Patent ID: 8693818
Filing Date: 2014-04-08
Classification: G02B

Abstract:
1. An optical processing device, comprising: a plurality of optical ports; at least two lenses having an adjustable magnification for receiving an optical beam received from any of the optical ports; a dispersion element for spatially dispersing the optical beam received from at least two lenses into a plurality of wavelength components; and an optical path conversion system for receiving the plurality of wavelength components and selectively directing at least one of the wavelength components to a prescribed one of the optical ports, said optical path conversion system including a digital micromirror device (DMD) from which at least one wavelength component is reflected at least twice before being directed to the prescribed optical port and a reflective element for receiving the reflected wavelength components from the DMD and directing them back onto the DMD, said magnification of the at least two lenses being adjustable to compensate for variations in spacing between the DMD and the reflecting element.