KR20220103392A - Distance measurement camera device - Google Patents

Abstract

According to an embodiment of the present invention, a camera device is disclosed. The camera device includes: a substrate; a light emitting part including a light source disposed on the substrate, a holder disposed on the substrate, an optical part disposed on the light source, a driving part for moving the optical part along an optical axis, and a photodetector disposed on the substrate; a light receiving part including an image sensor disposed on the substrate; and a control part for controlling the optical part or the light source using an output value received from the photodetector.

Description

DISTANCE MEASUREMENT CAMERA DEVICE

The embodiment relates to a distance measuring camera device.

3D contents are being applied in many fields such as education, manufacturing, and autonomous driving as well as games and culture, and depth map is required to acquire 3D contents. Depth information is information indicating a distance in space, and indicates perspective information of another point with respect to one point of a 2D image. As a method of acquiring depth information, a method of projecting IR (Infrared) structured light onto an object, a method using a stereo camera, a Time of Flight (TOF) method, and the like are used.

In the case of the TOF method or the structured light method, light in the infrared wavelength range is used. Recently, attempts have been made to use the infrared wavelength range for biometric authentication. For example, it is known that the shape of the veins spread on the fingers and the like does not change from fetus throughout life and varies from person to person. Accordingly, the vein pattern can be identified using the camera device equipped with the infrared light source. To this end, after photographing a finger, each finger may be detected by removing the background based on the color and shape of the finger, and a vein pattern of each finger may be extracted from the detected color information of each finger. That is, the average color of the finger, the color of the veins distributed in the finger, and the color of the wrinkles on the finger may be different from each other. For example, the color of the veins distributed in the finger may be weaker than the average color of the finger, and the color of the wrinkles in the finger may be darker than the average color of the finger. Using these features, a value approximating a vein for each pixel can be calculated, and a vein pattern can be extracted using the calculated result. Then, the individual can be identified by comparing the extracted vein pattern of each finger with the pre-registered data. In this way, distance measurement and position recognition are possible through light emission and light reception.

However, such a camera device is required to improve the reliability of the optical axis alignment, eye protection, and impact.

An embodiment is to provide a distance measuring camera device that easily detects an abnormal state of a moving optical unit.

The embodiment provides a distance measuring camera device that controls the light output in response to the abnormal state to prevent damage to the human body or the like by the energy of the light signal (eg, protect the eye).

The problem to be solved in the embodiment is not limited thereto, and it will be said that the purpose or effect that can be grasped from the solving means or embodiment of the problem described below is also included.

A camera device according to an embodiment of the present invention includes a substrate; a light emitting unit including a light source disposed on the substrate, a holder disposed on the substrate, an optical unit disposed on the light source, a driving unit configured to move the optical unit along an optical axis, and a photodetector disposed on the substrate ; a light receiving unit including an image sensor disposed on the substrate; and a controller configured to control the optical unit or the light source using the output value received from the photodetector.

The light source may overlap the optical unit and the optical axis, and the photodetector may overlap the optical unit and the optical axis.

wherein the optic moves from a first height to a second height from the substrate along the optical axis, the second height increases when the optic is disposed at the highest height, and the first height can be the height at which the optic is disposed at the lowest height. have.

The first line and the second line form a first angle, the first line is a line connecting the photodetector element at the intersection of the optical axis and the lowermost surface of the optical unit, and the second line is the optical axis and the uppermost surface of the light source is a line connecting the photodetecting device at the intersection of , and the first angle may be 10 degrees to 80 degrees.

A portion where the first line and the photodetector are connected may be a central region of the photodetector, and a portion where the second line and the photodetector are connected may be a central region of the photodetector.

The controller may detect an abnormal state when the first output value of the photodetector element is greater than the threshold range of the photodetection element or when the second output value of the photodetection element is smaller than the threshold range of the photodetection element.

The controller may detect an abnormal state when a slope between the first output value of the photodetector element and the second output value of the photodetector element is positive.

The controller may detect an abnormal state when a slope between the first output value of the photodetector element and the second output value of the photodetector element is within a predetermined value.

The control unit may reduce or block the current applied to the light source.

The controller may adjust the current applied to the light source when the first output value of the photodetector deviates from a critical range of the photodetector.

The optical unit may include a lens barrel and at least one lens accommodated in the lens barrel, and a lens closest to the light source among the at least one lens or a reflective member disposed on a lower surface of the lens barrel.

According to the embodiment, by changing the light pattern of the light or the light signal according to various variables such as the distance to the object and the resolution, the light can be flexibly driven according to the needs of various applications.

In addition, according to the embodiment, it is possible to implement a camera device that easily detects an abnormal state of a moving optical unit.

According to the embodiment, it is possible to implement a camera device that controls the light output in response to an abnormal state to prevent damage to the human body or the like by the energy of the optical signal.

Various and advantageous advantages and effects of the present invention are not limited to the above, and will be more easily understood in the course of describing specific embodiments of the present invention.

1 is a perspective view of a camera device according to an embodiment;
Figure 2 is a cross-sectional view taken along line AA' in Figure 1,
3 is an exploded perspective view of a camera device according to an embodiment;
4 is a perspective view illustrating a housing of a light emitting unit according to an embodiment;
5 is a top view of the housing of the light emitting unit according to the embodiment;
6 is another perspective view of the housing of the light emitting unit according to the embodiment;
7 is a view showing a first optical unit and a first lens holder of the light emitting unit according to the embodiment;
8 is a perspective view of a first lens holder of a light emitting unit according to an embodiment;
9 is a cross-sectional view of a first lens holder, a housing, and a driving coil part of the light emitting part according to the embodiment;
10 is a view showing a driving magnet unit and a driving coil unit of the light emitting unit according to the embodiment;
11 is a view for explaining the driving of the driving magnet unit and the driving coil unit of the light emitting unit according to the embodiment;
12 is a top view of a driving magnet unit, a driving coil unit, a side substrate, and a control element of the light emitting unit according to the embodiment;
14 is a view showing one side of the side substrate of the light emitting unit according to the embodiment;
15 is a view showing the other side of the side substrate of the light emitting unit according to the embodiment,
16 is a top view of a first lens holder, a driving magnet part, a driving coil part, a housing, a side substrate, and a control element of the light emitting part according to the embodiment;
17 is a cross-sectional view taken along ZZ' in FIG. 16;
18 is a cross-sectional view taken along QQ' in FIG. 16;
19 is a cross-sectional view taken along line YY' in FIG. 16;
20 is a view showing a first elastic member of the light emitting part according to the embodiment,
21 is a view showing the coupling of the first elastic member of the light emitting part according to the embodiment,
22 is a view showing a second elastic member of the light emitting part according to the embodiment;
23 is a view showing the combination of the light emitting part and the second elastic member according to the embodiment,
24 is a view showing the base of the camera module according to the embodiment,
25 is a view showing a second optical unit and a second lens barrel of the light receiving unit according to the embodiment;
26 is a view showing a cover of the camera module according to the embodiment,
27 is a view for explaining the movement of the first optical unit in the light emitting unit according to the embodiment,
28 is a view for explaining the optical signal shape according to the movement of the first optical unit,
29 is a view showing an example of the image of the light receiving unit according to the movement of the first optical unit,
30 is a diagram for explaining a configuration diagram and light reflection in a camera device according to an embodiment;
31 is a cross-sectional view of a camera device according to an embodiment;
32 is a cross-sectional view of a camera device according to an example;
33 is a cross-sectional view of a camera device according to another example;
34 is a view of a light source and an output value in a camera device according to an embodiment;
35 is a view for explaining the movement of the first optical unit in the camera device according to the embodiment;
36 is a diagram illustrating an output value for movement of a camera device;
37 is a view showing an abnormal state of the first optical unit in the camera device according to the embodiment;
38 is a diagram illustrating an output value for movement of the camera device in case of overcurrent in the camera device according to the embodiment;
39 is a view showing an output value for movement of the camera device when the first optical unit is damaged in the camera device according to the embodiment;
40 is a view showing separation of the first optical unit in the camera device according to the embodiment;
41 is a view showing an output value for movement of the camera device when the first optical unit is separated from the camera device according to the embodiment;
42 is a view showing a modified example of the camera device according to the embodiment,
43 is a perspective view and a bottom view of the first optical unit,
44 is a diagram illustrating an optical device including a camera device according to an embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical spirit of the present invention is not limited to some described embodiments, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components between the embodiments may be selected. It can be combined and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention belongs, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as “at least one (or more than one) of A and (and) B, C”, it is combined with A, B, and C It may include one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include the case of 'connected', 'coupled' or 'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on “above (above) or under (below)” of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components. In addition, when expressed as “up (up) or down (down)”, the meaning of not only the upward direction but also the downward direction based on one component may be included.

