JP2010109916A - Image sensor mounting adjusting mechanism, image capturing apparatus, and method of manufacturing image capturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress an adjustment burden on a worker who adjusts a relative positional relationship between an image sensor and a lens. <P>SOLUTION: In the image sensor mounting adjusting mechanism 40, a sub holder 18 for supporting an image sensor 28 includes an abutting section 18a. The abutting section 18a is provided to be abutted to an abutted surface 14c of a main holder 14 at a position closer to an optical axis X of a lens than a screw inserting hole 18b that is a part to be adjusted. The abutting section 18a jas a circular edge 18f through the center of which the optical axis X of the lens is passed when abutting to the main holder 14. An adjusting screw 32 is screwed into a sub holder unit 30, thereby regulating relative movement to a front side of the apparatus with respect to the main holder 14. An adjustment worker adjusts a distance between the screw inserting hole 18b and the main holder 14 by rotating the adjusting screw 32. Thus, when the adjusting screw 32 is rotated and the sub holder 18 is tilted, the abutting section 18a is abutted to the main holder 14 at one point of the edge 18f. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an image sensor mounting adjustment technique in an image pickup apparatus, and more particularly to a technique for adjusting an inclination of an image sensor with respect to an optical axis of a lens.

In recent years, imaging devices such as digital cameras and digital video cameras using imaging elements such as CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor) have been rapidly spread. Such an imaging apparatus usually has a lens in addition to such an image sensor, and forms an image of a subject on the imaging surface of the image sensor by the lens. For this reason, the relative positional relationship between the lens and the image sensor is an important factor for suppressing deterioration in image quality. For this reason, for example, the second reference surface of the image sensor holding member is urged so as to be in close contact with the third reference surface of the image pickup lens holding member, and is screwed into the image sensor holding member so that the distal end portion contacts the image pickup lens holding member An image sensor adjustment mechanism that adjusts the tilt of the image sensor relative to the optical axis of the imaging lens by turning an adjustment screw has been proposed (see, for example, Patent Document 1).
JP 2005-277628 A

  The image is picked up by the image pickup surface of the image pickup element, but as described above, the inclination of the image pickup surface is adjusted by adjusting the inclination of the image pickup element itself. However, since the necessary adjustment amount of the tilt of the image sensor with respect to the optical axis of the lens is very small, development of an adjustment mechanism that can easily perform such a fine adjustment is currently required. In addition, in such an image pickup device, many image pickup devices in the same lot may be inclined with respect to the optical axis of the lens in the same tendency when the image pickup apparatus is manufactured. In such a case, when an image pickup apparatus is manufactured using the image pickup device of the lot, the number of cases in which the relative positional relationship between the image pickup device and the lens must be adjusted increases, leading to an increase in adjustment man-hours. .

  Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to suppress the man-hours for adjusting the relative positional relationship between the imaging element and the lens.

  In order to solve the above problems, an image sensor mounting adjustment mechanism according to an aspect of the present invention is provided with a main holder to which a lens is fixed, and a contact portion that supports the image sensor and should contact the main holder. Adjust the distance in the optical axis direction between the main holder and the sub-holder, the pressing means for pressing the sub-holder against the main holder so that the abutting part is in contact with the main holder, and the adjusted position of the sub-holder that is off the optical axis of the lens. And a tilt adjusting means for tilting the sub-holder with the part of the contact portion as a fulcrum to adjust the tilt of the image sensor with respect to the optical axis. The sub-holder is provided so that the position closer to the optical axis than the portion to be adjusted is tilted to a fulcrum when adjusting the tilt of the image sensor.

  Another aspect of the present invention is an imaging apparatus. This device includes a lens, a main holder to which the lens is fixed, an imaging device, a sub-holder that supports the imaging device and is provided with a contact portion that should contact the main holder, and the contact portion as a main holder. By pressing the sub holder against the main holder so as to make contact, and adjusting the distance between the main holder and the position to be adjusted off the optical axis of the lens in the sub holder, the sub holder is supported with a part of the contact portion as a fulcrum. Tilt adjusting means for tilting and adjusting the tilt of the image sensor with respect to the optical axis. The contact portion is provided so as to contact the main holder at a portion closer to the optical axis than the adjusted portion.

  Yet another embodiment of the present invention is also an imaging apparatus. The apparatus includes a lens, a main holder to which the lens is fixed, an image pickup device, a support portion that supports the image pickup device, a sub holder provided with a contact portion to be brought into contact with the main holder, and a contact portion. Pressing means for pressing the main holder against the main holder. The sub-holder is formed by a forming jig in which a portion for forming the contact portion is separated from the other portion in order to adjust an assumed inclination amount of the support portion when pressed against the main holder.

  Yet another embodiment of the present invention is a method for manufacturing an imaging device. This method is based on the inclination of the imaging surface of the imaging device with respect to the mounting reference surface, or the optical axis of the lens in a state where the contact portion of the first sub-holder that supports the imaging device is pressed against the main holder to which the lens is fixed. A step of measuring the inclination of the image sensor, a step of specifying the shape of the contact portion to be formed in order to reduce the acquired inclination, and the first sub-holder so as to be formed in the shape of the specified contact portion The step of adjusting the shape of the contact part when it is molded by the shape adjustment mechanism provided on the molding jig formed with the mold, and the imaging element supported by the molding jig whose shape when the contact part is molded is adjusted Attaching the second sub-holder to the main holder.

  ADVANTAGE OF THE INVENTION According to this invention, the adjustment man-hour of the relative positional relationship of an image pick-up element and a lens can be suppressed.

  Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view illustrating a configuration of an imaging apparatus 10 according to the present embodiment. In FIG. 1, the left side is the front of the apparatus and the right side is the rear of the apparatus. The imaging device 10 is mounted on an imaging device such as a digital video camera. The imaging device stores moving image data and still image data obtained by the imaging device 10 in a storage unit such as a memory or a hard disk. Note that the imaging device may store these data on a digital video tape.

  The imaging device 10 includes a lens unit 12 and an imaging element attachment adjustment mechanism 40. The lens unit 12 has a plurality of lenses (not shown) inside. The image sensor attachment adjustment mechanism 40 includes a main holder 14, a sub holder unit 30, and a lid member 24.

  The main holder 14 is fixed to the rear surface of the housing of the lens unit 12. For this reason, the lens included in the lens unit 12 is indirectly fixed to the main holder 14 via the housing of the lens unit 12.

  The sub holder unit 30 includes the adjustment plate 16, the sub holder 18, and the substrate 20. Both the adjustment plate 16 and the sub-holder 18 are formed in a plate shape, and are fastened and fixed by mounting screws 26 in a state where one surface is in contact with each other. The substrate 20 is a printed wiring board, and an image sensor 28 is soldered on one surface thereof. The substrate 20 is fixed to the sub holder 18 with the surface on which the image sensor 28 is provided facing the sub holder 18.

  After the sub-holder unit 30 is accommodated in the main holder 14, the lid member 24 is applied to the main holder 14 and fixed by the mounting screws 34. The leaf spring 22 is attached to the surface of the lid member 24 on the front side of the apparatus. The leaf spring 22 functions as a pressing unit that presses the sub-holder unit 30 toward the main holder 14.

  In the image sensor mounting adjustment mechanism 40, the adjustment screw 32 can be inserted from the outside of the lid member 24. The user can adjust the inclination of the image sensor 28 with respect to the optical axis of the lens included in the lens unit 12 by inserting the adjustment screw 32 into the lid member 24 and rotating it.

  FIG. 2 is a view of the sub holder unit 30 according to the present embodiment as viewed from the rear of the apparatus. In addition to the sub holder unit 30, the leaf spring 22 is also illustrated so that the positional relationship with the leaf spring 22 is clear. The leaf spring 22 is formed by bending a U-shaped plate member. In addition, the substrate 20 is provided with an opening 20 a that is a rectangular through hole for radiating heat from the image sensor 28. The leaf spring 22 applies a biasing force to the substrate 20 so that the opening 20a is positioned at the center of the U-shape. The sub-holder unit 30 is pressed toward the main holder 14 by the urging force of the leaf spring 22.

