CN209767729U - Camera focal plane electric adjusting assembly and device - Google Patents
Camera focal plane electric adjusting assembly and device Download PDFInfo
- Publication number
- CN209767729U CN209767729U CN201920350437.6U CN201920350437U CN209767729U CN 209767729 U CN209767729 U CN 209767729U CN 201920350437 U CN201920350437 U CN 201920350437U CN 209767729 U CN209767729 U CN 209767729U
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- Prior art keywords
- focal plane
- piezoelectric actuator
- printed board
- camera focal
- sensor
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
Abstract
The utility model provides an electric adjustment and calibration component and a device for a camera focal plane, wherein the component comprises a body, and is characterized by comprising a body front cover (101), an image sensor (102), a sensor printed board (103) and a piezoelectric actuator (104); the base end of the piezoelectric actuator (104) is arranged on the front cover (101) of the machine body; the sensor printed board (103) is connected to the piezoelectric actuator (104), and a displacement direction of the piezoelectric actuator (104) is perpendicular to the sensor printed board (103). Use the utility model discloses electronic timing subassembly of camera focal plane and device improves the manual timing mode of camera focal plane, has added piezoelectric actuator between sensor printing board and fuselage protecgulum, because the super high displacement precision of piezoelectric actuator makes the timing of whole camera focal plane reach high precision, makes the camera focal plane obtain the precision calibration.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a camera timing technical field especially relates to an electronic timing subassembly of camera focal plane and device.
[ background of the invention ]
In the design and production process of the camera, the adjustment of the focal plane is an indispensable key link. The ideal position of the focal plane should be at the focal point of the lens, meet the flange distance required by the standard, and be perpendicular to the optical axis. In actual design and production process, the sensor of installing the focal plane welds on the printed board, and the printed board is installed on the shell structure, because the restriction of technology, there is the difference in the installation each point for some installation points can't satisfy standard flange apart from the requirement, and the focal plane often can't accurate perpendicular to optical axis, thereby causes the camera partial region of image when formation of image to close the burnt and partial region out of focus's problem.
In order to solve this problem, it is common to add an elastic pad between the printed board and the mounting surface of the housing structure, and when the focal plane is not perpendicular to the optical axis as found by the test, the distance between the mounting points is changed by loosening the mounting screw under the action of the elastic pad. By adjusting the mounting screws (generally 4 screws) on the whole printed board for multiple times, the focal plane finally meets the requirement of standard flange distance, and the result that the focal plane is perpendicular to the optical axis is achieved. However, the method completely depends on manual operation of a debugging worker, the debugging precision is low, the mounting screw is not firmly fixed after the debugging is completed, the focal plane position is easily changed again in the subsequent use process, and the reliability of the product is greatly influenced.
[ Utility model ] content
The utility model aims to solve the technical problem that an electronic timing device of camera focal plane is provided, the manual timing mode of camera focal plane has been improved, has added piezoelectric actuator between sensor printing board and fuselage protecgulum, because the super high displacement precision of piezoelectric actuator, makes the timing of whole camera focal plane reach high precision, makes the camera focal plane obtain the precision calibration.
In order to solve the above technical problem, in one aspect, an embodiment of the present invention provides an electric adjustment and calibration assembly for a focal plane of a camera, including a body, a front cover of the body, an image sensor, a sensor printed board, and a piezoelectric actuator; the base end of the piezoelectric actuator is arranged on the front cover of the machine body; the sensor printed board is connected to the piezoelectric actuator, and a displacement direction of the piezoelectric actuator is perpendicular to the sensor printed board.
Preferably, a connection block is provided between the sensor printed board and the piezoelectric actuator, the connection block being used to connect the sensor printed board and the piezoelectric actuator.
Preferably, the connecting block is mounted on a displacement end face of the piezoelectric actuator.
Preferably, through holes are formed at four corners of the sensor printed board.
Preferably, the sensor printed board further comprises a screw for fixing the sensor printed board on the connection block.
Preferably, the through hole is used for fixing the sensor printed board.
Preferably, the sensor printed board is used for mounting the image sensor.
Preferably, the piezoelectric actuator is a stack type piezoelectric actuator.
Preferably, the thickness of the image sensor is 1-5 mm.
On the other hand, an embodiment of the utility model provides an electronic timing device of camera focal plane, the device includes above-mentioned subassembly.
