JP2014230118A - Tilt adjustment apparatus for imaging device and tilt adjustment method of imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tilt adjustment apparatus for an imaging device capable of performing high-accuracy tilt adjustment of the imaging device and improves a degree of freedom in the timing to mount the imaging device, and a tilt adjustment method.SOLUTION: The tilt adjustment of an imaging device is performed by using: a plurality of adjuster screws for changing a position of an abutment part in a direction of an optical axis in accordance with adjustment of a threading amount to a base member supporting an imaging optical system; at least one adjustment member changing the position in the direction of the optical axis in accordance with the abutment part of the plurality of adjuster screws; a device support member supporting the imaging device and abutted to the abutment part of the adjuster screws to determine the position in the direction of the optical axis; and a fixing screw for fixing the device support member being abutted to the abutment of the adjuster screws against the adjustment member.

Description

  The present invention relates to an inclination adjustment device and an inclination adjustment method for an image sensor in an image pickup apparatus.

  In an imaging apparatus such as a digital still camera, when the light receiving surface of the imaging element is tilted with respect to the optical image plane of the photographing optical system, there is a problem that the image is blurred at a part of the screen. As a countermeasure, the optical image plane and the light receiving surface of the image sensor are matched by adjusting the eccentricity of the lens constituting the photographing optical system and adjusting the angle of the image sensor. Since the method of changing the eccentric position of the lens may affect the aberration as a result of adjustment, it is preferable to adjust the inclination of the image sensor with respect to the optical image plane in consideration of optical performance.

  Various devices for adjusting the tilt of the image sensor have been proposed, and examples thereof are shown in FIGS. A screw hole 62 is formed in the element mounting portion 61 of the housing 60 that supports the photographing optical system. The male screw formed in the shaft portion 63a of the adjusting screw 63 is screwed into the female screw formed in the screw hole 62. An element mounting plate 64 that supports the imaging element is inserted between the head 63b of the adjusting screw 63 and the element mounting portion 61, and the element mounting plate 64 is pressed against the head 63b by the urging force of the compression spring 65. . As shown in FIG. 15, the position of the head 63b is changed by changing the screwing amount of the shaft 63a of the adjusting screw 63 with respect to the screw hole 62, and the element in contact with the head 63b is changed accordingly. The position of the mounting plate 64 in the optical axis direction changes. A plurality of adjustment screws 63 are provided, and when the position of the head 63b of each adjustment screw 63 is relatively changed, the inclination of the element mounting plate 64 changes. In general, three adjustment screws 63 are used to perform inclination adjustment with a high degree of freedom. After the tilt adjustment is completed, the element mounting plate 64 is fixed to the casing 60 by a technique such as adhesion or caulking. Further, the head of the adjustment screw 63 may be bonded to the element mounting plate 64 to stop rotation. In place of the adjustment screw 63, the same inclination adjustment can be performed by using a cam member formed with a contact portion with the element mounting plate 64 as a cam surface.

  FIGS. 16 and 17 show different examples of the image sensor tilt adjustment device. A spacer 75 is inserted between the element mounting portion 71 and the element mounting plate 74 of the housing 70 that supports the photographing optical system, and a fixing screw 73 is fixed to the female screw formed in the screw hole 72 of the housing 70. The male screw formed on the shaft portion 73a is screwed. When the fixing screw 73 is tightened, the element mounting plate 74 is sandwiched between the head 73 b and the spacer 75. When the spacer 75 has a different thickness, the position of the element mounting plate 64 in the optical axis direction changes. A plurality of (for example, three) spacers 75 are provided at different positions. When the thicknesses of the spacers 75 are relatively different, the inclination of the element mounting plate 74 changes.

Japanese Patent Laid-Open No. 2001-218102

  In recent years, production modes and parts distribution of imaging devices have been diversified. However, in the tilt adjusting apparatus of the type shown in FIGS. 14 and 15, since the tilt adjustment of the image sensor and the resolution inspection process are required after the element mounting plate 64 is assembled to the housing 60, the optical unit including the photographing optical system is required. The supplier ships the optical unit (housing 60) without the image sensor, and the manufacturer that performs final assembly of the image pickup apparatus attaches the image sensor (element mounting plate 64) to the optical unit. There wasn't. Specifically, in the configuration of FIGS. 14 and 15, there is a risk of displacement when the element mounting plate 64 and the adjustment screw 63 are fixed by adhesion or caulking. It is necessary to consistently manage until the fixing is completed, and the attachment timing of the element attachment plate 64 cannot be freely selected. In addition, after the element mounting plate 64 is fixed to the housing 60 by bonding or caulking, disassembly is difficult, so that there is a problem that maintenance takes time and parts to be replaced increase.

  16 and 17, the optical unit is shipped after the spacer 75 is attached, and the element attachment plate 74 is attached by the fixing screw 73 even if the element attachment plate 74 is attached thereafter. It can be fixed with high accuracy. Further, the fixing using the fixing screw 73 makes it easy to remove the element mounting plate 74 from the housing 70. On the other hand, the tilt adjustment of the image sensor is stepwise depending on the thickness of the spacer 75, so that there is a problem that stepless and highly accurate tilt adjustment cannot be performed. Further, depending on the material of the spacer 75, there is a possibility that distortion is caused by the tightening torque by the fixing screw 73, and the position accuracy of the element mounting plate 74 is affected.

  In order to solve the above problems, the present invention provides an image sensor tilt adjustment apparatus and tilt adjustment method capable of highly accurate tilt adjustment of an image sensor and having a high degree of freedom in timing for mounting the image sensor. With the goal.

  An image sensor tilt adjusting device according to the present invention includes a base member that supports an imaging optical system; a screw portion that is screwed and supported by the base member, and an optical axis direction position that is adjusted according to the screwing amount adjustment of the screw portion with respect to the base member. A plurality of adjustment screws having a contact portion to be changed; at least one adjustment member whose position in the optical axis direction changes according to the contact portions of the plurality of adjustment screws; And an element support member whose position in the optical axis direction is determined by abutting on the portion; and a fixing screw for fixing the element support member in contact with the contact portion of the adjustment screw to the adjustment member. .

  The contact portion of the adjustment screw has a larger diameter head than the screw portion, the adjustment member abuts on the side of the adjustment screw head where the screw portion protrudes, and the screw portion of the adjustment screw head portion It is preferable that the element support plate is in contact with the side opposite to the protruding side.

  It is preferable that a through hole is formed in the element support member, a screw hole is formed in the adjustment member, and the fixing screw is inserted into the through hole of the element support member and screwed into the screw hole of the adjustment member.

  Either a form having a plurality of adjustment members that individually abut against the contact parts of the plurality of adjustment screws, or a form having an integral-shaped adjustment member that abuts against all the contact parts of the plurality of adjustment screws It is also possible to do.

  It is practical to use three adjustment screws to perform tilt adjustment with a high degree of freedom.

  According to the tilt adjustment method of the image sensor of the present invention, a plurality of adjustment screws are screwed to and supported by a base member that supports the imaging optical system, and an optical axis position is provided by a contact portion provided on each of the plurality of adjustment screws. A step of assembling at least one adjustment member, a step of adjusting the optical axis direction positions of the plurality of adjustment screws, and an element support member for supporting the image sensor being brought into contact with the contact portions of the plurality of adjustment screws A step of determining the position in the optical axis direction; and a step of fixing the element support member to the adjustment member with a fixing screw.

  In the image sensor tilt adjusting apparatus and the adjustment method according to the present invention, an adjustment member whose position in the optical axis direction changes in accordance with the adjustment screw is provided, and the element mounting plate that supports the image sensor is brought into contact with the adjustment screw and the adjustment member Fix with a fixing screw. This makes it possible to easily and accurately fix the element mounting plate at the stage of mounting the element mounting plate without fear of misalignment while performing stepless tilt adjustment using the adjusting screw. The element mounting plate can be attached at any later timing.