  FIG. 3 is a cross-sectional view of the image sensor attachment adjusting mechanism 40 according to the present embodiment. FIG. 3 shows a state where the image sensor mounting adjustment mechanism 40 is cut along a vertical plane including the optical axis of the lens.

  As shown in FIG. 3, the main holder 14 is provided with a sub-holder accommodating portion 14b so as to be cut out from the opening surface 14a. The sub holder unit 30 is accommodated in the sub holder accommodating portion 14b. A contacted surface 14c that is a flat surface is provided at the bottom of the sub-holder housing portion 14b. The abutted surface 14c serves as a reference surface that determines the position of the image sensor 28 in the longitudinal direction of the apparatus. The sub-holder 18 is provided with a contact portion 18a that protrudes from one surface. The abutment portion 18 a abuts against the abutted surface 14 c of the main holder 14, whereby the sub holder unit 30 is positioned in the apparatus front-rear direction with respect to the main holder 14.

  After the sub holder unit 30 is accommodated in the sub holder accommodating portion 14 b, the lid member 24 is abutted against the opening surface 14 a and is fixed to the main holder 14 by the attachment screw 34. A leaf spring 22 is attached to the lid member 24. When the lid member 24 is fixed to the main holder 14, the leaf spring 22 presses the substrate 20 toward the front of the apparatus, and the sub-holder unit 30 is pressed toward the front of the apparatus. . In this way, the leaf spring 22 causes the contact portion 18 a of the sub holder 18 to contact the contacted surface 14 c of the main holder 14.

  A female screw portion 16 a is provided around the edge of the adjustment plate 16. The sub-holder 18 is provided with a screw insertion hole 18b that is coaxial with the female screw portion 16a when fixed to the adjustment plate 16. The screw insertion hole 18b has an inner diameter larger than the outer diameter of a screw that is screwed into the female screw portion 16a.

  The lid member 24 is provided with a screw insertion hole 24a. When the lid member 24 is attached to the main holder 14, the screw insertion hole 24a is disposed so as to be coaxial with the female screw portion 16a of the adjustment plate 16 in the sub-holder unit 30 included therein.

  The adjustment screw 32 is inserted into the screw insertion hole 24 a from the outer surface 24 b of the lid member 24, and further inserted into the screw insertion hole 18 b of the sub holder 18, and the tip thereof is screwed into the female screw portion 16 a of the adjustment plate 16. When the adjustment screw 32 is turned by the user, the distance between the main holder 14 and the screw insertion hole 18b at the position away from the optical axis X of the lens in the sub-holder 18 is adjusted. As a result, the sub-holder 18 is tilted with a part of the contact portion 18a as a fulcrum, and the tilt of the image sensor 28 with respect to the optical axis X of the lens is adjusted. For this reason, the portion where the screw insertion hole 18b is provided is an adjusted portion for adjusting the inclination of the image sensor 28. Hereinafter, the distance between the optical axis X of the lens and the center of the screw insertion hole 18b will be described as L1.

  FIG. 4 is an enlarged view of a region P in FIG. The main holder 14 has a first positioning protrusion 14d above the contacted surface 14c and a second positioning protrusion 14e below the contacted surface 14c. It is provided to protrude. On the other hand, the sub-holder 18 is provided with a first positioning hole 18c that is a round hole and a second positioning hole 18d that is a long hole. By inserting the first positioning protrusion 14d into the first positioning hole 18c and the second positioning protrusion 14e into the second positioning hole 18d, the sub holder 18 is perpendicular to the optical axis X with respect to the main holder 14. Positioned in the direction.

