JP2014235255A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of improving the workability of adhesion work for fixing the position of an imaging element, after tilt adjustment, when performing the tilt adjustment of the imaging element in such a posture that the optical axis of an imaging optical system is horizontal.SOLUTION: The imaging apparatus includes an imaging element 3 imaging the image of an object formed by a lens barrel 1, adhesion parts 2h and 2i for adjusting the inclination of the imaging element 3, with respect to an optical axis, first and second application surfaces fixing the imaging element 3 whose inclination is adjusted by the adhesion parts 2h and 2i, and first and second application surfaces which are provided to the adhesion parts 2h and 2i respectively and to which an adhesive is applied. The adhesion part 2i is provided closer to an object side than the imaging element 3 in an optical axis direction and the adhesion part 2h is provided closer to the side opposite to the object than the imaging element 3 in the optical axis direction. Both of the first and second application surfaces face to the same direction perpendicular to the optical axis.

Description

  The present invention relates to an image sensor mounting mechanism provided in an imaging apparatus.

  In an imaging apparatus such as a digital camera, an object image formed by an optical system included in a lens barrel or the like is converted into an electrical signal by an imaging element such as a CMOS sensor. In this imaging apparatus, the converted electrical signal is transmitted to the main body on which the image processing IC and the image processing CPU are mounted.

  Here, in an optical system included in a lens barrel or the like, a lens or a lens holding member is tilted or misaligned due to a manufacturing error. Therefore, the imaging surface of the optical system is not aligned with the optical axis of the optical system. May tilt. In addition, an imaging element such as a CMOS sensor also has an inclination with respect to the optical axis on the imaging surface due to manufacturing errors.

  Therefore, depending on the combination of the tilt of the imaging plane of the optical system and the tilt of the image pickup surface of the image sensor, the center of the image photographed by the image pickup device and the peripheral portion of this image may differ from the design value of the focal length. The amount of deviation may be different. For this reason, even when focusing is performed at the center of the image, a focus shift remains in the peripheral portion of the image, and the peripheral portion is blurred.

  Further, the amount of shift in the focal length of the peripheral portion of the image may become strongly asymmetric with respect to the center of the image. As the asymmetry becomes stronger, the blur of the image becomes more conspicuous in the peripheral portion of the image, and a state called a one-side blur is obtained.

  Therefore, conventionally, by adjusting the tilt of the image sensor relative to the optical axis of the optical system in the pitch direction and the yaw direction, the tilt of the image plane of the optical system and the tilt of the image plane of the image sensor are aligned. Has been proposed.

  Patent Document 1 discloses an image pickup apparatus provided with a lens barrel, an image pickup element, and a holding plate to which the image pickup element is attached. This imaging device has a configuration in which the holding plate is screwed to the lens barrel at three positions in a state where the elastic member is disposed between the lens barrel and the holding plate. The inclination of the image sensor is adjusted.

  In this imaging apparatus, an urging force that urges the holding plate in a direction away from the lens barrel is generated by an elastic member sandwiched between the lens barrel and the holding plate. By this urging force, the holding plate moves by a minute amount in the direction away from the lens barrel at the position where the screw is loosened.

  Therefore, it is possible to tilt the holding plate with respect to the lens barrel in the pan direction and the tilt direction by adjusting the screw tightening amount at three locations, and the inclination of the imaging surface of the image sensor integrated with the holding plate can be adjusted. It becomes possible to adjust.

  Here, in general, when performing tilt adjustment of the image sensor provided in the imaging device, the lens barrel is fixed to the adjustment tool, and an evaluation chart arranged at a design interval away from the imaging device, Shoot with this imaging device. Then, the screw tightening amount is adjusted while checking the resolution and contrast values at the four corners of the periphery of the photographed image of the photographed evaluation chart.

  In addition, as a method of fixing the position of the image pickup element after adjusting the tilt of the image pickup element, a method of fixing the lens barrel and the holding plate by applying an adhesive to the outer peripheral portion of the holding plate, or an adhesive on the screw itself. A method of applying and fixing a holding plate and a screw is known.

JP 2012-138664 A

  When the tilt adjustment operation of the imaging apparatus is performed, there is a case where the optical axis of the lens barrel of the imaging apparatus is horizontal, or an attitude where the optical axis of the lens barrel is vertical.

  However, when the adjustment is performed when the optical axis of the imaging device is vertical, in order to separate the lens barrel from the evaluation chart by the design interval, not only the lens barrel but also the evaluation tool It was also necessary to attach a chart. In addition, when the field angle range of the lens barrel is wide, the evaluation chart used for the tilt adjustment work is required to have a size that covers this field angle range. Increase in size.

  For this reason, when the field angle range of the lens barrel is wide, the optical axis of the image pickup device is in a vertical posture, and adjustment will increase the size of the adjustment tool. Because of the simplicity of the structure, this optical axis is in a horizontal posture, and it was desirable to perform adjustment.

  However, when this optical axis is horizontal and adjustment is performed, the adhesive is applied to the outer periphery of the holding plate and the adhesive is applied to the screw itself. There was a problem that the adhesive dropped before the resin hardened and the workability was poor.

  The present invention has been made in view of the above points. That is, when performing tilt adjustment of the image sensor in a posture in which the optical axis of the image pickup optical system is horizontal, imaging that can improve the workability of the bonding work for fixing the position of the image sensor after the tilt adjustment A device is provided.

  In order to achieve the above object, an imaging apparatus according to the present invention includes a lens barrel including an imaging optical system, an imaging element that captures an image of a subject formed by the imaging optical system, and light from the imaging optical system. An adjustment unit that adjusts the tilt of the image sensor with respect to an axis, and an upper adhesive portion that is provided above the lens barrel, and the image sensor whose tilt is adjusted by the adjustment unit is attached to the lens barrel. In order to fix, the upper adhesive part to which the adhesive is applied, and the lower adhesive part provided below the lens barrel, the imaging element whose inclination is adjusted by the adjustment part is attached to the lens barrel. An imaging device including a lower adhesive portion to which an adhesive is applied for fixing, wherein the upper adhesive portion is provided closer to the subject than the imaging element in the optical axis direction of the imaging optical system. The lower adhesive portion is an optical axis direction of the imaging optical system. Than said imaging device and an object provided on the opposite side, the coated surface of each of the adhesive of the upper bonding portion and the lower bonding portion is applied together, characterized in that is upward in.

  According to the present invention, when the tilt adjustment of the image pickup element is performed in a posture in which the optical axis of the image pickup optical system is horizontal, the workability of the bonding work for fixing the position of the image pickup element after the tilt adjustment is improved. An imaging device that can be provided can be provided.

It is a perspective view of the lens holder in the embodiment of the present invention. It is sectional drawing of the imaging device in embodiment of this invention. It is a disassembled perspective view of the imaging device in the embodiment of the present invention. It is a perspective view of the imaging unit in the embodiment of the present invention. It is sectional drawing of the adhesion part periphery of the lens holder in embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 2 is a cross-sectional view of the imaging apparatus in the present embodiment. FIG. 3 is an exploded perspective view of the imaging apparatus according to the present embodiment.

  As shown in FIGS. 2 and 3, in the imaging device according to the present embodiment, the lens barrel 1 is attached to the lens holder 2 from the subject direction in use (the subject side photographed by the imaging device). In addition, the optical element 7, the sensor rubber 8, and the imaging element unit 6 are attached to the lens holder 2 in this order from the direction facing the subject (subject side). Here, the imaging element unit 6 is held in the lens holder 2 by three screws 9.

  Here, the image sensor unit 6 will be described in detail with reference to FIG. FIG. 4 is a perspective view for explaining the configuration of the image sensor unit 6 in the present embodiment. Here, FIG. 4A is a perspective view of the image sensor unit 6 viewed from the subject side (viewed from the image sensor 3 side). FIG. 4B is a perspective view of the image sensor unit 6 viewed from the side opposite to the subject (viewed from the image sensor substrate 4 side).

  In FIG. 4, the image sensor 3, the image sensor substrate 4 and the holding plate 5 constitute an image sensor unit 6. The image sensor 3 is fixed by being bonded to the holding plate 5. Further, the image pickup device 3 is mounted on the image pickup device substrate 4 by soldering a terminal 3 a provided on the image pickup device 3. Note that the image sensor substrate 4 in the present embodiment corresponds to a holding member that holds the image sensor 3.

  As shown in FIG. 4 (a), the holding plate 5 has a positioning hole 5a for the lens holder 2, a steady stop groove 5b, three through holes 5c for inserting the screws 9, and a work hole 5d. And a working hole 5e. One of the terminals 3a is inserted into the work hole 5d, and the other of the terminals 3a is inserted into the work hole 5e. The terminal 3a is mounted on the image pickup device substrate 4 in a state of being inserted into the work hole 5d and the work hole 5e.

  That is, the work hole 5d and the work hole 5e are for the work of soldering the terminal 3a to the image pickup device substrate 4, and are holes formed around the terminal 3a so as not to interfere with the terminal 3a. . Here, the positioning hole 5a, the steadying groove 5b, and the through hole 5c are disposed outside the working holes 5d and 5e. This is because it is necessary for this soldering operation.

  Further, one of the three through holes 5c and the positioning hole 5a are arranged on a straight line passing through the optical axis of the lens on the plane orthogonal to the optical axis of the lens included in the lens barrel 1, and It is desirable to arrange them so as to be symmetrical with respect to the optical axis. This is to reduce the displacement of the center of the imaging surface of the imaging device 3 from the optical axis of the lens due to the tilt of the holding plate 5 during tilt adjustment.

  Further, in order to equalize the amount of change in the inclination of the holding plate 5 with respect to the three screw tightening amounts, two of the three through holes 5c are arranged with respect to a straight line passing through the optical axis of the lens included in the lens barrel 1. It is desirable that the distances from the optical axes of the three through holes 5c be the same by arranging them symmetrically.

  The straight line passing through the optical axis of this lens is a straight line indicated by a one-dot chain line in FIG.

  As shown in FIG. 4B, the image pickup device substrate 4 has electronic components mounted thereon, and transmits image information converted into electrical signals and power supply from the connector 4a to a flexible printed circuit board or a thin coaxial cable. Through the main body side of the imaging device.

  The imaging element unit 6 is fixed to the lens holder 2 by screwing the holding plate 5 to the lens holder 2 with screws 9. For this reason, the image pickup device substrate 4 is provided with notches 4b, 4c, and 4d cut out so that the image pickup device substrate 4 and the screw 9 do not interfere with each other in order to provide a space for screw tightening by the screw 9. ing.

  Here, it returns to description using FIG. 2 and FIG. 3 again. 2 and 3, the lens barrel 1 is configured by sequentially inserting a lens and a spacer from openings 15a and 15b at both ends of the lens barrel 15, and fixing both ends with a presser ring.

  At both ends of the lens barrel 15, openings 15a and 15b are provided. Further, the lens 10, the spacer 17, and the lens 11 are inserted into the lens barrel 15 from the opening 15a. Thereby, the lens barrel 15 is attached in the order of the lens 10, the spacer 17, and the lens 11 from the opening 15a. The presser ring 16 is screwed and fixed to the end of the lens barrel 15 on the opening 15a side.

  Further, the lens 12, the spacer 19, the lens 13, the spacer 20, and the lens 14 are inserted and attached to the lens barrel 15 in this order from the opening 15 b. The lens 12, the spacer 19, the lens 13, the spacer 20, and the lens 14 are fixed by screwing a presser ring 21 into an end portion on the opening 15 b side of the lens barrel 15.

  Thus, the lens barrel 1 is configured such that the lens 10, the lens 11, the lens 12, the lens 13, the spacer 18, the spacer 19, and the spacer 20 are fitted to the lens barrel 15 that is one component. Thereby, the lens barrel 1 can suppress the amount of eccentricity of each lens with respect to the optical axis of the imaging optical system of the lens barrel 1 as compared with a lens barrel constituted by a plurality of barrels.

  Next, attachment of components to the lens holder 2 will be described. The lens barrel 1 is inserted into the cylindrical portion of the lens holder 2. By this insertion, the outer diameter 15 c of the lens barrel 15 is fitted into the inner diameter 2 a of the lens holder 2. The lens barrel 1 is supported by the lens holder 2 so as to be movable in the optical axis direction of the imaging optical system of the lens barrel 1 until it is fixed after optical adjustment.