Compared with the prior art, the technical scheme has the following advantages: the manual adjustment and calibration mode of the camera focal plane is improved, the piezoelectric actuator is added between the sensor printed board and the front cover of the camera body, and due to the ultrahigh displacement precision of the piezoelectric actuator, the adjustment and calibration of the whole camera focal plane reach extremely high precision, so that the camera focal plane is precisely calibrated.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a structural diagram of the camera focal plane electric adjusting assembly of the present invention.
Fig. 2 is a structural diagram of the camera focal plane electric adjusting module driving voltage when it is zero voltage.
Fig. 3 is a structural diagram of the camera focal plane for electrically adjusting the driving voltage of a component to the maximum voltage.
Fig. 4 is the structure diagram of the camera focal plane when the flange distance of the component is not enough.
Fig. 5 is the structure view of the camera focal plane for electrically adjusting the distance between the flanges of a component.
Fig. 6 is a structural diagram of another assembly for electrically adjusting the focal plane of the camera according to the present invention.
Fig. 7 is a structural diagram of the camera focal plane for electrically adjusting the driving voltage of another component to be zero.
Fig. 8 is a structural diagram of the camera focal plane for electrically adjusting the driving voltage of another component to the maximum voltage.
Fig. 9 is a structural diagram of the camera focal plane when the flange distance of another component of the camera focal plane is insufficient.
Fig. 10 is a structural diagram of the camera focal plane for electrically adjusting the distance between the flanges of the other module.
In the figure, 101-fuselage front cover; 102-an image sensor in the body; 103-a sensor printed board; 104-a piezoelectric actuator; 105-a connecting block; 106-screw.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
Fig. 1 is a structural diagram of the camera focal plane electric adjusting assembly of the present invention. The camera focal plane electric adjusting component comprises a body, a body front cover 101, an image sensor 102, a sensor printed board 103 and a piezoelectric actuator 104; the base end of the piezoelectric actuator 104 is mounted on the front body cover 101 and is tightly connected with the front body cover 101; the sensor printed board 103 is connected to the piezoelectric actuator 104, and the displacement direction of the piezoelectric actuator 104 is perpendicular to the sensor printed board 103. The sensor printed board 103 is used to mount the image sensor 102. The sensor board thickness 103 may be set to 0.5 to 3mm, 2mm in the present embodiment.
The working principle is as follows: the printed board 103 on which the image sensor 102 is mounted is connected and fixed to one end of the piezoelectric actuators 104, and the other end of each piezoelectric actuator 104 is fixed to the camera focal plane housing structure. When a voltage is applied to the piezoelectric actuator 104, the length of the piezoelectric actuator 104 changes, and the position of the spot sensor printed board 103 changes. By applying different voltages to the respective piezoelectric actuators 104, the sensor printed board 103 can be changed in a wide angle range, thereby performing a function of adjusting the focal plane position.
And the utility model discloses the electronic timing of camera burnt face an assembly structure is corresponding, discloses one the utility model discloses the electronic timing device of camera burnt face. The electronic timing device of camera focal plane includes: the image sensor includes a body, a body front cover 101, an image sensor 102, a sensor printed board 103, and four piezoelectric actuators 104 provided at four corners of the sensor printed board 103.
After the whole device is assembled, the following conditions are met: when the driving voltage of the piezoelectric actuator 104 is zero, the flange distance (the distance from the front cover lens interface to the focal plane) is slightly smaller than the flange distance required by the standard; when the driving voltage of the piezoelectric actuator 104 is the maximum voltage, the flange distance thereof should be slightly larger than the flange distance required by the standard, so that each adjusting point can be adjusted to the position required by the standard by adjusting the voltage. As shown in fig. 2 and fig. 3, fig. 2 is a structural diagram of the camera focal plane electric adjustment module driving voltage of the present invention when it is zero voltage. Fig. 3 is a structural diagram of the camera focal plane for electrically adjusting the driving voltage of a component to the maximum voltage.
The working process is as follows:
1. When focal plane alignment is started, the same driving voltage is applied to the four piezoelectric actuators 104 at the four mounting corners, so that the four piezoelectric actuators 104 generate the same displacement, and the image sensor 102 and the sensor printed board 103 are translated synchronously.
2. Selecting a mounting angle to measure whether the flange distance of the position meets the flange distance required by the standard, and if the flange distance of the position is found to be smaller than the flange distance required by the standard through measurement, increasing the driving voltage of the piezoelectric actuator 104 of the mounting angle to reduce the flange distance of the position; if the measurement finds that the flange distance of the position is larger than the flange distance required by the standard, the driving voltage of the piezoelectric actuator 104 of the installation angle is reduced, so that the flange distance of the position is increased, as shown in fig. 4 and 5. Fig. 4 is the structure diagram of the camera focal plane when the flange distance of the component is not enough. Fig. 5 is the structure view of the camera focal plane for electrically adjusting the distance between the flanges of a component. And repeatedly adjusting until the flange distance of the mounting angle meets the standard requirement.