  The sub-holder 18 is provided with a support portion 18g that is a flat surface facing the rear of the apparatus when the sub-holder unit 30 is accommodated in the sub-holder accommodating portion 14b. The imaging element 28 has a flat glass portion 28a, and the substrate 20 is attached to the sub-holder 18 in a state where the glass portion 28a is applied to the support portion 18g.

  The image sensor 28 is connected to the substrate 20 by soldering. Due to the floating of the solder or the like, there is a possibility that the inclination of the image sensor 28 with respect to the substrate 20 may vary. Thus, by causing the glass portion 28a to abut against the contact portion 18a, it is possible to more favorably suppress the variation in the angle between the imaging surface of the imaging element 28 and the optical axis X.

  The opening 20a is filled with a gel (not shown) in order to dissipate heat generated by the image sensor 28. In order to easily release the heat generated by the image sensor 28 to the outside of the imaging device 10, more gel may be filled so as to contact both the back surface of the image sensor 28 and the inner surface of the lid member 24.

  The contact portion 18a is provided so as to protrude from the front surface 18e facing the front of the apparatus when the sub holder unit 30 is accommodated in the sub holder accommodation portion 14b. The abutting portion 18a has a flat portion that abuts against the abutted surface 14c of the main holder 14. The abutting portion 18a is provided with a circular edge portion 18f. The edge 18f has a radius L2 that is smaller than the distance L1 between the screw insertion hole 18b and the optical axis of the lens. The contact portion 18a is provided so as to pass through the center of the edge portion 18f having a circular optical axis X when the sub holder 18 is attached to the main holder 14. For this reason, the abutting portion 18a is provided so as to abut on the main holder 14 at a position closer to the optical axis X of the lens than the screw insertion hole 18b which is an adjusted portion. Accordingly, the sub-holder 18 is provided so as to be inclined with respect to a position closer to the optical axis of the lens than the screw insertion hole 18b, which is an adjusted portion, when adjusting the inclination of the image sensor 28.

  FIG. 5A is a cross-sectional view of the image sensor attachment adjustment mechanism 40 in a state in which the adjustment screw 32 is not attached, and FIG. 5B is a state in which the adjustment screw 32 is not attached to some portions. It is the figure which looked at the image pick-up element attachment adjustment mechanism 40 from the apparatus back. FIGS. 5A and 5B schematically show an actual image sensor mounting adjustment mechanism 40. FIGS. 6A, 6B, and 7 to 9 described below. Is the same.

  When the adjustment screw 32 is not attached, the entire area of the contact portion 18a of the sub-holder 18 contacts the contacted surface 14c of the main holder 14 by the urging force of the leaf spring 22 as shown in FIG. . In this state, the adjustment operator measures the inclination angle of the imaging surface of the imaging element 28 (hereinafter simply referred to as “inclination angle”) by measuring the inclination angle of the glass portion 28a of the imaging element 28 with respect to the plane perpendicular to the optical axis X, for example. The “tilt angle of the image sensor 28”) and the tilt direction are acquired. When the tilt angle of the image sensor 28 is smaller than the threshold angle, it is unnecessary to adjust the tilt angle of the image sensor 28, and the main holder 14 remains in a state where the entire contact portion 18 a is in contact with the contacted surface 14 c. And the sub-holder 18 are fixed by adhesion. The main holder 14 is provided with an opening for bonding, and the main holder 14 and the sub-holder 18 are supplied with an adhesive to a bonding portion (not shown) provided in advance in both. Glued together.

  Further, as shown in FIG. 5B, the lid member 24 is provided with three screw insertion holes 24a on the upper side of the apparatus, on the lower left side of the apparatus, and on the lower right side of the apparatus. The three screw insertion holes 24a are arranged so that each is located at the apex of a triangle where the optical axis X is located substantially at the center.

  6A is a cross-sectional view of the image sensor mounting adjustment mechanism 40 in a state in which the adjustment screw 32 is attached to a part of the image sensor. FIG. 6B is a cross-sectional view of the adjustment screw 32 attached to the part of the image sensor. It is the figure which looked at the image pick-up element attachment adjustment mechanism 40 of the state of being seen from the apparatus back.

