Test patterns for lens evaluation

Details Test patterns for lens evaluation Test patterns for lens evaluation

1979-10-19

1981-06-23

Rosenberger, R. A.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

G01M 1102

Patent

active

042747376

ABSTRACT:
Lens testing charts using a vernier pattern, a sawtooth pattern, and a sinusoidally varying reflectance pattern are described and are used in conjunction with a lens under test to be focussed by said lens onto suitable high contrast film to provide an image from which the quality of the lens may be determined.

REFERENCES:
patent: 4060328 (1977-11-01), Flynt
patent: 4125328 (1978-11-01), Suga
"Resolving Power of Lenses"; Photo Technique, Apr. 1941, pp. 51-52.
"Accepted Standards for 16-mm Projection"; International Projectionist, Jul. 1952, pp. 23-24.

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