The spectroscopy module 1 is provided with a body portion 2 for transmitting light L1, L2, a spectroscopic portion 3 for dispersing light L1 made incident from the front plane 2a of the body portion 2 into the body portion 2 to reflect the light on the front plane 2a, a light detecting element 4 having...http://www.google.es/patents/US8068223?utm_source=gb-gplus-sharePatente US8068223 - Spectroscopic module
