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, 2014
Filed:
Mar. 25, 2010
Kazunobu Ogawa, Mihara, JP;
Takeshi Ogawa, Fukuyama, JP;
Kenji Ohki, Higashihiroshima, JP;
Tetsuya Sadahiro, Mihara, JP;
Kazunobu Ogawa, Mihara, JP;
Takeshi Ogawa, Fukuyama, JP;
Kenji Ohki, Higashihiroshima, JP;
Tetsuya Sadahiro, Mihara, JP;
Dai Nippon Printing Co., Ltd., Shinjuku-Ku, JP;
Abstract
There is provided a screen that, as a screen suitable for an interactive board, can output video image light incident obliquely from the back surface side to a viewer side to display a reflection-free image and, at the same time, can realize easy handwriting on the screen surface on the viewer side. To this end, a transmission screen for an interactive board is provided that comprises at least a Fresnel lens sheet comprising a prism part on its incident light side, a light diffusing member provided on the Fresnel lens on its surface side remote from the prism part, and a hard coat layer provided on the outgoing light side of the light diffusing member.