1 is a front perspective view of a lens barrel on which an image sensor adjusted by an inclination adjustment device and an inclination adjustment method to which the present invention is applied is mounted. It is a rear perspective view of the lens barrel. It is the figure which looked at the same lens barrel from the image plane side. FIG. 5 is a rear perspective view showing a state in which the adjustment member and the adjustment screw are attached to the base member of the lens barrel in the inclination adjustment device and the inclination adjustment method of the first embodiment. It is a back perspective view which shows the state which assembled | attached the element attachment board further using the fixing screw from the state of FIG. FIG. 6 is an exploded perspective view of the adjustment member, adjustment screw, element mounting plate, and fixing screw shown in FIGS. 4 and 5. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. FIG. 9 is a cross-sectional view of a state in which the screwing amount of the adjustment screw to the base member is larger than that of FIG. It is a back perspective view which shows the state which attached the adjustment member and the adjustment screw to the base member of the lens-barrel with the inclination adjustment apparatus and inclination adjustment method of 2nd Embodiment. It is a back perspective view which shows the state which assembled | attached the element attachment plate further using the fixing screw from the state of FIG. FIG. 12 is an exploded perspective view of the adjustment member, adjustment screw, element mounting plate, and fixing screw shown in FIGS. 10 and 11. It is sectional drawing which follows the CC line of FIG. It is sectional drawing which shows the inclination adjustment apparatus of the conventional image pick-up element. It is sectional drawing which shows the state which performed inclination adjustment with the inclination adjustment apparatus of FIG. It is sectional drawing which shows the inclination adjustment apparatus of the conventional image pick-up element. FIG. 17 is a cross-sectional view illustrating a state in which the element mounting plate is removed while leaving the spacer in the tilt adjusting device of FIG. 16.

  A lens barrel 10 shown in FIGS. 1 to 3 has a multi-stage advance-and-retract cylinder portion 14 inside a stationary ring 12 and is supported by a photographing optical system 13 including a plurality of lens groups and the like in the advance-and-retract cylinder portion 14. Has been. In FIG. 1, the most object (object) side lens constituting the photographing optical system 13 appears. The advancing / retracting cylinder portion 14 is operated by the driving force of the lens barrel drive motor 15 between the extended state where it is extended from the fixed ring 12 and the retracted state where it is retracted into the fixed ring 12 as shown in FIGS. Can do. In the following description, the direction along the optical axis O (FIG. 1) of the photographing optical system 13 is referred to as the optical axis direction, the subject (object) side is the front in the optical axis direction, and the imaging plane side is the rear in the optical axis direction. To do.

  A base member 16 is attached to the rear portion of the stationary ring 12. The base member 16 has an opening 16a behind the optical path of the photographing optical system 13, and an optical filter 18 such as a low-pass filter is held in the opening 16a. As shown in FIGS. 2 and 3, an image sensor mounting portion 20 is formed on the rear surface side of the base member 16. The imaging element mounting portion 20 has an element insertion space 20a located behind the opening 16a and a support step 20b formed around the element insertion space 20a. The element insertion space 20a and the support step 20b are recesses that are opened rearward. The support step portion 20b has two recesses 20c on the upper side and one recess 20c on the lower side across the element insertion space 20a. Each recess 20c has a shape into which an adjustment member 22 described later is fitted, and a rotation prevention groove 20d for regulating the rotation of the adjustment member 22 is formed in the recess 20c (FIGS. 4 and 5). An adjustment screw hole 20e is formed at the position corresponding to each recess 20c in the support step portion 20b, and an internal screw is formed on the inner surface and the axis is directed in the optical axis direction (FIGS. 2, 3, 7 to 9). ). A positioning projection 20f is provided around the element insertion space 20a so as to project rearward in the optical axis direction.

  As shown in FIGS. 4 and 7 to 9, the adjustment member 22 is attached to the image sensor attachment portion 20 using an adjustment screw 24. The adjustment member 22 is a plate-like member having an outer shape that fits into the recess 20c of the image sensor mounting portion 20, and three adjustment members 22 are disposed corresponding to the three recesses 20c. As shown in FIG. 6, each adjustment member 22 has a through hole 22a and a fixing screw hole 22b formed therethrough, and a detent protrusion 22c projects in the outer diameter direction centering on the through hole 22a. A female screw is formed on the inner surface of the fixed screw hole 22b. The adjustment member 22 is thicker in the portion where the fixed screw hole 22b is formed than in the portion where the through hole 22a is formed.

