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ISSN: 1023-5086


ISSN: 1023-5086

Scientific and technical

Opticheskii Zhurnal

A full-text English translation of the journal is published by Optica Publishing Group under the title “Journal of Optical Technology”

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УДК: 628.931

Increasing the light-output efficiency from chip-on-board LED modules

For Russian citation (Opticheskii Zhurnal):

Липницкая С.Н., Мынбаев К.Д., Никулина Л.А., Бугров В.Е., Ковш А.Р., Одноблюдов М.А., Романов А.Е.Повышение эффективности вывода света из светодиодных модулей “CHIP-ON-BOARD” //  Оптический журнал. 2013. Т. 80. № 12. С. 45–52.


Lipnitskaya S. N., Bugrov V. E., Kovsh A. R., Odnoblyudov M. A., Mynbaev K. D., Nikulina L. A., Romanov A. E. Increasing the light-output efficiency from chip-on-board LED modules [in Russian] // Opticheskii Zhurnal. 2013. V. 80. № 12. P. 45–52.

For citation (Journal of Optical Technology):

S. N. Lipnitskaya, V. E. Bugrov, A. R. Kovsh, M. A. Odnoblyudov, K. D. Mynbaev, L. A. Nikulina, and A. E. Romanov, "Increasing the light-output efficiency from chip-on-board LED modules," Journal of Optical Technology . 80(12), 751-755 (2013).


This paper discusses the design optimization of LEDs fabricated using chip-on-board technology. Light losses are analyzed, and an attempt is made to create an optical element that maximizes the light-output efficiency from the chips. Experimental measurements of test samples are made, and optimization calculations are carried out using the Zemax software package. As a result of the studies, an optimized shape of the optical element is obtained that makes it possible to reduce the light losses in the device by 10% by comparison with the initial design.


LEDs, LED modules, chip-on-board, light output, ray tracing

OCIS codes: 080.2205, 080.2468, 230.3670, 290.5880


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