Patent ID: 8654173
Filing Date: 2014-02-18
Classification: G02B,G03G,H04N

Abstract:
1. An optical scanning apparatus comprising an optical beam emission unit that emits an optical beam, a light guiding unit that guides the optical beam, a deflection unit that deflects the optical beam, and a chamber-shaped housing that accommodates the optical beam emission unit, the light guiding unit, and the deflection unit, wherein the housing comprises a base portion for installation of the optical beam emission unit, the light guiding unit, and the deflection unit, and cover portions, each cover portion including a respective indented heat emission channel that transmits heat inside the housing to a fluid therein, and wherein the heat emission channels are disposed to extend along the same direction, and fluid moving devices cause the fluid in one heat emission channel to flow in an opposite direction to the fluid in the other heat emission channel.