WO2017173648A1

WO2017173648A1 - Three-dimensional digital photographing device based on dual voice-coil motors capable of controlling lens tilt

Info

Publication number: WO2017173648A1
Application number: PCT/CN2016/078783
Authority: WO
Inventors: 肖顺利; 麦练智
Original assignee: 东莞佩斯讯光电技术有限公司
Priority date: 2016-04-08
Filing date: 2016-04-08
Publication date: 2017-10-12

Abstract

Provided is a three-dimensional digital photographing device based on dual voice-coil motors capable of controlling a lens tilt, comprising: a first optical image stabilization autofocus motor (1); a second optical image stabilization autofocus motor (2); and a central processing unit (6). The first optical image stabilization autofocus motor (1) and the second optical image stabilization autofocus motor (2) are capable of controlling a tilt of a lens (3) and respectively output image signals to the central processing unit (6). The central processing unit (6) outputs focusing signals, image stabilization signals and optical axis adjusting signals to the first optical image stabilization autofocus motor (1) and the second optical image stabilization autofocus motor (2), respectively. The solution can prevent a problem in which hand tremors result in a blurry image and affect three-dimensional imaging effect, and increase a yield and production efficiency of a three-dimensional photographing device having an optical image stabilization function. Moreover, the invention can be used to provide an optical image stabilization function, improve a production process, and increase a yield and production efficiency for a large three-dimensional digital photographing device.

Description

Stereoscopic digital camera device based on dual controllable lens tilting voice coil motor

[0001] The present invention discloses an image pickup apparatus, in particular, a stereoscopic digital camera device based on a dual controllable lens tilt type voice coil motor, which is used for realizing optical anti-shake and three-dimensional in three-dimensional stereo imaging and three-dimensional stereo imaging. Optical axis tilt compensation and coordinated control during stereo imaging focusing.

Background technique

[0002] In a large-scale photographing device, a stereoscopic digital camera device based on a dual image sensor has been introduced for many years. With the appearance of a highly integrated miniature camera autofocus voice coil motor and a voice coil motor with a controllable lens tilt optical image stabilization function (see the invention patent application with the application number: CN102857062A, and the invention of the application number: CN103984199A) Patent application), the implementation of a micro camera with a resolution of 13 million and higher pixels on a portable device such as a touch-screen mobile phone or a tablet computer makes the camera effect of the mobile phone camera more and more close to that of an ordinary digital camera.

[0003] However, a large stereoscopic digital camera is usually used on a tripod. Unlike a large stereoscopic digital camera, a portable three-dimensional digital camera is used in a handheld mode. Hand-held use is susceptible to the sharpness of the image, such as the natural jitter of the human hand, and the effect of three-dimensional imaging. In the same way, unlike the production and calibration process of large-scale camera units, highly integrated micro-stereo cameras are difficult to handle in the calibration of parallel optical axes and the coordination of optical axes during motor motion.

technical problem

[0004] In view of the above-mentioned prior art portable three-dimensional digital camera device is used in a hand-held manner, which is susceptible to the influence of natural shaking of the human hand and the like, and the disadvantage of the image clarity and the effect of three-dimensional imaging, the present invention provides a A stereo digital camera based on a dual controllable lens tilt voice coil motor, an optical anti-shake three-dimensional camera device using two controllable lens tilt optical anti-shake voice coil motors, and tiltable optics using controllable lenses The lens tilt compensation function of the anti-shake voice coil motor realizes the tilt compensation and coordinated control of the optical axes of the two sets of image sensors and lenses during the focusing process of the three-dimensional stereo imaging.

Problem solution Technical solution

[0005] The technical solution adopted by the present invention to solve the technical problem thereof is: a stereoscopic digital camera device based on a dual controllable lens tilting voice coil motor, the camera device comprising a first optical image stabilization focus motor and a second optical image stabilization focus The motor and the central processing unit, the first optical anti-shake focus motor and the second optical anti-shake focus motor are optical anti-shake focus motors capable of separately controlling the tilt of the lens, the first optical anti-shake focus motor and the second optical anti-shake focus horse The image signals are respectively output to the central processing unit, and the central processing unit outputs the focus, anti-shake and optical axis adjustment signals to the first optical anti-shake focus motor and the second optical anti-shake focus motor, respectively.

[0006] The technical solution adopted by the present invention to solve the technical problem thereof further includes:

[0007] The first optical anti-shake focus motor and the second optical anti-shake focus motor respectively include a lens, a controllable focus motor and an image sensor, and the lens is fixedly mounted with the controllable focus motor, and the image sensor is disposed under the lens , corresponding to the lens setting.

