LIGHT SOURCE

PROBLEM TO BE SOLVED: To provide a light source having a high outward radiation efficiency in which contrast is prevented from lowering at the time of lighting or unlighting a light source while eliminating dark noise. SOLUTION: A lens type LED is mounted on a substrate and a light shielding member...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SUEHIRO YOSHINOBU, YASUKAWA TAKEMASA
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BASIC ELECTRIC ELEMENTS BLASTING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING PHYSICS SEALS SEMICONDUCTOR DEVICES SIGNS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light source having a high outward radiation efficiency in which contrast is prevented from lowering at the time of lighting or unlighting a light source while eliminating dark noise. SOLUTION: A lens type LED is mounted on a substrate and a light shielding member is disposed in the light emitting direction of the LED. Furthermore, an inner lens is disposed between the LED and the light shielding member. Light is radiated from the LED toward the inner lens and condensed light is radiated outward from a through port made in the light shielding member.