JP2000354584A - Image pickup device for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image pickup device for an endoscope that reduces assembly time and allows the eccentricity of an image pickup element to be adjusted well by simplifying an arrangement by which the image pickup element is pressed and fixed to the abutting surface of a housing, and also simplifying an arrangement by which a protective member (reinforcing plate) is fixed to the housing. SOLUTION: A retaining ring 48 is fitted into a flexible board 47 having mounted therein a CCD 31 whose eccentricity is adjustable, and a snap fit 52 is attached to a reinforcing plate 49 via a rubber ring 51. Under this condition, the snap fit 52 is pushed into a housing 42 so that a locking pawl 54 at the end of the projection 53 of the snap fit 52 mates with a locking hole 55 in the housing 42 to enable the reinforcing plate 49 to be locked to the housing 42 and to enable the CCD 31 to surely abut against the abutting surface 42a of the housing 42 via the reinforcing plate 49, the retaining ring 48 and a pedestal 43.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope image pickup apparatus for picking up an optical image of an endoscope with a built-in image pickup device.

[0002]

2. Description of the Related Art In recent years, when an optical endoscope that optically transmits an optical image to a hand side by a relay lens or the like is used, an optical image obtained by the endoscope is displayed on a monitor or recorded. An endoscope imaging device that captures this optical image and converts it into an electrical signal is widely used for storage in an apparatus.

Such an endoscope imaging apparatus includes an imaging lens for forming an optical image from an eyepiece of an endoscope, and an imaging lens for forming an optical image formed by the imaging lens. An image pickup device such as a CCD is provided, and the position of the image forming lens and the image pickup device is aligned with the distance in the optical axis direction between the image pickup device and the image forming lens in order to obtain a good optical image. Focus adjustment), alignment of the image sensor and the imaging lens in the eccentric direction (eccentricity adjustment) and the like are required. For example, as shown in FIG. 12, the endoscope imaging apparatus 100 includes an imaging lens unit 113 that forms an optical image transmitted from an eyepiece 110 a of an endoscope 110 on an imaging surface 112 of an imaging element 111. The focus adjustment is performed by fixing the image pickup unit 115 having the image pickup element 111 therein relative to the imaging lens unit 113 in the optical axis direction with respect to the image forming lens unit 113. This focus adjustment is performed by, for example, the imaging device 11.
Screw 11 screwed into housing 116 housing 1
7 is relatively moved in the optical axis direction through a through hole 118 formed in the main body frame 114. The eccentricity adjustment is performed by adjusting the fixing position of the image sensor 111 in the radial direction with respect to the housing 116 using, for example, an adjustment screw 119. FIG.
In the figure, the moving part is drawn shifted in the upper and lower cross sections.

The image pickup unit 115 is, for example, shown in FIG.
As shown in the figure, the main body frame 114 is installed so as to be slidable in the optical axis direction. The imaging element 111 includes a pedestal 121
Is mounted (mounted) on a flexible substrate (hereinafter, referred to as a flexible substrate) 123 so as to sandwich the same, and is housed from behind the opening of the housing 116, and a screw 125 is screwed into the housing 116 with a flange-shaped ring 124. Thus, the front surface of the image sensor 111 is pressed and fixed to the abutment surface 126 of the housing 116.

[0005] The image pickup element 111 is provided with
26 is securely pressed and fixed without forming a gap, thereby preventing dust from entering the imaging surface 112 of the imaging element 111. Further, the eccentricity of the image sensor 111 is adjusted by tightening or loosening a plurality of the adjustment screws 119 screwed from the outer periphery of the housing 116, and the image pickup unit 1 is controlled so as to minimize image displacement.
15.

On the other hand, the flexible board 123 extending rearward from the image pickup device 111 has a central portion 128 on which an electronic component 127 forming an image pickup device driving circuit is mounted, and a reinforcing plate 129 further adhered to the central portion 128. The reinforcing plate 129 is sandwiched between a first holding ring 133 and a second holding ring 134 having a substantially cylindrical shape, which is constituted by a surface portion 131 and a terminal portion 132 formed of only a signal line and accommodated in a folded state. , And is urged forward by a coil spring 135 to be fixed.

In general, when the focus is adjusted by moving the imaging unit 115 along the optical axis, the load applied to the relative moving portion as in the above-described configuration is applied to the flexible substrate 12.
3 is absorbed by the expansion and contraction of the end portion 132 of the imaging device 11.
Flexible substrate 123 from 1 to the reinforcing plate 129
Of the image sensor 111 and the mounting part (solder part) of the electronic component 127 is prevented from being loaded.

[0008]

However, in the above configuration, the housing 116 on the front surface of the image sensor 111 is not provided.
Since the contact with the screw 125 is performed by narrowing the screw 125, the amount of pressing force is determined by the tightening torque of the screw 125, and assembling is complicated.
The amount of the pressing force varies, and the adjusting screw 119
It is difficult to satisfactorily adjust the eccentricity of the image sensor 111 due to the above. Further, the fixing structure of the reinforcing plate 129 as a protection member that forms a boundary between the central portion 128, which is a fixed area of the flexible substrate 123, and the terminal portion 132, which is a movable area, is complicated and difficult to assemble.

The present invention has been made in view of these circumstances, and simplifies the configuration for pressing and fixing an image pickup device to an abutting surface of a housing, and also provides a protective member (reinforcing plate).
An object of the present invention is to provide an imaging apparatus for an endoscope which simplifies a structure for fixing an image pickup device to the housing, shortens an assembling time, and can satisfactorily adjust eccentricity of an image pickup device.

[0010]

In order to achieve the above object, an endoscope imaging apparatus according to the present invention is provided with an imaging element, and a movable area that is deformed as the imaging element moves in the optical axis direction; A flexible substrate having a fixed area that does not deform, a boundary between the fixed area and the movable area, a holding member having a locking portion, and a housing for storing the imaging device, and a locking portion of the holding member. A housing having a corresponding locking portion capable of locking the holding member, biasing means for biasing the imaging element against the abutting surface of the housing, and a radius of the imaging element housed in the housing Position adjusting means for adjusting a fixed position in the direction with respect to the housing. With this configuration, the configuration in which the image sensor is pressed and fixed to the abutting surface of the housing is simplified, and the configuration in which the protection member (reinforcement plate) is fixed to the housing is simplified, so that the assembling time is reduced and the imaging is performed. An imaging device for an endoscope which can perform eccentricity adjustment of an element satisfactorily is realized.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. (First Embodiment) FIGS. 1 to 9 relate to a first embodiment of the present invention, and FIG. 1 shows an endoscope apparatus provided with an endoscope imaging apparatus according to the first embodiment. FIG. 2 is an external view illustrating the overall configuration, FIG. 2 is a cross-sectional view illustrating an endoscope imaging apparatus according to the first embodiment, FIG. 3 is a cross-sectional view illustrating an imaging unit of FIG. 2, and FIG. 5 is a sectional view taken along line AA of FIG. 3, FIG. 6 is a perspective exploded perspective view of main components of the image pickup unit of FIG. 3, and FIG. 7 is a modification of the image pickup unit of the first embodiment. FIG. 8 and FIG. 9 are perspective views showing an example, and FIG. 8 and FIG. 9 are explanatory views showing modified examples of the locking portion in the imaging unit of the first embodiment. FIG. 8 shows a reinforcing plate and a snap fit having locking claws. And FIG. 9 is a cross-sectional view showing a modification of the imaging unit in which locking claws are provided on the housing. A. In FIG. 2, the moving part is depicted as being shifted in the upper and lower cross sections.

As shown in FIG. 1, an endoscope apparatus 1 according to a first embodiment comprises, for example, a rigid endoscope (hereinafter simply referred to as an endoscope) 2 having an elongated and rigid insertion portion 11, and an endoscope 2 having the same. A television camera 3 as an endoscope imaging device detachably mounted on the endoscope 2; and a light source device 4 for supplying illumination light to the endoscope 2.
A camera control unit (abbreviated as CCU) 5 for performing signal processing on the television camera 3, and a monitor 6 for displaying a video signal output from the CCU 5.
It is composed of

The endoscope 2 has an elongated and rigid insertion portion 11.
And a large-diameter grip portion 1 connected to the rear end of the insertion portion 11.
2 and an eyepiece 13 formed at the rear end of the grip 12
A light guide cable 15 is connected to the base, and a connector 16 provided at an end of the light guide cable 15 is detachably attached to the light source device 4. Can be connected. By connecting the connector 16 of the light guide cable 15 to the light source device 4, white light from a lamp (not shown) in the light source device 4 is irradiated on the end face of the light guide, and the illumination light transmitted by this light guide is The light is supplied to a light guide in the endoscope 2 and is emitted forward from an illumination window at the distal end of the insertion section 11 to illuminate the subject. With the illumination light emitted from the illumination window, an optical image of the illuminated subject is formed by an objective lens (not shown) provided at the tip, and the formed image is formed by an eyepiece 13 by a relay optical system.
Side to be magnified through an eyepiece.

