LIGHT SOURCE

• US 20180245775A1
• Filed: 08/17/2016
• Published: 08/30/2018
• Est. Priority Date: 08/17/2015
• Status: Active Grant

• Current Assignee: Lazurite Holdings LLC
• Original Assignee: Infinite Arthroscopy Inc., Limited
• Inventors: Malinskiy, Eugene, Malinskiy, Ilya, Dudley, Daniel, Fein, Howard
• Granted Patent: US 10,488,018 B2
• Time in Patent Office: Days
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21V 13/14 the elements being filters or photoluminescent elements, reflectors and refractors
• CPC Class Codes: F21V 7/0066 specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified F21V7/16 - F21V7/30 take precedence
• CPC Class Codes: F21V 9/06 for filtering out ultraviolet radiation
• CPC Class Codes: F21V 9/38 Combination of two or more photoluminescent elements of different materials
• CPC Class Codes: F21Y 2115/30 Semiconductor lasers
• CPC Class Codes: H01S 5/0087 for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials
• CPC Class Codes: H01S 5/02212 Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis
• CPC Class Codes: H01S 5/02253 using lenses

Abstract

An integrated light source includes: an emissive radiation source having a first spectrum; an optical element located to direct emissions from the emissive radiation source; a volumetric spectrum converter located to convert emissions directed from the emissive radiation source to emissions having a second spectrum different from the first spectrum; an optical reflector located about the converter; an output filter, the reflector being located to reflect the converter emissions towards the output filter; and a package body having an internal cavity containing the emissive radiation source, optical element, converter, reflector, and filter, wherein desired light radiates from the cavity through the filter.

Claims

1. An integrated light source comprising:

an emissive radiation source having a first spectrum;

an optical element located to direct emissions from said emissive radiation source;

a volumetric spectrum converter, said converter being located to convert emissions directed from said emissive radiation source to emissions having a second spectrum different from said first spectrum;

an optical reflector located about said converter;

an output filter, said reflector being located to reflect said converter emissions towards said output filter; and

a package body having an internal cavity, said cavity containing said emissive radiation source, optical element, converter, reflector, and filter, wherein desired light radiates from said cavity through said filter.

2. A light source according to claim 1, wherein said radiation source operates in the range of 400 nm to 480 nm.

3. A light source according to claim 2, wherein said radiation source operates in the range of 430 nm to 470 nm.

4. A light source according to claim 1, wherein the optical element may either collimate, convergently focus, or divergently focus the emissive radiation source emissions onto the converter.

5. A light source according to claim 1, wherein the optical reflector redirects omnidirectional light into a desired optical path.

6. A light source according to claim 5, wherein the optical reflector includes a layer of reflective material that enhances its capacity to redirect light.

7. A light source according to claim 1, wherein the converter converts the emissions from the emissive radiation source to emissions of different wavelength, a narrower spectrum, or a broader spectrum, of non-coherent radiation.

8. A light source according to claim 7, wherein the converter is composed of a converting material volumetrically disposed in a substrate of non-converting material to form a homogeneous composite.

9. A light source according to claim 8, wherein the converter is created using a process that includes at least one of extrusion, coating, lamination, blending, mixing, or suspending.

10. A light source according to claim 9, wherein the process of creating the converter is the extrusion of the substrate with the converting material as a blended or multilayered solid composite.

11. A light source according to claim 9, wherein the solid composite has a number of layers between 2 and 500,000.

12. A light source according to claim 8, wherein the converter does not have any defects including voids, entrapped gas, air bubbles, adulterating particulate of any material other than those purposely desired, or entrapped liquid of any sort, either vapor or liquid state, larger than 1 micron.

13. A light source according to claim 8, wherein the converter includes one or more phosphors, each with a particular particulate size providing an emission of radiation that is of a stable or variable wavelength.

14. A light source according to claim 8, wherein the converter possesses a ratio of one or more converting materials to the substrate that can be tuned for specified end use performance metrics.

15. A light source according to claim 14, wherein the converter possesses a ratio of converting material to the substrate between 5% and 15% by volume.

16. A light source according to claim 8, wherein the converter possesses dimensions that can vary in thicknesses and diameters which can be tuned for specified end use performance metrics.

17. A light source according to claim 16, wherein the converter possesses a thickness between 0.5 mm and 5 mm and a radius between 0.5 mm and 5 mm.

18. A light source according to claim 1, wherein the filter eliminates any emission from the emissive radiation source that has not been converted by the converter as well as optionally further conditioning the emitted light.

19. A light source according to claim 1, wherein the emissive geometry of the emitted radiation spectrum from the device may be further conditioned, directed, focused, collimated, reflected, refracted, diffracted, or otherwise modified with the inclusion of suitable optical components.