Abstract

Using a first order expression for the angular flux distribution of energy emitted by a phosphor, we are able to calculate the modulation transfer function of thin transparent membranes that are used for transferring images from the phosphor to photosensitive materials, such as photographic emulsions or photocathodes, where the phosphor and photographic emulsions or photocathodes are on opposite sides of the membrane. The loss in information in going through the membrane is due to the scattering and diffusion of light. This loss is shown to depend upon the angular distribution of light emitted by the phosphor, the degree of optical contact between the phosphor and membrane, the membrane thickness, and the ratio of the indexes of refraction of the membrane and phosphor. The results appear to be in good agreement with experiment.

© 1973 Optical Society of America

Calculation of Modulation Transfer Functions of X-Ray Fluorescent Screens

Robert K. Swank
Appl. Opt. 12(8) 1865-1870 (1973)

Modulation transfer function and efficiency of transparent luminescing materials*

J. Gasper
J. Opt. Soc. Am. 63(6) 714-720 (1973)

Simple and Fast Method for the Presentation of the Two-Dimensional Modulation Transfer Function of X-Ray Systems

G. Groh, E. Klotz, and H. Weiss
Appl. Opt. 12(7) 1693-1697 (1973)

Applications of the Speckle Pattern Techniques to the Visualization of Modulation Transfer Functions and Quantitative Study of Vibrations of Mechanical Structures

J. Bulabois, M. E. Guillaume, and J. Ch. Viénot
Appl. Opt. 12(7) 1686-1692 (1973)

Performance Characteristics of Proximity Focused Ultraviolet Image Converters

Jack T. Williams and Walter A. Feibelman
Appl. Opt. 12(12) 2832-2837 (1973)