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

Claim 10:
11. The optical apparatus according to claim 1, wherein the optical arrangement further comprises a light source, collimation optics and a linear polarized for the light from the light source, a reflective polarizing beam splitter to direct the sample beam along a sample path,
the sample beam directed through a quarter wave plate, a mirror to reflect the sample beam, such that the sample path after reflection from the mirror includes the quarter wave plate, a first telescope arrangement, a second beam splitter located after the first telescope to separate a 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 the reference beam produced by the second beam splitter and a support for placing a transmissive sample in the sample beam at the intermediate focal plane of the first telescope, and the photodetector disposed at the back focal plane of the second telescope, said photodetector connected with the computing unit.