JP7081609B2 - Lens device and image pickup device - Google Patents

Description

The present art relates to a technical field of a lens device and an image pickup device in which a lens frame is fixed to a frame holder by adhesion.

Japanese Unexamined Patent Publication No. 2007-47841

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

In such a lens device, for example, a centering operation for adjusting the optical axis of the lens in an appropriate direction is performed before the product is shipped. The alignment work is performed by adjusting the tilt of the lens frame that holds the lens so that the tilt is appropriate with respect to the frame holder, and is often performed using an eccentric pin (adjustment pin) (for example,). See Patent Document 1).

The eccentric pin has a head supported by the frame holder and a shaft portion whose axis center is eccentric with respect to the center of the head, and the head is inserted into the support hole of the frame holder and the shaft portion is a lens frame. It is used in the state of being inserted into the insertion hole of. When the eccentric pin is rotated, the inclination of the lens frame with respect to the frame holder is changed according to the rotation position.

The alignment work is completed when the optical axis of the lens held in the lens frame displaced by the rotation position of the eccentric pin is oriented to satisfy a predetermined optical performance. When the alignment work is completed, the lens frame is fixed to the frame holder by, for example, fastening or gluing with screws.

By the way, if the lens frame is fixed to the frame holder by fastening with screws after the alignment work is completed, at least one of the lens frame or the frame holder may be distorted or misaligned at the time of fastening. be.

On the other hand, in the case of fixing by adhesive, the adhesive may shrink during curing and the adhesive may expand due to an external environment such as high temperature, and the fixed state of the lens frame and the frame holder becomes unstable and the lens frame becomes unstable. May cause misalignment with respect to the frame holder.

Therefore, it is an object of the present technology lens device and an image pickup device to overcome the above-mentioned problems, reduce the positional deviation of the lens frame with respect to the frame holder, and secure good optical performance.

First, the lens has a frame-side adhesive portion, a lens frame for holding the lens, and a holding-side adhesive portion, and the frame-side adhesive portion and the holding-side adhesive portion are adhered to each other by an adhesive. A frame holder for holding the frame is provided, and three or more adhesive grooves filled with the adhesive are formed, and the plurality of adhesive grooves are separated in the circumferential direction with respect to a predetermined reference point. Was formed.

As a result, the frame-side adhesive portion and the holding-side adhesive portion are adhered to each other by the adhesive filled in three or more adhesive grooves formed apart from each other in the circumferential direction with respect to a predetermined reference point, and the lens frame. Is fixed to the frame holder.

Secondly, in the above-mentioned lens device, it is desirable that the number of the plurality of adhesive grooves is an even number.

This makes it possible to position a part of the lens frame and a part of the frame holder on both sides of each adhesive groove.

Thirdly, in the above-mentioned lens device, it is desirable that four adhesive grooves are formed.

As a result, the lens frame is fixed to the frame holder by the adhesive filled in the four adhesive grooves.

Fourth, in the lens device described above, it is desirable that the frame-side adhesive portion and the holding-side adhesive portion are alternately positioned in the circumferential direction with the adhesive groove interposed therebetween.

As a result, the frame-side adhesive portion and the holding-side adhesive portion are alternately adhered by the adhesive filled in the adhesive groove.

Fifth, in the lens device described above, in the lens device described above, the plurality of adhesive grooves deviate from the first straight line parallel to the optical axis through the reference point, pass through the reference point, and are orthogonal to the first straight line. It is desirable that it be formed in a position away from.

This makes it possible to position the frame-side adhesive portion or the holding-side adhesive portion on the opposite side in the optical axis direction or the direction orthogonal to the optical axis direction with the reference point in between.

Sixth, in the above-mentioned lens device, it is desirable that the plurality of adhesive grooves are formed at positions line-symmetrical with respect to the virtual line passing through the reference point.

As a result, the lens frame is fixed to the frame holder by the adhesive filled in the adhesive groove formed at the position of line symmetry.

Seventh, in the above-mentioned lens device, it is desirable that the plurality of adhesive grooves are formed at points symmetrical with respect to the reference point.

As a result, the lens frame is fixed to the frame holder by the adhesive filled in the adhesive groove formed at the point-symmetrical position.

Eighth, in the above-mentioned lens device, it is desirable that the plurality of adhesive grooves are formed at equidistant positions in the circumferential direction.

As a result, the lens frame is fixed to the frame holder by the adhesive filled in the adhesive grooves formed at the equidistant positions.

Ninth, in the above-mentioned lens device, it is desirable that at least one of the adhesive grooves is located on the opposite side of the virtual line passing through the reference point.

As a result, the lens frame is fixed to the frame holder by the adhesive filled in at least one adhesive groove located on the opposite side of the virtual line passing through the reference point.

Tenth, in the above-mentioned lens device, it is desirable that the plurality of adhesive grooves are formed in a shape extending in the radial direction about the reference point.

As a result, the lens frame is fixed to the frame holder by each adhesive filled in the adhesive groove having a shape extending in the radial direction about the reference point.

Eleventh, in the above-mentioned lens device, it is desirable that the long side of the adhesive groove is positioned along the frame-side adhesive portion or the holding-side adhesive portion.

As a result, the portion of the adhesive along the long side of the adhesive groove is joined to the frame-side adhesive portion or the holding-side adhesive portion.

Twelvely, in the lens device described above, it is desirable that a reference groove filled with the adhesive is formed at a position including the reference point, and the reference groove is communicated with the plurality of adhesive grooves.

This makes it possible to flow the adhesive into the adhesive groove by discharging the adhesive into the reference groove.

Thirteenth, in the above-mentioned lens device, it is desirable that the filling groove is formed by the reference groove and the plurality of adhesive grooves, and the filling groove is formed in a cross shape.

As a result, the filling groove is formed in a symmetrical shape, so that the adhesive surface of the frame-side adhesive portion and the adhesive surface of the holding-side adhesive portion can have the same area in the circumferential direction with respect to the reference point. ..

Fourth, in the above-mentioned lens device, it is desirable that the opening direction of the adhesive groove is orthogonal to the optical axis direction.

This makes it possible to fill the adhesive groove in the adhesive groove from a direction orthogonal to the optical axis direction.

Fifteenth, in the above-mentioned lens device, it is desirable that the region in which the plurality of adhesive grooves are formed is formed as an adhesive region, and the adhesive regions are separated from each other in the direction around the optical axis.

As a result, the frame-side adhesive portion and the holding-side adhesive portion are adhered to each other in a plurality of adhesive regions separated in the direction around the optical axis.

Sixteenth, in the above-mentioned lens device, the frame holder has a first housing and a second housing in which the frame holders are arranged in the optical axis direction, and a part of the lens frame is the first housing. It is desirable that the second housing is pressed from both sides in the optical axis direction.

As a result, the lens frame is fixed to the frame holder in a state where a part of the lens frame is pressed by the first housing and the second housing from both sides.

Seventeenth, in the above-mentioned lens device, it is desirable that the holding-side adhesive portion is provided in each of the first housing and the second housing.

As a result, the frame-side adhesive portion is adhered to each holding-side adhesive portion of the first housing and the second housing.

Eighteenth, in the above-mentioned lens device, it is desirable that the lens frame is fixed to the frame holder in a state where the first housing and the second housing are fastened to each other.

As a result, since the bonding work is performed with the first housing and the second housing fixed, it is necessary to separately fix the lens frame to the first housing and the second housing. do not have.

Nineteenth, in the above-mentioned lens device, it is desirable that the lens frame is fixed to the frame holder in a state where the inclination with respect to the frame holder is adjusted by the eccentric pin.

As a result, the lens frame is fixed to the frame holder when the inclination of the lens frame with respect to the frame holder is adjusted by the eccentric pin, and the lens frame is attached by adhesion when the inclination of the lens frame with respect to the frame holder is adjusted to an appropriate inclination. It is fixed to the frame holder.

20th, the image pickup device according to the present technology includes a lens device for capturing an optical image and an image pickup element for converting the captured optical image into an electric signal, and the lens device has a frame-side adhesive portion. It includes a lens frame that holds a lens, and a frame holder that has a holding-side adhesive portion and holds the lens frame by adhering the frame-side adhesive portion and the holding-side adhesive portion with an adhesive. Three or more adhesive grooves filled with the adhesive are formed, and the plurality of adhesive grooves are formed so as to be separated from each other in the circumferential direction with respect to a predetermined reference point.

As a result, in the lens device, the frame-side adhesive portion and the holding-side adhesive portion are formed by the adhesive filled in three or more adhesive grooves formed apart from each other in the circumferential direction with respect to a predetermined reference point. It is glued and the lens frame is fixed to the frame holder.

According to the present technology, the frame-side adhesive portion and the holding-side adhesive portion are adhered by an adhesive filled in three or more adhesive grooves formed apart from each other in the circumferential direction with respect to a predetermined reference point. Since the lens frame is fixed to the frame holder, a force is likely to be generated in the frame-side adhesive portion in the direction of canceling the positional deviation with respect to the holding-side adhesive portion, and the positional deviation of the lens frame with respect to the frame holder is reduced and is good. It is possible to secure a good optical performance.

It should be noted that the effects described in the present specification are merely examples and are not limited, and other effects may be used.

2 to 31 show an embodiment of the lens device and the image pickup device of the present technology, and this figure is a perspective view of the image pickup device showing the lens device and the main body of the device separately. It is a conceptual diagram of a lens device. It is an exploded perspective view of the alignment lens group. It is a perspective view of a centering lens group. It is a top view of a lens frame. It is an enlarged perspective view which shows a part of a lens frame. It is an enlarged perspective view which shows the state just before the alignment work is performed. It is an enlarged plan view which shows the state before the centering work is performed and the adhesive is filled. It is an enlarged perspective view which shows the state which the adhesive is filled in the filling groove. FIGS. 11 to 13 explain the action of filling the filling groove with the adhesive, and this figure is a conceptual diagram showing a state when the adhesive is shrunk. It is a conceptual diagram which shows the state when an adhesive is inflated. It is a conceptual diagram which shows the state when the adhesive is shrunk in the filling groove which the length of the adhesive groove is different. It is a conceptual diagram which shows the state when an impact is applied. 15 to 25 show a modified example of the filling groove or the adhesive groove, and this figure is a conceptual diagram showing the first modified example. It is a conceptual diagram which shows the 2nd modification. It is a conceptual diagram which shows the 3rd modification. It is a conceptual diagram which shows the 4th modification. It is a conceptual diagram which shows the 5th modification. It is a conceptual diagram which shows the 6th modification. It is a conceptual diagram which shows the 7th modification. It is a conceptual diagram which shows the 8th modification. It is a conceptual diagram which shows the 9th modification. It is a conceptual diagram which shows the tenth modification. It is a conceptual diagram which shows the eleventh modification. It is a conceptual diagram which shows the twelfth modification. It is a perspective view which shows the application example to the other structure of this invention. 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. 28. 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 exterior information detection unit and the image pickup unit.

Hereinafter, embodiments for implementing the present technique 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 device 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 technique 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 technique can be widely applied to, for example, various image pickup devices incorporated in a video camera or other device as an image pickup device, and a lens device such as a lens barrel composed of 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-right directions are for convenience of explanation, and the implementation of the present technique 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 apparatus 1 (see FIG. 1). The lens device 1 is, for example, an interchangeable lens that can be attached to and detached from the device main body 200. In addition, this technique is a type in which a lens barrel having the same structure as the internal structure of the lens device 1 is incorporated in the device body, or a collapsible type in which the lens barrel protrudes or is stored with respect to the device body. Can also be applied.

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

The lens device 1 has, for example, a plurality of lens groups 3, 3, .... The lens groups 3, 3, ... Are located apart from each other in the axial direction (optical axis direction) of the optical axis T, and are composed of a movable group that can move in the optical axis direction and a fixed group that cannot move in the optical axis direction. Has been done. One of the lens groups 3, 3, ..., The lens group 3 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.

At least one of the lens groups 3, 3, ..., The lens group 3, for example, the third lens group is provided as the alignment lens group 4 on which the alignment work is performed.

The alignment lens group 4 has a lens frame 5 and a frame holder 6 (see FIGS. 3 and 4).

The lens frame 5 includes a lens holding portion 7 formed in an annular shape, pressed protrusions 8, 8, ... Protruding outward (radiating direction) from the lens holding portion 7, and forward from the outer peripheral portion of the lens holding portion 7. It has adhesive protrusions 9, 9, and 9 protruding from the lens (see FIGS. 3 to 5). The pressed protrusions 8, 8, ... And the adhesive protrusions 9, 9, 9 are positioned apart from each other in the circumferential direction, and the adhesive protrusions 9, 9, 9 are, for example, evenly spaced in the circumferential direction. Is located in. The adhesive protrusions 9, 9, and 9 may be removable from the lens holding portion 7, for example. In this case, the frame holder 6 may be integrally formed with a first housing (13) and a second housing (14), which will be described later.

Pin insertion holes 7a, 7a, 7a opened outward in the radial direction are formed in the lens holding portion 7 so as to be separated in the circumferential direction. The pin insertion holes 7a, 7a, 7a are located at equal intervals in the circumferential direction, for example. The lens 10 is held in the lens holding portion 7.

The adhesive protrusions 9, 9, and 9 project forward from the portions of the lens holding portion 7 where the pin insertion holes 7a, 7a, and 7a are formed, respectively. An adhesive base portion 11 is provided on the front end side of the adhesive protrusion 9 (see FIGS. 5 and 6). The adhesive base portion 11 is formed in a disk shape and is located outside the other portion of the adhesive protrusion 9 in the radial direction of the lens holding portion 7. The center of the adhesive base portion 11 is set as a reference point S.

The adhesive protrusion 9 is provided with frame-side adhesive portions 12 and 12 protruding outward from the adhesive base portion 11 in the radial direction of the lens holding portion 7. The frame-side adhesive portions 12 and 12 are separated from each other in the circumferential direction of the adhesive base portion 11 and are located on opposite sides of the reference point S. The surfaces of the frame-side adhesive portions 12 and 12 on the opposite sides are continuous with the base surfaces 12a and 12a formed in an arc shape centered on the reference point S and the front ends of the base surfaces 12a and 12a, and are abbreviated as the adhesive base portion 11. It is composed of a first wall surface 12b, 12b extending in the radial direction, and a second wall surface 12c, 12c continuous with the rear end of the base surfaces 12a, 12a and extending in the substantially radial direction of the adhesive base portion 11.

The frame holder 6 is composed of a first housing 13 located on the front side and a second housing 14 located on the rear side (see FIGS. 3 and 4).

The first housing 13 has an outer cylinder portion 15 formed in a substantially annular shape, an inner cylinder portion 16 formed in a substantially annular shape having a diameter smaller than that of the outer cylinder portion 15, and an outer cylinder portion 15 and an inner cylinder portion. It has a connecting surface portion 17 for connecting the 16. The lens 18 is held in the inner cylinder portion 16.

Insertion recesses 15a, 15a, ... Opened rearward are formed on the rear end surface of the outer tubular portion 15 so as to be separated in the circumferential direction.

Insertion notches 19, 19, and 19 opened rearward are formed at the rear end of the outer tubular portion 15 so as to be separated in the circumferential direction (see FIGS. 3, 7, and 8). The opening edges of the insertion notches 19, 19, and 19 of the outer tubular portion 15 are provided as first holding-side adhesive portions 20, 20, 20 respectively.

The insertion notches 19, 19, 19 are located at equal intervals in the circumferential direction, for example. The insertion notch 19 is continuous with the inner arc surface 19a having an arc surface shape, the wall surfaces 19b and 19b which are continuous at both ends of the inner arc surface 19a in the circumferential direction and separated from each other as they go forward, and the front ends of the wall surfaces 19b and 19b, respectively. By the arc-shaped outer arc surfaces 19c and 19c located outside the inner arc surface 19a, and the inclined surfaces 19d and 19d that are continuous at the rear ends of the outer arc surfaces 19c and 19c and are separated from each other as they go backward. It is formed.

The second housing 14 has a large diameter tubular portion 21 formed in a substantially annular shape and a small diameter formed in a substantially annular shape located behind the large diameter tubular portion 21 and having a smaller diameter than the large diameter tubular portion 21. It has a tubular portion 22 and a connecting portion 23 that connects the large-diameter tubular portion 21 and the small-diameter tubular portion 22 (see FIGS. 3 and 4). The lens 24 is held in the small diameter cylinder portion 22.

Insertion recesses 21a, 21a, ... Opened forward are formed on the front end surface of the large-diameter tubular portion 21 so as to be separated in the circumferential direction.

Stepped support holes 21b, 21b, 21b are formed at the front end of the large-diameter tubular portion 21 so as to be separated in the circumferential direction. The support holes 21b, 21b, 21b are located at equal intervals in the circumferential direction, for example.

The large-diameter tubular portion 21 is provided with second holding-side adhesive portions 25, 25, 25 protruding forward from the portion where the support holes 21b, 21b, 21b are formed (FIGS. 3, 7, and 25). 8). The end faces of the second holding-side adhesive portion 25 are an arcuate inner arc surface 25a, wall surfaces 25b and 25b that are continuous at both ends of the inner arc surface 25a in the circumferential direction and are separated from each other as they go backward, and a wall surface 25b. , 25c and 25c, which are arc-shaped outer arc surfaces and are located outside the inner arc surface 25a, which are continuous at the rear ends of 25b, and are continuous at the front ends of the outer arc surfaces 25c and 25c, respectively, and are separated from each other as they go backward. It is formed by the inclined surfaces 25d and 25d.

<Aligning work in the lens device>
In the alignment lens group 4 of the lens device 1 configured as described above, the alignment work is performed as follows.

In the alignment work, the adhesive protrusions 9, 9, and 9 of the lens frame 5 are inserted into the insertion cutouts 19, 19, and 19 of the first housing 13 from the rear, respectively, and the adhesive protrusions 9, 9, and 9 are inserted. The second holding-side adhesive portions 25, 25, 25 of the second housing 14 are inserted into the insertion cutouts 19, 19, 19 from the rear, respectively (see FIG. 7).

At this time, the support holes 21b, 21b, 21b of the second housing 14 are located outside the pin insertion holes 7a, 7a, 7a of the lens frame 5, respectively. Further, in the lens frame 5, the pressed protrusions 8, 8, ... Are the insertion recesses 15a, 15a, ... Of the first housing 13, and the insertion recesses 21a, 21a, ... Of the second housing 14. It is inserted into and is pressed from the front and back by the first housing 13 and the second housing 14, and the rear end surface of the outer cylinder portion 15 and the front end surface of the large diameter cylinder portion 21 are abutted against each other. The first housing 13 and the second housing 14 are fastened with fastening screws or the like (not shown).

The alignment work is performed using the eccentric pins 26, 26, 26. The eccentric pin 26 has a head 27 and a shaft portion 28 whose axial center is eccentric with respect to the center of the head 27, and a groove 27a into which a jig such as a screwdriver is inserted is formed in the head 27. .. The head 27 of the eccentric pin 26 is inserted into the support hole 21b of the second housing 14, and the shaft portion 28 is inserted into the pin insertion hole 7a of the lens frame 5.

Any of the heads 27, 27, 27 of the eccentric pins 26, 26, 26 and the shaft portions 28, 28, 28 are inserted into the support holes 21b, 21b, 21b and the pin insertion holes 7a, 7a, 7a, respectively. When the eccentric pin 26 is rotated by a jig, the lens frame 5 is tilted with respect to the frame holder 6 and the alignment work is performed.

In this way, the eccentric pins 26, 26, and 26 are rotated by a jig, and the lens frame 5 is adjusted in a direction in which good optical performance can be obtained with respect to the frame holder 6, whereby the alignment work is completed.

<Fixing work in the lens device>
When the alignment work described above is completed, the lens frame 5 is fixed and held by performing the bonding work on the frame holder 6.

As described above, in the lens device 1, the lens frame 5 is fixed to the frame holder 6 in a state where the inclination with respect to the frame holder 6 is adjusted by the eccentric pins 26, 26, 26.

Therefore, since the lens frame 5 is fixed to the frame holder 6 by adhesion in a state where the inclination of the lens frame 5 with respect to the frame holder 6 is adjusted to an appropriate inclination, the lens frame 5 is fixed to the frame holder 6. Good optical performance of the lens device 1 can be ensured in the state.

In the state where the alignment work is performed, as described above, the adhesive protrusions 9, 9, and 9 of the lens frame 5 are inserted into the insertion notches 19, 19, and 19 of the first housing 13 from the rear, respectively. The second holding-side adhesive portions 25, 25, and 25 of the second housing 14 are inserted into the insertion notches 19, 19, and 19 from the rear from the rear of the adhesive protrusions 9, 9, and 9, respectively. See FIG. 8).

At this time, the first holding-side adhesive portion 20 of the first housing 13 and the second holding-side adhesive portion 25 of the second housing 14 are located in the vicinity of the frame-side adhesive portions 12 and 12 of the lens frame 5. The portion where the frame-side adhesive portions 12, 12 and the first holding-side adhesive portion 20 and the second holding-side adhesive portion 25 are present is formed as the adhesive region 29. Therefore, the alignment lens group 4 is formed with three adhesive regions 29, 29, and 29 separated from each other in the direction around the optical axis. In the lens device 1, the number of adhesive regions 29 formed is arbitrary, and at least one of them may be formed.

In the adhesive region 29, the front ends of the frame-side adhesive portions 12 and 12 are positioned in contact with or close to the portions of the outer arc surfaces 19c and 19c of the insertion notch 19 near the front ends, respectively, and the frame-side adhesive portions 12 and 12 are positioned. The rear ends are positioned in contact with or close to the rear ends of the outer arc surfaces 19c and 19c of the insertion notch 19, respectively. Further, the inclined surfaces 19d and 19d of the first housing 13 and the inclined surfaces 25d and 25d of the second housing 14 are positioned in contact with each other or in close proximity to each other.

In the bonding region 29, the base surfaces 12a, 12a, the inner arc surface 19a, and the inner arc surface 25a are positioned concentrically on the circumferential direction, and the base surfaces 12a, 12a, the inner arc surface 19a, and the inner arc surface 25a are used. A substantially circular reference groove 30 including the reference point S is formed. Further, in the bonding region 29, the first wall surfaces 12b, 12b and the wall surfaces 19b, 19b are positioned so as to face each other, and the space between the first wall surfaces 12b, 12b and the wall surfaces 19b, 19b is the bonding groove 31, respectively. , 31. Similarly, in the bonding region 29, the second wall surfaces 12c and 12c and the wall surfaces 25b and 25b are positioned so as to face each other, and the space between the second wall surfaces 12c and 12c and the wall surfaces 25b and 25b is also a bonding groove, respectively. It is formed as 31, 31.

Therefore, in the adhesive region 29, a substantially circular reference groove 30 and four adhesive grooves 31, 31, ... Are formed apart from each other in the circumferential direction, and the reference groove 30 and the adhesive grooves 31, 31 are formed. ... is communicated. The adhesive grooves 31, 31, ... Are in a state of extending in the radial direction with respect to the reference point S, and the filling groove 32 is formed by the reference groove 30 and the adhesive grooves 31, 31, .... The filling grooves 32 are formed in a substantially cross shape, and the adhesive grooves 31, 31, ... Are located at equal intervals in the circumferential direction, for example. The filling groove 32 has an opening direction orthogonal to the optical axis direction.

The reference groove 30 is not limited to the arc shape, and may be formed in another shape such as a rectangular shape.

In the adhesive region 29, as described above, the adhesive grooves 31, 31, ... Are located apart from each other in the circumferential direction, and the frame-side adhesive portions are sequentially located between the adhesive grooves 31, 31, ... In the circumferential direction. 12, the first holding-side adhesive portion 20, the frame-side adhesive portion 12, and the second holding-side adhesive portion 25 are located.

Further, the adhesive grooves 31, 31, ... Also deviate from the first straight line P passing through the reference point S and parallel to the optical axis T, and also from the second straight line Q passing through the reference point S and orthogonal to the first straight line P. It is formed in an off position. Therefore, the adhesive grooves 31, 31, ... Are in a state of extending in a direction inclined with respect to the first straight line P and the second straight line Q.

However, in the lens device 1, the adhesive grooves 31, 31, ... May be in a state of extending in the directions of the first straight line P and the second straight line Q.

Further, the bonding grooves 31, 31, ... Are formed at positions symmetrical with respect to the virtual line (first straight line P or second straight line Q) passing through the reference point S, and are centered on the reference point S. It is formed at a point-symmetrical position, and at least one bonding groove 31 is located on the opposite side of the virtual line passing through the reference point S.

The work of adhering the lens frame 5 to the frame holder 6 is performed by filling the filling groove 32 with the adhesive 33 (see FIG. 9). To fill the filling groove 32 with the adhesive 33, for example, the adhesive 33 is discharged from the needle 300 into the reference groove 30, and the adhesive 33 discharged into the reference groove 30 flows into the adhesive grooves 31, 31, ... It is done by being done.

As described above, in the lens device 1, the reference groove 30 filled with the adhesive 33 is formed at the position including the reference point S, and the reference groove 30 is communicated with the adhesive grooves 31, 31, .... Therefore, by discharging the adhesive 33 into the reference groove 30, it becomes possible to flow the adhesive 33 into the adhesive grooves 31, 31, ....

Therefore, it is not necessary to separately fill the adhesive grooves 31, 31, ... With the adhesive 33, and it is possible to improve the workability in the fixing work of the lens frame 5 to the frame holder 6.

In the lens device 1, the filling groove 32 is formed by being surrounded by the frame-side adhesive portions 12, 12 and each surface of the first holding-side adhesive portion 20 and the second holding-side adhesive portion 25. , Each surface of these frame-side adhesive portions 12, 12 and the first holding-side adhesive portion 20 and the second holding-side adhesive portion 25 becomes a reference groove 30 from the outside to the inside in a direction orthogonal to the optical axis direction. It may be formed on an inclined surface such that the widths of the adhesive grooves 31, 31, ... Are small.

By making each surface of the frame-side adhesive portions 12, 12 and the first holding-side adhesive portion 20 and the second holding-side adhesive portion 25 inclined surfaces in this way, the adhesive 33 was discharged into the reference groove 30. The fluidity of the adhesive 33 at that time is increased, and the reference groove 30 and the adhesive grooves 31, 31, ... Can be quickly and surely filled with the adhesive 33.

Further, the bottom surface of the adhesive groove 31, 31, ... Is located inside the bottom surface of the reference groove 30 in the direction orthogonal to the optical axis direction, or the depth of the adhesive groove 31, 31, ... Is set. It is also possible to increase the fluidity of the adhesive 33 by making the depth deeper than the reference groove 30.

Further, in order to increase the fluidity of the adhesive 33, the depth of the reference groove 30 is increased as the distance from the reference point S increases, and the depth of the adhesive groove 31 increases as the distance from the reference groove 30 increases. It may be.

When the adhesive 33 filled in the reference groove 30 and the adhesive grooves 31, 31, ... Is cured, the frame-side adhesive portions 12, 12 and the first holding-side adhesive portion 20 are adhered by the adhesive 33. At the same time, the frame-side adhesive portions 12, 12 and the second holding-side adhesive portion 25 are adhered to each other. Therefore, the lens frame 5 is fixed to the frame holder 6.

Further, since the adhesive grooves 31, 31, ... Are formed in a shape extending in the radial direction about the reference point S, the adhesive grooves 31, 31, ... In the shape extending in the radial direction about the reference point S, The lens frame 5 is fixed to the frame holder 6 by each of the adhesives 33 filled in.

Therefore, it is possible to increase the filling amount of the adhesive 33 in a small space, and it is possible to secure a high fixing strength of the frame holder 6 to the lens frame 5.

Further, the long sides (sides extending in the radial direction) of the adhesive grooves 31, 31, ... Are along the frame side adhesive portions 12, 12, the first holding side adhesive portions 20 or the second holding side adhesive portions 25. It is located.

Therefore, the portion of the adhesive 33 along the long side of the adhesive grooves 31, 31, ... Is joined to the frame side adhesive portions 12, 12, the first holding side adhesive portion 20 or the second holding side adhesive portion 25. Therefore, the adhesive area of the frame-side adhesive portions 12, 12, the first holding-side adhesive portion 20 or the second holding-side adhesive portion 25 becomes large, and high fixing strength of the frame holder 6 to the lens frame 5 is ensured. be able to.

Furthermore, the filling groove 32 is formed by the reference groove 30, the adhesive grooves 31, 31, ..., And the filling groove 32 is formed in a cross shape.

Therefore, since the filling groove 32 is formed in a symmetrical shape, the adhesive surface of the frame-side adhesive portions 12 and 12 and the adhesive surface of the holding-side adhesive portions 20 and 25 have the same area in the circumferential direction with respect to the reference point S. It becomes possible to secure a stable fixed state of the lens frame 5 and the frame holder 6.

Further, since the opening direction of the filling groove 32 including the adhesive grooves 31, 31, ... Is set to be orthogonal to the optical axis direction, the adhesive 33 is applied to the adhesive grooves 31, 31, ... In the optical axis direction. It becomes possible to fill from the direction orthogonal to the adhesive 33, and the filling work for the reference groove 30 and the adhesive grooves 31, 31, ... Of the adhesive 33 can be easily performed.

Further, the portions where the adhesive grooves 31, 31, ... Are formed are provided as the adhesive regions 29, and a plurality of adhesive regions 29 are provided apart from each other in the direction around the optical axis.

Therefore, since the frame-side adhesive portions 12 and 12 and the holding-side adhesive portions 20 and 25 are adhered to each other in the plurality of adhesive regions 29 separated in the direction around the optical axis, high fixing strength of the frame holder 6 to the lens frame 5 is ensured. can do.

Further, the frame holder 6 has a first housing 13 and a second housing 14 arranged in the optical axis direction, and a part of the lens frame 5 is formed in the first housing 13 and the second housing 14. It is pressed from both sides in the optical axis direction.

Therefore, since the lens frame 5 is fixed to the frame holder 6 in a state where a part of the lens frame 5 is pressed by the first housing 13 and the second housing 14 from both sides, the lens frame 5 is fixed to the frame holder 6 during the fixing operation. It is not displaced with respect to 6, and workability in fixing work of the lens frame 5 to the frame holder 6 can be improved.

Furthermore, the first housing 13 and the second housing 14 are provided with a first holding-side adhesive portion 20 and a second holding-side adhesive portion 25, respectively.

Therefore, the frame-side adhesive portions 12 and 12 are adhered to the first holding-side adhesive portion 20 of the first housing 13 and the second holding-side adhesive portion 25 of the second housing 14, and the bonding work is performed once. As a result, the lens frame 5 is fixed to the first housing 13 and the second housing 14, and workability in the fixing work of the lens frame 5 to the frame holder 6 can be improved.

In addition, the lens frame 5 is fixed to the frame holder 6 in a state where the first housing 13 and the second housing 14 are fastened.

Therefore, since the bonding work is performed in a state where the first housing 13 and the second housing 14 are fixed, the lens frame 5 is separately provided for the first housing 13 and the second housing 14. It is not necessary to fix the lens frame 5, and workability in the fixing work of the lens frame 5 to the frame holder 6 can be improved.

In the centering lens group 4, the lens frame 5 also holds the frame by releasing the fastened state of the first housing 13 and the second housing 14 and releasing the bonded state by pulling them back and forth. It can be removed from the body 6.

<Action of the adhesive to fill the filling groove on the lens frame, etc.>
Hereinafter, the action of the adhesive 33 filling the filling groove 32 on the lens frame 5 and the like will be described (see FIGS. 10 to 13).

The adhesive 33 filled in the filling groove 32 may shrink during curing. When the adhesive 33 contracts, a tensile force is applied to each of the frame-side adhesive portions 12 and 12 of the lens frame 5 (see FIG. 10). The tensile force applied to the base surfaces 12a and 12a is A1 and A2, the tensile force applied to the first wall surfaces 12b and 12b is B1 and B2, and the tensile force applied to the second wall surfaces 12c and 12c is defined as B1 and B2. Assuming C1 and C2, A1 and A2 are forces of the same magnitude and generated in opposite directions, B1 and C2 are forces of the same magnitude and generated in opposite directions, and B2 and C1 are forces of the same magnitude and generated in opposite directions. It is power.

Therefore, A1 and A2 act to cancel the displacement in the translational direction with respect to the lens frame 5, B1 and C2 act to cancel the displacement in the translational direction with respect to the lens frame 5, and C1 and B2 act to cancel the displacement in the translational direction. It acts to cancel the displacement in the translational direction with respect to the lens frame 5.

Further, B1 and B2 act on the lens frame 5 to cancel the displacement in the rotation direction, and C1 and C2 act on the lens frame 5 to cancel the displacement in the rotation direction.

When the adhesive 33 is contracted in this way, a force acts on the lens frame 5 so as to cancel the displacement in the translational direction and the displacement in the rotational direction, so that the lens frame 5 has a force with respect to the frame holder 6. Misalignment is prevented.

On the contrary, the adhesive 33 filled in the filling groove 32 may expand due to an external environment such as high temperature. When the adhesive 33 expands, a pressing force is applied to each of the frame-side adhesive portions 12 and 12 of the lens frame 5 (see FIG. 11). The pressing force applied to the base surfaces 12a and 12a is D1 and D2, the pressing force applied to the first wall surfaces 12b and 12b is E1 and E2, and the pressing force applied to the second wall surfaces 12c and 12c is. Assuming F1 and F2, D1 and D2 are forces of the same magnitude and generated in opposite directions, E1 and F2 are forces of the same magnitude and generated in opposite directions, and E2 and F1 are forces of the same magnitude and generated in opposite directions. It is power.

Therefore, D1 and D2 act to cancel the displacement in the translational direction with respect to the lens frame 5, E1 and F2 act to cancel the displacement in the translational direction with respect to the lens frame 5, and F1 and E2 act to cancel the displacement in the translational direction. It acts to cancel the displacement in the translational direction with respect to the lens frame 5.

Further, E1 and E2 act on the lens frame 5 to cancel the displacement in the rotation direction, and F1 and F2 act on the lens frame 5 to cancel the displacement in the rotation direction.

Even when the adhesive 33 is expanded in this way, a force acts on the lens frame 5 so as to cancel the displacement in the translational direction and the displacement in the rotational direction, so that the lens frame 5 has a force with respect to the frame holder 6. Misalignment is prevented.

In the above description, the action when the adhesive 33 contracts or expands in the filling groove 32 formed in the shape of line symmetry and point symmetry has been described, but the lens device 1 has the shape of line symmetry or point symmetry. A filling groove 32A that is not formed in may be formed, and even in the case of a filling groove 32A having such a shape, the following actions occur (see FIG. 12).

Hereinafter, the case where the adhesive 33 shrinks will be described as an example.

The filling groove 32A is configured to have different lengths in the radial direction with respect to the reference point S of the adhesive grooves 31, 31, ..., For example.

When the adhesive 33 filled in the filling groove 32A shrinks, a tensile force is applied to each of the frame-side adhesive portions 12 and 12 of the lens frame 5. The tensile force applied to the base surfaces 12a and 12a is A1 and A2, the tensile force applied to the first wall surfaces 12b and 12b is B1 and B2, and the tensile force applied to the second wall surfaces 12c and 12c is defined as B1 and B2. Assuming C1 and C2, A1 and A2 are forces of the same magnitude and generated in opposite directions, B1 and C2 are smaller forces in B1 but generated in opposite directions, and B2 and C1 are smaller in C1. It is a force generated in the opposite direction.

Therefore, A1 and A2 act to cancel the displacement in the translational direction with respect to the lens frame 5. Since B1 and C2 have different magnitudes but are generated in opposite directions, they act to cancel the displacement in the translational direction with respect to the lens frame 5 by the amount of B1, and C1 and B2 have different magnitudes. Is a force generated in the opposite direction, so that it acts to cancel the displacement in the translational direction with respect to the lens frame 5 by the amount of C1.

Further, since B1 and B2 have different sizes, a part of them acts to cancel the displacement in the rotation direction with respect to the lens frame 5, and since C1 and C2 have different sizes, a part of them has a different size of the lens frame. It acts to cancel the displacement in the rotation direction with respect to 5.

When the adhesive 33 is contracted in this way, a part of the force acts on the lens frame 5 so as to cancel the displacement in the translational direction and the displacement in the rotation direction, so that the frame of the lens frame 5 is held. The displacement with respect to the body 6 is suppressed.

On the other hand, the lens device 1 may be subjected to an impact due to dropping or the like. For example, when a forward impact is applied to the lens device 1, forward forces G and G due to the impact are applied to the frame-side adhesive portions 12 and 12 (see FIG. 13). The forces G and G are forces in a direction that displace the frame-side adhesive portions 12 and 12 forward, but on the front side of the first wall surfaces 12b and 12b are the wall surfaces 19b and 19b of the first holding-side adhesive portions 20. Since the adhesive 33 filled in the adhesive grooves 31 and 31 is present between the two, the adhesive 33 receives the first wall surfaces 12b and 12b and prevents the frame-side adhesive portions 12 and 12 from being displaced forward. Will be done.

Further, for example, when a rearward impact is applied to the lens device 1, backward forces G and G are applied to the frame-side adhesive portions 12 and 12. The forces G and G are forces in the direction of displaced the frame-side adhesive portions 12 and 12 to the rear, but the walls 25b and 25b of the second holding-side adhesive portions 25 are on the rear side of the second wall surface 12c and 12c. Since the adhesive 33 filled in the adhesive grooves 31 and 31 exists between the two, the second wall surfaces 12c and 12c are received by the adhesive 33, and the frame-side adhesive portions 12 and 12 are displaced rearward. Be prevented.

Further, for example, when an impact in the left-right direction is applied to the lens device 1, forces G, G to the left or right are applied to the frame-side adhesive portions 12, 12. The forces G and G are forces in the direction of shifting the frame-side adhesive portions 12 and 12 to the left or right, but on the right side of the left-side frame-side adhesive portion 12 or on the left side of the right-side frame-side adhesive portion 12 Since the adhesive 33 filled in the reference groove 30 or the adhesive grooves 31, 31 is present, the adhesive 33 receives the left frame side adhesive portion 12 or the right frame side adhesive portion 12 and receives the frame side adhesive portion 12. , 12 is prevented from being displaced in the left-right direction.

When the forces G and G in the direction of displacement to the frame-side adhesive portions 12 and 12 are applied due to an impact or the like, at least a part of the frame-side adhesive portions 12 and 12 is at least a part of the adhesive 33. Therefore, the displacement of the frame-side adhesive portions 12 and 12 is prevented, and the positional deviation of the lens frame 5 with respect to the frame holder 6 is prevented.

<Summary>
As described above, in the lens device 1, three or more adhesive grooves 31, 31, ... Are formed in which the adhesive 33 is filled, and the adhesive grooves 31, 31, ... Are reference points. They are formed apart from each other in the circumferential direction with respect to S.

Therefore, the adhesive 33 filled in the three or more adhesive grooves 31, 31, ... Formed apart from each other in the circumferential direction with respect to the reference point S causes the frame-side adhesive portions 12, 12 and the holding side. Since the adhesive portions 20 and 25 are adhered and the lens frame 5 is fixed to the frame holder 6, a force is likely to be generated on the frame side adhesive portions 12 and 12 in the direction of canceling the positional deviation with respect to the holding side adhesive portions 20 and 25. The positional deviation of the lens frame 5 with respect to the frame holder 6 can be reduced to ensure good optical performance.

Further, since the number of the adhesive grooves 31, 31, ... Is an even number, a part of the lens frame 5 and a part of the frame holder 6 are provided on both sides of each of the adhesive grooves 31, 31, ... It becomes possible to position the lens frame 5 and the frame holder 6 in a stable fixed state.

In particular, as described above, by forming four adhesive grooves 31, 31, ..., The lens frame 5 holds the frame by the adhesive 33 filled in the four adhesive grooves 31, 31, .... Since it is fixed to the body 6, it is possible to secure a stable fixed state of the lens frame 5 and the frame holder 6 after reducing the filling amount of the adhesive 33.

In the lens device 1, the number of the adhesive grooves 31 is not limited to an even number, and in the case of an even number, the number is not limited to four, and may be an odd number of three or more. It may be an even number of 6 or more.

Further, since the frame-side adhesive portions 12, 12 and the holding-side adhesive portions 20, 25 are alternately positioned in the circumferential direction with the adhesive grooves 31, 31, ... The holding-side adhesive portions 20, 25 are alternately adhered by the adhesive 33 filled in the adhesive grooves 31, 31, ..., And a stable fixed state of the lens frame 5 and the frame holder 6 can be ensured.

Furthermore, from the second straight line Q where the adhesive grooves 31, 31, ... Pass through the reference point S and deviate from the first straight line P parallel to the optical axis T, pass through the reference point S and are orthogonal to the first straight line P. Therefore, the frame-side adhesive portions 12, 12 or the holding-side adhesive portions 20, 25 are positioned on the opposite sides of the reference point S in the optical axis direction or in the direction orthogonal to the optical axis direction. This makes it possible to bond the frame-side adhesive portions 12 and 12 and the holding-side adhesive portions 20 and 25 in a stable state.

In the lens device 1, the adhesive groove 31 may exist on the first straight line P or the second straight line Q.

Further, the adhesive grooves 31, 31, ... Are formed at positions symmetrical with respect to the virtual line passing through the reference point S.

Therefore, the lens frame 5 is fixed to the frame holder 6 by the adhesive 33 filled in the adhesive grooves 31, 31, ... Formed at line-symmetrical positions, so that the adhesive 33 shrinks or expands. In such a case, a force is likely to be generated on the frame-side adhesive portions 12 and 12 in the direction of canceling the positional deviation with respect to the holding-side adhesive portions 20 and 25, and it is possible to secure an appropriate positional relationship of the lens frame 5 with respect to the frame holder 6. can.

Further, the adhesive grooves 31, 31, ... Are formed at points symmetrical with respect to the reference point S.

Therefore, the lens frame 5 is fixed to the frame holder 6 by the adhesive 33 filled in the adhesive grooves 31, 31, ... Formed at point-symmetrical positions, so that the adhesive 33 shrinks or expands. In such a case, a force is likely to be generated on the frame-side adhesive portions 12 and 12 in the direction of canceling the positional deviation with respect to the holding-side adhesive portions 20 and 25, and it is possible to secure an appropriate positional relationship of the lens frame 5 with respect to the frame holder 6. can.

In the lens device 1, the adhesive grooves 31, 31, ... May be formed at positions other than line symmetry, or may be formed at positions other than point symmetry.

Furthermore, since the adhesive grooves 31, 31, ... Are formed at equidistant positions, the lens is formed by the adhesive 33 filled in the adhesive grooves 31, 31, ... Formed at the equidistant positions. The frame 5 is fixed to the frame holder 6.

Therefore, when the adhesive 33 shrinks or expands, a force is likely to be generated on the frame-side adhesive portions 12 and 12 in the direction of canceling the positional deviation with respect to the holding-side adhesive portions 20 and 25, and the frame-holding body of the lens frame 5 It is possible to secure an appropriate positional relationship with respect to 6.

In the lens device 1, at least three adhesive grooves 31, 31, ... May be configured such that at least three are formed at equidistant positions and some are not formed at equidistant positions. .. Further, the lens device 1 may be configured such that all of the adhesive grooves 31, 31, ... Are not formed at equidistant positions.

In addition, since at least one of the adhesive grooves 31, 31, ... Is located on the opposite side of the virtual line passing through the reference point S, on the opposite side of the virtual line passing through the reference point S. The lens frame 5 is fixed to the frame holder 6 by the adhesive 33 filled in at least one of the positioned adhesive grooves 31, 31, ....

Therefore, when the adhesive 33 shrinks or expands, a force is likely to be generated on the frame-side adhesive portions 12 and 12 in the direction of canceling the positional deviation with respect to the holding-side adhesive portions 20 and 25, and the frame-holding body of the lens frame 5 It is possible to secure an appropriate positional relationship with respect to 6.

<Modification example of filling groove or adhesive groove>
An example of modification of the filling groove or the adhesive groove will be described below (see FIGS. 14 to 25). In each figure referred to in each modification shown below, only the filling groove or the adhesive groove is shown, and the frame-side adhesive portion and the holding-side adhesive portion existing around the filling groove or the adhesive groove are omitted.

The first modification is an example in which four adhesive grooves 31, 31, ... Are formed, but the reference groove 30 is not formed (see FIG. 14). The adhesive grooves 31, 31, ... Are located at equal intervals in the circumferential direction with respect to the reference point S, for example.

In the second modification, the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed, and the adhesive grooves 31, 31, ... Are on the first straight line P or the second straight line Q. This is an example located above (see FIG. 15).

In the third modification, the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed, and the adhesive grooves 31, 31, ... Are on the first straight line P or the second straight line Q. This is an example that is not located in any of the above (see FIG. 16). Further, the adhesive grooves 31, 31, ... Are not present at positions line-symmetrical with respect to either the first straight line P or the second straight line Q, but are point-symmetrical with respect to the reference point S. There is.

