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Hamamatsu Corp. - Mid-Infrared LED 11/24 LB

The Etendue Mystery Revealed

Nov 28, 2023
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About This Webinar
In optical design for illumination, some key questions need to be answered early on in a project, such as: “Which size LED should be used to create a beam with a given optics size and beam angle?” Along with the questions, "How large an aperture is needed to create a 100,000 candela beam using a given LED?” and “Which LED is better suited for a task from a fundamental optical standpoint?” To give these answers with confidence, designers must understand etendue, which is the size or extent of a beam of light. Etendue is the most important and fundamental quantity in illumination optics while simultaneously the most mysterious, misunderstood, and misused quantity. This is because, under certain conditions, etendue follows a conservation law. Similar to all conservation laws, understanding etendue provides great insight into what can be achieved with illumination optics. The confusion instead comes from understanding under what conditions etendue follows this conservation law. In this presentation, Julius Muschaweck explains what etendue is, exactly when etendue is conserved, as well as how etendue can help to assess feasibility and guide the optical designer toward finding effective optical solutions.

Who should attend:
Designers, engineers, manufacturers, and researchers who work with optical design for illumination applications. Those who are interested in learning more about etendue and optics. Professionals who design, build, test, or use optical systems for markets spanning from defense and aerospace to quantum computing and communications and medical applications.

About the presenter:
Julius Muschaweck, a German physicist, has been working on optical design for illumination for over 25 years. After a stay as visiting scholar at the University of Chicago with Professor Roland Winston, well known as the originator of Nonimaging Optics, for research on concentrating sunlight, he cofounded and became CEO of OEC. OEC was a unique illumination optics research institute plus optical engineering service that pioneered tailoring freeform optics for illumination. Later, at OSRAM, the LED maker, where he held the position of senior principal key expert, the highest rank in the Siemens/OSRAM expert career, he coordinated over 100 optical designers within OSRAM worldwide. He then joined ARRI, the leading movie camera and lamp head maker, as principal optical scientist. Muschaweck now works as an independent consultant and author, providing illumination optics solutions to industry clients, teaching courses on illumination optics, and writing about the subject. He is the author of over 25 scientific papers as well as a SPIE tutorial book, Designing Illumination Optics, and the inventor of over 50 patent applications. He also loves to go hiking and camping with his wife and their dog. You can learn more about etendue and illumination optics at his website: https://www.jmoptics.de.

Research & TechnologyImagingLEDsLight SourcesOLEDsOptics
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