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CN-122016662-A - Mueller matrix imaging system and imaging method

CN122016662ACN 122016662 ACN122016662 ACN 122016662ACN-122016662-A

Abstract

The application is suitable for the imaging technical field, and provides a Mueller matrix imaging system and an imaging method, wherein the Mueller matrix imaging system comprises a first linear polarization module, a second linear polarization module, a third linear polarization module, a circular polarization module, a light collecting lens, a spectroscope, a first RGB polarization camera, a second RGB polarization camera and a signal processing unit; the spectroscope is divided into a first optical path of a first stage and a second optical path of the first stage, the first RGB polarization camera collects optical signals of the first optical path of the first stage, the second RGB polarization camera collects optical signals of the second optical path of the first stage, the signal processing unit controls the circularly polarized light module to emit circularly polarized light based on the optical signals of the first optical path of the first stage and the optical signals of the second optical path of the first stage, and the mueller matrix imaging of the sample is generated based on full stokes imaging data of different linearly polarized lights and full stokes imaging data of the circularly polarized light. The application can improve the generation efficiency of the Mueller matrix imaging.

Inventors

  • YUN TIANLIANG

Assignees

  • 苏州孚影科技有限公司

Dates

Publication Date
20260512
Application Date
20260225

Claims (10)

  1. 1. The Mueller matrix imaging system is characterized by comprising a first linear polarized light module, a second linear polarized light module, a third linear polarized light module, a circular polarized light module, a light collecting lens, a spectroscope, a first RGB polarization camera, a second RGB polarization camera and a signal processing unit; the first linearly polarized light module emits a first beam of linearly polarized light, the second linearly polarized light module emits a second beam of linearly polarized light, and the third linearly polarized light module emits a third beam of linearly polarized light; the light collecting lens couples the first linearly polarized light, the second linearly polarized light and the third linearly polarized light into a beam of composite polarized light, the beam of composite polarized light irradiates a sample, the sample generates a first optical signal, a second optical signal and a third optical signal, and the first optical signal, the second optical signal and the third optical signal are incident to the spectroscope; The spectroscope divides the first optical signal, the second optical signal and the third optical signal into a first optical path of a first stage and a second optical path of the first stage; The first RGB polarization camera collects light signals of a first light path of a first stage, and the second RGB polarization camera collects light signals of a second light path of the first stage; The signal processing unit controls the circular polarized light module to emit circular polarized light in a predefined mode based on the optical signals of the first optical path of the first stage and the optical signals of the second optical path of the first stage, and generates the Mueller matrix imaging of the sample based on the full Stokes imaging data corresponding to different linear polarized lights and the full Stokes imaging data corresponding to the circular polarized light.
  2. 2. The mueller matrix imaging system of claim 1, wherein a first linearly polarized light module emits a first beam of linearly polarized light, a second linearly polarized light module emits a second beam of linearly polarized light, and a third linearly polarized light module emits a third beam of linearly polarized light, comprising: The first linearly polarized light module emits first linearly polarized light, the first linearly polarized light is incident to the light collecting lens, the second linearly polarized light module emits second linearly polarized light, the second linearly polarized light is incident to the light collecting lens, the third linearly polarized light module emits third linearly polarized light, and the third linearly polarized light is incident to the light collecting lens.
  3. 3. The mueller matrix imaging system as recited in claim 1, wherein the beam splitter splits the first optical signal, the second optical signal, and the third optical signal into a first optical path of the first stage and a second optical path of the first stage, comprising: The spectroscope divides the first optical signal, the second optical signal and the third optical signal into a first optical path of a first stage and a second optical path of the first stage, the first optical path of the first stage is incident to the first RGB polarization camera after passing through the quarter wave plate, and the second optical path of the first stage is incident to the second RGB polarization camera.
  4. 4. The mueller matrix imaging system of claim 1, wherein the signal processing unit controls the circularly polarized light module to emit circularly polarized light in a predefined manner based on the optical signal of the first optical path of the first stage and the optical signal of the second optical path of the first stage, and generates the mueller matrix imaging of the sample based on the full stokes imaging data corresponding to the different linearly polarized light and the full stokes imaging data corresponding to the circularly polarized light, specifically: the signal processing unit processes the optical signals of the first optical path of the first stage and the optical signals of the second optical path of the first stage, generates full stokes imaging data corresponding to the first beam of linearly polarized light, full stokes imaging data corresponding to the second beam of linearly polarized light and full stokes imaging data corresponding to the third beam of linearly polarized light, sends a light source closing instruction to the first linearly polarized light module, the second linearly polarized light module and the third linearly polarized light module, and sends a light source opening instruction to the circularly polarized light module; The circularly polarized light module sends out circularly polarized light according to a light source starting instruction, and the circularly polarized light is incident to the light collecting lens; The light collecting lens irradiates circularly polarized light on a sample, and the sample generates a fourth light signal; The spectroscope divides the fourth optical signal into a first optical path of a second stage and a second optical path of the second stage, the first optical path of the second stage is incident to the first RGB polarization camera, and the second optical path of the second stage is incident to the second RGB polarization camera; the first RGB polarization camera collects light signals of a first light path of a second stage, and the second RGB polarization camera collects light signals of a second light path of the second stage; the signal processing unit processes the optical signal of the first optical path of the second stage and the optical signal of the second optical path of the second stage to generate full stokes imaging data corresponding to circularly polarized light, and the mueller matrix imaging of the sample is generated according to the full stokes imaging data corresponding to the first linearly polarized light, the full stokes imaging data corresponding to the second linearly polarized light, the full stokes imaging data corresponding to the third linearly polarized light and the full stokes imaging data corresponding to the circularly polarized light.
  5. 5. The mueller matrix imaging system of claim 1, wherein the collector lens is positioned on the light exit side of the first linearly polarized light module, the second linearly polarized light module, the third linearly polarized light module, and the circularly polarized light module.
  6. 6. The mueller matrix imaging system as recited in claim 1, wherein the beam splitter is located on the light exit side of the collector mirror.
  7. 7. The mueller matrix imaging system of claim 1, wherein the first RGB polarized camera and the second RGB polarized camera are positioned on the light exit side of the beam splitter.
  8. 8. The mueller matrix imaging system of claim 1, wherein the signal processing unit connects the first RGB polarized camera and the second RGB polarized camera.
  9. 9. The mueller matrix imaging system of claim 1, wherein, The first optical signal is an optical signal reflected by the sample under the irradiation of the first linearly polarized light; the second optical signal is an optical signal reflected by the sample under the irradiation of the second linearly polarized light; the third optical signal is an optical signal reflected by the sample under the irradiation of the third linearly polarized light; The fourth optical signal is the optical signal of the sample reflected under circularly polarized light illumination.
  10. 10. An imaging method based on the mueller matrix imaging system as claimed in claim 1, comprising: The signal processing unit packages the Mueller matrix imaging of the sample and the identification of the sample to generate imaging data of the sample; And reading preset uploading time, judging whether the current time is the uploading time, and uploading imaging data of the sample to a server if the current time is the uploading time.

