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. 07, 2015
Filed:
Oct. 27, 2010
Shin Tominaga, Minato-ku, JP;
Masao Imai, Minato-ku, JP;
Goroh Saitoh, Minato-ku, JP;
Masanao Natsumeda, Minato-ku, JP;
Shin Tominaga, Minato-ku, JP;
Masao Imai, Minato-ku, JP;
Goroh Saitoh, Minato-ku, JP;
Masanao Natsumeda, Minato-ku, JP;
NEC Corporation, Tokyo, JP;
Abstract
A hologram layer () is irradiated by light from an optical element (). The hologram layer () is provided with a first hologram () that diffracts in a predetermined direction, from among incident light from the optical element (), X-polarized light in which the polarization component is in a specific direction and emits the light as X-polarized light of a first phase state (P), and a second hologram () that both diffracts in the same direction as the X-polarized light of the first phase state (P) and moreover at an equal radiation angle, from among incident light from the optical element (), Y-polarized light in which the polarization component is in a direction orthogonal to that of the X-polarized light and converts it to X-polarized light, and emits the light as X-polarized light of a second phase state (P) that differs from the first phase state (P).