Patent ID: 6057909
Filing Date: 2000-05-02
Classification: G01C,G01S,G02B

Abstract:
Apparatus for creating an image indicating distances to objects in a scene, comprising:a modulated source of radiation, having a first modulation function, which directs modulated radiation toward a scene such that a portion of the radiation from the source is reflected from points in the scene and reaches the apparatus;a detector, which detects radiation reflected from the scene, modulated by a second modulation function, and generates, responsive to said detected modulated radiation, signals responsive to a part of the portion of the reflected radiation, the part being dependent on the distance of a point in the scene, associated with a particular signal, from the apparatus;a processor, which receives signals from the detector and forms an image, based on the signals, having an intensity value distribution indicative of the distance of objects from the apparatus; anda controller, which varies at least one of the first and second modulation functions, responsive to the intensity value distribution of the image formed by the processor.