3. And (3) adjusting all the rest installation angles in the step (2), and adjusting the flange distance of each installation angle position to a position required by the standard.
4. And measuring the flange distance of each mounting angle position again, and finely adjusting the piezoelectric actuators of partial mounting angles until the flange distances of all the mounting angle positions meet the standard requirement.
The thickness range of the front cover 101 of the body can be set to be 5-60 mm. In this embodiment, the thickness of the front body cover 101 is set to 10mm, the lens interface on the front body cover 101 is a C-port, and the standard flange distance is 17.526 mm. The piezoelectric actuator 104 is a stacked piezoelectric actuator, and is shaped like a rectangular parallelepiped, and has a zero voltage length of 5mm, a range of 0-50 μm, a driving voltage of 0-50V, and a precision of 0.1 μm. The thickness of the image sensor 102 is 1-5 mm, and is set to 2.5mm here. The flange distance under zero voltage is 17.5mm, the flange distance under maximum voltage is 17.55mm, and the interval range is satisfied.
All piezoelectric actuators are loaded with a 20V drive voltage and the piezoelectric actuator 104 increases in length by 20 μm. The flange distance of a certain installation angle position is measured, wherein the flange distance is 17.523mm and is smaller than the standard flange distance of 17.526 mm. At this time, the driving voltage of the piezoelectric actuator 104 at the installation angle position is increased to 22V, and the length of the piezoelectric actuator 104 is increased again. The flange distance at the position is measured to be 17.526mm, and the standard requirement is met. The flange distance of the other installation angle position is measured, and the flange distance is 17.528mm and is larger than the standard flange distance of 17.526 mm. The piezoelectric actuator 104 at this mounting angle position is reduced in driving voltage to 18V, and the length of the piezoelectric actuator 104 is reduced. The flange distance at the position is measured to be 17.526mm, and the standard requirement is met. Thus, the piezoelectric actuators 104 at each mounting angle were adjusted to have a flange pitch of 17.526 mm.
After the piezoelectric actuator 104 of each mounting angle is adjusted, the flange distance of some mounting angles may be changed due to mechanical reasons, if the flange distance of a certain mounting angle is changed to 17.525mm, the piezoelectric actuator 104 of the mounting angle is adjusted to be adjusted to 17.526mm by increasing the voltage by 1V.
Example two
Fig. 6 is a structural diagram of another assembly for electrically adjusting the focal plane of the camera according to the present invention. The camera focal plane electric adjusting component comprises a front cover 101 of a machine body, an image sensor 102, a sensor printed board 103, a piezoelectric actuator 104 and a connecting block 105; a sensor printed board 103 for mounting the image sensor 102, and a base end of the piezoelectric actuator 104 is mounted on the body front cover 101; the connecting block 105 is mounted on the displacement end face of the piezoelectric actuator 104; the sensor printed board 103 is connected to the connection block 105; the displacement direction of the piezoelectric actuator 104 is perpendicular to the sensor printed board 103. A connection block 105 is provided between the sensor printed board 103 and the piezoelectric actuator 104, and the connection block 105 is used to connect the sensor printed board 103 and the piezoelectric actuator 104. The connection block 105 is mounted on the displacement end face of the piezoelectric actuator 104. Through holes are formed at four corners of the sensor printed board 103, and the through holes are used for fixing the sensor printed board 103. When the camera focal plane electric adjustment and calibration device is specifically implemented, the utility model discloses another subassembly of camera focal plane still includes screw 106, and screw 106 is used for fixing sensor printed board 103 on connecting block 105. The thickness 103 of the sensor printed board can be set to be 0.5-3 mm, and the thickness of the connecting block 105 can be set to be 5-50 mm. In this embodiment, the thickness 103 of the sensor board is set to 2mm, and the thickness of the connection block 105 is set to 30 mm.
The working principle is as follows: the printed board provided with the image sensor is arranged on each connecting block through a mounting screw, each connecting block is fixedly connected with one end of one piezoelectric actuator, and the other end of each piezoelectric actuator is fixed on the shell structure. When a voltage is applied to the piezoelectric actuator, the length of the piezoelectric actuator changes, thereby changing the position of the dot printing plate. Different voltages are loaded on each piezoelectric actuator, so that the printed board can change in a larger angle range, and the function of adjusting the focal plane position is achieved.
