Patent ID: 9423719
Filing Date: 2016-08-23
CPC Classification: G03G,H04N

Claim Text:
1. An optical scanning device comprising: a housing; a light source portion including a first light source and a second light source, the first light source emitting a first light beam, the second light source emitting a second light beam; a deflector whose rotation axis is inclined with respect to a first direction and a second direction, the first direction being opposite to the second direction, the deflector being configured to reflect the first light beam diagonally on a side of a third direction that is perpendicular to the first direction and the second direction, and on a side of the first direction, the deflector being configured to reflect the second light beam diagonally on a side of a fourth direction that is opposite to the third direction, and on a side of the second direction, such that the first light beam scans a first scanned surface and the second light beam scans a second scanned surface; a first focus lens disposed between the deflector and the first scanned surface and configured to focus the first light beam on the first scanned surface; a second focus lens disposed between the deflector and the second scanned surface and configured to focus the second light beam on the second scanned surface; a first mirror group disposed between the first focus lens and the first scanned surface and configured to reflect the first light beam to the first scanned surface; and a second mirror group disposed between the second focus lens and the second scanned surface and configured to reflect the second light beam to the second scanned surface, wherein the first mirror group includes: the second mirror group includes: