1982-07-09
1986-01-07
Corbin, John K.
G02B 2717
Patent
active
045630569
ABSTRACT:
An optical system adapted for a laser printer is characterized in that a laser generator provides a laser beam having a cross section of an ellipse whose longitudinal axis is defined by a surface of the laser generator for emitting the laser beam, a first lens receives and passes through the laser beam having the elliptic cross section toward a lower reflector, a second lens receives the laser beam having the elliptic cross section such that a laser element of the laser beam along with a direction orthogonal to the surface of the laser generator is incident upon a longitudinal side of the second lens and images the laser beam having a cross section of an approximate circle to a substantially focused spot at a surface of a light sensitive medium. The optical system is to focus the first lens by rotation with screws formed on a body tube. Preferably, the first lens comprises a focus lens of an axial symmetrical lens including a spherical lens and the second lens comprises a cylindrical lens.
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Tagawa Takao
Urakawa Toshio
Corbin John K.
Gass Rebecca D.
Sharp Kabushiki Kaisha
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