Volumetric display with rim-driven, varifocal beamsplitter and high-speed, addressable backlight
US8823702B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Feb 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for generating volumetric images viewable without 3D eyewear. The apparatus includes an image display assembly displaying a first image at a first display time and a second image at a second display time (e.g., a number of planar or 2D images on a display screen/surface). The apparatus includes a flexible two-way mirror element (a varifocal beamsplitter). During operations, the first and second images from the display assembly are directed toward and then reflected from the back side of the mirror element. The apparatus also includes a hoop-shaped frame supporting a peripheral edge of the mirror element. A driver shakes the frame to resonate the mirror element between convex and concave shapes while it is used for reflecting the first and second images. The apparatus also includes a concave mirror positioned relative to the mirror element to receive the reflected first and second images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.