The eyepiece 13 is provided with the TV camera 3
Is detachably attached. The television camera 3 has a solid-state image sensor (hereinafter, abbreviated as CCD) as an image sensor.
The CCD is connected to the CCU 5 via a connector 10 which is detachable from the CCU 5 by a signal cable 9 (internal signal line) extending from the television camera 3.
The signal cable 9 is a CCD (not shown) in the CCU 5.
A CCD drive signal from the driver is transmitted to the CCD 31
, A signal photoelectrically converted by the CCD 31 is read out, a video signal is generated by a video signal generation circuit (not shown) inside the CCU 5, and an image is displayed on the display surface of the monitor 6.

As shown in FIG. 2, a television camera 3 as an imaging device for an endoscope according to the present invention has a camera head 3a having a watertight structure inside, and a watertightness at the rear end of the camera head 3a. And a cable portion 9b composed of a signal line. The camera head 3a
Has a connecting portion 21 detachably attached to the eyepiece 13 of the endoscope 2 and is connected to a first exterior member 22. The first exterior member 22 includes a second exterior member 23
Is connected to the signal cable 9. The first exterior member 22 and the second exterior member 23 are connected via a connection member 24, and are provided with an annular elastic member 25 in pressure contact to form a watertight structure to secure watertightness in the television camera 3. are doing.

An imaging lens unit 3 for forming an optical image from the endoscope 2 is provided inside the first exterior member 22.
Reference numeral 0 is provided from the connection portion 21 along the optical axis of the CCD 31 and is fixed to the main body frame 32 with screws or the like. On the rear side of the imaging lens unit 30, an imaging unit 33 having a built-in CCD 31 for capturing an optical image from the imaging lens unit 30 is fixed slidably on the inner peripheral surface of a main body frame 32 in the optical axis direction. ing. A frame 35 is joined to the rear end of the main frame 32 so as to cover the rear of the imaging unit 33. A shield frame 38 having a glass body 37 provided with a connector 36 at the center is joined to the rear end side of the frame body 35. This shield frame 3
8 Inside the rear end side, the contact pins 37 of the glass body 37
A total shield 39 connected to a signal line 39a connected to a is fixed with screws or the like.

Next, the imaging unit 33 according to the present embodiment will be described with reference to FIG. The image pickup unit 33 is fixed to the inner peripheral surface of the main body frame 32 so as to be slidable in the optical axis direction, and includes a filter unit 41 having various optical filters.
And a housing 42 in which the CCD 31 is pressed and fixed to the abutting surface 42a, and the CCD 42 is housed from the rear of the opening of the housing 42 so as to sandwich the pedestal 43.
31 is assembled (mounted), and a central part 45 which is a fixed area on which electronic components 44 forming an image sensor driving circuit are mounted, and a terminal part which is formed only of signal lines and is a movable area which is accommodated in a folded state. 46, a press ring 48 as a substantially cylindrical urging ring that can be fitted into the housing 42 and inserts the flexible board 47 therein, and is fixed to the rear end of the housing 42. And a reinforcing plate 49 as a holding member that forms a boundary between the central portion 45 of the flexible substrate 47 and the terminal end portion 46.

In this embodiment, the structure for pressing and fixing the CCD 31 to the abutting surface 42a of the housing 42 is simplified, and the structure for fixing the reinforcing plate 49 as a protection member to the housing 42 is simplified. It is configured as follows.

As shown in FIG. 4, the press ring 48 is fitted to the inner periphery of the housing 42 so as to surround the periphery of the flexible substrate 47 in a state where the central portion 45 is folded in a U-shape. I have. The front end face of the press ring 48 is in contact with the rear end face of the pedestal 43, and the rear end face is in contact with the reinforcing plate 49. This reinforcing plate 4
A surface portion 50 of the flexible substrate 47 is adhered to 9, and a rubber ring 51 as an elastically deformable elastic member having elasticity is abutted behind the A surface portion 50. Behind the rubber ring 51, a snap fit 52 as a locking ring having a locking portion described below for locking the reinforcing plate 49 to the housing 42 is provided.
It comes to be installed in a form to contact with. The snap fit 52 is formed with, for example, three projecting portions 53 which can be elastically deformed in the radial direction as locking portions, and locking claws 54 are formed at the ends thereof.

