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. 21, 2020
Filed:
Sep. 27, 2013
Michael T. Burchill, Langhorne, PA (US);
Steven W. Gaskey, Ambler, PA (US);
Robert A. Wanat, Langhorne, PA (US);
Jiaxin GE, Lower Providence, PA (US);
Mark A. Aubart, West Chester, PA (US);
Arkema France, Colombes, FR;
Michael T. Burchill, Langhorne, PA (US);
Steven W. Gaskey, Ambler, PA (US);
Robert A. Wanat, Langhorne, PA (US);
Jiaxin Ge, Lower Providence, PA (US);
Mark A. Aubart, West Chester, PA (US);
Arkema France, Cololmbes, FR;
Abstract
The invention relates to optical light diffusers for use with point light sources, such as LED lighting. The optical diffusers achieve an optimum balance of light transmission and hiding power. The optical light diffuser is a transparent plastic matrix, such as Plexiglas® resin from Arkema Inc., having organic particles dispersed within the matrix. The particles are crosslinked beads having specific particle sizes and loading. Different beads can be combined to provide added properties such as a textured surface, and to optimize hiding power and light transmission. The invention also relates to a luminous device containing at least one light-emitting diode and a cover made of the optical light diffuser. The invention further relates to a method for assessing hiding power.