| 摘要 |
<p>PURPOSE:To steepen an absorption characteristic and to obtain an image having high fidelity in color reproduction by providing magenta filters having the spectral transmittance coinciding with the spectral transmittivity of cyan filters in at least the part where the cyan filters do not exist. CONSTITUTION:A cyan stripe filter group 1, a magenta stripe filter group 3 and a yellow stripe filter group 2 are formed to cross each other. Mosaic parts F1-F4 by the group 1 alone, the groups 3 alone, the intersection of the groups 1, 2 and the intersection of the groups 3, 2 are constituted. The transmittivity characteristics in the respective parts are designated as I1-I4. The characteristic I3 coincides with the characteristic I1 in the region 400-560nm wavelength in the part up to the max. value on the short wavelength side thereof. The light in the short wavelength region is no more modulated by the group 1 by setting the average transmittivity between 620-680nm of the group 1 at 5-8%, by which the incorporation of the light in said part into a red channel signal is prevented. The characteristic I3 is along the characteristic I1 in a 500-560 region. The characteristic I3 has a high transmittance by inversion after having a bottom part. The half-value wavelength of the characteristic I1 is shifted to the long wavelength side by such characteristic, by which the absorption characteristic is steepened.</p> |
