artificial light

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Judge
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Joined: Sat Dec 18, 2021 2:36 pm

artificial light

#1 Post by Judge » Wed Nov 30, 2022 12:45 am

I do my microscopy in a windowless room. Is there any artificial light (light bulbs) that simulates natural daylight?

Dennis
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Joined: Wed May 13, 2015 3:19 pm
Location: New Jersey, USA

Re: artificial light

#2 Post by Dennis » Wed Nov 30, 2022 5:19 am

Judge,

I just bought this for a microscope light-
Harbor Freight Tools 144 Lumen Ultra-Bright Portable LED Worklight/Flashlight
https://www.harborfreight.com/144-lumen ... 63878.html

They have other models also. I think some of the worklights/flashlights said the term "day light."

Maybe you just mean a general ceiling fixture light bulb or table top lamp light bulb-
They are making more and more better kinds which are like "day light." (They state it on the package.)
Go to any store from a hardware store to Walmart or Lowe's or Home Depot etc etc.

MichaelG.
Posts: 3970
Joined: Mon Apr 10, 2017 8:24 am
Location: North Wales

Re: artificial light

#3 Post by MichaelG. » Wed Nov 30, 2022 8:30 am

Judge wrote:
Wed Nov 30, 2022 12:45 am
I do my microscopy in a windowless room. Is there any artificial light (light bulbs) that simulates natural daylight?
.

The classic ‘simulation’ of natural daylight uses a normal Tungsten filament in a blue-filtered light bulb.

These are [were?] widely used by Artists and needle-workers
But the very laudable pursuit of energy-efficiency has effectively killed-them-off
[ the light bulbs that is ]

The mission to get full-spectrum from LED-based sources continues …
This page is worth a look: https://www.waveformlighting.com/color-matching

MichaelG.
Too many 'projects'

Chas
Posts: 421
Joined: Tue Jan 19, 2021 3:11 pm

Re: artificial light

#4 Post by Chas » Wed Nov 30, 2022 2:05 pm

I use an Ulanzi VL49 video light,
Ulanzi VL49 video light.jpg
Ulanzi VL49 video light.jpg (63.22 KiB) Viewed 2756 times
It is recharged via USB-C and lasts quite a few hours. The screen on the front is quite a good diffuser so I focus the condenser onto that.
I see that they make another model with an adjustable colour temperature and a more powerful battery, but this model seems OK to me.



This is it:
Ulanzi VL 49 amazon.jpg
Ulanzi VL 49 amazon.jpg (54.57 KiB) Viewed 2754 times
For microscopes with an angled eyepiece tube like a Lomo, I just plonk the light on the table. For tilting, horseshoe, stands I have a 'Smallrig 5 inch magic arm and clamp' and clamp the arm to the microscope tube and put the light on the end of the arm.

Perhaps, because it has a straight edge it seems quite easy to get oblique lighting using the curved side of the mirror.

Judge
Posts: 95
Joined: Sat Dec 18, 2021 2:36 pm

Re: artificial light

#5 Post by Judge » Wed Nov 30, 2022 3:52 pm

I apologize, I didn’t make myself clear. I don’t have a window sill to place my specimens on to get some light. I understand that there are special lights available for indoor plants. That might work.

Dennis
Posts: 672
Joined: Wed May 13, 2015 3:19 pm
Location: New Jersey, USA

Re: artificial light

#6 Post by Dennis » Wed Nov 30, 2022 4:37 pm

Judge,
I buy the "Daylight" type of light bulbs now for my table and ceiling lights (Lowe's or Home Depot)

You can buy for plants also "Grow Lights" Some are reg. and some are for the "flowering stage."
Interesting that stores carry them more with changing Marijuana laws.

Judge
Posts: 95
Joined: Sat Dec 18, 2021 2:36 pm

Re: artificial light

#7 Post by Judge » Sat Dec 03, 2022 4:33 pm

Thanks

BramHuntingNematodes
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Joined: Tue Jan 21, 2020 1:29 am
Location: Georgia, USA

Re: artificial light

#8 Post by BramHuntingNematodes » Sat Dec 03, 2022 6:33 pm

I would not use those same grow lights for observation, clearly.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

Dennis
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Joined: Wed May 13, 2015 3:19 pm
Location: New Jersey, USA

Re: artificial light

#9 Post by Dennis » Sun Dec 04, 2022 12:35 am

Oh I was just mentioning different new lighting.
He was saying he wanted light on his water sample cause no windows.
He just didn't want the water samples in the dark. Wanted "sun light" like lighting for the room not microscope.

AntoniScott
Posts: 108
Joined: Tue Dec 24, 2019 3:54 pm

Re: artificial light

#10 Post by AntoniScott » Sun Dec 04, 2022 4:41 pm

Daylight, meaning a cloudless blue sky with the sun unobscured, measures 5200 Kelvin. Depending on what artificial light you use, the color temperarure varies immensely and will require a filter
(usually a blue filter) to give an approximate and desired white light.

The old fashioned tungsten light bulbs gave out an orange light, fluorescent lights were on the green side. LED lights today are all over the scale, measures as "warm", to "cool", brightwhite, etc.

I'm assuming your microscope has a mirror rather than a built in illumination system, so you can select any of the above light sources and use a compesating filter available from AmScope or on Ebay.

Judge
Posts: 95
Joined: Sat Dec 18, 2021 2:36 pm

Re: artificial light

#11 Post by Judge » Sun Dec 04, 2022 7:49 pm

My microscope has a light not a mirror. My question is not about a microscope light. I’m interested in a light as a substitute for sunlight, not available in my work room, for my specimens.

GerryR
Posts: 183
Joined: Sun May 22, 2022 11:44 am
Location: Virginia, USA

Re: artificial light

#12 Post by GerryR » Tue Dec 06, 2022 6:30 pm

Judge wrote:
Sun Dec 04, 2022 7:49 pm
My microscope has a light not a mirror. My question is not about a microscope light. I’m interested in a light as a substitute for sunlight, not available in my work room, for my specimens.

Are you referring to something like this: https://www.ebay.com/itm/390738773518 (full spectrum light fixture for plants)?

Judge
Posts: 95
Joined: Sat Dec 18, 2021 2:36 pm

Re: artificial light

#13 Post by Judge » Tue Dec 06, 2022 9:31 pm

Too expensive. I ordered a $20.00 one. I'll let you know how I make out.

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