Abstract
AbstractIt has long been demonstrated that, besides extending the life time of UHP lamps, the Wavien patented dual paraboloid reflector DPR can also enhance the lamp brightness in the low etendue regime. As a follow‐up to our previous work we examine the possibility of extending the same DPR advantages to xenon arc lamps used in digital cinema. With ray tracing, we calculate the throughput efficiencies of a standard compound elliptical reflector used in the industry and a DPR reflector of similar size at various etendue values. The resultant efficiency/etendue curves are plotted and it is shown that, at a typical etendue value of 50 mm2*steradian for digital cinema up to 100% brightness improvement can be achieved. Another unique feature of the DPR system is that light recycling can be realized through etendue reduction by a recycling light pipe. Up to 40% recycling gain has been demonstrated with a 1:4 input/output etendue ratio. In addition, it is expected that the lifetime xenon lamps with the DPR can also be extended.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