The base end of the piezoelectric actuator 104 is arranged on the front cover of the machine body and is tightly connected with the front cover of the machine body; the connecting block is arranged on the end face of the displacement end of the piezoelectric actuator and is tightly connected with the piezoelectric actuator; the sensor printed board 103 is fixed to the connection block 105 by screws through holes thereof; the displacement direction of the piezoelectric actuator 104 is perpendicular to the sensor printed board.
And the utility model discloses another subassembly structure of electronic timing of camera focal plane is corresponding, discloses a utility model camera focal plane electronic timing device. The electronic timing device of camera focal plane includes: the camera body comprises a body, a body front cover 101, an image sensor 102, a sensor printed board 103, a piezoelectric actuator 104 and a connecting block 105. The piezoelectric actuators 104 and the connection blocks 105 are arranged in groups, four groups being provided, at four corners of the sensor printed board 103. The thickness of the image sensor 102 is 1-5 mm, and is set to 2.5mm here. In specific implementation, the camera focal plane electric adjusting device further comprises a screw 106. The piezoelectric actuators 104, the connection blocks 105, and the screws 106 are arranged in groups of four groups, which are arranged at four corners of the sensor printed board 103.
After the whole device is assembled, the following conditions are met: when the piezoelectric actuator 104 is at zero voltage, the flange distance (the distance from the front cover lens interface to the focal plane) of the piezoelectric actuator is slightly smaller than the flange distance required by the standard; when the maximum voltage of the piezoelectric actuator 104 is reached, the flange distance thereof should be slightly larger than the flange distance required by the standard, so that each adjusting point can be adjusted to the position required by the standard by adjusting the voltage. As shown in fig. 7 and 8, fig. 7 is a structural diagram of the camera focal plane for electrically adjusting the driving voltage of another component to be zero voltage. Fig. 8 is a structural diagram of the camera focal plane for electrically adjusting the driving voltage of another component to the maximum voltage.
The working process is as follows:
1. When focal plane alignment is started, the same driving voltage is applied to the four piezoelectric actuators 104 at the four mounting corners, so that the four piezoelectric actuators 104 generate the same displacement, and the image sensor 102 and the sensor printed board are translated synchronously.
2. Selecting a mounting angle to measure whether the flange distance of the position meets the flange distance of the standard requirement, and if the flange distance of the position is found to be smaller than the flange distance of the standard requirement through measurement, increasing the driving voltage of the piezoelectric actuator of the mounting angle to reduce the flange distance of the position; if the measurement finds that the flange distance of the position is larger than the flange distance required by the standard, the driving voltage of the piezoelectric actuator 104 of the installation angle is reduced, so that the flange distance of the position is increased, as shown in fig. 9 and 10. Fig. 9 is a structural diagram of the camera focal plane when the flange distance of another component of the camera focal plane is insufficient. Fig. 10 is a structural diagram of the camera focal plane for electrically adjusting the distance between the flanges of the other module. And repeatedly adjusting until the flange distance of the mounting angle meets the standard requirement.
3. And (3) adjusting all the rest installation angles in the step (2), and adjusting the flange distance of each installation angle position to a position required by the standard.
4. And measuring the flange distance of each mounting angle position again, and finely adjusting the piezoelectric actuators of partial mounting angles until the flange distances of all the mounting angle positions meet the standard requirement.
In this embodiment, the thickness of the front cover 101 of the body is 10mm, the lens interface on the front cover 101 of the body is a C-port, and the standard flange distance is 17.526 mm. The piezoelectric actuator 104 is a stacked piezoelectric actuator, and is shaped like a rectangular parallelepiped, and has a zero voltage length of 5mm, a range of 0-50 μm, a driving voltage of 0-50V, and a precision of 0.1 μm. The connecting block 105 is an aluminum alloy block, the shape of the connecting block is a cuboid, the length of the connecting block is 5mm, and the threaded hole is M3. The screw 106 is M3 model, corresponding to the threaded hole of the connecting block 105. The image sensor 102 is 2.5mm thick. The flange distance under zero voltage is 17.5mm, the flange distance under maximum voltage is 17.55mm, and the interval range is satisfied.
