Patent ID: 9052232
Filing Date: 2015-06-09
Classification: G01J,G01N

Abstract:
1. A spectrometer, comprising: a housing having a reflective inner surface comprising a section of a spheroid bounding a cavity; an illumination unit which directs a converging non-laser light polychromatic light beam, the converging non-laser light polychromatic light beam having a cross-sectional area vertical to a plane of the converging non-laser light polychromatic light beam in the cavity, through a port in the housing to a focal point inside the cavity mid-way between the reflective inner surface and the port in the housing where the light beam enters the cavity, such that the beam undergoes multiple reflections on the inner surface before exiting the cavity, the illumination unit further adapted to vary the vertical cross-sectional area of the beam at the port in the housing where the beam enters the cavity; and a detector to receive light which has exited the cavity.