Pinhead mirror

Pinhead mirror

A pinhead mirror can be used to create a camera similar to a pinhole camera. Instead of passing through a tiny hole, the light to form the image is reflected by a small disc-shaped mirror (with a diameter the same as that of a pinhole; about 0.15mm-0.4mm). One advantage is that a pinhead mirror can be swivelled to scan a scene or project a scene to different locations.

Pinhead mirror technology is protected under US patent 4,948,211 - "Method and Apparatus for Optical Imaging Using a Small, Flat Reflecting Surface".

References

* TH Nilsson (1986) "The Pinhead mirror: A previously undiscovered imaging device?" "Applied Optics", 25, 2863-2864
* TH Nilsson (1987) "Pinhead mirrors: imaging, computing and the nature of light" "Pinhole Journal", 4, 2-5.


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