WO2018216915A1

WO2018216915A1 - Camera device

Info

Publication number: WO2018216915A1
Application number: PCT/KR2018/004977
Authority: WO
Inventors: 이경용; 이상화; 연제승; 박철순
Original assignee: 자화전자 주식회사
Priority date: 2017-05-22
Filing date: 2018-04-30
Publication date: 2018-11-29
Also published as: CN211293562U; KR20180127698A

Abstract

A camera device according to the present invention comprises: a carrier in which a lens assembly is disposed along an optical axis; a main frame which has the carrier mounted thereto and is provided with a recess part rail; a housing in which the main frame is mounted and a guide rail corresponding to the recess part rail is formed; and a driving part for moving the main frame in a direction perpendicular to the optical axis.

Description

Camera device

The present invention relates to a camera apparatus, and more particularly, to a camera apparatus to which a structure for precisely moving a lens assembly for generating an image of a subject is applied.

Recently, a method of generating a panoramic image by merging a plurality of images through a method of matching a corresponding boundary portion of the images has been recently used.

In order to generate such a panoramic image, an image of an enlarged or expanded area in which a panoramic image is to be generated should be basically taken. However, since a device in which the conventional panorama image generating function is implemented is implemented with a camera device fixed therein. In order for the user to generate an image for a larger or enlarged area, the user must directly move the view direction of the camera device on which the lens assembly is mounted.

Since this method is human dependent, there is an inherent problem that the lens assembly cannot be accurately rotated without shaking by the coplanar movement path, and it is easily affected by external factors such as wind and vibration or user's own hand shaking. In addition, there is a problem in that the image of the extended area cannot be generated accurately and furthermore, the user cannot accurately reflect the exact area desired by the user.

In order to solve this problem, a method of arranging a plurality of lenses in a single device so that the viewing angles do not overlap has been recently introduced to simultaneously capture an image of a wider viewing angle, that is, a larger shooting area.

However, this method simply extends the physical structure in parallel, and there is an inherent problem that the device cannot be miniaturized because a larger space in which a plurality of lenses are disposed must be secured. Another problem arises that the utility is extremely low and the manufacturing cost also increases.

Meanwhile, in order to generate depth images of a subject, generate a panoramic image, express a perspective of the subject, render, 3D images, and produce VR content, the geometric characteristics of the subject and the relative distance information for each point of the subject are required. Do.

The shape of the subject is reflected in the general image taken by the camera, but since the relative distance information of each point of the subject is not included in this, an additional method for generating the distance information of the subject is needed. Or a method using a Kinect sensor or a time of flight (TOF) technology is mainly used.

Among them, TOF technology capable of generating relatively accurate distance information corresponds to a technology for calculating a distance from a subject using a difference between characteristics of light irradiated to the subject and characteristics of light reflected and returned by the subject.

In the device in which the TOF technology is implemented, as described above, the user needs to rotate the camera device in order to generate an image of an extended area like the general camera device described above.

The present invention was devised to solve the above-mentioned problem in the above-described background, and the lens assembly is configured to move precisely with respect to the device to more accurately generate an image of the expanded region, and use the panorama of the expanded region. It is an object of the present invention to provide a camera device capable of generating images with higher reliability.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, the objects and advantages of the present invention can be realized by the configuration shown in the claims and combinations thereof.

The camera device of the present invention for achieving the above object is a carrier in which the lens assembly is disposed along the optical axis; A main frame mounted with the carrier and provided with a groove rail; A housing in which the main frame is mounted and a guide rail corresponding to the groove rail is formed; And it may be configured to include a drive unit for moving the main frame in a direction perpendicular to the optical axis.

According to an embodiment, the present invention may be configured to further include a ball disposed between the groove rail and the guide rail.

The groove rail and the guide rail of the present invention has a rounded shape, the main frame may be configured to rotate along the groove rail or the guide rail, in this case, the groove rail of the present invention is at least 2 Preferably, the dogs are configured to be spaced apart from each other and formed side by side.