  The optical element 7 is an optical component such as a low-pass filter or an infrared cut filter, and is inserted into the filter insertion portion 2 b of the lens holder 2. The sensor rubber 8 is an elastic member, and is formed with a sensor outer peripheral portion 8a and a cylindrical portion 8b. After the optical element 7 is inserted into the lens holder 2, the sensor outer peripheral portion 8 a is inserted into the rubber insertion portion 2 c of the lens holder 2, and the cylinder portion 8 b is inserted into the rubber insertion hole 2 d of the lens holder 2. .

  In the image sensor unit 6, after the sensor rubber 8 is inserted into the lens holder 2, the positioning pin 2e of the lens holder 2 is inserted into the positioning hole 5a of the holding plate 5, and the positioning pin 2f of the lens holder 2 is inserted into the anti-sway groove 5b. By being inserted, it is positioned in the direction perpendicular to the optical axis.

  The three screws 9 are inserted into the three through holes 5 c, and the three screws 9 inserted are tightened into the three screw holes 2 g of the lens holder 2, whereby the holding plate 5 is fixed to the lens holder 2. . Then, the image sensor unit 6 is fixed to the lens holder 2 by fixing the holding plate 5 to the lens holder 2.

  When the holding plate 5 is fixed with the screw 9, the sensor outer peripheral portion 8 a of the sensor rubber 8 contacts the optical element 7. Further, when the holding plate 5 is fixed with the screw 9, the cylindrical portion 8 b is crushed in the optical axis direction between the rubber insertion hole 2 d of the lens holder 2 and the holding plate 5. By being crushed in this way, the cylindrical portion 8b generates an urging force in the optical axis direction with respect to the optical element 7 and the holding plate 5.

  This urging force is generated in the direction in which the optical element 7 is pressed against the lens holder 2, and is generated in the direction in which the imaging element unit 7 is separated from the lens holder 2 with respect to the holding plate 5.

  Next, optical adjustment for the imaging apparatus according to the present embodiment will be described. As described above, the imaging apparatus has tilts and positional deviations of components in the lens barrel due to manufacturing errors, and manufacturing inclinations of the imaging surface of the imaging element. There is a gap.

  Furthermore, as a problem related to the shift of the focal length, the problem of the shift of the focal length when viewed as the whole image and the asymmetry of the shift of the focal length in the peripheral portion with respect to the central portion of the image become strong. There are two problems: a one-sided blur problem with noticeable blurring at the periphery. For these two problems, the image pickup apparatus according to the present embodiment performs optical adjustment. Specifically, as optical adjustment, focus adjustment is mainly performed for a shift in the focal length of the entire image, and tilt adjustment is performed for one blur.

  Here, the attitude of the optical axis of the image pickup apparatus when performing the optical adjustment work and the evaluation chart in this embodiment will be described.

  The optical adjustment work in the present embodiment is performed in a posture in which the optical axis of the imaging apparatus is horizontal. This optical adjustment operation is performed in a state where an evaluation chart is arranged in front of the imaging apparatus. This evaluation chart is arranged at a set distance (predetermined distance) from the imaging device. This optical adjustment operation is performed while confirming the resolution and contrast value from the image of the evaluation chart imaged by the imaging device.

  As an evaluation chart, for example, there are charts in which slit patterns having different readable widths are provided at the center and the periphery in a combination of horizontal and vertical directions (or combinations of meridional and sagittal directions) in accordance with the resolution level. Are known.

  Here, when the captured image of the evaluation chart arranged in front of the imaging device is used for optical adjustment work as in the present embodiment, when the field angle range of the lens barrel is widened, the field angle is increased. Since a size that covers the range is required, the evaluation chart becomes larger.

  Here, in general, the posture of the imaging device at the time of optical adjustment is a posture in which the optical axis of the imaging device is vertical (an orientation in which the optical axis of the imaging device is vertical). However, when the evaluation chart is enlarged as described above, the optical adjustment work is performed in a horizontal posture (imaging device) as in the present embodiment because of the reduced installation space and the simple structure of the adjustment tool. It is desirable that the optical axis be horizontal).

