<div dir="ltr"><div>Alec, on the work we did on the 5000 lumen LED, you had to be very careful that you designed heat sinks in the housing to dissipate heat or the manufacture solder joint would fail. The 5000 lumen Vero 18 has a diameter of 3.6 cm. The Vero 29, is 4.9 cm or only about 40% larger. My major concern on packaging 4 of these little beast in one housing is that it is going to pull quite a bit of power and generate a lot of heat to dissipate. Even though you would save money on connectors as you say, I would like to see us stick with one Vero 29 arrays per housing to make it easier to deal with the heat and keep from drawing so much current. Also with the smaller housing, if we limit the max depth of say 1000 fsw, it would be easy to handle the pressure with a 1-atm housing. Also if we stick with one Vero 29 array per light, we can design the light so that it won't have be submerged to operate.</div><div><br></div><div>The 5000 lumen light I have will blind you. Can't imagine what a 10,000 lumen version would be like let alone a 40,000 lumen light!</div><div><br></div><div>Not locked to anything at this point. </div><div><br></div><div>Cliff </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 21, 2015 at 8:59 PM, Alec Smyth via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I was not familiar with the Vero 29 but just looked it up and I see it's under 5cm in diameter and less than 2mm thick! Wow, that means we're talking about a really small little device despite the hefty lumens output. Since the packaging is so small, and given the current draw is about 4 amps... do you guys think it might be worth making an array of four of these Vero 29s into each light? The cost of machining would likely not be that much more, and the cost of the Subconn connector identical, so it might be quite a bit more economical per lumen to go with a little array of four. It would be a ridiculous number of lumens, ridiculous is good in this case and we're still at a size that would fit very easily on any sub.<div><br></div><div>A first stab at housing decisions, not very premeditated:</div><div><br></div><div>- Oil filled, so that depth rating is immaterial. In my case I would need it to go to 1000 feet, or more if I wanted it to go on the sub during a depth test.</div><div>- Aluminum housing, for ease of machining and corrosion resistance. </div><div>- Flexible plastic lens, to act as a compensation bladder for thermal expansion.</div><div>- Subconn connector, not because you need the pressure rating but because it will keep the oil in reliably!</div><div><br></div><div>Just some initial ideas, I don't own the truth.</div><div><br></div><div><br></div><div>Best,</div><div><br>Alec</div><div> </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 21, 2015 at 8:34 PM, Clifford Redus via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div>Ken/Alan/Alec/Jon </div><div><br></div><div>More Thoughts</div><div><br></div><div>After Jon sets up a place were we can collaborate and share files, if it would be helpful, I could post the drawings I have for 5000 lumen flat body 1-atm LED light and a short video of the 5000 lumen LED in operation. My thinking is in order to fast track the project we could take this design as a starting point and just geometrically scale up the housing just large enough to fit 10000 lumen Bridgelux Vero 29 and its support base. Should be plenty of room for a larger diameter PCB that Ken can design. We should be able to use the same Subconn MCBH-3MP connector. We get a good discount on Subconn connectors through Psubs. This design uses a hard anodized 6061-T6 for the housing and a 3/8" borosilicate glass for the lens. The lens was an OTS item from McMaster Carr. This design did not have a reflector but it would be easy to incorporate after we settle on beam angle. </div><div><br></div><div>To me, the key is to work as group on the draft spec that Ken comes up with. From the housing perspective, the key items the spec needs to call out are :</div><div><br></div><div>1) design depth, </div><div>2) 1-atm vs oil pressure compensated, </div><div>3) housing material </div><div>4) type of electrical penetrator </div><div><br></div><div> I have Autodesk Inventor Professional loaded on my PC. Using feedback from the group I can use Inventor to generate fabrication drawings an do the FEA work. After we freeze the design, we take Alec up on his offer to machine the housing. If for any reason, he can't , I can use the machine shop I work with to machine the housing. After we have the prototype, I can test it in my test chamber. For those that don't have Inventor, Autodesk has a nice 3-D viewing software that the team should be able to download for free and to view and critique design iterations.</div><div><br></div><div><br>Cliff</div><div><br></div><font face="CenturyGothic" size="4"><p><br></p><font face="CenturyGothic" size="4"><p><br></p><div> </div></font></font><font face="CenturyGothic" size="4"><font face="CenturyGothic" size="4"><p> </p></font></font> </div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 21, 2015 at 6:15 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div><div style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px;background-color:rgb(255,255,255)"><div><span>Hi Ken,</span></div><div dir="ltr"><span>a few thoughts once you have settled on the </span></div><div dir="ltr"><span>electronics are.....</span></div><div dir="ltr"><span>Do we want a hard anodized aluminium housing?</span></div><div dir="ltr"><span>Do we want the housing oil filled?</span></div><div dir="ltr"><span>What sealing configuration do we want?</span></div><div dir="ltr"><span>What beam angle do we want?</span></div><div dir="ltr"><span>What sort of reflector?</span></div><div dir="ltr"><span>What sort of lense?