In addition, the groove rail of the present invention may be formed in the lower portion of the main frame, the guide rail may be formed in the bottom of the housing to face the groove rail.

The driving unit of the present invention is a drive magnet disposed in any one of the main frame or housing; And a coil disposed on the other of the main frame or the housing in which the driving magnet is not disposed to generate an electromagnetic force in the driving magnet.

In addition, the driving magnet is preferably configured to be provided in the left and right positions symmetrical with respect to the center portion of the main frame, respectively.

More preferably, the driving magnet may be configured to further include a hall sensor for recognizing the position of the driving magnet, the surface facing the coil is made of two or more poles.

In addition, it may be configured to further include an attraction portion for generating an attraction between the mainframe and the housing of the present invention, the attraction portion of the present invention is the attraction magnet disposed in any one of the mainframe or housing; And a yoke which is disposed on the other of the mainframe or the housing in which the attraction magnet is not arranged to generate attraction force in the attraction magnet. In this case, the attraction magnet is preferably configured to be disposed in positions symmetrical with respect to the center portion of the main frame.

The lens assembly of the present invention includes a light emitting unit for irradiating light to the subject; A detector configured to detect light reflected from the subject; And a controller configured to generate distance data from the subject by using light emitted from the light emitter and light detected by the detector.

According to a preferred embodiment of the present invention, since the rotational movement of the main frame is precisely implemented in the vertical direction with respect to the optical axis along the path provided by the groove rail and the guide rail, the panoramic image of the extended area can be precisely Can be generated.

According to another preferred embodiment of the present invention, the camera unit can be miniaturized by configuring a driving unit using a magnet and a coil that occupy a relatively small space, and generated during driving by using an electromagnetic force as a driving force for moving the lens assembly. Noise can be minimized and response characteristics can be further improved.

In addition, according to another preferred embodiment of the present invention, since the lens assembly itself inside the camera device is automatically moved to rotate the effect that the user does not require any additional operation to move or rotate the camera device directly. Can be provided.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, which serve to more effectively understand the technical spirit of the present invention, the present invention is described in these drawings. It should not be construed as limited to matters.

1 is a view showing the overall appearance of a camera apparatus according to an embodiment of the present invention,

FIG. 2 is an exploded coupling view showing the configuration of the camera device shown in FIG. 1;

3 is a view showing the structure of the groove rail and the guide rail according to an embodiment of the present invention,

4 is a block diagram showing a detailed configuration of a TOF module of the present invention;

5 is a diagram illustrating a process of expanding a range in which a lens assembly generates an image as the main frame rotates.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.

Hereinafter, with reference to the accompanying drawings will be described in detail for the camera device 100 according to the present invention.

1 is a view showing the overall appearance of the camera device 100 according to an embodiment of the present invention.

As shown in FIG. 1, the camera apparatus 100 of the present invention includes a housing 130, a mainframe 110, a carrier 120, a lens assembly 121, a shield can 5, and a circuit board 10. And the like.

First, the housing 130 of the present invention functions as a case of the camera apparatus 100 and provides a space in which the components of the present invention described below are provided as described below.

The mainframe 110 of the present invention provided in the housing 130 provides a space in which the carrier 120 of the present invention, which will be described later, is installed.

Since the carrier 120 of the present invention is installed in the main frame 110, when the main frame 110 moves or rotates, the carrier 120 physically moves together with the main frame 110.

Since the lens assembly 121 of the present invention is mounted to the carrier 121 along the optical axis and the carrier 120 moves together with the main frame 110, the lens assembly 121 of the present invention moves or moves from the main frame 110. It moves or rotates with the rotation movement.

In the description of the present invention, an optical axis refers to a direction in which light of a subject is incident on a lens, that is, an axis direction perpendicular to a horizontal plane of the lens, and is generally referred to as a Z axis. Since the lens assembly 121 may be formed by combining one or more lenses, a lens assembly, or an optical system, components such as a lens constituting the lens assembly 121 are disposed along the optical axis (Z axis).

