Unlock instant, AI-driven research and patent intelligence for your innovation.

Snapshoting type grating spectrometer

A grating spectrometer and snapshot technology, which is applied in the field of spectroscopic instruments, can solve the problems of complex device processing, high cost, and the inability of snapshot grating spectrometers to simultaneously meet wide-spectrum measurement, high luminous flux and high resolution, and achieve high-bandwidth spectral measurement , cost-effective, size reduction effect

Active Publication Date: 2019-07-05
TIANJIN UNIV
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, snapshot grating spectrometers cannot meet the requirements of wide-spectrum measurement, high luminous flux and high resolution at the same time
Replacing the ordinary grating with a new type of dispersion element requires precise adjustment of the diffraction optical path, and the processing of the device is complicated and the cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Snapshoting type grating spectrometer
  • Snapshoting type grating spectrometer
  • Snapshoting type grating spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Adopt image slicer (21) as collimating mirror among the present embodiment, spherical mirror (41) is as imaging mirror, dispersion element is common plane blazed grating (31), and grating constant is 600lp / mm, and blaze angle is 10.37 °, detects The device is an area array CCD (51), and the system simulation structure diagram is as follows Figure 6 shown.

[0080] The number n of the spherical sub-mirrors of the image splitter is set to 5, and the wavelength range is 200-1000nm.

[0081] One method that can be used is to divide the wave band evenly, and divide the wavelength into five groups. 840nm), 920nm (840–1000nm).

[0082] attached Figure 5 shows how a composite blazed grating works, where i n is the incident angle, θ bn is the diffraction angle, θ Bn For the shining angle. In order to facilitate the reception of the detector, each sub-grating can have the same diffraction angle for the main light of the central wavelength of different bands, and the inci...

Embodiment 2

[0093] Present embodiment adopts image splitter (21) as collimating mirror, spherical mirror (41) as imaging mirror, dispersion element is composite blazed grating (32), grating constant is 600lp / mm, detector is area array CCD (51) , the system simulation structure diagram is as follows Figure 11 shown.

[0094] Set the number n of the spherical sub-mirrors of the image splitter to 5, for the wavelength range of 200-1000nm, the focal length of the image splitter and the imaging mirror are both 100mm, the incident slit is 20μm, and the chief ray targets the image splitter The two-dimensional deflection angle (δ x ,δ y ) is (0°, 7.5°), the incident angle of the chief ray to the composite blazed grating is 5°, and the main parameters of the designed optical path are shown in Table 2.

[0095] The main design parameters of the optical path of the second embodiment of Table 2

[0096] Band range Δλ 200–360nm 360–520nm 520–680nm 680–840nm 840–1000nm gr...

Embodiment 3

[0099] Present embodiment adopts as collimating mirror like splitter (21), like splitter (42) as imaging mirror, dispersion element is composite blazed grating (32), and grating constant is 600lp / mm, and detector is area array CCD (51), the system simulation structure diagram is attached Figure 13 shown.

[0100] Set the number n of spherical sub-mirrors of the image splitter to 5, for the wavelength range of 200-1000nm, the incident slit is 20μm, the sub-mirror of the image splitter is a spherical mirror with a focal length of 100mm, and the two-dimensional The deflection angle parameters are shown in Table 2.

[0101] The two-dimensional deflection angle parameter of image slicer in the third embodiment of table 3

[0102]

[0103] The spectral line diagram of embodiment three is attached Figure 14 As shown, only the center wavelength and two edge wavelengths of each band are used in the ZEMAX simulation, and each row from top to bottom represents 840–1000nm, 680–840...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of spectrometer technologies and provides a snapshoting type grating spectrometer. Under a condition that the area of the detector of the snapshoting type grating spectrometer of the invention and the area of a detector of a grating spectrometer in the prior art is the same, the snapshoting type grating spectrometer has the advantages of extended wavelength rangeof a spectrum analysis instrument, improved resolution, improved light energy utilization rate, good manufacturability and high cost performance under single exposure. According to the technical schemes of the invention, the snapshoting type grating spectrometer includes a light source, a collimating mirror, an optical grating, an imaging mirror and a detector, wherein the collimating mirror is an image splitter; the image splitter is composed of a plurality of spherical reflecting sub-mirrors arranged in an x direction, wherein the spherical reflecting sub-mirrors have two-dimensional deflection angles in the x direction and a y direction; the two-dimensional deflection angles can be adjusted, so that the angle of each set of outgoing parallel light can be adjusted; and the image splitter receives incident light emitted from the light source and outputs a plurality of sets of parallel light of different angles to the optical grating. The snapshoting type grating spectrometer of the invention is mainly applied to the design and manufacture conditions of spectroscopic instruments.

Description

technical field [0001] The invention relates to the technical field of spectroscopic instruments, in particular to a snapshot type grating spectrometer using an image slicer. Background technique [0002] Under the same detector size, improving the resolution, spectral range and diffraction efficiency simultaneously is the main goal pursued by the development of spectroscopic instruments. Conventional grating spectrometers use detectors to receive dispersion spectra in one-dimensional direction, and the resolution and spectral range of the obtained spectrograms are difficult to meet the measurement requirements at the same time. If a single blazed grating is used to cover a wide spectral range, the diffraction efficiency will inevitably be lost. In order to obtain a wide-band spectrum, the method of replacing multiple gratings or mechanical scanning is often used, which cannot meet the requirements of real-time measurement. [0003] Patent ZL98225262.5 proposes a spectrome...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01J3/28G01J3/18G01J3/02
CPCG01J3/0205G01J3/1804G01J3/2803G01J3/2823
Inventor 张尹馨杨怀栋张震坤
Owner TIANJIN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com