Optical apparatus and method

Details Optical apparatus and method Optical apparatus and method

1976-11-10

1978-08-29

Corbin, John K.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

356127, G01B 900

Patent

active

041100468

ABSTRACT:
Optical test apparatus and method for testing various parameters of a lens system such as a T.V. lens system. A single apparatus may be used for testing the modulation transfer function, glare, spectral transmission, relative field illuminance, transverse color, T stop, and back focal distance.
The apparatus comprises a pin hole light source and an analyzer means in which the lens may be mounted including a set of screens carrying varying patterns for measuring different parameters. The light transmitted through the screens is measured by a light detector means and the output signal is analyzed to provide a measurement of the parameters.

REFERENCES:
patent: 2292968 (1942-08-01), Peters
patent: 3438713 (1969-04-01), Heynacher et al.
patent: 3519358 (1970-07-01), Kuttner et al.
patent: 3783296 (1974-01-01), Blevins
patent: 3792272 (1974-02-01), Harte et al.
Cox, A., Optics, London: Focal Press, Eleventh edition, 1956, pp. 253, 255, 258, 259, 260.
Jenkins et al., Fundamentals of Optics, Third edition, New York: McGraw-Hill, 1957, pp. 157-158.

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