  For example, when the optical axis adjustment work is performed in a horizontal posture, with the evaluation chart standing on the wall, the imaging device being separated from the evaluation chart by a set distance, and the imaging device facing the evaluation chart, Any adjustment tool to which this imaging device can be attached may be used.

  However, when the optical axis adjustment work is performed in a posture where the optical axis of the imaging device is in the vertical direction, not only the imaging device but also the evaluation chart is attached in order to move the evaluation chart away from the imaging device by a set distance. It is necessary to use a tool for adjusting the structure. For this reason, when the evaluation chart is enlarged, the adjustment tool itself is enlarged. For this reason, in this embodiment, it is assumed that the optical adjustment operation is performed in a posture in which the optical axis of the imaging apparatus is horizontal.

  Next, regarding the optical adjustment work performed by the imaging apparatus according to the present embodiment, the focus adjustment work will be described first.

  For example, in the case of an imaging apparatus having a focus mechanism for focusing on a subject, if the deviation of the focal length due to a manufacturing error is within a design-acceptable variation range, the image is captured by autofocus when the imaging apparatus is used. It is possible to focus accurately. Here, the auto focus is a function for adjusting the focal length by driving the focus mechanism.

  However, since the image pickup apparatus of the present embodiment does not have a focus mechanism, in the optical adjustment work in the present embodiment, the distance in the optical axis direction between the lens barrel 1 and the image sensor 3 with respect to individual variations in focal length. It is necessary to adjust the focus by adjusting and fixing for each individual.

  In this focus adjustment, the lens holder 2 is fixed to the adjustment tool so that each component is attached to the lens holder 2 as described above and the optical axis of the imaging device is in a horizontal posture, and an evaluation chart is displayed. Take a picture and read the resolution from the picture taken on the evaluation chart. Here, if the read resolution falls below the standard value, the position of the lens barrel 1 with respect to the lens holder 2 in the optical axis direction of the imaging apparatus is finely adjusted until the resolution falls within the standard value range.

  As described above, the imaging apparatus according to the present embodiment is focused. After the focus adjustment is completed, the lens barrel 15 is fixed to the lens holder 2 by applying an adhesive to the bonding holes 21 provided on the left and right of the cylindrical portion of the lens holder 2.

  In the present embodiment, the method of fixing the lens barrel 15 to the lens holder 2 is not limited to the application of an adhesive. For example, instead of applying an adhesive to an adhesive hole (adhesive portion) or in addition to this application in order to improve holding strength, the tip of the screw 22 is tightened by screwing the screw 22 into the screw hole 2k of the lens holder 2. The lens barrel 15 may be fixed to the lens holder 2 by pressing the lens barrel 15.

  Next, the tilt adjustment work among the optical adjustment works performed by the imaging apparatus according to the present embodiment will be described. As described above, depending on the combination of the tilt of the imaging surface by the optical system due to manufacturing errors and the tilt of the imaging surface of the imaging device, the focal length of the peripheral portion relative to the center portion of the captured image by the imaging device may be reduced. The asymmetry of the deviation may become strong. As a result, a state called one-sided blur in which the blur at the periphery of the captured image is noticeable occurs.

  In this embodiment, the holding plate 5 can be tilted with respect to the lens holder 2 by adjusting the tightening amount of the screw 9 with respect to the lens holder 2 with respect to this one-sided blur. Thereby, the inclination of the image pickup surface of the image pickup element 3 that moves integrally with the holding plate 5 can be aligned with the inclination of the optical system of the image pickup apparatus.

  In the imaging device according to the present embodiment, the three screw holes in the lens holder 2 with the cylindrical portion 8b of the sensor rubber 8 being crushed in the optical axis direction between the rubber insertion hole 2d of the lens holder 2 and the holding plate 5. The holding plate 5 is held by screwing it to 2 g with a screw 9.

  Therefore, a biasing force is acting on the holding plate 5 in a direction away from the lens holder 2 by the cylindrical portion 8b of the sensor rubber 8. Therefore, when the tightening amount of the screw 9 is loosened, the holding plate 5 is moved to the lens holder at that location. 2, the holding plate 5 is inclined with respect to the lens holder 2.

