Directional lamp with adjustable beam spread

Patent metadata

Field	Value
Publication number	US-9303846-B2
Application number	US-201313906387-A
Country	US
Kind code	B2
Filing date	May 31, 2013
Priority date	May 31, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A lamp having a lamp base and a longitudinal axis, with a first lens with more than one segment having optic elements located distal from the lamp base. Where optic elements within a segment have similar optical properties and at least two of the segments have optic elements with different optical properties. A second lens located between the distal lens and the lamp base, the second lens having a plurality of total internal reflection (TIR) lens elements each having a focal point, with a finite light source is positioned at about each of the TIR lens element focal points. At least one of the first lens or the second lens is moveable about the longitudinal axis so as to change an alignment between the optic element segments, the TIR lens elements, and the finite light sources.

First claim

The invention claimed is:

1. A lamp comprising:
a lamp base and a longitudinal axis;
a first lens located distal from the lamp base, the first lens including a plurality of segments having optic elements, wherein each of the optic elements within a segment have similar optical properties; at least two of the segments having optic elements with different optical properties; wherein said first lens is a circular shaped first lens with triangular shaped segments having an apex at a center of the circular shape;
a second lens located intermediate between the distal lens and the lamp base, the second lens including a plurality of total internal reflection (TIR) lens elements each having a focal point, the second lens including at least one set of TIR lens elements positioned along a radius of the circular shape; and
a plurality of finite light sources, each of the plurality of finite light sources located at about a respective one of the TIR lens element focal points.

2. The lamp of claim 1 , wherein at least one of the first lens and the second lens is moveable about the longitudinal axis so as to change an alignment between the optic element segments and the TIR lens elements.

3. The lamp of claim 1 , wherein a size of each TIR lens element within the at least one set of TIR lens elements decreases along the radius from a circumference of the first lens inwards to the center.

4. The lamp of claim 1 , including a finite light source board having mounted thereon the finite light sources.

5. The lamp of claim 1 , wherein the finite light sources are light emitting diodes.

6. The lamp of claim 1 , including a single lens element containing in combination the first lens and the second lens, the single lens element repositionable about a longitudinal axis of the lamp by at least one of rotating and sliding to change a position of the single lens element with respect to the finite light sources.

7. A lamp comprising:
a lamp base and a longitudinal axis;
a single lens element containing in combination a first lens and a second lens;
the first lens located on a first surface of the single lens element distal from the lamp base, the first lens including a plurality of segments having optic elements, wherein each of the optic elements within a segment have similar optical properties, at least two of the segments having optic elements with different optical properties;
the second lens located on a second surface of the single lens element intermediate between the first lens and the lamp base, the second lens including a plurality of total internal reflection (TIR) lens elements each having a focal point;
a plurality of finite light sources, each of the plurality of finite light sources located at about a respective one of the TIR lens element focal points; and
the single lens element repositionable about a longitudinal axis of the lamp by at least one of rotating and sliding to change a position of the single lens element with respect to the finite light sources.

Assignees

• Ge Lighting Solutions Llc

Inventors

• Chinniah Jeyachandrabose
• Yoder Benjamin Lee
• Clynne Thomas

Classifications

• F21V5/008

  Combination of two or more successive refractors along an optical axis · CPC title

• F21V13/04

  the elements being reflectors and refractors {(for vehicle rear lights F21S43/40)} · CPC title

• F21V14/06 Primary

  by movement of refractors {(in vehicle head lamps F21S41/635)} · CPC title

• F21K9/58

  Mechanical Engineering · mapped topic

• F21V5/007 Primary

  Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008) · CPC title