logo

For the Inventor, By the Inventor

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.:

US 10908491 B1

PDFFull Text
Date of Patent:
Feb. 02, 2021

Filed:

Jun. 20, 2019

Optical film

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Yujiro Yanai, Minami-ashigara, JP;

Michio Nagai, Minami-ashigara, JP;

Akira Yamamoto, Minami-ashigara, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Clayton E LaBalle

Assistant Examiner:

Kevin C Butler

Int. Cl.
CPC ...
G03B 21/62 (2014.01); C09J 7/22 (2018.01); C09J 7/38 (2018.01); B32B 27/08 (2006.01); B32B 38/18 (2006.01); C08F 220/10 (2006.01); G02B 5/02 (2006.01); H04N 5/74 (2006.01); C08J 7/04 (2020.01); G03B 21/56 (2006.01); G03B 21/58 (2014.01); G03B 21/60 (2014.01);
U.S. Cl.
CPC ...
G03B 21/62 (2013.01); B32B 27/08 (2013.01); B32B 38/1808 (2013.01); C08F 220/10 (2013.01); C08J 7/0427 (2020.01); C09J 7/22 (2018.01); C09J 7/38 (2018.01); G02B 5/02 (2013.01); G03B 21/56 (2013.01); G03B 21/58 (2013.01); G03B 21/60 (2013.01); H04N 5/74 (2013.01); C08J 2433/00 (2013.01);
Abstract

Provided is an optical film having high contrast and excellent visibility. The optical film includes: a transparent screen; and a transparent reflecting layer that is disposed on one main surface of the transparent screen, in which in the transparent screen, a ratio T/Tof a light amount Tof transmitted light at an angle of 15 degrees with respect to a normal direction of the main surface to a light amount Tof transmitted light at an angle of 30 degrees with respect to the normal direction of the main surface is 2.0 or higher, and the ratio R/Rof the light amount Rof reflected light at an angle of 15 degrees with respect to the normal direction of the main surface to the light amount Rof reflected light at an angle of 30 degrees with respect to the normal direction of the main surface is 2.0 or lower.

Find Patent Forward Citations

Yanai, Yujiro. (2021). Optical film (U.S. Patent No. 10908491). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10908491

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…