SEE-THROUGH DISPLAY DEVICE

WIPO Patent Application WO/2021/070970

A1

Provided is a see-through display device that can prevent blurring of an image while ensuring a wide angle of view and a bright field of view with a simple configuration. The present invention is characterized by comprising: an optical system which has first and second elliptical concave mirrors, the mirrors each having two focal points and one of said two focal points being shared between the mirrors, and which forms object light incident on the focal point of the first elliptical concave mirror that is not the shared focal point into an image at the focal point of the second elliptical concave mirror that is not the shared focal point; a display which is disposed at a position that does not block the object light; and an optical means which is disposed on the optical path of the object light and superimposes display light emitted from the display on the object light. The present invention further comprises a light-blocking panel that can block the object light, the light-blocking panel being disposed on the incident light path of the object light on the first elliptical concave mirror and in front of the optical means.

JP2008122616	SCANNING OPTICAL DEVICE AND IMAGE FORMING APPARATUS
WO/2016/143061	PROJECTION TYPE VIDEO DISPLAY DEVICE
JPS55157710	ZOOM OPTICAL SYSTEM

ZHANG YAN (JP)
KIYOKAWA KIYOSHI (JP)
SAKATA NOBUCHIKA (JP)

PCT/JP2020/038512

April 15, 2021

October 12, 2020

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NATIONAL UNIV CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY (JP)

G02B17/08; G02B27/02; H04N5/66

JP2001290102A	2001-10-19
JPH0651264A	1994-02-25
JPH07274097A	1995-10-20
JP2015519595A	2015-07-09
US6504658B1	2003-01-07

THE PATENT CORPORATE BODY GLOBAL INTELLECTUAL PROPERTY (JP)

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