US Patent 7268938 In-vivo examination apparatus

An in-vivo examination apparatus in which the examination angle can be changed while keeping an examination site in focus to carry out accurate in-vivo examination is provided. The in-vivo examination apparatus includes a stage on which a living organism is mounted, a measurement head that irradiates the living organism on the stage with light emitted from a light source and detects light returning from the living organism, and a rotation mechanism that rotates the measurement head about a fixed point on the stage.