Ring illumination device for an objective
Ring illumination device for an objective
Someone at Zeiss put a lot of thought into this one:
https://worldwide.espacenet.com/patent/ ... S9297993B2
MichaelG.
https://worldwide.espacenet.com/patent/ ... S9297993B2
MichaelG.
Too many 'projects'
-
- Posts: 1546
- Joined: Tue Jan 21, 2020 1:29 am
- Location: Georgia, USA
Re: Ring illumination device for an objective
Unitron had a similar objective with a ring of lights built in, of which I have a working example. It was called the unipak ring illuminator.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination
Re: Ring illumination device for an objective
As featured here, Bram ?
http://www.emcgrath.com/catalog/images/ ... LBR248.pdf
… or did they do something else [more integrated] ?
MichaelG.
http://www.emcgrath.com/catalog/images/ ... LBR248.pdf
… or did they do something else [more integrated] ?
MichaelG.
Too many 'projects'
- blekenbleu
- Posts: 301
- Joined: Tue Feb 25, 2020 5:55 pm
- Location: South Carolina low country
- Contact:
Re: Ring illumination device for an objective
This expedient employs 40mm LED halo (angel eye):
.. with a partial cylinder glued to its back and held to a suitable objective by an o-ring:
https://blekenbleu.github.io/microscope/#RGB
.. with a partial cylinder glued to its back and held to a suitable objective by an o-ring:
https://blekenbleu.github.io/microscope/#RGB
Metaphot, Optiphot 1, 66; AO 10, 120, EPIStar, Cycloptic
-
- Posts: 6327
- Joined: Fri May 15, 2015 12:15 am
Re: Ring illumination device for an objective
A Professor Alexander Silverman, dean of the School of Chemistry, University of Pittsburgh patented a small circular objective mounted incident illuminator in the late teens. https://patents.google.com/patent/US1311186A/en .
Spencer manufactured and catalogued 2 versions it in the 1930 catalogue as the Silverman illuminator. A small Silverman illuminator for use with biological, polarizing and chemical microscopes and a large Silverman illuminator to illuminate larger objects.
There was an accessory blind that allowed for a form of unilateral oblique.
Spencer manufactured and catalogued 2 versions it in the 1930 catalogue as the Silverman illuminator. A small Silverman illuminator for use with biological, polarizing and chemical microscopes and a large Silverman illuminator to illuminate larger objects.
There was an accessory blind that allowed for a form of unilateral oblique.
-
- Posts: 1546
- Joined: Tue Jan 21, 2020 1:29 am
- Location: Georgia, USA
Re: Ring illumination device for an objective
Yes. Although most of the objectives pictured are the usual, I believe you can see one of the special ones on page 3 of this pamphlet. The illuminator replaces the usual cowl and positions 7 individual lights very near the lens. I believe each illuminator is specially fitted to one objective only as there is a clear marking of the objective power on it.MichaelG. wrote: ↑Thu Dec 15, 2022 9:53 amAs featured here, Bram ?
http://www.emcgrath.com/catalog/images/ ... LBR248.pdf
… or did they do something else [more integrated] ?
MichaelG.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination