Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-07-13
1993-08-03
Arnold, Bruce Y.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359209, 359820, G02B 2608, G02B 702
Patent
active
052334554
ABSTRACT:
A scanning optical system has a light source for emitting a light beam; a condenser lens for changing the light beam from the light source to a parallel light beam; a connection holding member for supporting the light source and the condenser lens; a deflector for deflecting an approximately parallel light beam transmitted from the condenser lens at an equiangular velocity; and a lens for optical scanning for scanning a scanned face at an approximately equal speed while converging the light beam deflected by the deflector and forming an image in the shape of a spot on the scanned face, the lens for optical scanning being formed by a plastic material for optics. This scanning optical system is constructed such that a coefficient of linear expansion of the connection holding member, a focal length of the condenser lens, a focal length, a refractive index and a coefficient of linear expansion of the lens for optical scanning, and a change in refractive index of the lens for optical scanning with respect to the change in environmental temperature satisfy a predetermined condition. Another condition using other parameters with respect to the lens optical system may be set.
REFERENCES:
patent: 4720168 (1988-01-01), Kaneko
patent: 4815059 (1989-03-01), Nakayama et al.
patent: 4855987 (1989-08-01), Versluis
patent: 4906061 (1990-03-01), Yamaguchi
patent: 4934772 (1990-06-01), Sakuma et al.
patent: 4955682 (1990-09-01), Yamaguchi
patent: 4962982 (1990-10-01), Takanashi
patent: 5005928 (1991-04-01), Suzuki et al.
Sakuma Nobuo
Yamaguchi Katsumi
Arnold Bruce Y.
Phan James
Ricoh & Company, Ltd.
LandOfFree
Scanning optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanning optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning optical system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2275649