Hereinafter, an optical device according to the present embodiment will be described.

The optical device is any one of a cell phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and a navigation device may include. However, the type of optical device is not limited thereto, and any device for taking an image or photo may be included in the optical device.

The optical device may include a body. The body may be in the form of a bar. Alternatively, the main body may have various structures such as a slide type, a folder type, a swing type, a swivel type, in which two or more sub-bodies are coupled to be relatively movable. The body may include a case (casing, housing, cover) forming an exterior. For example, the body may include a front case and a rear case. Various electronic components of an optical device may be embedded in a space formed between the front case and the rear case.

The optics may include a display. The display may be disposed on one surface of the main body of the optical device. The display may output an image. The display may output an image captured by the camera.

The optics may include a camera. The camera may include a Time of Flight (ToF) camera device. The ToF camera device may be disposed on the front side of the main body of the optics. In this case, the ToF camera device may be used for various types of biometric recognition such as user's face recognition and iris recognition for security authentication of optical devices.

Hereinafter, the configuration of the camera device or the ToF/distance measuring camera device according to the present embodiment will be described with reference to the drawings.

1 is a perspective view of a camera device according to an embodiment, FIG. 2 is a cross-sectional view taken along line AA′ in FIG. 1 , and FIG. 3 is an exploded perspective view of the camera device according to the embodiment.

1 to 3 , the camera device 10 according to the embodiment includes a light emitting unit 1 , a light receiving unit 2 , a connecting unit 3 , a main board 4 , an extension board 5 , and a connection board. (6) and a connector (7). And the camera device 10 according to the embodiment may include a controller. The control unit may be located in any one of the light emitting unit 1 , the light receiving unit 2 , the connect unit 3 , and the main board 4 . Hereinafter, the control unit will be described as a configuration disposed in the light emitting unit 1 .

Also, in the present specification, the camera device may be a concept having only one of the light emitting unit 1 and the light receiving unit 2 . Alternatively, the camera device may be a concept including a substrate (eg, the main substrate 4) electrically connected to any one of the light emitting unit 1 and the light receiving unit 2 .

First, the light emitting unit 1 may be a light emitting module, a light emitting unit, a light emitting assembly, or a light emitting device. The light emitting unit 1 may generate light or an optical signal and then irradiate it to the object. Hereinafter, optical or optical signals are used interchangeably. In this case, the light emitting unit 1 may generate and output an optical signal in the form of a pulse wave or a continuous wave. The continuous wave may be in the form of a sinusoid wave or a square wave.

And by generating the optical signal in the form of a pulse wave or a continuous wave, for example, the ToF camera device is inputted to the light receiving unit 2 of the ToF camera device after the optical signal output from the light emitting unit 1 and the optical signal are reflected from the object O. It is possible to detect the phase difference between the input lights. In this specification, the output light refers to an optical signal output from the light emitting unit 1 and incident on the object O, and the input light or reflected light is output from the light emitting unit 1 and reaches the object O. O) may mean an optical signal input to the ToF camera device after being reflected. Also, from the viewpoint of the object O, the output light may be incident light, and the input light may be reflected light.

The light emitting unit 1 irradiates the generated optical signal to the object O for a predetermined exposure period (integration time). Here, the exposure period means one frame period. In the case of generating a plurality of frames, the set exposure cycle is repeated. For example, when the ToF camera device captures an object at 20 FPS, the exposure period is 1/20 [sec]. And when 100 frames are generated, the exposure cycle may be repeated 100 times. Accordingly, the light source may also be emitted in a frame period.

Also, the light emitting unit 1 may generate a plurality of optical signals having different frequencies. The light emitting unit 1 may sequentially and repeatedly generate a plurality of optical signals having different frequencies. Alternatively, the light emitting unit 1 may simultaneously generate a plurality of optical signals having different frequencies.

The light emitting unit 1 may include a light source LS. The light source LS may generate light. The light source LS may output light. The light source LS may irradiate light. The light generated by the light source LS may be infrared rays having a wavelength of 770 nm to 3000 nm. Alternatively, the light generated by the light source LS may be visible light having a wavelength of 380 nm to 770 nm. The light source LS may include all of various elements that generate and output light. For example, the light source LS may include a Light Emitting Diode (LED) and a Vertical Cavity Surface Emitting Laser (VCSEL). For example, when the light source LS is a vertical resonance surface-emitting laser, a plurality of emitters may be arranged in a horizontal or vertical direction on a plane perpendicular to an optical axis. Furthermore, when light is output in the form of dots, the form of dots may correspond to the form in which the emitters are arranged. For example, when the emitter is 3X3 (width X length), the light intensity in the form of dots may be 3X3.

Also, the light source LS may include a plurality of light emitting diodes arranged according to a predetermined pattern. In addition, the light source LS may include an organic light emitting diode (OLED) or a laser diode (LD).

The light emitting unit 1 may include a light modulator for modulating light. The light source LS may generate an optical signal in the form of a pulse wave or a continuous wave by repeatedly flickering (on/off) at regular time intervals. The predetermined time interval may be a frequency of an optical signal. The blinking of the light source LS may be controlled by the light modulator. The light modulator may control blinking of the light source LS so that the light source LS generates an optical signal in the form of a continuous wave or a pulse wave. The light modulator may control the light source LS to generate an optical signal in the form of a continuous wave or a pulse wave through frequency modulation, pulse modulation, or the like. The light modulator may be located in the control unit. Accordingly, it should be understood that the controller can block (off or turn off) or provide (on) the output of the optical signal by the light source by controlling the light modulator, as will be described later.

The light emitting unit 1 may include a diffuser (not shown). The diffuser (not shown) may be a diffuser lens. A diffuser (not shown) may be disposed in front of the light source LS. Light emitted from the light source LS may pass through a diffuser (not shown) to be incident on the object O. The diffuser (not shown) may change the path of the light emitted from the light source LS. A diffuser (not shown) may diffuse the light emitted from the light source LS. The diffuser (not shown) may be located in the first optical unit or above the first optical unit, which will be described later.

Specifically, the light emitting unit 1 includes the above-described light source LS, the housing 110 , the first optical unit 120 , the first lens holder 130 , the driving magnet unit 140 and the driving coil unit 150 . It may include a driving unit including a driving unit, an elastic unit 160 , a side substrate 170 , and a control element SS.

First, the housing 110 may be located inside the cover 400 to be described later. The housing 110 may be coupled to a first lens holder 130 , a side substrate 170 , a driving coil unit 150 , and an elastic unit 160 , which will be described later.

The housing 110 may include a barrel accommodating part opened therein. The above-described first lens holder 130 and the driving coil unit 150 may be located in the barrel receiving unit.

The first optical unit 120 may be located in the housing 110 . The first optical unit 120 may be held by a first lens holder 130 to be described later, and may be coupled to the housing 110 through the first lens holder 130 . In addition, the first lens holder 130 may move in the housing 110 or in the base 200 along the optical axis direction. The first optical unit 120 may also move along the optical axis direction together with the first lens holder 130 .

The first optical unit 120 may include a lens and a first lens barrel accommodating a plurality of lenses. A lens may consist of a plurality of optical elements or lenses. For example, the first optical unit 120 may include a plurality of lenses.

Also, the first optical unit 120 may include a convex, concave, or collimator lens. For example, the collimator lens may include a plurality of lenses, and may have an angle of view (FoI) of 60 degrees to 120 degrees. Such a collimator lens may lower the divergence angle of light output from the light source. When the laser divergence angle of each aperture of the vertical resonance surface emitting laser (VCESL) as the light source is 20 to 25 degrees, the divergence angle of the light passing through the collimator lens may be 1 degree or less.

In addition, the first optical unit 120 may duplicate the optical signal output from the light source LS according to a preset replication pattern. Accordingly, the first optical unit 120 may include a diffractive optical element (DOE) or a diffuser lens. For example, the first optical unit 120 may include an optical member having a micro-scale or nano-scale structure.

An optical signal (output light) emitted from the light source LS toward the object may pass through the first optical unit 120 , that is, the lens and the first lens barrel. Also, the central axis of the first optical unit 120 or the first lens holder 130 and the optical axis of the light source LS may be aligned.

The first lens holder 130 may be coupled to the housing 110 . In addition, the first lens holder 130 may be fixed to the housing 110 . The first lens holder 130 may hold the first optical unit 120 made of a plurality of optical elements.

The first lens holder 130 may include a lens accommodating part 131 on which the first optical part 120 is seated. The first lens holder 130 may be moved up and down by a voice coil motor or the like, as will be described later. That is, the first lens holder 130 may vertically move along the optical axis direction by an actuator such as a voice coil motor. Accordingly, as will be described later, the light generated from the light source may be changed into a planar shape or a dotted shape while passing through the first lens holder 130 . In addition, the first lens holder 130 may include a magnet receiving groove 132 in which the driving magnet unit is seated. For example, the first lens holder 130 may be a bobbin of the first optical unit 120 .

In addition, a screw thread structure may be formed on a side surface of the lens accommodating part 131 for coupling with the first optical part 120 . Accordingly, the first optical unit 120 may move up and down in the housing 110 together with the first lens holder 130 by a driving unit to be described later.

In addition, the side substrate 170 may be coupled to the housing 110 . The side substrate 170 may be located in the substrate groove 112 located on the side of the housing 110 . Also, the side substrate 170 may be electrically connected to the main substrate 4 .

Also, the driving unit may include a driving magnet unit 140 and a driving coil unit 150 .

The driving magnet unit 140 may include a plurality of magnets. The plurality of magnets may be located in the magnet seating groove 132 located on the side of the first lens holder 130 .

The driving magnet unit 140 may vertically move the first lens holder 130 and the first optical unit 120 with respect to the housing 110 by electromagnetic interaction with the driving coil unit 150 to be described later. Accordingly, the separation distance from the lower light source LS to the first optical unit 120 and the first lens holder 130 may be increased or decreased. And, according to the above-described separation distance, the output light may have a light source shape of a planar shape (or a planar light source) or a dot shape (or a point shape light source, a dot pattern) with respect to an object.

The driving coil unit 150 includes a plurality of coils and may be located on a side surface of the housing 110 . Also, the driving coil unit 150 may be located inside the housing 110 . The driving coil unit 150 may be positioned to face the driving magnet unit 140 . For example, the driving coil unit 150 may be positioned to face at least a portion of the driving magnet unit 140 . Accordingly, when current is injected into the driving coil unit 150 , the first lens holder 130 may move due to electromagnetic interaction (eg, Lorentz force) between the driving coil unit 150 and the driving magnet unit 140 . .

The driving coil unit 150 may be located in each coil receiving unit 114 formed on the side surface of the housing 110 . The driving coil unit 150 may be electrically connected to the side substrate 170 . For example, the driving coil unit 150 may be electrically connected to the side substrate 170 through a wire or the like. And since the side substrate 170 is coupled to the housing 110 as described above, the driving coil unit 150 may also be seated in the coil receiving unit 114 formed on the side of the housing 110 to be coupled to the housing. A detailed description thereof will be given later.

The elastic part 160 may be disposed on the housing 110 . The elastic part 160 may be coupled to the first lens holder 130 and the housing 110 . The housing 110 may be fixed by being coupled to the main board 4 or the base 200 to be described later. Alternatively, the first lens holder 130 may move up and down with respect to the housing 110 by the Lorentz force described above. The elastic unit 160 may provide a preload for vertical movement of the first lens holder 130 or the first optical unit 120 . Accordingly, when the Lorentz force by the driving unit does not occur, the first lens holder 130 may maintain a predetermined position with respect to the housing 110 . In addition, even when Lorentz force is generated by the driving unit, since the positional relationship between the first lens holder 130 and the housing 110 is maintained within a predetermined range, the reliability of the camera device may be improved.

The control element SS may be electrically connected to the side substrate 170 . Also, the control element SS may be positioned on the side substrate 170 . In addition, the control element SS may be disposed to be spaced apart from the driving magnet unit 140 by a predetermined distance.

The control element SS may include a Hall sensor or a Hall IC. The control element SS may sense the magnetic force of the driving magnet unit 140 .

The control element SS according to the embodiment may sense the strength of the magnetic field generated by the driving magnet unit and output position information about the light source LS of the first lens holder 130 or the first optical unit 120 . . Accordingly, the control unit determines the defect of the first optical unit 120 or the first lens holder 130 based on the position information of the control element SS and controls the output of the light source LS in response to the determination result ( can be turned on/off).

In an embodiment, the control element SS may include a plurality of control elements. The control element SS may include two sensors. The control element SS may detect movement of the first lens holder 130 and the first optical unit 120 in the optical axis direction. In this specification, the Z-axis direction is an optical axis direction or a vertical direction as the third direction. And the X-axis direction is a direction perpendicular to the Z-axis direction, and in the embodiment, the direction from the light emitting unit toward the light receiving unit is the first direction. And the Y-axis direction is a direction perpendicular to the X-axis direction and the Z-axis direction, and is a second direction. It will be described below based on this.

Furthermore, the light emitting unit 1 may further include a photodetector PD. The photodetector PD may include, for example, a light-receiving device disposed in a Charged Coupled Device (CCD), a Complementary Metal Oxide Semiconductor (CMOS) linear image sensor, or a photodiode array. The light emitted from the light source LS is reflected by the first optical unit 120 , the first lens holder 130 , and the like, and the photodetector PD may receive the above-described reflected light. Also, the photodetector PD may output an output value indicating the detected amount according to the amount of received light. For example, the photodetector PD may output an output value corresponding to the amount of light received. That is, the output value may also increase as the amount of received light increases. In addition, the controller may control the light source LS by detecting an abnormal state of the first optical unit 120 and the light source LS based on the output value received from the photodetector PD. A detailed description thereof will be given later.

The light receiving unit 2 may be a light receiving module, a light receiving unit, a light receiving assembly, or a light receiving device, and may be a component of a camera device. The light receiving unit 2 may receive light (reflected light) emitted from the light emitting unit 1 and reflected from the object, and may convert the received light into an electrical signal.

The light receiving unit 2 may generate input light corresponding to the light signal output from the light emitting unit 1 . The light receiving unit 2 may be disposed side by side with the light emitting unit 1 . The light receiving unit 2 may be disposed next to the light emitting unit 1 . The light receiving unit 2 may be disposed in the same direction as the light emitting unit 1 . With this configuration, the reception efficiency of the input light can be improved in the light receiving unit 2 .

The light receiving unit 2 may receive the reflected light during the exposure period and generate an electric signal therefor. In an embodiment, the camera device may perform direct distance measurement or indirect distance measurement through the light receiving unit 2 . The light receiving unit 2 may have a structure separate from the light emitting unit 1 .

First, in the case of direct distance measurement, the camera device may measure the distance to the object through a time difference between a reception time of reflected light and an output time of output light.

And in the case of non-direct distance measurement, the camera device may measure the distance to the object through synthesis between the reference signal and the reflected light, which are synchronized with respect to the output light and have different phases.

Direct distance measurement is easier to measure long distance than non-direct distance measurement, the switching speed is nanoseconds, so the measurement speed can be relatively fast, and it is strong against multiple echoes. In contrast, non-direct distance measurement has a slower switching speed than direct distance measurement, but it is easy to measure close range, can be applied to multiple pixels, and has the advantage of small data volume for distance measurement.

The camera device according to the embodiment performs the above-described direct time-of-flight (direct-TOF) (or corresponding to direct distance measurement) or indirect-TOF (or non-direct distance measurement). can do. That is, the camera device 10 may be a camera device or a camera device capable of measuring a distance.

The light receiving unit 2 may include a second lens barrel 320 , a second optical unit 310 , and an image sensor IS.

The second lens barrel 320 may be coupled to a base 200 to be described later. The second lens barrel 320 may be coupled to a base to be described later by screw coupling or the like. Accordingly, the second lens barrel 320 may include a screw thread located on the side. The second lens barrel 320 may be formed integrally with the second optical unit 310 . However, the present invention is not limited thereto.

The second optical unit 310 may be coupled to the second lens barrel 320 . The second optical unit 310 may be coupled to the base 200 through the second lens barrel 320 . The second optical unit 310 may be coupled to the second lens barrel 320 through various coupling methods. The second optical unit 310 may be formed through screw coupling with the second lens barrel 320 as described above.

The second optical unit 310 may include a plurality of lenses. In addition, the second optical unit 310 may be aligned with the lower image sensor IS. Accordingly, the reflected light passing through the second optical unit 310 may be provided to the image sensor IS.

The image sensor IS may detect reflected light. In addition, the image sensor IS may detect the reflected light and output it as an electrical signal. In an embodiment, the image sensor IS may detect light having a wavelength corresponding to the wavelength of light output from the light source LS. For example, the image sensor IS may detect infrared rays. Alternatively, the image sensor IS may detect visible light. The image sensor IS may include various image sensors that sense light.

