I found a few days ago this keycaps on the flee market. There is a small tag indicating to return it to the Astronautical Corporation of America (see pics). There caps have two different "switch-docking-part" (I'm new here

Seem's to be the same based on the patent number.
Disclosed is optical switching keyboard apparatus employing identically constructed aligned matrix panels forming the apparatus housing as well as defining collimated light beams focused upon a photodetector matrix disposed in an area on a circuit board which extends transverse to and through slotted apertures in the aligned panels. Coded electrical signals are provided by the translation of coded shutters into selected light interrupting relationship with the beams, the coded shutters effective to block selected apertures of the matrix panels, which apertures are tapered in the direction of the beam travel.
Y E S !! That's why I'm bidding on it and hereby ask everyone kindly to let me have it please thanks.
Slom wrote: If you loose, then there's this as a backup ... not one but two NASA keyboards, and also some extras included
https://www.ebay.com/itm/NASA-ARTIFACT- ... 1090432601
Seems that is exactly the type of keyboard NASA would use.Daniel Beardsmore wrote: So the patent for the Collimation keyboard isn't owned by Collimation …
But then you have this patent, that attempts to detect multiple keys using an unfathomable level of insanity:
http://www.google.com.pg/patents/US4379968
Dang, even scanning the URL for dQw4 didn't save me this time.
That's suspiciously like my avatar!