The shield can 5 of the present invention may be implemented in various shapes, materials, and the like. When the camera device 100 of the present invention is installed in a mobile terminal or other device, other external elements installed in the mobile terminal, In order to prevent the electromagnetic force from affecting the module or the like, it is preferably implemented with a metal material or the like.

On the other hand, the circuit board 10 of the present invention may be implemented as a flexible printed circuit board (FPCB) to improve flexibility, formability, etc., the Hall sensor 131, which is installed inside the camera device 100 of the present invention 2) interfacing the control signal and the like, or supplying power to the hall sensor 131 (FIG. 2) and the coil 143 (FIG. 2).

Hereinafter, with reference to Figures 2 and 3 will be described in detail the specific configuration and function of the present invention.

2 is an exploded coupling view showing the configuration of the camera device 100 shown in FIG. 1 in detail, and FIG. 3 is a structure of the groove rail 111 and the guide rail 133 according to an exemplary embodiment of the present invention. Is a view showing in detail.

As shown in FIG. 2 and FIG. 3, the camera device 100 of the present invention may include a main frame 110, a carrier 120, a housing 130, a driver 140, and the like.

The main frame 110 of the present invention is moved or rotated in a direction perpendicular to the optical axis by the driving force provided by the driving unit 140 of the present invention, the movement of the main frame 110 as described below It is guided by the groove rail 111 or the guide rail 133.

That is, as shown in FIG. 3, a groove rail 111 is provided in the main frame 110, and a guide rail 133 having a structure or shape corresponding to the groove rail 111 is provided in the housing 130. Since the groove rail 111 and the guide rail 133 of the present invention is provided with a path that the main frame 110 moves in the inner space of the housing 130.

According to the embodiment, the groove rail 111 is formed in the lower portion of the main frame 110 (see FIG. 2), and the guide rail 133 faces the groove rail 111 formed in the lower portion of the main frame 110. It may be formed on the bottom of the housing 130 to.

Such an embodiment is an example, and various designs may be made at the level of ordinary skill in the art provided that the corresponding shape or structure of the groove rail 111 and the guide rail 133 is implemented in each of the mainframe 110 and the housing 130. Of course, it is possible to change or change the position.

Since the lens assembly 121 may generate a wider area image when the lens assembly 121 moves in a rotational path than the linear path, the groove rail 111 of the present invention is formed in a round shape and the guide rail 133. Is formed in a shape corresponding to the main frame 110, that is, the lens assembly 121 provided in the main frame 110 to rotate to move along the path corresponding to the groove rail 111 or the guide rail 133 It is preferable to construct.

In addition, in order to stably move the rotation of the main frame 110 and to generate a more precise image therefrom, it is preferable that two groove rails 111 are formed side by side to be spaced apart from each other.

Furthermore, the groove rail 111 of the present invention extends in the horizontal length direction in order to rotate the main frame 110 in a direction perpendicular to the optical axis, that is, rotate in a horizontal direction (on the same plane) of the subject. It may be formed in a rounded shape.

Furthermore, if one of the two guide rails 133 is configured such that its cross section is V-shaped and the other is configured such that its cross section is U-shaped or the like, the main frame ( Not only can the 110 be moved more without shaking, but also the movement of the mainframe 110 can be implemented more flexibly.

As shown in FIG. 3, a plurality of balls 115 are disposed between the groove rail 111 and the guide rail 133, and through the arrangement of the balls 115, the main frame 110 of the present invention. The housing 130 may maintain a predetermined interval and the mainframe 110 of the present invention may be referred to the housing 130 with a friction force minimized by point-contact by the ball 115. Can be moved to rotate.

A portion of the ball 115 is accommodated in the groove rail 111 or the guide rail 133 as illustrated in FIG. 3 in order to prevent the external deviation of the ball 115 and to reduce the volume or size of the device itself. It may be provided in the form.

The attraction part 150 of the present invention is a configuration for providing a attraction force to closely contact the mainframe 110 and the housing 130, and specifically, may include a attraction magnet 151 and a yoke 153.

The attraction magnet 151 is disposed on either the mainframe 110 or the housing 130, and the yoke 153 is located on the other of the mainframe 110 or the housing 130, where the attraction magnet 151 is not disposed. Can be arranged.

The yoke 153 generates attraction to the attraction magnet 151 and pulls the mainframe 110 toward the housing 130, so that the mainframe 110 is in continuous point contact with the ball 115 by this attraction. In addition, the mainframe 110 can be effectively prevented from being separated to the outside.

Furthermore, in order to effectively implement continuous point contact and external departure prevention using the same attraction force, the attraction magnet 151 is disposed at a position symmetrical with respect to the center of the mainframe 110, respectively, and the attraction magnet 151 The yoke 153 for generating an attractive force is preferably disposed at positions symmetrical with respect to the center portion of the housing 130.

Furthermore, the yoke 153 is preferably disposed in a direction facing the attraction magnet 151 so that a stronger attraction force is provided to the mainframe 110 and the housing 130 of the present invention.

According to an embodiment, when the yoke 153 is disposed in the housing 130 which is symmetric with respect to the driving magnet 141 and the ball 115 to be described later, the driving magnet 141 may replace the role of the attraction magnet 151. It may be.

That is, when the yoke 153 is disposed in the housing 130 which is symmetrical with the driving magnet 141 based on the ball 115, an attraction force is generated between the driving magnet 141 and the yoke 153, and the main force is transferred through the attraction force. Since the frame 110 is pulled in the direction of the housing 130, the main frame 110 and the ball 115 are in continuous point contact and the main frame 110 can be prevented from being separated outward.

The driving unit 140 of the present invention is a configuration for providing a driving force for moving or rotating the main frame 110. If the main frame 110 can be moved according to an embodiment, various applications such as piezoelectric elements and motors are possible. Do.

In this regard, in consideration of power consumption, low noise, space utilization, reaction speed, and the like, the driving unit 140 of the present invention is preferably implemented with a coil 143 and a driving magnet 141 for generating an electromagnetic force.

Since the electromagnetic force generated between the coil 143 and the driving magnet 141 forms a relationship of relative force, according to the embodiment, the driving magnet 141 of the present invention may be either the main frame 110 or the housing 130. The coil 143 of the present invention may be disposed to face the driving magnet 141 on the other of the main frame 110 or the housing 130 in which the driving magnet 141 is not disposed.

It is preferable to install the driving magnet 141 that does not require electrical wiring in the mainframe 110, which is a moving object, and the coil 143, which is installed in the housing 130, in order to more easily implement a driving relationship. .

When external power is applied to the coil 143, a magnetic field or electromagnetic force is generated in the coil 143, and the generated magnetic field is transmitted to the driving magnet 141, thereby moving the main frame 110 to moving or rotating.

According to an embodiment, the driving magnet 141 is disposed only on one side of either the mainframe 110 or the housing 130, and the coil 143 is the driving magnet 141 of the mainframe 110 or the housing 130. It may be disposed to face the driving magnet 141 on the other side is not disposed.

As such, even when the driving magnet 141 or the coil 143 is disposed only on one side of the main frame 110 and the housing 130, the driving unit 140 of the present invention is generated by the driving magnet 141 and the coil 143. The electromagnetic force may be used to provide a driving force necessary for the movement or rotational movement of the main frame 110.

In this regard, in order to more effectively implement the movement or rotational movement of the main frame 110, the driving magnet 141 is provided in the left and right positions symmetrical with respect to the center of the main frame 110, respectively, and the coil Each of the housings 143 facing the driving magnets 141 may be configured to provide a balanced driving force to the main frame 110 at both symmetrical sides.

Furthermore, in order to more precisely and effectively implement the driving force generated through the mutual arrangement of the driving magnet 141 and the coil 143, the camera apparatus 100 of the present invention is shown in FIG. It may be configured to further include a Hall sensor 131 for recognizing the position.

The hall sensor 131 of the present invention is configured to detect the position of the main frame 110 provided with the driving magnet 141 by using a hall effect. The hall sensor 131 has a driving magnet 141. When sensing the position of the driving driver (not shown) feedback control so that the power of the appropriate size and direction corresponding to the position of the driving magnet 141 is applied to the coil 143. According to the exemplary embodiment, the driving driver and the hall sensor 131 may be implemented in a single chip form.

