Imaging apparatus

Abstract

To provide an imaging apparatus that can prevent positional deviation of an image pickup device due to hardening shrinkage of an adhesive.SOLUTION: An imaging apparatus has: a lens barrel that holds an optical system; an image pickup device that receives light from the optical system; a first holding unit that holds the image pickup device; and a second holding unit that holds the lens barrel and the first holding unit. The first holding unit includes: a base part that is provided with an opening facing the image pickup device; first adhesion parts that are bonded to the second holding unit by a first adhesive; and first connection parts that connect the base part and the first adhesion parts to each other. The first connection parts are bent on a section perpendicular to an imaging surface of the image pickup device. The first connection parts are each provided with a notch that is filled with the first adhesive.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to an imaging device. [Background technology]

[0002] Conventionally, in imaging devices such as digital cameras, an adjustment method known as “tilt adjustment” has been proposed in which the tilt of the image sensor relative to the optical axis of the optical system is adjusted in the pitch and yaw directions to align the tilt of the image formation plane of the optical system with the tilt of the imaging plane of the image sensor.

[0003] Patent Document 1 discloses an imaging device in which, after tilt adjustment, an adhesive is applied between the lens barrel and the imaging element holding means in the optical axis direction to fix the position of the imaging element. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6147096 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the imaging device of Patent Document 1, the position of the imaging element in the optical axis direction may shift due to hardening shrinkage of the adhesive. In this case, an imaging device that is sensitive to the position shift of the imaging element in the optical axis direction, such as a fixed-focus imaging device that measures the distance to the subject using a pair of imaging elements, cannot measure the distance to the subject with high accuracy.

[0006] An object of the present invention is to provide an imaging device capable of suppressing misalignment of an imaging element caused by hardening shrinkage of an adhesive. [Means for solving the problem]

[0007] An imaging device according to one aspect of the present invention has a lens barrel that holds an optical system, an imaging element that receives light from the optical system, a first holding part that holds the imaging element, and a second holding part that holds the lens barrel and the first holding part, the first holding part having a base part with an opening facing the imaging element, a first adhesive part that is adhered to the second holding part by a first adhesive, and a first connecting part that connects the base part and the first adhesive part, the first connecting part being curved in a cross section perpendicular to the imaging surface of the imaging element, and the first connecting part being provided with a notch into which the first adhesive can enter. Effect of the Invention

[0008] According to the present invention, it is possible to provide an imaging device capable of reducing misalignment of an imaging element caused by cure shrinkage of an adhesive. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of an imaging device according to a first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the imaging device of the first embodiment. [Diagram 3] FIG. 2 is a cross-sectional view of the imaging device of the first embodiment. [Figure 4] FIG. 2 is a perspective view of an imaging element holder according to the first embodiment. [Diagram 5] 1 is a perspective view of a state in which an adhesive is applied to an imaging element holding means of the first embodiment. FIG. [Figure 6] FIG. 11 is a perspective view of a state in which an adhesive is applied to an imaging element holding means of the second embodiment. [Figure 7] 1 is a functional block diagram of an in-vehicle system according to an embodiment; [Figure 8] 1 is a schematic diagram of a main portion of a vehicle according to an embodiment; [Figure 9] 4 is a flowchart showing an operation example of the in-vehicle system according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to refer to the same components, and duplicated descriptions will be omitted. [Example 1] FIG. 1 is a perspective view of the imaging device of this embodiment. FIG. 2 is an exploded perspective view of the imaging device of this embodiment. The imaging device includes a lens barrel 1, an imaging element unit 2, an imaging element holding means (first holding portion) 3, an imaging element holding holder (second holding portion) 4, a first adhesive 5, an IR cut filter 6, and a second adhesive 7. The lens barrel 1 houses (holds) an optical system including a lens described later. The imaging element unit 2 includes an imaging element package 2a and an imaging element substrate 2b on which an imaging element that receives light from an optical system such as a CMOS sensor is mounted. The imaging element holding means 3 holds the imaging element unit 2. The imaging element holding holder 4 holds the lens barrel 1 and the imaging element holding means 3. The first adhesive 5 bonds the imaging element holding means 3 and the imaging element holding holder 4. The IR cut filter 6 is attached to the imaging element unit 2. The second adhesive 7 bonds the imaging element holding means 3 and the imaging element package 2a. The lens barrel 1 and the imaging element holding holder 4 may be integrally configured. In the imaging device of this embodiment, the image of the object (subject) formed by the optical system contained in the lens barrel 1 is converted into an electrical signal by the imaging element, and the converted electrical signal is sent to the main body equipped with an image processing IC and an image processing CPU for use.

[0011] FIG. 3 is a cross-sectional view of the imaging device of this embodiment. FIG. 3(a) is a cross-sectional view of the imaging device of this embodiment as seen from the object side (subject side). FIG. 3(b) is a cross-sectional view of line AA in FIG. 3(a). The lens barrel 1 is constructed by inserting a lens and a spacer from an opening 1a, and then fixing the lens with a pressing ring. In the lens barrel 1, a lens 8, a spacer 13, a lens 9, a spacer 14, a lens 10, a spacer 15, a lens 11, a spacer 16, and a lens 12 are arranged in this order from the object side to the image side. A pressing ring 17 is screwed and fixed to the end on the opening 1a side. An image sensor holder 4 is screwed and fixed to the end on the opening 1b side.

[0012] The first adhesive 5 is applied to the first flat surface portion (first adhesive portion) 3a of the imaging element holding means 3 and the imaging element holder 4 along a direction parallel to the optical axis (optical axis of the optical system) of the imaging device. The second flat surface portion (second adhesive portion) 3b of the imaging element holding means 3 is the surface opposite to the first flat surface portion 3a and facing the imaging element package 2a. The second adhesive 7 is applied to the second flat surface portion 3b and the imaging element package 2a.

[0013] The optical adjustment for the imaging device of this embodiment will be described below. In the imaging device, there are tilts and positional deviations of parts in the lens barrel 1 due to manufacturing errors, and tilts in the imaging surface of the imaging element due to manufacturing, and there is a deviation in focal length due to individual differences from the design value. There are two problems related to the deviation in focal length: the deviation in focal length when viewed as an entire image, and the problem of one-sided blur in which the asymmetry of the deviation in focal length at the periphery of the image becomes stronger compared to the center, resulting in noticeable blur at the periphery. Optical adjustment is required to address the two problems. As optical adjustment, focus adjustment is mainly performed for the deviation in focal length of the entire image, and tilt adjustment is performed for the one-sided blur.

[0014] Here, the attitude of the optical axis of the imaging device and the evaluation chart when performing the optical adjustment work will be described. The optical adjustment work is performed in a state where the optical axis of the imaging device is horizontal to the ground and an evaluation chart (not shown) is placed in front of the imaging device. The evaluation chart is placed at a set distance (predetermined distance) away from the imaging device. The optical adjustment work is performed while checking the resolution and contrast value from the image of the evaluation chart captured by the imaging device. As an example of the evaluation chart, a chart is known in which slit patterns with different readable widths are provided at the center and periphery in a combination of horizontal and vertical directions (or a combination of meridional and sagittal directions) according to the level of resolution.

[0015] The focus adjustment work, which is an optical adjustment work performed in the imaging device of this embodiment, will be described below. For example, in an imaging device having a focus mechanism for focusing on a subject, if the deviation in focal length due to manufacturing errors is within a range of variation allowed by design, it is possible to accurately focus the image by autofocus. Here, autofocus is a function that drives the focus mechanism to adjust the focal length. However, the imaging device of this embodiment does not have a focus mechanism, that is, the positions of the optical system and the imaging element are constant and the focal position is fixed. In the optical adjustment work, it is necessary to perform focus adjustment for each individual in the distance in the optical axis direction between the lens barrel 1 and the imaging element unit 2 in response to individual variations in focal length. In the focus adjustment, with each component attached to the lens barrel 1 as described above, the lens barrel 1 is fixed to the adjustment tool so that the optical axis of the imaging device is horizontal to the ground, and then an evaluation chart is photographed. The resolution is read from the image of the evaluation chart. Here, if the read resolution is below the standard value, the position of the imaging element holding means 3 in the optical axis direction of the imaging device is adjusted until the resolution is within the range of the standard value.

[0016] The tilt adjustment work will be described below. As described above, depending on the combination of the tilt of the imaging plane of the optical system caused by manufacturing errors and the tilt of the imaging plane of the image sensor, the asymmetric shift in focal length at the periphery of the image captured by the image capture device may become stronger compared to the center. In this case, a state called one-sided blur occurs in which blur is noticeable at the periphery of the captured image. To address one-sided blur, the contrast value and resolution of the periphery are read from the image of the adjustment chart and adjustments are made by tilting the image sensor holding means 3. In the image capture device of this embodiment, the position of the image sensor unit 2 is determined while performing focus adjustment and tilt adjustment.

[0017] The adhesive portion that is bonded after the focus adjustment and the position adjustment will be described below. FIG. 4 is a perspective view of the image sensor holder 4 of this embodiment. The round hole 4a is used to determine the position on the housing (not shown). The oblong hole 4b is used to restrict the rotation on the housing (not shown). The position on the housing (not shown) is determined by the round hole 4a and the oblong hole 4b. The through hole 4c is used to insert a screw (not shown) for fixing to the housing (not shown). The space 4d is used to insert the image sensor holder 3 with which the image sensor unit 2 is integrated. The opening 4e is used to allow light from the optical system including the lens housed in the lens barrel 1 to reach the image sensor unit 2. The adhesive groove 4f is used to bond the image sensor holder 3 and the image sensor holder 4 with the first adhesive 5. The adhesive groove 4f is provided at an equal distance from the image sensor when the image sensor unit 2 is inserted. That is, the distance from the center of each of the application points of the multiple first adhesives 5 to the center of the image sensor is equal.

[0018] FIG. 5 is a perspective view of the imaging element holding means 3 of this embodiment in a state where an adhesive is applied. The first flat portion 3a extends from the first bent portion (first connection portion) 3c, and a first adhesive 5 for adhering the imaging element holding holder 4 is applied to the first flat portion 3a. That is, the first flat portion 3a is adhered to the imaging element holding holder 4 by the first adhesive 5. The second flat portion 3b is the surface opposite to the first flat portion 3a, and a second adhesive 7 is applied to the second flat portion 3b. The first bent portion 3c is provided at the end of the base portion 3d, curves in a cross section perpendicular to the imaging surface of the imaging element, and connects the base portion 3d and the first flat portion 3a. The base portion 3d and the first bent portion 3c have surfaces that are not parallel to each other. In addition, the imaging surface of the imaging element and the first bent portion 3c have surfaces that are not parallel to each other. The base portion 3d is provided with an opening 3e for inserting the imaging element unit 2. The opening 3e faces the imaging element. The second bent portion (second connection portion) 3f is provided at the end of the opening 3e. The third flat portion (first adhesive portion) 3g is formed from the end of the second bent portion 3f. The third flat portion 3g is coated with the second adhesive 7 along a direction parallel to the imaging element package 2a and the optical axis direction. The notch 3h is a relief portion into which the first adhesive 5 coated between the first flat portion 3a and the adhesive groove 4f enters. Even if the first adhesive 5 overflows from the first flat portion 3a, the notch 3h can prevent the first adhesive 5 from adhering to the first bent portion 3c. This can prevent uneven coating of the adhesive on the upper and lower sides, which occurs when the upper adhesive portion wraps around the first bent portion 3c due to gravity while the lower adhesive portion does not wrap around the first bent portion 3c in the gravity direction. In addition, by applying the first adhesive 5 to the imaging element holding holder 4 along the optical axis direction via the first bent portion 3c, it is possible to suppress positional deviation of the imaging element unit 2 in the optical axis direction caused by the hardening shrinkage of the adhesive. [Example 2] In this embodiment, only the configuration different from the first embodiment will be described, and the common configuration will be given the same reference numerals as in the first embodiment, and the description will be omitted.