On the inner peripheral surface of the housing 42, a locking hole 55 as a locking portion corresponding to the locking claw 54 is formed. In addition, these locking parts are provided with the projection 53 having a locking claw 54 formed at the tip thereof on the housing 42, and a locking hole 55 corresponding to the locking claw 54 formed in the snap fit 52. Is also good.

Behind the reinforcing plate 49, the terminal portion 46 having only the signal line of the flexible board 47 is electrically connected to and fixed to a flexible connector (not shown) in a state of being bent in a wave shape. Also, as shown in FIG.
Adjustment screws 56 as position adjustment means for adjusting the fixed position of the image sensor 31 in the radial direction with respect to the housing 42 are installed at four points on the outer periphery of D31, and these adjustment screws 56 are tightened or loosened. By the said CCD
The eccentricity adjustment of 31 is performed.

The assembling of the imaging unit 33 constructed as described above is performed by the CCD 31 and the reinforcing plate 49 as shown in FIG.
Are mounted and bonded to the flexible substrate 47, respectively.
Pressing ring 48 is inserted from the radial direction, and rubber ring 5
The snap fit 52 is attached to the reinforcing plate 49 via 1. Then, the units in this state are collectively pushed into the housing 42. As a result, the locking claws 54 of the snap fit 52 and the locking holes 55 of the housing 42 are engaged and locked. At this time, snap fit 52
Since the rubber ring 51 closely contacting both surfaces of the elastic member 49 and the reinforcing plate 49 is elastically deformed, this elastic force urges the snap fit 52 backward, thereby suppressing the rattling of the snap fit 52 and the reinforcing plate. 49, presser ring 4
8, since the CCD 31 is urged forward through the pedestal 43, the CCD 31 is pressed against the abutting surface 42a of the housing 42.
Can be reliably contacted.

The eccentricity of the CCD 31 is adjusted by tightening or loosening adjustment screws 56 provided at four points on the outer periphery of the housing 42.
Since the amount of pressing force of the housing 42 against the abutting surface 42a is at the level of the elastic force of the rubber ring 51, the amount of force necessary for the eccentricity adjustment is appropriate, and the eccentricity adjustment can be performed easily and reliably. Further, in the flexible substrate 47, when the imaging unit 33 moves along the optical axis, the terminal portion 46 for absorbing the load applied to the relative moving portion and the fixed portion CC.
The central part 45 on which the D31 and the electronic component 44 are mounted can be configured by forming a boundary with the reinforcing plate 49.

Further, as shown in FIG.
Implement the variable resistor 60 to adjust the video signal,
Adjustments of other electric drive components not shown can also be made. The electronic components to be mounted are not limited to the variable resistors, and may be electronic components such as a dip switch, an electronic volume, and a ROM. In this case, since the reinforcing plate 49 is fixed, adjustment and replacement can be performed easily and reliably.
The elastic effect of the rubber ring 51 can be replaced by a coil spring or a leaf spring.

Further, as shown in FIG. 8, a reinforcing plate 49 and a snap fit 52 having a locking claw 54 may be made into one part, and as shown in FIG. May be provided.

According to the television camera 3 as the endoscope imaging apparatus of the present embodiment described above, the following effects can be obtained.・ Since the assembling is easy, the assembling time can be reduced. Since the CCD 31 is securely pressed against the abutting surface 42a of the housing 42, there is no gap between the abutting surfaces 42a, and it is possible to prevent dust from entering the imaging surface. The amount of force pressing the CCD 31 against the housing 42 is
Since it is moderate, the eccentricity adjustment of the CCD 31 can be easily and reliably performed. -Since the end portion 46 which is a movable area of the flexible substrate 47 and the central portion 45 which is a fixed area can be reliably separated,
It is possible to reliably prevent a load from being applied to the electronic component 44 provided in the central portion 45 and the solder portion of the CCD 31.

