SIDE ILLUMINATION LENS AND LUMINESCENT DEVICE USING THE SAME
First Claim
1. A light emitting device, comprising:
- a light emitting diode;
a lens arranged to receive light from the light emitting diode, the lens comprising a total reflection surface having a total reflection slope with respect to a central axis of the light emitting diode; and
at least one of a linear refractive surface and a curved refractive surface formed to extend away from the central axis and beyond a periphery of the total reflection surface.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a side illumination lens and a luminescent device using the same, and provides a body, a total reflection surface with a total reflection slope with respect to a central axis of the body, and a linear and/or curved refractive surface(s) formed to extend from a periphery of the total reflection surface; and a luminescent device including the lens. According to the present invention, a lens with total internal reflection surfaces with different slopes, and a linear and/or curved refractive surface(s) allows light emitted forward from a luminescent chip to be guided to a side of the lens. Further, a linear surface(s) formed in a direction perpendicular or parallel to a central axis of a lens and a curved surface are formed on an edge of the lens so that a process of fabricating the lens is facilitated, thereby reducing a defective rate and fabrication costs of the lens.
39 Citations
11 Claims
-
1. A light emitting device, comprising:
-
a light emitting diode; a lens arranged to receive light from the light emitting diode, the lens comprising a total reflection surface having a total reflection slope with respect to a central axis of the light emitting diode; and at least one of a linear refractive surface and a curved refractive surface formed to extend away from the central axis and beyond a periphery of the total reflection surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification