Patent ID: 6800057
Filing Date: 2004-10-05
Classification: A61B

Abstract:
An image obtaining apparatus comprising:a light emitting means for projecting an illuminating light that includes an excitation light onto a target subject, a charge multiplying type solid state image obtaining element for obtaining an optical image based on the re-radiated light, which contains fluorescent light, generated by the target subject upon the irradiation thereof by the illuminating light, and obtaining an output data representing the obtained optical image, a filter means for extracting at least two different wavelength ranges from said fluorescent light so that said solid state image obtaining element can obtain fluorescence images based on fluorescent light of said different wavelength ranges, and a correcting means for detecting dark noise generated by the solid state image obtaining element, and correcting the output data, based on the detected dark noise, to obtain a corrected output data, wherein said correcting means is a means for correcting the output data representing the fluorescence images.