Patent ID: 8246197
Filing Date: 2012-08-21
Classification: F21S,F21V,F21Y,G02B

Abstract:
1. A lens array being substantially a part of a cylinder, the lens array comprising a longitudinal axis and a cylindrical surface extending along the longitudinal axis, the lens array defining a plurality of groove-shaped spaces in the cylindrical surface and arranged along the longitudinal axis, the lens array comprising a plurality of lenses arranged along the longitudinal axis, each of the plurality of lenses having a corresponding one of the groove-shaped spaces and being for coupling with a point light source in the corresponding groove-shaped space, each lens comprising: a first light incident surface at a bottom of the corresponding groove-shaped space; a second light incident surface at a sidewall of the corresponding groove-shaped space and connected with the first light incident surface; a reflecting surface which is a part of the cylindrical surface and connected with the second light emitting surface; a first light emitting surface at a bottom of the part of the cylinder and directly opposite to the first light incident surface, wherein light entering the lens through the first light incident surface exits from the first light emitting surface; and a second light emitting surface also at the bottom of the part of the cylinder and connected between the first light emitting surface and the reflecting surface, wherein light entering the lens through second light incident surface is reflected by the reflecting surface and directed to the second light emitting surface to exit the lens.