Build a Periscope - Get Help Now!

[ChinToka]

Hi everyone!

Maybe i am in the wrong section, if so please put this where it belongs.

I am trying to built a very smal kind of periscope with two input oculars and one output ocular.
It should look like this:

I would really appreciate if someone can help me with this, thanks!

 

[FactChecker]

It might help if you ask a question (specific or general) that someone can respond to.

 

[Baluncore]

First we need some answers so we can work out what help you need.

At what wavelength, or over what band of light will the periscope be required to operate ?

What is the application for this periscope ?
It appears to have three ocular lenses. Is the device bi-directional like part of a laser range finder ?
What external range of focal lengths do you require ?
What is the physical scale of the device ?

Do you know of any existing solutions to the problem ?
Why are those solutions not applicable ?