  Therefore, by adjusting the tightening amounts of the three screws 9 respectively, the image pickup surface of the image pickup element 3 integrated with the holding plate 5 as the image pickup element unit 6 is panned with respect to the optical system of the image pickup apparatus. It is possible to tilt in the tilt direction.

  In this way, the contrast value and resolution at the periphery of the image are read from the captured image of the adjustment chart, and the tightening amounts of the three screws 9 are adjusted so that these values are symmetrical with respect to the image center. And by this adjustment, the inclination of the imaging surface of the imaging optical system of the imaging device and the inclination of the imaging surface of the imaging device can be made uniform.

  That is, in this embodiment, the lens holder 2, the holding plate 5, the sensor rubber 8, and the three screws 9 adjust the inclination of the imaging surface of the imaging device 3 with respect to the imaging optical system included in the lens barrel 1. To act as an adjustment unit.

  As described above, in the imaging apparatus according to the present embodiment, two optical adjustment operations, focus adjustment and tilt adjustment, can be performed.

  Next, with reference to FIG. 1 and FIG. 5, the adhesion part of the lens holder 2 used for adhesion after adjustment, which is the gist of the present embodiment, will be described. Here, FIG. 1 is a perspective view of the lens holder 2 in the present embodiment. FIG. 5 is a cross-sectional view around the adhesion portion of the lens holder 2 in the present embodiment.

  5A is a cross-sectional view of the image pickup apparatus according to the present embodiment as viewed from the optical axis direction and the subject side, and FIG. 5B is a cross-sectional view taken along the line AA in FIG. .

  In the present embodiment, the holding plate 5 is held by the lens holder 2 with the biasing force of the sensor rubber 8 and tightened with the screw 9 in the state where the tilt adjustment is performed as described above. Has the elasticity, the position of the holding plate 5 is not fixed. For this reason, the position of the image sensor 3 fixed integrally with the holding plate 5 is not necessarily fixed.

  For this reason, the lens holder 2 in the present embodiment is provided with bonding portions 2h, 2i, and 2j in order to bond and fix the lens holder 2 to the holding plate 5 after tilt adjustment. In the present embodiment, the bonding portions 2 i and 2 j correspond to an upper bonding portion provided above the lens holder 2, and the bonding portion 2 h corresponds to a lower bonding portion provided below the lens holder 2. .

  As shown in FIG. 1, the bonding portion 2 h has a shape protruding from the holding plate 5 in the direction of the image pickup device substrate 4 (on the side opposite to the subject). Further, the bonding portion 2 i and the bonding portion 2 j are grooves provided from the holding plate 5 toward the side opposite to the imaging element substrate 4 (subject side). Furthermore, each of the bonding portion 2i and the bonding portion 2j is provided in the vicinity of the screw 9 in a direction orthogonal to the optical axis of the imaging device in the present embodiment.

  Here, the optical adjustment operation of the imaging apparatus in the present embodiment is performed in a posture in which the optical axis of the lens barrel 1 is horizontal. Therefore, when an adhesive is applied to the outer peripheral portion of the holding plate 5 or the screw 9 itself as in the prior art, the adhesive hangs down due to gravity before the adhesive is cured, resulting in poor workability.

  However, the adhesion portions 2h, 2i, and 2j in the present embodiment have adhesion surfaces (application surfaces) parallel to the optical axis direction of the imaging device.

  As a result, even if the adhesives 23a, 23b, and 23c are poured in the directions indicated by the arrows in FIGS. 1 and 5 and applied to the adhesive portions 2h, 2i, and 2j, the applied adhesives 23a, 23b, and 23c are applied. Will not sag due to gravity. In addition, the adhesives 23a, 23b, and 23c can be applied in the same direction (that is, in the direction of gravity) at all three locations. As a result, workability is improved.

  Further, even when an ultraviolet curable adhesive is used as the adhesives 23a, 23b, and 23c, if the adhesive portions 2h, 2i, and 2j in the present embodiment are used, ultraviolet irradiation can be performed from the same direction at all three locations. It is possible and workability is good.

