Patent ID: 7967743
Filing Date: 2011-06-28
Classification: A61B

Abstract:
1. An endoscope observation device in which a tip of an insertion portion to be inserted into a body cavity is provided with a light emitting portion that irradiates light rays to a specimen and a light receiving portion that receives an observation light returning from the specimen for forming an image of the observation light received by the light receiving portion, comprising: a distance measurement unit that calculates an absolute distance between the tip of the insertion portion and the specimen through an interference of a low coherence light; a correction unit that corrects a piece of brightness information of the observation light based on the absolute distance calculated by the distance measurement unit; an image forming unit that forms an image of the specimen based on the brightness information of the observation light corrected by the correction unit; and an optical element that splits the low coherence light from the observation light.