Energy efficient laser enhancement of stage spotlights: Final report - EUDP

Research output: Book/ReportReportResearchpeer-review

Abstract

The project objective is to bring novel energy efficient laser lighting technology to the entertainment lighting industry by developing and demonstrating two new types of laser based light sources with the goal to replace high power discharge lamps in spot lamps. Development of new phosphor materials and high-power laser diode systems have led to four prototypes and demonstrators of laser lighting. Single point LS with extreme high luminous intensity of 25 mio. cd have been demonstrated and a very high flux unit has been designed and tested. A new LiV8 color changeable light source for optimization of color quality of laser lighting has demonstrated white light from 3500 to 5000 K with color rendering index of 80. High flux of 16000 lm, and very high luminance of 2130 cd/mm2 was demonstrated, exceeding LED technology by 20x. A novel Active Color Management Technology (ACMT) has been developed for color tunable light sources. The project has resulted in extensive collaboration on phosphor materials and characterization with Henan Polytechnic University and on laser lighting with University of Toulouse. Collaboration with two internationally leading manufacturers of laser diodes has been established and a signed agreement for use of laser diodes in entertainment lighting is an important result. The results have been disseminated through 7 scientific articles and 12 presentations at seminars and conferences, 3 articles for Danish industry, 2 invited lectures on laser lighting and arrangement of 3 seminars and demonstrations. The results are already used through implementation of the ACMT system in current lighting products, for luminance calibration and will be utilized by bringing new laser white light sources on the entertainment lighting market. Further research in phosphor materials and laser lighting systems will be needed for the energy efficient replacement of high-power discharge lamps. The established collaborations in the project have paved the way for this.
Original languageEnglish
PublisherDet Energiteknologiske Udviklings- og Demonstrationsprogram
Number of pages35
Publication statusPublished - 2021

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