</span></div><div dir="ltr">How are we going to seal the cable coming in to the housing?</div><div dir="ltr"> Some of these answers may be dictated by what is available off</div><div dir="ltr">the shelf at a reasonable price.</div><div dir="ltr">Cheers Alan</div><div dir="ltr"><br></div><br> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold">From:</span></b> Ken Martindale via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br> <b><span style="font-weight:bold">To:</span></b> 'Personal Submersibles General Discussion' <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br> <b><span style="font-weight:bold">Sent:</span></b> Wednesday, July 22, 2015 5:16 AM<br> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] LED Lights<br> </font> </div> <div><br><div><div><div><div><span style="font-size:11pt">The electronics and custom PWB won’t be the issue. Figuring out what we want may be the biggest problem.</span></div><div><span style="font-size:11pt"> </span></div><div><span style="font-size:11pt">Ken</span></div><div><span style="font-size:11pt"> </span></div><div><br><br></div><div><div><b><span style="font-size:11pt">From:</span></b><span style="font-size:11pt"> Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Clifford Redus via Personal_Submersibles<br clear="none"><b>Sent:</b> Thursday, July 16, 2015 3:52 PM<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span></div><div> </div><div>Alan, we have a lot of collective experience we could use on the project. I really love the fact that Ken is an EE with experience LED drivers. After we agree on specs and packaging I am sure he can design a custom PCB for the electronics. Having just gone through the exercise of designing a 1-arm housing, I don't think it will be difficult to design the housing.<br clear="none"><br clear="none">Cliff<br clear="none">On Thursday, July 16, 2015, Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>> wrote:</div><blockquote style="border-width:medium medium medium 1pt;border-style:none none none solid;border-color:currentColor currentColor currentColor rgb(204,204,204);padding:0in 0in 0in 6pt;margin-right:0in;margin-left:4.8pt"><div><div><div><div style="background:white"><span>Cliff,</span></div></div><div><div style="background:white"><span>I'm on board with the LED light project.</span></div></div><div><div style="background:white"><span>Have done a bit of experimentation & bought about 10 different LED</span></div></div><div><div style="background:white"><span>flashlights, underwater flashlights, flood lights & various lenses.</span></div></div><div><div style="background:white"><span>I also have a friend whose working involves running banks of LED</span></div></div><div><div style="background:white"><span>lights on advertising hordings, if we get stuck on the technical side.</span></div></div><div><div style="background:white"><span>Alan</span></div></div><div style="background:white"><span> </span></div><div><div><div><div align="center" style="background:white;text-align:center"><span></span><hr width="100%" size="1" align="center"></div><div style="background:white"><b><span style="font-size:10pt">From:</span></b><span style="font-size:10pt"> Clifford Redus via Personal_Submersibles <<a rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Friday, July 17, 2015 2:15 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span><span></span></div></div><div><div style="background:white"><span> </span></div><div><div><div><div style="background:white"><span>Ken, I have been off the list for some time due to work and due to my email service not passing through psub emails. I had to go to a gmail email account to get back in the loop.</span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span>I am in on your suggestion to build LED psub light based on the Bridgelux Varo 29 (BXRC-50C 10K0-L-24) . I can help on the housing design and I have access to a machine shop to fabricate the housing. I also have test chamber we can use to qualify the prototype. Maybe we could pick one of the DeepSea Power and light LEDs take its specifications and tweak to fit a typical psubs application. </span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span>We would probably need to set up something like Dropbox location, accessible to all that want to participate in the design, fabrication and testing to keep from swamping the PSUB list.</span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span>I have a function LED subsea light that works fine but would like more lumens. It is a 5000 lumen light but would like a 10,000 lumen light.</span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span>My suggestion is for you take the point since you came up with idea. Maybe we could canvas the site and see would be interested in working on the project as a first step. Given your background in EE, maybe you could come up with a first pass at the specification and we can comment on it.</span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span>Cliff</span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span> </span></div></div><div><div style="background:white"><span> </span></div></div></div></div><div style="background:white;margin-bottom:12pt"><span><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"><br clear="none"></span></div></div></div></div></div></div></blockquote></div></div></div></div><br><div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" shape="rect">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div><br>_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
<br></blockquote></div><br></div>
</div></div><br>_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
<br></blockquote></div><br></div>
<br>_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
<br></blockquote></div><br></div>