LED light bulb with translucent spherical diffuser and remote phosphor thereupon
AssigneeLight Prescriptions Innovators, LLC
InventorsWaqidi Falicoff, Yupin Sun, Will Shatford
Life of this patent
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Abstract
An LED lamp is disclosed comprising a remote phosphor patch on or near the interior surface of a translucent sphere. The phosphor is illuminated by an adjacent light box containing blue LEDs, located within the lamp below the transmissive phosphor patch or alternatively above a reflective phosphor patch. The reflective patch can be either fully or partially populated with phosphor. Below the light box is an electronics bay, and below that is an Edison screw-in base.
Claims13
A remote-phosphor lamp comprising:
- a round, translucent diffuser;
- and
- a light engine that in operation emits light into the interior of the diffuser through an exit aperture occupying a minor portion of the round surface of the diffuser;
- wherein the light engine comprises:
- a light mixing box on the outside of the diffuser, wherein the exit aperture is an exit for light from the light box;
- a phosphor patch;
- and
- a source of light within the light mixing box that in operation illuminates and excites the phosphor;
- and
- wherein the exit aperture is an exit for light from the light box and is smaller than a surface of the light mixing box opposite the exit aperture.
A remote-phosphor LED lamp comprising a translucent spherical diffuser with a phosphor patch, said phosphor patch illuminated with blue light, wherein said blue light is provided by a light mixing box containing blue LEDs, said light mixing box with diffusely reflecting interior walls of high reflectance, said light mixing box with an exit aperture smaller than a surface of the light mixing box opposite the exit aperture, wherein said phosphor patch is on an interior side wall of the said light mixing box which is coupled to a transmissive diffusing surface of the said translucent spherical diffuser.
A remote-phosphor lamp comprising:
- a round, translucent diffuser;
- and
- a light engine that in operation emits light into the interior of the diffuser through an exit aperture occupying a minor portion of the round surface of the diffuser;
- wherein the light engine comprises:
- a phosphor patch;
- and
- a source of light that in operation illuminates and excites the phosphor;
- wherein the light engine comprises a light box on the outside of the diffuser, wherein the light source is within the light box and the exit aperture is an exit for light from the light box;
- and
- wherein the light box is in the shape of a cone frustum, the exit aperture forms the small end of the cone frustum, the light source is on the conical surface of the cone frustum, and a reflective surface forms the large end of the cone frustum.
Dependencies are inferred from the claim text.