Description

Mueller matrix imaging system and imaging method Technical Field The application belongs to the technical field of imaging, and particularly relates to a Mueller matrix imaging system and an imaging method. Background The traditional imaging mode can only reflect basic information such as the surface strength, the morphology and the like of a sample, and cannot show deep optical characteristics such as the microstructure difference, the polarization response and the like in the sample, while the Mueller matrix imaging can convert characteristics such as the microstructure, the optics and the like of the sample which are difficult to visually perceive into observable and analyzable imaging results through analysis and reconstruction of multi-dimensional polarization information, so that a user is helped to understand the physical characteristics and the optical principles of the sample more clearly. The traditional Mueller matrix measurement method is mainly divided into two main types of time-sharing measurement and channel-sharing measurement. The time-sharing measurement generally requires continuous rotation or switching of optical elements in the polarization generator and the polarization analyzer, and the principle of the method is simple, but the measurement speed is slow, which is unfavorable for improving the generation efficiency of the Mueller matrix imaging of the sample. Therefore, how to generate a mueller matrix image of a sample has become a technical problem to be solved. Disclosure of Invention The embodiment of the application aims to provide a Mueller matrix imaging system, which aims to solve the technical problem of how to generate Mueller matrix imaging of a sample. In a first aspect, an embodiment of the present application provides a mueller matrix imaging system, where the mueller matrix imaging system includes a first linear polarization module, a second linear polarization module, a third linear polarization module, a circular polarization module, a light collecting lens, a spectroscope, a first RGB polarization camera, a second RGB polarization camera, and a signal processing unit; the first linearly polarized light module emits a first beam of linearly polarized light, the second linearly polarized light module emits a second beam of linearly polarized light, and the third linearly polarized light module emits a third beam of linearly polarized light; the light collecting lens couples the first linearly polarized light, the second linearly polarized light and the third linearly polarized light into a beam of composite polarized light, the beam of composite polarized light irradiates a sample, the sample generates a first optical signal, a second optical signal and a third optical signal, and the first optical signal, the second optical signal and the third optical signal are incident to the spectroscope; The spectroscope divides the first optical signal, the second optical signal and the third optical signal into a first optical path of a first stage and a second optical path of the first stage; The first RGB polarization camera collects light signals of a first light path of a first stage, and the second RGB polarization camera collects light signals of a second light path of the first stage; The signal processing unit controls the circular polarized light module to emit circular polarized light in a predefined mode based on the optical signals of the first optical path of the first stage and the optical signals of the second optical path of the first stage, and generates the Mueller matrix imaging of the sample based on the full Stokes imaging data corresponding to different linear polarized lights and the full Stokes imaging data corresponding to the circular polarized light. In a possible implementation manner of the first aspect, the first linearly polarized light module emits a first beam of linearly polarized light, the second linearly polarized light module emits a second beam of linearly polarized light, and the third linearly polarized light module emits a third beam of linearly polarized light, including: The first linearly polarized light module emits first linearly polarized light, the first linearly polarized light is incident to the light collecting lens, the second linearly polarized light module emits second linearly polarized light, the second linearly polarized light is incident to the light collecting lens, the third linearly polarized light module emits third linearly polarized light, and the third linearly polarized light is incident to the light collecting lens. In a possible implementation manner of the first aspect, the beam splitter splits the first optical signal, the second optical signal, and the third optical signal into a first optical path of the first stage and a second optical path of the first stage, including: The spectroscope divides the first optical signal, the second optical signal and the third optical signal into a first optical path of