Patent ID: 7840257

Claim:
An optical system for examination of biological tissue, comprising: a light source for generating a light beam of a wavelength in a visible to infra-red range to be introduced in the biological tissue spaced apart from said source; a scanning and irradiation system constructed to receive said generated light beam and constructed to irradiate a tissue area of the biological tissue to be examined by scanning said light beam propagating in air, said scanning and irradiation system being spaced apart from the tissue area; a light detector located away from the examined biological tissue and constructed to detect light that has migrated in the examined biological tissue and has propagated in air from the examined biological tissue, said light detector providing detected optical data; and a computer controlled system including electronics for controlling said light source, said light detector and said scanning and irradiation system, said computer controlled system being constructed to separate reflected photons from photons that have migrated inside the examined biological tissue to eliminate use of the reflected photons, said computer controlled system being programmed to calculate tissue oxygenation from said detected optical data, said computer controlled system being programmed to generate an image of the examined tissue based on said calculated tissue oxygenation.