System for minimizing optical distortions and chromatic aberrati

Details System for minimizing optical distortions and chromatic aberrati System for minimizing optical distortions and chromatic aberrati

1989-10-16

1991-06-18

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358214, 355 38, H04N 911, H04N 5253

Patent

active

050253131

ABSTRACT:
In a preferred system a light source provides a light beam which illuminates a film image. A lens is placed in the path of the light beam to focus the image from the film on to a tri-linear color sensor. The length of each of the image sensors and spacing between sensor elements is selected in order to correct for distortions lateral chromatic aberrations in the line scan direction. Longitudinal chromatic aberrations are corrected by tilting the tri-linear sensor in the image plane to align the center of focus for the red, green and blue sensors with the center of focus for the red, green and blue components of the beam, respectively.

REFERENCES:
patent: 4255764 (1981-03-01), Howe
patent: 4278995 (1981-07-01), Fearnside et al.
patent: 4467361 (1984-08-01), Ohno et al.
patent: 4951084 (1990-08-01), von Stein et al.

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