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. 13, 1998
Filed:
Jan. 30, 1996
Applicant:
Inventor:
John P Wieczorek, Waterloo, CA;
Assignee:
Virtek Vision Corp., Waterloo, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C / ; G02C / ;
U.S. Cl.
CPC ...
351 47 ; 351165 ; 2-8 ;
Abstract
Improved goggles for use with laser projection systems allow passage of a narrow band of red wavelengths that surround the wavelength at which the laser is projecting. The goggles block adjacent wavelengths. Thus, the laser image is in contrast, and is easily seen by a wearer. At the same time, the goggles pass at least a portion of the blue and green wavelengths. Thus, the wearer is provided with an image that is not unnatural, but includes most of the natural colors. In this way, the goggles not only provide a clear image of the laser beam, but also are easily worn by a wearer for an extended period of time.