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Dual mode switching system and switching method for space coronagraph

A technology for switching systems and coronagraphs, applied in the field of space coronagraphs, can solve problems such as incompatibility of switching systems, and achieve the effects of eliminating motion gaps, reducing performance impact, and reducing costs

Active Publication Date: 2021-08-13
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Claims
  • Application Information

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Problems solved by technology

However, this device is not compatible with the switching system of space coronagraphs

Method used

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  • Dual mode switching system and switching method for space coronagraph
  • Dual mode switching system and switching method for space coronagraph

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Embodiment Construction

[0031] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0032] like figure 1 , figure 2 The dual-mode switching system of the space coronagraph shown is used to switch between the self-calibration mode and the observation mode of the space coronagraph. The dual-mode switching system includes a self-calibrating light source switching device, an optical path switching device and a positioning device. The wavelength division multiplexer 1 in the self-calibrating light source switching device couples output fibers of multiple self-calibrating light sources into one optical fiber for beam output. This optical fiber introduces the calibration light source into the optical path of the space coronagraph through the optical fiber connector 5 . Multiple self-calibration light sources are switched on and off (when one self-calibration light source is turned on,...

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Abstract

The invention relates to the field of space coronagraphs, in particular to a dual-mode switching system and a switching method for space coronagraphs. The switching system includes a self-calibrating light source switching device, an optical path switching device and a positioning device. In the self-calibrating light source switching device, a plurality of self-calibrating light sources are connected to a wavelength division multiplexer through an optical fiber, and the wavelength division multiplexer is connected to an optical fiber connector. In the optical path switching device, the motor is connected to the worm, the worm and the worm gear shaft are installed on the outer frame, the worm gear is installed on the worm gear shaft, the worm gear and the worm gear are meshed, the optical fiber fixing rod is installed on the locking end of the worm gear shaft, and the optical fiber connector is installed on the optical fiber fixing rod. The encoder is connected to the positioning end of the worm gear shaft. The switching method comprises that the encoder obtains angle position information; the worm gear shaft rotates to the position of the calibrated angle, and the optical path is calibrated; the worm gear shaft rotates to the zero position, and the starlight enters the space coronagraph. The invention provides a switching system with higher precision and reliability and smaller weight and volume by improving the structure.

Description

technical field [0001] The invention relates to the field of space coronagraphs, in particular to a dual-mode switching system and a switching method for space coronagraphs. Background technique [0002] The space coronagraph needs to self-calibrate the overall optical path before working, and accurately correct the high-order wave aberration of the system through high-precision wave aberration control technology. This mode is called self-calibration mode. After the self-calibration of the coronagraph is completed, the calibration light source needs to be moved out of the optical path, and at the same time, the starlight of the telescope is introduced into the optical path to enter the observation mode for scientific observation. When switching between the space coronagraph observation mode and the self-calibration mode, the optical path switching system of the space coronagraph observation starlight and the self-calibration mode in the prior art is bulky, and the switching ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/30G02B27/00
CPCG02B27/00G02B27/30
Inventor 许明明窦江培朱永田张熙赵刚郭晶戚永军
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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