US 2014/0177063 A1Published application

Virtual image display apparatus

AssigneeIndustrial Technology Research Institute

InventorsChy-Lin Wang, Kuo-Tung Tiao, Tian-Yuan Chen, Lung-Pin Chung, Chun-Chuan Lin, Hsien-Chang Lin, Chih-Cheng Hsu, Wei-Jia Huang, Chia-Chen Chen

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

A virtual image display apparatus configured to be in front of at least one eye of a user includes an image display unit, a first beam splitting unit, and a reflection-refraction unit. The image display unit provides an image beam. The first beam splitting unit disposed on transmission paths of the image beam and an object beam causes at least one portion of the object beam to propagate to the eye and causes at least one portion of the image beam to propagate to the reflection-refraction unit. The reflection-refraction unit includes a lens portion and a reflecting portion on a first curved surface of the lens portion. At least part of the image beam travels through the lens portion, is reflected by the reflecting portion, travels trough the lens portion again, and is propagated to the eye by the first beam splitting unit in sequence.

Claims28

Dependent claims

A virtual image display apparatus configured to be disposed in front of at least one eye of a user, the virtual image display apparatus comprising:

an image display unit providing an image beam;
a first beam splitting unit disposed on a transmission path of the image beam and a transmission path of an object beam from a foreign object, the first beam splitting unit causing at least one portion of the object beam to propagate to the at least one eye;
and
a reflection-refraction unit, the first beam splitting unit causing at least one portion of the image beam to propagate to the reflection-refraction unit, the reflection-refraction unit comprising:
a lens portion comprising a first curved surface;
and
a reflecting portion located on the first curved surface of the lens portion, wherein at least one portion of the image beam from the first beam splitting unit travels through the lens portion, is reflected by the reflecting portion, travels trough the lens portion again, and is propagated to the at least one eye by the first beam splitting unit in sequence.

4 more elements

Dependencies are inferred from the claim text.