Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/4849
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Electronic and Information Engineering | - |
dc.creator | Loo, KH | - |
dc.creator | Lun, WK | - |
dc.creator | Lai, YM | - |
dc.creator | Tan, SC | - |
dc.creator | Tse, CKM | - |
dc.date.accessioned | 2012-03-19T01:37:20Z | - |
dc.date.available | 2012-03-19T01:37:20Z | - |
dc.identifier.uri | http://hdl.handle.net/10397/4849 | - |
dc.language.iso | en | en_US |
dc.rights | Assignee: The Hong Kong Polytechnic University. | en_US |
dc.title | Driving method for improving luminous efficacy of a light emitting diode | en_US |
dc.type | Patent | en_US |
dc.description.otherinformation | US8093821; US8093821 B2; US8093821B2; US8,093,821; US 8,093,821 B2; 8093821; Appl. 12/366,304 | en_US |
dc.description.otherinformation | Inventor name used in this publication: Siew Chong Tan | en_US |
dc.description.otherinformation | Inventor name used in this publication: Chi Kong Michael Tse | en_US |
dc.description.otherinformation | Inventor name used in this publication: Ka Hong Loo | en_US |
dcterms.abstract | A driving method for improving luminous efficacy of a light emitting diode (LED), the method comprising: periodically switching a DC current supplied to the LED between a high current level l [sub H] and a low current level l [sub L], the low current level l [sub L] being fixed at zero or raised above zero to produce a DC offset; and maintaining an average current at a first value I [sub f] by adjusting the duty cycle acting on the high current level l [sub H] and any one from the grouping consisting of: adjusting the high current level l [sub H] and adjusting the low current level l [sub L], and adjusting the high current level l [sub H] or adjusting the low current level l [sub L]. | - |
dcterms.bibliographicCitation | US Patent 8,093,821 B2. Washington, DC: US Patent and Trademark Office, 2012. | - |
dcterms.issued | 2012-01-10 | - |
dc.description.country | US | - |
dc.description.oa | Version of Record | en_US |
Appears in Collections: | Patent |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
us8093821b2.pdf | 608.12 kB | Adobe PDF | View/Open |
Page views
108
Last Week
0
0
Last month
Citations as of Apr 14, 2024
Downloads
37
Citations as of Apr 14, 2024
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.