Projector and process for creating a night-sky illusion

Details Projector and process for creating a night-sky illusion Projector and process for creating a night-sky illusion

1992-03-02

1994-02-01

Will, Thomas B.

Optics: image projectors

Stencil or perforated plate projector

434286, G03B 2100, G09B 2700

Patent

active

052836010

ABSTRACT:
A projector for creating a night-sky illusion on a planar surface such as a ceiling or a wall. The projector includes a base having two pairs of opposing walls and a shelf assembly adapted to be mounted in the base including a light bulb, a battery connected to the bulb, and a switch. It also includes a top adapted to be slidably mounted on the base and a transparency extending across an opening formed in the lid. The transparency is generally opaque, but includes a array of transparent dots fixed in predetermined positions. The disclosed method involves using the projector to produce an array of light spots resembling the night sky on a surface, applying luminescent paint to the spots and then exposing the painted spots to light energy, causing the paint to glow.

REFERENCES:
patent: 1828057 (1931-10-01), Lunt et al.
patent: 2669156 (1954-02-01), Fitzgerald
patent: 3473428 (1969-10-01), Phillips
patent: 4178701 (1979-12-01), Sadler
patent: 4579534 (1992-04-01), Lipman et al.
patent: 4955714 (1990-09-01), Stotler et al.

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