Image-capturing apparatus with holding member for holding optical member

1. An image-capturing apparatus comprising:

a board configured to hold an image sensor;

a holding member configured to hold an optical member which is able to be inserted into and removed from an optical path; and

a sealing member configured to surround a periphery of a light receiving surface of the image sensor, the sealing member being provided between the board and the holding member,

wherein the sealing member includes a first sealing portion that contacts the board and a second sealing portion that contacts the holding member, and

wherein the holding member is inserted into an inside of a lens barrel from a direction orthogonal to an optical axis direction of an image-capturing lens through an opening portion provided on a side surface of the lens barrel.

2. The image-capturing apparatus according to claim 1 , wherein the first sealing portion seals a gap between the board and the lens barrel, and

wherein the second sealing portion seals a gap between the lens barrel and the holding member.

3. The image-capturing apparatus according to claim 1 , wherein the sealing member includes a plurality of engaged portions that engage with a plurality of engaging portions provided on the lens barrel.

4. The image-capturing apparatus according to claim 3 , wherein at least one of the plurality of engaged portions has an extending portion that extends in the optical axis direction, and

wherein an end of the extending portion is located outside an end of the lens barrel.

5. The image-capturing apparatus according to claim 3 , wherein at least one of the plurality of engaged portions has an extending portion that extends in the optical axis direction, and

wherein the extending portion has a convex shape.

6. The image-capturing apparatus according to claim 3 , wherein at least one of the plurality of engaged portions has an extending portion that extends in the optical axis direction, and

wherein the extending portion has an arch shape.

7. The image-capturing apparatus according to claim 3 , wherein at least one of the plurality of engaged portions has an extending portion that extends in the optical axis direction, and

wherein the lens barrel has a concave shape near the extending portion.

8. The image-capturing apparatus according to claim 1 , wherein the second sealing portion is formed so as to extend in a direction orthogonal to the optical axis direction and has a convex shape toward the optical axis direction, and

wherein the second sealing portion contacts the holding member with the second sealing portion being elastically deformed.

9. The image-capturing apparatus according to claim 8 , wherein the second sealing portion has a plate shape extending in the optical axis direction.

10. The image-capturing apparatus according to claim 8 , wherein the second sealing portion has a bellow shape extending in the optical axis direction.

11. The image-capturing apparatus according to claim 1 , wherein the second sealing portion applies a force acting on the holding member in a direction opposite to a direction in which the holding member is inserted through the opening portion.

12. The image-capturing apparatus according to claim 1 , wherein the second sealing portion is in sliding contact with the holding member by bending in a direction of inserting the holding member through the opening portion.

13. The image-capturing apparatus according to claim 1 , wherein the holding member holds the optical member so as to be insertable into and removable from an optical path by using an optical member holding frame that is movable in a direction orthogonal to the optical axis direction.

14. The image-capturing apparatus according to claim 1 , wherein a thickness of the first sealing portion and a thickness of the second sealing portion are thinner than a thickness of other portions of the sealing member.

15. The image-capturing apparatus according to claim 1 , wherein the sealing member is an elastic member.

16. The image-capturing apparatus according to claim 1 , wherein of the second sealing portion, a thickness of a vicinity of a contact surface contacting the holding member is thicker than a thickness of other portions of the second sealing portion.

17. The image-capturing apparatus according to claim 1 , wherein of the second sealing portion, a thickness of a vicinity of a contact surface contacting the holding member is thicker than a thickness of other portions of the second sealing portion, the vicinity being formed so as to extend in a direction orthogonal to a direction of inserting the holding member from an opening portion provided on a side surface of the lens barrel.