Simplified night sky display system

Details Simplified night sky display system Simplified night sky display system

2006-01-18

2008-10-21

Sever, Andrew T (Department: 2851)

Optics: image projectors

Structurally related projector and screen

C353S122000, C434S284000, C434S287000

Reexamination Certificate

active

07438422

ABSTRACT:
A portable structure, simply constructed with inexpensive and generally lightweight materials, for displaying a selected portion of the night sky and selected planets, satellites, comets and other astronomically observable objects that are visually perceptible within that portion of the night sky. The structure includes a computer having stored signals representing the observable objects, an image projector that converts and projects the stored signals as visually perceptible images, a first curvilinear light-reflecting surface to receive and reflect the visually perceptible images, and a second curvilinear surface to receive and display the visually perceptible images reflected from the first surface. The images may be motionless or may move with passage of time. In one embodiment, the structure includes an inflatable screen surface that receives gas in an enclosed volume, supports itself without further mechanical support, and optionally self-regulates pressure of the received gas within the enclosed volume.

REFERENCES:
patent: 3250024 (1966-05-01), Douthitt et al.
patent: 6644816 (2003-11-01), Perra et al.
patent: 6739725 (2004-05-01), Ben-Ari
patent: 7004588 (2006-02-01), Sadler
patent: 7229176 (2007-06-01), Onaga

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