HYPERSPECTRAL IMAGING SYSTEM, MONOLITHIC SPECTROMETER AND METHODS FOR MANUFACTURING THE MONOLITHIC SPECTROMETER

摘要

A hyperspectral imaging system, a monolithic Offner spectrometer, and two methods for manufacturing the monolithic Offner spectrometer are described herein. In one embodiment, the monolithic Offner spectrometer 102 comprises a transmissive material 101 which has: (1) an entrance surface which has an opaque material applied thereto, where the opaque material has a portion removed therefrom which forms a slit 108; (2) a first surface which has a first reflective coating applied thereto to form a first mirror 114; (3) a second surface which has a second reflective coating applied thereto to form a diffraction grating 120; (4) a third surface which has a third reflective coating applied thereto to form a second mirror 124; and (5) an exit surface 130. Optionally, the transmissive material may also have a fourth surface 111' which has a fourth reflective coating applied thereto to form a first fold mirror 105'. Furthermore, the transmissive material may also have a fifth surfacel44" which has a fifth reflective coating applied thereto to form a second fold mirror 140".