Abstract

A TV picture or any other line-scan image facsimile is anisotropic. Its intensity varies continuously along a sweep, and its resolution capability in this direction can be described by a modulation transfer function (MTF). In the orthogonal direction the facsimile’s fine structure is discontinuous, and only discrete spatial frequencies can be reproduced. Such a system can be characterized by its MTF in the sweep direction and the ratio of its sweep interval and spot diameter. If the spot has a rotationally symmetric Gaussian intensity distribution, the fine structure of the facsimile can be described in terms of the Gaussian spot profile. With a compatible relay-lens design, the optimum spot diameter for a CRT-to-film recording system is less than that for a directly viewed display.

© 1979 Optical Society of America

Focus correction for a CRT color facsimile system

James R. Jenness
Appl. Opt. 23(4) 529-536 (1984)

Scophony light valve

Richard V. Johnson
Appl. Opt. 18(23) 4030-4038 (1979)

Performance evaluation of spatial light modulators

David Casasent
Appl. Opt. 18(14) 2445-2453 (1979)

Structure and spatial frequency spectrum of Sayce test patterns

B. J. Pernick
Appl. Opt. 18(17) 3027-3031 (1979)

Laser recording with truncated Gaussian beams

H. M. Haskal
Appl. Opt. 18(13) 2143-2146 (1979)