In the fourth modification, the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed, and the length of the adhesive grooves 31, 31, ... In the radial direction with respect to the reference point S. Is a different example (see FIG. 17). The adhesive grooves 31, 31, ... Have at least one length different from the other.

The fifth modification is an example in which the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed and are formed in a line-symmetrical shape with respect to the first straight line P (FIG. 18). reference).

The sixth modification is an example in which the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed and formed in a line-symmetrical shape with respect to the second straight line Q (FIG. 19). reference).

The seventh modification is an example in which the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed and formed in a point-symmetrical shape with respect to the reference point S (see FIG. 20). .. However, the shape is not line-symmetrical.

The eighth modification is an example in which the reference groove 30 and the four adhesive grooves 31, 31, ... Are formed and are neither line-symmetrical nor point-symmetrical (Fig.). 21).

In the second modification to the eighth modification, the reference groove 30 may not be formed and only the adhesive grooves 31, 31, ... May be formed.

The ninth modification is an example in which the reference groove 30 and the six adhesive grooves 31, 31, ... Are formed (see FIG. 22). The adhesive grooves 31, 31, ... Are located at equal intervals in the circumferential direction with respect to the reference point S, for example. Although this example is an example in which six adhesive grooves 31, 31, ... Are formed, the number of adhesive grooves 31 may be other than six.

The tenth modification is an example in which six adhesive grooves 31, 31, ... Are formed, but the reference groove 30 is not formed (see FIG. 23). The adhesive grooves 31, 31, ... Are located at equal intervals in the circumferential direction with respect to the reference point S, for example. This example is also an example in which six adhesive grooves 31, 31, ... Are formed as in the ninth modification, but the number of adhesive grooves 31 may be other than six.

In the ninth modification and the tenth modification, the shape may be other than line symmetry, or may be a shape other than point symmetry.

The eleventh modification is an example in which a reference groove 30 and a filling groove 32 having four adhesive grooves 31, 31, ... Are continuously formed (see FIG. 24). The adhesive grooves 31, 31, ... Are formed in a shared state in, for example, at least one continuous filling groove 32, 32. In this example, an example in which two filling grooves 32 are continuous is shown, but the number of continuous filling grooves 32 is arbitrary and may be three or more. Further, the continuous direction is not limited to the front-back direction or the left-right direction, and may be an oblique direction with respect to the front-back direction or the left-right direction. It may be continuous in two orthogonal directions such as those provided in the same direction.

The twelfth modification is an example in which the reference groove 30 and the filling groove 32 having the six adhesive grooves 31, 31, ... Are continuously formed (see FIG. 25). The adhesive grooves 31, 31, ... Are formed in a shared state in, for example, at least one continuous filling groove 32, 32. In this example, an example in which two filling grooves 32 are continuous is shown, but the number of continuous filling grooves 32 is arbitrary and may be three or more. Further, the continuous direction is not limited to the front-back direction or the left-right direction, and may be an oblique direction with respect to the front-back direction or the left-right direction. It may be continuous in two orthogonal directions such as those provided in the same direction.

<Others>
In the above, the present invention has been applied to the fixing work of the lens frame 5 to the frame holder 6 in which the inclination of the lens frame 5 is adjusted with respect to the frame holder 6, but the present invention has been shown, for example, in the optical axis direction. It is also possible to apply to an example in which the lens frame is displaced and adjusted with respect to the frame holder in the orthogonal direction (see FIG. 26).

As such an example, there is an example in which the lens frame 5A is displaceable with respect to the frame holder 6A in the direction orthogonal to the optical axis T. The lens 40 is held in the central portion of the lens frame 5A, and insertion holes 41 and 41 are formed on the opposite sides of the lens frame 5A with the lens 40 interposed therebetween, respectively. The peripheral portions of the insertion holes 41 and 41 in the lens frame 5A are provided as frame-side adhesive portions 42 and 42, respectively.

A lens (not shown) is held in the center of the frame holder 6A. One surface of the frame holder 6A in the optical axis direction is formed as an arrangement surface 43 on which the lens frame 5A is arranged. The frame holding body 6A is provided with holding-side adhesive portions 44, 44, ... To be inserted into the insertion holes 41, 41 on the arrangement surface 43 side.

In the state where the holding side adhesive portions 44, 44, ... Are inserted into the insertion holes 41, 41, the frame side adhesive portions 42, 42 and the holding side adhesive portions 44, 44, ... A gap is formed between the two, and this gap is formed as the filling grooves 45, 45.

In the example configured as described above, the lens frame 5A is orthogonal to the frame holder 6A in the optical axis direction in a state where the holding side adhesive portions 44, 44, ... Are inserted into the insertion holes 41, 41. The optical axis T of the lens held by the frame holder 6A and the optical axis T of the lens 40 held by the lens frame 5A are aligned by being displaced in the direction and adjusted.

When the alignment is completed, the filling grooves 45 and 45 are filled with the adhesives 33 and 33, respectively, and the lens frame 5A is fixed to the frame holder 6A.

<One Embodiment of an image pickup device>
Hereinafter, a configuration example of an embodiment of the image pickup apparatus of the present technology will be described (see FIG. 27).

The image pickup device 100 includes a lens device 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. 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 for which a user performs a required operation, and a lens drive control unit 86 that controls the drive of a lens arranged in the lens device 1. And have.

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 device 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 technique 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. 28 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. 28 illustrates 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 is only 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 number of pixels 3840 x vertical pixel number 2160) or 8K (horizontal pixel number 7680 x vertical pixel number 4320), and / or 3D display. In the case of 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 corresponding to each of the display devices 5041. 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 cauterizing, incising, sealing blood vessels, and the like. The pneumoperitoneum device 5051 gas in the body cavity of the patient 5071 via 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 as 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. 28, for the sake of simplicity. , The configuration of the arm portion 5031 is simplified and shown. 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.

Actuators are 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 actuators. 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. It is possible to obtain a fluorescence image by irradiating the excitation light corresponding to the fluorescence wavelength of the reagent. 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. 29. FIG. 29 is a block diagram showing an example of the functional configuration of the camera head 5005 and CCU5039 shown in FIG. 28.

Referring to FIG. 29, 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, which has a Bayer array and is 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. In addition, 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 surgery 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 techniques 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 device such as a lens barrel and an image pickup device 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 technique according to the present disclosure can be applied to various products. For example, the technology according to the present disclosure is any kind of movement such as an automobile, an electric vehicle, a hybrid electric vehicle, a motorcycle, a bicycle, a personal mobility, an airplane, a drone, a ship, a robot, a construction machine, and an agricultural machine (tractor). It may be realized as a device mounted on the body.

FIG. 30 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. 30, 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. 30, 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 a driving force of a 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 speed 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 angles, engine speeds, wheel speeds, 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 a 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 ambient 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. 31 shows an example of the installation position of the image pickup unit 7410 and the vehicle exterior 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. 31 shows an example of the photographing range of each of the imaging units 7910, 7912, 7914, and 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 as viewed from above 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.

Returning to FIG. 30, the description will be continued. 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 the 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 the 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 determines whether or not the driver is dozing. 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 occupant, 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 above 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 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. 30, 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. 30, 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 any control unit may be connected to another control unit, and a 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)
A lens frame that has an adhesive part on the frame side and holds the lens,
It has a holding-side adhesive portion, and includes a frame-holding body in which the lens frame is held by adhering the frame-side adhesive portion and the holding-side adhesive portion with an adhesive.
Three or more adhesive grooves filled with the adhesive are formed.
A lens device in which the plurality of adhesive grooves are separated in the circumferential direction with respect to a predetermined reference point.

(2)
The lens device according to (1) above, wherein the number of the plurality of adhesive grooves is an even number.

(3)
The lens device according to (2) above, wherein four adhesive grooves are formed.

