LIGHT-EMITTING ELEMENT, OPTICAL HEAD, AND IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide a light-emitting element on a light-receiving unit with an increase in size of the light-emitting element being suppressed.SOLUTION: Since a light-emitting unit 112 is provided in a light-emitting element 100, a substrate 80 to which the light-emitting element 100 is...

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Bibliographische Detailangaben
Hauptverfasser:	YONEYAMA HIROTO, NISHINO YOHEI, YAMAGUCHI YOSHINORI, MASHITA KIYOKAZU, ISHII TORU, MATSUMURA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MAGNETOGRAPHY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTING SELECTIVE PRINTING MECHANISMS SEMICONDUCTOR DEVICES STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light-emitting element on a light-receiving unit with an increase in size of the light-emitting element being suppressed.SOLUTION: Since a light-emitting unit 112 is provided in a light-emitting element 100, a substrate 80 to which the light-emitting element 100 is provided can be further reduced in size compared to a configuration to additionally provide a light-receiving unit (light-receiving sensor) outside the light-emitting element. Reflection light L1 reflected on an area W where reflection light does not go beyond a critical angle relative to an end face 122A is not emitted from the end face 122A. The light-receiving unit 112 is provided in the area W to measure the amount of light. Accordingly, the amount of light emitted from the end face 122A is not reduced even if the light-receiving unit 112 is provided in the area W.