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:
May. 13, 1986
Filed:
Apr. 17, 1985
Applicant:
Inventor:
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 fixed-star projecting machine for a planetarium includes a fixed-star projection lens unit in each polygon of the globe surface of a fixed-star projection globe divided into a plurality of parts. Of these projection lens units, one whose projection range covers both sides of the equator is adapted to have its optical axis shifted in the direction which increases the attaching angle. The star positions of the fixed-star negative of the shifted projection lens unit are corrected to the normal projection positions according to the amount of shift.