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:
Apr. 14, 2015
Filed:
Aug. 21, 2012
Yeong-feng Wang, Taoyuan Hsien, TW;
Ming-wei Tsai, Taoyuan Hsien, TW;
Keh-su Chang, Taoyuan Hsien, TW;
Rong-chang Liang, Cupertino, CA (US);
Yeong-Feng Wang, Taoyuan Hsien, TW;
Ming-Wei Tsai, Taoyuan Hsien, TW;
Keh-Su Chang, Taoyuan Hsien, TW;
Rong-Chang Liang, Cupertino, CA (US);
Delta Electronics, Inc., Taoyuan, TW;
Abstract
An embodiment of the invention provides a focus adjustable apparatus adapted to be disposed on a transparent substrate to modulate a plurality of rays passing through the transparent substrate. The focus adjustable apparatus includes a light modulation device, an eye tracking device, an eyesight status device and a controller. The light modulation device receives the rays from the transparent substrate and adjusts an emergent angle of each ray. The eye tracking device tracks a position of a user and estimates a distance between the user and the focus adjustable apparatus. The eyesight status device obtains an eyesight data of the user. The controller provides a control signal to drive the light modulation device by estimating the emergent angle of the each ray according to the distance between the user and the focus adjustable apparatus and the eyesight data of the user.