Patent ID: 7834302
Filing Date: 2010-11-16
Classification: G01S

Abstract:
1. A laser safety device, comprising: a housing having first and second apertures; a beam splitter optically coupled to the first aperture and configured to divide radiation entering the housing through the first aperture into a first part and a second part; a photodetector optically coupled to the second part of the radiation and configured to detect a level of the second part of the radiation; a control circuit coupled to an output of the photodetector and configured to generate a control signal based upon the level of the second part of the radiation detected by the photodetector; and a reflector array optically coupled to the first part of the radiation and configured to selectively divert the first part of the radiation away from an optical path extending from the first aperture to the second aperture or allow the first part of the radiation to continue along the optical path towards the second aperture in response to the control signal, wherein the beam splitter is configured such that the optical coupling of the photodetector to the second part of the radiation is unchanged when the reflector array diverts the first part of the radiation from the optical path.