[0008] The lens has a degree of freedom of at least three dimensions under the control of the controllable focus motor, including a Z-axis translation direction, an axial direction rotation, and an R. _y- axis direction rotation.

[0009] The lens consists of one or more lenses.

[0010] The central processing unit is an MCU or a three-dimensional image processing chip.

[0011] The camera device further includes a first optical image stabilization motor driving single chip microcomputer and a second optical image stabilization motor driving the single chip microcomputer, the first optical image stabilization motor driving the single chip microcomputer to control the first optical image stabilization focus motor movement, and the second optical protection The shake motor drives the single-chip microcomputer to control the movement of the second optical anti-shake focus motor, or includes a single-chip microcomputer with multiple outputs, and the single-chip microcomputer controls the movement of the two optical anti-shake focus motors.

[0012] The camera device further includes an accelerometer and a gyro sensor, and the accelerometer and the gyro sensor directly output the camera attitude and the vibration signal to the first optical image stabilization motor to drive the single chip and the second optical image stabilization motor respectively. Driving the single-chip microcomputer; or the speed meter and the gyro sensor directly output the camera attitude and vibration signal to the first optical anti-shake motor to drive the single-chip microcomputer or the second optical anti-shake motor to drive the single-chip microcomputer, and the received single-chip microcomputer then shares the signal to another single-chip microcomputer .

[0013] The first optical image stabilization focus motor can be controlled to synchronously follow the second optical image stabilization focus motor to achieve a set angle or a set associated attitude of the two lens optical axes; or a second optical image stabilization The focus motor can be controlled to synchronously follow the first optical image stabilization focus motor to achieve a set angle or set associated attitude of the two lens optical axes. Advantageous effects of the invention

Beneficial effect

[0014] Compared with the conventional large-scale stereo digital camera device, the present invention proposes a portable miniature three-dimensional stereo camera device, which enables the stereoscopic digital camera to be extended from the operation mode held on the tripod to the portable hand-held operation mode. At the same time, the proposed portable microscopic three-dimensional camera device can prevent the image blur caused by human hand shake or affect the effect of three-dimensional imaging, so that the three-dimensional camera device can be realized from a large device to a small portable device and has practical significance. The invention realizes the optical axis tilt compensation and coordinated control in the production process of the three-dimensional stereo imaging device by the coordinated control of the focusing optical axes of the two sets of controllable lens tilting voice coil motors, and the light brought by the lens focusing motion in the production process of the three-dimensional stereo imaging device Axis tilt compensation and coordinated control can greatly increase the yield and efficiency of production and bring huge economic benefits.

[0015] The optical anti-shake and stereo imaging device based on the dual controllable lens tilting voice coil motor has the practical value and popularization value. Further, with the publication and promotion of the technology of the present invention, a portable three-dimensional digital camera device such as a mobile phone equipped with a highly integrated miniature dual camera function will gradually emerge.

[0016] The present invention can prevent image blurring caused by human hand shake or affect the effect of three-dimensional imaging, and can improve the production yield and production efficiency of the optical anti-shake three-dimensional stereoscopic imaging device. Similarly, the method of the present invention can also be applied to a large stereo digital camera device for optical anti-shake and improved production process and improved production yield and production efficiency.

Brief description of the drawing

DRAWINGS

1 is a schematic perspective view of a single voice coil focus motor of the present invention.

2 is a schematic cross-sectional structural view of a single voice coil focusing motor of the present invention.

3 is a schematic structural view of an optical anti-shake three-dimensional digital camera device realized by two sets of optical anti-shake cameras according to the present invention.

4 is a schematic diagram showing the initial position of the optical axis of the lens or the center of the sensor center of the three-dimensional camera device of the present invention.

[0021] FIG. 5 is an initial position of a lens optical axis or a sensor center normal on both sides of a three-dimensional camera device of the present invention; Schematic.

6 is a schematic diagram showing the tilting principle of the optical axis of the two-side lens of the three-dimensional camera device after focusing motion according to the present invention;

7 is a schematic view showing an inclined structure of an optical axis of a lens of a three-dimensional stereoscopic image pickup device after focusing motion according to the present invention.

8 is a schematic diagram showing the initial position of the lens and the optical axis of the three-dimensional camera device of the present invention.

9 is a schematic structural view showing an initial position of a lens and an optical axis of a three-dimensional stereoscopic imaging device according to the present invention.

10 is a schematic diagram of a control system of a three-dimensional stereo camera device according to the present invention.

