Patent ID: 11971307
Assignee: BEIJING RSLASEROPTO-ELECTRONICS TECHNOLOGY CO. LTD
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The device according to claim 1, wherein the second optical path assembly further comprises: a light homogenizing sheet, a field diaphragm, a collimating mirror, a second convergent mirror and an imaging apparatus arranged in sequence along the laser wavelength measurement optical path, wherein,
the light homogenizing sheet is correspondingly arranged after the first optical path assembly in the laser wavelength measurement optical path, and configured to further homogenize the laser beam passing through the first optical path assembly and being incident on the second optical path assembly;
the field diaphragm is configured to control an imaging range of the laser beam homogenized by the light homogenizing sheet in the hierarchical imaging;
the collimating mirror is correspondingly arranged before the FP etalon assembly in the laser wavelength measurement optical path, and configured to ensure a collimating characteristic of the laser beam incident on the FP etalon assembly;
the second convergent mirror is arranged after the optical classifier in the laser wavelength measurement optical path, and configured to converge the laser beam passing through the optical classifier to the imaging apparatus; and
the imaging apparatus is configured to image the laser beam passing through the second convergent mirror.