A light controlling film comprises a light reflecting film and a light controlling layer that are laminated. The light reflecting film comprises at least two laminated light reflecting layers including at least one of light reflecting layers PRL-1 to PRL-3 that a central reflection wavelength of 400 nm-500 nm, 500 nm-600 nm, and 600 nm-700 nm, respectively, and a reflectance to ordinary light at the central reflection wavelength of 5%-25%. The at least two light reflecting layers have central reflection wavelengths that are different from each other. All of the at least two laminated light reflecting layers have a property of reflecting polarized light having the same orientation. The light controlling layer comprises two quarter wave plates, and the light reflecting film is laminated so as to be interposed between the two quarter wave plates.
Light reflecting film, and light controlling film, optical film, functional glass and head-up display including the light reflecting film
2019-03-26
Patent
Elektronische Ressource
Englisch
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... |
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