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stablinsenanordnung with low chromatic aberration and their unity and verwendender bildablenker

机译:低色差及其统一性和统一性

摘要

A color image scanner is constructed by a three primary color LED array (4) for illuminating an original (2) to be read out, a monochromatic image sensor array (3) and a rod lens array (1) disposed between the original (1) and the image sensor array (3). The focusing parameters of the three kinds of refractive index distribution type rod lenses (11, 12, 13) constituting the rod lens array (1) are set so that each of the operating wavelength band and the predetermined wavelength is different among the kinds, the lens length Zo is equal among the kinds, and the conjugate length TC at each predetermined wavelength is substantially equal among all the kinds. Accordingly, when a color image reading operation is carried out by using the rod lens array which is effective in compactness and brightness, the chromatic aberration of the rod lens array can be sufficiently reduced and high-resolution can be implemented at low cost. IMAGE
机译:彩色图像扫描仪由三个用于照明要读取的原件(2)的三原色LED阵列(4),单色图像传感器阵列(3)和置于原件(1)之间的棒状透镜阵列(1)构成。 )和图像传感器阵列(3)。设置构成棒状透镜阵列(1)的三种折射率分布型棒状透镜(11、12、13)的聚焦参数,使得工作波长带和预定波长中的每一个在种类之间不同。在所有种类中,透镜长度Zo相等,并且在每种预定波长下的共轭长度TC在所有种类中基本上相等。因此,当通过使用在紧凑性和亮度上有效的棒状透镜阵列进行彩色图像读取操作时,可以充分降低棒状透镜阵列的色差,并且可以以低成本实现高分辨率。 <图像>

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