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:
Jan. 09, 2018
Filed:
Mar. 09, 2015
Noah Bedard, San Francisco, CA (US);
Patrick Llull, Durham, NC (US);
Ivana Tosic, Berkeley, CA (US);
Wanmin Wu, Foster City, CA (US);
Kathrin Berkner, Los Altos, CA (US);
Noah Bedard, San Francisco, CA (US);
Patrick Llull, Durham, NC (US);
Ivana Tosic, Berkeley, CA (US);
Wanmin Wu, Foster City, CA (US);
Kathrin Berkner, Los Altos, CA (US);
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A multifocal display for rendering a 3D scene as a series of 2D images. In one aspect, the multifocal display includes a display, an optical imaging system, a refractive focus actuator and a controller. The display renders the 2D images. The optical imaging system is image-side telecentric and creates an image of the display. The refractive focus actuator is positioned at the pupil of the optical imaging system. Thus, adjusting the refractive focus actuator alters a location of the image of the display but does not significantly alter a size of the image. The controller coordinates adjustment of the refractive focus actuator with rendering of the 2D images on the display. The waveform driving the focus actuator is preferably designed to reduce ringing and jitter effects.