Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-12-31
1999-05-11
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359204, 359212, 359216, G02B26/08
Patent
active
059033770
ABSTRACT:
Disclosed is a scanning apparatus having a cascade scanning optical system. The scanning apparatus includes: a first scanning optical system for deflecting a first scanning laser beam to scan a scanning surface; a second scanning optical system for deflecting a second scanning laser beam to scan the scanning surface, wherein each of the first and second scanning optical systems is a telecentric system; a beam splitter positioned such that a first portion of the first scanning laser beam which has been reflected by the beam splitter and a first portion of the second scanning laser beam which has passed through the beam splitter proceed to the scanning surface on a common line thereon extending in a main scanning direction in respective different adjacent ranges of the common line to generate a single scanning line on the scanning surface by a combination of the first portion of the first scanning laser beam and the first portion of the second scanning laser beam; and a first laser beam detector fixed at a position to detect a second portion of the first scanning laser beam which has passed through the beam splitter and a second portion of the second scanning laser beam which has been reflected by the beam splitter when the first and second laser beams start scanning the respective different adjacent rang of the common line.
REFERENCES:
Konica Technical Report vol. 9 (1996), along with an English language translation. (No Month).
Araki Yoshiyuki
Iima Mitsunori
Iizuka Takashi
Kikuchi Shinji
Saito Hiroyuki
Asahi Kogaku Kogyo Kabushiki Kaisha
Phan James
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