OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 21, Iss. 13 — Jul. 1, 1982
  • pp: 2461–2464

Optical efficiency of LEDs with hemispherical lenses

Jaroslaw Jarominski  »View Author Affiliations

Applied Optics, Vol. 21, Issue 13, pp. 2461-2464 (1982)

View Full Text Article

Enhanced HTML    Acrobat PDF (477 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



In this paper formulas are derived that describe the optical efficiency of an LED package consisting of a hemispherical lens placed on the cylinder. The dependence of this efficiency on the H/R ratio and the epoxy coefficient of refraction is calculated. In calculations it is assumed that the semiconductor chip, believed to be the point source of radiation, is mounted on the optical axis of the LED package, and the absorption of nonscattering epoxy is small. As an example, the optical efficiency of the LED with H/R = 2.5 and n = 1.5 is calculated: it is equal to 37.4%.

© 1982 Optical Society of America

Original Manuscript: August 21, 1981
Published: July 1, 1982

Jaroslaw Jarominski, "Optical efficiency of LEDs with hemispherical lenses," Appl. Opt. 21, 2461-2464 (1982)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. M. Kontkiewicz, “Calculations of the Angular Characteristics of Light-Emitting Diodes,” Proceedings of ITE36 (1977) (in Polish).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article

OSA is a member of CrossRef.

CrossCheck Deposited