Made a night vision spotting scope from a rather large cascade tube and I'm wishing for a way to get the same image in both eyes like binoculars. Is this possible to do with DIY parts and off the shelf optics? The phosphor screen (what needs to be magnified into the eye) is 34mm in dia and has a clear picture without an eyepiece, but an eyepiece will magnify it for easier usage. I was wondering if anyone out there had a solution for something like this. I think I can get access to surplus prisms and mirrors if necessary, but I have no idea what I would need.

I want to make my own 3D video and I only have one camera. could I make a camera attachment in a "T" shape and use a prism to split the camera's focal point to the left and right then have each direction hit a 45 degree mirror to turn the focus back to the front of the camera and set a filter on each side of attachment that will correspond to filters on lenses of 3D glasses, and have this make a stereoscopic video with one camera? Could anybody who has experience with prisms and lenses verify if this would work before I start building a prototype...

Hey everyone.  I am new to instructables but you guys have really inspired me to see what I can come up with.  By taking a few ideas I have come across on the net, around here, and a quick epiphany after watching a 3d movie, I have an idea.  (sorry for post formatting, still trying to figure this out) I am trying to pull the parts together right now but if someone could build it first they could have the instructable.  Well, to the idea then.  Basically, using 2 ideas from Johnny Chung Lee(a grad from Carnegie Mellon University) that he has released to the public with software(found at johnnylee.net), any 2 digital projectors, and several polarized glasses received from movie theaters you can build your own 3d projection system with eye tracking to add perspective. The two projects of johnny Lee's we are using are Wii-mote eye tracking and Projector Stitching.  Projector stitching will be used to automatically calibrate the projectors to perfectly overlap so the offset images are accurate(absolutely critical for 3d images) so we don't have to and the eye tracking would be used by software to add perspective to any live 3d environment/game(not necessary).  The polarized glasses are used both by the projectors and the user so atleast 2 pairs would have to be acquired.  Lenses are placed in front of the projector to filter out all but the correct pole of light.  This will dim the projector slightly as light is being lossed but what you get is cheap polarized image.  I have tested this and it does work if you project light through the back of the lens(the eye side).  The only thing that presents a problem is the projection surface.  Most surfaces scatter and remove polarization from light.  The screens at movie theaters are specially made to not do this.  I am still researching a cheap material that has this property so I can use it but if any of you find it first have at it.  I just want the instructable up so we can see what we can do with it.  What you get with this setup is two overlapping images that can be filtered effectively between the two eyes.  This is what enables a 3d image to be sent.  Add in the eye tracking and you have a 3d image that adjusts based on the position of the users head.  This adds an amazing degree of interactivity to a 1 player game as now you have depth added to the experience and moving actually does something for the game.

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Looking for a way to make books compact and paperless does anybody know of any other ways to store books & magazines that are paperless and not electronic? The only systems that I know of are micro image sheets, micro-opaque images, microfilm, microfiche, microprints microcards and Stereoscopic viewers but they need magnified readers and are not all that practical for anything other then long term preservation.

Why are prisms not used for phone cameras (or are they) ? it seems to me that prisms may be implemented for bi-directional cameras, for lengthening the focus distance, for widening the view field and stereoscopic  images.

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