  Note that the cross section of the bonding portion 2h in the present embodiment, which is along the direction perpendicular to the optical axis of the imaging optical system included in the lens barrel 1, is formed in a substantially U-shape opening upward. However, it is not limited to this. For example, the cross section may be formed in a substantially U shape that opens upward.

  Similarly, the cross section of the bonding portions 2i and 2j in the present embodiment, which is along the direction perpendicular to the optical axis of the imaging optical system included in the lens barrel 1, is also substantially U-shaped or open upward. You may form in the substantially U shape opened upwards.

  In addition, the cross section of the bonding portion 2h according to the present embodiment, which is along the optical axis direction of the imaging optical system included in the lens barrel 1, is substantially U-shaped with an upward opening, or the bonding portion 2h ( It may be formed in a substantially L shape that is bent upward from the end on the side opposite to the subject on the adhesive surface.

  In the present embodiment, the bonding surfaces of the bonding portions 2h, 2i, and 2j face upward, and correspond to bonding surfaces to which an adhesive is applied.

  Further, as shown in FIG. 5A, the adhesive portions 2i and 2j are accumulated inside the outer shape of the holding plate 5 on the plane orthogonal to the optical axis of the imaging device, and FIG. As shown in FIG. 1, the bonding portion 2 h is also shaped along the outer shape of the holding plate 5, and the adhesive accumulates on the outer shape of the holding plate 5.

  Further, in the present embodiment, the bonding portions 2h, 2i, 2j and the adhesives 23a, 23b, 23c overlap the lens barrel 1 when viewed along the optical axis direction of the imaging optical system included in the lens barrel 1. Are arranged as follows.

  This is also advantageous for downsizing in the direction orthogonal to the optical axis, as compared to the case of bonding at the outer peripheral portion of the holding plate.

  Moreover, if the screw is fixed to the holding plate with an adhesive, workability when reassembling after fixing with the adhesive is deteriorated. However, in this embodiment, since the screw 9 itself is not bonded to the holding plate 5, the workability when assembling is good.

  As described above, according to the present embodiment, there is provided an imaging apparatus capable of improving the workability of adhesion when the imaging apparatus 3 is tilted and fixed with adhesion when the imaging apparatus is in a horizontal posture. be able to.

  The present invention is not limited to these preferred embodiments, and various modifications and changes can be made within the scope of the gist.

DESCRIPTION OF SYMBOLS 1 Lens barrel 2h Adhesion part 2i Adhesion part 3 Image pick-up element 23a Adhesive 23b Adhesive

Claims (5)

A lens barrel including an imaging optical system;
An image sensor that captures an image of a subject formed by the imaging optical system;
An adjustment unit that adjusts the inclination of the imaging element with respect to the optical axis of the imaging optical system;
An upper adhesive portion provided above the lens barrel, and an upper adhesive portion to which an adhesive is applied in order to fix the imaging element whose inclination is adjusted by the adjustment portion to the lens barrel;
A lower adhesive portion provided below the lens barrel, and a lower adhesive portion to which an adhesive is applied in order to fix the imaging element whose inclination is adjusted by the adjustment portion to the lens barrel;
An imaging device comprising:
The upper adhesive portion is provided on the subject side of the imaging element in the optical axis direction of the imaging optical system,
The lower adhesive portion is provided on the opposite side of the subject from the imaging element in the optical axis direction of the imaging optical system,
2. An imaging apparatus according to claim 1, wherein both the upper adhesive portion and the lower adhesive portion are coated with the respective application surfaces to which the adhesive is applied. A holding member for holding the image sensor;
The holding member is provided with a notch cut out so as not to interfere with the lower adhesive portion,
The imaging apparatus according to claim 1, wherein the lower adhesive portion is inserted into the notch.   The imaging apparatus according to claim 2, wherein the lower adhesive portion overlaps the lens barrel when viewed along the optical axis direction of the imaging optical system.   The cross section along the direction perpendicular to the optical axis of the imaging optical system of the lower adhesive portion is substantially U-shaped or substantially U-shaped. Imaging device.   5. The imaging apparatus according to claim 1, wherein the lower adhesive portion has a substantially L-shaped or substantially U-shaped cross section along the optical axis direction of the imaging optical system. .

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