Source: https://patents.google.com/patent/US8866410B2/en
Timestamp: 2018-09-20 21:32:24
Document Index: 588020274

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 61', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60']

US8866410B2 - Solid state lighting devices and methods of manufacturing the same - Google Patents
US8866410B2
US8866410B2 US12257804 US25780408A US8866410B2 US 8866410 B2 US8866410 B2 US 8866410B2 US 12257804 US12257804 US 12257804 US 25780408 A US25780408 A US 25780408A US 8866410 B2 US8866410 B2 US 8866410B2
US12257804
US20090160363A1 (en )
light having x, y color coordinates which define a point which is within an area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third and fourth line segments, said first line segment connecting a first point to a second point, said second line segment connecting said second point to a third point, said third line segment connecting said third point to a fourth point, said fourth line segment connecting said fourth point to said first point, said first point having x, y coordinates of 0.32, 0.40, said second point having x, y coordinates of 0.36, 0.48, said third point having x, y coordinates of 0.41, 0.455, and said fourth point having x, y coordinates of 0.36, 0.38, i.e., the expression “BSY” as used herein has a definition which is the same as definitions of regions defined by specific color coordinates (on CIE Chromaticity Diagrams) set forth in U.S. Pat. No. 7,213,940, issued on May 8, 2007, entitled “LIGHTING DEVICE AND LIGHTING METHOD” (inventors: Antony Paul van de Ven and Gerald H. Negley), the entirety of which is hereby incorporated by reference and other family member applications (including U.S. Patent Application No. 60/868,134, filed on Dec. 1, 2006 and U.S. patent application Ser. No. 11/948,021 (now U.S. Patent Publication No. 2008/0130285), filed on Nov. 30, 2007), as well as other applications filed by and/or owned by the assignee of the present application (e.g., U.S. Patent Application No. 60/857,305, filed on Nov. 7, 2006, entitled “LIGHTING DEVICE AND LIGHTING METHOD” (inventors: Antony Paul van de Ven and Gerald H. Negley; U.S. patent application Ser. No. 11/936,163 (now U.S. Patent Publication No. 2008/0106895), filed Nov. 7, 2007, the entireties of which are hereby incorporated by reference, U.S. Patent Application No. 60/978,880, filed on Oct. 10, 2007, entitled “LIGHTING DEVICE AND METHOD OF MAKING” (inventors: Antony Paul van de Ven and Gerald H. Negley) and U.S. Patent Application No. 61/037,365, filed on Mar. 18, 2008, the entireties of which are hereby incorporated by reference.
U.S. Patent Application No. 60/802,697 , filed on May 23, 2006, entitled “LIGHTING DEVICE AND METHOD OF MAKING” (inventor: Gerald H. Negley) and U.S. patent application Ser. No. 11/751,990 (now U.S. Patent Publication No. 2007/0274063), filed May 22, 2007, the entireties of which are hereby incorporated by reference;
U.S. Patent Application No. 60/857,305, filed on Nov. 7, 2006, entitled “LIGHTING DEVICE AND LIGHTING METHOD” (inventors: Antony Paul van de Ven and Gerald H. Negley and U.S. patent application Ser. No. 11/936,163 (now U.S. Patent Publication No. 2008/0106895), filed Nov. 7, 2007, the entireties of which are hereby incorporated by reference;
U.S. Patent Application No. 60/851,230, filed on Oct. 12, 2006, entitled “LIGHTING DEVICE AND METHOD OF MAKING SAME” (inventor: Gerald H. Negley;) and U.S. patent application Ser. No. 11/870,679 (now U.S. Patent Publication No. 2008/0089053), filed Oct. 11, 2007, the entireties of which are hereby incorporated by reference;
U.S. Patent Application No. 60/752,753, filed on Dec. 21, 2005, entitled “LIGHTING DEVICE” (inventors: Gerald H. Negley, Antony Paul van de Ven and Neal Hunter) and U.S. patent application Ser. No. 11/613,692 now U.S. Patent Publication No. 2007/0139923), filed Dec. 20, 2006, the entireties of which are hereby incorporated by reference;
