Patent ID: 6233373
Filing Date: 2001-05-15
Classification: G01J,G02B

Abstract:
An optical spectrometer for detecting a spectral signature of an input optical signal, comprising:a collimating lens having an optical axis and a focal plane, for collimating said input optical signal, and for focusing a dispersed signal into a line in said focal plane;an input optical system, for directing said input optical signal from an axial point source to said collimating lens;a diffraction grating, for chromatically dispersing said collimated input optical signal, positioned in the path, of collimated light from said collimating lens, oriented to return a majority of said dispersed light through said collimating lens; anda detector array, in said focal plane of, and nearly axial to, said collimating lens, wherein said collimating lens, said input optical system, said diffraction grating and said detector array are mechanically static, and wherein said detector array simultaneously integrates all of said input optical signals over the wavelength range of interest.