Abstract

A testing instrument for camera lenses is described which automatically measures transfer functions and line spread functions provided the focusing plane is maintained. The frequency covers a continuous range of 0 lines/mm to 150 lines/mm. The gauging to 1 with 0 lines/mm of the transfer function is automatic under all f stop, color, and defocusing conditions. The misalignment caused by instrumentation and the measuring principle is compensated by a function potentiometer. The instrument described allows focusing to infinity by collimators and focusing up to 6 m without collimators. Evaluated and measured curves are compared.

© 1968 Optical Society of America

An Instrument for Determining the Transfer Function of Optical Systems

Paul Kuttner
Appl. Opt. 7(6) 1029-1033 (1968)

An Instrument for Measurement of the Optical Transfer Function

R. R. Shannon and A. H. Newman
Appl. Opt. 2(4) 365-369 (1963)

General Transfer Function for the Pinhole Camera

Richard E. Swing and Dennis P. Rooney
J. Opt. Soc. Am. 58(5) 629-635 (1968)

Flare and Optical Transfer Function

K. Rosenhauer and K. Rosenbruch
Appl. Opt. 7(2) 283-287 (1968)

An Instrument for Measuring the Contour of the Cornea

George G. Cocks
Appl. Opt. 7(1) 151-154 (1968)