In this manner, the feedback of the main frame 110 and the power supply according to the exact position of the main frame 110 can be more precisely implemented by moving the main frame 110, that is, the lens assembly 121.

According to the exemplary embodiment, the surface of the driving magnet 141 facing the coil 143, that is, exposed to the hall sensor 131 is configured to have two or more poles, and the hall sensor 131 has two or more poles, that is, multiple poles. It may be configured to detect the position of the driving magnet 141 made of magnetized.

In the description of the present invention, the multi-pole magnetizing magnet refers to a magnet in which both the N pole and the S pole are disposed to be exposed to the Hall sensor 131, and according to the embodiment, two or more N poles and two or more S poles are hall sensors. And a magnet disposed to be exposed to 131.

As described above, when the hall sensor 131 detects a change in the magnetic force of the magnet magnetized by the multi-pole magnetization, the hall sensor 131 may simultaneously sense the direction of the magnetic force, that is, the positive magnetic force and the negative magnetic force, as well as the magnitude of the magnetic force.

Therefore, in this case, the magnetic force section sensed by the Hall sensor 131 can be more expanded than the case of detecting the magnetic force change of the monopole magnetized magnet, and the direction thereof can also be used to more precisely implement the movement of the mainframe 110. Can be.

Magnetic yoke 20 of the present invention is preferably implemented in a metal material so that the magnetic field or electromagnetic force generated in the coil 143 can be concentrated on the driving magnet 141 without leaking to the outside.

According to an exemplary embodiment, the lens assembly 121 may be a TOF module 121 mounted on the carrier 120 to generate distance data of a subject (P in FIG. 4).

4 is a block diagram showing a detailed configuration of the TOF module 121 of the present invention.

As shown in FIG. 4, the TOF module 121 may include a light emitter 123, a detector 125, and a controller 127.

The light emitter 123 irradiates light to the subject P, and the detector 125 detects the reflected light when the light irradiated onto the subject P is reflected by the subject P again. do.

When the light is irradiated and reflected again as described above, the controller 127 of the present invention generates distance data between the subject P using light emitted from the light emitter 123 and light detected by the detector 125. As a matter of course, the depth image D may be generated using the generated distance data, or the panorama depth image may be generated using the generated depth image D.

As a representative method of generating the depth image D using such a configuration, the object P may be measured by measuring a time difference between a time point at which light is emitted from the light emitter 123 and a time point at which light is detected by the detector 125. ) And a depth image (D) is generated using the generated distance data.

In addition to the above method, a method of generating distance data using a cycle of light is briefly described as follows.

In the method using the cycle of light, the light emitter 123 illuminates the subject P while blinking the LED at a predetermined cycle. In this case, the sensing unit 125 is composed of an image sensor in which each cell consists of a pair of In Phase Receptor (A) and Out Phase Receptor (B), where A is synchronized with the blinking period of the LED. It is activated in the section where the LED is turned on and B is activated in the section where the LED is turned off in synchronization with the blinking cycle of the LED.

As such, when A and B are activated differently with a time difference, a difference occurs in the amount of light reflected from the subject P and sensed by the receiver according to the distance from the subject P. By comparing the difference between the amount of light received and the amount of light received by B, the controller 127 generates distance data with the subject P and generates depth image data D using the generated distance data.

In the above, the method of generating distance data with the subject P using the time required for the light to be reflected back and the method of generating distance data using the period of the light have been described. It is preferable that the method of generating distance data with respect to the subject P using the characteristics of light is not limited to the present invention.

FIG. 5 is a diagram illustrating a process of expanding a range in which the lens assembly 121 generates an image as the main frame 110 rotates.

As shown in FIG. 5, the groove rail 111 or the guide rail 133 has a structure for guiding the rotational movement of the main frame 110, and the driving force generated when the driving force is generated in the driving unit 140. As a result, the main frame 110 is rotated along the groove rail 111 or the guide rail 133.

FIG. 5B is a view illustrating the camera apparatus 100 at the reference position where the rotation movement of the main frame 110 is not performed, and the image generation range of the lens assembly 121 is S at this position.

As shown in (a) of FIG. 5, when the main frame 110 rotates counterclockwise by a driving force, the lens assembly 121 mounted on the carrier 120 also rotates counterclockwise by a maximum θ. Done.

As a result, the image generation range of the lens assembly 121 is extended by the maximum S1 to the left on the X-axis basis.

In a corresponding aspect, as shown in (c) of FIG. 5, when the main frame 110 is rotated in the clockwise direction by the driving force, the lens assembly 121 mounted on the carrier 120 also has a maximum θ in the clockwise direction. Since the rotation is moved by as much as the image generating range of the lens assembly 121 is extended by the maximum S2 to the right on the basis of the X-axis.

In this way, the main frame 110, that is, the lens assembly 121 is rotated in the clockwise or counterclockwise direction by the driving force to expand the image generation range of the lens assembly 121 to a maximum V.

In addition, according to the embodiment, when the lens assembly 121 is the TOF module 121, the distance data generation range of the TOF module 121 is extended to the maximum V by the rotational movement of the main frame 110.

As described above, the camera device 100 of the present invention is configured to be guided by the groove rail 111 and the guide rail 133 having the curvature of the rotational movement of the main frame 110 to further control the driving. It is possible to implement precisely, by rotating the mainframe 110 can accurately generate an extended range of image or distance data, and can accurately generate a panoramic image using the extended range of images, Therefore, the depth image D or the panorama depth image of the extended region may be precisely generated using the distance data of the extended region.

Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims.

The accompanying drawings for the purpose of describing the present invention and the embodiments thereof may be shown in somewhat exaggerated form in order to emphasize or highlight the technical contents of the present invention. It should be understood that various forms of modification application may be possible at the level of ordinary skill in the art in consideration.

Claims

A carrier on which the lens assembly is disposed;

A main frame mounted with the carrier and provided with a groove rail;

A housing in which the main frame is mounted and a guide rail corresponding to the groove rail is formed; And

And a driving unit for moving the main frame in a direction perpendicular to the optical axis.
The method of claim 1,

Camera device, characterized in that further comprising a ball disposed between the groove rail and the guide rail.
The method of claim 1, wherein the groove rail and the guide rail,

With rounded shape,

The main frame is a camera device, characterized in that for rotating along the groove rail or the guide rail.
The method of claim 1, wherein the groove rail,

At least two are spaced apart from each other and formed side by side.
The method of claim 1, wherein the groove rail,

Is formed in the lower portion of the mainframe,

And the guide rail is formed at a bottom of the housing to face the groove rail.
The method of claim 1, wherein the driving unit,

A driving magnet disposed in any one of the mainframe or the housing; And

And a coil disposed on the other of the main frame or the housing, in which the driving magnet is not disposed, to generate an electromagnetic force in the driving magnet.
The method of claim 6, wherein the driving magnet,

Camera apparatus, characterized in that provided in the left and right positions symmetrical with respect to the center portion of the main frame, respectively.
The method of claim 6, wherein the driving magnet,

The surface facing the coil is made of two or more poles,

Camera device further comprises a Hall sensor for recognizing the position of the drive magnet.
The method of claim 1,

Camera apparatus characterized in that it further comprises a manpower portion for generating an attraction force between the mainframe and the housing.
The method of claim 9, wherein the attraction portion,

Attraction magnets disposed in any one of the mainframe or the housing; And

And a yoke disposed in the mainframe or the other of the housings in which the attraction magnets are not arranged to generate attraction force in the attraction magnets.
The method of claim 9, wherein the attraction magnet,

Camera apparatus, characterized in that disposed in the position symmetrical with respect to the center portion of the mainframe.
The method of claim 1, wherein the lens assembly,

A light emitting unit for irradiating light to the subject;

A detector configured to detect light reflected from the subject; And

And a controller configured to generate distance data from the subject by using light emitted from the light emitter and light detected by the detector.