In an embodiment, the image sensor IS is a pixel array that receives light passing through the second lens barrel 320 and the second optical unit 310 and converts it into an electrical signal corresponding to the light, a plurality of pixels included in the pixel array It may include a driving circuit for driving the pixels and a readout circuit for reading an analog pixel signal of each pixel. The readout circuit may generate a digital pixel signal (or an image signal) through analog-to-digital conversion by comparing the analog pixel signal with a reference signal. Here, the digital pixel signal of each pixel included in the pixel array constitutes an image signal, and as the image signal is transmitted in units of frames, it may be defined as an image frame. That is, the image sensor may output a plurality of image frames.

Furthermore, the light receiving unit 2 may further include an image combining unit. The image synthesizing unit may include an image processor that receives an image signal from the image sensor IS and processes the image signal (eg, interpolation, frame synthesis, etc.). In particular, the image synthesizing unit may combine image signals (low resolution) of a plurality of frames into an image signal (high resolution) of one frame. That is, the image synthesizer may synthesize a plurality of image frames included in the image signal received from the image sensor IS, and generate the synthesized result as a composite image. The composite image generated by the image synthesizing unit may have a higher resolution than a plurality of image frames output from the image sensor IS. That is, the image synthesizing unit may generate a high-resolution image through a super resolution (SR) technique. The plurality of image frames may include image frames generated by changing different optical paths by movement of the filters F and F'. Such an image synthesizing unit may be located inside or outside the light receiving unit 2 .

The filters F and F' may be coupled to the base 200 . The filters F and F' may be disposed between the first lens holder 130 and the light source LS or between the second lens barrel 320 and the image sensor IS. For example, filters F and F' may be disposed in each of the light emitting unit 1 and the light receiving unit 2 . Accordingly, the filters F and F' may be disposed on the optical path between the object and the image sensor IS or the optical path between the object and the light source LS. The filters F and F' may filter light having a predetermined wavelength range.

The filters F and F' can pass light of a specific wavelength. That is, the filters F and F' may block by reflecting or absorbing light other than a specific wavelength. For example, the filters F and F' may pass infrared rays and block light of wavelengths other than infrared rays. Alternatively, the filters F and F' may pass visible light and block light of a wavelength other than visible light. The filters F and F' may be infrared rays band pass filters. Accordingly, the filters F and F' can pass only infrared light. Alternatively, the optical member may be a separate focus fixed lens or a variable focus lens (ex: liquid lens) separated from the lens module.

In addition, the filters F and F' may suppress the inflow of foreign substances into the light source LS, the photodetection element PD, and the image sensor IS in each of the light emitting unit 1 and the light receiving unit 2 . Accordingly, the filters F and F' may improve the reliability of the camera device.

Also, the filters F and F' are movable. In an embodiment, the filters F and F' may be tilted. When the filters F and F' are tilted, the optical path can be adjusted. When the filters F and F' are tilted, the path of light incident to the image sensor IS may be changed. For example, the filter F' in the light receiving unit 2 may change a field of view (FOV) angle or a direction of the FOV of the incident light. In addition, in the embodiment, the filters F and F' may change a path through which light enters as they are tilted to enable high-resolution Time of Flight (ToF).

The cover 400 may be a bracket. The cover 400 may include a 'cover can'. The cover 400 may be disposed to surround the light emitting unit 1 and the light receiving unit 2 . The cover 400 may be coupled to the housing 110 and the base 200 . The cover 400 may accommodate the light emitting unit 1 and the light receiving unit 2 . Accordingly, the cover 400 may be located at the outermost side of the camera device.

In addition, the cover 400 may be a non-magnetic material. In addition, the cover 400 may be formed of a metal. Also, the cover 400 may be formed of a metal plate.

The cover 400 may be connected to the ground portion of the main board 4 . Through this, the cover 400 may be grounded. And the cover 400 may block electromagnetic interference (EMI). In this case, the cover 400 may be referred to as an 'EMI shield can'. The cover 400 is a finally assembled component and may protect the product from external impact. The cover 400 may be formed of a material having a thin thickness and high strength.

Further, in the camera device 10 according to the embodiment, the light emitting unit 1 and the light receiving unit 2 may be disposed on the main board 4 (PCB, Printed Circuit Board). The main substrate 4 may be electrically connected to the light emitting unit 1 and the light receiving unit 2 .

Also, in the camera device 10 , the connector 3 may be electrically connected to the main board 4 . The connecting part 3 may be connected to the configuration of the optical device. The connecting unit 3 may include a connector 7 that is connected to the configuration of the optical device. The connector part 3 may include an extension board 5 on which the connector 7 is disposed and connected to the connection board 6 . The extension substrate 5 may be a PCB, but is not limited thereto.

In addition, in the camera device, the connecting board 6 may connect the main board 4 and the extension board 5 of the connecting part 3 . The connecting substrate 6 may have flexibility. The connection board 6 may be a flexible printed circuit board (FPCB, Flexible PCB).

In addition, the main substrate 4, the connecting substrate 6, and the extension substrate 5 may be formed integrally or separately.

In addition, the above-described light emitting unit 1 and light receiving unit 2 may be positioned on the main substrate 4 , and the light emitting unit 1 and the light receiving unit 2 may be electrically connected to the main substrate 4 .

The camera device may include a reinforcing plate 8 . The reinforcing plate 8 may include a stiffener. The reinforcing plate 8 may be disposed on the lower surface of the main substrate 4 . The reinforcing plate 8 may be formed of a SUS.

Furthermore, the light receiving unit 2 may include a lens driving device. That is, the light receiving unit 2 may include a voice coil motor (VCM). In addition, the light receiving unit 2 may include a lens driving motor. In addition, the light receiving unit 2 may include a lens driving actuator. With this configuration, as described above, the light receiving unit 2 according to the embodiment can tilt the filter F′. And as the filter F' is tilted, the optical path of the input light passing through the filter F' may move repeatedly according to a predetermined rule. Accordingly, the light receiving unit 2 outputs high-resolution image information using a plurality of image information converted by the image sensor according to the tilt of the filter F', and the output image information may be provided to an external optical device. .

4 is a perspective view illustrating a housing of the light emitting unit according to the embodiment, FIG. 5 is a top view of the housing of the light emitting unit according to the embodiment, and FIG. 6 is another perspective view of the housing of the light emitting unit according to the embodiment.

4 to 6 , the housing 110 of the light emitting unit according to the embodiment includes a housing hole 111 , a substrate groove 112 , a hole 113 , a coil receiving unit 114 , and a mounting protrusion 115 . may include

The housing hole 111 may be located in the center of the housing 110 . The first optical unit, the first lens holder, and the driving unit may be seated in the housing hole 111 .

In an embodiment, the housing 110 may include a housing side 110k1 , a second housing side 110k2 , a third housing side 110k3 , and a fourth housing side 110k4 . The housing side portion 110k1 to the fourth housing side portion 110k4 refer to portions positioned on each side of the housing 110 . The housing side 110k1 is used interchangeably with the first housing side.

Specifically, the housing side 110k1 and the second housing side 110k2 may be disposed to face each other. In addition, the housing side part 110k1 and the second housing side part 110k2 may be spaced apart from each other in the second direction (Y-axis direction). That is, the housing side part 110k1 and the second housing side part 110k2 may be symmetrically disposed in the first direction (X-axis direction) or in the third direction (Z-axis direction).

The third housing side 110k3 and the fourth housing side 110k4 may be disposed to face each other. Also, the third housing side 110k3 and the fourth housing side 110k4 may be positioned between the housing side 110k1 and the second housing side 110k2 . In addition, the third housing side part 110k3 and the fourth housing side part 110k4 may be spaced apart from each other in the first direction (X-axis direction). That is, the third housing side part 110k3 and the fourth housing side part 110k4 may be symmetrically disposed in the second direction (Y-axis direction) or the third direction (Z-axis direction).

In an embodiment, the substrate groove 112 may be located on a side of the housing 110 having a maximum separation distance from the light receiving part. Accordingly, the substrate groove 112 may be located in the third housing side portion 110k4 of the housing 110 . With this configuration, the influence of electromagnetic waves generated by an electrical signal or the like in the light receiving unit on driving the light emitting unit can be minimized.

In an embodiment, the housing 110 may have a rectangular shape on a plane XY. However, the present invention is not limited thereto and may be formed in various shapes.

In addition, a coupling protrusion for coupling with the side substrate may be positioned in the substrate groove 112 . The coupling protrusion may extend outward from the outer surface of the third housing side 110k3 of the housing 110 . In addition, a coupling hole is provided in the side substrate, and the coupling protrusion is inserted into the coupling hole so that the side substrate and the housing 110 can be coupled to each other.

The hole 113 may overlap the substrate groove 112 in a first direction (X-axis direction) and a second direction (Y-axis direction).

