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UVA pumped LEDs? |
Laurens |
12 |
2403 |
June 06, 2026, 10:05:01 AM
by Lipstickquid |
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Why Na-Sc chemistry causes fast lumen depreciation? |
dor123 |
12 |
812 |
June 01, 2026, 03:57:41 PM
by James |
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Did Philips shutdown Polish plants ? |
Jovan |
6 |
809 |
May 29, 2026, 09:14:20 PM
by Silverliner |
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Are Sylvania Relumina really have lanthanum? |
dor123 |
3 |
418 |
May 27, 2026, 07:00:39 AM
by James |
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What is the first screw-in LED bulb you’ve ever seen in your life? |
Lightingeye60 |
1 |
591 |
May 23, 2026, 01:11:54 PM
by James |
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Why don’t CFLs look like linear fluorescents? |
Lightingeye60 |
4 |
2591 |
May 18, 2026, 12:45:12 PM
by WorldwideHIDCollectorUSA |
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Interesting Mitsubishi Lighting Technical Document from 1983 |
WorldwideHIDCollectorUSA |
0 |
449 |
May 15, 2026, 12:10:49 AM
by WorldwideHIDCollectorUSA |
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Would it be possible to make a F40T10 using a xenon fill for preheat/rapidstart? |
F40 |
0 |
590 |
May 13, 2026, 10:42:55 PM
by F40 |
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Have you’ve had an LED bulb go purple? |
Lightingeye60 |
3 |
4364 |
May 06, 2026, 02:37:02 PM
by Lightingeye60 |
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What are the common failure modes of SOX lamps? |
HPS4Ever425120 |
5 |
11470 |
May 06, 2026, 07:15:58 AM
by dor123 |
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GE light bulb updates |
Cole D. |
1 |
4798 |
May 05, 2026, 07:48:00 PM
by Lightingeye60 |
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Why do metal halide bulbs color shift to different colors at the end of life? |
Lightingeye60 |
1 |
546 |
May 05, 2026, 05:21:49 PM
by RRK |
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When was this non-Alto made? |
Emersyn |
14 |
74127 |
May 05, 2026, 09:47:54 AM
by Lightingeye60 |
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Specifications for Korean lamps and ballasts |
WorldwideHIDCollectorUSA |
0 |
472 |
May 04, 2026, 10:30:27 PM
by WorldwideHIDCollectorUSA |
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National/Panasonic lighting equipment catalogs for Japanese market |
WorldwideHIDCollectorUSA |
2 |
3890 |
May 03, 2026, 07:36:37 PM
by WorldwideHIDCollectorUSA |
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Non-Cycling HPS Lamps / types of HPS |
Multisubject |
6 |
36974 |
April 26, 2026, 11:21:26 AM
by WorldwideHIDCollectorUSA |
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Retrofit sodium lamp questions... |
Multisubject |
13 |
8103 |
April 23, 2026, 09:04:55 PM
by Multisubject |
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Why Orange MH lamps don't contains tin halide |
dor123 |
2 |
26415 |
April 21, 2026, 03:28:53 AM
by dor123 |
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Eu:YPV in triphosphors fluorescents and CFLs instead of Eu:YOX |
dor123 |
1 |
28272 |
April 18, 2026, 02:41:01 AM
by RRK |
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Philips lamps rebranded as Ecolink |
LightsAreBright27 |
1 |
2774 |
April 17, 2026, 11:36:18 AM
by Emersyn |
