| 摘要 |
PROBLEM TO BE SOLVED: To provide an image sensor having a plurality of focus detection pixels dispersed in a plurality of imaging pixels reducing saturation of output signals of the focus detection pixels prior to saturation of output signals of the imaging pixels. SOLUTION: A spectrometry device includes: a diffraction element for dispersing a light flux from a light source at a diffraction angle in accordance with the wavelength; a detector for detecting a light flux of a predetermined wavelength dispersed by the diffraction element; and a filter disposed in a travelling optical path of the dispersed light flux of a predetermined wavelength and having a wavelength transmission characteristic to transmit the predetermined wavelength and attenuate a wavelength that is substantially half of the predetermined wavelength. COPYRIGHT: (C)2011,JPO&INPIT |