  FIG. 6A and FIG. 6B show an example in which the adjustment screw 32 is inserted into the screw insertion hole 24a above the apparatus. Thus, the adjustment screw 32 is screwed into the sub-holder unit 30 at a position deviated from the optical axis X, and movement to the front of the apparatus is restricted by the outer surface 24b of the lid member 24 fixed to the main holder 14. . For this reason, the adjustment screw 32 is rotated in the tightening direction (right rotation direction) by the adjustment operator, whereby the distance in the optical axis X direction between the screw insertion hole 18b and the main holder 14 is expanded, and the sub-holder unit 30 is tilted with respect to the optical axis X.

  The adjustment operator rotates the adjustment screw 32 while looking at the values of the measured inclination angle and inclination direction until the inclination angle of the image sensor 28 becomes smaller than a predetermined threshold angle. As described above, the edge portion 18f of the contact portion 18a is formed in a circular shape. For this reason, no matter what direction the sub-holder 18 is tilted, the contact portion 18a contacts the contact surface 14c of the main holder 14 at one point of the contact point Q of the edge portion 18f. Accordingly, the inclination of the sub-holder unit 30 with respect to the optical axis X, that is, the inclination of the image sensor 28 can be smoothly adjusted by inserting and turning the adjustment screw 32 through a part of the three screw insertion holes 24a. It becomes. The shape of the edge portion 18f is not limited to a circle, and is formed so as to come into contact with the main holder 14 at a point closer to the optical axis X of the lens than the screw insertion hole 18b when the sub holder 18 is tilted, for example, an ellipse. May be.

  Further, as described above, the radius L2 of the edge portion 18f is smaller than the distance L1 between the optical axis X and the center of the screw insertion hole 18b. For this reason, the edge 18f of the contact portion 18a contacts the main holder 14 at a position closer to the optical axis X of the lens than the screw insertion hole 18b when the sub holder 18 is tilted. Therefore, for example, the inclination of the image sensor 28 with respect to the amount of rotation of the adjustment screw 32 can be increased, and the inclination of the image sensor 28 can be quickly adjusted, compared to the case where the distance from the optical axis X is longer than L1. It becomes possible. Further, the amount of movement of the image sensor 28 in the front-rear direction of the apparatus when adjusting the tilt can be suppressed.

  The sub holder 18 is formed of resin. A molding jig (mold) is used for molding the sub-holder 18. By reducing the radius L2 of the edge portion 18f of the contact portion 18a in this way, it becomes easy to separate and configure only the portion of the forming jig for forming the contact portion 18a as a so-called “piece”. . In the present embodiment, the piece that forms the contact portion 18a is separated from the other portions, so that the piece can be exchanged or its position can be changed. Thus, the sub-holder 18 has a portion where the contact portion 18a is molded in order to adjust the assumed inclination amount of the support portion 18g when pressed against the main holder 14, that is, the assumed inclination amount of the imaging surface of the imaging device 28. Molded with a molding jig separated from the part. Specifically, a shape adjusting mechanism provided so that the shape of the contact portion 18a can be adjusted so as to change the inclination of the sub-holder 18 when contacting the main holder 14 is configured in the forming jig. Since a technique for exchanging a part of the forming jig or changing the position thereof is known, detailed description thereof will be omitted.

  FIG. 7 is a view of the image sensor attachment adjustment mechanism 40 in a state where the adjustment screw 32 is attached to another part of the image pickup device, as viewed from the rear of the apparatus. FIG. 7 shows a state in which the adjustment screw 32 is inserted and attached to the two screw insertion holes 24a on the lower right side and the lower left side of the device. When the adjustment screw 32 is attached in this way, the contact portion 18a of the sub-holder 18 contacts the contacted surface 14c at one point of the contact Q above the optical axis X.