In the endoscope apparatus 1 according to the present embodiment, the imaging device for an endoscope of the present invention is detachably attached to an eyepiece of a rigid endoscope having an elongated and rigid insertion portion. It is configured such that an optical image of a subject from an endoscope eyepiece is taken by an image pickup device having a built-in device, and an image pickup signal of the image pickup device is processed by the CCU 5 to display an image on a monitor. The present invention is not limited to this, and the endoscope imaging device of the present invention may be configured to be detachably attached to an eyepiece of a flexible endoscope having an elongated and flexible insertion portion.

The present invention is not limited to only the above-described embodiments, but can be variously modified without departing from the gist of the invention.

(Second Embodiment) FIGS. 10 and 11 relate to a second embodiment of the present invention, and FIG. 10 is a sectional view showing the configuration of an image pickup unit according to the second embodiment. FIG. 9 is an explanatory diagram showing a modification of the urging means in the imaging unit according to the second embodiment.

The imaging unit 70 according to the second embodiment has
Snap fit 52 having reinforcing plate 49 and locking claw 54
Are made into one part, and the elastic ring 51 is not used as the urging means. Other configurations are the same as those in FIG.
The description is given with the same reference numerals.

As shown in FIG. 10, the reinforcing plate 49 and the locking claw 5
The cap 71 that has the snap fit 52 having 4 as one component has three locking claws 54, and the locking claw 54 is provided when locked in the locking hole 55 of the housing 42. The projection 53 is locked by a tapered surface 54a.

As described above, the locking claw 54 is
, The rattle of the cap 71 is prevented, and the locking claw 54 and the cap 71 are urged forward in the optical axis direction. The CCD 31 can be pressed and fixed to the abutting surface 42a of the housing 42.

Further, as shown in FIG.
As a biasing means for biasing the pressing member 1 against the abutting surface 42a of the housing 42, a similar effect can be obtained even if the cap 71 has a structure in which a leaf spring-like elastic portion 72 is formed at a portion in contact with the pressing ring 48. it can.

The urging means for urging the CCD 31 against the abutting surface 42a of the housing 42 includes a pressing ring 4
8 may be provided with the above-described leaf spring-shaped elastic portion 72,
The holding ring 48 may be changed to a coil spring. Also,
The shape, number, locking position, combination, and the like of the locking claws 54 are not limited to only the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.

[Supplementary Note] (Supplementary Note 1) A flexible substrate having a movable area on which an image sensor is mounted and which is deformed as the image sensor is moved in the optical axis direction and a fixed area which is not deformed, A holding member that forms a boundary with the movable area and has a locking portion, and a locking portion that accommodates the imaging element and that corresponds to the locking portion of the holding member and locks the holding member. A possible housing, biasing means for biasing the image sensor against the abutting surface of the housing, and position adjustment for adjusting a radially fixed position of the image sensor housed in the housing with respect to the housing. Means for imaging an endoscope.

(Supplementary Note 2) The supplementary member is characterized in that the holding member comprises a flat plate attached to the substrate and a locking ring having a locking portion corresponding to the locking portion of the housing. Item 2. An imaging device for an endoscope according to Item 1.

(Additional Item 3) The additional member according to the additional item 1, wherein the holding member is formed of a locking cap which is attached to the substrate and has a locking portion corresponding to a locking portion of the housing. Endoscope imaging device.

(Supplementary Note 4) The holding member attached to the substrate is mounted with any one of an adjusting unit, a switch unit, and a storage unit capable of changing an electric signal, or a combination thereof. 3. The imaging device for an endoscope according to claim 1, wherein:

(Supplementary Note 5) The locking portion is interposed between the image pickup device and the flat plate, and together with the image pickup device,
A substantially cylindrical biasing ring that can be fitted into the housing, and an elastic member that can be elastically deformed, the elastic member being in close contact with the flat plate and the locking ring in an elastically deformed state, The imaging device for an endoscope according to claim 2, further comprising: an elastic member that urges the imaging element to the abutting surface of the housing via the flat plate and the urging ring.

(Additional Item 6) The urging means is interposed between the image pickup device and the holding member, and together with the image pickup device, has a substantially cylindrical urging ring which can be fitted into the housing. An elastically deformable protrusion integrally provided on the holding member, the elastic member being in close contact with the urging ring in an elastically deformed state, and the elasticity of the image pickup device pushing the image pickup device through the urging ring. The imaging device for an endoscope according to claim 3, further comprising a projection for urging the contact surface.