In an embodiment, the hole 113 may pass through the outer surface 110b and the inner surface 110a of the housing. Accordingly, the hole 113 may be located in the third housing side 110k3. The hole 113 may be located below the seating part 114 , which will be described later. Accordingly, even if the control element is seated in the hole 113 , it may not overlap the driving coil unit in the first direction (X-axis direction) or the second direction (Y-axis direction). In addition, while the control element is disposed to face the magnet in the hole 113 , it may be easily electrically connected to the side substrate. In addition, the position of the control element coupled to the housing 110 is fixed, so that the position of the driving magnet unit can be accurately measured.

The coil mounting part 114 may be located on the inner surface 110a of the housing 110 . In an embodiment, the coil receiving part 114 may extend inwardly from the inner surface 110a of the housing 110 . Accordingly, the maximum separation distance W1 facing the inner surface 110a of the housing 110 may be greater than the maximum separation distance W2 facing the coil receiving unit 114 . And in this specification, the inner side may be a direction toward the central axis HX of the housing hole 111 . Alternatively, it may be a direction from the housing toward the first optical unit. And the outer side may be a direction from the first optical unit toward the housing in the opposite direction to the inner side. The central axis HX of the housing hole 111 passes through the intersection of the bisectors that bisect the housing 110 in the first direction (X-axis direction) and the second direction (Y-axis direction), and in the third direction (Y-axis direction) ) may be parallel to the axis.

In addition, at least one groove IH may be positioned on the inner surface 110a of the housing 110 . An adhesive member such as epoxy may be applied to the at least one groove IH. Through this, coupling between the coil on the coil receiving part 114 and the housing 110 may be achieved.

In addition, the upper surface of the coil receiving part 114 may be flat. Accordingly, the driving coil unit may be easily seated, and vertical movement of the first lens holder may be accurately performed according to electromagnetic interaction between the driving coil unit and the driving magnet.

In addition, the coil seating portion 114 may include a seating groove 114h convex toward the bottom (or concave toward the top) at the third housing side 110k3 . The seating groove 114h may be positioned to correspond to the hole 113 described above, and may be a groove formed downward from the coil seating part 114 . The seating groove 114h may be convex toward the bottom and concave toward the top.

A control element to be described later may be seated in the seating groove 114h. Accordingly, the control element may at least partially overlap the driving coil unit in the third direction (Z-axis direction). A detailed description thereof will be given later.

Also, the driving coil unit may have a closed loop shape as will be described later. Accordingly, the coil seating part 114 may also have a closed loop shape corresponding to the shape of the driving coil part.

The mounting protrusion 115 may be connected to the coil receiving unit 114 and located inside the coil receiving unit 114 . Accordingly, since the seating protrusion 115 is located inside the coil receiving unit 114 , it may at least partially overlap the first lens holder located inside the coil receiving unit 114 . Accordingly, the seating protrusion 115 may serve as a stopper for vertical movement of the first lens holder.

In addition, the upper surface of the seating protrusion 115 may have a step difference from the coil seating part 114 . That is, the upper surface of the seating protrusion 115 may be located above the coil seating part 114 . With this configuration, the seating protrusion 115 can easily prevent the driving coil unit from being deviating from the coil seating part 114 .

For example, the coil receiving part 114 may be formed of a jaw extending inward from the inner surface of the housing 110 . In this specification, the inner side may be a direction from the housing toward the first optical unit, and the outer side may be a direction from the first optical unit toward the housing in a direction opposite to the inner side.

7 is a view illustrating a first optical unit and a first lens holder of a light emitting unit according to an embodiment, FIG. 8 is a perspective view of a first lens holder of a light emitting unit according to an embodiment, and FIG. 9 is a light emitting unit according to an embodiment It is a cross-sectional view of a first lens holder, a housing, and a driving coil part.

7 to 8 , the first optical unit 120 of the light emitting unit may be inserted into the lens receiving unit 131 of the first lens holder 130 . As described above, the first optical unit 120 may include a plurality of lenses. And the first optical unit 120 may include a screw thread located on the outer surface. The first lens holder 130 may also have a screw groove corresponding to the screw thread of the first optical unit 120 on the inner surface. Accordingly, the first optical unit 120 and the first lens holder 130 may be screwed to each other.

In an embodiment, the first lens holder 130 may include not only the above-described lens accommodating part 131 , but also magnet seating grooves 132h1 to 132h4 . The magnet seating grooves 132h1 to 132h4 may be plural. In an embodiment, the number of magnet seating grooves is four, and may be located on each outer surface of the first lens holder 130 .

In an embodiment, the first lens holder 130 is disposed between the first outer surface 132a and the second outer surface 132b facing each other, and the first outer surface 132a and the second outer surface 132b facing each other. It may be located on the third outer surface (132c) and the fourth outer surface (132d) located in the.

And the first outer surface 132a is opposite to the above-described housing side, the second outer surface 132b is opposite to the above-described second housing side, and the third outer surface 132c is opposite to the above-described third housing side Opposite, the fourth outer surface 132d may face the fourth housing side described above.

In addition, the plurality of magnet seating grooves may include a first magnet seating groove 132h1 to a fourth magnet seating groove 132h4. The first magnet seating groove 132h1 may be located on the first outer surface 132a. And the second magnet seating groove (132h2) may be located on the second outer surface (132b). In addition, the third magnet seating groove 132h3 may be located on the third outer surface 132c. And the fourth magnet seating groove (132h4) may be located on the fourth outer surface (132d).

A magnet of a driving magnet unit to be described later may be seated in each of the first magnet seating grooves 132h1 to the fourth magnet seating grooves 132h4.

In addition, the first magnet seating groove 132h1 and the second magnet seating groove 132h2 may face each other, and the third magnet seating groove h3 and the fourth magnet seating groove 132h4 may be positioned to face each other. Furthermore, the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4 may have the same shape. With this configuration, the electromagnetic force generated by the magnet seated in the magnet seating groove is constantly generated upward or downward, so that the movement of the first lens holder upward or downward can be performed in a balanced manner without being inclined to one side.

According to an exemplary embodiment, the area (on the XZ or YZ plane) of the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4 may decrease toward the outside. In addition, the length L1 of the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4 at the outermost side may be smaller than the length L2 at the innermost side. With this configuration, a phenomenon in which each of the plurality of magnets, which will be described later, is separated from the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4 can be suppressed. In other words, the coupling force between the plurality of magnets and the plurality of magnet seating grooves may be improved.

Furthermore, the first lens holder according to the embodiment may further include an injection hole eh positioned under the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4. The injection hole eh may be located under the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4. For example, the injection hole eh may be located at the bottom of the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4. In addition, the injection hole eh may be positioned to overlap the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4 in the third direction (Z-axis direction). Accordingly, when the adhesive member is injected through the injection hole eh, the adhesive member may move between the magnet seating groove and the magnet. That is, the adhesive member may be spread over the entire area between the magnet and the magnet seating groove through injection pressure and capillary action. Accordingly, the coupling force between the magnet and the magnet seating groove is further improved, so that the magnet can be prevented from being separated from the magnet seating groove.

Also, a barrel groove gr may be positioned between the magnet seating grooves adjacent to each other in the first magnet seating groove 132h1 to the fourth magnet seating groove 132h4. According to an embodiment, the barrel groove gr may be positioned on the first first line VL1 (VX1) and the second first line VL1 (VX2). In addition, the barrel groove gr may be bisected by a first first line VL1 (VX1) and a second first line VL1 (VX2).

Also, in the embodiment, the first line VL1 (VX1) bisects the second magnet seating groove 123h2 and the fourth magnet seating groove 132h4, and the first magnet seating groove 132h1 and the third magnet The seating groove 132h3 is halved. And the second first line VL1 (VX2) bisects the first magnet seating groove 132h1 and the fourth magnet seating groove 132h4, the third magnet seating groove 132h3 and the second magnet seating groove 132h2 ) can be halved. In addition, an intersection of the first first line VL1 (VX1) and the second first line VL1 (VX2) may be located on the central axis HX of the above-described housing hole.

The barrel groove gr may be located at a lower portion of the first lens holder 130 . Accordingly, the first lens holder 130 may have a structure in which the lower edge is opened by the barrel groove gr. Accordingly, the mounting projection of the housing described above may be located in the barrel groove (gr). Accordingly, the first lens holder 130 may be supported by the seating protrusion.

Referring to FIG. 9 , the barrel groove gr may overlap the seating protrusion 115 of the housing 110 in the third direction (Z-axis direction). Accordingly, even if the first lens holder 130 moves in the third direction (Z-axis direction), the lower movement may be blocked by the seating protrusion 115 of the housing 110 . Accordingly, even when the first lens holder moves, a collision between the control element positioned in the hole and the first lens holder can be prevented. Accordingly, the reliability of the device may be improved.

