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:
Sep. 18, 2012
Filed:
Sep. 24, 2010
Hidenori Oka, Tokai, JP;
Hidenori Oka, Tokai, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
In a half mirror of a head mounted display which is formed by stacking a dielectric film and a metal film to a plate-shaped resin member, reflectivity of a P-polarized light and reflectivity of an S-polarized light do not agree with each other in at least a partial band of a visible band which contains wavelengths of three primary colors which constitute the image light. On the other hand, the reflectivity of the P-polarized light and the reflectivity of the S-polarized light with respect to the three primary colors are set approximately equal. An average value of transmittance of the P-polarized light and transmittance of the S-polarized light with respect to the respective wavelengths in the visible band which contains the wavelengths of the three primary colors is suppressed to a value which falls within a regulated range in the whole visible band.