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7621647 |
Optical projection system and method of use
Embodiments include a light engine to generate pixels and a number of lenses positioned to receive pixels from the light engine and to project the pixels on to a field with a higher angular pixel...
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7438422 |
Simplified night sky display system
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...
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7004588 |
Planetarium and point light source for use in same
Featured is a portable planetarium device suitable for use in projecting clear bright images of stars, planets, and other celestial objects onto a curved viewing surface. The portable planetarium...
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5141442 |
Apparatus and didactic method for teaching and showing primary orbital phenomena and various movements
The invention is directed to an apparatus for representing orbital phenomena. It comprises a sphere (20) pivoting about an inclined axis (8) on bearings (38, 60) integral with a support ring (23)...
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5026287 |
Three-dimensional constellation model and construction kit thereof
A construction kit for building a three-dimensional constellation model is disclosed for viewing of celestial maps. The kit includes a combination of (a) a zenith section having an external shape...
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4752228 |
Spherical display device
A terrestrial globe for observing the polar areas. The globe is made from a pair of semi-spherical members put together along a vertical plane into a spherical body. The globe is supported on a...
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4702703 |
Devices for aiding astronomers to locate stars and other celestial bodies
A hollow transparent sphere has light reflecting spots formed on its surface in positions corresponding to the actual locations of stars in the night sky. The sphere is illuminated from within so...
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4497582 |
Planetarium alarm clock
A hemispherical dome of opaque thin material is pierced with small openings in patterns conforming to the appearance of constellations in the sky. Mounted on a rotating cylinder, the dome is turned...
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4271604 |
Portable planetarium
A portable planetarium is disclosed for ascertaining the position of the sun, the planets and their satellites and the stars throughout the year. The planetarium includes a frame having a...
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4051607 |
Celestial display device
A celestial display device having at least one box-like support member formed with a concave, hemispherical upper surface. A plurality of jigsaw puzzle pieces having convex lower surfaces are...
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3863364 |
EDUCATIONAL/NAVIGATIONAL DEVICE
A device for displaying the positions of at least some of the celestial bodies of the celestial sphere for any point on the earth's surface at any time, comprising a flexible hemispherical envelope...
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