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Author Topic: Single LED for reverse scan? Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 05-23-2007 09:27 AM                     I've recently aquired a Luxeon 1 watt LED with a collimating lens attached. This fellow is BRIGHT and the 10 degree beam looks to have a fairly constant brightness gradient. The Dolby reverse scan LED linear array was designed before such high power/brightness LEDs existed. The Luxeon light output sure looks more than sufficient (800+ cd on axis) although some sort of elliptical lens to shape the beam may be required The module with optics cost me $15.00... compare that to a new LED array from Dolby. Is anyone working on a professional reverse scan system using a single LED? I know some folks here are doing home projects, but is there a product in development for general sale?  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 05-23-2007 09:44 AM                     There are companies in Spain and Germany using the Luxeon set with great results....there is now also a 3 watt unit.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-23-2007 05:56 PM                     FWIW... Sony used a similar LED to the 1 watt luxeon on the 3000 penthouse. They last a VERY long time. Mark  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 05-23-2007 06:01 PM                     A standard intensity LED should last indefinitely. Good quality high intensity LEDs (such as the ones we use in outdoor LED-based variable message centers) are rated for 100,000 hours of constant, full-on use. That's equivalent to leaving the LED at 100% power for about 11.5 years.  |  IP: Logged

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