[0019] FIG. 6 is a perspective view of the imaging element holding means 3 of this embodiment in a state where an adhesive is applied. The first flat portion 101a extends from the first bent portion 101c, and the first adhesive 5 for adhering the imaging element holding holder 4 is applied to the first flat portion 101a. The second flat portion 101b is the surface opposite to the first flat portion 101a, and the second adhesive 7 is applied to the second flat portion 101b. The first bent portion 101c is provided at the end of the base portion 101d. The base portion 101d is provided with an opening 101e for inserting the imaging element unit 2. The second bent portion 101f is provided at the end of the opening 101e. The third flat portion 101g is formed from the end of the second bent portion 101f. The second adhesive 7 is applied to the third flat portion 101g along a direction parallel to the imaging element package 2a and the optical axis direction. The notch 101h is a recess for the first adhesive 5 applied between the first flat surface portion 101a and the adhesive groove 4f. The fourth flat surface portion (fourth adhesive portion) 101i is formed from the end of the notch 101h.

[0020] With the above configuration, the first adhesive 5 is bonded up to the fourth flat portion 101i, so that the bonding area can be increased. Therefore, the peel strength of the adhesive can be ensured. Therefore, it is possible to suppress the positional deviation of the image sensor unit 2 in the optical axis direction, and to enhance the resistance to vibration and impact.

[0021] The present invention can also be applied to an optical system that is sensitive to the optical axis direction and acquires parallax images using light beams from two different pupil positions. [In-vehicle system] Fig. 7 is a configuration diagram of an in-vehicle camera 1000 according to this embodiment and an in-vehicle system (control system, driving support device) 700 including the same. The in-vehicle system 700 is held by a movable body (mobile device) such as an automobile (vehicle), and is a system for supporting driving (piloting) of the vehicle based on image information of the surroundings of the vehicle acquired by the in-vehicle camera 1000. Fig. 8 is a schematic diagram of a vehicle 800 as a mobile device including the in-vehicle system 700. Fig. 8 shows a case where the imaging range 50 of the in-vehicle camera 1000 is set in front of the vehicle 800, but the imaging range 50 may be set to the rear or side of the vehicle 800.

[0022] As shown in Fig. 7, the vehicle-mounted system 700 includes an in-vehicle camera 1000, a vehicle information acquisition device 20, a control device (control unit, ECU: electronic control unit) 30, and a warning device (warning unit) 40. The in-vehicle camera 1000 also includes an imaging unit 1001, an image processing unit 1002, a parallax calculation unit 1003, a distance acquisition unit (acquisition unit) 1004, and a collision determination unit 1005. The image processing unit 1002, the parallax calculation unit 1003, the distance acquisition unit 1004, and the collision determination unit 1005 constitute a processing unit. The imaging unit 1001 includes an optical system according to any one of the above-mentioned embodiments and an imaging element.

[0023] 9 is a flowchart showing an example of the operation of the in-vehicle system 700 according to this embodiment. The operation of the in-vehicle system 700 will be described below with reference to this flowchart.

[0024] First, in step S1, an image of an object (subject) such as an obstacle or a pedestrian around the vehicle is captured by the imaging unit 1001, and a plurality of image data (parallax image data) are acquired.

[0025] In step S2, vehicle information is acquired by the vehicle information acquisition device 20. The vehicle information includes the vehicle speed, yaw rate, steering angle, and the like.

[0026] In step S3, the image processing unit 1002 performs image processing on the multiple image data acquired by the imaging unit 1001. Specifically, image feature analysis is performed to analyze feature quantities such as the amount and direction of edges in the image data and density values. Here, the image feature analysis may be performed on each of the multiple image data, or may be performed on only some of the multiple image data.

[0027] In step S4, disparity (image shift) information between the multiple image data acquired by the imaging unit 1001 is calculated by the disparity calculation unit 1003. As a method for calculating disparity information, a known method such as an SSDA method or an area correlation method can be used, and therefore a description thereof will be omitted in this embodiment. Note that steps S2, S3, and S4 may be performed in the above order, or may be processed in parallel with each other.

