Scattering display for contrast enhancement including target
First Claim
Patent Images
1. A display comprising means having two states, one state for scattering incident light and a second state for transmitting incident light as a response to a prescribed input independent of the incident light, and focusing means for directing unscattered light transmitted through said scattering or transmitting means onto a light absorbing target means external to and on a non-viewing side of said scattering or transmitting means for enhancing the contrast of the display.
1 Assignment
0 Petitions
Accused Products
Abstract
A display comprising optical means for presenting an absence of light over a controlled viewing angle and means for selectively scattering or transmitting light in response to a prescribed input to effect a display of information within said viewing angle.
-
Citations
24 Claims
- 1. A display comprising means having two states, one state for scattering incident light and a second state for transmitting incident light as a response to a prescribed input independent of the incident light, and focusing means for directing unscattered light transmitted through said scattering or transmitting means onto a light absorbing target means external to and on a non-viewing side of said scattering or transmitting means for enhancing the contrast of the display.
-
6. A display, comprising:
-
means selectively operable for affecting light incident thereon and having two states, one state for scattering light and a second state for transmitting light in response to a prescribed input independent of the incident light; a target means located on a non-viewing side of said selectively operable means for absorbing light incident thereon; and a lens means disposed between said selectively operable means and said target means for directing light transmitted through said selectively operable means onto said target means to enhance the contrast of the display. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A method for contrast enhancement, comprising:
-
scattering or transmitting incident light by means of an electro-optical device as a response to a given electrical input independent of incident light, said electro-optical device having two states, a first state for scattering light and a second state for transmitting light; and focusing unscattered light transmitted through said electro-optical device onto a light absorbing target means external to and on a non-viewing side of said electro-optical device for enhancing contrast.
-
-
23. A display, comprising:
-
liquid crystal means operable for affecting light incident thereon and having two states, one state for scattering light and a second state for transmitting light in response to a prescribed input independent of the incident light; a target means located on a non-viewing side of said liquid crystal means for absorbing light incident thereon; and a plurality of cylindrical lenses disposed between said liquid crystal means and said target means for directing light transmitted through said liquid crystal means onto said target means to enhance the contrast of the display. - View Dependent Claims (24)
-
Specification