Title:
カメラ対物レンズのセントラルシャッタ
Document Type and Number:
Japanese Patent JP5520319
Kind Code:
B2
Abstract:
A central shutter for camera objectives, said central shutter having a ring-shaped leaf carrier (1) surrounding the shutter aperture (2), on which leaf carrier at least two studs (13) are disposed arranged in a circularly symmetrical manner in relation to each other, on which studs sickle-shaped shutter leaves (14) are pivotably mounted, and having an electric motor drive pivoting the shutter leaves (14) over the shutter aperture (2), is distinguished in that the drive includes a motorized rotatable winding ring (3) which is realized as a flat ring disk and rests on the leaf carrier (1), a cam ring (7) realized as a flat ring disk is rotatably mounted in the winding ring (3), sawtooth-shaped cams (17) being provided on a ring surface thereof, wherein the winding ring (3) and the cam ring (7) are coupled to each other by means of at least one tension spring (9) that can be tensioned in the direction of rotation of the winding ring (3) and the pivoting movement of the shutter leaves (14) can be controlled by coupling to the cam ring (7).
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Inventors:
Arp, Constantine
Application Number:
JP2011548586A
Publication Date:
June 11, 2014
Filing Date:
February 02, 2010
Export Citation:
Assignee:
Leica camera Achengezel shaft
International Classes:
G03B9/10; G03B9/22
Domestic Patent References:
| JP2006220946A | ||||
| JP34010236B1 | ||||
| JP36020832B1 | ||||
| JP2007264645A |
Foreign References:
| GB1036974A |
Attorney, Agent or Firm:
Kato Asamichi
Kiuchi Uchida
Mitsuru Aoki
Kiuchi Uchida
Mitsuru Aoki