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:
Sep. 21, 1976
Filed:
Oct. 16, 1975
Applicant:
Inventors:
Joel A Weiss, Fairfax, VA (US);
James P Sheridan, Burke, VA (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3501 / ; 350312 ;
Abstract
A device which provides rapid attenuation of incident light, the degree of ttenuation being proportional to the intensity of the light. This system can be used for eye or device protection in sunlight or other situations in which the illuminating source has a spectral output which includes radiation in the 300-400 nm spectral region. The shutter/attenuator can achieve its maximum extinction in less than 100 psec after being illuminated and returns to maximum transmission within 10 nsec after the light is extinguished.