Patent ID: 6882872

Claim:
A biological information detecting probe by comprising: pressing means which is pressed against a living tissue; detection light emitting means of emitting detection light through light emission surface of said pressing means; and a detection light entrance which said detection light is introduced through a light detection surface of said pressing means; wherein: said light emission surface is substantially parallel to a first plane; said light detection surface is substantially parallel to a second plane; the first plane and the second plane form an angle of less than 180°; at least one of said detection light emitting means or said detection light entrance is formed from a material that has a higher refractive index than said living tissue such that; said detection light is capable of being passed rectilinearly through said living tissue placed in contact with said pressing means and is capable of being introduced into said detection light entrance; and said detection light is refracted at least at one of said light emission surface or said light detection surface with said pressing means held pressed against said living tissue.