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. 07, 2015
Filed:
Apr. 12, 2011
James H. Collias, Hillsboro, OR (US);
Charles H. Collias, Chelmsford, MA (US);
Nicholas J. Foster, San Francisco, CA (US);
Jeffrey M. Hamel, Townsend, MA (US);
James H. Collias, Hillsboro, OR (US);
Charles H. Collias, Chelmsford, MA (US);
Nicholas J. Foster, San Francisco, CA (US);
Jeffrey M. Hamel, Townsend, MA (US);
Zylight LLC, Los Angeles, CA (US);
Abstract
An electrically adjustable optical diffusion panel for use in film or video production having a frame, diffusion material affixed to the frame, where the transparency of the material is continuously and variably changeable between a substantially transparent state and a substantially opaque state in response to an electric potential applied to electrodes of the material and a controller and battery. The electrically adjustable diffusion panel eliminates the need for manually changing diffusion papers or other filters and provides a continuous range of selectable levels of transparency/diffusion.