Imaging optical system having a moire elimination effect

Details Imaging optical system having a moire elimination effect Imaging optical system having a moire elimination effect

1990-10-11

1993-12-14

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358225, 358 98, 359708, H04N 530, H04N 5225

Patent

active

052708250

ABSTRACT:
An imaging optical system for forming images of objects on an image surface. The optical system includes an aspherical surface that functions to reduce spatial frequency response of the optical system when aperture size of the optical system is reduced within a variable range and adapted so as to eliminate spurious signal by the aspherical surface.

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