  FIG. 8 is a view of the image sensor attachment adjustment mechanism 40 in a state where the adjustment screw 32 is attached to another part of the image pickup device as viewed from the rear of the apparatus. FIG. 8 shows a state in which the adjustment screw 32 is inserted and attached to the two screw insertion holes 24a on the upper side and the lower left side of the device. When the adjustment screw 32 is attached in this way, the contact portion 18a of the sub holder 18 contacts the contacted surface 14c at one point of the contact Q on the right side of the optical axis X.

  FIG. 9 is a view of the image sensor attachment adjusting mechanism 40 in a state where the adjustment screw 32 is attached to another part of the device as viewed from the rear side of the apparatus. FIG. 9 shows a state in which the adjustment screw 32 is inserted and attached to the two screw insertion holes 24a on the upper side and the lower right side of the device. When the adjustment screw 32 is attached in this way, the contact portion 18a of the sub-holder 18 contacts the contacted surface 14c at one point of the contact Q on the left side of the optical axis X.

  As described above, in the image sensor mounting adjustment mechanism 40 according to the present embodiment, the sub-holder unit 30 can be tilted and adjusted in any tilting direction using the two adjusting screws 32. In this embodiment, the adjustment screw 32 is restricted from moving forward by the outer surface 24b of the lid member 24. For example, the adjustment screw 32 can be provided by providing a locking portion (not shown) on the lid member 24. You may restrict | limit the movement to 32 apparatus back. This makes it possible to tilt the image sensor 28 in all tilt directions by simply attaching two adjustment screws 32 without changing the location where the adjustment screw 32 is attached in accordance with the tilt direction of the image sensor 28. .

  FIG. 10 is a flowchart illustrating a manufacturing process of the imaging device 10. The processing in this flowchart starts when the assembly of the image sensor attachment adjustment mechanism 40 in a state where the adjustment screw 32 is not attached is completed.

  The manufacturing worker tilts the imaging element 28 of the lens with a laser collimator or the like in a state where the entire surface of the contact portion 18a of the sub-holder 18 is in contact with the contacted surface 14c of the main holder 14 by the urging force of the leaf spring 22. Is measured (S10). The manufacturing operator confirms the inclination angle and the inclination direction of the image sensor 28 by looking at the measurement result, whereby the assumed inclination amount of the support portion 18 g when the sub holder 18 is pressed against the main holder 14, that is, the image sensor 28. The shape of the contact portion 18a is specified such that the assumed inclination amount of the imaging surface is zero (S12). In addition, when manufacturing a plurality of imaging devices 10, the manufacturing operator acquires the inclination angles of the plurality of imaging elements 28, and acquires the inclination angle of the imaging elements 28 in the lot, for example, by calculating an average value thereof. May be.

  As described above, the sub holder 18 is formed by the forming jig having the shape adjusting mechanism capable of adjusting the shape of the contact portion 18a so as to change the inclination of the sub holder 18 when it contacts the main holder 14. The manufacturing operator adjusts the shape adjusting mechanism of the forming jig so as to be formed in the shape of the contact portion 18a when the inclination angle of the image sensor 28 is less than a predetermined threshold angle (S14). The manufacturing worker may adjust the shape adjusting mechanism of the forming jig so that the shape of the contact portion 18a when the inclination angle of the image sensor 28 becomes zero is formed.

  When the adjustment of the shape adjusting mechanism is completed, the manufacturing operator forms the sub-holder 18 with the forming jig (S16). When the sub-holder 18 is formed in this way, the manufacturing operator carries the sub-holder 18 into the manufacturing line for manufacturing the imaging device 10 and the imaging device 28 produced in the same lot as the imaging device 28 whose inclination angle is measured. When manufacturing the mounted image pickup apparatus 10, the sub-holder 18 is attached to the main holder 14 (S18).

  FIG. 11 is a diagram showing the distribution of the inclination angle of the image sensor 28 when the shape of the contact portion 18a is not adjusted by the shape adjusting mechanism of the forming jig, and the distribution of the inclination angle of the image sensor 28 when adjusted. It is. In FIG. 11, the distribution when the shape of the contact portion 18a is not adjusted is indicated by D1, and the adjusted distribution is indicated by D2. In addition, the inclination angle of the image sensor 28 is θ. If the reference angle is θ1 and the absolute value of the tilt angle is equal to or less than θ1, it is not necessary to adjust the tilt angle of the image sensor 28 with the adjusting screw 32.

