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VU1 Size comparison

VU1 Size comparison

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Showing the size difference between the VU1 and an A19 LED (Philips Hue) lamp. The VU1 is very heavy and really *feels* like a CRT (which it is) - a very heavy 'yoke' in the back and the glass envelope is very thick too, presumably to support a high vacuum.

vu1-2.png vu1-3.png vu1-turnon-opt3.gif vu1-sizecompare.png

Light Information

Light Information

Manufacturer:VU1
Model Reference:R30
Lamp
Lamp Type:BR30
Filament/Radiator Type:N/A (ESL - Cathode Ray)
Base:Edison Screw
Shape/Finish:BR30
Service Life:11000h
Fixture
Fixture Type:N/A
Ballast Type:Self
Socket Type:N/A
Arm Type:N/A
Electrical
Wattage:19.5
Voltage:120
Current:163mA
Optical
Lumen Output:500
Lumen Efficacy:25lm/wt
Color Temperature:3000K
Color Rendering Index:90
Physical/Production
Dimensions:6 in x 4 in
Factory Location:China
Fabrication Date:2015
Application/Use:Downlight

File information

File information

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Filename:vu1-sizecompare.png
Album name:michilumin / Modern / HighEfficiency lighting
Keywords:Lamps
File Size:1620 KB
Date added:Apr 02, 2015
Dimensions:1208 x 895 pixels
Displayed:96 times
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don93s
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Apr 02, 2015 at 07:10 PM Author: don93s
So, I guess these are only marginally more efficient than a quality halogen incandescent? But, being mercury free, long life and high CRI would be an advantage if purchase cost isn't too high. I'm curious to see if these can improve in efficacy eventually.
michilumin
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current+voltage=photons


michilumin michilumin
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Apr 02, 2015 at 07:25 PM Author: michilumin
Yeah, the efficacy wasn't impressive but honestly, the technology approach was interesting, so I had to get a few. I know I'm not the first on the forum to grab one, but wanted to show as much detail as I could. Same "bright white" color temp that a halogen may give, as well - in fact some stores have categorized them along with other halogens due to their efficacy and color temp. These were about $14 - note that one I got exhibited "zapping and arcing", so there's definitely a true CRT HV element here. (The other was fine) ... With the HV element, and the fact that CRTs just generally don't like to be left on for a very very long time, to me the lifespan is gonna be interesting. A lot of folks are saying these will die a quick death on the market, but as you said there are some advantages, and if they can increase light output and efficacy while keeping costs down, it'll be kinda cool to see what they do with the phosphors. Had to get some for my collection anyhow.
don93s
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Apr 02, 2015 at 07:43 PM Author: don93s
Yeah have to admit, a very fascinating idea for a lamp. I'd get one just to see how well it does and if nothing else, the novelty.
Flurofan96
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Apr 03, 2015 at 01:59 AM Author: Flurofan96
Really fascinating bulb. I find this, along with induction lamps, to be the best efficient newest lighting source which is an alternative to LED

I will give LEDisease a taste of my shoe

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