  Three adjustment screws 24 corresponding to the three adjustment members 22 are provided. Each adjustment screw 24 has a shaft portion 24a having a male screw formed on the outer surface, and a head portion (abutting portion) 24b having a diameter larger than that of the shaft portion 24a. The head portion 24b includes a shaft portion 24a. A front abutting surface 24c facing the projecting direction and a rear abutting surface 24d facing the opposite side of the projecting direction of the shaft portion 24a are formed. The front contact surface 24c is a plane that is substantially perpendicular to the axis of the shaft portion 24a. The rear abutting surface 24d is configured by a plane that is substantially perpendicular to the axis of the shaft portion 24a and a chamfered portion having a gently curved cross section at the periphery thereof. A square hole 24e is formed in the center of the rear abutting surface 24d to engage with a tool for rotating operation.

  As shown in FIG. 4, each of the three adjustment members 22 is inserted and supported in the recess 20c by engaging the rotation prevention protrusion 22c with the rotation prevention groove 20d. In this state, the rotation of the adjustment member 22 relative to the base member 16 is restricted by the engagement of the rotation prevention protrusion 22c and the rotation prevention groove 20d. The three adjustment members 22 and the three recesses 20c have a common specification (shape), and any adjustment member 22 can be assembled to any of the three recesses 20c. The shaft portion 24a of the adjustment screw 24 is inserted into the through hole 22a of the adjustment member 22, and the shaft portion 24a is screwed into the adjustment screw hole 20e (FIG. 7). Since the head 24b of the adjustment screw 24 has a larger diameter than the through hole 22a, the front contact surface 24c faces the adjustment member 22 without entering the through hole 22a. In this state, the adjustment member 22 is restricted from being detached from the support step portion 20b in the optical axis rear direction by the head 24b of the adjustment screw 24, and comes into contact with the front contact surface 24c of the head 24b. The position in the optical axis direction is determined.

  In a state where the three adjustment members 22 and the three adjustment screws 24 are attached to the image pickup device attachment portion 20, as shown in FIG. 5 and FIG. A plate (element support member) 28 is fixed. The image sensor 32 is supported on the front side of the element mounting plate 28 (FIGS. 5 and 6). The imaging element 32 is a known image sensor that photoelectrically converts subject light received on the light receiving surface to generate an image signal. The imaging element 32 is installed in the element insertion space 20 a with the element mounting plate 28 attached to the adjustment member 22. Enters. As shown in FIG. 6, in the element mounting plate 28, three through holes 28a are formed at positions corresponding to the through holes 22a of the three adjusting members 22, and three through holes are formed at positions corresponding to the fixed screw holes 22b. 28b is formed. A positioning hole 28c is formed at a position corresponding to the positioning protrusion 20f of the base member 16.

  Each of the three fixing screws 30 has a shaft portion 30a having a male screw formed on the outer surface, and a head portion 30b having a diameter larger than that of the shaft portion 30a. It is a screw. A cross groove 30c is formed at the center of the head 30b to engage with a tool for rotating operation. The through hole 28b of the element mounting plate 28 is subjected to countersink processing corresponding to the seating surface of the head 30b of the fixing screw 30.

  The element mounting plate 28 is positioned so that the three through holes 28b overlap the fixing screw holes 22b of the three adjusting members 22 by engaging the positioning holes 28c with the positioning protrusions 20f. As shown in FIG. 8, the position of the element mounting plate 28 in the optical axis direction is determined by coming into contact with the rear contact surface 24d of each adjustment screw 24. Further, the shaft portion 30a of each fixed screw 30 is inserted into the through hole 28b and screwed into the fixed screw hole 22b, so that the head 24b of the adjustment screw 24 is sandwiched between the three adjustment members 22. On the other hand, the element mounting plate 28 is fixedly supported. Since the rotation of the adjustment member 22 is restricted by the engagement between the rotation prevention protrusion 22c and the rotation prevention groove 20d, each adjustment member 22 does not rotate when the fixing screw 30 is rotated. As shown in FIG. 5, the square holes 24 e of the three adjusting screws 24 are exposed through the three through holes 28 a in a state where the element mounting plate 28 is fixed to the adjusting member 22.

  In the above-described support structure of the image sensor, the heads 24b (rear contact surfaces 24d) of the three adjustment screws 24 serve as a reference for determining the position in the optical axis direction of the element mounting plate 28 (image sensor 32). Therefore, if the screwing amounts of the three adjustment screws 24 to the adjustment screw holes 20e of the base member 16 are individually changed to change the positions of the three heads 24b in the optical axis direction relatively, the light of the photographing optical system 13 is changed. The inclination of the element mounting plate 28 with respect to the axis O can be changed.

  FIG. 9 shows a state in which the screwing amount of the specific adjustment screw 24 is changed with respect to the adjustment screw hole 20e, and the position of the head 24b is moved forward in the optical axis direction. In this state, not only the position of the head 24b in the optical axis direction is changed, but also the position of the adjustment member 22 in contact with the front contact surface 24c changes in accordance with the change in position of the head 24b. doing. Then, when the element mounting plate 28 is fixed to the adjustment member 22 using the fixing screw 30, the element mounting plate 28 is maintained in a state where the inclination is changed. FIG. 9 shows the case where the head 24b of the adjusting screw 24 is moved forward in the optical axis direction. Similarly, when the head 24b is moved backward in the optical axis direction, the head 24b is also followed. When the position of the adjusting member 22 in the optical axis direction is changed and the element mounting plate 28 is fixed to the adjusting member 22 using the fixing screw 30, the inclination of the element mounting plate 28 changes in the opposite direction to FIG.

  In this way, the element mounting plate 28 positioned in the optical axis direction by the head 24b of the adjusting screw 24 is fixed to the adjusting member 22 that changes its position following the head 24b of the adjusting screw 24. Thereby, the freedom degree of the timing which attaches the element attachment board 28 becomes high. For example, in a state in which each adjustment member 22 and each adjustment screw 24 are assembled, three light receiving surfaces of the adjustment image pickup element configured under the same conditions as the image pickup element 32 are matched with the optical image plane of the photographing optical system 13. After adjusting the screwing amount of the adjusting screw 24, the lens barrel 10 can be shipped without attaching the image pickup device, and the device mounting plate 28 can be assembled later. In this case, the element mounting plate 28 comes into contact with the rear abutting surface 24d of the head 24b of each adjustment screw 24 and is fixed to each adjustment member 22 by using the fixing screw 30, so that the inclination is adjusted. Therefore, it is not necessary to adjust the inclination again at the stage of mounting the element mounting plate 28. Further, since the element mounting plate 28 and the adjusting member 22 are fastened together with the fixing screw 30 with the head 24b of the adjusting screw 24 sandwiched therebetween, there is no possibility of positional deviation when the element mounting plate 28 is fixed. The mounting plate 28 can be easily and accurately attached with the tilt adjusted. Further, the element mounting plate 28 can be easily removed simply by removing the fixing screw 30.

  As shown in FIG. 5, since the square holes 24e of the adjustment screws 24 are exposed through the three through holes 28a in a state where the element attachment plate 28 is attached, each adjustment screw is attached with the element attachment plate 28 attached. It is also possible to adjust the inclination of the image sensor 32 by rotating 24. Further, when a minute deformation (such as a crease or a burr) occurs around the edge of the square hole 24e during the adjustment work performed by rotating the adjustment screw 24, the through-hole 28a is formed, so that the adjustment screw 24 Interference between the deformed portion and the element mounting plate 28 can be prevented.

  10 to 13 show a second embodiment in which an adjustment member 122 having an integral structure is used in place of the three adjustment members 22 of the first embodiment described above. The imaging element mounting portion 120 of the base member 16 has a support step 120b (FIG. 13) formed around the element insertion space 120a. The support step 120b has three adjustment screw holes 120c (FIG. 13). Is formed. Two adjustment screw holes 120c are formed on the upper side and one on the left side of the element insertion space 120a when viewed from the rear in the optical axis direction. FIG. 13 shows two adjustment screw holes 120c on the upper side of the element insertion space 120a. It is shown. The image sensor mounting portion 120 is further provided with one positioning projection 120d on the upper side and the left side of the element insertion space 120a when viewed from the rear in the optical axis direction.