  In general, the image pickup element 28 has little variation in shape and inclination of the image pickup surface in the same lot. Therefore, the shape adjusting mechanism of the forming jig for forming the sub-holder 18 is adjusted according to the inclination angle of the image sensor 28 of the lot, and the shape of the contact portion 18a is adjusted in advance so as to reduce the inclination of the image sensor 28. By doing so, as shown by D2, the average value of the inclination angle of the image sensor 28 or the median value of the distribution can be brought close to zero degrees. As a result, the number N2 that needs to be adjusted for the tilt of the image sensor 28 can be significantly reduced from the number N1 that needs to be adjusted for the tilt of the image sensor 28 before the shape of the contact portion 18a is adjusted. For this reason, the man-hour of an adjustment operator can be suppressed and it becomes possible to reduce adjustment cost significantly.

  The present invention is not limited to the above-described embodiments, and an appropriate combination of the elements of each embodiment is also effective as an embodiment of the present invention. Various modifications such as design changes can be added to each embodiment based on the knowledge of those skilled in the art, and embodiments to which such modifications are added can also be included in the scope of the present invention. Here are some examples.

  In a modification, the shape adjusting mechanism of the forming jig is provided with an actuator (not shown) such as a motor for adjusting the shape of the contact portion 18a in advance so as to change the inclination of the image sensor 28. . Furthermore, a jig adjustment control unit (not shown) provided with a CPU, ROM, RAM and the like is connected to the actuator of the forming jig. The jig adjustment control unit is also connected to a measuring device such as the laser collimator described above, and acquires the measured tilt angle and tilt direction of the imaging surface of the image sensor 28 from the measuring device. At this time, the jig adjustment control unit may acquire the measured tilt angle and tilt direction of the imaging surface of the image sensor 28 for each of the plurality of image sensors 28 and acquire an average value thereof.

  The jig adjustment control unit uses the acquired tilt angle and tilt direction of the imaging surface so that the shape of the contact portion 18a is suppressed so that the tilt of the image sensor 28 is suppressed when the image sensor is pressed. Actuate the actuator to adjust the shape of the forming jig. As a result, the adjustment of the forming jig can be automated, and the number of adjustment steps of the forming jig can be suppressed.

It is a disassembled perspective view which shows the structure of the imaging device which concerns on this embodiment. It is the figure which looked at the subholder unit concerning this embodiment from the device back. It is sectional drawing of the image pick-up element attachment adjustment mechanism which concerns on this embodiment. FIG. 4 is an enlarged view of a region P in FIG. 3. (A) is sectional drawing of the image pick-up element attachment adjustment mechanism in the state in which the adjustment screw is not attached, (b) is an image pick-up element attachment adjustment mechanism in the state in which the adjustment screw is not attached in some places. It is the figure seen from the apparatus back. (A) is sectional drawing of the image pick-up element attachment adjustment mechanism in the state where the adjustment screw was attached to some places, (b) is the image pick-up element attachment of the state where the adjustment screws were attached to some places It is the figure which looked at the adjustment mechanism from the apparatus back. It is the figure which looked at the image pick-up element attachment adjustment mechanism in the state where the adjustment screw was attached to another one part location from the apparatus back. Furthermore, it is the figure which looked at the image pick-up element attachment adjustment mechanism in the state by which the adjustment screw was attached to another one part location from the apparatus back. Furthermore, it is the figure which looked at the image pick-up element attachment adjustment mechanism in the state by which the adjustment screw was attached to another one part location from the apparatus back. It is a flowchart which shows the manufacturing process of an imaging device. It is a figure which shows distribution of the inclination angle of an image pick-up element when the shape of the contact part is not adjusted with the shape adjustment mechanism of a shaping | molding jig, and distribution of the inclination angle of an image pick-up element when adjusted.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Imaging device, 12 Lens unit, 14 Main holder, 14a Opening surface, 14b Sub holder accommodating part, 14c Contacted surface, 16 Adjustment plate, 16a Female thread part, 18 Sub holder, 18a Contact part, 18b Screw insertion hole, 18f Edge, 20 substrate, 22 leaf spring, 24 lid member, 24a screw insertion hole, 24b outer surface, 26 mounting screw, 28 image sensor, 30 sub-holder unit, 32 adjustment screw, 40 image sensor mounting adjustment mechanism.

