JPWO2020174876A1 - Lens barrel and image pickup device - Google Patents

Abstract

An outer cylinder whose axial direction is oriented toward the optical axis and an internal space is formed as an arrangement space and whose end on the subject side is provided as a fixing end, and an annular lens holder which is arranged in the arrangement space and holds a lens. The lens is provided with a portion, a fixing portion fixed to the fixing end portion, and an elastic body formed in an annular shape having an elastically deformable pressing portion located in the arrangement space, and the pressing portion is the lens. It is pressed against the outer peripheral surface of the holding portion. As a result, the gap between the outer cylinder and the lens holding portion is sealed by the elastic body, and it becomes difficult to recognize the difference in the size of the gap in the circumferential direction when the lens barrel is visually recognized from the subject side, and the lens barrel and the outer cylinder are difficult to recognize. Since dust and moisture do not enter between the lens holding portions, it is possible to improve the appearance quality and the dustproof and drip-proof performance. [Selection diagram] Fig. 2

Description

The present art relates to a technical field of a lens barrel and an image pickup apparatus in which a lens holding portion for holding a lens is arranged inside an outer cylinder.

Japanese Unexamined Patent Publication No. 2006-20125

Various image pickup devices such as video cameras and still cameras are provided with a lens barrel that captures an optical image via a shooting optical system such as a lens, and the lens barrel is configured to have a plurality of lens groups arranged in the optical axis direction. There is something that has been done. Further, the image pickup apparatus is not provided with a lens barrel, and an interchangeable lens or the like attached to and detachable from the image pickup apparatus may be used as the lens barrel.

In such a lens barrel, a group of lens barrels that hold the lens by attaching an annular sealing material by compressing it in the optical axis direction with a decorative ring in order to prevent dust and water from entering the inside. Some fill the gap between the (lens holding portion) and the filter frame (outer cylinder) (see, for example, Patent Document 1).

By the way, in the lens barrel, in order to ensure optical performance, for example, a shift adjustment may be performed to adjust the position of the lens with respect to the outer cylinder to an appropriate position orthogonal to the optical axis, and the shift adjustment is performed by the lens. This is done by shifting the held lens holding portion in a direction orthogonal to the optical axis with respect to the outer cylinder.

Therefore, as a result of the shift adjustment, the optical axis of the lens is displaced in the radial direction with respect to the central axis of the outer cylinder, and the gap between the outer cylinder and the lens holding portion is partially different in the circumferential direction. The appearance quality when the cylinder is visually recognized from the subject side may be impaired.

Further, in the lens barrel, the size of the gap may be partially different in the circumferential direction due to the tolerance of parts in manufacturing, and such a state may also contribute to the deterioration of the appearance quality.

On the other hand, since the gap between the outer cylinder and the lens holding portion can be a path for dust and moisture to enter the lens barrel from the outside, it is also necessary to take dustproof and waterproof measures for the lens barrel. ..

Therefore, the purpose of the lens barrel and the image pickup apparatus of the present technology is to overcome the above-mentioned problems, improve the appearance quality, and improve the dust-proof and drip-proof performance.

First, the lens barrel according to the present technology includes an outer cylinder whose axial direction is oriented toward the optical axis and an internal space is formed as an arrangement space, and an outer cylinder having an end on the subject side as a fixing end. It has an annular lens holding portion that is arranged in the arrangement space and holds the lens, a fixing portion that is fixed to the fixing end portion, and a pressing portion that is elastically deformable and pressed against the outer peripheral surface of the lens holding portion. It is provided with an elastic body formed in an annular shape.

As a result, the gap between the outer cylinder and the lens holding portion is sealed by the elastic body, and it becomes difficult to recognize the difference in the size of the gap in the circumferential direction when the lens barrel is visually recognized from the subject side.

Secondly, in the lens barrel described above, it is desirable that the fixing portion is provided with at least a first portion fixed to the tip surface of the fixing end portion.

As a result, the tip surface of the outer cylinder is covered with the first portion.

Third, in the lens barrel described above, the fixing portion is provided with a first portion that covers the tip surface of the fixing end portion and a second portion that is fixed to the outer peripheral surface of the fixing end portion. It is desirable to be.

As a result, since the second portion is fixed to the outer peripheral surface of the fixing end portion, it is possible to increase the fixing range of the elastic body with respect to the outer cylinder.

Fourth, in the lens barrel described above, a portion of the elastic body between the pressing portion and the fixing portion is provided as a connecting portion located in the arrangement space, and is provided with the inner peripheral surface of the outer cylinder. It is desirable that a filler is provided between the connecting portion and the connecting portion.

As a result, the space between the connecting portion and the fixing end is filled with the filler.

Fifth, in the lens barrel described above, it is desirable that the inner peripheral surface of the outer cylinder and the outer peripheral surface of the connecting portion are adhered to the filler.

As a result, the outer cylinder and the pressing portion are adhered to each other via the filler.

Sixth, in the lens barrel described above, the portion between the pressing portion and the fixing portion in the elastic body is provided as a connecting portion located in the arrangement space, and the connecting portion is provided in the elastic body. It is desirable to provide an annular protrusion that protrudes from the inner circumference side.

This makes it possible to cover the lens holding portion from the subject side by the protrusion.

Seventh, in the lens barrel described above, the pressing portion is continuous with a contact portion pressed against the outer peripheral surface of the lens holding portion and one end of the contact portion on the opposite side to the subject. On the other hand, it is desirable to provide a bent portion bent in a direction approaching the inner peripheral surface of the outer cylinder.

As a result, when the coupling ring is assembled to the base cylinder in the optical axis direction, the bent portion functions as a guided portion guided to the tip of the lens holding portion.

Eighth, in the above-mentioned lens barrel, the lens holding portion has an annular lens frame and the holding ring whose end portion on the subject side is positioned on the subject side from the lens frame by pressing the lens against the lens frame. It is desirable to have the pressing portion and press the pressing portion against the outer peripheral surface of the pressing ring.

This makes it possible to position the pressing portion closer to the central axis side of the outer cylinder in the arrangement space.

Ninth, the image pickup apparatus according to the present technology includes a lens barrel that captures an optical image and an image pickup element that converts the captured optical image into an electrical signal, and the lens barrel has an axial direction in the optical axis direction. An outer cylinder whose internal space is formed as an arrangement space and whose end on the subject side is provided as a fixing end, an annular lens holding portion which is arranged in the arrangement space and holds a lens, and the fixing portion. It is provided with a fixed portion fixed to an end portion and an elastic body formed in an annular shape having a pressing portion that is elastically deformable and pressed against the outer peripheral surface of the lens holding portion.

As a result, the gap between the outer cylinder and the lens holding portion is sealed by the elastic body, and it becomes difficult to recognize the difference in the size of the gap in the circumferential direction when the lens barrel is visually recognized from the subject side.

FIGS. 2 to 14 show an embodiment of the lens barrel of the present technology and the image pickup apparatus, and this figure is a perspective view of the image pickup apparatus showing the lens barrel and the apparatus main body separately. It is an enlarged sectional view which shows a part of a lens barrel. It is an enlarged sectional view which shows the state which the gap between a fixing end portion and an elastic body is reduced. It is an enlarged sectional view which shows the state which the gap between a fixing end portion and an elastic body is enlarged. It is an enlarged sectional view which shows the state which the pressing part is pressed against the lens frame. It is an enlarged cross-sectional view which shows the state before the coupling ring and the like are assembled to a base cylinder. It is an enlarged sectional view which shows the 1st structural example about an elastic body. It is an enlarged sectional view which shows the 2nd structural example about an elastic body. It is an enlarged sectional view which shows the 3rd structural example about an elastic body. It is a block diagram of an image pickup apparatus. It is a figure which shows an example of the schematic structure of an endoscopic surgery system. It is a block diagram which shows an example of the functional structure of the camera head and CCU shown in FIG. It is a block diagram which shows an example of the schematic structure of a vehicle control system. It is explanatory drawing which shows an example of the installation position of the vehicle outside information detection unit and the image pickup unit.

Hereinafter, embodiments for implementing the present technology will be described with reference to the attached drawings.

In the embodiment shown below, the present technology imaging device is applied to a still camera, and the present technology lens barrel is applied to an interchangeable lens that can be attached to and detached from the main body of the still camera.

The scope of application of this technology is not limited to still cameras and interchangeable lenses that can be attached to and detached from the main body of the still camera. This technology can be widely applied to, for example, a lens barrel such as a lens unit composed of various image pickup devices incorporated in a video camera or other device as an image pickup device, and a lens group provided in these image pickup devices. can.

In the following description, it is assumed that the front-back, up-down, left-right directions are shown in the direction seen by the photographer when shooting with the still camera. Therefore, the subject side is the front and the photographer side is the rear.

The directions shown below in the front, back, up, down, left, and right directions are for convenience of explanation, and the implementation of the present technology is not limited to these directions.

Further, the lens group shown below may be composed of a single or a plurality of lenses, or may include these single or a plurality of lenses and other optical elements such as an aperture and an iris.

<Configuration of image pickup device>
The image pickup apparatus 100 is composed of an apparatus main body 200 and a lens barrel 1 (see FIG. 1). The lens barrel 1 is, for example, an interchangeable lens that can be attached to and detached from the apparatus main body 200. In addition, this technology is also applicable to the type in which a lens unit having the same structure as the internal structure of the lens barrel 1 is incorporated in the main body of the device, and the retractable type in which this lens unit protrudes or is stored with respect to the main body of the device. It is possible to apply.

The apparatus main body 200 is formed by arranging necessary parts inside and outside the outer casing 201.

