Gaussian surface lens quantum photon converter and methods of controlling LED colour and intensity

• US 9,030,108 B2
• Filed: 05/07/2012
• Issued: 05/12/2015
• Est. Priority Date: 05/07/2012
• Status: Expired due to Fees

• Current Assignee: Wepower Technologies, LLC
• Original Assignee: David Deak Jr, David Deak, Sr.
• Inventors: Deak, David Sr., Deak, David Jr.
• Primary Examiner(s): Parker, Kenneth
• Assistant Examiner(s): Fan, Bo
• Application Number:
  US13/465,604
• Publication Number:
  US 20130293123A1
• Time in Patent Office: 1,100 Days
• Field of Search: 257/17, 257/98, 313/512, 315/158, 705/26.1, 136/255, 362/231
• US Class Current: 315/186
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: C08G 18/10 Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• CPC Class Codes: C08G 18/227 of antimony, bismuth or arsenic
• CPC Class Codes: C08G 18/2885 containing halogen atoms
• CPC Class Codes: C08G 18/4211 derived from aromatic dicarboxylic acids and dialcohols
• CPC Class Codes: C08G 18/4238 derived from dicarboxylic acids and dialcohols
• CPC Class Codes: C08G 18/44 Polycarbonates
• CPC Class Codes: C08G 18/4854 Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
• CPC Class Codes: C08G 18/69 Polymers of conjugated dienes hydrogenated polymers of conjugated dienes C08G18/6208
• CPC Class Codes: C08G 18/73 acyclic
• CPC Class Codes: C08G 18/755 and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
• CPC Class Codes: C08G 18/758 containing two or more cycloaliphatic rings
• CPC Class Codes: C08G 18/765 alpha, alpha, alpha', alpha', -tetraalkylxylylene diisocyanate or homologues substituted on the aromatic ring
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 53/00 Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48137 the bodies being arranged next to each other, e.g. on a common substrate
• CPC Class Codes: H01L 27/156 two-dimensional arrays
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 2933/0083 : Periodic patterns for optical field-shaping in or on the semiconductor body or semiconductor body package, e.g. photonic bandgap structures
• CPC Class Codes: H01L 33/502 : Wavelength conversion materials
• CPC Class Codes: H01L 33/58 : Optical field-shaping elements
• CPC Class Codes: H05B 45/3578 : Emulating the electrical or functional characteristics of discharge lamps
• CPC Class Codes: H05B 45/40 : Details of LED load circuits
• CPC Class Codes: H05B 45/50 : responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H10K 59/90 : Assemblies of multiple devices comprising at least one organic light-emitting element
• CPC Class Codes: H10K 71/00 : Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: Y10T 428/139 : Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

This invention is a photon-interactive Gaussian surface lens method means that converts incident photons from a single or a plurality of wide band gap semiconductor class light emitting diode dies, into a secondary emission of photons emanating from a composite photon transparent colloidal stationary suspension of quantum dots, high efficiency phosphors, a combination of quantum dots and high efficiency phosphors and nano-particles of metal, silicon or similar semiconductors from the IIIB and IVB Group of the Periodic Table and any nano-material and/or micro/nano spheres that responds to Rayleigh Scattering and/or Mie Scattering; and a plurality of quantum dots in communication with said nano-particles in said suspension. The apparatus and methods according to the present invention provides in improved narrow pass-band of red, green, and blue photon efficiency over phosphor based conversion. Utilizing the invention'"'"'s methodology, the white resultant color temperature is stabilized against internal semiconductor thermal fluctuations or ambient thermal variations.

Claims

1. A photon converter disposed over a light emitting diode having a light emitting region providing photons therefrom at a selected wavelength:

comprising;

a stationary colloidal suspension volume lens comprising one of photon transparent epoxy and polymer plastic, disposed to receive said light emitting diode photons, said stationary colloidal suspension volume being removably disposed on said light emitting diode, said stationary colloidal suspension volume including

a plurality of nano-particles of one of metal, silicon and similar semiconductor material from the IIIB and IVB Group of the Periodic Table suspended within said colloidal volume, wherein said nano-particles are selected to resonate with said light emitting diode wavelength photons providing a re-emitted photon at said light emitting diode wavelength;

a plurality of quantum dots suspended within said colloidal volume lens and of selected size providing a selected one of a broadband emission with a range of substantially 420- 710 nm in response to incident light emitting diode photons and a monochromatic light emission; and

a plurality of one of a micro and a nano transparent spheres of one of a glass polymer plastic disposed to scatter photons from said quantum dots within said volume, wherein

said stationary colloidal suspension volume lens comprises a Gaussian curvilinear surface volume;

and wherein said light emitting diode is disposed to release incident photons throughout said photon transparent epoxy and polymer plastic embodiment for quantum interaction with said quantum dots to establish one of a designed white colour temperature expressed in degrees Kelvin and a designed substantially single colour temperature expressed in degrees Kelvin.

2. The photon converter as recited in claim 1, comprising a selected ratio of red-to-green quantum dots, silicon nano-particles, and glass or polymer micro spheres are utilized to form a spectrum of desired emitted “

white”

light colour temperatures measured in degrees Kelvin from a light emitting diode.

3. The photon converter as recited in claim 1, wherein said plurality of quantum dots includes ultra small quantum dots of size diameter less than 2 nanometers, silicon nano-particles, and at least one of glass and polymer micro spheres are disposed within said stationary epoxy colloidal suspension volume lens and utilized to convert ultraviolet (˜

450 nm) incident photons from said light emitting diode to usable “

white”

light.

4. The photon converter as recited in claim 1, wherein said epoxy is utilized that has inherent characteristics of passing without attenuation throughout its volume, ultraviolet light of a spectrum associated with desired Stokes absorption to emission shift values inherent of said quantum dots.

5. The photon converter as recited in claim 1, wherein said lens stationary colloidal suspension volume is disposed over an array of a plurality of LED dies.