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High-efficiency LED COB device combined diced V-shaped pattern and remote phosphor 被引量:2

High-efficiency LED COB device combined diced V-shaped pattern and remote phosphor
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摘要 To further improve the luminous efficiency of LED lightings,this Letter proposes a chip-on-board(COB)device by combining diced staggered V-shaped patterns and remote phosphors.The results show that the V-shaped patterned COB(V-COB)with vertex angles from 120o to 150o can achieve a~17%output power increase(OPI)compared to the conventional COB.V-COB remote phosphor devices(RPDs)are then manufactured and tested.The luminous efficiency of the proposed RPD represents an 11.6%increase at the correlated color temperature of~3000 K.Such an improvement can be attributed to both the decreases of total internal reflections and phosphor backscatterings. To further improve the luminous efficiency of LED lightings,this Letter proposes a chip-on-board(COB)device by combining diced staggered V-shaped patterns and remote phosphors.The results show that the V-shaped patterned COB(V-COB)with vertex angles from 120o to 150o can achieve a~17%output power increase(OPI)compared to the conventional COB.V-COB remote phosphor devices(RPDs)are then manufactured and tested.The luminous efficiency of the proposed RPD represents an 11.6%increase at the correlated color temperature of~3000 K.Such an improvement can be attributed to both the decreases of total internal reflections and phosphor backscatterings.
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2017年第4期56-59,共4页 中国光学快报(英文版)
基金 supported by the National Natural Science Foundation of China(Nos.U1401249 and51375177) the Postdoctoral Science Foundation of China(Nos.2015T80904 and 2014M560659) the Fundamental Research Funds for the Central Universities
关键词 phosphor shaped luminous attributed vertex utilized illumination manufactured silicone nitride phosphor shaped luminous attributed vertex utilized illumination manufactured silicone nitride
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