Focal plane shutter and optical apparatus
AssigneeSeiko Precision Inc.
InventorsSeiichi Oishi, Minori Murata, Hiroshi Takahashi, Shoichi Tokura
Life of this patent
Estimating the term…
Abstract
A focal plane shutter includes: a board including an opening; a shutter opening and closing the opening; a drive source driving the shutter; a drive lever driven by the drive source; a drive arm connected to the drive lever and driving the shutter; a restriction portion defining a stop position of the drive lever; and a buffering member elastically deformable, wherein, when the drive lever drives, abuts the restriction portion, and stops, at least one of the drive arm and the shutter temporarily abuts the buffering member, is spaced from the buffering member, and stops.
Claims6
A focal plane shutter, comprising:
- a board including an opening;
- a shutter opening and closing the opening;
- a drive source driving the shutter;
- a drive lever driven by the drive source;
- a drive arm connected to the drive lever and driving the shutter;
- a restriction portion defining a stop position of the drive lever;
- and
- a buffering member elastically deformable,
- wherein the drive lever drives, abuts the restriction portion, and stops,
- wherein when the drive lever is stopped,
- at least one of the drive arm and the shutter temporarily abuts the buffering member, is spaced from the buffering member, and stops,
- so that the at least one of the drive arm and the shutter stops and is spaced from the buffering member in a state where the drive lever stops and abuts the restriction portion.
An optical apparatus comprising a focal plane shutter, comprising:
- a board including an opening;
- a shutter opening and closing the opening;
- a drive source driving the shutter;
- a drive lever driven by the drive source;
- a drive arm connected to the drive lever and driving the shutter;
- a restriction portion defining a stop position of the drive lever;
- and
- a buffering member elastically deformable,
- wherein the drive lever drives, abuts the restriction portion, and stops,
- wherein when the drive lever is stopped,
- at least one of the drive arm and the shutter temporarily abuts the buffering member, is spaced from the buffering member, and stops,
- so that the at least one of the drive arm and the shutter stops and is spaced from the buffering member in a state where the drive lever stops and abuts the restriction portion.
Dependencies are inferred from the claim text.