Patent ID: 9217668
Filing Date: 2015-12-22
Classification: G01J,Y10T

Abstract:
1. A miniature spectrometer, comprising: an input port configured to receive an optical signal; a waveguide device in which the optical signal is transmitted; an image capture unit; a miniature diffraction grating configured to separate the optical signal into a plurality of spectral components that are projected onto the image capture unit; and a grating accommodation slot, provided by the waveguide device and disposed between the input port and the image capture unit, configured to receive the miniature diffraction grating; a cushion disposed above the miniature diffraction grating such that the miniature diffraction grating and the cushion are disposed in the grating accommodation slot; wherein the waveguide device comprises a first waveguide plate and a second waveguide plate, the second waveguide plate having an opening such that the grating accommodation slot is formed by the opening and a waveguide surface of the first waveguide plate, and wherein the miniature diffraction grating is disposed on the waveguide surface of the first waveguide plate and abutting two adjacent edges of the opening of the second waveguide plate.