BACKLIGHT, MULTIVIEW BACKLIGHT, AND METHOD HAVING GLOBAL MODE MIXER

• Main Authors: FATTAL, David, A, LOWNEY, Joseph, D
• Format: Patent
• Language: English; French; German
• Published: 08.11.2023
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; WEAPONS

Examples disclosed herein include a plate light guide configured to guide light along a length of a light guide. The light guided along the length of the light guide propagates in at least two directional modes: a first directional mode and a second directional mode. Light guided in a first directional mode has one or both of a transverse component that is greater than and a vertical component that is less than respective transverse and vertical components of light guided in the second directional mode. Also included is a global mode mixer. The global mode mixer extends along the length of the light guide length and is configured to convert a portion of the light guided in a first directional mode into a second directional mode. A scattering element preferentially scatters light in the second directional mode out of the light guide.