10 is a view illustrating a driving magnet unit and a driving coil unit of the light emitting unit according to the embodiment, FIG. 11 is a view for explaining the driving of the driving magnet unit and the driving coil unit of the light emitting unit according to the embodiment, and FIG. It is a top view of a driving magnet unit, a driving coil unit, a side substrate, and a control element of the light emitting unit according to an embodiment, and FIG. 13 is a view for explaining a positional relationship between the driving coil unit and the driving magnet unit according to the embodiment.

10 to 12 , the driving unit according to the embodiment may include a driving magnet unit 140 and a driving coil unit 150 . The driving magnet unit 140 may include a plurality of magnets.

In an embodiment, the driving magnet unit 140 may include a first magnet 141 to a fourth magnet 144 . The first magnet 141 and the second magnet 142 may be positioned to face each other. For example, the first magnet 141 and the second magnet 142 may be symmetrically disposed with respect to the first direction (X-axis direction).

The third magnet 143 and the fourth magnet 144 are positioned to face each other, and may be positioned between the first magnet 141 and the second magnet 142 . For example, the third magnet 143 and the fourth magnet 144 may be symmetrically disposed with respect to the second direction (Y-axis direction).

The first magnet 141 to the fourth magnet 144 may be respectively located in the above-described first magnet seating groove to the fourth magnet seating groove. The first magnet 141 to the fourth magnet 144 may be spaced apart from each other by the same distance based on the above-described central axis HX. Accordingly, the current flowing through the driving coil unit 150 and the magnetic force interact in a balanced way, so that the first lens holder can be moved in a balanced manner without being inclined to one side by the electromagnetic force.

And the first magnet 141 to the fourth magnet 144 may be unipolarly magnetized in each magnet seating groove. With this configuration, a balanced electromagnetic force can be generated only by the driving coil unit through which current flows in a single direction.

Alternatively, the first magnet 141 to the fourth magnet 144 may be positively magnetized in each magnet seating groove. In this case, as will be described later, each coil corresponding to the first magnet 141 to the fourth magnet 144 may exist individually. In this case, the movement of the first lens holder may be more precisely controlled by controlling the amount of current flowing through each coil.

As described above, the driving coil unit 150 may have a closed loop shape on the plane XY. Accordingly, the driving coil unit 150 may surround the driving magnet unit 140 . That is, since the driving coil unit 150 has a closed loop shape, the camera device may control each magnet of the driving magnet unit 140 with one current. With this configuration, the phenomenon of being tilted with respect to the third direction by the plurality of magnets can be prevented. Accordingly, the upper surface of the first optical unit may move in a direction opposite to the light receiving unit (eg, in a direction opposite to the first direction) such that the first optical unit may not be inclined. In addition, a decrease in the efficiency of the input light input to the light receiving unit according to the inclination may also be suppressed.

The driving coil unit 150 may be seated on the above-described coil receiving unit. In addition, the driving coil unit 150 may overlap the driving magnet unit 140 at least partially in the first direction (X-axis direction) or in the second direction (Y-axis direction).

Also, the driving coil unit 150 may be disposed to surround the driving magnet unit 140 . That is, the driving magnet unit 140 may be located on a closed loop of the driving coil unit 150 .

In addition, when a current flows through the driving coil unit 150 , the first lens holder and the driving magnet unit 140 may move in the third direction (Z-axis direction) by electromagnetic force.

For example, a current may flow in the driving coil unit 150 in a counterclockwise direction. And the first magnet 141 to the fourth magnet 144 may generate a magnetic field in an outward direction. Based on this, the movement of the first lens holder by electromagnetic force will be described below.

At this time, the magnetic field B1 is generated by the first magnet 141 in a direction opposite to the second direction, and the driving coil unit 150 is directed in a direction opposite to the first direction in a region facing the first magnet 141 . A current I1 flows through Accordingly, the electromagnetic force F1 is generated in a direction opposite to the third direction (Z-axis direction) by the magnetic field B1 and the current I1.

In addition, the magnetic field B2 is generated in the second direction by the second magnet 142 , and the current I2 flows in the driving coil unit 150 in the first direction in the region facing the second magnet 142 . . Accordingly, the electromagnetic force F2 is generated in a direction opposite to the third direction (Z-axis direction) by the magnetic field B2 and the current I2.

In addition, a magnetic field B3 is generated in a direction opposite to the first direction by the third magnet 143 , and the driving coil unit 150 generates a current I3 in a second direction in a region facing the third magnet 143 . ) flows. Accordingly, the electromagnetic force F3 is generated in a direction opposite to the third direction (Z-axis direction) by the magnetic field B3 and the current I3.

In addition, the magnetic field B4 is generated in the first direction by the fourth magnet 144 , and the driving coil unit 150 generates a current I4 in a direction opposite to the second direction in the region facing the fourth magnet 144 . ) flows. Accordingly, the electromagnetic force F4 is generated in a direction opposite to the third direction (Z-axis direction) by the magnetic field B4 and the current I4. At this time, the first lens holder may move in the third direction (Z-axis direction) or upward by the electromagnetic forces F1 to F4. For example, since the coil coil unit is fixed to the housing, the electromagnetic forces F1 to F4 may act on the movable driving magnet. That is, when the electromagnetic forces F1 to F4 are generated in a direction opposite to the third direction (Z-axis direction), the driving magnet unit 140 may move in the third direction (axial direction).

In addition, when a current flows in the driving coil unit 150 in a clockwise direction, the first lens holder may move in a direction opposite to the third direction or downward.

Also, the driving coil unit 150 may be spaced apart from the driving magnet unit 140 by a first separation distance dd1 . The separation distance dd1 may be 70 μm to 90 μm. By such a configuration, ease of assembly is ensured, and the movement of the first lens holder according to the strength of the electromagnetic force can be easily controlled. Furthermore, the electromagnetic force between the magnet and the coil may be 0.002 mN/mA when the separation distance dd1 is 90 μm.

Also, one end of the driving coil unit 150 may be connected to a first wire w1 and a second wire w2 for electrically connecting to the side substrate 170 . The first wire w1 and the second wire w2 are electrically connected to the side substrate 170 , and in particular, disposed at a position corresponding to the side substrate 170 , so that electrical resistance can be minimized. Accordingly, a decrease in accuracy due to the resistance may be prevented and power efficiency may be improved.

Also, the first wire w1 and the second wire w2 may be connected to one end and the other end of the driving coil unit 150 made of a coil, respectively.

Accordingly, a predetermined current is injected into the driving coil unit 150 through the first wire w1 and the second wire w2 according to the control signal received to the side substrate 170 , and the first The lens holder can be moved by electromagnetic force. Accordingly, driving stability may be improved by disposing the side substrate 170 adjacent to the driving unit of the light emitting unit.

In addition, since a rectifier element (eg, a capacitor) is disposed on the side substrate 170 , noise of the current supplied to the driving coil unit may be removed by the rectifier element. Accordingly, the movement of the first lens holder can be accurately performed. In addition, since the rectifying element or the like is not disposed on the main board, the size of the camera device can be easily achieved.

In addition, the side substrate 170 may include a terminal portion disposed below and electrically connected to the main substrate. The terminal unit may be electrically connected to the main board through soldering or the like. With this configuration, a control signal such as a current may be transmitted/received between the main board and the side board.

In addition, the control element SS may be mounted on the side substrate 170 . The control element SS may be formed integrally with the side substrate. The control element SS may be located below the driving coil unit 150 . For example, the control element SS may be disposed below the lowermost end of the driving coil unit 150 . In addition, at least a portion of the control element SS may be positioned to overlap the driving coil unit 150 in the third direction (Z-axis direction). Accordingly, the control element SS may accurately sense the strength of the magnetic force from the driving magnet unit 140 located inside the driving coil unit 150 . Also, in the camera device according to the embodiment, the control element SS detects the magnetic force generated from the driving magnet unit without a separate magnet to calculate the position of the first lens module or provide a signal indicating the position. Accordingly, the compactness of the light emitting unit can be easily achieved.

In addition, the control element SS and the driving magnet unit, in particular, the third magnet may have a predetermined separation distance from each other. This separation distance may be 0.44 mm to 0.66 mm. With this configuration, the magnetic force or the detection value sensed by the control element corresponding to the position of the first lens module may be linear. Thereby, the accuracy of the position sensing of the control element can be improved.

In addition, the height T1 in the third direction (Z-axis direction) of the driving coil unit 150 may be smaller than the height T2 in the third direction (Z-axis direction) of each magnet or the driving magnet unit. Due to this configuration, the driving coil unit 150 moves with the driving magnet unit 140 in the first direction (X-axis direction) even when the first lens holder and the driving magnet unit 140 move in the third direction (Z-axis direction). and in the second direction (Y-axis direction).

