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Laser “cross‐hair” sidelight
Author(s) -
Boyer Arthur L.
Publication year - 1978
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.594395
Subject(s) - optics , laser , lens (geology) , laser beams , line (geometry) , cylindrical lens , physics , materials science , mathematics , geometry
A technique is described for forming an optical laser cross‐hair image for use as a radiotherapy sidelight. The technique is developed from a concept introduced earlier by which a line image is formed from a laser beam using a cylindrical lens. By using two cylindrical lenses and appropriate reflectors, two line images can be made to form a cross.