Optical Scanning System for Large-size Image Recording

Autor:	Hiroyuki Takenouchi, Nobuhiro Araki, Koichi Kawata, Yukuo Sakagaito
Rok vydání:	1995
Předmět:	Photomultiplier Scanner Materials science business.industry Mechanical Engineering Right angle Physics::Optics Optical scanning Industrial and Manufacturing Engineering Optical axis Optics Mechanics of Materials Head (vessel) Cylindrical lens business Large size
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 61:1110-1116
ISSN:	1884-8354 0387-5024
Popis:	An optical scanning system to read and record large-size images having lm width has been developed. The laser beam is deflected by an acousto-optical deflector (AOD) and the optical head on which the imaging lens is mounted is moved with high speed at right angles to the optical scanning axis. The mechanical feed parallel to the optical scanning axis is also added to scan the entire surface of the image. To maximize the scanning speed, the laser beam is separated into two beams and the data sets are read and recorded simultaneously. The optical design must consider the variations in the optical length caused by the movement of the optical head. A cylindrical lens and a ROM to maintain the constant-frequency sweeping speed are necessary to compensate for the cylindrical effect of the AOD. As the CCD has considerable problems with lighting, it is desirable to use a photomultiplier for the scanner.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0a89c65b33071640b5d505a3aad72e1f https://doi.org/10.1299/kikaic.61.1110 Zobrazit plný text záznamu