WIDE ANGLE MIRROR SYSTEM

• Main Author: WEBER MICHAEL F
• Format: Patent
• Language: English; Japanese
• Published: 12.08.2016
• Subjects: 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; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To provide favorable composite mirror systems.SOLUTION: Composite mirror systems include a wideband thin film interference stack having a plurality of microlayers and an optically thick layer having a refractive index greater than that of the air but less than the smallest refractive index of the stack. The mirror systems can provide high reflectivity for light propagating in the stack and in the optically thick layer at supercritical angles, while avoiding degradation in reflectivity if dirt or other disturbances such as absorbing materials are present at the mirror backside, for example, due to contact with a support structure.SELECTED DRAWING: Figure 9 【課題】良好な複合ミラーシステムを提供すること。【解決手段】複合ミラーシステムは、複数のミクロ層と、を有するワイドバンドの薄いフィルム干渉スタックと、大気の屈折率より大きいがスタックの最小屈折率より小さい屈折率を有する光学的に厚い層とを含む。該ミラーシステムは、例えば、支持体構造と接触することによって、汚れまたは吸収材料などの他の障害がミラーの裏側に存在する場合、反射率の低下を避けつつ、超臨界角度で、スタック内と光学的に厚い層中を、光が伝播するための高い反射率を提供することができる。【選択図】図９