Sustaining Member Mark Kenfield Posted July 18, 2016 Sustaining Member Share Posted July 18, 2016 Hi guys, I saw the press release for these a while back, back haven't really heard anything more since. These new Osram UV Stop ("UVS") HMI bulbs apparently eliminate 99.9% of UV radiation at the bulb itself. That's a pretty big deal, as it should allow us to remove the UV-protection glass from existing HMI heads, increasing total light output and decreasing the weight of the fixtures. Has anyone tried them yet? Can anyone offer up any thoughts?I'm pretty keen to try pairing their 1800w version with an M18, and seeing what I gain (lumen-wise) by running the UV protected bulbs, and removing the UV protective glass. Is this workable? Or will the sensors in the HMI simply not allow the unit to turn on if they detect that the UV glass isn't in place? Cheers, Mark Quote Link to comment Share on other sites More sharing options...
Guy Holt Posted July 18, 2016 Share Posted July 18, 2016 Without the glass the safety switch will not allow the head to be struck. I really doubt appreciable lumens are being lost to the glass. Wether the filtration occurs in the quartz envelope of the globe or protective glass of the head, the light loss of that part of the spectrum remains the same. Guy Holt, Gaffer ScreenLight & Grip Lighting Rental & Sales in Boston Quote Link to comment Share on other sites More sharing options...
Matthew Parnell Posted July 19, 2016 Share Posted July 19, 2016 It's important to note that the safety glass doesn't only perform the function of UV filtration, but also acts as containment in the instance of catastrophic globe failure. Quote Link to comment Share on other sites More sharing options...
Sustaining Member Phil Rhodes Posted July 19, 2016 Sustaining Member Share Posted July 19, 2016 You took the words out of my mouth. In any case, I wouldn't trust the UV stop layer. It's insurance, an added safety factor. P Quote Link to comment Share on other sites More sharing options...
Sustaining Member Mark Kenfield Posted July 19, 2016 Author Sustaining Member Share Posted July 19, 2016 Thanks guys, I figured as much :/ damned safety buzzkills. Talent are always complaining about the cameras and lenses being too sharp these days - but try and simply melt their faces down a little with radiation to soften the appearance of their skin and everyone gets up in arms about it... Quote Link to comment Share on other sites More sharing options...
Michael DeStefano Posted July 21, 2016 Share Posted July 21, 2016 (edited) What's cool is that they have a 1800w HMI globe that is tungsten. Its imbedded into the glass of the globe! Edited July 21, 2016 by Michael DeStefano Quote Link to comment Share on other sites More sharing options...
Sustaining Member Mark Kenfield Posted July 22, 2016 Author Sustaining Member Share Posted July 22, 2016 What's cool is that they have a 1800w HMI globe that is tungsten. Its imbedded into the glass of the globe! Could you share a link to that Michael? That would be a super-helpful bulb to have, but I can't find anything about it on google. Quote Link to comment Share on other sites More sharing options...
Michael DeStefano Posted July 22, 2016 Share Posted July 22, 2016 Just checked the web site and it's not listed yet. We had one in our 800w boxer at Cine Gear Expo and heard that they we be making them in larger wattage. Quote Link to comment Share on other sites More sharing options...
Sustaining Member Mark Kenfield Posted July 22, 2016 Author Sustaining Member Share Posted July 22, 2016 Whose website? Osram? Phillips? Any word on the output of the bulbs relative to conventional 6000k ones? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.