Patent ID: 8447079

Claim:
A linearly polarized light imaging device, comprising an incident arm, a detection arm, a sample stage, and an image processing computer, wherein the incident arm comprises a light source and a first polarizing element, and is disposed on one side of the sample stage, incident polarized light of a certain polarization angle passing through the first polarizing element; the detection arm comprises a second polarizing element and a photoelectric detector, and is disposed on a light-detection path on the same or the other side of the sample stage, said photoelectric detector detecting linearly polarized light with certain polarization angles reflected or scattered by or transmitted through a sample on the sample stage, that is, detected polarized light; an output terminal of the photoelectric detector is connected to a corresponding input terminal of the computer; and wherein the imaging device further comprises a polarization angle adjusting device for adjusting polarization angles of the incident polarized light from the first polarizing element and of the detected polarized light from the second polarizing element to obtain a series of polarized images, each image corresponding to an incident polarization angle and a detected polarization angle, wherein the computer processes all the obtained polarized images to obtain information of the sample to be detected through following steps: S 2 ) selecting two images from the obtained polarized images, wherein the two images have the same incident polarization angle, and a difference between detected polarization angles of the two images is 90°; S 3 ) subtracting the image with a smaller detected polarization angle from the image with a larger detected polarization angle, so as to obtain a polarization-difference image at the incident polarization angle; S 4 ) determining whether all the images have been processed or not; S 5 ) if yes, obtaining a series of polarization-difference images corresponding to different incident polarization angles; S 6 ) taking values of all the polarization-difference images at the same pixel; S 7 ) fitting a functional relation of polarization differences to incident polarization angles and detected polarization angles, and extracting three particular parameters from the functional relation; S 8 ) determining whether all pixels have been processed or not; and S 9 ) if yes, using the three particular parameters extracted at each pixel as values of three color components of the pixel, so as to generate a pseudo-color image.