Apparatus for analyzing light having at least one wavelength, the apparatus comprising: (a) a light deflector for deflecting the light so as to provide a deflected light beam characterized by at least one wavelength-dependent angle, respectively corresponding to the at least one wavelength of the light;...http://www.google.com.au/patents/US20060126067?utm_source=gb-gplus-sharePatent US20060126067 - Crystal grating apparatus
