CIRCULAR PLANE LIGHT-EMITTING BODY

PURPOSE: To provide a plane light-emitting body which forms no part having ununiform light intensity such as shade in the peripherys of circular openings even when the circular openings are provided in a light transmission body. CONSTITUTION: This plane light emitting body is constituted of a disk-l...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OKURA TAKEO, SERA MIKIO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE: To provide a plane light-emitting body which forms no part having ununiform light intensity such as shade in the peripherys of circular openings even when the circular openings are provided in a light transmission body. CONSTITUTION: This plane light emitting body is constituted of a disk-like optical reflecting plate 1, a light transmission disk 2 arranged on the optical reflection surface side of the optical reflecting plate 1, an optical fiber bundle 3 having an optical incident end and an optical exit end, a container 4 for housing the optical exit end part of the optical fiber bundle 3, and a light source 5. The optical reflecting plate 1 and the light transmission disk 2 have plural through-holes 6 in the thickness direction, the optical incident end of the optical fiber bundle 3 is connected to a light source 5, and the optical exit end of the optical fiber flux 3 is arranged in the circumferential shape toward the central part of the light transmission disk 2 in the outer peripheral part of the light transmission disk 2. Further, the translucent disk arranged on the reflection surface side of the optical reflecting plate 1 via a space part having a specified width is arranged in place of the light transmission body 2 and optical exit end of the optical fiber bundle 3 is arranged in the outer periphery part of the space part.