DPR Short Arc Projection Brightness Enhancement

 Dual Parabolic Reflector Technology

Our DPR™ technology dramatically increases lamp life when integrated into light engines with micro-display chips for DLP, LCOS, and HTPS, resulting in superior performance.

Dual Parabolic Reflector Technology vs. Existing technology

The patented Dual Parabolic Reflector (DPR™) platform dramatically increases output and useful lamp life compared to elliptical lamp optics. The unique 1:1 arc imaging of  DPR preserves brightness with high efficiency and low etendue ranges, making this illumination system a perfect answer for the micro display projection industry.

With power ranging from as low as 25 W to as high as 5 KW, the DPR® lamp platform extends lamp life by reducing the system sensitivity to arc gap expansion wear over the lamp life.

DRP Advantage: Extends Lamp Life for Cinema and Desktop Projectors

The DPR reflectors system extends the lifetime of standard ultra-high pressure mercury lamps for desktop projector applications.  An extension factor of 3X to 5X is achievable using standard off-the-shelf projector lamps.  The system is suitable for use with DLP, LCOS, 3LCD, and SXRD imaging panel technology.

DPR system for digital cinema – Scaling up the DPR system in size to accommodate the multi-kilowatt xenon system, the system can be used for digital cinema using a single DPR reflector or using a dual DPR reflector system for further increase in output.  The DPR illumination system is being developed and Wavien is actively soliciting partners for full demonstration of the system.

The Science-Why use DPR?

-Assume an arc length of 1 mm with width of 0.5 mm
-Assume NA of 1.0 and 0.7 in the X and Y directions
-Etendue in one direction is Pi*1*0.5*1*0.7 = 1.10
-Total Etendue of the arc in both direction = 2.20
-Etendue of the arc is much smaller than most applications
-Standard Reflectors – Low efficiency is due to aberrations, which increases (DEGRADES) the etendue of the arc
DPR – Corrects aberrations from the 1st reflector by the 2nd reflector, thus PRESERVE the etendue of the arc.