Wow, this is really weird, looking up pics of the Christie HD20KJ made me remember these pictures of projector lamp replacements many years ago…
And the front reflector is spherical…literally exactly like a wavien collar.
How did I not realize this earlier! These are just wavien collars but with a different name
Is it a single piece of glass?
All the pictures I can find make it seem like two separate ones, I don’t know how it would be possible to manufacture it as a whole piece.
If the spherical part can be separated from the ellipsoidal part, I will definitely pay for the shipping costs
Thanks for the offer!
Impressive equipment. 16.000 lumen is not far from what leds can do nowadays but I guess that the short arc emitting volume is much smaller than a high power led.
A very nice find indeed! And yes, it’s very dangerous to handle these without proper protective clothing! Not all HID bulbs are under pressure when not in operation, but Xenon short-arcs are.
The power supplies are so heavy because Xenon short-arc bulbs are operated at very low voltages. The thus very high currents (hundreds of amps) leads to large component sizes and thus wheight.
I don’t think that it’s possible to use this in a portable, self-contained light. It also wouldn’t be cost effektive to design a light using this. Skybeamers with these kinds of wattages can be had for around 2K-5k$ from China.
I think you would be best advised to sell it. For 800$ you could easily find a Maxabeam!
The term “waiven collar” should be purged from the collective vocabulary, or at least not used out of context. All a “waiven collar” is is a SPHERICAL REFLECTOR, or SPHERICAL MIRROR, which has been studied since at least the time of Ptolemy, 2nd century AD, if not before. Their patent applied to putting one over an LED, which has a specific effect. A spherical reflector is easy to make with conventional machinery using a ball endmill, and of course can also be purchased from an optics manufacturer.
—-Later in the day Edit:
Uh, where to begin… my above post, firstly, is a non sequitur. Also, the use of the term waiven collar in this thread was in consideration of the effect rather than the geometry, which apparently went over my head. Thirdly, I too agree that the effect of the device is not novel, from since a few years ago when MEM talked about the effect of the device and how its not novel, yet by mentioning their patent as being related to the effect I give credence to it…. And fourthly, a waiven collar, and also it seems the spherical portion of the projector reflector in this thread, is not just some home made optic, or even an electroformed spherical reflector, but a very precise spherical reflector made from glass. Catharsis! Ahh, the forums are good for me, haha.
Putting it over the LED has the same effect as putting it over an arc lamp.
IMO they shouldn’t have been granted that patent because it’s not novel.
These projectors existed long before wavien applied for patent.
Recently I have been asking around to see what price optics companies would charge for a custom sized spherical reflector and it’s been really expensive, $1000+, so if I can get one from a projector that would be awesome.
That looks awesome!
The 2500W XBO bulb does 100k lumens
Yeah it’s definitely not possible to make a flashlight out of this, even my 4 lipo batteries would only last 6 minutes running this thing, if it was even possible to power with batteries.
If I were to use it it would be for a static searchlight/ sky beam, but I’m not going to spend $10k for a 2500w xenon ballast
Ok, that bulb is cool and all, and I’m curious to see what you end up doing with it, but could you back up to the part where you found it at an abandoned theater? Abandoned as in nobody was there since it was after closing or overgrown with vines in the woods abandoned?
Haha abandoned as in it hasn’t been open for years, the interior is half destroyed, thick layer of dust on everything, any valuables already stolen.
I guess nobody found the bulbs which were at the top of a cabinet, or knew their value.
Was really cool exploring in it with a flashlight in the middle of the night
I ran movie theatres in Miami for 7 years, 5 as a general manager who was trained in installing Xenon bulbs.
That’s about a $500-$600 bulb in ’95-’02 dollars.
Be aware that it’s leaded crystal and it’s pressurized, so if it pops and you’re not wearing a welder’s mask, flak jacket and gloves, the surgeons are going to have a hard time picking the shards out of your face because leaded crystal doesn’t show up on X-Rays, or at least that’s what the experts told ‘us’.
Best thing to do is to contact a local theatre, offer to let them test it with a union projectionist and offer it to them at* a good price.
Yes, I think there is enough room (the actually put a spring between the led and the “driver” pcb, so that gives you maybe 5-7mm of height). The diameter would need to be quite small though.