The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1987
Filed:
Apr. 26, 1985
Applicant:
Inventors:
Takeshi Maejima, Toyokawa, JP;
Kenji Shiba, Toyohashi, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09B / ;
U.S. Cl.
CPC ...
434286 ;
Abstract
A planetarium includes a fixed star field projector and a plurality of planet projectors spaced from the star field projector. A computerized control controls the rotation of the projectors, each of the planet projectors being controlled in its rotation about a pair of perpendicular axes alternatively in two modes, in the first mode the projected image traversing normal apparent orbital or other path in the star field and in the second mode the image traversing the shortest path from an initial point to a terminal point in the star field which points represent different times and/or points of observation.