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, 2009
Filed:
Aug. 23, 2007
Andrew W. Ishak, Waterford, VT (US);
Joshua N. Haddock, Roanoke, VA (US);
William Kokonaski, Gig Harbor, WA (US);
Ronald Blum, Roanoke, VA (US);
Venkatramani S. Iyer, Roanoke, VA (US);
Mark M. Mattison-shupnick, Petaluma, CA (US);
Andrew W. Ishak, Waterford, VT (US);
Joshua N. Haddock, Roanoke, VA (US);
William Kokonaski, Gig Harbor, WA (US);
Ronald Blum, Roanoke, VA (US);
Venkatramani S. Iyer, Roanoke, VA (US);
Mark M. Mattison-Shupnick, Petaluma, CA (US);
High Performance Optics, Inc., Roanoke, VA (US);
Abstract
A film suitable for use in an ophthalmic system is provided. The film may selectively inhibit blue light within the wavelength range of 400 nm to 460 nm to reduce phototoxic light to the eye while maintaining photopic vision, and may be color balanced to allow for the system into which the film is incorporated to be perceived as colorless to a viewer observing and/or using the system. The system may have a photopic and scotopic luminous transmission of 85% or more and a phototoxicity ratio of less than 80%. When used in an ophthalmic system or other system disposed between an observer's eye and a light source, the film may reduce the flux of blue light to the internal structures of the eye while reducing or minimizing dilation of the pupil.