[0028] In step S5, distance acquisition unit 1004 acquires (calculates) distance information about the object captured by imaging unit 1001. The distance information can be calculated based on the parallax information calculated by parallax calculation unit 1003 and internal and external parameters of imaging unit 1001. Note that the distance information here refers to information about the relative position of the object, such as the distance from the object, the defocus amount, and the image shift amount, and may directly represent the distance value of the object in the image or indirectly represent information corresponding to the distance value.

[0029] Then, in step S6, the collision determination unit 1005 determines whether or not the distance to the object is within a preset distance range, using the vehicle information acquired by the vehicle information acquisition device 20 and the distance information calculated by the distance acquisition unit 1004. This makes it possible to determine whether or not an object exists within a set distance around the vehicle, and to determine the possibility of a collision between the vehicle and the object. If an object exists within the set distance, the collision determination unit 1005 determines that there is a "possibility of collision" (step S7), and if there is no object within the set distance, it determines that there is no "possibility of collision" (step S8).

[0030] Next, when the collision determination unit 1005 determines that there is a "possibility of collision," it notifies (transmits) the determination result to the control device 30 and the warning device 40. At this time, the control device 30 controls the vehicle based on the determination result by the collision determination unit 1005 (step S6), and the warning device 40 issues a warning to the vehicle user (driver, passengers) based on the determination result by the collision determination unit 1005 (step S7). Note that the notification of the determination result may be sent to at least one of the control device 30 and the warning device 40.

[0031] The control device 30 can control the movement of the vehicle by outputting control signals to the driving parts (engine, motor, etc.) of the vehicle. For example, the control device 30 performs control such as applying the brakes in the vehicle, releasing the accelerator, turning the steering wheel, and generating control signals to generate braking forces in each wheel to suppress the output of the engine or motor. In addition, the warning device 40 warns the user by, for example, issuing a warning sound (alarm), displaying warning information on the screen of a car navigation system, etc., and applying vibrations to the seat belt or steering wheel.

[0032] As described above, the in-vehicle system 700 according to this embodiment can effectively detect an object by the above-mentioned processing, and it becomes possible to avoid a collision between the vehicle and the object. In particular, by applying the optical system according to each of the above-mentioned embodiments to the in-vehicle system 700, it becomes possible to detect an object and judge a collision over a wide angle of view while miniaturizing the entire in-vehicle camera 1000 and increasing the degree of freedom of arrangement.

[0033] Note that various embodiments are possible for calculating the distance information. As an example, a case will be described in which a pupil division type image sensor having a plurality of pixel units regularly arranged in a two-dimensional array is adopted as the image sensor of the image sensor unit 1001. In the pupil division type image sensor, one pixel unit is composed of a microlens and a plurality of photoelectric conversion units, and can receive a pair of light beams passing through different regions in the pupil of the optical system and output a pair of image data from each photoelectric conversion unit.

[0034] Then, the image shift amount of each region is calculated by a correlation calculation between paired image data, and image shift map data representing the distribution of the image shift amount is calculated by the distance acquisition unit 1004. Alternatively, the distance acquisition unit 1004 may further convert the image shift amount into a defocus amount to generate defocus map data representing the distribution of the defocus amount (distribution on a two-dimensional plane of the captured image). The distance acquisition unit 1004 may also acquire distance map data of the distance to the object converted from the defocus amount.

[0035] Furthermore, the in-vehicle system 700 and the moving device 800 may be provided with a notification device (notification unit) for notifying the manufacturer of the in-vehicle system or the dealer of the moving device, etc., of the collision of the moving device 800 with an obstacle. For example, the notification device may be one that transmits information (collision information) related to the collision between the moving device 800 and an obstacle to a preset external notification destination by e-mail or the like.

[0036] In this way, by adopting a configuration in which the notification device automatically notifies collision information, it is possible to promptly take measures such as inspection and repair after a collision occurs. The destination of the collision information may be an insurance company, a medical institution, the police, or any other party set by the user. The notification device may be configured to notify the destination of not only collision information but also failure information of each part and consumption information of consumables. The detection of the presence or absence of a collision may be performed using distance information acquired based on the output from the light receiving unit, or may be performed by another detection unit (sensor).

[0037] In this embodiment, the in-vehicle system 700 is applied to driving assistance (collision damage reduction), but the in-vehicle system 700 may be applied to cruise control (including full-speed following function) and automatic driving. The in-vehicle system 700 is not limited to vehicles such as automobiles, but may be applied to moving bodies such as ships, aircraft, and industrial robots. The in-vehicle system 700 is not limited to moving bodies, but may be applied to various devices that use object recognition such as an intelligent transport system (ITS).

[0038] The disclosure of this embodiment includes the following configuration. (Configuration 1) A lens barrel for holding an optical system; an image sensor that receives light from the optical system; A first holder that holds the imaging element; a second holding portion that holds the lens barrel and the first holding portion, the first holding portion includes a base portion having an opening facing the imaging element, a first adhesive portion that is adhered to the second holding portion by a first adhesive, and a first connection portion that connects the base portion and the first adhesive portion; the first connection portion is curved in a cross section perpendicular to an imaging surface of the imaging element, An imaging device, wherein the first connection portion has a notch into which the first adhesive enters. (Configuration 2) 2. The imaging device according to configuration 1, wherein the first adhesive is applied to the first adhesive portion along a direction parallel to an optical axis of the optical system. (Configuration 3) 3. The imaging device according to configuration 1 or 2, wherein the distance from the center of each of the plurality of applied locations of the first adhesive to the center of the imaging element is equal. (Configuration 4) The imaging device described in any one of configurations 1 to 3, characterized in that the first holding portion faces the imaging element on the opposite side of the first adhesive portion and has a second adhesive portion to which a second adhesive is applied for adhering the imaging element. (Configuration 5) An imaging device described in any one of configurations 1 to 4, characterized in that the first holding portion has a second connection portion provided at an end of the opening, and a third adhesive portion provided at an end of the second connection portion and to which a second adhesive is applied for adhering the imaging element. (Configuration 6) An imaging device described in any one of configurations 1 to 5, characterized in that the first holding portion has a fourth adhesive portion formed from the end of the cutout and to which the first adhesive is applied. (Configuration 7) 7. The imaging device according to any one of configurations 1 to 6, wherein the lens barrel and the second holding portion are integrally provided. (Configuration 8) 8. The imaging device according to any one of configurations 1 to 7, wherein the focal position is fixed. (Configuration 9) 9. The imaging device according to any one of configurations 1 to 8, wherein the imaging element obtains parallax images using light beams from two different pupil positions of the optical system. (Configuration 10) 10. The imaging device according to any one of configurations 1 to 9, wherein the base portion and the first adhesive portion have surfaces that are non-parallel to each other. (Configuration 11) 11. The imaging device according to any one of configurations 1 to 10, wherein the imaging surface of the imaging element and the first adhesive portion have surfaces that are non-parallel to each other. (Configuration 12) 12. A control system comprising: an imaging device according to any one of configurations 1 to 11; and a determination unit that determines a possibility of a collision with an object based on distance information of the object acquired by the imaging device. (Configuration 13) 13. The control system according to claim 12, further comprising a control device that outputs a control signal to generate a braking force in a drive unit of the moving device when it is determined that there is a possibility of a collision between the vehicle and the object. (Configuration 14) 13. The control system according to configuration 12, further comprising a warning device that issues a warning to a user of the mobile device when it is determined that there is a possibility of a collision between the mobile device and the object. (Configuration 15) 13. The control system according to claim 12, further comprising a notification unit that notifies an outside party of information regarding a collision between the mobile device and the object. (Configuration 16) A moving device comprising the imaging device according to any one of configurations 1 to 11, and capable of holding and moving the imaging device. (Configuration 17) The moving device according to configuration 16, further comprising a determination unit that determines a possibility of a collision with the object based on distance information of the object obtained by the imaging device. (Configuration 18) 18. The moving device according to configuration 17, further comprising a control unit that outputs a control signal for controlling movement when it is determined that there is a possibility of a collision with the object. (Configuration 19) 18. The mobile device according to configuration 17, further comprising a warning unit that issues a warning to a user of the mobile device when it is determined that there is a possibility of a collision with the object. (Configuration 20) 18. The moving device according to claim 17, further comprising a notification unit that notifies an outside party of information regarding the collision with the object.

[0039] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0040] 1. Telescope tube 3. Image sensor holding means (first holding portion) 3a: First flat portion (first adhesive portion) 3c First bending portion (first connection portion) 3d base part 3e aperture 4 Image sensor holder (second holder) 5. The First Adhesive

Claims

1. A lens barrel for holding an optical system; an image sensor that receives light from the optical system; A first holding portion that holds the imaging element; a second holding portion that holds the lens barrel and the first holding portion, the first holding portion includes a base portion having an opening facing the imaging element, a first adhesive portion that is adhered to the second holding portion by a first adhesive, and a first connection portion that connects the base portion and the first adhesive portion; the first connection portion is curved in a cross section perpendicular to an imaging surface of the imaging element, The imaging device, wherein the first connection portion is provided with a notch into which the first adhesive enters.

2. 2 . The imaging device according to claim 1 , wherein the first adhesive is applied to the first adhesive portion in a direction parallel to an optical axis of the optical system.

3. 3. The imaging device according to claim 1, wherein the distance from the center of each of the plurality of applied locations of the first adhesive to the center of the imaging element is equal.

4. 3. The imaging device according to claim 1, wherein the first holding portion faces the imaging element on an opposite side to the first adhesive portion and has a second adhesive portion to which a second adhesive is applied for adhering the imaging element.

5. The imaging device described in claim 1 or 2, characterized in that the first holding portion comprises a second connection portion provided at an end of the opening, and a third adhesive portion provided at an end of the second connection portion and onto which a second adhesive is applied for adhering the imaging element.

6. 3. The imaging device according to claim 1, wherein the first holding portion includes a fourth adhesive portion formed from an end of the notch and to which the first adhesive is applied.

7. 3. The imaging apparatus according to claim 1, wherein the lens barrel and the second holding portion are integrally provided.

8. 3. The imaging device according to claim 1, wherein a focal position is fixed.

9. 3. The imaging apparatus according to claim 1, wherein the imaging element obtains parallax images using light beams from two different pupil positions of the optical system.

10. 3. The imaging device according to claim 1, wherein the base portion and the first adhesive portion have surfaces that are non-parallel to each other.

11. 3. The imaging device according to claim 1, wherein the imaging surface of the imaging element and the first adhesive portion have surfaces that are non-parallel to each other.

12. 3. A control system comprising: the imaging device according to claim 1; and a determination unit that determines a possibility of a collision with an object based on distance information of the object acquired by the imaging device.

13. 13. The control system according to claim 12, further comprising a control device that outputs a control signal to generate a braking force to a drive unit of the moving device when it is determined that there is a possibility of a collision between the vehicle and the object.

14. 13. The control system according to claim 12, further comprising a warning device that issues a warning to a user of the mobile device when it is determined that there is a possibility of a collision between the mobile device and the object.

15. 13. The control system according to claim 12, further comprising a notification unit that notifies an outside party of information regarding a collision between the mobile device and the object.

16. 3. A moving device comprising the imaging device according to claim 1 or 2, the moving device being capable of holding and moving the imaging device.

17. The moving device according to claim 16, further comprising a determination unit that determines a possibility of a collision with the object based on distance information of the object obtained by the imaging device.

18. 18. The moving device according to claim 17, further comprising a control unit that outputs a control signal for controlling the movement when it is determined that there is a possibility of a collision with the object.

19. 18. The mobile device according to claim 17, further comprising a warning unit that issues a warning to a user of the mobile device when it is determined that there is a possibility of a collision with the object.

20. The mobile device according to claim 17, further comprising a notification unit that notifies an outside source of information regarding the collision with the object.

Images