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:
Jun. 30, 2020
Filed:
Aug. 31, 2018
Sony Corporation, Tokyo, JP;
Yoshihisa Sato, Saitama, JP;
Hiroyuki Yanagisawa, Kanagawa, JP;
Masa Tanaka, Kanagawa, JP;
Ryo Miyao, Tokyo, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
A first projection display apparatus includes a color separator (A) that has first and second incident surfaces (Sand S), and allows light in first to third wavelength bands to pass therethrough or reflects the light in the first to third wavelength bands; first to third reflective light modulators (); a first polarization splitter (G); a second polarization splitter (RB); and a projection optical system (). Light in at least one of the first to third wavelength bands enters the first incident surface of the color separator as first polarized light, and light in the other wavelength bands enters the second incident surface of the color separator as second polarized light orthogonal to the first polarized light.