Picture scanning and recording using a photoelectric focusing sy

Details Picture scanning and recording using a photoelectric focusing sy Picture scanning and recording using a photoelectric focusing sy

1985-01-02

1987-08-11

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

358292, G01J 120, H04N 1028

Patent

active

046863591

ABSTRACT:
A picture scanning and recording method in obtaining picture signals by photoelectrically scanning sequentially an original picture applied onto an original picture drum by a scanning head moving in the axial direction of the original picture drum, wherein the scanning head is maintained onto a focus-matching position on the surface of an original picture film by minutely moving said scanning head in the direction intersecting at right angles with a scanning light point on the original picture drum according to variation of substantial distance between the film surface of the original picture and a pick-up lens of the scanning head.

REFERENCES:
patent: 4003655 (1977-01-01), Wasilko
patent: 4079248 (1978-03-01), Lehureau
patent: 4230940 (1980-10-01), Minami et al.
patent: 4276471 (1981-06-01), Utagawa
patent: 4447717 (1984-05-01), Nohda
patent: 4618762 (1986-10-01), Hattori et al.

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