Calibration lamp system for astronomical observation spectrometer

An astronomical observation and calibration lamp technology, applied in the field of calibration lamp systems, can solve the problems of large occupied space and long switching time, and achieve the effect of simplifying the structure, uniform light source and saving adjustment time

Active Publication Date: 2017-04-12
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method generally takes a long time to switch and takes up a lot of space

Method used

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  • Calibration lamp system for astronomical observation spectrometer
  • Calibration lamp system for astronomical observation spectrometer
  • Calibration lamp system for astronomical observation spectrometer

Examples

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Embodiment 1

[0013] Embodiment 1, for the calibration lamp system of astronomical observation spectrometer, refer to figure 1 , Figure 2a-Figure 2c : on the optical axis of the white light source 1, a color temperature filter 2, a half-mirror 3, a first group of lenses 4,5, a frosted glass 6 and a second group of lenses 7,8 are arranged in sequence, On the vertical optical axis of the half mirror 3, there is a thorium-argon lamp 10; in the figure, 9 is the incident end of the optical fiber, and 11 is the light box / guide rail. The white light source 1 and the thorium-argon lamp light source 10 are conjugate-coupled to the half-mirror 3; The distance is equal. The half mirror 3 can have two forms, one is to coat the plane mirror as a whole with a transflective film by means of optical coating, so that half of the light from the white light source and the thorium-argon lamp source are emitted to the mirror through the half mirror. on the lens. The other is to coat the center of the flat ...

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Abstract

The invention provides a calibration lamp system for an astroobservation spectrometer. The system is characterized in that the structure of the system is as follows: a color temperature filter, a semi-transparent semi-reflection mirror, a first group of lenses, a piece of frosted glass, and a second group of lenses are successively arranged at an optical axis of a white-light lamp source. A thorium-argon hollow cathode lamp is arranged at a vertical optical axis of the semi-transparent semi-reflection mirror. A distance between the filament of the white-light lamp and the semi-transparent semi-reflection mirror is equal to a distance between the filament of the thorium-argon hollow cathode lamp and the semi-transparent semi-reflection mirror. The first group of lenses are coupled with the second group of lenses by a focal point. According to the calibration lamp system provided by the invention, two kinds of light sources are coupled to one output point perfectly; and the system is essential to the astroobservation spectrometer. When the system is in use, the light source switching becomes convenient; the light source is uniform; and the intensities of the two groups of light are equal. A box body is used as an adjusting guide rail, thereby substantially simplifying the structure. The adjusting time and the manufacturing cost are saved.

Description

technical field [0001] The invention relates to a calibration system, in particular to a calibration lamp system for an astronomical observation spectrometer. Background technique [0002] Spectral observation is an important means of observation in modern astronomy, and various spectrometers have almost become standard equipment for optical and infrared telescopes. In order to accurately measure the Doppler frequency shift of the spectrum, a spectral calibration system is required for high-precision astronomical spectral observations. Therefore, various calibration systems are equipped on astronomical spectrometers. Generally, the widely used calibration light source is a thorium-argon lamp, and the flat-field light source is an ordinary white light lamp. When the spectrometer obtains the calibration light source, it is necessary to spread the two light sources evenly at the light source input end of the spectrometer (usually the incident end of the optical fiber) as accu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28
Inventor 陈忆陈红汤振季杭馨许明明胡中文王磊
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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