Is this a projection eyepiece?

Everything relating to microscopy hardware: Objectives, eyepieces, lamps and more.
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MikeBradley
Posts: 166
Joined: Sat Sep 22, 2018 4:29 pm
Location: Sunshine Coast, BC, Canada

Is this a projection eyepiece?

#1 Post by MikeBradley » Thu Sep 05, 2019 2:10 pm

Can anyone identify this item? It appears to be a projection eyepiece with a c mount adapter at one end, a lens at the other and an internal lens that can be moved up or down the tube and locked in place. The barrel fits a 23mm eyepiece tube and it does project a real image.
Thanks
Michael
Attachments
IMG_7956a.jpg
IMG_7956a.jpg (17.53 KiB) Viewed 2231 times
Olympus BH2,
AO110
Carl Zeiss Standard WL
Canon 90D

MicroBob
Posts: 3154
Joined: Sun Dec 25, 2016 9:11 am
Location: Northern Germany

Re: Is this a projection eyepiece?

#2 Post by MicroBob » Thu Sep 05, 2019 4:52 pm

Hi Mike,
this is an interesting component, never seen before. Can you post a couple more pictures?
For photographing black items it is helpful to set exposure compensation to +1 or +2.

Bob

MikeBradley
Posts: 166
Joined: Sat Sep 22, 2018 4:29 pm
Location: Sunshine Coast, BC, Canada

Re: Is this a projection eyepiece?

#3 Post by MikeBradley » Fri Sep 06, 2019 2:04 am

The unit is 13.5 cm in length and carries no makers information, at least none visible externally. It projects a respectable image onto a screen at roughly 4cm from the edge of the c –mount, I haven't tried measuring this precisely yet. Since a brand name is absent, I don’t expect that it incorporates any corrections. I’ve included a couple of additional images (below). Thanks Bob for tips on photographing shiny blacK.
Michael
Attachments
IMG_7965a.jpg
IMG_7965a.jpg (78.3 KiB) Viewed 2194 times
IMG_7961a.jpg
IMG_7961a.jpg (81.49 KiB) Viewed 2194 times
IMG_7959a.jpg
IMG_7959a.jpg (134.47 KiB) Viewed 2194 times
Olympus BH2,
AO110
Carl Zeiss Standard WL
Canon 90D

Scarodactyl
Posts: 2775
Joined: Sat Mar 03, 2018 9:09 pm

Re: Is this a projection eyepiece?

#4 Post by Scarodactyl » Fri Sep 06, 2019 2:39 am

I feel like I have seen this one before, not sure of the context though. It does look pretty similar to other old-style photo adapters I've handled before. Any idea of the size of the image?

MicroBob
Posts: 3154
Joined: Sun Dec 25, 2016 9:11 am
Location: Northern Germany

Re: Is this a projection eyepiece?

#5 Post by MicroBob » Fri Sep 06, 2019 4:35 am

It could have been part of a video camera attatchment or a projection screen. I don't know the size of the video camera sensors.
Perhaps it was part of a camera attatchment and the brand name was on the camera itself.

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