In the outer casing 201, for example, various operation units 202, 202, ... Are arranged on the upper surface and the rear surface. The operation units 202, 202, ... Are provided with, for example, a power button, a shutter button, a zoom knob, a mode switching knob, and the like.

A display (display unit) (not shown) is arranged on the rear surface of the outer casing 201.

A circular opening 201a is formed on the front surface of the outer casing 201, and a portion around the opening 201a is provided as a mount portion 203 for mounting the lens barrel 1.

An image pickup device 204 such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor) is arranged inside the outer casing 201, and the image pickup device 204 is located behind the opening 201a.

<Structure of lens barrel>
The lens barrel 1 is composed of a substantially cylindrical outer cylinder 2 whose axial direction is oriented in the front-rear direction and necessary parts attached or supported inside and outside the outer cylinder 2 (see FIGS. 1 and 2).

The outer cylinder 2 has a base cylinder 3 formed in a substantially cylindrical shape and a coupling ring 4 bonded to the front end portion of the base cylinder 3. The internal space of the outer cylinder 2 is formed as an arrangement space 2a.

A plurality of lens groups located apart from each other in the optical axis direction are arranged in the arrangement space 2a in the lens barrel 1, and the lens groups are a movable group that can move in the optical axis direction and a fixed group that cannot move in the optical axis direction. It is composed of and. One of the lens groups may be provided as a shift lens group that can move in a direction orthogonal to the optical axis direction in order to perform blur correction.

The operation rings 5 and 5 are rotatably supported on the outer peripheral side of the base cylinder 3. By rotating the operation ring 5, for example, manual zooming or manual focusing can be performed. At the rear end of the base cylinder 3, mounting protrusions 6, 6 and 6 are provided apart from each other in the circumferential direction. The lens barrel 1 is attached to the apparatus main body 2 by engaging the mounting protrusions 6, 6 and 6 with the mounting portion 203.

A portion of the outer peripheral surface of the base cylinder 3 near the front end is formed as a screwed portion 3a.

The coupling ring 4 is provided with a front end portion as a fixing end portion 7 and a rear end portion provided as a coupling end portion 8. The fixing end portion 7 is located on the inner peripheral side of the coupling end portion 8, that is, on the central axis side of the coupling ring 4. The coupling end 8 of the coupling ring 4 is coupled to the base cylinder 3 from the outer peripheral side. The rear end portion on the inner peripheral surface of the coupling end portion 8 is formed as a screw groove portion 8a.

An elastic body 9 is fixed to the fixing end portion 7. The elastic body 9 is formed in an annular shape by, for example, a rubber material. The elastic body 9 may be formed of a material having elasticity other than the rubber material.

The elastic body 9 is formed by integrally forming the fixing portion 10, the connecting portion 11, and the pressing portion 12, and the fixing portion 10, the connecting portion 11, and the pressing portion 12 are continuously formed in this order.

The fixing portion 10 is composed of a first portion 13 located on the front side and a second portion 14 projecting substantially rearward from the outer peripheral portion of the first portion 13, and the width of the second portion 14 in the front-rear direction. Is larger than the radial width of the first portion 13. The width of the fixing portion 10 in the front-rear direction is substantially the same as the width of the fixing end portion 7 in the coupling ring 4 in the front-rear direction.

The connecting portion 11 is a portion that connects the first portion 13 of the fixing portion 10 and the pressing portion 12, and projects substantially rearward from the inner peripheral portion of the first portion 13. Therefore, the connecting portion 11 is located on the inner peripheral side of the second portion 14 of the fixed portion 10.

The pressing portion 12 is continuously provided at the rear end of the connecting portion 11, is continuously provided at the rear end of the contact portion 15 and the contact portion 15 continuous with the connecting portion 11, and is bent toward the fixed portion 10 with respect to the contact portion 15. It is composed of a bent portion 16. The pressing portion 12 and the connecting portion 11 are located on the inner peripheral side of the fixed portion 10, and the pressing portion 12 is located on the inner peripheral side of the rear end of the fixed portion 10. An insertion space 9a is formed between the pressing portion 12 and the connecting portion 11 and the fixing portion 10.

The elastic body 9 is fixed to the fixing end portion 7 by adhesion or the like in a state where the inner peripheral surface 14a of the second portion 14 of the fixing portion 10 is in contact with the outer peripheral surface 7a of the fixing end portion 7 of the coupling ring 4. Will be done. In the state where the elastic body 9 is fixed to the fixing end portion 7, the fixing end portion 7 is inserted into the insertion space 9a, and the front side and the outer periphery are respectively provided by the first portion 13 and the second portion 14 of the fixing portion 10. The fixing end 7 is covered from the side, and the fixing end 7 is covered from the inner peripheral side by the connecting portion 11 and the pressing portion 12. A gap is formed in the insertion space 9a between the fixing end portion 7, the connecting portion 11 and the pressing portion 12, and the connecting portion 11 and the pressing portion 12 are elastically deformed in a direction approaching the fixing portion 10 by this gap. Be made possible.

As described above, in the lens barrel 1, the fixed portion 10 is provided with the first portion 13 and the second portion 14. Therefore, since the tip surface 7b of the fixing end portion 7 is covered by the first portion 13 and the second portion 14 is fixed to the outer peripheral surface 7a of the fixing end portion 7, the elastic body 9 with respect to the outer cylinder 2 is fixed. The fixed range can be increased, the outer cylinder 2 can be sufficiently protected when a drop or an impact occurs, and the elastic body 9 can be prevented from falling off from the outer cylinder 2.

In addition to the second portion 14, the elastic body 9 may have the first portion 13 fixed to the fixing end portion 7. In this case, the first portion 13 is fixed to the tip surface 7b of the fixing end portion 7 by adhesion or the like.

By fixing both the first portion 13 and the second portion 14 to the fixing end portion 7 in this way, the fixed area of the fixing portion 10 with respect to the fixing end portion 7 becomes large, and the elastic body 9 has a large fixed area. The fixing strength to the fixing end portion 7 can be increased.

A lens holding portion 17 is arranged in the arrangement space 2a of the outer cylinder 2. The lens holding portion 17 has a lens frame 18 and a holding ring 19, and the holding ring 19 is connected to the lens frame 18 by, for example, being screwed.

The lens frame 18 has a base portion 20 that faces substantially the front-rear direction and a peripheral surface portion 21 that protrudes forward from the outer peripheral portion of the base portion 20. A light transmission hole 20a is formed in the base portion 20 except for the outer peripheral portion. A screwed portion 21a is formed on the inner peripheral surface of the peripheral surface portion 21.

The holding ring 19 is formed in a substantially cylindrical shape, and a screwed portion 19a is formed in a portion of the outer peripheral surface near the rear end. The front end portion of the outer peripheral surface of the pressing ring 19 is formed as a pressed surface 19b.

The lens 22 is held in the lens holding portion 17. The lens 22 corresponds to the frontmost lens group arranged in the arrangement space 2a.

The lens 22 is held by being sandwiched between the lens frame 18 and the holding ring 19 by the lens holding portion 17. In the holding of the lens 22 by the lens holding portion 17, the holding ring 19 is rotated while the lens 22 is pressed against the front surface of the outer peripheral portion of the base portion 20, and the screwed portion 19a is screwed onto the screwed portion 21a of the lens frame 18. By being combined, the pressing ring 19 is moved in a direction approaching the lens 22, and the rear surface of the pressing ring 19 is pressed against the front surface of the outer peripheral portion of the lens 22. Therefore, the outer peripheral portion of the lens 22 is sandwiched between the rear surface of the holding ring 19 and the front surface of the base portion 20, and is held by the lens holding portion 17. Further, the outer peripheral surface of the lens 22 is pressed by the inner peripheral surface of the peripheral surface portion 21 and held by the lens holding portion 17. By sandwiching an annular spacer between the base portion 20 and the lens 22, the position of the lens 22 in the optical axis direction can be adjusted.

The contact portion 15 of the pressing portion 12 of the elastic body 9 is pressed from the outside against the pressed surface 19b of the pressing ring 19 of the lens holding portion 17. In the elastic body 9, the connecting portion 11 and the pressing portion 12 can be elastically deformed with respect to the fixed portion 10, and the contact portion 15 is elastically deformed to the fixed portion 10 side, and the inner peripheral surface 15a becomes the pressed surface 19b. It is pressed. Therefore, the contact portion 15 is pressed against the pressed surface 19b with the inner peripheral surface 15a in close contact with the pressed surface 19b on the entire circumference.

In a state where the inner peripheral surface 15a of the contact portion 15 is pressed against the pressed surface 19b of the pressing ring 19, the connecting portion 11 is inclined toward the central axis of the outer cylinder 2 as it goes backward.

<Action of elastic body on lens holding part>
As described above, the lens holding portion 17 is arranged in the arrangement space 2a of the outer cylinder 2, but in the lens barrel 1, the position of the lens 22 with respect to the outer cylinder 2 is set as the optical axis in order to secure the optical performance. Shift adjustment is performed to adjust to the proper position at right angles. The shift adjustment is performed by displacing the lens holding portion 17 holding the lens 22 in the direction orthogonal to the optical axis with respect to the outer cylinder 2.

As a result of the shift adjustment, the optical axis of the lens 22 may shift in the radial direction with respect to the central axis of the outer cylinder 2, but the optical axis of the lens 22 may deviate in the radial direction with respect to the central axis of the outer cylinder 2. In the case of deviation, the gap P between the outer cylinder 2 and the lens holding portion 17 is partially different in the circumferential direction (see FIGS. 3 and 4). In addition, in FIGS. 3 and 4, in order to facilitate understanding, the upper gap P and the lower gap P are in a state where the gap P between the outer cylinder 2 and the lens holding portion 17 is partially different in the circumferential direction. It is exaggerated to make a big difference.

