Abstract

Uniform illumination was generated by use of a large number of diode laser emitters and a single nonimaging paraboloid with a Lambertian scatterer in the truncation plane. Laser light traverses a path toward the Lambertian surface and back by total internal reflection. An overall efficiency of 69% was demonstrated. Improvements that would increase the efficiency to more than 85% are suggested. The illuminated area is circular, with 14-mm diameter. The spatial nonuniformity of the beam profile is less than ±2%.

© 2004 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Freeform lens design for light-emitting diode uniform illumination by using a method of source–target luminous intensity mapping

Jin-Jia Chen, Ze-Yu Huang, Te-Shu Liu, Ming-Da Tsai, and Kuang-Lung Huang
Appl. Opt. 54(28) E146-E152 (2015)

Integral design method for nonimaging concentrators

D. Jenkins and R. Winston
J. Opt. Soc. Am. A 13(10) 2106-2116 (1996)

High-output LED-based light engine for profile lighting fixtures with high color uniformity using freeform reflectors

Jesper Gadegaard, Thøger Kari Jensen, Dennis Thykjær Jørgensen, Peter Kjær Kristensen, Thomas Søndergaard, Thomas Garm Pedersen, and Kjeld Pedersen
Appl. Opt. 55(6) 1356-1365 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription