Patent ID: 7920733

Claim:
A biochemical examination apparatus for measuring light emitted from a biochemical examination array to analyze a biochemical reaction, comprising: illumination means for applying exciting light to a biochemical examination array; capturing means for capturing an optical image emitted from the biochemical examination array; and recording means for saving the captured optical image; wherein the capturing means repeatedly captures an optical image while gradually prolonging an exposure time from an initial value defined by a first parameter; the recording means starts recording the optical image when a maximum intensity of all pixels of the captured optical image becomes equal to or greater than an intensity defined by a second parameter, and finishes recording an optical image when a minimum intensity of pixels in an area smaller than an entire area of the captured optical image becomes greater than an intensity defined by a third parameter; and the recording means finishes recording the optical image when the exposure time becomes larger than a value defined by a fourth parameter or the number of optical images recorded becomes larger than a value defined by a fifth parameter before the minimum intensity of pixels in the area of the captured optical image that is smaller than the entire area becomes greater than the intensity defined by the third parameter.