Further, in the lens barrel 1, the size of the gap P between the outer cylinder 2 and the lens holding portion 17 may be partially different in the circumferential direction depending on the component tolerance in manufacturing.

However, in the lens barrel 1, as described above, the inner peripheral surface 15a of the contact portion 15 of the elastic body 9 is formed on the pressed surface 19b of the pressing ring 19 in the lens holding portion 17 from the outside to the entire circumference of the pressing surface 19b. It is pressed in close contact with the lens. Therefore, when the gap P is sealed by the elastic body 9 and the lens barrel 1 is visually recognized from the subject side, the inclination angle of each portion in the circumferential direction of the connecting portion 11 is different, so that the gap P is a portion in the circumferential direction. It is difficult to recognize the different states as an appearance, and it is difficult to recognize the difference in the size of the gap P in the circumferential direction when the lens barrel 1 is visually recognized from the subject side.

Further, since the gap P is sealed by the elastic body 9, the gap P does not serve as a path for dust and moisture to enter the lens barrel 1 from the outside, and dust is prevented from between the outer cylinder 2 and the lens holding portion 17. And moisture do not enter.

<Summary>
As described above, in the lens barrel 1, the fixed portion 10 fixed to the fixing end portion 7 which is the end portion on the subject side of the outer cylinder 2 and the pusher which is located in the arrangement space 2a and can be elastically deformed. An elastic body 9 having the portion 12 and formed in an annular shape is provided, and the pressing portion 12 is pressed against the outer peripheral surface of the lens holding portion 17.

Therefore, the gap P between the outer cylinder 2 and the lens holding portion 17 is sealed by the elastic body 9, and it is difficult to recognize the difference in the size of the gap P in the circumferential direction when the lens barrel 1 is visually recognized from the subject side. , It is possible to improve the appearance quality.

Further, since the gap P is sealed by the elastic body 9, dust and moisture do not enter between the outer cylinder 2 and the lens holding portion 17, and the dustproof and drip-proof performance can be improved.

Further, since a decorative ring for covering the gap P from the subject side is not required in addition to the sealing material for sealing the gap P, the number of parts is reduced, the appearance quality is improved, and the dustproof and drip-proof. Performance can be improved.

Furthermore, since the appearance quality is not deteriorated even when the shift adjustment for adjusting the position of the lens 22 with respect to the outer cylinder 2 is performed, the optical performance by the shift adjustment is improved after improving the appearance quality. It can be improved.

In addition, in general, the outer peripheral surface of the pressing ring 19 is often located inside the outer peripheral surface of the lens frame 18, and the pressing portion is pressed against the pressing ring 19 whose outer peripheral surface is located inside the outer peripheral surface of the lens frame 18. Since the 12 is pressed against the lens, the pressing portion 12 can be positioned closer to the central axis side of the outer cylinder 2 in the arrangement space 2a, and the lens barrel 1 can be miniaturized.

Although the example in which the pressing portion 12 is pressed against the pressing ring 19 is shown above, there is also a configuration in which the entire pressing ring 19 is located inside the lens frame 18 in the lens barrel 1. In such a configuration, the pressing portion 12 may be pressed against the outer peripheral surface of the lens frame 18 (see FIG. 5). Further, even in a configuration in which a part of the pressing ring 19 is located on the front side of the lens frame 18 (see FIG. 2), the length of the connecting portion 11 in the front-rear direction is increased so that the pressing portion is pressed against the outer peripheral surface of the lens frame 18. It is also possible to have a configuration in which the 12 is pressed against.

Further, in order to increase the elastic force of the elastic body 9, it is desirable that the position of the pressing portion 12 in the front-rear direction is positioned more rearward, and in order to have such a configuration, the outer cylinder 2 is provided. It is desirable that the distance L (see FIG. 2) from the front end to the front end of the holding ring 19 is long.

<Assembly of elastic body in lens barrel>
In the lens barrel 1, for example, in order to perform good assembly work between the outer cylinder 2, the elastic body 9, and the lens holding portion 17, for example, the lens holding portion 17 in which the lens 22 is held inside the base cylinder 3 The coupling ring 4 to which the elastic body 9 is fixed is assembled to the base cylinder 3 from the front (see FIG. 6).

When the coupling ring 4 is assembled to the base cylinder 3 from the front side, for example, the coupling ring 4 is rotated and the threaded groove portion 8a is screwed into the screwed portion 3a of the base cylinder 3, so that the coupling ring 4 is attached to the base cylinder 3. Be combined.

At this time, at the same time, the pressing portion 12 of the elastic body 9 comes into contact with the front end of the pressing ring 19, but the pressing portion 12 is provided with a bent portion 16 bent toward the fixed portion 10 with respect to the contact portion 15. Therefore, the bent portion 16 is guided to the front end of the pressing ring 19, and the contact portion 15 rides on the outer peripheral surface of the pressing ring 19. Therefore, the contact portion 15 is pressed against the pressed surface 19b of the pressing ring 19 from the outside.

As described above, since the elastic body 9 is provided with the bent portion 16 bent toward the fixed portion 10 with respect to the contact portion 15, the bent portion 16 serves as a guided portion guided to the tip of the lens holding portion 17. It functions and can properly and quickly assemble the outer cylinder 2, the elastic body 9, and the lens holding portion 17.

<Other configuration examples>
Hereinafter, other configuration examples relating to the elastic body 9 will be described (see FIGS. 7 to 9).

The first configuration example is an example in which the elastic body 9A to which the second portion 14 is not provided is used instead of the elastic body 9 (see FIG. 7). Therefore, in the elastic body 9A, the fixing portion 10A is composed of only the first portion 13, and the first portion 13 is fixed to the tip surface 7b of the fixing end portion 7.

As described above, in the elastic body 9A, since the fixing portion 10A is composed of only the first portion 13 and the first portion 13 is fixed to the tip surface 7b of the fixing end portion 7, the tip surface of the outer cylinder 2 is the first. It is covered by the portion 13 of 1, and the outer cylinder 2 can be protected when a drop, an impact, or the like occurs.

Further, since the fixed portion 10A is composed of only the first portion 13, the manufacturing cost of the elastic body 9A is reduced, and the elastic body 9A has a simple configuration, so that the manufacturing cost can be reduced and the configuration can be simplified. After making efforts, it is possible to improve the appearance quality and the dustproof and drip-proof performance.

The second configuration example is an example in which the filler 30 is arranged between the connecting portion 11 of the elastic body 9 and the inner peripheral surface 7c of the fixing end portion 7 in the coupling ring 4 (see FIG. 8).

As the filler 30, a material having a cushioning property, for example, a rubber material, a urethane material, or the like is used.

By arranging the filler 30 between the connecting portion 11 and the inner peripheral surface 7c of the fixing end portion 7 in this way, the insertion space 9a formed between the connecting portion 11 and the fixing end portion 7 is formed. Since it is filled with the filler 30, the elastic force of the elastic body 9 with respect to the outer cylinder 2 is reinforced by the filler 30. Therefore, it is possible to prevent the connecting portion 11 from being excessively deformed and to secure a good pressing state of the pressing portion 12 against the lens holding portion 17.

Further, in the above-mentioned second configuration example, the inner peripheral surface 11a of the connecting portion 11 and the inner peripheral surface 7c of the fixing end portion 7 may be adhered to the filler 30 by, for example, double-sided tape.

Since the inner peripheral surface 11a of the connecting portion 11 and the inner peripheral surface 7c of the fixing end portion 7 are adhered to the filler 30, the outer cylinder 2 and the pressing portion 12 are adhered to each other via the filler 30. The elastic body 9 is less likely to be displaced in a direction away from the inner peripheral surface of the outer cylinder 2, and the pressing portion 12 can be held in the arrangement space 2a in a stable state.

The third configuration example is an example in which the elastic body 9 is provided with an annular protrusion 40 protruding inward from the connecting portion 11 (see FIG. 9).

The holding ring 19 of the lens holding portion 17 has a function of holding the lens 22 together with the lens frame 18, and the holding ring 19 is rotated with respect to the lens frame 18 so that the screwed portion 19a is screwed into the screwing portion 21a. Is pressed against the front surface of the lens 22. Therefore, in a state where the lens 22 is held by the lens frame 18 and the holding ring 19, if the user inserts his / her hand into the outer cylinder 2 and operates the holding ring 19, the lens frame 18 and the holding ring 19 of the lens 22 are held. The holding state by the ring 19 may be released.

Therefore, as described above, since the elastic body 9 is provided with the annular protrusion 40 protruding from the connecting portion 11 to the inner peripheral side, the holding ring 19 can be covered from the subject side by the protrusion 40. The holding ring 19 becomes difficult to touch, and the holding ring 19 can be held at an appropriate position with respect to the lens frame 18 to prevent the holding state of the lens 22 from being released by the lens holding portion 2.

<Others>
In the above, the lens holding portion 17 is configured to have the lens frame 18 and the holding ring 19, but the lens holding portion 17 may be integrally formed with the lens frame 18 and the holding ring 19.

However, since the lens holding portion 17 has the lens frame 18 and the holding ring 19, the lens 22 can be replaced by rotating the holding ring 19 with respect to the lens frame 18 and removing the holding ring 19 from the lens frame 19. Therefore, it is possible to improve maintainability.

<One Embodiment of the Imaging Device>
Hereinafter, a configuration example of an embodiment of the image pickup apparatus of the present technology will be described (see FIG. 10).

The image pickup apparatus 100 includes a lens barrel 1 that has an image pickup function, a camera signal processing unit 81 that performs signal processing such as analog-digital conversion of the captured image signal, and an image processing unit 82 that performs recording / reproduction processing of the image signal. And have. Further, the image pickup device 100 includes a display unit (display) 83 for displaying a captured image and the like, an R / W (reader / writer) 84 for writing and reading an image signal to the memory 90, and an image pickup device 100. A CPU (Central Processing Unit) 85 that controls the entire lens, an operation unit 202 such as various switches that perform required operations by the user, and a lens drive control unit that controls the drive of the lens arranged in the lens barrel 1. It is equipped with 86.

The image pickup device 100 is provided with an image pickup device 204 such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor) that converts an optical image captured by the lens barrel 1 into an electrical signal.

The camera signal processing unit 81 performs various signal processing such as conversion of the output signal from the image pickup element 204 into a digital signal, noise removal, image quality correction, and conversion into a brightness / color difference signal.

The image processing unit 82 performs compression coding / decompression decoding processing of an image signal based on a predetermined image data format, conversion processing of data specifications such as resolution, and the like.

The display unit 83 has a function of displaying various data such as an operation state of the user's operation unit 202 and a captured image. The image pickup device 100 may not be provided with the display unit 83, and may be configured so that the captured image data is sent to another display device and the image is displayed.

The R / W 84 writes the image data encoded by the image processing unit 82 to the memory 90 and reads the image data recorded in the memory 90.

The CPU 85 functions as a control processing unit that controls each circuit block provided in the image pickup apparatus 100, and controls each circuit block based on an instruction input signal or the like from the operation unit 202.

The operation unit 202 outputs an instruction input signal corresponding to the operation by the user to the CPU 85.

The lens drive control unit 86 controls a drive source for moving the lens based on a control signal from the CPU 85.

The memory 90 is, for example, a semiconductor memory that can be attached to and detached from a slot connected to the R / W 84.

The operation in the image pickup apparatus 100 will be described below.

In the standby state for shooting, under the control of the CPU 85, the shot image signal is output to the display unit 83 via the camera signal processing unit 81 and displayed as a camera-through image. When the instruction input signal from the operation unit 202 is input, the CPU 85 outputs a control signal to the lens drive control unit 86, and the lens is moved based on the control of the lens drive control unit 86.

When the shooting operation is performed by the instruction input signal from the operation unit 202, the shot image signal is output from the camera signal processing unit 81 to the image processing unit 82, compressed and encoded, and converted into digital data in a predetermined data format. Will be converted. The converted data is output to the R / W 84 and written to the memory 90.

When reproducing the image data recorded in the memory 90, the R / W 84 reads out the predetermined image data from the memory 90 in response to the operation on the operation unit 202, and the image processing unit 82 performs the decompression / decoding process. After that, the reproduced image signal is output to the display unit 83 and the reproduced image is displayed.

<Application example>
The technology according to the present disclosure can be applied to various products. For example, the techniques according to the present disclosure may be applied to an endoscopic surgery system.

FIG. 11 is a diagram showing an example of a schematic configuration of an endoscopic surgery system 5000 to which the technique according to the present disclosure can be applied. FIG. 11 shows a surgeon (doctor) 5067 performing surgery on patient 5071 on patient bed 5069 using the endoscopic surgery system 5000. As shown in the figure, the endoscopic surgery system 5000 includes an endoscope 5001, other surgical tools 5017, a support arm device 5027 for supporting the endoscope 5001, and various devices for endoscopic surgery. It is composed of a cart 5037 and a cart 5037.

In endoscopic surgery, instead of cutting and opening the abdominal wall, a plurality of tubular opening devices called trocca 5025a to 5025d are punctured into the abdominal wall. Then, from the trocca 5025a to 5025d, the lens barrel 5003 of the endoscope 5001 and other surgical tools 5017 are inserted into the body cavity of the patient 5071. In the illustrated example, as other surgical tools 5017, a pneumoperitoneum tube 5019, an energy treatment tool 5021 and forceps 5023 are inserted into the body cavity of patient 5071. Further, the energy treatment tool 5021 is a treatment tool for incising and peeling a tissue, sealing a blood vessel, or the like by using a high frequency current or ultrasonic vibration. However, the surgical tool 5017 shown in the illustration is merely an example, and as the surgical tool 5017, various surgical tools generally used in endoscopic surgery such as a sword and a retractor may be used.

An image of the surgical site in the body cavity of the patient 5071 taken by the endoscope 5001 is displayed on the display device 5041. The surgeon 5067 performs a procedure such as excising the affected area by using the energy treatment tool 5021 or the forceps 5023 while viewing the image of the surgical site displayed on the display device 5041 in real time. Although not shown, the pneumoperitoneum tube 5019, the energy treatment tool 5021, and the forceps 5023 are supported by the operator 5067, an assistant, or the like during the operation.

(Support arm device)
The support arm device 5027 includes an arm portion 5031 extending from the base portion 5029. In the illustrated example, the arm portion 5031 is composed of joint portions 5033a, 5033b, 5033c, and links 5035a, 5035b, and is driven by control from the arm control device 5045. The endoscope 5001 is supported by the arm portion 5031, and its position and posture are controlled. Thereby, the stable position fixing of the endoscope 5001 can be realized.

(Endoscope)
The endoscope 5001 is composed of a lens barrel 5003 in which a region having a predetermined length from the tip is inserted into the body cavity of the patient 5071, and a camera head 5005 connected to the base end of the lens barrel 5003. In the illustrated example, the endoscope 5001 configured as a so-called rigid mirror having a rigid barrel 5003 is illustrated, but the endoscope 5001 is configured as a so-called flexible mirror having a flexible barrel 5003. May be good.

An opening in which an objective lens is fitted is provided at the tip of the lens barrel 5003. A light source device 5043 is connected to the endoscope 5001, and the light generated by the light source device 5043 is guided to the tip of the lens barrel by a light guide extending inside the lens barrel 5003, and is an objective. It is irradiated toward the observation target in the body cavity of the patient 5071 through the lens. The endoscope 5001 may be a direct endoscope, a perspective mirror, or a side endoscope.

An optical system and an image pickup element are provided inside the camera head 5005, and the reflected light (observation light) from the observation target is focused on the image pickup element by the optical system. The observation light is photoelectrically converted by the image pickup device, and an electric signal corresponding to the observation light, that is, an image signal corresponding to the observation image is generated. The image signal is transmitted to the camera control unit (CCU: Camera Control Unit) 5039 as RAW data. The camera head 5005 is equipped with a function of adjusting the magnification and the focal length by appropriately driving the optical system thereof.

The camera head 5005 may be provided with a plurality of image pickup elements in order to support stereoscopic viewing (3D display) or the like. In this case, a plurality of relay optical systems are provided inside the lens barrel 5003 in order to guide the observation light to each of the plurality of image pickup elements.

(Various devices mounted on the cart)
The CCU 5039 is composed of a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), and the like, and comprehensively controls the operations of the endoscope 5001 and the display device 5041. Specifically, the CCU 5039 performs various image processing for displaying an image based on the image signal, such as a development process (demosaic process), on the image signal received from the camera head 5005. The CCU 5039 provides the image signal subjected to the image processing to the display device 5041. Further, the CCU 5039 transmits a control signal to the camera head 5005 and controls the driving thereof. The control signal may include information about imaging conditions such as magnification and focal length.

The display device 5041 displays an image based on the image signal processed by the CCU 5039 under the control of the CCU 5039. When the endoscope 5001 is compatible with high-resolution shooting such as 4K (horizontal pixel number 3840 x vertical pixel number 2160) or 8K (horizontal pixel number 7680 x vertical pixel number 4320), and / or 3D display. As the display device 5041, a display device capable of displaying a high resolution and / or a device capable of displaying in 3D can be used. When a display device 5041 having a size of 55 inches or more is used for high-resolution shooting such as 4K or 8K, a further immersive feeling can be obtained. Further, a plurality of display devices 5041 having different resolutions and sizes may be provided depending on the application.

The light source device 5043 is composed of, for example, a light source such as an LED (light emitting diode), and supplies irradiation light for photographing the surgical site to the endoscope 5001.

The arm control device 5045 is configured by a processor such as a CPU, and operates according to a predetermined program to control the drive of the arm portion 5031 of the support arm device 5027 according to a predetermined control method.

The input device 5047 is an input interface for the endoscopic surgery system 5000. The user can input various information and input instructions to the endoscopic surgery system 5000 via the input device 5047. For example, the user inputs various information related to the surgery, such as physical information of the patient and information about the surgical procedure, via the input device 5047. Further, for example, the user is instructed to drive the arm portion 5031 via the input device 5047, or is instructed to change the imaging conditions (type of irradiation light, magnification, focal length, etc.) by the endoscope 5001. , Instructions to drive the energy treatment tool 5021, etc. are input.

The type of the input device 5047 is not limited, and the input device 5047 may be various known input devices. As the input device 5047, for example, a mouse, a keyboard, a touch panel, a switch, a foot switch 5057 and / or a lever and the like can be applied. When a touch panel is used as the input device 5047, the touch panel may be provided on the display surface of the display device 5041.

Alternatively, the input device 5047 is a device worn by the user, such as a glasses-type wearable device or an HMD (Head Mounted Display), and various inputs are made according to the user's gesture and line of sight detected by these devices. Is done. Further, the input device 5047 includes a camera capable of detecting the movement of the user, and various inputs are performed according to the gesture and the line of sight of the user detected from the image captured by the camera. Further, the input device 5047 includes a microphone capable of picking up the voice of the user, and various inputs are performed by voice via the microphone. In this way, the input device 5047 is configured to be able to input various information in a non-contact manner, so that a user who belongs to a clean area (for example, an operator 5067) can operate a device belonging to the unclean area in a non-contact manner. Is possible. In addition, the user can operate the device without taking his / her hand off the surgical tool that he / she has, which improves the convenience of the user.

The treatment tool control device 5049 controls the drive of the energy treatment tool 5021 for tissue cauterization, incision, blood vessel encapsulation, and the like. The pneumoperitoneum device 5051 gas in the body cavity through the pneumoperitoneum tube 5019 in order to inflate the body cavity of the patient 5071 for the purpose of securing the field of view by the endoscope 5001 and securing the work space of the operator. Is sent. The recorder 5053 is a device capable of recording various information related to surgery. The printer 5055 is a device capable of printing various information related to surgery in various formats such as text, images, and graphs.

Hereinafter, a particularly characteristic configuration of the endoscopic surgery system 5000 will be described in more detail.

(Support arm device)
The support arm device 5027 includes a base portion 5029 which is a base, and an arm portion 5031 extending from the base portion 5029. In the illustrated example, the arm portion 5031 is composed of a plurality of joint portions 5033a, 5033b, 5033c and a plurality of links 5035a, 5035b connected by the joint portions 5033b, but in FIG. 11, for the sake of simplicity. , The configuration of the arm portion 5031 is simplified and illustrated. Actually, the shapes, numbers and arrangements of the joint portions 5033a to 5033c and the links 5035a and 5035b, the direction of the rotation axis of the joint portions 5033a to 5033c, and the like are appropriately set so that the arm portion 5031 has a desired degree of freedom. obtain. For example, the arm portion 5031 may be preferably configured to have more than 6 degrees of freedom. As a result, the endoscope 5001 can be freely moved within the movable range of the arm portion 5031, so that the lens barrel 5003 of the endoscope 5001 can be inserted into the body cavity of the patient 5071 from a desired direction. It will be possible.

An actuator is provided in the joint portions 5033a to 5033c, and the joint portions 5033a to 5033c are configured to be rotatable around a predetermined rotation axis by driving the actuator. By controlling the drive of the actuator by the arm control device 5045, the rotation angles of the joint portions 5033a to 5033c are controlled, and the drive of the arm portion 5031 is controlled. Thereby, control of the position and posture of the endoscope 5001 can be realized. At this time, the arm control device 5045 can control the drive of the arm unit 5031 by various known control methods such as force control or position control.

For example, when the operator 5067 appropriately inputs an operation via the input device 5047 (including the foot switch 5057), the drive of the arm unit 5031 is appropriately controlled by the arm control device 5045 according to the operation input. The position and orientation of the endoscope 5001 may be controlled. By this control, the endoscope 5001 at the tip of the arm portion 5031 can be moved from an arbitrary position to an arbitrary position, and then fixedly supported at the moved position. The arm portion 5031 may be operated by a so-called master slave method. In this case, the arm portion 5031 can be remotely controlled by the user via an input device 5047 installed at a location away from the operating room.

When force control is applied, the arm control device 5045 receives an external force from the user, and the actuators of the joint portions 5033a to 5033c are arranged so that the arm portion 5031 moves smoothly according to the external force. So-called power assist control for driving may be performed. As a result, when the user moves the arm portion 5031 while directly touching the arm portion 5031, the arm portion 5031 can be moved with a relatively light force. Therefore, the endoscope 5001 can be moved more intuitively and with a simpler operation, and the convenience of the user can be improved.

Here, in general, in endoscopic surgery, the endoscope 5001 was supported by a doctor called a scopist. On the other hand, by using the support arm device 5027, the position of the endoscope 5001 can be more reliably fixed without human intervention, so that an image of the surgical site can be stably obtained. , It becomes possible to perform surgery smoothly.

The arm control device 5045 does not necessarily have to be provided on the cart 5037. Further, the arm control device 5045 does not necessarily have to be one device. For example, the arm control device 5045 may be provided at each joint portion 5033a to 5033c of the arm portion 5031 of the support arm device 5027, and the arm portion 5031 is driven by the plurality of arm control devices 5045 cooperating with each other. Control may be realized.

(Light source device)
The light source device 5043 supplies the endoscope 5001 with irradiation light for photographing the surgical site. The light source device 5043 is composed of, for example, an LED, a laser light source, or a white light source composed of a combination thereof. At this time, when the white light source is configured by the combination of the RGB laser light sources, the output intensity and the output timing of each color (each wavelength) can be controlled with high accuracy, so that the white balance of the captured image in the light source device 5043 can be controlled. Can be adjusted. Further, in this case, the laser light from each of the RGB laser light sources is irradiated to the observation target in a time-division manner, and the drive of the image sensor of the camera head 5005 is controlled in synchronization with the irradiation timing to correspond to each of RGB. It is also possible to capture the image in a time-division manner. According to this method, a color image can be obtained without providing a color filter in the image pickup device.

Further, the drive of the light source device 5043 may be controlled so as to change the intensity of the output light at predetermined time intervals. By controlling the drive of the image sensor of the camera head 5005 in synchronization with the timing of the change of the light intensity to acquire an image in time division and synthesizing the image, so-called high dynamic without blackout and overexposure. Range images can be generated.

Further, the light source device 5043 may be configured to be able to supply light in a predetermined wavelength band corresponding to special light observation. In special light observation, for example, by utilizing the wavelength dependence of light absorption in body tissue, the surface layer of the mucous membrane is irradiated with light in a narrower band than the irradiation light (that is, white light) during normal observation. So-called narrow band imaging, in which a predetermined tissue such as a blood vessel is photographed with high contrast, is performed. Alternatively, in special light observation, fluorescence observation may be performed in which an image is obtained by fluorescence generated by irradiating with excitation light. In fluorescence observation, the body tissue is irradiated with excitation light to observe the fluorescence from the body tissue (autofluorescence observation), or a reagent such as indocyanine green (ICG) is locally injected into the body tissue and the body tissue is injected. An excitation light corresponding to the fluorescence wavelength of the reagent may be irradiated to obtain a fluorescence image. The light source device 5043 may be configured to be capable of supplying narrowband light and / or excitation light corresponding to such special light observation.

(Camera head and CCU)
The functions of the camera head 5005 and the CCU 5039 of the endoscope 5001 will be described in more detail with reference to FIG. FIG. 12 is a block diagram showing an example of the functional configuration of the camera head 5005 and CCU5039 shown in FIG.

Referring to FIG. 12, the camera head 5005 has a lens unit 5007, an image pickup unit 5009, a drive unit 5011, a communication unit 5013, and a camera head control unit 5015 as its functions. Further, the CCU 5039 has a communication unit 5059, an image processing unit 5061, and a control unit 5063 as its functions. The camera head 5005 and the CCU 5039 are bidirectionally connected by a transmission cable 5065 so as to be communicable.

First, the functional configuration of the camera head 5005 will be described. The lens unit 5007 is an optical system provided at a connection portion with the lens barrel 5003. The observation light taken in from the tip of the lens barrel 5003 is guided to the camera head 5005 and incident on the lens unit 5007. The lens unit 5007 is configured by combining a plurality of lenses including a zoom lens and a focus lens. The optical characteristics of the lens unit 5007 are adjusted so as to collect the observation light on the light receiving surface of the image pickup element of the image pickup unit 5009. Further, the zoom lens and the focus lens are configured so that their positions on the optical axis can be moved in order to adjust the magnification and the focus of the captured image.

The image pickup unit 5009 is composed of an image pickup element and is arranged after the lens unit 5007. The observation light that has passed through the lens unit 5007 is focused on the light receiving surface of the image pickup device, and an image signal corresponding to the observation image is generated by photoelectric conversion. The image signal generated by the image pickup unit 5009 is provided to the communication unit 5013.

As the image pickup element constituting the image pickup unit 5009, for example, a CMOS (Complementary Metal Oxide Semiconductor) type image sensor having a Bayer array and capable of color photographing is used. As the image pickup device, for example, an image pickup device capable of capturing a high-resolution image of 4K or higher may be used. By obtaining the image of the surgical site with high resolution, the surgeon 5067 can grasp the state of the surgical site in more detail, and the operation can proceed more smoothly.

Further, the image pickup element constituting the image pickup unit 5009 is configured to have a pair of image pickup elements for acquiring image signals for the right eye and the left eye corresponding to 3D display, respectively. The 3D display enables the surgeon 5067 to more accurately grasp the depth of the living tissue in the surgical site. When the image pickup unit 5009 is composed of a multi-plate type, a plurality of lens units 5007 are also provided corresponding to each image pickup element.

Further, the image pickup unit 5009 does not necessarily have to be provided on the camera head 5005. For example, the image pickup unit 5009 may be provided inside the lens barrel 5003 immediately after the objective lens.

The drive unit 5011 is composed of an actuator, and is controlled by the camera head control unit 5015 to move the zoom lens and the focus lens of the lens unit 5007 by a predetermined distance along the optical axis. As a result, the magnification and focus of the image captured by the image pickup unit 5009 can be adjusted as appropriate.

The communication unit 5013 is configured by a communication device for transmitting and receiving various information to and from the CCU 5039. The communication unit 5013 transmits the image signal obtained from the image pickup unit 5009 as RAW data to the CCU 5039 via the transmission cable 5065. At this time, in order to display the captured image of the surgical site with low latency, it is preferable that the image signal is transmitted by optical communication. At the time of surgery, the surgeon 5067 performs the surgery while observing the condition of the affected area with the captured image, so for safer and more reliable surgery, the moving image of the surgical site is displayed in real time as much as possible. This is because it is required. When optical communication is performed, the communication unit 5013 is provided with a photoelectric conversion module that converts an electric signal into an optical signal. The image signal is converted into an optical signal by the photoelectric conversion module, and then transmitted to the CCU 5039 via the transmission cable 5065.