[0027] In the figure, 1-first optical anti-shake focus motor, 11-first optical axis, 12-first lens, 13-first controllable focus motor, 14-first image sensor, 2-second optics Anti-shake focus motor, 21-second optical axis, 22-second lens, 23-second controllable focus motor, 24-second image sensor, 3-lens, 4-controllable focus motor, 5-image sensor, 6-Central Processing Unit.

BEST MODE FOR CARRYING OUT THE INVENTION

[0028] This embodiment is a preferred embodiment of the present invention, and other principles and basic structures thereof are the same as or similar to those of the present embodiment, and are all within the scope of the present invention.

Referring to FIG. 1 to FIG. 9, the present invention is mainly a three-dimensional digital camera device based on a dual controllable lens tilting voice coil motor, which is realized by two sets of image sensors and a voice coil motor with a controllable lens tilting. Three-dimensional stereo imaging and lens focus motion control, optical anti-shake coordination control of two voice coil motors tilted by two controllable lenses can realize three-dimensional stereo optical anti-shake, focusing by two sets of controllable lens tilting voice coil motor The optical axis coordinated control can realize the optical axis tilt compensation caused by the three-dimensional imaging camera production process and the lens focusing motion process, and the optical axis parallel compensation and coordinated control required by the three-dimensional imaging principle.

[0030] wherein, a single voice coil focus motor structure, please refer to FIG. 1 and FIG. 2, in this embodiment, a single voice coil focus motor mainly includes a lens 3, a controllable focus motor 4 and an image sensor 5, and a lens 3 Fixedly mounted with the controllable focus motor 4, the lens 3 is controlled by the controllable focus motor 4, the degree of freedom is at least three dimensions, and includes the Z-axis translation direction, the R-axis direction rotation, and the R-axis direction rotation, the image The sensor 5 is disposed under the lens 3, and corresponding to the lens 3, the light transmitted by the lens 3 can be imaged. In this embodiment, the mirror The head 3 can be composed of one or more lenses.

[0031] Referring to FIG. 3 together, the basic structure of the present invention includes a first optical image stabilization focus motor 1, a second optical image stabilization focus motor 2, and a central processing unit 6, a first optical image stabilization focus motor 1 and a second The optical image stabilization focus motor 2 is an optical image stabilization focus motor that can control the tilt of the lens, wherein the two lenses and the two image sensors realize a three-dimensional imaging and anti-shake miniature camera, two sets of image acquisition units composed of a lens and an image sensor. And outputting the image information to the central processing unit 6, respectively. In this embodiment, the central processing unit 6 may be an MC U or a three-dimensional image processing chip.

Referring to FIG. 4 and FIG. 5, the two sets of lenses which may appear in the production process of the miniature three-dimensional imaging digital camera are deflected at the initial position, such as the first lens 12 and the second lens 22; Corresponding first optical axis 11 and second optical axis 21 may occur in a production process that does not correspond to a parallel state.

Referring to FIG. 6 and FIG. 7, the two lenses in the present invention may have problems in that the optical axes of the left and right lenses are inconsistent with each other during the movement of the autofocus. For example, the first optical axis 11 and the second optical axis 12 corresponding to the first lens 12 and the second lens 22 may not correspond to a parallel state during the motion of the autofocus.

[0034] After applying the invention, the invention can compensate and coordinate the above two situations, and finally achieve the following effects.

Referring to FIG. 8 and FIG. 9, the two lenses in the present invention can achieve parallel and uniform effects after the compensation and coordinated control of the left and right lens optical axes in the initial state or the autofocus motion. For example, the first optical axis 11 and the second optical axis 21 corresponding to the first lens 12 and the second lens 22 are capable of moving in parallel during the motion of the autofocus.

