Greater Brightness

Here you can discuss different microscopic techniques and illumination methods, such as Brightfield, Darkfield, Phase Contrast, DIC, Oblique illumination, etc.
Post Reply
Message
Author
Greg Howald
Posts: 1185
Joined: Tue Oct 20, 2020 6:44 am

Greater Brightness

#1 Post by Greg Howald » Thu Jul 08, 2021 2:56 pm

Two of my scopes just weren't as bright as I would like them to be. I replaced the thick diffusers with thinner material. The result was good diffusion and a much brighter experience. Do not do this with 6 volt 30 watt of 12volt 20 watt bulbs if you use plastic to do this as it will get too hot and cause a melt down. Otherwise it works very well.
Greg

Plasmid
Posts: 566
Joined: Mon Sep 28, 2020 5:34 am
Location: North GA
Contact:

Re: Greater Brightness

#2 Post by Plasmid » Thu Jul 08, 2021 4:31 pm

Hi Greg Im interested in doing this to a polarizing unit I have, which material do you use?

Chris Dee
Posts: 216
Joined: Mon Aug 12, 2019 1:02 pm

Re: Greater Brightness

#3 Post by Chris Dee » Thu Jul 08, 2021 7:43 pm

The front plastic diffuser on LED spotlight bulbs works well. Most are domed to some degree, but there are flat ones if you shop around.

BramHuntingNematodes
Posts: 1538
Joined: Tue Jan 21, 2020 1:29 am
Location: Georgia, USA

Re: Greater Brightness

#4 Post by BramHuntingNematodes » Thu Jul 08, 2021 8:13 pm

There can be good diffusers made from drafting film, a trade name is "Denril." It's cheap and is cut just like paper.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

Greg Howald
Posts: 1185
Joined: Tue Oct 20, 2020 6:44 am

Re: Greater Brightness

#5 Post by Greg Howald » Fri Jul 09, 2021 1:35 am

I went to the hardware store and bought a translucent plastic cutting board sheet that was smooth on one side and rough on the other. I brought it home, allowed my 1.5 inch hole punch to visit and used it as the diffuser. It works fine. Cost about 5 dollars for two sheets .
Greg

Post Reply