Shutter device and image-capturing apparatus

Patent metadata

Field	Value
Publication number	US-9995989-B2
Application number	US-201515521974-A
Country	US
Kind code	B2
Filing date	Oct 30, 2015
Priority date	Oct 31, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A shutter device includes: a substrate having an opening; a first light-shielding member that moves from a first position outside the opening of the substrate to a second position outside the opening to shield the opening, the second position being different from the first position; a second light-shielding member that partly shields the opening while moving from the first position to the second position; a first moving member that has a protrusion moving along a hole provided in the substrate to move the first light-shielding member; a second moving member that is coupled to the second light-shielding member and moves together with the second light-shielding member; and a third moving member, located outside a movement range of the protrusion during the second light-shielding member being located in the first position, that is coupled to the second light-shielding member and moves together with the second light-shielding member.

First claim

The invention claimed is:

1. A shutter device, comprising:
a substrate having an opening;
a first light-shielding member that moves from a first position outside the opening of the substrate to a second position outside the opening to shield the opening, the second position being different from the first position;
a second light-shielding member that partly shields the opening while moving from the first position to the second position;
a first moving member that has a protrusion moving along a hole provided in the substrate to move the first light-shielding member;
a second moving member that is coupled to the second light-shielding member and moves together with the second light-shielding member; and
a third moving member, located outside a movement range of the protrusion during the second light-shielding member being located in the first position, that is coupled to the second light-shielding member and moves together with the second light-shielding member.

2. The shutter device according to claim 1 , wherein:
the third moving member is curved so as to locate between a movement range of the first moving member and the opening while the second light-shielding member is located in the first position.

3. The shutter device according to claim 1 , wherein:
the second moving member and the third moving member constitute a parallel link mechanism for moving the second light-shielding member; and
the third moving member at least partly overlaps the second moving member.

4. The shutter device according to claim 3 , wherein:
each of the second moving member and the third moving member is coupled to the second light-shielding member on one of surfaces of the second light-shielding member; and
one of the second moving member and the third moving member has a step in an area where the members overlap each other.

5. The shutter device according to claim 3 , wherein:
the second moving member and the third moving member are coupled to the second light-shielding member on opposite surfaces of the second light-shielding member.

6. An image-capturing apparatus, comprising:
the shutter device according to claim 1 ; and
an image sensor that receives subject light through the shutter device.

Assignees

• Nikon Corp

Inventors

• Hasuda Masanori
• Ohashi Kenji
• Ueki Takeshi

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G03B9/18

  More than two members · CPC title

• H04N5/2254

  Electricity · mapped topic

• G03B9/36 Primary

  Sliding rigid plate · CPC title

• G03B9/42

  with adjustable slot; with mechanism controlling relative movement of plates to form slot · CPC title