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Technology | Optics | Aug 24, 2011

R&D of Printoptical Innovator LUXeXceL Made Enormous Progress

LUXeXceL managed to 3D print concave lens with Printoptical Technology LUXeXceL's R&D department managed to print concave lenses for light diverging. The research process to control the inward gradient shape of a typical concave lens is finished successfully, resulting that the printing of concave lenses is now in the final development stage and commercially available. Read more »

Technology | Optics | Aug 28, 2008

Snell's Law - Part I + II

A quick tutorial of rays and waves, the law of reflection and Snell's Law made to support the course "Engineering Optics" at Oklahoma State University. Read more »

Technology | Optics | Nov 16, 2007

Novel semiconductor structure bends light 'wrong' way - the right direction for many applications

Negative refraction: An opportunity for new applications - also for LED lighting? Hilary Parker, Princeton University - A Princeton-led research team has created an easy-to-produce material from the stuff of computer chips that has the rare ability to bend light in the opposite direction from all naturally occurring materials. Read more »

Technology | Optics |

Microstructured Optics for LED Applications

Figure 1: Common types of optics. Optics for use with Light Emitting Diodes are described. Microstructured optics are available and customizable for a wide variety of applications. A few of these will be touched on. A methodology of designing these optics and the photometrics of the typical technology is overviewed. Read more »

Technology | Optics |

Primary and Secondary Optic Materials - LED Luminaire Performance and Lifetime

Figure 1: LumiBright LE line of light engines for commercial applications and incorporating high efficiency primary optics, photosensor, and thermistor on a high thermal conductivity metal core PCB in one package. Numerous articles have been published regarding the lifetime of Light Emitting Diode (LED) luminaires, however, the primary focus has typically been on the lifetime of the LED die itself. Given that the LED luminaire is a system, it is important to recognize all aspects of the system that can affect or limit lifetime. Read more »

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