LIGHT QUANTITY ADJUSTMENT DEVICE AND OPTICAL APPARATUS

The light-quantity control apparatus (10) includes a stop blade (3) including a stop portion (3a) and a supported portion (3b) rotatably supported with respect to a base member (1), a shutter blade (21, 22) having a shutter portion (21a, 22a) and a supported portion (21b, 22b) rotatably supported wi...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KUROSAWA, AKIRA, KOZU, SATOSHI, KAWAKUBO, NAOKI, SHIBATA, MITSUO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The light-quantity control apparatus (10) includes a stop blade (3) including a stop portion (3a) and a supported portion (3b) rotatably supported with respect to a base member (1), a shutter blade (21, 22) having a shutter portion (21a, 22a) and a supported portion (21b, 22b) rotatably supported with respect to the base member, and a driving member (2) disposed between the shutter and stop blades and rotating around the light-passing aperture to rotate the stop blade. The stop and shutter blades have tilts in their supported portions toward a same one side in the optical axis direction so that the stop and shutter portions are distant from the supported portions in the optical axis direction. The driving member has a shape concave toward the one side from its outer circumferential side portion to its inner circumferential side portion. A concave space (S) facing the light-passing aperture is formed inside than the stop and shutter blades and the driving member.