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. 13, 2015
Filed:
Apr. 19, 2011
Shinichi Shikii, Nara, JP;
Keiji Sugiyama, Kyoto, JP;
Shinichi Kadowaki, Fukuoka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A see-through display including a light source for emitting light, a projection optical system for projecting the light emitted by the light source, and a volume hologram for deflecting the light projected by the projection optical system. The volume hologram has a linear expansion coefficient of α (/° C.) and interference fringes recorded with recording light having a wavelength of Λ (nm). The wavelength of the light emitted by the light source has a temperature dependency of K (nm/° C.), and the wavelength Λ (nm) and the temperature dependency K (nm/° C.) satisfy the relationship of 0≦K/Λ≦2α.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile