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US 4,400,162 AGranted
Planetarium
OwnerConstantine F. Rustemisinventor
Life of this patent
Estimating the term…
Abstract
Disclosed is an enclosed planetarium with both fluorescent and phosphorescent painted representations of astronomical bodies, some of the representations may be mobile and rotated and the remainder of the representations may be painted on the inside surface of the enclosure. An ultraviolet light source is provided which upon activation illuminates all of the representations, but upon extinguishment only the phosphorescent painted representations continue to be visible. This provides two different displays both of which have the pleasing effect of ultraviolet illumination.
Claims9
A miniature astronomical display comprising:
- (a) an enclosure, the interior of which is viewable from appropriate positions exterior to said enclosure,
- (b) a first set of representations of astronomical objects painted with phosphorescent paint and contained within said enclosure,
- (c) a second set of representations of astronomical objects painted with fluorescent paint and contained within said enclosure,
- (d) an ultraviolet light source positioned to illuminate said first and second sets,
- (e) means for activating and deactivating said ultraviolet light source,
- (f) said phosphorescent paint characterized by illumination of said first set by ultraviolet light causes said first set to glow and said glow decays but is still visible for a few minutes after said illumination terminates, and
- (g) said fluorescent paint characterized by illumination of said second set by ultraviolet light causes said second set to glow and said glow ceases just after said illumination terminates.
4 more elements
Dependencies are inferred from the claim text.