Patent ID: 8491469

Claim:
A biological measurement apparatus for performing spectral measurement on a biological body, the biological measurement apparatus comprising: a tube portion having a distal-end opening portion and a proximal-end opening portion; a liquid delivery apparatus that is connected with the proximal-end opening portion of the tube portion such that light from a light source that emits light in a predetermined wavelength band enters the proximal-end opening portion, and delivers a liquid from the proximal-end opening portion into the tube portion; light separating means that is provided between the proximal-end opening portion and the light source, for separating light entering the proximal-end opening portion and return light which is returned through the liquid after reflection by the biological body as an object and emitted from the proximal-end opening portion, the return light resulting from reflection of the light which enters the proximal-end opening portion and is emitted from the distal-end opening portion after passing through the tube portion, a control section that performs a spectral measurement on the biological body based on an output of a photodetection section that detects the return light which is separated by the light separating means.