Image pickup unit, endoscope, and manufacturing method of image pickup unit
An image pickup unit includes: an image pickup module including an image sensor and a wiring board; a frame within which the image pickup module is housed and fixed; and a motion sensor fixed to an inner surface of the frame.
1 . An image pickup unit comprising:
an image pickup module including an image sensor and a wiring board;
a frame within which the image pickup module is housed and fixed; and
a motion sensor fixed to an inner surface of the frame;
wherein in one direction parallel to a light receiving surface of the image sensor, an outer dimension of the motion sensor is larger than an outer dimension of the wiring board, and
the wiring board comprises a first wiring board bonded to a rear surface of the image sensor and a second wiring board bonded to a rear surface of the first wiring board.
2 . The image pickup unit according to claim 1 , wherein the frame has a notch in a side surface to which the motion sensor is fixed.
3 . The image pickup unit according to claim 1 , further comprising:
a protection plate that is more rigid than the frame,
wherein the protection plate is disposed between the frame and the motion sensor.
4 . The image pickup unit according to claim 1 , wherein the frame includes a first member to which the motion sensor is fixed and a second member on which the image pickup module is placed.
5 . The image pickup unit according to claim 4 , wherein
the second member having a notch, and
the first member is plate-shaped and is fixed to the second member to cover the notch.
6 . An endoscope comprising:
an insertion portion configured to be inserted into a subject, and
the image pickup module according to claim 1 disposed in a distal end of the insertion section.
7 . The image pickup unit according to claim 1 , wherein the image sensor comprises a cover glass.
8 . The image pickup unit according to claim 1 , further comprising a sealing resin disposed within the frame.
9 . The image pickup unit according to claim 1 , wherein one or more of the first wiring board and the second wiring board being only connected to the motion sensor via the sealing resin.
10 . The image pickup unit according to claim 1 , wherein the frame has a rectangular cross-section in a direction perpendicular to a light receiving direction of the image pickup module.
11 . An image pickup unit comprising:
an image pickup module including an image sensor and a wiring board;
a frame within which the image pickup module is housed and fixed;
a motion sensor fixed to an inner surface of the frame; and
a protection plate that is more rigid than the frame,
wherein the protection plate is disposed between the frame and the motion sensor.
12 . The image pickup unit according to claim 11 , wherein
in one direction parallel to a light receiving surface of the image sensor, an outer dimension of the motion sensor is larger than an outer dimension of the wiring board, and
the wiring board comprises a first wiring board bonded to a rear surface of the image sensor and a second wiring board bonded to a rear surface of the first wiring board.
13 . The image pickup unit according to claim 11 , wherein the frame has a notch in a side surface to which the motion sensor is fixed.
14 . The image pickup unit according to claim 11 , wherein the frame includes a first member to which the motion sensor is fixed and a second member on which the image pickup module is placed.
15 . The image pickup unit according to claim 14 , wherein
the second member is a frame-shaped member having a notch, and
the first member is plate-shaped and is fixed to the second member to cover the notch.
16 . An endoscope comprising:
an insertion portion configured to be inserted into a subject, and
the image pickup module according to claim 11 disposed in a distal end of the insertion section.
17 . The image pickup unit according to claim 11 , wherein the image sensor comprises a cover glass.
18 . The image pickup unit according to claim 11 , further comprising a sealing resin disposed within the frame.
19 . The image pickup unit according to claim 11 , wherein one or more of the first wiring board and the second wiring board being only connected to the motion sensor via the sealing resin.
20 . The image pickup unit according to claim 11 , wherein the frame has a rectangular cross-section in a direction perpendicular to a light receiving direction of the image pickup module.