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Shankar M V
Dan Hancu, Mukunda Adyam, Emil Radkov, Prasanth Kumar, Anant Achyut Setlur, Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran, Madras Venugopal Shankar: Phosphor and blends thereof for use in LEDs. Lumination, Fay Sharpe, March 10, 2009: US07501753 (4 worldwide citation)

Phosphor compositions having the formula EueMmAaGgQqNnXx, where M is at least one of Be, Mg, Ca, Sr, Ba, Cd, Sn, Pb or Zn; A is at least one of B, Al, Ga, In, Bi, Sc, Y, La or a rare earth element other than Eu; G is at least one of Si or Ge; Q is at least one of O, S, and Se; X is at least one of F ...


2
Srinath K Aanegola, James T Petroski, Emil Radkov, Stanton E Weaver Jr: Light emitting diode component. Lumination, Fay Sharpe, May 29, 2007: US07224000 (169 worldwide citation)

A light emitting package (8, 8′, 8″, 208, 408) includes a printed circuit board (10, 10′, 10″, 210, 410) supporting at least one light emitting die (12, 12″, 14, 16, 212, 412). A light transmissive cover (60, 60′, 60″, 260, 460) is disposed over the at least one light emitting die. The cover has an ...


3
Thomas F Soules, Chen Lun Hsing Chen, Emil Radkov: Luminescent sheet covering for LEDs. Lumination, Fay Sharpe, January 15, 2008: US07319246 (79 worldwide citation)

A lighting apparatus comprising at least one light emitting diode is disposed on an interconnect board to emit ultraviolet or blue radiation. A polymeric layer including a luminophor is disposed about the lighting apparatus to convert at least a portion of the radiation emitted from the LED into vis ...


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Anant Achyut Setlur, Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran, Shankar Venugopal, Emil Radkov: Garnet phosphor materials having enhanced spectral characteristics. General Electric Company, Fay Sharpe Fagan Minnich & McKee, August 22, 2006: US07094362 (43 worldwide citation)

Phosphor compositions having the formulas (Tb1−x−y−z−wYxGdyLuzCew)3MrAls−rO12+δ, where M is selected from Sc, In, Ga, Zn, or Mg, and where 0


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Dung T Duong, Hyunchul Ko, Randall E Johnson, Paul N Winberg, Emil Radkov: System and method for color mixing lens array. Illumitex, Sprinkle IP Law Group, November 19, 2013: US08585253 (29 worldwide citation)

Embodiments described herein provide optical systems that can mix colors to produce illumination patterns having a large area with uniform color. One embodiment of an optical system can include a set of optical units that each produces an illumination pattern with uniform color and intensity. The op ...


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Anant Achyut Setlur, Emil Radkov: doped phosphors for light generation, and Eu, Ce. Gelcore, Fay Sharpe, June 12, 2007: US07229573 (24 worldwide citation)

Disclosed are phosphor compositions doped with both Ce3+ and Eu2+ and light emitting devices including a semiconductor light source and the above phosphor. Also disclosed are phosphor blends of the above phosphors and one ore more additional phosphors and white light emitting devices incorporating t ...


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James Reginelli, Srinath K Aanegola, Emil Radkov: Light emitting packages and methods of making same. Lumination, Fay Sharpe, November 30, 2010: US07842960 (11 worldwide citation)

In a light emitting package (8), at least one light emitting chip (12, 14, 16, 18) is supported by a board (10). A light transmissive encapsulant (30) is disposed over the at least one light emitting chip and over a footprint area (32) of the board. A light transmissive generally conformal shell (40 ...


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Emil Radkov: White LEDs with tunable CRI. Lumination, Fay Sharpe, August 3, 2010: US07768189 (10 worldwide citation)

A method for the manufacturing of white LEDs is proposed, which can achieve a tunable color rendering index (CRI) or luminosity through the use of at least two phosphor composition layers of essentially the same emission color coordinates, each composition including at least one individual phosphor ...


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Emil Radkov, Anant A Setlur: Full spectrum phosphor blends for white light generation with LED chips. GE Lighting Solutions, Fay Sharpe, March 15, 2011: US07906790 (8 worldwide citation)

A light emitting device including a phosphor blend including four or more phosphors emitting within a specific spectral range to optimize the color rendering index (CRI) for a given color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blu ...


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Nicholas Peter Klase, Dung T Duong, Emil Radkov, Paul N Winberg: Plant growth lighting device and method. ILLUMITEX, Sprinkle IP Law Group, June 23, 2015: US09060468 (5 worldwide citation)

Embodiments described herein provide systems and methods for promoting plant growth that combine beam angle control with spectral control. In one embodiment, an optical device can be configured to emit multiple colors of light at particular wavelengths. The optical device may also be configured to g ...