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:
Oct. 18, 2022
Filed:
Jan. 11, 2021
SK Telecom Co., Ltd., Seoul, KR;
Dong Youb Sinn, Seoul, KR;
Yong Woo Bae, Seoul, KR;
Seung Ho Shin, Seoul, KR;
Jae Hwang Yu, Seoul, KR;
Hak Soon Lee, Seoul, KR;
Guk Chan Lim, Seoul, KR;
Ku Ik Chung, Seoul, KR;
Jin Yong Han, Seoul, KR;
SK TELECOM CO., LTD., Seoul, KR;
Abstract
An image projection device includes: a panel unit configured to emit light rays; a projection optical system configured to receive the light rays emitted from the panel unit and to refract the light rays; a reflection unit having a reflection surface for receiving the light rays refracted by the projection optical system and reflecting the light rays; and a screen unit configured to display an image upon receiving the light rays reflected from the reflection surface. The panel unit, the projection optical system, the reflection unit, and the screen unit are arranged such that a distance of a shortest path among paths extending from the panel unit to the reflection unit through the projection optical system along a predetermined linear axis is longer than a distance of a longest path among paths extending from the reflection unit to the screen unit along the predetermined linear axis.