Requirements on LEDs for advanced optical systems

Joachim Reill; Alexander Wilm

doi:10.1117/12.696128

13 February 2007 Requirements on LEDs for advanced optical systems

Joachim Reill, Alexander Wilm

Proceedings Volume 6486, Light-Emitting Diodes: Research, Manufacturing, and Applications XI; 64860Z (2007) https://doi.org/10.1117/12.696128
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

The use of LEDs in advanced optical systems such as LED projectors or automotive headlamps is usually limited by the optical extend of the light source. The optical extend (or étendue) is defined as the product of the optical area and the divergence angle of the emission. In our paper, we discuss the consequences of such limitations on the design and performance of optical systems. The system optimization involves the chip technology, package design and the primary optics, producing an optical extend that has to match with the optical extend of the imager component. It will be shown how these optical laws put constraints on the LED light source and the design of suitable light engines. The benefits of LED light sources for the above mentioned applications will also be demonstrated.

Citation Download Citation

Joachim Reill and Alexander Wilm "Requirements on LEDs for advanced optical systems", Proc. SPIE 6486, Light-Emitting Diodes: Research, Manufacturing, and Applications XI, 64860Z (13 February 2007); https://doi.org/10.1117/12.696128

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