  The adjustment member 122 has an L shape extending along the upper side and the left side of the element insertion space 120a when viewed from the rear in the optical axis direction. In the adjustment member 122, three through holes 122a are formed at positions corresponding to the three adjustment screw holes 120c of the base member 16. One through hole 122a is formed in the vicinity of both ends of the L-shaped adjusting member 122 and in the vicinity of the intermediate bent portion. The adjustment member 122 further has two fixing screw holes 122b and two positioning holes 122c.

  The adjustment member 122 is supported by the base member 16 with the positioning protrusions 120d engaged with the two positioning holes 122c. As shown in FIG. 13, a compression spring 126 is inserted between the recess formed in the support step 120 b of the base member 16 and the adjustment member 122. Three compression springs 126 are provided at positions corresponding to the three through holes 122a of the adjustment member 122, and two compression springs 126 are shown in FIG.

  As shown in FIG. 10, the adjustment member 122 is held with respect to the image sensor mounting portion 120 using three adjustment screws 124. Similar to the adjustment screw 24 of the first embodiment, each adjustment screw 124 has a shaft portion 124a having a male screw formed on the outer surface and a head portion (abutting portion) 124b having a larger diameter than the shaft portion 124a. The head 124b is formed with a front abutting surface 124c facing the projecting direction of the shaft portion 124a and a rear abutting surface 124d facing the opposite side of the projecting direction of the shaft portion 124a. A square hole 124e is formed in the center of the rear abutting surface 124d to engage with a tool for rotating operation.

  As shown in FIG. 13, the shaft portion 124 a of each adjustment screw 124 is inserted into the through hole 122 a of the adjustment member 122 and the compression spring 126 and screwed into the adjustment screw hole 120 c of the base member 16. In this state, the front contact surface 124c of the head 124b of the adjustment screw 124 faces the adjustment member 122, and the position of the adjustment member 122 in the optical axis direction is determined by contacting the front contact surface 124c. The compression spring 126 urges the adjustment member 122 in a direction in which the adjustment member 122 comes into contact with the front contact surface 124c. When the screwing amounts of the three adjustment screws 124 to the adjustment screw holes 120c are individually changed, the positions of the heads 124b of the adjustment screws 124 in the optical axis direction change relatively, corresponding to the position changes of the heads 124b. Thus, the inclination of the adjustment member 122 that contacts the front contact surface 124c changes.

  The element mounting plate (element support member) 128 that supports the image pickup element 132 is in contact with the rear abutting surface 124d of the head 124b of each adjustment screw 124 to determine the position in the optical axis direction, and the two fixing screws 130. To be fixed to the adjusting member 122. Each fixing screw 130 includes a shaft portion 130a having a male screw formed on the outer surface, a head portion 130b having a diameter larger than that of the shaft portion 130a, and a cross formed at the center of the head portion 130b and engaged with a tool for rotating operation. And a groove 130c. In the element mounting plate 128, two positioning holes 128a are formed at positions corresponding to the two positioning protrusions 120d of the base member 16, and two through holes 128b are positioned at positions corresponding to the two fixing screw holes 122b of the adjustment member 122. Is formed. The position of the element mounting plate 128 in the optical axis direction is determined by bringing the positioning protrusions 120d into engagement with the positioning holes 128a and bringing them into contact with the rear contact surfaces 124d of the three adjusting screws 124. Furthermore, the element mounting plate 128 is inserted by inserting the shaft portion 130a of each fixing screw 130 into each through hole 128b of the element mounting plate 128, screwing the shaft portion 130a into the fixing screw hole 122b of the adjusting member 122, and tightening. Is fixed.

  With the above configuration, the inclination of the element mounting plate 128 can be adjusted by changing the screwing amount of the three adjusting screws 124. As in the first embodiment, the adjustment member 122 and each adjustment screw 124 are assembled and the inclination is adjusted by the adjustment screw 124, so that the inclination adjustment has been easily and reliably performed at the stage of attaching the element attachment plate 128. The element mounting plate 128 can be fixed in the state.

