PHOTOGRAPHIC PRODUCTION OF VARIABLE LIGHT TRANSMISSION MASKS,
Abstract
The problem is here solved of modulating a light beam as a one-dimensional function of position on a photographic film mask. This is accomplished by careful determination of the density-exposure behaviour of the film and development of a technique to control the film gamma; and a method of producing the correct film exposure to produce the desired exposure variation. While the problem here was to produce five half-sine waves it can easily be extended to include reasonably arbitrary variations of light transmission. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1960
- Accession Number
- AD0654417
Entities
People
- A. H. Dell
Organizations
- Johns Hopkins University Applied Physics Laboratory