Amplified optical window for three-dimensional images.
A proposed amplified optical window can form an observable three-dimensional image of an object in darkness. The window comprises two gradient-index (GRIN) lens arrays with an image intensifier between them. The length of the individual GRIN lenses that constitute the arrays is three fourths of the cycle of the meandering optical path on the input side and one fourth of the cycle on the output side. A primitive experimental result proved that the method produces three-dimensional images to be observed. This device would be used as a viewer for observing three-dimensional objects in a dark space without a camera and display equipment.
Okano
Fumio
F
NHK Science & Technical Research Laboratories, 1-10-11, Kinuta, Tokyo 157-8510, Japan.
Arai
Jun
J
Okui
Makoto
M