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:
Mar. 09, 2021
Filed:
Feb. 07, 2019
Apple Inc., Cupertino, CA (US);
Aaron L. Holsteen, Stanford, CA (US);
Chaohao Wang, Sunnyvale, CA (US);
Cheng Chen, San Jose, CA (US);
Jun Li, San Jose, CA (US);
Shih-Chyuan Fan Jiang, San Jose, CA (US);
Xiaokai Li, Sunnyvale, CA (US);
Young Cheol Yang, Sunnyvale, CA (US);
Zhibing Ge, Los Altos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An optical system may include equipment with a housing that is configured to receive external equipment such as a cellular telephone. The external equipment may include a display. To control the persistence of the display, the optical system may include a light modulating layer. The light modulating layer may switch between a transparent state in which display image light is passed through the light modulating layer to reach the viewer and an opaque state in which display image light is blocked by the light modulating layer from reaching the viewer. The light modulating layer may be placed in the transparent state for a portion of each display frame and the opaque state for the remaining portion of each display frame. The light modulating layer may be formed in the housing of the equipment that receives the external equipment or may be formed with the external equipment directly.