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:
Apr. 01, 2025
Filed:
Jun. 09, 2021
Naoki Nakamura, Saitama, JP;
Masahiro Itoh, Kanagawa, JP;
Susumu Momma, Kanagawa, JP;
Shigenobu Hirano, Kanagawa, JP;
Yoshifumi Sudoh, Kanagawa, JP;
Shun Okazaki, Tokyo, JP;
Yasuo Katano, Kanagawa, JP;
Kenji Kameyama, Kanagawa, JP;
Norikazu Igarashi, Kanagawa, JP;
Masamichi Yamada, Kanagawa, JP;
Aino Hasegawa, Kanagawa, JP;
Takashi Maki, Kanagawa, JP;
Naoki Nakamura, Saitama, JP;
Masahiro Itoh, Kanagawa, JP;
Susumu Momma, Kanagawa, JP;
Shigenobu Hirano, Kanagawa, JP;
Yoshifumi Sudoh, Kanagawa, JP;
Shun Okazaki, Tokyo, JP;
Yasuo Katano, Kanagawa, JP;
Kenji Kameyama, Kanagawa, JP;
Norikazu Igarashi, Kanagawa, JP;
Masamichi Yamada, Kanagawa, JP;
Aino Hasegawa, Kanagawa, JP;
Takashi Maki, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A light guide member () includes a boundary surface () configured to reflect image light guided to the boundary surface () and emit the image light outside the light guide member (), an opposing surface () parallel to the boundary surface (), the opposing surface () facing the boundary surface (), a first inclined surface () having an inclination in which a distance between the first inclined surface () and the boundary surface () decreases in a guiding direction of the image light, and a second inclined surface () between the opposing surface () and the first inclined surface (), the second inclined surface () inclined at a different angle with the first inclined surface () in the guiding direction.