Patent ID: 11896303
Assignee: WAVESENSE ENGINEERING GMBH
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 8:
9. The optical apparatus according to claim 1, wherein the optical arrangement further comprises a light source, collimation optics and a linear polarizer for the light from the light source, a reflective polarizing beam splitter to direct the sample beam along a sample path, toward the sample,
the sample beam directed through a quarter wave plate toward the sample, a three dimensional translation stage configured to maintain the sample in the sample beam, such that the sample path after reflection from the sample includes the quarter wave plate, a first telescope arrangement, a second beam splitter located after the first telescope to separate the reference beam from the sample beam, followed by a second telescope arrangement with the pinhole filter placed at an intermediate focal plane of the first telescope for one of the beams produced by the second beam splitter, and the photodetector disposed at the back focal plane of the second telescope, said photodetector connected with the computing unit.