U.S. Patent Application No. 60/859,013, filed on Nov. 14, 2006, entitled “LIGHTING ASSEMBLIES AND COMPONENTS FOR LIGHTING ASSEMBLIES” (inventors: Gary David Trott and Paul Kenneth Pickard) and U.S. patent application Ser. No. 11/939,059 (now U.S. Patent Publication No. 2008/0112170) , filed Apr. 18, 2007, the entireties of which are hereby incorporated by reference;
FIG. 1 is a drawing of the overall configuration of the power supply and the LED strings for the first representative embodiment. In this embodiment, as noted above, there are three strings. Two of the strings are the same type of LED but from slightly different bins to provide slightly different hues, such as two BSY strings. (See U.S. Patent Application No. 60/868,986, filed on Dec. 7, 2006, entitled “LIGHTING DEVICE AND LIGHTING METHOD” (inventors: Antony Paul van de Ven and Gerald H. Negley), and U.S. patent application Ser. No. 11/951,626 (now U.S. Patent Publication No. 2008/0136313), filed Dec. 6, 2007, the entireties of which are hereby incorporated by reference). The third string is a substantially different hue, such as red LEDs. Differences in brightness and/or hue among the individual solid state light emitters within a string are of concern only if such differences prevent the overall light output from being tuned to the desired color temperature and/or lumen output.
In this embodiment, next, the v′ coordinate is evaluated and the currents supplied to the strings of BSY solid state light emitters are adjusted to move the v′ coordinate into the desired range. If the v′ coordinate is outside the desired range, then the current supplied to one string of BSY solid state light emitters is increased and/or the current supplied to the other string of BSY solid state light emitters is decreased, to move the v′ coordinate of the light closer to the target range. In some embodiments, if the current supplied to one string of BSY solid state light emitters is increased, the current supplied to the other string of BSY solid state light emitters is decreased, so that the overall intensity of the two BSY strings is kept fairly constant, so that the control loop of the reds does not substantially change the red output. (See the sensors disclosed in U.S. Patent Application No. 60/943,910, filed on Jun. 14, 2007, entitled “DEVICES AND METHODS FOR POWER CONVERSION FOR LIGHTING DEVICES WHICH INCLUDE SOLID STATE LIGHT EMITTERS” (inventor: Peter Jay Myers)). In particular embodiments, the current to the BSY strings is initially about equal. If the v′ coordinate is not within the target range, then the current to the first BSY string is set to its maximum value in the adjustment range and the current to the second BSY string is set to its minimum value in the adjustment range. If the v′ coordinate is still not in the target range, then the current through the first BSY string is set to its minimum value and the current through the second BSY string is set to its maximum. In some embodiments, the range of adjustment for the BSY strings may be +/−50%, in other embodiments +/−32% and in still other embodiments +/−20%. In some embodiments, the range of adjustment of the BSY strings provides for less deviation in the v′ direction than the size of the acceptable target range (in such embodiments, even the maximum v′ adjustment will not cause the color point to “overshoot” the acceptable target range; in addition, in such embodiments, the potential deviation in the u′ direction that can be obtained by adjusting the respective currents supplied to the respective strings can be larger, e.g., much larger). Those of skill in the art will appreciate that greater differences in currents between the BSY strings may reduce power supply efficiency. Thus, it may be beneficial to control the bins for the BSY strings such that about equal current through the BSY strings will result in a v′ value within the target range. If there is an insufficient ability to change the current of the BSY strings to move the v′ coordinate enough to hit the target range, then the lighting device cannot be tuned and the part is rejected. Again, to avoid endless loops, if the v′ coordinate is not moved to within the target range within a predefined number of adjustments, the part may be rejected.
