Nikon Optiphot replacement bulb
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- Posts: 211
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- Location: Oregon, USA
Nikon Optiphot replacement bulb
I'm looking for a 12v 50w halogen bulb for my second Optiphot lamp house, since I seem to have a problem saying 'no' to more microscopes.
The ones on eBay are a bit pricey (~ $26.00) and don't disclose the pin base specs:
https://www.ebay.com/itm/REPLACEMENT-BU ... 3360356665
Would something like this work equally well? It has the same T3.5 shape, and GY6.35 base (is that what the Optiphot uses?):
https://www.amazon.com/Sunlite-Q50-GY6- ... 69&sr=8-11
Heather
The ones on eBay are a bit pricey (~ $26.00) and don't disclose the pin base specs:
https://www.ebay.com/itm/REPLACEMENT-BU ... 3360356665
Would something like this work equally well? It has the same T3.5 shape, and GY6.35 base (is that what the Optiphot uses?):
https://www.amazon.com/Sunlite-Q50-GY6- ... 69&sr=8-11
Heather
Re: Nikon Optiphot replacement bulb
Perhaps this will help
https://www.morrellonline.com/store/p29 ... _Bulb.html
They used to be http://www.microscopebulb.com/ they appear to have been taken over.
Here is the old bulb catalog: https://www.dropbox.com/s/7tkkarwlk5ltt ... y.pdf?dl=0
Note: No need to create an account to download from Dropbox.
Just scroll to the bottom of the invitation window and click on 'No thanks, continue to view'
Then press 'download' at top right of screen.
https://www.morrellonline.com/store/p29 ... _Bulb.html
They used to be http://www.microscopebulb.com/ they appear to have been taken over.
Here is the old bulb catalog: https://www.dropbox.com/s/7tkkarwlk5ltt ... y.pdf?dl=0
Note: No need to create an account to download from Dropbox.
Just scroll to the bottom of the invitation window and click on 'No thanks, continue to view'
Then press 'download' at top right of screen.
Last edited by 75RR on Fri Nov 22, 2019 7:40 pm, edited 2 times in total.
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)
Olympus E-P2 (Micro Four Thirds Camera)
Re: Nikon Optiphot replacement bulb
I think that a 12V car lamp from an Automobile parts store or even Home Depot might work. Just a guess.
Re: Nikon Optiphot replacement bulb
A search in bulbworks using catalog number 76516 gives these results:
Only the first of which has the vertical side facing filament
https://www.bulbworks.com/advancedSearc ... t_no=76516
Only the first of which has the vertical side facing filament
https://www.bulbworks.com/advancedSearc ... t_no=76516
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)
Olympus E-P2 (Micro Four Thirds Camera)
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- Joined: Tue Apr 16, 2019 2:07 am
- Location: Oregon, USA
Re: Nikon Optiphot replacement bulb
Thank you, 75RR. That's an interesting observation about the vertical filament. I'll have to investigate the merits of the vertical vs horizontal filaments.
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Re: Nikon Optiphot replacement bulb
You’ll need a vertical facing filament to fill the aperture at high numerical apertures.
Cheers,
John
Cheers,
John
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- Posts: 211
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- Location: Oregon, USA
Re: Nikon Optiphot replacement bulb
That's good to know. Thank you. My current Optiphot has a horizontal filament so it will be interesting to compare the two bulb varieties under various conditions.abednego1995 wrote: ↑Sun Nov 24, 2019 12:58 amYou’ll need a vertical facing filament to fill the aperture at high numerical apertures.
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Re: Nikon Optiphot replacement bulb
The bulb stated in the Optiphot manual is a Philips 7027 or Osram 64610. Whilst in the hand, with pins at the bottom, the filament is horizontal or transverse, when mounted into the lamp from the side, it then lies vertically in use. This may explain the apparent contradiction in the dialogue above.Sauerkraut wrote: ↑Sun Nov 24, 2019 7:47 pmThat's good to know. Thank you. My current Optiphot has a horizontal filament so it will be interesting to compare the two bulb varieties under various conditions.abednego1995 wrote: ↑Sun Nov 24, 2019 12:58 amYou’ll need a vertical facing filament to fill the aperture at high numerical apertures.
Re: Nikon Optiphot replacement bulb
7027 should be readily available worldwide ... it is [or was] very widely used:
https://www.mygreenlighting.co.uk/repla ... /8925.html
MichaelG.
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Edit: just noticed that Osram also offers a Xenon filled version, which is brighter:
https://www.osram.com/appsj/pdc/pdf.do? ... MP_1006731
https://www.mygreenlighting.co.uk/repla ... /8925.html
MichaelG.
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Edit: just noticed that Osram also offers a Xenon filled version, which is brighter:
https://www.osram.com/appsj/pdc/pdf.do? ... MP_1006731
Too many 'projects'
Re: Nikon Optiphot replacement bulb
Inspected an Optiphot with transverse filament bulb, and it functions flawlessly in brightfield, and provides Kohler illumination.photomicro wrote: ↑Sun Nov 24, 2019 10:28 pmThe bulb stated in the Optiphot manual is a Philips 7027 or Osram 64610. Whilst in the hand, with pins at the bottom, the filament is horizontal or transverse, when mounted into the lamp from the side, it then lies vertically in use. This may explain the apparent contradiction in the dialogue above.Sauerkraut wrote: ↑Sun Nov 24, 2019 7:47 pmThat's good to know. Thank you. My current Optiphot has a horizontal filament so it will be interesting to compare the two bulb varieties under various conditions.abednego1995 wrote: ↑Sun Nov 24, 2019 12:58 amYou’ll need a vertical facing filament to fill the aperture at high numerical apertures.