LIGHT GUIDE WITH DIFFUSIVE LIGHT INPUT INTERFACE

• Main Authors: KOLLENGODE S NARAYANAN, RUSSELL WAYNE GRUHLKE, KEBIN LI, MIENKO MAREK, WANG LAI, DOUGLAS CARL BURSTEDT, ION BITA
• Format: Patent
• Language: English; Japanese
• Published: 03.09.2015
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BLASTING; CRYPTOGRAPHY; 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; DISPLAY; EDUCATION; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide systems, methods, and apparatus for providing illumination by using a light guide to distribute light.SOLUTION: A light guide 120 has a rough surface 140, such as an edge, into which light is injected. The rough surface 140 is treated to create a diffusive interface with a light source 130. The rough surface 140 may be subjected to abrasion to form a frosted surface that acts as the diffusive interface, or a diffusive structure is attached to the edge, with the attached diffusive structure functioning as the diffusive interface. The diffusive interface diffuses light entering the light guide 120, and thereby increases the uniformity of light propagating within the light guide 120. The light guide 120 may be provided with light turning features that redirect light out of the light guide 120. The redirected light may be applied to illuminate a display. 【課題】光を分散させるために光ガイドを使用することによって照明を与えるためのシステム、方法および装置を提供する。【解決手段】光ガイド１２０は、光がそれに注入される、エッジなど、粗表面１４０を有する。粗表面１４０は、光源１３０との拡散インターフェースを作成するように処理される。粗表面１４０は、拡散インターフェースとして働くつや消し表面を形成するために削摩にかけられるか又はエッジに拡散構造が取り付けられ、取り付けられた拡散構造が拡散インターフェースとして機能する。拡散インターフェースは、光ガイド１２０に入る光を拡散させ、それにより、光ガイド１２０内を伝搬する光の均一性を高める。光ガイド１２０は、光ガイド１２０から光をリダイレクトする光転向フィーチャを備える。リダイレクトされた光は、ディスプレイを照明するために適用され得る。【選択図】図１０