All piezoelectric actuators are loaded with a 20V drive voltage and the piezoelectric actuator 104 increases in length by 20 μm. The flange distance of a certain installation angle position is measured, wherein the flange distance is 17.523mm and is smaller than the standard flange distance of 17.526 mm. At this time, the driving voltage of the piezoelectric actuator 104 at the installation angle position is increased to 22V, and the length of the piezoelectric actuator 104 is increased again. The flange distance at the position is measured to be 17.526mm, and the standard requirement is met. The flange distance of the other installation angle position is measured, and the flange distance is 17.528mm and is larger than the standard flange distance of 17.526 mm. The piezoelectric actuator 104 at this mounting angle position is reduced in driving voltage to 18V, and the length of the piezoelectric actuator 104 is reduced. The flange distance at the position is measured to be 17.526mm, and the standard requirement is met. Thus, the piezoelectric actuators 104 at each mounting angle were adjusted to have a flange pitch of 17.526 mm.
After the piezoelectric actuator 104 of each mounting angle is adjusted, the flange distance of some mounting angles may be changed due to mechanical reasons, if the flange distance of a certain mounting angle is changed to 17.525mm, the piezoelectric actuator 104 of the mounting angle is adjusted to be adjusted to 17.526mm by increasing the voltage by 1V.
According to the above description, use according to the utility model discloses an electronic timing subassembly of camera focal plane and device improves the manual timing mode of camera focal plane, has added piezoelectric actuator between sensor printing board and fuselage protecgulum, because the super high displacement precision of piezoelectric actuator, makes the timing of whole camera focal plane reach high precision, makes the camera focal plane obtain the precision calibration.
The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. The camera focal plane electric adjusting assembly comprises a camera body and is characterized by comprising a camera body front cover (101), an image sensor (102), a sensor printed board (103) and a piezoelectric actuator (104); the base end of the piezoelectric actuator (104) is arranged on the front cover (101) of the machine body; the sensor printed board (103) is connected to the piezoelectric actuator (104), and a displacement direction of the piezoelectric actuator (104) is perpendicular to the sensor printed board (103).
2. The electric adjustment and calibration assembly for camera focal plane according to claim 1, characterized in that a connection block (105) is arranged between the sensor printed board (103) and the piezoelectric actuator (104), and the connection block (105) is used for connecting the sensor printed board (103) and the piezoelectric actuator (104).
3. The electric adjustment assembly for focal plane of camera according to claim 2, characterized in that the connecting block (105) is mounted on the displacement end face of the piezoelectric actuator (104).
4. The electric adjustment and calibration assembly for camera focal plane according to claim 2, characterized in that the four corners of the sensor printed board (103) are provided with through holes.
5. The electric adjustment assembly for camera focal plane according to claim 2, further comprising a screw (106), wherein the screw (106) is used for fixing the sensor printed board (103) on the connection block (105).
6. The electric adjustment assembly for camera focal plane according to claim 4, characterized in that the through hole is used for fixing the sensor printed board (103).
7. the camera focal plane electrical timing assembly of any one of claims 1 to 6, wherein the sensor printed board (103) is used to mount the image sensor (102).
8. The camera focal plane electrical gauge assembly of claim 7, wherein the piezoelectric actuator (104) is a stacked piezoelectric actuator.
9. The electric adjustment and calibration assembly for camera focal plane according to claim 7, characterized in that the thickness of the image sensor (102) is 1-5 mm.
10. An electric adjustment device for camera focal plane, comprising the assembly of any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350437.6U CN209767729U (en) | 2019-03-19 | 2019-03-19 | Camera focal plane electric adjusting assembly and device |
| PCT/CN2019/111902 WO2020186744A1 (en) | 2019-03-19 | 2019-10-18 | Electric adjustment assembly and apparatus for focal plane of camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350437.6U CN209767729U (en) | 2019-03-19 | 2019-03-19 | Camera focal plane electric adjusting assembly and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209767729U true CN209767729U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920350437.6U Active CN209767729U (en) | 2019-03-19 | 2019-03-19 | Camera focal plane electric adjusting assembly and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209767729U (en) |
| WO (1) | WO2020186744A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8190012B2 (en) * | 2009-09-10 | 2012-05-29 | Raytheon Company | Optical system with adjustable shims |
| US9151665B1 (en) * | 2013-03-29 | 2015-10-06 | Google Inc. | Devices and methods for providing optical element focus functionality with a movable imager die |
| CN207782990U (en) * | 2018-01-12 | 2018-08-28 | 东莞前沿技术研究院 | Power-driven focusing mechanism |
-
2019
- 2019-03-19 CN CN201920350437.6U patent/CN209767729U/en active Active
- 2019-10-18 WO PCT/CN2019/111902 patent/WO2020186744A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2020186744A1 (en) | 2020-09-24 |
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