| 摘要 |
PURPOSE:To attain optical recording and reproduction with high density, by reproducing a multitrack signal recorded on a film for the transparent and opaque part with a photoconductive sensor array of multitrack incorporating a photoconductive cell and a switch array. CONSTITUTION:A photo sensor array 8 consists of a shift register 1, an address switch 4, and a photodiode 3, and the photodiode 3 is scanned with a scanning pulse generated at each stage of the shift register 1. As a reproduction optical system, a light emitting element 5 is arranged at the focus of an optical lens 6, a light made parallel with the lens 6 is irradiated on a tape 7 and the signal recorded on the tape 7 transparent and opaque parts is read at an optical sensor array 8. Thus, the scattering of the light passing through the transparent part is less and the S/N can not almost be deteriorated. |