Further, the communication unit 5013 receives a control signal for controlling the drive of the camera head 5005 from the CCU 5039. The control signal includes, for example, information to specify the frame rate of the captured image, information to specify the exposure value at the time of imaging, and / or information to specify the magnification and focus of the captured image. Contains information about the condition. The communication unit 5013 provides the received control signal to the camera head control unit 5015. The control signal from the CCU 5039 may also be transmitted by optical communication. In this case, the communication unit 5013 is provided with a photoelectric conversion module that converts an optical signal into an electric signal, and the control signal is converted into an electric signal by the photoelectric conversion module and then provided to the camera head control unit 5015.

The image pickup conditions such as the frame rate, the exposure value, the magnification, and the focal point are automatically set by the control unit 5063 of the CCU 5039 based on the acquired image signal. That is, the so-called AE (Auto Exposure) function, AF (Auto Focus) function, and AWB (Auto White Balance) function are mounted on the endoscope 5001.

The camera head control unit 5015 controls the drive of the camera head 5005 based on the control signal from the CCU 5039 received via the communication unit 5013. For example, the camera head control unit 5015 controls the drive of the image pickup element of the image pickup unit 5009 based on the information to specify the frame rate of the image pickup image and / or the information to specify the exposure at the time of image pickup. Further, for example, the camera head control unit 5015 appropriately moves the zoom lens and the focus lens of the lens unit 5007 via the drive unit 5011 based on the information that the magnification and the focus of the captured image are specified. The camera head control unit 5015 may further have a function of storing information for identifying the lens barrel 5003 and the camera head 5005.

By arranging the configuration of the lens unit 5007, the image pickup unit 5009, and the like in a sealed structure having high airtightness and waterproofness, the camera head 5005 can be made resistant to the autoclave sterilization process.

Next, the functional configuration of the CCU 5039 will be described. The communication unit 5059 is configured by a communication device for transmitting and receiving various information to and from the camera head 5005. The communication unit 5059 receives an image signal transmitted from the camera head 5005 via the transmission cable 5065. At this time, as described above, the image signal can be suitably transmitted by optical communication. In this case, corresponding to optical communication, the communication unit 5059 is provided with a photoelectric conversion module that converts an optical signal into an electric signal. The communication unit 5059 provides the image processing unit 5061 with an image signal converted into an electric signal.

Further, the communication unit 5059 transmits a control signal for controlling the drive of the camera head 5005 to the camera head 5005. The control signal may also be transmitted by optical communication.

The image processing unit 5061 performs various image processing on the image signal which is the RAW data transmitted from the camera head 5005. The image processing includes, for example, development processing, high image quality processing (band enhancement processing, super-resolution processing, NR (Noise reduction) processing and / or camera shake correction processing, etc.), and / or enlargement processing (electronic zoom processing). Etc., various known signal processing is included. Further, the image processing unit 5061 performs detection processing on the image signal for performing AE, AF and AWB.

The image processing unit 5061 is composed of a processor such as a CPU or GPU, and the processor operates according to a predetermined program to perform the above-mentioned image processing and detection processing. When the image processing unit 5061 is composed of a plurality of GPUs, the image processing unit 5061 appropriately divides the information related to the image signal and performs image processing in parallel by the plurality of GPUs.

The control unit 5063 performs various controls regarding imaging of the surgical site by the endoscope 5001 and display of the captured image. For example, the control unit 5063 generates a control signal for controlling the drive of the camera head 5005. At this time, when the imaging condition is input by the user, the control unit 5063 generates a control signal based on the input by the user. Alternatively, when the endoscope 5001 is equipped with an AE function, an AF function, and an AWB function, the control unit 5063 has an optimum exposure value, a focal length, and an optimum exposure value according to the result of detection processing by the image processing unit 5061. The white balance is calculated appropriately and a control signal is generated.

Further, the control unit 5063 causes the display device 5041 to display the image of the surgical unit based on the image signal processed by the image processing unit 5061. At this time, the control unit 5063 recognizes various objects in the surgical unit image by using various image recognition techniques. For example, the control unit 5063 detects a surgical tool such as forceps, a specific biological part, bleeding, a mist when using the energy treatment tool 5021, etc. by detecting the shape, color, etc. of the edge of the object included in the surgical site image. Can be recognized. When displaying the image of the surgical site on the display device 5041, the control unit 5063 uses the recognition result to superimpose and display various surgical support information on the image of the surgical site. By superimposing the surgical support information and presenting it to the surgeon 5067, it becomes possible to proceed with the surgery more safely and surely.

The transmission cable 5065 connecting the camera head 5005 and the CCU 5039 is an electric signal cable corresponding to electric signal communication, an optical fiber corresponding to optical communication, or a composite cable thereof.

Here, in the illustrated example, the communication is performed by wire using the transmission cable 5065, but the communication between the camera head 5005 and the CCU 5039 may be performed wirelessly. When the communication between the two is performed wirelessly, it is not necessary to lay the transmission cable 5065 in the operating room, so that the situation where the movement of the medical staff in the operating room is hindered by the transmission cable 5065 can be solved.

The example of the endoscopic surgery system 5000 to which the technique according to the present disclosure can be applied has been described above. Although the endoscopic surgery system 5000 has been described here as an example, the system to which the technique according to the present disclosure can be applied is not limited to such an example. For example, the technique according to the present disclosure may be applied to a flexible endoscopic system for examination or a microsurgery system.

The technique according to the present disclosure can be suitably applied to a lens barrel such as a lens barrel and an image pickup apparatus among the configurations described above. Specifically, since a clearer image of the surgical site can be obtained, it becomes possible to perform the operation more safely and reliably.

The technology according to the present disclosure can be applied to various products. For example, the technology according to the present disclosure refers to any type of movement such as automobiles, electric vehicles, hybrid electric vehicles, motorcycles, bicycles, personal mobility, airplanes, drones, ships, robots, construction machinery, agricultural machinery (tractors), and the like. It may be realized as a device mounted on the body.

FIG. 13 is a block diagram showing a schematic configuration example of a vehicle control system 7000, which is an example of a mobile control system to which the technique according to the present disclosure can be applied. The vehicle control system 7000 includes a plurality of electronic control units connected via a communication network 7010. In the example shown in FIG. 13, the vehicle control system 7000 includes a drive system control unit 7100, a body system control unit 7200, a battery control unit 7300, an outside information detection unit 7400, an in-vehicle information detection unit 7500, and an integrated control unit 7600. .. The communication network 7010 connecting these plurality of control units conforms to any standard such as CAN (Controller Area Network), LIN (Local Interconnect Network), LAN (Local Area Network) or FlexRay (registered trademark). It may be an in-vehicle communication network.

Each control unit includes a microcomputer that performs arithmetic processing according to various programs, a storage unit that stores programs executed by the microcomputer or parameters used for various arithmetic, and a drive circuit that drives various controlled devices. To prepare for. Each control unit is provided with a network I / F for communicating with other control units via the communication network 7010, and is connected to devices or sensors inside and outside the vehicle by wired communication or wireless communication. A communication I / F for performing communication is provided. In FIG. 13, the functional configuration of the integrated control unit 7600 includes a microcomputer 7610, a general-purpose communication I / F7620, a dedicated communication I / F7630, a positioning unit 7640, a beacon receiving unit 7650, an in-vehicle device I / F7660, and an audio image output unit 7670. The vehicle-mounted network I / F 7680 and the storage unit 7690 are illustrated. Other control units also include a microcomputer, a communication I / F, a storage unit, and the like.

The drive system control unit 7100 controls the operation of the device related to the drive system of the vehicle according to various programs. For example, the drive system control unit 7100 has a driving force generator for generating the driving force of the vehicle such as an internal combustion engine or a driving motor, a driving force transmission mechanism for transmitting the driving force to the wheels, and a steering angle of the vehicle. It functions as a control device such as a steering mechanism for adjusting and a braking device for generating braking force of the vehicle. The drive system control unit 7100 may have a function as a control device such as ABS (Antilock Brake System) or ESC (Electronic Stability Control).

A vehicle state detection unit 7110 is connected to the drive system control unit 7100. The vehicle state detection unit 7110 may include, for example, a gyro sensor that detects the angular velocity of the axial rotation motion of the vehicle body, an acceleration sensor that detects the acceleration of the vehicle, an accelerator pedal operation amount, a brake pedal operation amount, or steering wheel steering. It includes at least one of sensors for detecting an angle, engine speed, wheel speed, and the like. The drive system control unit 7100 performs arithmetic processing using a signal input from the vehicle state detection unit 7110, and controls an internal combustion engine, a drive motor, an electric power steering device, a brake device, and the like.

The body system control unit 7200 controls the operation of various devices mounted on the vehicle body according to various programs. For example, the body system control unit 7200 functions as a keyless entry system, a smart key system, a power window device, or a control device for various lamps such as headlamps, back lamps, brake lamps, turn signals or fog lamps. In this case, a radio wave transmitted from a portable device that substitutes for a key or signals of various switches may be input to the body system control unit 7200. The body system control unit 7200 receives inputs of these radio waves or signals and controls a vehicle door lock device, a power window device, a lamp, and the like.

The battery control unit 7300 controls the secondary battery 7310, which is the power supply source of the drive motor, according to various programs. For example, information such as the battery temperature, the battery output voltage, or the remaining capacity of the battery is input to the battery control unit 7300 from the battery device including the secondary battery 7310. The battery control unit 7300 performs arithmetic processing using these signals, and controls the temperature control of the secondary battery 7310 or the cooling device provided in the battery device.

