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Topic: LED projector bulbs ? on the way.
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Paul Browning
Phenomenal Film Handler
Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011
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posted December 23, 2017 05:18 AM
The problem with the led lamp of any kind is that you need a lens in front of it to focus all the output. There are plenty of variations out there that would be better in the colour range much whiter light output, including the excellent range by cree, but all need a lens, and it needs to be a bulls eye lens, fitting all that into the projector housing would be a task. You can fit an hid lamp into any projector no matter what the original wattage was, but it needs to be incorporated into the original reflector, and positioned correctly within the reflector to focus all the output on the gate, it can be done because I've done it, if you want to know more pm me, I can help you with some of the tricky stuff, these reflectors are glass and need to carefully cut, tricky task.
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Paul Browning
Phenomenal Film Handler
Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011
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posted December 23, 2017 06:55 AM
Hi mark HID, high intensity discharge lamp, same as the car type headlights, earlier version, same lamp BILL fits to the GS, but less wattage, 35 watts, not 150 watts. Its an arc lamp, using xenon gas, so burns brighter, much brighter than a filament lamp.
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Paul Browning
Phenomenal Film Handler
Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011
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posted December 23, 2017 10:36 AM
Which lamp are you referring to Tom ?, the led lamp needs a lens to focus it, you would need to incorporate this into the side housing, but would still get some heat, I don't think there is a warm up time for the led, but there will be for the HID to get to brightness, although the existing fan would probably be good enough to keep it cool. I don't know about the heating up of the gate Steve, but I'm sure your correct, would it be any less with led, I don't know, I just think it would a task to get something suitable for all machines, where as the HID route could be retro fitted to any projector......
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Bill Brandenstein
Phenomenal Film Handler
Posts: 1632
From: California
Registered: Aug 2007
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posted January 02, 2018 07:28 PM
Here's the full translation, guys. And forgive me for raining on the parade, but no additional light, a color temperature bluer than sunlight, and the high cost all make me want to run the other way.
quote:
Cineworld-Technik App
LED instead of halogen for the Elmo: the "200W Power LED Kit" is coming!
Patrick van Thielens’ semi-professional solutions regarding the "Elmo GS1200" film projector have been reported several times in Cine 8-16. The Tinkerer is currently dealing with a problem that will eventually confront all projectors' owners: replacing conventional halogen lamps with the new LED technology.
Text & photos: Patrick van Thielen
Composition: Dr. Arne Bernd, Uwe Brengel
The "200W Power LED Kit" Set consists of a power supply and a cooled LED lamp with 200W light output. In many Super 8 and 16mm film projectors, the often installed "cold light" halogen lamps can now be replaced by the almost completely "cold light" from LEDs. The figure shows one of the first types of the new set with the example of a "Elmo GS/ST1200" projector; the newer version now has a cold light mirror flange, so no conversion is required in the projector. The kit from the Netherlands does not intend to bring more light onto the screen than the original lamp. The power supply and LED lamp are tuned in such a way that a significantly higher efficiency of the lamp is achieved, but there is no more light on the wall than the original. However, due to the higher color temperature of 6,500 kelvin (compared to 3,400 kelvin of halogen lamps) The new version provides a much better and natural color rendition of the projected images. The more yellow-colored halogen lamps aren’t exactly created for realistic film images. The "Power LED" shows a projection size of one meter of natural images - snow is white, sky is already blue. It creates a full, "saturated" illumination at the right angle of projection. So there is no "hot spot" on the screen. The Power LED kit works completely independently of the film projector through the “Exteme” power supply. Therefore, the power supply of the LED does not take place via the projector, but directly externally. The connection of the LED is placed outward to the projector housing. A complete technical description would be beyond the scope of the article. However, it is safe to know that with some technical understanding, the film projector can also be retrofitted with the "Power LED kit" by unpracticed hands and a maximum of two hours of time.
"Power LED" is currently still in the experimental test phase, so it is still not for sale. Van Thielen hopes to be able to offer his conversion kit from 2018 in the newly planned online shop for film materials and technology. The price is then to move around 200 euros.
The latest version of the "Reelporter 2400ft" (see article in Cine 8-16 Edition 26) will also be available in the shop, which will then be in three different variants. In addition, new large film reels for Super 8 and 16mm are in development. As soon as the shop starts or the new offers are available for purchase, we will report it.
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