Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-04-06
1995-12-12
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359212, 359216, 359823, G02B 2608
Patent
active
054755220
ABSTRACT:
An optical scanner has a light source device for emitting a light beam for performing an optical scanning operation; a cylindrical lens system for converging the light beam from the light source device only in a cross scan-corresponding direction and focusing and forming the light beam as a linear image extending in a main scan-corresponding direction; an optical deflector for reflecting the light beam from this cylindrical lens system on a deflecting reflecting face and deflecting this light beam at an equal angular velocity; an image forming mirror system for converging the deflected light beam as a light spot on a scanned face and performing the optical scanning operation at an equal speed by using the light spot; and an adjusting mechanism for displacing and adjusting a position of the cylindrical lens system in an optical axis direction thereof.
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Matsuda et al, "Laser Printer Scanning System with a Parabolic Mirror", Applied Optics/vol. 17, No. 6, Mar. 15, 1978, pp. 878-884.
Atsuumi Hiromichi
Itabashi Akihisa
Phan James
Ricoh & Company, Ltd.
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