Tiled light guide with deflection structures

• Main Authors: Wooster, Roland P, Zhuang, Zhiming, Jiang, Jun, Glendinning, Duncan
• Format: Patent
• Language: English
• Published: 03.07.2018
• Subjects: BLASTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

Techniques and mechanisms for providing illumination of a display. In an embodiment, a light guide includes a first portion to receive light, a second portion to output some or all of the light, and a third portion configured to propagate the light between the first portion and the second portion. The third portion forms a first deflection structure which adjoins, and extends between, respective surface regions of the first portion and the second portion. A light source is coupled to provide edgewise illumination of the light guide via the first portion. In another embodiment, the light propagates through the third portion and into a region, between two parallel planes, in which the second portion is located.