2results about How to "Good polarization properties" patented technology

The purpose of this disclosure is to provide a polarization-sensitive optical coherence tomography apparatus capable of obtaining tomographic images that better reflect the polarization characteristics of a sample. This disclosure is a polarization-sensitive optical coherence tomography apparatus that obtains a signal representing the polarization characteristics of the sample from the interference light between the reflected light of a measurement light illuminating the sample and a reference light used for reference. The apparatus includes two collimators for the reference light arranged opposite each other on the optical path of the reference light, and the optical path length of the reference light is adjusted using these collimators.

The utility model relates to gem processing detection technical field more specifically, relate to a gem cutting and grinding process three -dimensional dynamic optical detection module, including mounting bracket, the mounting bracket includes upper roof, left side board, lower bottom plate and right side board, the upper roof, left side board, lower bottom plate and right side board combine and form the rectangular structure, wherein the middle part of upper roof is provided with fixed hole, the middle part of lower bottom plate is open, the right side and left side of lower bottom plate are provided with first off -axis parabolic mirror and second off -axis parabolic mirror respectively, the upside of first off -axis parabolic mirror and second off -axis parabolic mirror is provided with semiconductor laser and acquisition camera respectively. First off -axis parabolic mirror focuses laser to gem surface, second off -axis parabolic mirror captures the laser signal of gem surface reflection, and reflects it to acquisition camera, realizes the dynamic focusing of curved surface gem detection without aberration, and this detection mode adopts non -contact detection, avoids the damage of gem surface.