Patent ID: 7798679
Filing Date: 2010-09-21
Classification: F21V,F21W,F21Y,G02B,H01L

Abstract:
1. A light-emitting device, comprising: a light-emitting element and a light flux controlling member for controlling light emitted from the light-emitting element, the light flux controlling member having (i) a light-incoming surface from which the light from the light-emitting element enters the light flux controlling member and (ii) a light-outgoing surface from which the light being incident on the light-incoming surface is emitted from the light flux controlling member, the light-incoming surface having a concave curve part that is axisymmetrical with respect to a reference light axis of the light-emitting device, and the light-outgoing surface having (i) a convex curve part that is axisymmetrical with respect to the reference light axis and (ii) a recession continuing to the convex curve part, on a part encompassing an intersection of the reference light axis and the light-outgoing surface; R R A