means for supplying a permanently established first set current through said first string of solid state lighting devices when line voltage is supplied to said first power line, said means for supplying a permanently established first set current incapable of being adjusted to supply through said first string of solid state light emitters any current other than said permanently established first set current when line voltage is supplied to said first power line;
means for supplying a permanently established second set current through said second string of solid state lighting devices when line voltage is supplied to said first power line, said means for supplying a permanently established second set current incapable of being adjusted to supply through said second string of solid state light emitters any current other than said permanently established second set current when line voltage is supplied to said first power line; and
said second string of solid state lighting devices comprises at least one solid state lighting device which, if power is supplied to said second string, emits light having x, y color coordinates which define a point which is within an area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, said first line segment connecting a first point to a second point, said second line segment connecting said second point to a third point, said third line segment connecting said third point to a fourth point, said fourth line segment connecting said fourth point to a fifth point, and said filth line segment connecting said fifth point to said first point, said first point having x, y coordinates of 0.32, 0.40, said second point having x, y coordinates of 0.36, 0.48, said third point having x, y coordinates of 0.43, 0.45, said fourth point having x, y coordinates of 0.42, 0.42, and said fifth point having x, y coordinates of 0.36, 0.38, and
said first string of solid state lighting devices comprising at least one solid state lighting device which, if power is supplied to said first string, emits light having x, y color coordinates which define a point which is within an area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, said :first line segment connecting a first point to a second point, said second line segment connecting said second point to a third point, said third line segment connecting said third point to a fourth point, said fourth line segment connecting said fourth point to a fifth point, and said fifth line segment connecting said fifth point to said first point, said first point having x, y coordinates of 0.32, 0.40, said second point having x, y coordinates of 0.36, 0.48, said third point having x, y coordinates of 0.43, 0.45, said fourth point having x, y coordinates of 0.42, 0.42, and said fifth point having x, y coordinates of 0.36, 0.38,
said third string of solid state lighting devices comprising at least one solid state lighting device which, if power is supplied to said third string, emits light having a dominant wavelength in the range of from about 600 nm to about 640 urn.
a power supply, said power supply being configured to:
(1) supply a permanently established first set current through said first string of solid state lighting devices when line voltage is supplied to said power line, said power supply incapable of being adjusted to supply through said first string of solid state light emitters any current other than said permanently established first set current when line voltage is supplied to said first power line;
(2) supply a permanently established second set current through said second string of solid state lighting devices when said line voltage is supplied to said power line, said power supply incapable of being adjusted to supply through said second string of solid state light emitters any current other than said permanently established second set current when line voltage is supplied to said first power line; and
14. A lighting device as recited in claim 13, wherein:
(1) supply a first fixed current which is based on:
15. A lighting device as recited in claim 14, wherein said power supply is configured to:
16. A lighting device as recited in claim 13, wherein:
17. A lighting device as recited in claim 13, wherein:
18. A lighting device as recited in claim 13, wherein if current is supplied to said first power line, a color of light exiting said lighting device has x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within 10 MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram.
19. A lighting device as recited in claim 13, wherein:
US12257804 2007-11-28 2008-10-24 Solid state lighting devices and methods of manufacturing the same Active 2031-03-14 US8866410B2 (en)
JP2010536072A JP5399406B2 (en) 2007-11-28 2008-11-21 Lighting device and a manufacturing method thereof
EP20080857984 EP2225914A2 (en) 2007-11-28 2008-11-21 Solid state lighting devices and methods of manufacturing the same
PCT/US2008/084284 WO2009073394A3 (en) 2007-11-28 2008-11-21 Solid state lighting devices and methods of manufacturing the same
CN 200880118772 CN101889475B (en) 2007-11-28 2008-11-21 Solid state lighting devices and methods of manufacturing the same
KR20107014064A KR20100093576A (en) 2007-11-28 2008-11-21 Solid state lighting devices and methods of manufacturing the same
US14474824 Division US9491828B2 (en) 2007-11-28 2014-09-02 Solid state lighting devices and methods of manufacturing the same
US20090160363A1 true US20090160363A1 (en) 2009-06-25
US8866410B2 true US8866410B2 (en) 2014-10-21
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEGLEY, GERALD H.;VAN DE VEN, ANTONY PAUL;BYRD, KENNETH R.;AND OTHERS;SIGNING DATES FROM 20081029 TO 20090305;REEL/FRAME:022372/0504