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Rotary leading-in mechanism for spatial light filter

A technology of rotary drive mechanism and optical filter, which is applied in the direction of instruments, optics, optical components, etc., can solve the problem that the life and reliability of the rotary dynamic sealing structure cannot meet the requirements of space use, and achieve the goal of eliminating the risk of oil leakage and high reliability , to avoid the effect of contaminating silicone oil

Active Publication Date: 2021-08-27
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the service life and reliability of the rotary dynamic sealing structure in the prior art cannot meet the requirements of space use, the present invention provides a long-life and high-reliability rotary introduction mechanism for space filters

Method used

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  • Rotary leading-in mechanism for spatial light filter
  • Rotary leading-in mechanism for spatial light filter
  • Rotary leading-in mechanism for spatial light filter

Examples

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-2 As shown, this embodiment provides a rotation introduction mechanism for a spatial filter, the rotation introduction mechanism includes an input drive shaft 2 , a swing guide head 3 , a bellows 4 , and a curved driven shaft 13 .

[0022] The spatial filter includes a crystal chamber 6, and the crystal chamber 6 is filled with silicon oil through the upper opening of the crystal chamber 6 and then sealed. A crystal 7 is arranged in the crystal chamber 6 , and an optical element 8 is arranged on the lower part of the crystal 7 , specifically several optical glass lenses in this embodiment, which also includes a layer of achromatic wave plate 9 . A large bevel gear 10 is mounted on the side of the optical element 8 via a rolling bearing 15 . A through hole is provided on the side wall of the crystal chamber 6 corresponding to the large ...

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Abstract

The invention discloses a rotary lead-in mechanism for a spatial light filter. The rotary lead-in mechanism comprises an input end driving shaft, a swing guide head, a corrugated pipe and a bent driven shaft; one end of the input end driving shaft is connected with a rotary driving mechanism, the other end of the input end driving shaft is connected with one end of the swing guide head; the inner side of the other end of the swing guide head is connected with one end of the bent driven shaft; the outer side of the other end of the swing guide head is fixedly connected with one end of the corrugated pipe; the other end of the bent driven shaft is provided with a bevel pinion; the outer side of the bent driven shaft is sleeved with an output end shell; one end of the output end shell is fixedly connected with the other end of the corrugated pipe; the other end of the output end shell is fixedly installed on a crystal chamber; and the swing guide head, the corrugated pipe and the output end shell form a sealed space filled with silicone oil. The reliability of the rotary leading-in mechanism for the spatial light filter of the invention is high; an end face sealing structure is adopted on the premise of ensuring a motion transmission function, and therefore, an oil leakage risk caused by rotary dynamic sealing is completely eradicated, and friction of a sealing ring and pollution of internal vacuum lubricating grease to the silicone oil can be avoided.

Description

technical field [0001] The invention relates to a rotary introduction mechanism, in particular to a rotary sealing device suitable for a space filter in a vacuum environment. Background technique [0002] As the terminal equipment of the solar magnetic field telescope, the birefringent filter is a narrow-band filter device for measuring the specific wavelength spectrum of sunlight. It is used to obtain the monochromatic image of the sun and is widely used in the measurement of the solar magnetic field. [0003] The optical filter needs to have a stable transmission band, and the achromatic wave plate is driven by the motor-driven bevel gear set to realize the on-orbit wavelength calibration of the optical filter and keep the position of the optical filter transmission band stable at a specific wavelength. Since the optical components of the birefringence filter are all immersed in silicone oil, in order to realize the above functions, extremely high requirements are put forw...

Claims

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Application Information

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IPC IPC(8): G02B7/00
CPCG02B7/006
Inventor 章海鹰孙泽宁
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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