  As mentioned above, although demonstrated based on illustration embodiment, this invention is not limited to illustration embodiment. For example, in the adjustment screws 24 and 124 of each embodiment, the rear contact surface 24d with which the element mounting plates 28 and 128 abut is made flat except for the chamfered portion on the periphery. It is also possible to make the contact portions of the plates 28 and 128 spherical.

  Further, the number of adjusting screws 24 and 124 is preferably three from the viewpoint of performing a tilt adjustment with a high degree of freedom with a simple configuration, but may be a number other than three. The number of fixing screws 30 and 130 can also be different from those in the illustrated embodiment.

  The compression spring 126 inserted between the adjustment member 122 and the image sensor mounting portion 120 in the second embodiment can be disposed between the adjustment member 22 and the image sensor mounting portion 20 of the first embodiment. . Conversely, the compression spring 126 can be omitted in the second embodiment.

DESCRIPTION OF SYMBOLS 10 Lens barrel 12 Fixed ring 14 Advancing / retracting cylinder part 16 Base member 20 120 Imaging element attaching part 20a 120a Element insertion space 20b 120b Supporting step part 20c Recess 20d Non-rotating groove 20e 120c Adjustment screw hole 20f 120d Positioning protrusion 22 122 Adjustment member 22a 122a Through-hole 22b 122b Fixed screw hole 22c Non-rotating protrusion 24 124 Adjustment screw 24a 124a Shaft portion 24b 124b Head (applied portion)
24c 124c Front contact surface 24d 124d Back contact surface 24e 124e Square hole 28 128 Element mounting plate (element support member)
28a 28b 128b Through hole 28c 128a Positioning hole 30 130 Fixing screw 30a 130a Shaft 30b 130b Head 32 132 Image sensor 122c Positioning hole 126 Compression spring

Claims (7)

A base member for supporting the imaging optical system;
A plurality of adjustment screws having a screw portion screwed and supported by the base member and an abutting portion that changes a position in the optical axis direction in accordance with the screwing amount adjustment of the screw portion with respect to the base member;
At least one adjustment member whose position in the optical axis direction changes in accordance with the contact portions of the plurality of adjustment screws;
An element support member that supports the imaging element and abuts against the abutting portions of the plurality of adjustment screws to determine the position in the optical axis direction; and the element support member that abuts against the abutting portions of the adjustment screws. A fixing screw fixed to the adjusting member;
A tilt adjustment device for an image sensor, comprising: 2. The tilt adjustment device for an image pickup device according to claim 1, wherein the contact portion of the adjustment screw is a head having a diameter larger than that of the screw portion, and the adjustment member is the screw of the head of the adjustment screw. An image sensor inclination adjusting device that contacts the side from which the screw protrudes, and the element support plate contacts the opposite side of the head of the adjustment screw from the side from which the screw portion protrudes. 3. The tilt adjustment device for an image sensor according to claim 1, wherein a through hole is formed in the element support member, a screw hole is formed in the adjustment member, and the fixing screw is formed in the through hole of the element support member. An inclination adjustment device for an image sensor that is inserted and screwed into the screw hole of the adjustment member. 4. The tilt adjustment device for an image sensor according to claim 1, wherein the tilt adjustment device for the image sensor has a plurality of the adjustment members that individually contact the contact portions of the plurality of adjustment screws. 5. . 4. The tilt adjustment device for an image sensor according to claim 1, wherein the image sensor has the integral adjustment member that comes into contact with all the abutting portions of the plurality of adjustment screws. 5. apparatus. 6. The image sensor tilt adjusting apparatus according to claim 1, wherein the image sensor tilt adjusting apparatus has the three adjusting screws. A step of screwing and supporting a plurality of adjustment screws to a base member that supports the imaging optical system, and assembling at least one adjustment member whose position in the optical axis direction is determined by a contact portion provided on each of the plurality of adjustment screws When;
Adjusting the position of the plurality of adjusting screws in the optical axis direction;
Determining an optical axis direction position by bringing an element support member supporting an image sensor into contact with the abutting portions of the plurality of adjustment screws;
Fixing the element support member to the adjustment member with a fixing screw;
A tilt adjustment method for an image sensor, comprising:

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