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:
Jul. 22, 1980
Filed:
Feb. 07, 1978
Applicant:
Inventors:
Gebhard Kuhn, Jena, DD;
Ludwig Meier, Jena, DD;
Assignee:
Jenoptik Jena G.m.b.H., Jena, DD;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362327 ; 350168 ; 362339 ;
Abstract
The invention is in concern of an arrangement for producing artificial rainbows, particularly for use in planetaria, in which a bundle of light emitted from a light source and directed through an aperture upon a prism is dispersed by the latter and reflected at a cylindrical reflector. Due to the reflection at the cylindrical reflector the projected light bundle is of a rainbow shape, the radius thereof depends on the position of the cylindrical reflector relative to the prism.