| Literature DB >> 15291053 |
Victor M Durán-Ramírez1, Daniel Malacara-Doblado.
Abstract
Keystone distortion that occurs in overhead projectors when the projecting lens head is tilted upward to a high screen is commonly observed. Here we suggest a modification of the typical overhead projector to eliminate this distortion of the image.Year: 2004 PMID： 15291053 DOI： 10.1364/ao.43.004123
Source DB: PubMed Journal: Appl Opt ISSN： 1559-128X Impact factor: 1.980