Film-Tech Forum ARCHIVE: Zeiss Lamps?

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Posted by Dave Bird (Member # 490) on 11-27-2000, 09:42 PM:

Anyone know anything about Zeiss lamps? I may have found a good deal on one (like free!), which I would use "recreationally"
here at home. It needs an igniter. Is that something I can still get, or is this a dead-duck? I remember this lamp in operation two years ago outdoors with either a 2 or 2.5K lamp I think. Thank you.

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Dave Bird

Posted by John Pytlak (Member # 331) on 11-28-2000, 06:19 AM:

Dave:

Is this the Zeiss Xenonsol III, that used the vertical lamp, auxillary mirror in front of the lamp, and the "honeycomb" condenser lenses? We used to have a pair at Kodak, but they were retired in 1972. I do recall that the University Theatre in Buffalo NY (on Main Street, across from the SUNY at Buffalo campus) had a pair in the early 70's as well.

The lamphouse is described in the paper "Xenon High-Pressure Lamps in Motion-Picture Theaters" by Heinz Ulffers, published in the June 1958 SMPTE Journal. Another paper was published in the July 1960 SMPTE Journal: "The Xenon Short-Arc Lamp in Motion-Picture Projection" by B. Seeger and W. Jaedicke.

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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com

Posted by Dave Bird (Member # 490) on 11-28-2000, 06:26 AM:

I'm not sure. I remember seeing it, and the cool looking Zeiss logo lit up on the back while in operation, but I don't know what model. I remember I couldn't believe it was a Xenon, it looks older, like an arc.

Posted by Gordon McLeod (Member # 33) on 11-28-2000, 08:29 AM:

The xensol III was 2.5K the Xensol II was 1.6K
The honeycomb is used ion the XensolII only the Xensol 3 had a heat filter in the snood
If lined up correctly they can produce a very flat field of light. But for quantity they are very lacking.
Also if the secondary mirror is misaligned you can cook a lamp (bang) instantly by focusing its entire energy back into the electrode or quartz wall

The ignitor was made by siemens and is not available. David did these come from Picton DI If so they originally came from one of the pods at ontario place

Posted by Dave Bird (Member # 490) on 11-28-2000, 01:06 PM:

Yes Gordon, not sure if there is more than one, but she served Picton well through the '99 season. They now have a Xenex I think at 3K????

PS- You probably heard, but a friend of the former owner tells me that Orillia was completely demolished last Monday or thereabouts. RIP

Posted by Francis Casey (Member # 514) on 11-28-2000, 10:53 PM:

John
You say "..Is this the Zeiss Xenonsol III, that used the vertical lamp, auxillary mirror in front of the lamp, and the "honeycomb" condenser lenses? We used to have a pair at Kodak, but they were retired in 1972...."
We have a pair still in use at a twin in Cornerbrook Newfoundland . Over the years the auxilary reflectors have gone and the internal fans have had to be replaced ; the ignitors have never given much problem only requiring the occasional new spark gap. The cinema has small screens and the light output is just barely acceptable .In the next couple of years we will probably be building a new multiplex to replace this ageing location .

Posted by John Pytlak (Member # 331) on 11-29-2000, 06:11 AM:

Francis: Those Zeiss lamphouses must be almost 40 years old! Most film projection equipment is like the "Energizer Bunny" --- It keeps on going and going and going...

Posted by Gordon McLeod (Member # 33) on 11-29-2000, 01:55 PM:

I somehow doubt that a DLP will last that long
we have them in several toronto theatres the royal in the warehouse pictures shows it

Posted by Stefan Scholz (Member # 147) on 11-30-2000, 11:12 AM:

"The igniter is a standard Siemens" is true. It can be replaced mechanically with any type found in modern equipment, as it was bigger than the followups. Units from Bauch Berlin (Kinotone), Irem or any other brand will do.
On the other hand ... a tesla coil made of ferrite and HV insulated wire , HV starter transformer from oilburners, a standard spark gap and a 1000pF 15kV capacitor is all you need to build your own igniter... which works in home installations. But careful, you're dealing with HI VOLTS. (Instructions available from a friend of mine on request, and no liability taken...)