LED illumination control and color mixing with Engineered Diffusers

Tasso R. M. Sales; Stephen H. Chakmakjian; Donald J. Schertler; G. Michael Morris

doi:10.1117/12.566081

20 October 2004 LED illumination control and color mixing with Engineered Diffusers

Tasso R. M. Sales, Stephen H. Chakmakjian, Donald J. Schertler, G. Michael Morris

Proceedings Volume 5530, Fourth International Conference on Solid State Lighting; (2004) https://doi.org/10.1117/12.566081
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

We propose and demonstrate the use of Engineered Diffusers for control and distribution of LED light for general lighting applications. These diffusers are based on refractive microstructures and enable the efficient use of energy by controlling light propagation and directing it to specific regions of space. The microstructures are generally microlens-based arrays with each microlens elements individually designed to meet the desired scatter properties. In addition to light control, Engineered Diffusers can be used for RGB mixing to produce white light with variable color temperature, depending on the RGB content of the source. A single Engineered Diffuser component can be used for efficient color mixing and illumination control. We also discuss the fabrication of Engineered Diffusers by means of a single-point laserwriting method with capability to manufacture the deep refractive structures needed for LED beam shaping.

Citation Download Citation

Tasso R. M. Sales, Stephen H. Chakmakjian, Donald J. Schertler, and G. Michael Morris "LED illumination control and color mixing with Engineered Diffusers", Proc. SPIE 5530, Fourth International Conference on Solid State Lighting, (20 October 2004); https://doi.org/10.1117/12.566081

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available