Electronics > Beginners

Lab lights, how much are you happy with lights in your lab

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sairfan1:
Recently i start feeling pain in my eyes specially when i sit on computer and work, I recently moved to a new house where i have energy savers installed,  it looks me like the reason is energy savers, some of my friends says they are not good in such environment i also saw some debates on internet regarding LED lights and energy savers.

Previously i had tube lights in my lab and i never had any issue, I'm thinking to change lights in my lab but before getting started i thought lets discuss with you guys' experience. 

what do you use for light in your lab, any good ideas to share, thanks.

floobydust:
LED lighting is shit for task lighting. I haven't yet found something that works as good as incandescent.
Why? Newer is better?

It has to do with how the eye micro-focuses and locates, apparently warm-white LED's are better as there is more red in the spectrum that the eye needs for its servo systems.

I just got some 10W LED's from china and their light looks so bad, yellow fringing and I can't see anything well under them. It can be super bright but that means nothing.
It's the phosphor recipe I am noticing makes a huge difference. All the peaks in spectral output seem to clash with what the eye needs.
Next I'm going to try Cree or Bridgelux LED's and see how they do.

rstofer:
You want to get lamps with a Color Rendering Index up in the 90s.  An incandescent is 100 and is the baseline for all color rendition measurements.

richnormand:
Also be careful with LED conversion for your lab, thre are other points to consider too.

I changed several fluorescent tubes for LED conversion (not over the bench). Noticed a high noise floor on the spectrum analyser while reading a weak signal. Fired up the SDR and there was interference all the way to more than 150MHz.
The AM band was totally unusable, even for local station.
Used ferrite rings, grounded each light frame, capacitors, shielded chokes, etc... All helped a little but I ended up going back to the old tubes.

May not matter much for the average user, but in a lab setting it might ruin your day. Some DC converters for LEDs are really noisy. >:D

For the bench I have some Phillips floods with CRI about 90. Seems to be OK. For the 3D microscope I went more blueish and bright as it helps resolution quite a bit, compared to tungsten illumination.

3roomlab:

--- Quote from: sairfan1 on May 03, 2019, 09:07:50 pm ---Recently i start feeling pain in my eyes specially when i sit on computer and work, I recently moved to a new house where i have energy savers installed,  it looks me like the reason is energy savers, some of my friends says they are not good in such environment i also saw some debates on internet regarding LED lights and energy savers.

Previously i had tube lights in my lab and i never had any issue, I'm thinking to change lights in my lab but before getting started i thought lets discuss with you guys' experience. 

what do you use for light in your lab, any good ideas to share, thanks.

--- End quote ---

are they point source or difused?
I think point sourced are generally problematic for eyes and looking at things long term.

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