The vehicle outside information detection unit 7400 detects information outside the vehicle equipped with the vehicle control system 7000. For example, at least one of the image pickup unit 7410 and the vehicle exterior information detection unit 7420 is connected to the vehicle exterior information detection unit 7400. The image pickup unit 7410 includes at least one of a ToF (Time Of Flight) camera, a stereo camera, a monocular camera, an infrared camera, and other cameras. The vehicle outside information detection unit 7420 is used, for example, to detect the current weather or an environment sensor for detecting the weather, or other vehicles, obstacles, pedestrians, etc. around the vehicle equipped with the vehicle control system 7000. At least one of the surrounding information detection sensors is included.

The environment sensor may be, for example, at least one of a raindrop sensor that detects rainy weather, a fog sensor that detects fog, a sunshine sensor that detects the degree of sunshine, and a snow sensor that detects snowfall. The ambient information detection sensor may be at least one of an ultrasonic sensor, a radar device, and a LIDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) device. The image pickup unit 7410 and the vehicle exterior information detection unit 7420 may be provided as independent sensors or devices, or may be provided as a device in which a plurality of sensors or devices are integrated.

Here, FIG. 14 shows an example of the installation position of the image pickup unit 7410 and the vehicle outside information detection unit 7420. The image pickup unit 7910, 7912, 7914, 7916, 7918 are provided, for example, at at least one of the front nose, side mirror, rear bumper, back door, and upper part of the windshield of the vehicle interior of the vehicle 7900. The image pickup unit 7910 provided in the front nose and the image pickup section 7918 provided in the upper part of the windshield in the vehicle interior mainly acquire an image in front of the vehicle 7900. The image pickup units 7912 and 7914 provided in the side mirrors mainly acquire images of the side of the vehicle 7900. The image pickup unit 7916 provided in the rear bumper or the back door mainly acquires an image of the rear of the vehicle 7900. The image pickup unit 7918 provided on the upper part of the windshield in the vehicle interior is mainly used for detecting a preceding vehicle, a pedestrian, an obstacle, a traffic light, a traffic sign, a lane, or the like.

Note that FIG. 14 shows an example of the photographing range of each of the imaging units 7910, 7912, 7914, 7916. The imaging range a indicates the imaging range of the imaging unit 7910 provided on the front nose, the imaging ranges b and c indicate the imaging range of the imaging units 7912 and 7914 provided on the side mirrors, respectively, and the imaging range d indicates the imaging range d. The imaging range of the imaging unit 7916 provided on the rear bumper or the back door is shown. For example, by superimposing the image data captured by the image pickup units 7910, 7912, 7914, 7916, a bird's-eye view image of the vehicle 7900 can be obtained.

The vehicle exterior information detection unit 7920, 7922, 7924, 7926, 7928, 7930 provided on the front, rear, side, corner and the upper part of the windshield in the vehicle interior of the vehicle 7900 may be, for example, an ultrasonic sensor or a radar device. The vehicle exterior information detection units 7920, 7926, 7930 provided on the front nose, rear bumper, back door, and upper part of the windshield in the vehicle interior of the vehicle 7900 may be, for example, a lidar device. These out-of-vehicle information detection units 7920 to 7930 are mainly used for detecting a preceding vehicle, a pedestrian, an obstacle, or the like.

The explanation will be continued by returning to FIG. The vehicle outside information detection unit 7400 causes the image pickup unit 7410 to capture an image of the outside of the vehicle and receives the captured image data. Further, the vehicle outside information detection unit 7400 receives detection information from the connected vehicle outside information detection unit 7420. When the vehicle exterior information detection unit 7420 is an ultrasonic sensor, a radar device, or a lidar device, the vehicle exterior information detection unit 7400 transmits ultrasonic waves, electromagnetic waves, or the like, and receives received reflected wave information. The out-of-vehicle information detection unit 7400 may perform object detection processing or distance detection processing such as a person, a vehicle, an obstacle, a sign, or a character on a road surface based on the received information. The out-of-vehicle information detection unit 7400 may perform an environment recognition process for recognizing rainfall, fog, road surface conditions, etc. based on the received information. The out-of-vehicle information detection unit 7400 may calculate the distance to an object outside the vehicle based on the received information.

Further, the vehicle outside information detection unit 7400 may perform image recognition processing or distance detection processing for recognizing a person, a vehicle, an obstacle, a sign, a character on a road surface, or the like based on the received image data. The vehicle outside information detection unit 7400 performs processing such as distortion correction or alignment on the received image data, and synthesizes image data captured by different image pickup units 7410 to generate a bird's-eye view image or a panoramic image. May be good. The vehicle exterior information detection unit 7400 may perform the viewpoint conversion process using the image data captured by different image pickup units 7410.

The in-vehicle information detection unit 7500 detects information in the vehicle. For example, a driver state detection unit 7510 that detects the state of the driver is connected to the in-vehicle information detection unit 7500. The driver state detection unit 7510 may include a camera that captures the driver, a biosensor that detects the driver's biological information, a microphone that collects sound in the vehicle interior, and the like. The biosensor is provided on, for example, a seat surface or a steering wheel, and detects biometric information of a passenger sitting on the seat or a driver holding the steering wheel. The in-vehicle information detection unit 7500 may calculate the degree of fatigue or concentration of the driver based on the detection information input from the driver state detection unit 7510, and may determine whether the driver is asleep. You may. The in-vehicle information detection unit 7500 may perform processing such as noise canceling processing on the collected audio signal.

The integrated control unit 7600 controls the overall operation in the vehicle control system 7000 according to various programs. An input unit 7800 is connected to the integrated control unit 7600. The input unit 7800 is realized by a device that can be input-operated by the passenger, such as a touch panel, a button, a microphone, a switch, or a lever. Data obtained by recognizing the voice input by the microphone may be input to the integrated control unit 7600. The input unit 7800 may be, for example, a remote control device using infrared rays or other radio waves, or an external connection device such as a mobile phone or a PDA (Personal Digital Assistant) corresponding to the operation of the vehicle control system 7000. You may. The input unit 7800 may be, for example, a camera, in which case the passenger can input information by gesture. Alternatively, data obtained by detecting the movement of the wearable device worn by the passenger may be input. Further, the input unit 7800 may include, for example, an input control circuit that generates an input signal based on the information input by the passenger or the like using the input unit 7800 and outputs the input signal to the integrated control unit 7600. By operating the input unit 7800, the passenger or the like inputs various data to the vehicle control system 7000 and instructs the processing operation.

The storage unit 7690 may include a ROM (Read Only Memory) for storing various programs executed by the microcomputer, and a RAM (Random Access Memory) for storing various parameters, calculation results, sensor values, and the like. Further, the storage unit 7690 may be realized by a magnetic storage device such as an HDD (Hard Disc Drive), a semiconductor storage device, an optical storage device, an optical magnetic storage device, or the like.

The general-purpose communication I / F 7620 is a general-purpose communication I / F that mediates communication with various devices existing in the external environment 7750. General-purpose communication I / F7620 is a cellular communication protocol such as GSM (Registered Trademark) (Global System of Mobile communications), WiMAX (Registered Trademark), LTE (Registered Trademark) (Long Term Evolution) or LTE-A (LTE-Advanced). , Or other wireless communication protocols such as wireless LAN (also referred to as Wi-Fi®), Bluetooth® may be implemented. The general-purpose communication I / F7620 connects to a device (for example, an application server or a control server) existing on an external network (for example, the Internet, a cloud network, or a business-specific network) via a base station or an access point, for example. You may. Further, the general-purpose communication I / F7620 uses, for example, P2P (Peer To Peer) technology, and is a terminal existing in the vicinity of the vehicle (for example, a terminal of a driver, a pedestrian, or a store, or an MTC (Machine Type Communication) terminal). May be connected with.

The dedicated communication I / F 7630 is a communication I / F that supports a communication protocol designed for use in a vehicle. The dedicated communication I / F7630 uses a standard protocol such as WAVE (Wireless Access in Vehicle Environment), DSRC (Dedicated Short Range Communications), which is a combination of the lower layer IEEE802.11p and the upper layer IEEE1609, or a cellular communication protocol. May be implemented. Dedicated communications I / F 7630 typically include Vehicle to Vehicle communications, Vehicle to Infrastructure communications, Vehicle to Home communications, and Vehicle to Pedestrian. ) Carry out V2X communication, a concept that includes one or more of the communications.

The positioning unit 7640 receives, for example, a GNSS signal from a GNSS (Global Navigation Satellite System) satellite (for example, a GPS signal from a GPS (Global Positioning System) satellite) and executes positioning, and performs positioning, and the latitude, longitude, and altitude of the vehicle. Generate location information including. The positioning unit 7640 may specify the current position by exchanging signals with the wireless access point, or may acquire position information from a terminal such as a mobile phone, PHS, or smartphone having a positioning function.

The beacon receiving unit 7650 receives, for example, a radio wave or an electromagnetic wave transmitted from a radio station or the like installed on a road, and acquires information such as a current position, a traffic jam, a road closure, or a required time. The function of the beacon receiving unit 7650 may be included in the above-mentioned dedicated communication I / F 7630.