Referring to FIG. 13 , when the first lens holder is located at the lowermost portion (hereinafter referred to as 'lowest driving'), the driving coil unit 150 and the driving magnet unit 140 move in the third direction (Z-axis direction). It may be superimposed on a direction perpendicular to or on the plane (XY). Alternatively, during the lowest driving, the upper surface of the driving coil unit 150 may be located at least lower than the upper surface of the driving magnet unit 140 .

Furthermore, even when the first lens holder is positioned at the top (hereinafter referred to as 'highest driving'), the driving coil unit 150 and the driving magnet unit 140 may overlap in the XY phase. Alternatively, the lower surface of the driving coil unit 150 may be positioned at least above the lower surface of the driving magnet unit 140 during the highest driving.

In other words, the driving coil unit 150 according to the embodiment is perpendicular to the driving magnet unit 140 and the third direction (Z-axis direction) even when the driving magnet unit 140 is moved (eg, the lowest driving to the highest driving). It can be nested in one direction.

Also, the first center or first central axis Z1 that bisects the driving coil unit 150 in the third direction may be located in the first magnet region ZP1 of the driving magnet unit 140 .

In an embodiment, the driving magnet unit 140 may include a first magnet region ZP1 and a second magnet region ZP2. The first magnet area ZP1 may be located above the second magnet area ZP2 , and the second magnet area ZP2 may be located below the first magnet area ZP1 . The first magnet region ZP1 and the second magnet region ZP2 may be divided based on a second center or a second central axis Z2 that bisects the driving magnet unit 140 in the third direction.

In this case, the first central axis Z1 of the driving coil unit 150 may be positioned on the first magnet region ZP1 during the lowest driving to the highest driving. According to this configuration, it is possible to improve the magnitude of the electromagnetic force generated between the driving unit, that is, the driving magnet unit 140 and the driving coil unit 150 during the lowest driving to the highest driving.

Furthermore, the current applied to the driving coil unit may be greater during the highest driving compared to the lowest driving. However, according to the embodiment, the separation distance between the first central axis Z1 and the second central axis Z2 may be smaller during the highest driving compared to the lowest driving. Accordingly, it is possible to improve energy efficiency by reducing the amount of current applied to the driving coil unit during peak driving.

According to this configuration, an overlapping area between the driving coil unit 150 and the driving magnet unit 140 on the XY plane may be constant. Accordingly, the electromagnetic force generated by the driving coil unit 150 and the driving magnet unit 140 is minimized due to the position between the driving coil unit 150 and the driving magnet unit 140 (in particular, the position in the Z-axis direction). can do. That is, the driving or movement of the first lens holder by the electromagnetic force may be linear with the amount of change in the current. In other words, the movement of the first lens holder can be accurately performed.

Also, in the lowest driving state, a region in which the driving coil unit 150 overlaps the first magnet region ZP1 in a direction perpendicular to the optical axis or the third direction (Z-axis direction) may be larger than a non-overlapping region. Furthermore, when the driving coil unit 150 is driven at its highest, a region in which the driving coil unit 150 overlaps the first magnet region ZP1 and the optical axis or in a direction perpendicular to the third direction (Z-axis direction) is the second magnet region ZP2 and the optical axis or It may be larger than a region overlapping in a direction perpendicular to the third direction (Z-axis direction). In addition, in the case of the highest driving, the lowermost portion of the driving coil unit 150 may be located above the lowermost portion of the driving magnet unit 140 .

14 is a view showing one side of the side substrate of the light emitting unit according to the embodiment, and FIG. 15 is a view showing the other side of the side substrate of the light emitting unit according to the embodiment.

14 to 15 , the side substrate 170 may have one side and the other side facing the one side and contacting the housing.

The side substrate 170 may include first and second conductive parts EC1 and EC2 connected to the first and second wires of the driving coil part on one side surface. And the side substrate 170 may include a coupling hole 170a on the other side. The coupling hole 170a may be coupled to the coupling protrusion of the housing as described above. Accordingly, the side substrate 170 may be coupled to the side surface of the housing.

In addition, the control element SS may be positioned on the other side of the side substrate 170 . The control element SS may be seated on the other side of the side substrate 170 and inserted thereinto.

16 is a top view of a first lens holder, a driving magnet part, a driving coil part, a housing, a side substrate, and a control element of the light emitting part according to the embodiment, and FIG. 17 is a cross-sectional view taken along line ZZ' in FIG. 16 , and FIG. 18 is a cross-sectional view taken along QQ' in FIG. 16, and FIG. 19 is a cross-sectional view taken along line YY' in FIG.

16 to 19 , in the housing 110 according to the embodiment, the hole 113 and the seating groove 114h may overlap in the first direction (X-axis direction). And, as described above, the hole 113 and the seating groove 114h may be located in the third housing side 110k3 having the largest minimum separation distance from the light receiving part in the housing.

In addition, the side substrate 170 may include the first and second conductive portions disposed on the outer surface, and may include the control element SS disposed on the inner surface.

And the control element SS may be seated in the hole 113 . Also, the control element SS may at least partially overlap the seating groove 114h. In addition, the control element SS may be located below the coil receiving unit 114 , that is, below the driving coil unit 150 .

Also, the control element SS according to the embodiment may overlap the third magnet 143 facing the third housing side 110k3 in at least a first direction (X-axis direction). In addition, the seating groove 114h is positioned between the control element SS and the third magnet 143 , and is opened so that the control element SS can easily sense the magnetic force generated from the third magnet 143 . .

Also, the control element SS may at least partially overlap the driving coil unit 150 in the third direction (Z-axis direction) (OV). Accordingly, when the coupling member EX such as epoxy is applied to the third housing side 110k3 , the coupling member EX may be positioned on the upper surface SSa of the control element SS. Accordingly, the upper surface SSa of the control element SS and the upper surface of the hole 113 may be coupled to each other through the coupling member. In other words, the position of the driving coil unit 150 may be guided along the coil receiving unit 114 , and the position of the control element SS may be guided by the hole 113 and the mounting groove 114h. Accordingly, the control element SS and the driving coil unit 150 may be precisely disposed at the designed positions. Accordingly, the camera device according to the embodiment may accurately adjust the shape of the input light according to the distance.

Also, the control element SS may be disposed under the driving coil unit 150 , and at least a portion of the above-described coupling member EX may be located between the control element SS and the driving coil unit 150 . That is, at least a portion of the coupling member EX may overlap the control element SS and the driving coil unit 150 in the third direction. With this configuration, the coupling member EX may block the magnetic field generated from the driving coil unit 150 from acting as a noise with respect to the control element SS. Accordingly, the position detection of the optical unit by the control element SS may be accurately performed.

Furthermore, the third central axis Z3 of the control element SS is a direction perpendicular to the driving magnet unit 140 and the third direction or a plane XY when the first optical unit converts the light into a dot shape. can be nested.

In addition, the third central axis Z3 of the control element SS overlaps the driving magnet unit 140 in a direction perpendicular to the third direction or in a plane XY when the first optical unit converts the light into a planar shape. it may not be

Accordingly, the separation distance between the driving magnet unit 140 and the control element SS is reduced in the case of the point shape compared to the plane shape, so that the position detection of the first optical unit through the control element SS may be accurately performed. Accordingly, by precisely detecting the position of the first optical unit, control (eg, notification, etc.) for eye-safety by light in the case of a dot shape can be easily performed.

In addition, the housing 110 may include a step portion 110st located on the side. That is, the stepped portion 110st may be located or formed on the side of the housing side of the housing 110 . The step portion 110st may be located on a surface facing the second direction (Y-axis direction) and a side spaced apart from the light receiving portion. In other words, the outer surface of the housing 110 may have a groove due to the step portion 110st. In an embodiment, the step portion on the outer surface of the housing 110 may have a structure bent inward. Accordingly, in the step portion, the outer surface of the housing 110 may be located inside compared to the outer surface of the housing 110 in a region other than the step portion. With this configuration, the housing 110 can be seated on the first base and easily coupled to the first base as described later. In addition, the stepped portion of the housing 110 may be seated in a second groove to be described later. For example, the step portion of the housing 110 may be seated in the 2-2 groove (corresponding to G2b of FIG. 26 ). With this configuration, the stepped portion 110st or the 2-2 groove of the housing 110 may function as an alignment mark. Accordingly, left and right asymmetry between the housing 110 and the base may be improved.

