Optical lens and lighting device having same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorLI-YING WANG HE
Life of this patent
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Abstract
An optical lens for increasing viewing angle of light from a light emitting diode includes a bottom surface, a reflective surface, and a side surface connected between the bottom surface and the reflective surface. The light emitting diode is received in the bottom surface. The reflective surface defines a cone-shaped recess and is concaved from a top of the optical lens towards the bottom surface. A vertex angle of the cone-shaped recess defined by the reflective surface is less than or equal to 60 degrees.
Claims16
An optical lens for increasing viewing angle of light from a light emitting diode, comprising:
- a bottom surface configured for being proximate to the light emitting diode;
- a reflective surface, defining a cone-shaped recess and concaved from a top of the optical lens towards the bottom surface, a vertex angle of the cone-shaped recess defined by the reflective surface being less than or equal to 60 degrees;
- and
- a side surface, connected between the bottom surface and the reflective surface.
A lighting device, comprising:
- an optical lens comprising a bottom surface, a reflective surface, and a side surface connected between the bottom surface and the reflective surface, the reflective surface defining a cone-shaped recess and concaved from a top of the optical lens towards the bottom surface, a vertex angle of the cone-shaped recess defined by the reflective surface being less than or equal to 60 degrees;
- and
- a light emitting diode located at a side of the bottom surface away from the reflective surface, light from the light emitting diode emitting into the optical lens via the bottom surface, the light in the optical lens being reflected by the reflective surface to emit out of the optical lens via the side surface.
Dependencies are inferred from the claim text.