Spectral image viewing device

Details Spectral image viewing device Spectral image viewing device

1987-12-23

1989-01-24

Arnold, Bruce Y.

350168, B44F 100, G02B 2704

Patent

active

047997648

ABSTRACT:
A spectral image viewing device incorporates a thin semi-transparent sheet of prismatic polytetrafluoroethylene polymer film, a viewing aperture and an image producing aperture. The device produces a visually perceptible array of spectral images when aligned with a light source. The device can be in the form of an attractive eye-catching desk-top calendar or decoration formed as flattenable pop-up cardboard structures resembling solid polyhedrons having similar polygons as top and bottom supporting panels.

REFERENCES:
patent: 3468599 (1969-09-01), Jordan

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