A design method for a direct-view wide-spectrum co-optical axis linear spectrometer
By adopting the direct-view wide spectral common-axis linear spectrometer design method in the dispersion spectrometer, the secondary dispersion characteristics of the prism and the flash transmission grating are used to solve the problems of dispersion nonlinearity and assembly and debugging difficulties, and linear separation and efficient debugging of the spectral imaging system are achieved.
CN115165099BActive Publication Date: 2025-03-18ZHONGBEI UNIV
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Patent Information
- Application Number
- CN202210790976.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-05
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2042-07-05
AI Technical Summary
Technical Problem
Dispersion spectrometers have problems such as nonlinear dispersion and difficulty in assembly and commissioning.
Method used
The direct-view wide spectrum common-axis linear spectrometer design method is adopted. The PPG structure spectrometer composed of prism and flash transmission grating is used to compensate for the dispersion nonlinearity of the spectral imaging system, and the direct-view common-axis optical path design is designed to reduce the debugging difficulty.
Benefits of technology
Linear separation of the spectral imaging system is realized, spectral nonlinearity is improved, assembly and debugging is reduced, and spectral imaging quality is improved.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to a direct-view wide-spectrum co-optical axis linear spectrometer design method, and belongs to the field of spectrometer design. The present invention proposes a direct-view wide-spectrum co-optical axis linear spectrometer design method, which adopts a prism pair and a blazed transmission grating to form a PPG structure spectrometer module, and utilizes the secondary dispersion characteristics of the prism and blazed transmission grating combination to achieve the compensation of the dispersion nonlinearity of the spectral imaging system while increasing the system's spectral detection range. The spectrometer system adopts a direct-view co-optical axis optical path design, so that the centers of the telescope system and the spectral imaging system are on the same optical axis, ensuring that the center wavelength light is vertically incident on the telescope system and vertically outgoing from the focusing imaging lens to the photodetector. The above-mentioned co-optical axis optical path design not only improves the spectral nonlinearity but also reduces the difficulty of debugging.
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