Lens Beam-Concentrating Device
OwnerKeh-Shium LIUinventor
Life of this patent
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Abstract
A lens beam-concentrating device comprises at least one light-emitting diode light source disposed on a lateral edge of a light guide plate. The light source emits light rays toward the light guide plate, after the light rays are directed by the light guide plate, a parallel light beam will emit from an emission surface of the light guide plate to form a plane light source. A first lens element and a second lens element are arranged in front of the light emission surface of the light guide plate for adjusting and collimating the parallel beam, so as to ensure the light rays to emit out of the beam-concentrating device parallel to each other.
Claims17
A lens beam-concentrating device comprising:
- plural light-emitting diode light sources;
- a light guide plate having one lateral edge for mounting the respective light sources and having one end formed with an emission surface for emission of light rays emitting from the respective light sources;
- and
- at least two lens elements being arranged adjacent to the light emission surface and located in order on an optical path where the light rays pass, after the light rays pass through the respective lens elements, the optical path of the light rays will be adjusted at least two times;
- wherein
- a half value full angle of the light rays emitting from the light emission surface is within 0-10 degrees, after the light rays pass through the at least two lens elements, the half value full angle will be reduced within 0-3 degrees.
A lens beam-concentrating device comprising:
- plural light-emitting diode light sources;
- a light guide plate having one lateral edge for mounting the respective light sources and having one end formed with an emission surface for emission of light rays emitting from the respective light sources;
- and
- two lens elements being arranged adjacent to the light emission surface and located in order on an optical path where the light rays pass, one of the two lens elements, which is located closest to the light emission surface of the light guide plate, being a first lens element in the form of a concave lens element, the other of the two lens elements being a second lens element in the form of a convex lens element, after passing through the two lens elements, the optical path of the light rays will be adjusted at least two times;
- wherein
- a half value full angle of the light rays emitting from the light emission surface is within 0-10 degrees, after the light rays pass through the two lens elements, the half value full angle will be reduced within 0-3 degrees.
A lens beam-concentrating device comprising:
- plural light-emitting diode light sources;
- a light guide plate having one lateral edge for mounting the respective light sources and having one end formed with an emission surface for emission of light rays emitting from the respective light sources;
- and
- two lens elements being arranged adjacent to the light emission surface and located in order on an optical path where the light rays pass, one of the two lens elements, which is located closest to the light emission surface of the light guide plate, being a first lens element in the form of a convex lens element, the other of the two lens elements being a second lens element in the form of a convex lens element, after passing through the two lens elements, the optical path of the light rays will be adjusted at least ten times;
- wherein
- a half value full angle of the light rays emitting from the light emission surface is within 0-10 degrees, after the light rays pass through the two lens elements, the half value full angle will be reduced within 0-1 degrees.
Dependencies are inferred from the claim text.