(4)
The lens device according to any one of (1) to (3), wherein the frame-side adhesive portion and the holding-side adhesive portion are alternately positioned in the circumferential direction with the adhesive groove interposed therebetween.

(5)
The plurality of adhesive grooves are formed at positions deviating from the first straight line passing through the reference point and parallel to the optical axis and deviating from the second straight line passing through the reference point and orthogonal to the first straight line. ) To the lens device according to any one of (4) above.

(6)
The lens device according to any one of (1) to (5) above, wherein the plurality of adhesive grooves are formed at positions line-symmetrical with respect to a virtual line passing through the reference point.

(7)
The lens device according to any one of (1) to (5) above, wherein the plurality of adhesive grooves are formed at points symmetrical with respect to the reference point.

(8)
The lens device according to any one of (1) to (7) above, wherein the plurality of adhesive grooves are formed at equidistant positions in the circumferential direction.

(9)
The lens device according to any one of (1) to (8), wherein at least one of the adhesive grooves is located on the opposite side of the virtual line passing through the reference point.

(10)
The lens device according to any one of (1) to (9) above, wherein the plurality of adhesive grooves are formed in a shape extending in the radial direction about the reference point.

(11)
The lens device according to (10), wherein the long side of the adhesive groove is located along the frame-side adhesive portion or the holding-side adhesive portion.

(12)
A reference groove filled with the adhesive is formed at a position including the reference point, and the reference groove is formed.
The lens device according to any one of (1) to (11), wherein the reference groove is communicated with the plurality of adhesive grooves.

(13)
A filling groove is formed by the reference groove and the plurality of adhesive grooves, and the filling groove is formed.
The lens device according to (12) above, wherein the filling groove is formed in a cross shape.

(14)
The lens apparatus according to any one of (1) to (13), wherein the opening direction of the adhesive groove is orthogonal to the optical axis direction.

(15)
The region where the plurality of adhesive grooves are formed is formed as an adhesive region.
The lens device according to any one of (1) to (14) above, wherein a plurality of the adhesive regions are formed apart from each other in the direction around the optical axis.

(16)
The frame holder has a first housing and a second housing in which the frame holders are arranged in the optical axis direction.
The lens device according to any one of (1) to (15), wherein a part of the lens frame is pressed by the first housing and the second housing from both sides in the optical axis direction.

(17)
The lens device according to (16), wherein the holding side adhesive portion is provided in each of the first housing and the second housing.

(18)
The lens device according to (16) or (17), wherein the lens frame is fixed to the frame holder in a state where the first housing and the second housing are fastened to each other.

(19)
The lens device according to any one of (1) to (18), wherein the lens frame is fixed to the frame holder in a state where the inclination of the lens frame with respect to the frame holder is adjusted by an eccentric pin.

(20)
It is equipped with a lens device that captures an optical image and an image sensor that converts the captured optical image into an electrical signal.
The lens device is
A lens frame that has an adhesive part on the frame side and holds the lens,
It has a holding-side adhesive portion, and includes a frame-holding body in which the lens frame is held by adhering the frame-side adhesive portion and the holding-side adhesive portion with an adhesive.
Three or more adhesive grooves filled with the adhesive are formed.
An image pickup device in which the plurality of adhesive grooves are separated in the circumferential direction with respect to a predetermined reference point.

100 ... Image pickup device, 204 ... Image pickup element, 1 ... Lens device, 5 ... Lens frame, 6 ... Frame holder, 12 ... Frame side adhesive portion, 13 ... First housing, 14 ... Second housing, 20 ... 1st holding side adhesive portion, 25 ... 2nd holding side adhesive portion, 26 ... eccentric pin, 29 ... adhesive region, 30 ... reference groove, 31 ... adhesive groove, 32 ... filling groove, 33 ... adhesive, 32A ... Filling groove, 5A ... Lens frame, 6A ... Frame holder, 42 ... Frame side adhesive part, 44 ... Holding side adhesive part, 45 ... Filling groove, S ... Reference point, P ... First straight line, Q ... Second Straight line, T ... optical axis

Claims (20)

A lens frame that has an adhesive part on the frame side and holds the lens,
It has a holding-side adhesive portion, and includes a frame-holding body in which the lens frame is held by adhering the frame-side adhesive portion and the holding-side adhesive portion with an adhesive.
Three or more adhesive grooves filled with the adhesive are formed.
A lens device in which the plurality of adhesive grooves are separated in the circumferential direction with respect to a predetermined reference point. The lens device according to claim 1, wherein the number of the plurality of adhesive grooves is an even number. The lens device according to claim 2, wherein four adhesive grooves are formed. The lens device according to any one of claims 1 to 3, wherein the frame-side adhesive portion and the holding-side adhesive portion are alternately positioned in the circumferential direction with the adhesive groove interposed therebetween. Claim 1 in which the plurality of adhesive grooves are formed at positions deviating from a first straight line passing through the reference point and parallel to the optical axis and deviating from a second straight line passing through the reference point and orthogonal to the first straight line. The lens device according to any one of claims 4 . The lens device according to any one of claims 1 to 5, wherein the plurality of adhesive grooves are formed at positions line-symmetrical with respect to a virtual line passing through the reference point. The lens device according to any one of claims 1 to 5, wherein the plurality of adhesive grooves are formed at positions symmetrical with respect to the reference point. The lens device according to any one of claims 1 to 7, wherein the plurality of adhesive grooves are formed at positions at equal intervals in the circumferential direction. The lens device according to any one of claims 1 to 8, wherein at least one of the adhesive grooves is located on the opposite side of the virtual line passing through the reference point. The lens device according to any one of claims 1 to 9, wherein the plurality of adhesive grooves are formed in a shape extending in the radial direction about the reference point. The lens device according to claim 10, wherein the long side of the adhesive groove is located along the frame-side adhesive portion or the holding-side adhesive portion. A reference groove filled with the adhesive is formed at a position including the reference point, and the reference groove is formed.
The lens device according to any one of claims 1 to 11, wherein the reference groove is communicated with the plurality of adhesive grooves. A filling groove is formed by the reference groove and the plurality of adhesive grooves, and the filling groove is formed.
The lens device according to claim 12, wherein the filling groove is formed in a cross shape. The lens device according to any one of claims 1 to 13, wherein the opening direction of the adhesive groove is orthogonal to the optical axis direction. The region where the plurality of adhesive grooves are formed is formed as an adhesive region.
The lens device according to any one of claims 1 to 14, wherein a plurality of the adhesive regions are formed apart from each other in the direction around the optical axis. The frame holder has a first housing and a second housing in which the frame holders are arranged in the optical axis direction.
The lens device according to any one of claims 1 to 15, wherein a part of the lens frame is pressed by the first housing and the second housing from both sides in the optical axis direction. The lens device according to claim 16, wherein the holding side adhesive portion is provided in each of the first housing and the second housing. The lens device according to claim 16 or 17 , wherein the lens frame is fixed to the frame holder in a state where the first housing and the second housing are fastened to each other. The lens device according to any one of claims 1 to 18, wherein the lens frame is fixed to the frame holder in a state where the inclination with respect to the frame holder is adjusted by an eccentric pin. It is equipped with a lens device that captures an optical image and an image sensor that converts the captured optical image into an electrical signal.
The lens device is
A lens frame that has an adhesive part on the frame side and holds the lens,
It has a holding-side adhesive portion, and includes a frame-holding body in which the lens frame is held by adhering the frame-side adhesive portion and the holding-side adhesive portion with an adhesive.
Three or more adhesive grooves filled with the adhesive are formed.
An image pickup device in which the plurality of adhesive grooves are separated in the circumferential direction with respect to a predetermined reference point.

Images