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US 12,000,560 B2Granted
Illumination systems for reflective displays
AssigneeE Ink Corporation
InventorsDirk Hertel, Richard J. Paolini, Jr., Benjamin Harris Paletsky, Stephen J. Telfer
Life of this patent
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Abstract
A display device (30) comprises a reflective display (38) arranged to render a first image viewable through a viewing surface and a projection means (31-37) arranged to render a second image viewable in reflection on the viewing surface, the reflective display (38) and the projection means (31-37) being mounted on a common frame.
Claims15
A display system, comprising:
- a reflective display for rendering a first image viewable through a viewing surface;
- and
- a projection system including a light source, one or more optical elements, and a light modulator for rendering a second image viewable in reflection on the viewing surface, the second image having approximately the same width and height as the first image and being superimposed on the first image to form a composite image, wherein the first image has w1 pixels in the width dimension and h1 pixels in the height dimension, where h1>w1, and the second image has w2 pixels in the width dimension and h2 pixels in the height dimension, where h2<w2.
A display system, comprising:
- a reflective display for rendering a first image viewable through a viewing surface;
- and
- a projection system including a light source, one or more optical elements, and a light modulator for rendering a second image viewable in reflection on the viewing surface, the second image having approximately the same width and height as the first image and being superimposed on and in registration with the first image to form a composite image, wherein pixels of the second image are mapped 1:1 onto pixels of the first image, and wherein the frame rate of the reflective display differs from that of the projection system by at least 10 percent.
Dependencies are inferred from the claim text.