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W-type common-path time modulation interference spectrum imaging device and method

A technology of interferometric spectral imaging and time modulation, applied in the optical field, can solve problems such as poor stability, and achieve the effects of strong anti-interference ability, low stray light, and high flux

Active Publication Date: 2022-07-12
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem of poor stability of the time-modulated interference spectrum imaging device in the prior art by providing a W-type common optical path time-modulated interference spectrum imaging device and method

Method used

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  • W-type common-path time modulation interference spectrum imaging device and method
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  • W-type common-path time modulation interference spectrum imaging device and method

Examples

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Embodiment 1

[0044] Embodiment 1 provides a W-type common optical path time modulation interference spectroscopy imaging device, see figure 1 , figure 2 , including: a W-type common optical path interferometer, a pre-assembly 108 , a convergence assembly, a detection and acquisition module and a signal processing module 114 .

[0045] Wherein, the W-type common optical path interferometer includes a beam splitter 101 , a first plane mirror 102 , a first corner mirror 103 , a second corner mirror 104 , and a first optical path adjustment component (including a first prism 105 ) and a second optical path adjustment assembly (including a second prism 106 and a motor 107, the motor 107 drives the second prism 106 to rotate). That is, both the first reflecting element and the second reflecting element are corner reflectors.

[0046] The front assembly 108 includes a condensing lens 1081, a diaphragm 1082 and a collimating lens 1083 which are arranged in sequence along the optical path. The ...

Embodiment 2

[0071] Embodiment 2 provides a W-type common optical path time modulation interference spectroscopy imaging method, which is implemented by using a W-type common optical path time modulation interference spectroscopy imaging device provided in Embodiment 1, and the W-type common optical path interferometer is set to a common optical path and Asymmetric structure, by arranging a moving mirror scanning mechanism in the W-type common optical path interferometer for generating a time-varying optical path difference, the working mode of the W-type common optical path time modulation interference spectroscopy imaging device is time Modulation working mode.

[0072] A specific method corresponding to the apparatus of Embodiment 1 is provided below.

[0073] A W-type common optical path time modulation interference spectroscopy imaging method, see figure 2 , including the following steps:

[0074] Step 1. The target light becomes parallel light after passing through the front assem...

Embodiment 3

[0083] Embodiment 3 provides a W-type common optical path time modulation interference spectroscopy imaging device, which is different from Embodiment 1 in that the first reflection element and the second reflection element are both flat reflection mirrors.

[0084] Specifically, see image 3 , Figure 4 , Embodiment 3 provides a W-type common optical path time modulation interference spectroscopy imaging device including a W-type common optical path interferometer, a pre-assembly 208 , a convergence assembly, a detection and acquisition module and a signal processing module 214 .

[0085] The W-type common optical path interferometer includes a beam splitter 201 , a first plane mirror 202 , a second plane mirror 203 , a third plane mirror 204 , and a first optical path adjustment component (including a first prism 205 ) and a second optical path adjustment assembly (including a second prism 206 and a motor 207 ). The front assembly 208 includes a condensing lens 2081 , a di...

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Abstract

The invention belongs to the technical field of optics, and discloses a W-type common-optical-path time modulation interference spectrum imaging device and a W-type common-optical-path time modulation interference spectrum imaging method. The W-type common-optical-path interferometer adopts a common-optical-path design and is of an asymmetric structure, and the working mode of the W-type common-optical-path time modulation interference spectrum imaging device is a time modulation working mode by arranging a moving mirror scanning mechanism used for generating an optical path difference changing along with time in the W-type common-optical-path interferometer. The invention provides a brand new W-type common-path interference light splitting mode and a time modulation type interference spectrum imaging technology, so that the time modulation interference spectrum imaging device not only can overcome the problem of poor stability, but also can maintain the original advantages.

Description

technical field [0001] The invention belongs to the technical field of optics, and more particularly, relates to a W-type common optical path time modulation interference spectrum imaging device and method. Background technique [0002] Interference spectroscopy (imaging) technology is based on the principle of interferometric spectroscopy, and is an important type of technology in optical detection technology and spectroscopy (imaging) technology. There are three main types of interference spectroscopy (imaging) techniques that have emerged: one is a temporal modulation type (dynamic) based on a Michelson interferometer; one is a spatial modulation type (static) based on a transverse shear interferometer; the other is the same It is a spatiotemporal joint modulation type (static) based on a transverse shear interferometer. [0003] Among them, the time-modulated interference spectrometer (imaging) instrument generates spectral information by Fourier transform of the obtain...

Claims

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Application Information

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IPC IPC(8): G01J3/28G01J3/45G01J3/02G01J3/06
CPCG01J3/2823G01J3/45G01J3/0208G01J3/0205G01J3/0291G01J3/06
Inventor 龚威魏儒义赵江南吴琼水马昕田猛雷俊锋
Owner WUHAN UNIV
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