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:
Oct. 08, 1991
Filed:
Feb. 04, 1991
Applicant:
Inventor:
Jeffrey J Melby, Saint Paul, MN (US);
Assignee:
Minnesota Mining and Manfuacturing Company, Saint Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
F21V / ; G02B / ;
U.S. Cl.
CPC ...
359618 ; 362348 ; 362307 ; 362 26 ; 359850 ; 359638 ;
Abstract
A light fixture has a source of partially collimated light for emitting light having an axis of collimation. A structured surface has a plurality of prisms that are rendered reflective for reflecting light from the light source out of the cavity. The peaks of the prisms define a surface at least a portion of which makes an acute angle with the axis of collimation.