Optical scanning apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorHyung-soo Kim
Life of this patent
Estimating the term…
Abstract
An optical scanning apparatus that includes a light source, a polygon mirror for deflecting a plurality of light beams emitted from the light source, and an image focusing system for causing the light beams deflected by the polygon mirror to form spots on surfaces of a plurality of photosensitive drums, wherein the image focusing system is disposed between the polygon mirror and the photosensitive drums, and includes scanning lenses for causing the beams deflected by the polygon mirror to form spots on the respective surfaces of the photosensitive drums, and the central axes of the scanning lenses are spaced a predetermined distance from optical axes extended from the center of the light source.
Claims15
An image forming apparatus comprising:
- a light source;
- a plurality of photosensitive drums;
- a polygon mirror deflecting a plurality of light beams emitted from the light source;
- and
- an image focusing system causing the light beams deflected by the polygon mirror to form spots on surfaces of the plurality of photosensitive drums, wherein the image focusing system is disposed between the polygon mirror and the photosensitive drums, and comprises scanning lenses causing the beams deflected by the polygon mirror to form spots on the respective surfaces of the photosensitive drums, and central axes of the scanning lenses are spaced a predetermined distance from optical axes extended from the center of the light source.
An optical scanning system comprising:
- a rotatable light deflector;
- a light source to emit a plurality of beams of light that scan a plurality of photosensitive medium surfaces to produce images, wherein the plurality of beams of light are incident onto the rotatable light deflector;
- a first plurality of mirrors arranged with a second plurality of mirrors to reflect the plurality of beams of light deflected from the rotatable light deflector onto a plurality of optical lenses that guide the plurality of beams of light onto the plurality of photosensitive medium surfaces respectively, wherein a center of the optical lenses is offset from a plurality of axes corresponding to the first and second plurality of mirrors.
An optical scanning system comprising:
- a light source that emits a beam of light;
- a light deflector that rotates about a rotational axis and deflects the beam of light at a predetermined angle along a main axis orthogonal to the rotational axis;
- a reflector adjustably defining an optical axis;
- and
- an optical lens having a center axis offset a predetermined distance from the optical axis, wherein the reflector receives the beam of light from the light deflector and reflects the beam of light onto the optical lens, and the beam of light is transmitted through the optical lens and is emitted onto a photosensitive surface,
- wherein equations 0.2≦C1/A1≦3.5 and 0.2≦B1/A1≦3.5 are satisfied, where A1 is a distance measured between the main axis and a point where the beam of light is deflected by the light deflector, B1 is a distance measured between the optical axis and the center axis, and C1 is a distance measured between the optical axis and the point where the beam of light is emitted onto the photosensitive surface.
Dependencies are inferred from the claim text.