Patent ID: 6943337
Filing Date: 2005-09-13
Classification: G01S,G01V,G02B

Abstract:
1. A method for monitoring a region of interest, the method comprising: (i) transmitting incident radiation towards the region of interest with a certain transmitting angle to define a plane of propagation of the incident radiation, and with a predetermined angular intensity distribution, I(θ), of the incident radiation, the region of interest being located within said plane; (ii) collecting reflections of the incident radiation with a solid angle of collection intersecting with said plane, a region of intersection being a detecting window of a predetermined geometry containing at least a portion of said region of interest; detecting the collected radiation coming from within said detecting window utilizing a detector having a sensing surface configured with a predetermined geometry and with a spatially variable sensitivity within this surface selected in accordance with the geometry of the detecting window and the angular intensity distribution of the incident radiation; and generating output signals indicative of the detected radiation.