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:
Jun. 11, 2019
Filed:
Dec. 10, 2015
Applicant:
Light Prescriptions Innovators, Llc, Altadena, CA (US);
Inventors:
Julio C Chaves, Coimbra, PT;
Pablo Benitez, Madrid, ES;
Juan Carlos Minano, Madrid, ES;
Waqidi Falicoff, Talent, OR (US);
Assignee:
Light Prescriptions Innovators, LLC, Altadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 5/00 (2006.01); F21V 8/00 (2006.01); G09G 3/34 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0028 (2013.01); G02B 6/0066 (2013.01); G09G 3/3406 (2013.01);
Abstract
An etendue squeezing optic includes light guiding elements that are extruded sideways to guide light to a wide outlet surface for efficient injection into an edge face of a flat light guide such as a backlight panel for a visual display, in combination with a light source optically coupled to the light inlet through an air-gap, so that light entering the optic through the air-gap is confined to a cone of directions determined by a critical angle of refraction into the optic from air at the air-gap.