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:
Jul. 02, 2024
Filed:
Aug. 27, 2021
Seiko Epson Corporation, Tokyo, JP;
Atsushi Saito, Chino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A virtual image display device includes an imaging light generation device that generates an imaging light, a first reflection type diffraction element that diffracts the imaging light from the imaging light generation device, a second reflection type diffraction element diffracts the imaging light from the first reflection type diffraction element so that the imaging light reflected by the first reflection type diffraction element is compensated for wavelength distribution, and a concave transmission mirror that has a concave shape and includes a partial reflection film reflecting a part of the imaging light and transmitting other part of the imaging light. In the second reflection type diffraction element diffracts the imaging light toward the mirror and transmits the part of the imaging light reflected by the mirror.