| 摘要 |
PROBLEM TO BE SOLVED: To provide a photosensitive imaging device, equipped with at least a set to photosensors having high sensitivity especially at the orange (about 600 nm) region of a visible spectrum. SOLUTION: A raster input scanner 102, which is a photosensitive imaging device for recoding images across the entire visible spectrum, is provided with a set of photosensors which have a peak response around the orange region (about 600 nm) of the spectrum. This peak response is obtained by combining the responses of photosensors associated with a filter, which admits red or infrared wavelengths the longer and the responses of photosensors associated with a filter which admits orange wavelengths and longer. In another cases, the photosensor is structured to attenuate longer wavelengths, and by combining it with a filter, which admits orange and longer wavelengths, a peak behavior around the orange part of the spectrum can be simulated.
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