OPTICAL DEVICE

There is provided an optical device which realizes sufficient contrast or visibility, with a simple configuration. The optical device includes: a light guiding layer; a first optically functional layer provided on a first principal face of the light guiding layer; a second optically functional layer...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	RINKO, Kari, MIYATAKE, Minoru, NAKAMURA, Kozo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	There is provided an optical device which realizes sufficient contrast or visibility, with a simple configuration. The optical device includes: a light guiding layer; a first optically functional layer provided on a first principal face of the light guiding layer; a second optically functional layer provided on a second principal face of the light guiding layer that is on an opposite side to the first principal face; and an optical medium layer provided on a surface of the second optically functional layer that is on an opposite side to the light guiding layer. A refractive index of the first optically functional layer is lower than a refractive index of the light guiding layer.