1 December 1984 Multidirectional Holographic Scanner For Point-Of-Sale Bar-Code Symbol Reader
Author Affiliations +
Abstract
A multidirectional laser beam scanning method using holographic zone plates is described. To increase the number of scanning directions, not only is a hologram disk rotated at fixed speed (col ), but a laser beam incident on the disk is reversely rotated at another speed (w2). The focus of the laser beam diffracted by the hologram disk draws multidirectional scanning lines. The number of scanning directions (n) is equal to (w1 /c02) + 1. Experimentally, the effectiveness of this method is demonstrated for nineteen scanning directions. This scan method is applied to a point-of-sale (POS) scanner to read a non-moving bar-code symbol.
Kazuro Nishi, Kazuro Nishi, Koichiro Kurahashi, Koichiro Kurahashi, Takahiro Kubo, Takahiro Kubo, } "Multidirectional Holographic Scanner For Point-Of-Sale Bar-Code Symbol Reader," Optical Engineering 23(6), 236784 (1 December 1984). https://doi.org/10.1117/12.7973383 . Submission:
JOURNAL ARTICLE
4 PAGES


SHARE
RELATED CONTENT

Design Rules For Holographic Optical Scanning Elements
Proceedings of SPIE (October 05 1987)
Hologram Formation With White Light
Proceedings of SPIE (May 13 1980)
Compound Holographic Scanners
Proceedings of SPIE (November 26 1984)
Programmable holographic scanning
Proceedings of SPIE (February 28 1991)
Holographic Scanner For Laser Printer
Proceedings of SPIE (September 19 1982)

Back to Top