US 10,260,708 B2 · Direct emitting LED illumination module for eliminating chromatic dispersion

Abstract

A direct emitting LED illumination module for eliminating chromatic dispersion improves a vehicular LED lamp to comply with related regulations. The LED illumination module includes a LED light source and a plano-convex lens. The LED light source is located at the focus of the plano-convex lens. The LED light source emits light to the plane of the plano-convex lens, and the light exits from the convex surface of the plano-convex lens. The plano-convex lens focuses the light to form a desirable light pattern. Besides, the plane of the plano-convex lens has a microstructure thereon to suppress the angular correlated color temperature deviation of the light pattern and eliminate chromatic dispersion.

Claims11

Dependent claims

A direct emitting LED illumination module for eliminating chromatic dispersion comprising:

a LED light source emitting light;
and
a plano-convex lens having a convex surface and a plane and neighboring the LED light source, the LED light source is located at a focus of the plano-convex lens and located at an identical side of the convex surface and the plane, the light is emitted to the plane and exits from the convex surface, the plane has a microstructure thereon, a size of each dimension of the microstructure is 0.8-4.0 mm, and the microstructure is distributed on a region having an inclined angle of larger than 15 degrees relative to an optic axis of the LED light source.

Dependencies are inferred from the claim text.

Facts

Application

15/788,003Filed 19 Oct 2017

Priority

TW 105220059 U30 Dec 2016

Published

US 2018/0187863 A15 Jul 2018

Granted

16 Apr 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification23 codes

F21V 5/048
Of lens shape: the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis…
F21S 41/141
Characterised by the type of light source: light emitting diodes [LED]
F21S 41/143
Light emitting diodes [LED]: the main emission direction of the LED being parallel to the optical axis of the illuminating device
F21S 41/255
Projection lenses: lenses with a front view of circular or truncated circular outline

Direct emitting LED illumination module for eliminating chromatic dispersion

Life of this patent

Direct emitting LED illumination module for eliminating chromatic dispersion

Life of this patent

Abstract

Claims11