence of the ground gravity environment and the on-orbit thermal environment, the angle between the high-precision star camera and the high-resolution surveying and mapping camera has a systematic periodic change, which makes the transfer process of the star camera attitude to the high-resolution planning camera inevitable. The large system error is brought about, and even after the ground calibration, it stil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/30G01C1/00
CPCG01C1/00G02B27/30
Inventor 王伟之高卫军段维宏王妍孙世君宗云花高凌雁付强强贾永丹于艳波
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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