OPTICAL DEVICE AND DIGITAL STILL CAMERA

PROBLEM TO BE SOLVED: To easily and effectively remove dust sticking to a light transmitting member. SOLUTION: This optical device has an aperture 5a for attaching/detaching a photographic lens 3, and is constituted so that photographic luminous flux transmitted through the attached lens 3 passes th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	EZAWA AKIRA, YAMADA HIROSHI, MOMOSE TOMONOBU
Format:	Patent
Sprache:	eng
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 ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To easily and effectively remove dust sticking to a light transmitting member. SOLUTION: This optical device has an aperture 5a for attaching/detaching a photographic lens 3, and is constituted so that photographic luminous flux transmitted through the attached lens 3 passes through an aperture 22 for photographing and is made incident on the light transmitting member 41, and the light transmitted through the effective transmission area of the member 41 is made incident on an imaging device 35. Then, the shape of the aperture 22 is decided so that at least a part of a non-effective transmission area is exposed from the aperture 22 in addition to the effective transmission area of the member 41 when the member 41 is seen from the aperture 5a through the aperture 22.