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Large-view field high-resolution spectrometer optical system design method

A high-resolution, optical design technology, applied in the field of optical equipment, can solve the problems of increasing the mass, volume and cost of the spectrometer, and achieve the effect of increasing the number of optical fibers, reducing the development cost, and increasing the field of view

Inactive Publication Date: 2017-07-07
YUNNAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Problems solved by technology

[0003] To sum up, the existing problems in the prior art are: the existing imaging spectrometer relies on increasing the field of view to improve work efficiency, which leads to an increase in the quality, volume and cost of the spectrometer

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the design method of the optical system of the large-field-of-view high-resolution spectrometer provided by the embodiment of the present invention includes the following steps:

[0023] S101: Calculate the slit width and the number of pixels it occupies on the CCD according to the scientific target of the spectrometer, and then obtain the grating parameters through it and the resolution requirement of the spectrometer.

[0024] S102: According to th...

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Abstract

The invention belongs to the technical field of optical equipment, and discloses a large-view field high-resolution spectrometer optical system design method. The method comprises steps: multiple sections of slits and corresponding field lenses are adopted, and a different field lens carries out reflection and imaging on a sectional slit to a different CCD; light emitted by the slit is collimated through a collimation system and shines on a dispersion element, and spectral dispersion is carried out through the dispersion element; and grating diffraction light after dispersion performs imaging through the collimation system, spatial dislocation exists between the image surface after imaging and the slit of the spectrometer, a field lens is added at the image surface, and an image on a focal plane is imaged on the CCD through the imaging system. The dispersion functions of multiple spectrometers are realized, simultaneous data acquisition by multiple detectors in one spectrometer can be realized, the view field is increased, and the research cost and the space layout cost of multiple spectrometers can be reduced.

Description

technical field [0001] The invention belongs to the technical field of optical equipment, and in particular relates to a design method for an optical system of a large-field-of-view high-resolution spectrometer. Background technique [0002] A spectrometer is an optical instrument that can divide mixed light into spectra according to different wavelengths. It can obtain the spectral information of the target, which provides a better basis for analyzing and judging the properties of the target. From the early spectrometers that used the dispersion effect of prisms to achieve spectrometry, they have developed to grating spectrometers that are commonly used in recent years. With the development of spectrometers, increasing the field of view can improve the working efficiency of imaging spectrometers. Large field of view and wide coverage are the development trend of next-generation imaging spectrometers. Especially with the rapid development of astronomy in recent years, the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/427G01J3/42G01J3/22G01J3/04G01N21/31G01N21/01
CPCG01J3/04G01J3/22G01J3/2823G01J3/42G01J3/427G01J2003/045G01J2003/2826G01J2003/425G01N21/01G01N21/31G01N2021/0112
Inventor 钟悦常亮屈中权
Owner YUNNAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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