[PSUBS-MAILIST] LED Lights

[Alan James via Personal_Submersibles]

Cliff,in everything I have read, the flood light seems the prefered option.Except in cave diving where a narrower beam is handy for finding the way out.Nuytco sells a 120 degree beam light.For night time surface operation a narrower beam like car headlightswould be better. Some dive lights come with sleeves that are pulled out tonarrow down the beam which comes in handy for spotting things or signaling divers. If you are wanting that lower profile then we can set up for wide beam &have a narrow reflector as a retro fit for surface lights or people who preferthe narrow beam. A lot of the reflectors are polished aluminium, so machiningup an insert wouldn't take long. Or for the wide angle just machine the reflector angle in to the housing & polish it. We may find one to fit on "Deal Extreme''http://www.dx.com/s/reflector  (regarded as the Holy Grail of lighting)
or one that just needs a bit of machining.At the moment I am thinking 2 wide beam 10,000 lm at the front, 1 spot lighthigher & central for surface & underwater use with the 5000 lm option beinghandy for out of water & two wide beam side lights at 5000 lm.Cheers Alan



      From: Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Monday, July 27, 2015 8:28 AM
 Subject: Re: [PSUBS-MAILIST] LED Lights
   
For anyone that has a large LED or halogens on their boat, can you share your experience on narrow beam vs flood lights.   Building a LED housing to be low profile to fit in a FRP recess is going to be difficult with a reflector to get a narrow beam.  As an example, a typical reflector size for a Vero 29 is 110mm (4.33") diameter and 67mm (2.64") deep.  This is massive and you still need housing and heat sink fins.
I am wonder if we really need a focused light or is a flood light adequate?
Cliff
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