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(12) United States Patent (10) Patent No.: US 8,905,588 B2 Krames Et Al

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(12) United States Patent (10) Patent No.: US 8,905,588 B2 Krames Et Al USOO8905588B2 (12) United States Patent (10) Patent No.: US 8,905,588 B2 Krames et al. (45) Date of Patent: *Dec. 9, 2014 (54) SYSTEMAND METHOD FOR PROVIDING USPC ........ 362/293; 362/84; 362/249.02; 362/231; COLOR LIGHT SOURCES IN PROXMITY TO 313/512; 313/502; 313/503; 257/98 PREDETERMINED WAVELENGTH (58) Field of Classification Search CONVERSION STRUCTURES USPC ............... 362/293, 84, 249.02, 231: 313/512, 313/502,503; 257/98 (71) Applicant: Soraa, Inc., Fremont, CA (US) See application file for complete search history. (72) Inventors: Michael Krames, Mountain View, CA (56) References Cited (US); Troy Trottier, San Jose, CA (US); Frank Steranka, San Jose, CA (US); U.S. PATENT DOCUMENTS William Houck, Fremont, CA (US); Arpan Chakraborty, Chandler, AZ 4,065,688 A 12/1977 Thornton (US) 4,066,868 A 1/1978 Witkin et al. (73) Assignee: Sorra, Inc., Fremont, CA (US) (Continued) FOREIGN PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 CN 101009347 3, 1987 U.S.C. 154(b) by 0 days. CN 1538534 10, 2004 This patent is Subject to a terminal dis (Continued) claimer. OTHER PUBLICATIONS Abare, 'Cleaved and Etched Facet Nitride Laser Diodes, IEEE Jour (21) Appl. No.: 14/256,670 nal of Selected Topics in Quantum Electronics, vol. 4. No. 3, 1998, p. 505-509. (22) Filed: Apr. 18, 2014 (Continued) (65) Prior Publication Data Primary Examiner — Ismael Negron US 2014/O225137 A1 Aug. 14, 2014 Assistant Examiner — William N. Harris (74) Attorney, Agent, or Firm — Kilpatrick Townsend & Related U.S. Application Data Stockton LLP (63) Continuation of application No. 13/328,978, filed on (57) ABSTRACT Dec. 16, 2011, now Pat. No. 8,740,413, which is a An optical device includes a light source with at least two radiation Sources, and at least two layers of wavelength (Continued) modifying materials excited by the radiation Sources that emit radiation in at least two predetermined wavelengths. Embodi (51) Int. Cl. ments include a first plurality of n radiation sources config F2IV 9/00 (2006.01) ured to emit radiation at a first wavelength. The first plurality F2IV 9/16 (2006.01) of radiation sources are in proximity to a second plurality of F2IS 4/00 (2006.01) m of radiation sources configured to emit radiationata second F2/21/00 (2006.01) wavelength, the second wavelength being shorter than the HOI. I./62 (2006.01) first wavelength. The ratio between mand n is predetermined. HOI. 63/04 (2006.01) The disclosed optical device also comprises at least two HOIL 33/00 (2010.01) wavelength converting layers such that a first wavelength HOIL 27/5 (2006.01) converting layer is configured to absorb a portion of radiation HOIL 33/50 (2010.01) emitted by the second radiation Sources, and a second wave (52) U.S. Cl. length converting layer configured to absorb a portion of CPC ............ H0IL33/504 (2013.01); HOIL 27/156 radiation emitted by the second radiation sources. (2013.01) 20 Claims, 19 Drawing Sheets 400 US 8,905,588 B2 Page 2 Related U.S. Application Data 7,038,399 B2 5/2006 Lys et al. 7,053,413 B2 5/2006 D'Evelyn et al. continuation-in-part of application No. 13/019,897, 7,067,985 B2 6/2006 Adachi filed on Feb. 2, 2011, which is a continuation-in-part of 29:22, g39. R s al application No. 13/014,622, filed on Jan. 26, 2011. 7,083,302W wr. B2 8/2006 Chenuynn et et al. al. (60) Provisional application No. 61/424,562, filed on Dec. 7,095,056 B2 8/2006 Vitta et al. 7,113,658 B2 9, 2006 Ide et al. 17, 2010, provisional application No. 61/301,193, 7,128,849 B2 10/2006 Setlur et al. filed on Feb. 3, 2010, provisional application No. 7,148,515 B1 12/2006 Huang et al. 61/357,849, filed on Jun. 23, 2010. 7,173,384 B2 2, 2007 Plotz et al. 7,213,940 B1 5/2007 Van De Venet al. 7,220,324 B2 5/2007 Baker et al. (56) References Cited 7,233,831 B2 6/2007 Blackwell 7,252.408 B2 8, 2007 MaZZOchette et al. 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