The in-vehicle device I / F 7660 is a communication interface that mediates the connection between the microcomputer 7610 and various in-vehicle devices 7760 existing in the vehicle. The in-vehicle device I / F7660 may establish a wireless connection using a wireless communication protocol such as wireless LAN, Bluetooth®, NFC (Near Field Communication) or WUSB (Wireless USB). In addition, the in-vehicle device I / F7660 is via a connection terminal (and a cable if necessary) (not shown), USB (Universal Serial Bus), HDMI (registered trademark) (High-Definition Multimedia Interface, or MHL (Mobile High)). -Definition Link) and other wired connections may be established. The in-vehicle device 7760 includes, for example, at least one of a passenger's mobile device or wearable device, or an information device carried in or attached to the vehicle. Further, the in-vehicle device 7760 may include a navigation device for searching a route to an arbitrary destination. The in-vehicle device I / F 7660 may be a control signal to and from these in-vehicle devices 7760. Or exchange the data signal.

The vehicle-mounted network I / F 7680 is an interface that mediates communication between the microcomputer 7610 and the communication network 7010. The vehicle-mounted network I / F7680 transmits / receives signals and the like according to a predetermined protocol supported by the communication network 7010.

The microcomputer 7610 of the integrated control unit 7600 is via at least one of general-purpose communication I / F7620, dedicated communication I / F7630, positioning unit 7640, beacon receiving unit 7650, in-vehicle device I / F7660, and in-vehicle network I / F7680. The vehicle control system 7000 is controlled according to various programs based on the information acquired. For example, the microcomputer 7610 calculates the control target value of the driving force generator, the steering mechanism, or the braking device based on the acquired information inside and outside the vehicle, and outputs a control command to the drive system control unit 7100. May be good. For example, the microcomputer 7610 realizes ADAS (Advanced Driver Assistance System) functions including vehicle collision avoidance or impact mitigation, follow-up driving based on inter-vehicle distance, vehicle speed maintenance driving, vehicle collision warning, vehicle lane deviation warning, and the like. Cooperative control may be performed for the purpose of. In addition, the microcomputer 7610 automatically travels autonomously without relying on the driver's operation by controlling the driving force generator, steering mechanism, braking device, etc. based on the acquired information on the surroundings of the vehicle. Coordinated control may be performed for the purpose of driving or the like.

The microcomputer 7610 has information acquired via at least one of a general-purpose communication I / F7620, a dedicated communication I / F7630, a positioning unit 7640, a beacon receiving unit 7650, an in-vehicle device I / F7660, and an in-vehicle network I / F7680. Based on the above, three-dimensional distance information between the vehicle and an object such as a surrounding structure or a person may be generated, and local map information including the peripheral information of the current position of the vehicle may be created. Further, the microcomputer 7610 may predict the danger of a vehicle collision, a pedestrian or the like approaching or entering a closed road, and generate a warning signal based on the acquired information. The warning signal may be, for example, a signal for generating a warning sound or lighting a warning lamp.

The audio-image output unit 7670 transmits an output signal of at least one of audio and an image to an output device capable of visually or audibly notifying information to the passenger or the outside of the vehicle. In the example of FIG. 13, an audio speaker 7710, a display unit 7720, and an instrument panel 7730 are exemplified as output devices. The display unit 7720 may include, for example, at least one of an onboard display and a head-up display. The display unit 7720 may have an AR (Augmented Reality) display function. The output device may be other devices such as headphones, wearable devices such as eyeglass-type displays worn by passengers, projectors or lamps other than these devices. When the output device is a display device, the display device displays the results obtained by various processes performed by the microcomputer 7610 or the information received from other control units in various formats such as texts, images, tables, and graphs. Display visually. When the output device is an audio output device, the audio output device converts an audio signal composed of reproduced audio data, acoustic data, or the like into an analog signal and outputs the audio signal audibly.

In the example shown in FIG. 13, at least two control units connected via the communication network 7010 may be integrated as one control unit. Alternatively, each control unit may be composed of a plurality of control units. Further, the vehicle control system 7000 may include another control unit (not shown). Further, in the above description, the other control unit may have a part or all of the functions carried out by any of the control units. That is, as long as information is transmitted and received via the communication network 7010, predetermined arithmetic processing may be performed by any of the control units. Similarly, a sensor or device connected to one of the control units may be connected to the other control unit, and the plurality of control units may send and receive detection information to and from each other via the communication network 7010. ..

<This technology>
The present technology can also be configured as follows.

(1)
An outer cylinder whose axial direction is oriented toward the optical axis and whose internal space is formed as an arrangement space and whose end on the subject side is provided as a fixing end.
An annular lens holding portion that is placed in the placement space and holds the lens,
A lens barrel comprising a fixed portion fixed to the fixing end portion and an elastic body formed in an annular shape having a pressing portion that is elastically deformable and pressed against the outer peripheral surface of the lens holding portion.

(2)
The lens barrel according to (1) above, wherein the fixed portion is provided with at least a first portion to be fixed to the tip end surface of the fixing end portion.

(3)
The lens barrel according to (1) above, wherein the fixed portion is provided with a first portion that covers the tip surface of the fixing end portion and a second portion that is fixed to the outer peripheral surface of the fixing end portion. ..

(4)
A portion of the elastic body between the pressing portion and the fixing portion is provided as a connecting portion located in the arrangement space.
The lens barrel according to any one of (1) to (3) above, wherein a filler is provided between the inner peripheral surface of the outer cylinder and the connecting portion.

(5)
The lens barrel according to (4), wherein the inner peripheral surface of the outer cylinder and the outer peripheral surface of the connecting portion are adhered to the filler.

(6)
A portion of the elastic body between the pressing portion and the fixing portion is provided as a connecting portion located in the arrangement space.
The lens barrel according to any one of (1) to (5) above, wherein the elastic body is provided with an annular protrusion protruding from the connecting portion to the inner peripheral side.

(7)
The pressing portion is continuous with a contact portion pressed against the outer peripheral surface of the lens holding portion and one end of the contact portion on the opposite side of the subject, and approaches the inner peripheral surface of the outer cylinder with respect to the contact portion. The lens barrel according to any one of (1) to (6) above, which is provided with a bent portion bent in the direction.

(8)
The lens holding portion has an annular lens frame and a holding ring whose end portion on the subject side is positioned on the subject side from the lens frame by pressing the lens against the lens frame.
The lens barrel according to any one of (1) to (7) above, wherein the pressing portion is pressed against the outer peripheral surface of the pressing ring.

(9)
It is equipped with a lens barrel that captures an optical image and an image sensor that converts the captured optical image into an electrical signal.
The lens barrel
An outer cylinder whose axial direction is oriented toward the optical axis and whose internal space is formed as an arrangement space and whose end on the subject side is provided as a fixing end.
An annular lens holding portion that is placed in the placement space and holds the lens,
An image pickup apparatus comprising a fixed portion fixed to the fixing end portion and an elastic body formed in an annular shape having a pressing portion that is elastically deformable and pressed against the outer peripheral surface of the lens holding portion.

100 ... image pickup device, 204 ... image sensor, 1 ... lens barrel, 2 ... outer cylinder, 7 ... fixing end, 9 ... elastic body, 10 ... fixed part, 11 ... connecting part, 12 ... pressing part, 13 ... 1st part, 14 ... 2nd part, 15 ... contact part, 16 ... bending part, 17 ... lens holding part, 18 ... lens frame, 19 ... holding ring, 22 ... lens, 30 ... filler, 40 ... Protrusion, P ... Gap

Claims (9)

An outer cylinder whose axial direction is oriented toward the optical axis and whose internal space is formed as an arrangement space and whose end on the subject side is provided as a fixing end.
An annular lens holding portion that is placed in the placement space and holds the lens,
A lens barrel comprising a fixed portion fixed to the fixing end portion and an elastic body formed in an annular shape having a pressing portion that is elastically deformable and pressed against the outer peripheral surface of the lens holding portion. The lens barrel according to claim 1, wherein the fixed portion is provided with at least a first portion to be fixed to the tip end surface of the fixing end portion. The lens barrel according to claim 1, wherein the fixed portion is provided with a first portion that covers the tip end surface of the fixing end portion and a second portion that is fixed to the outer peripheral surface of the fixing end portion. A portion of the elastic body between the pressing portion and the fixing portion is provided as a connecting portion located in the arrangement space.
The lens barrel according to claim 1, wherein a filler is provided between the inner peripheral surface of the outer cylinder and the connecting portion. The lens barrel according to claim 4, wherein the inner peripheral surface of the outer cylinder and the outer peripheral surface of the connecting portion are adhered to the filler. A portion of the elastic body between the pressing portion and the fixing portion is provided as a connecting portion located in the arrangement space.
The lens barrel according to claim 1, wherein the elastic body is provided with an annular protrusion protruding from the connecting portion to the inner peripheral side. The pressing portion is continuous with a contact portion pressed against the outer peripheral surface of the lens holding portion and one end of the contact portion on the opposite side of the subject, and approaches the inner peripheral surface of the outer cylinder with respect to the contact portion. The lens barrel according to claim 1, wherein a bent portion bent in a direction is provided. The lens holding portion has an annular lens frame and a holding ring whose end portion on the subject side is positioned on the subject side from the lens frame by pressing the lens against the lens frame.
The lens barrel according to claim 1, wherein the pressing portion is pressed against the outer peripheral surface of the pressing ring. It is equipped with a lens barrel that captures an optical image and an image sensor that converts the captured optical image into an electrical signal.
The lens barrel
An outer cylinder whose axial direction is oriented toward the optical axis and whose internal space is formed as an arrangement space and whose end on the subject side is provided as a fixing end.
An annular lens holding portion that is placed in the placement space and holds the lens,
An image pickup apparatus comprising a fixed portion fixed to the fixing end portion and an elastic body formed in an annular shape having a pressing portion that is elastically deformable and pressed against the outer peripheral surface of the lens holding portion.

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