(Additional Item 7) The urging means is interposed between the image pickup device and the holding member, and together with the image pickup device, a substantially cylindrical urging ring which can be fitted into the housing, A deformable elastic member, which is in close contact with the urging ring and the holding member in an elastically deformed state, and the elastic force of the urging ring causes the imaging device to abut against the housing via the urging ring. 4. The endoscope imaging apparatus according to claim 2, further comprising an elastic member for urging the endoscope.

(Supplementary Item 8) The urging means is an elastic member interposed between the image pickup device and the holding member and having elasticity that can be fitted into the housing together with the image pickup device. 4. An endoscope image pickup apparatus according to claim 1, further comprising an elastic member which is in close contact with the holding means in an elastically deformed state, and urges the image pickup element against the abutting surface of the housing by its elastic force. apparatus.

(Supplementary Note 9) The locking portion includes an elastically deformable protrusion provided on one of the housing and the holding member, and a locking claw formed at the tip of the protrusion. The imaging device for an endoscope according to any one of additional items 1 to 3, wherein the imaging device for an endoscope is constituted by a locking hole formed on the other side.

[0044]

As described above, according to the present invention, the assembling time can be shortened, and the image pickup device can be pressed and fixed with an appropriate amount of force by the biasing means. Can be done.

[Brief description of the drawings]

FIG. 1 to FIG. 9 relate to a first embodiment of the present invention, and FIG. 1 illustrates an entire configuration of an endoscope apparatus including an endoscope imaging apparatus according to the first embodiment. FIG.

FIG. 2 is a cross-sectional view illustrating the imaging device for an endoscope according to the first embodiment;

FIG. 3 is a cross-sectional view illustrating the imaging unit in FIG.

FIG. 4 is a sectional view taken along line BB in FIG. 3;

FIG. 5 is a sectional view taken along line AA in FIG. 3;

FIG. 6 is an exploded perspective view of main components of the imaging unit in FIG. 3;

FIG. 7 is an exemplary perspective view showing a modification of the imaging unit according to the first embodiment;

FIGS. 8 and 9 are explanatory views showing modified examples of the locking portion in the image pickup unit according to the first embodiment. FIG. 8 shows a reinforcing plate and a snap fit having locking claws. Sectional drawing which shows the modification of the imaging unit made into components.

FIG. 9 is a cross-sectional view showing a modification of the imaging unit in which a locking claw is provided on a housing.

FIG. 10 and FIG. 11 are related to a second embodiment of the present invention, and FIG. 10 is a cross-sectional view illustrating a configuration of an imaging unit according to the second embodiment.

FIG. 11 is an explanatory diagram showing a modification of the urging means in the imaging unit according to the second embodiment.

FIG. 12 is a cross-sectional view illustrating a conventional endoscope imaging apparatus.

FIG. 13 is a cross-sectional view illustrating the conventional imaging unit in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 2 ... Endoscope (hard endoscope) 3 ... TV camera (Endoscope imaging apparatus) 33, 70 ... Imaging unit 32 ... Body frame 42 ... Housing 42a ... Butt surface 43 ... Pedestal 44 electronic components 45 central part (fixed area) 46 terminal part (movable area) 47 flexible board (flexible board) 48 retaining ring (biasing ring) 49 reinforcing plate (holding member) 51 rubber ring ( Elastic member) 52 snap-fit (locking ring) 53 projecting portion (locking portion) 54 locking claw (locking portion) 55 locking hole (locking portion) 56 adjusting screw 71 cap 72 Elastic part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/18 H04N 7/18 MF term (Reference) 2H040 BA00 CA07 CA11 CA12 CA22 CA28 CA30 DA02 DA32 GA01 4C061 AA00 BB01 CC06 DD00 FF40 LL02 5C022 AA09 AB15 AB46 AC42 AC70 AC78 5C054 AA01 CA04 CC07 CD03 CE04 EA01 FF02 HA12 HA19

Claims (1)

[Claims] 1. A flexible substrate having an image sensor mounted thereon and having a movable area that deforms as the image sensor moves in the optical axis direction and a fixed area that does not deform, a boundary between the fixed area and the movable area. A holding member having a locking portion, a housing capable of storing the imaging element and having a locking portion corresponding to the locking portion of the holding member and locking the holding member, Biasing means for biasing the image sensor against the abutting surface of the housing; andposition adjusting means for adjusting a fixed position in a radial direction of the image sensor housed in the housing with respect to the housing. An imaging device for an endoscope, comprising: