Patent ID: 8210728

Claim:
An illumination apparatus for a cellular analysis apparatus, which is the illumination apparatus supplying the cellular analysis apparatus with illumination light through a common optical path, the illumination apparatus comprising: a plurality of LEDs of different center emission wavelengths, a photodetector, path sharing means for introducing light emitted from the plurality of LEDs into the common optical path, light-introducing means located on the common optical path to intercept a portion of the light emitted from the plurality of LEDs and travelling along the common optical path, for introducing the intercepted portion of light into the photodetector, a feedback controller for controlling turning-on states of the LEDs over preset states in accordance with an amount of light emitted from the plurality of LEDs detected by the photodetector, and illumination light supplying means located on the common optical path downstream from the light-introducing means, to receive and supply light emitted from the plurality of LEDs and travelling along the common optical path excluding the intercepted portion of light intercepted by the light-introducing means, as illumination light for a cellular analysis, wherein the light-introducing means is a reflecting member that reflects the intercepted portion of light toward the photodetector, and wherein a position of the reflecting member relative to the common optical path is adjustable and an amount of the intercepted portion of light reflected toward the photodetector is adjustable by adjustment of the position of the reflecting member relative to the common optical path.