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公开(公告)号：US3573353A
公开(公告)日：1971-04-06
申请号：US3573353D
申请日：1967-12-18
CPC分类号： G02B27/46 , H04N5/84 , Y10S359/90
摘要： This disclosure depicts method and apparatus for the optical detection at distinct detection planes of a plural number of distinct images from a record encoded with a plurality of superimposed images multiplied, respectively, with a unique spatially periodic modulation. More particularly, this disclosure depicts method and apparatus for optical image detection which is especially useful in color television film reproduction, simultaneous color separation photography, or the like. The depicted method and apparatus involves Fourier transforming a modulated record to separate in optical channels in transform space spatial frequency spectra of stored images encoded on the record, spatial filtering the transform pattern, and simultaneously detecting distinct images carried in the separated optical channels. Cathode ray pickup tubes and photosensitive emulsions are shown and described as alternative ways for separately photodetecting the images carried in the respective channels formed.
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