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.

Date of Patent:
Jan. 21, 2025

Filed:

Nov. 21, 2019
Applicant:

Sony Group Corporation, Tokyo, JP;

Inventors:

Akira Tanaka, Tokyo, JP;

Yuji Nakahata, Tokyo, JP;

Tomoya Yano, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/20 (2006.01); G02B 5/32 (2006.01); G03B 21/60 (2014.01); G03H 1/02 (2006.01);
U.S. Cl.
CPC ...
G02B 5/20 (2013.01); G02B 5/32 (2013.01); G03B 21/60 (2013.01); G03H 1/0248 (2013.01);
Abstract

There is provided a display apparatus of the present invention includes a transparent screen configured by a transmissive or reflective volume hologram, a first image projection section disposed on a first main surface side of the transparent screen, and projecting first image light onto the first main surface; and a second image projection section disposed on a second main surface side of the transparent screen, and projecting second image light onto the second main surface. The display apparatus further includes a first light shielding section preventing external light from being directly incident on the first main surface at least at same incident angle as the first image light, and a second light-shielding section preventing external light from being directly incident on the second main surface at least at same angle as the second image light.


Find Patent Forward Citations

Loading…