[0036] The present invention uses 吋, the control system principle thereof, please refer to FIG. 9, wherein the first optical anti-shake motor drives the single-chip microcomputer 72 to output a control signal to the first controllable lens tilt 吋 optical anti-shake and focus motor 75, control It moves in the Z axis translation direction, the axis rotation direction and the R _y axis rotation direction to achieve focus and tilt compensation, and the second optical image stabilization motor drives the single chip microcomputer 71 to output a control signal to the second controllable lens tilt 吋 optical image stabilization and focus The motor 74 controls its movement in the Z-axis translation direction, the rotation direction of the shaft, and the rotation direction of the shaft to achieve focus and tilt compensation. The accelerometer and the gyro sensor 73 acquire external motion information, and respectively adjust the camera attitude and the vibration signal. The first optical anti-shake motor driving single-chip microcomputer 72 and the second optical anti-shake motor drive the single-chip microcomputer 71 to obtain relevant compensation information. In this embodiment, the accelerometer Directly outputting the camera attitude and vibration signals to the first optical anti-shake motor driving single-chip microcomputer 72 and the second optical anti-shake motor driving single-chip microcomputer 71 directly with the gyro sensor 73, and specifically, the accelerometer and the gyro sensor 73 The camera attitude and vibration signal are output to the first optical anti-shake motor driving single-chip microcomputer 72 or the second optical anti-shake motor to drive the single-chip microcomputer 71, and the received single-chip microcomputer reads the information and shares it to another single-chip microcomputer. The first image sensor 77 converts the optical signal transmitted by the first lens after focusing, anti-shake, and optical axis conversion into an electrical signal, and the second image sensor 76 transmits the second lens after focusing, anti-shake, and optical axis adjustment. The optical signal is converted into an electrical signal, and the first image sensor 77 and the second image sensor 76 respectively output image information to the three-dimensional image processing circuit 78 for three-dimensional processing, and the three-dimensional image processing circuit 78 outputs image information to the upper processor 79, the upper processor. 79 The focus/anti-shake and optical axis adjustment commands are sent to the first optical image stabilization motor driving single-chip microcomputer 72 and the second optical image stabilization motor to drive the single-chip microcomputer 71 to achieve focusing/anti-shake/optical axis adjustment and the like. In this embodiment, the upper processor 79 directly outputs the focus/anti-shake and optical axis adjustment commands to the first optical anti-shake motor driving single-chip microcomputer 72 and the second optical anti-shake motor driving single-chip microcomputer 71, respectively. The upper processor 79 outputs the focus/anti-shake and optical axis adjustment commands to the first optical anti-shake motor driving single-chip microcomputer 72 or the second optical anti-shake motor to drive the single-chip microcomputer 71, and the received single-chip microcomputer reads the information and shares it with another A single chip microcomputer.

Claims

Claim

[Claim 1] A stereoscopic digital camera device based on a dual controllable lens tilt type voice coil motor, characterized in that: the image pickup device comprises a first optical image stabilization focus motor, a second optical image stabilization focus motor and a center The processor, the first optical anti-shake focus motor and the second optical anti-shake focus motor are optical anti-shake focus motors capable of separately controlling the tilt of the lens, and the first optical anti-shake focus motor and the second optical anti-shake focus horse respectively output images The signal is sent to the central processing unit, and the central processing unit outputs a focus, anti-shake and optical axis adjustment signals to the first optical anti-shake focus motor and the second optical anti-shake focus motor, respectively.

[Claim 2] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to claim 1, wherein: the first optical image stabilization focus motor and the second optical image stabilization focus motor Each includes a lens, a controllable focus motor, and an image sensor. The lens is fixedly mounted with a controllable focus motor. The image sensor is placed under the lens, corresponding to the lens setting.

[Claim 3] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to claim 2, wherein: the lens has a degree of freedom of at least three under the control of the controllable focus motor Dimensions, including the Z-axis translation direction, the axial direction rotation, and the axial direction rotation.

[Claim 4] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to claim 2, wherein: the lens is composed of one or more lenses.

[Claim 5] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to claim 1, wherein: the central processing unit is an MCU or a three-dimensional image processing core.

[Claim 6] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to any one of claims 1 to 5, wherein: the image pickup device further comprises a first optical image stabilization device The motor drive single chip microcomputer and the second optical image stabilization motor drive the single chip microcomputer, the first optical image stabilization motor drives the single chip to control the first optical image stabilization focus motor movement, and the second optical image stabilization motor drives the single chip microcomputer to control the second optical image stabilization focus motor movement, or It includes a single-chip microcomputer with multiple outputs, and the single-chip microcomputer controls the movement of two optical anti-shake focus motors.

[Claim 7] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to claim 6, wherein: the image pickup device further comprises an accelerometer and a gyro sensor, an accelerometer and a gyro The sensor directly outputs the camera attitude and vibration signals to the first optical anti-shake motor to drive the single-chip microcomputer and the second optical anti-shake motor to drive the single-chip microcomputer; or the speedometer and the gyro sensor directly output the camera attitude and vibration signals to the camera The first optical anti-shake motor drives the single-chip microcomputer or the second optical anti-shake motor to drive the single-chip microcomputer, and the received single-chip microcomputer shares the signal to another single-chip microcomputer.

[Claim 8] The stereoscopic digital camera device based on the dual controllable lens tilt type voice coil motor according to claim 1, wherein: the first optical image stabilization focus motor can be controlled to synchronously follow the second optical image stabilization Focusing motor to achieve the set angle or set associated attitude of the two lens optical axes; or the second optical anti-shake focus motor can be controlled to synchronously follow the first optical anti-shake focus motor to realize two lenses The optical axis is at a set angle or a set associated attitude.