Claims (7)

A main holder to which the lens is fixed;
A sub-holder provided with a contact portion that supports the image sensor and is to contact the main holder;
A pressing means for pressing the sub-holder against the main holder so as to bring the abutting portion into contact with the main holder;
By adjusting the distance in the optical axis direction between the main holder and the portion to be adjusted out of the optical axis of the lens among the sub holders, the sub holder is tilted about a part of the contact portion as a fulcrum. Tilt adjusting means for adjusting the tilt of the image sensor with respect to the optical axis;
With
The image sensor mounting adjustment mechanism, wherein the sub-holder is provided so as to tilt at a fulcrum at a position closer to the optical axis than the adjusted portion when adjusting the tilt of the image sensor.   The said contact part is formed so that it may contact | abut to the said main holder in one point near the said optical axis rather than the said to-be-adjusted part, when the said subholder is inclined. Image sensor mounting adjustment mechanism.   The contact portion has a circular edge portion through which the optical axis passes through the center when contacting the main holder, and contacts the main holder at one point of the edge portion when the sub holder is tilted. The imaging device mounting adjustment mechanism according to claim 1, wherein the imaging device mounting adjustment mechanism is formed.   The tilt adjusting means includes an adjusting screw that is screwed into one of the main holder and the sub holder and is restricted from relative movement in at least one of the axial directions with respect to the other, and the adjusting screw rotates. 3. The image sensor mounting adjustment mechanism according to claim 1, wherein a distance in the optical axis direction between the adjusted portion and the main holder is adjusted. A lens,
A main holder to which the lens is fixed;
An image sensor;
A sub-holder that supports the image sensor and is provided with a contact portion that should contact the main holder;
A pressing means for pressing the sub-holder against the main holder so as to bring the abutting portion into contact with the main holder;
The image pickup device with respect to the optical axis is tilted with the part of the contact portion as a fulcrum, by adjusting the distance between the adjusted portion of the sub holder that is off the optical axis of the lens and the main holder. An inclination adjusting means for adjusting the inclination of the
With
The image pickup apparatus according to claim 1, wherein the contact portion is provided to contact the main holder at a portion closer to the optical axis than the adjusted portion. A lens,
A main holder to which the lens is fixed;
An image sensor;
A support portion that supports the imaging element, a sub-holder provided with a contact portion that should contact the main holder,
A pressing means for pressing the abutting portion against the main holder to abut the main holder;
With
The sub-holder is formed by a forming jig in which a portion for forming the contact portion is separated from other portions in order to adjust an assumed inclination amount of the support portion when pressed against the main holder. An imaging apparatus characterized by that. The imaging with respect to the optical axis of the lens in a state where the imaging surface of the imaging device is tilted with respect to the mounting reference surface or the contact portion of the first sub-holder that supports the imaging device is pressed against the main holder to which the lens is fixed Measuring the tilt of the element;
Identifying the shape of the contact portion to be formed in order to reduce the acquired inclination;
Adjusting the shape at the time of molding of the contact portion in the shape adjusting mechanism provided in the forming jig formed with the first sub-holder so as to be formed in the shape of the specified contact portion;
Attaching the second sub-holder that is molded by the molding jig whose shape at the time of molding of the contact portion is adjusted and supports the imaging device to the main holder;
An image pickup apparatus manufacturing method comprising:

Images