A spectrometer for measuring the intensity of light, comprises a grating having a major axis, a first entrance aperture aligned with the grating major axis and configured to direct light energy onto the grating, wherein the grating is adapted to produce a focused light beam, a first exit aperture aligned...http://www.google.com.au/patents/US6954271?utm_source=gb-gplus-sharePatent US6954271 - System and method for multiplexing inputs into a single spectrometer