20 is a view showing the first elastic member of the light emitting part according to the embodiment, and FIG. 21 is a view showing the coupling of the first elastic member of the light emitting part according to the embodiment. And FIG. 22 is a view showing the second elastic member of the light emitting part according to the embodiment, and FIG. 23 is a view showing the combination of the light emitting part and the second elastic member according to the embodiment.

20 to 23 , the elastic part 160 may include a first elastic member 161 and a second elastic member 162 . The elastic part 160 may be positioned above or below the first lens holder 130 to be coupled to the housing 110 and the first lens holder 130 . Accordingly, even when the first lens holder 130 is vertically moved by the driving unit, a preload may be applied to the vertical movement of the first lens holder 130 through the elastic part 160 coupled to the housing 110 . Accordingly, if no current is applied to the driving coil unit, the first lens holder 130 may exist at the same position in the housing 110 by the restoring force of the elastic unit 160 .

The first elastic member 161 may be positioned above the first lens holder 130 . The second elastic member 162 may be positioned under the first lens holder 130 .

The first elastic member 161 may include a first elastic coupling part P1 and a second elastic coupling part P2. The first elastic coupling part P1 may be located outside the second elastic coupling part P2. And the first elastic coupling portion (P1) may be coupled to the protrusion of the housing (110). Also, the second elastic coupling part P2 may be coupled to the first lens holder 130 . At this time, a coupling member may be applied to the first elastic coupling part P1 and the second elastic coupling part P2 for the above-described coupling (DA1). The bonding member may include epoxy or the like. Further, the coupling member may be, for example, a damper liquid. Furthermore, the first elastic coupling part P1 and the second elastic coupling part P2 may further include an additional groove extending to one side, so that application of the coupling member can be easily performed.

In addition, the first pattern portion PT1 having various curvatures may be positioned between the first elastic coupling portion P1 and the second elastic coupling portion P2 . That is, the first elastic coupling part P1 and the second elastic coupling part P2 may be coupled to each other with the first pattern part PT1 interposed therebetween.

Furthermore, the first elastic coupling part P1 and the second elastic coupling part P2 may have a hole or groove shape, and may have a shape to have an assembly tolerance with the housing or the first lens holder to be coupled.

In addition, the first pattern part PT1 may be symmetrically disposed with respect to the first diagonal line DL1 or the second diagonal line DL2 . The first diagonal line DL1 may be a first line VL1 connecting the dots between the first housing side and the fourth housing side and the dots between the second housing side and the third housing side. In addition, the second diagonal line DL2 may be a first line VL1 connecting the contact point between the housing side and the third housing side and the dots between the second housing side and the fourth housing side.

In addition, a damping member may be applied on the first pattern portion PT1 . Such a damping member may include a damper fluid. The vibration of the elastic part may be suppressed by the damper liquid. Such a damping member may be applied to the first pattern part PT1 . In addition, the damping member may be spaced apart from the housing. Accordingly, vibration generated in the first pattern portion PT1 may be reduced, and a malfunction due to coupling between the housing and the spring may be prevented. More specifically, the damping member may be applied to an area adjacent to the first elastic coupling part P1 or the second elastic coupling part P2 in the first pattern part PT1 (DP). Accordingly, since the first pattern portion PT1 is coupled to the first elastic coupling portion P1 and the second elastic coupling portion P2 having low vibration, vibration suppression may be improved.

In addition, the first elastic coupling portion P1 and the second elastic coupling portion P2 described above may be positioned on the first diagonal line DL1 or the second diagonal line DL2. By this configuration, even if the coupling member is applied to the first elastic coupling portion (P1) and the second elastic coupling portion (P2), the phenomenon that the coupling member is applied to the magnet or the first optical unit 120 can be prevented . Accordingly, the first elastic member 161 may be prevented from being coupled to a member other than the housing 110 or the first lens holder 130 so that a preload may be uniformly applied between the housing and the first lens member. Accordingly, the vertical movement of the first lens holder can be performed linearly, that is, accurately according to the control.

In addition, when the first lens holder 130 moves up and down, that is, in the third direction (Z-axis direction), tilt or movement based on the first direction (X-axis direction) or the second direction (Y-axis direction) Generation may be suppressed by the first elastic coupling portion P1 and the second elastic coupling portion P2 on the first diagonal line DL1/second diagonal line DL2.

The first pattern portion PT1 may be designed with an elastic modulus of the first elastic member 161 that linearly corresponds to an electromagnetic force and a vertical movement distance of the first lens holder. Furthermore, as will be described later, the first and second elastic members 161 and 162 are disposed on the upper and lower portions of the first lens holder to minimize the influence of momentum on the vertical movement of the first lens holder 130 .

In addition, the first elastic member 161 may have a shape such that the safety factor of the elastic member is greater than or equal to a threshold value so that shape deformation does not occur due to impact. That is, the safety factor of the first elastic member with respect to the first direction or the second direction may be greater than the safety factor of the first elastic member with respect to the third direction. Accordingly, durability against an impact applied in the first direction or the second direction may be increased.

Similarly, the second elastic member 162 may include a third elastic coupling portion (P3) and a fourth elastic coupling portion (P4). The third elastic coupling portion P3 may be located outside the fourth elastic coupling portion P4.

And the third elastic coupling portion (P3) may be coupled to the protrusion of the housing (110). Also, the fourth elastic coupling part P4 may be coupled to the first lens holder 130 . At this time, the coupling member may be applied to the third elastic coupling part P3 and the fourth elastic coupling part P4 to achieve the above-described coupling (DA2).

The bonding member may include epoxy or the like. Further, the coupling member may be, for example, a damper liquid. Furthermore, the third elastic coupling part P3 and the fourth elastic coupling part P4 may further include an additional groove extending to one side, so that application of the coupling member can be easily performed.

In addition, the second pattern portion PT2 having various curvatures may be positioned between the third elastic coupling portion P3 and the fourth elastic coupling portion P4 . That is, the third elastic coupling part P3 and the fourth elastic coupling part P4 may be coupled to each other with the second pattern part PT2 interposed therebetween.

Furthermore, the third elastic coupling part P3 and the fourth elastic coupling part P4 may be in the shape of a hole or a groove, and may have a shape to have an assembly tolerance with the housing or the first lens holder to be coupled.

In addition, the second pattern part PT2 may be symmetrically disposed with respect to the third diagonal line DL3 or the fourth diagonal line DL4 . The third diagonal line DL3 may be a first line VL1 connecting the dots between the first housing side and the fourth housing side and the dots between the second housing side and the third housing side. In addition, the fourth diagonal line DL4 may be a first line VL1 connecting the contact point between the housing side and the third housing side and the dots between the second housing side and the fourth housing side.

In addition, a damping member may be applied on the second pattern part PT2. Such a damping member may include a damper fluid. The vibration of the elastic part may be suppressed by the damper liquid. Such a damping member may be applied to the second pattern part PT2 .

In addition, the above-described third elastic coupling part P3 and the fourth elastic coupling part P4 may be positioned on the third diagonal line DL3 or the fourth diagonal line DL4. By this configuration, even if the coupling member is applied to the third elastic coupling portion (P3) and the fourth elastic coupling portion (P4), the phenomenon that the coupling member is applied on the magnet or the first optical unit 120 can be prevented . As a result, the second elastic member 162 is prevented from being coupled to a member other than the housing 110 or the first lens holder 130 so that a preload can be uniformly applied between the housing and the first lens member. Accordingly, the vertical movement of the first lens holder is linearly performed according to the control, so that accurate vertical movement control can be achieved.

In addition, when the first lens holder 130 moves up and down, that is, in the third direction (Z-axis direction), tilt or movement of the first lens holder 130 based on the first direction (X-axis direction) or the second direction (Y-axis direction) is Generation may be suppressed by the first elastic coupling portion P1 and the fourth elastic coupling portion P4 on the third diagonal line DL3 / fourth diagonal line DL4.

The second pattern part PT2 may be designed with an elastic modulus of the second elastic member 162 that linearly corresponds to an electromagnetic force and a vertical movement distance of the first lens holder. Furthermore, as will be described later, the first and second elastic members 161 and 162 are disposed on the upper and lower portions of the first lens holder to minimize the influence of momentum on the vertical movement of the first lens holder 130 .

In addition, the second elastic member 162 may have a shape such that the safety factor of the elastic member is greater than or equal to a critical value so that shape deformation does not occur due to impact. That is, the safety factor of the second elastic member with respect to the first direction or the second direction may be greater than the safety factor of the second elastic member with respect to the third direction. Accordingly, durability against an impact applied in the first direction or the second direction may be increased.

24 is a view showing a base of a camera module according to an embodiment, FIG. 25 is a view showing a second optical unit and a second lens barrel of a light receiving unit according to an embodiment, and FIG. 26 is a camera module according to the embodiment It is a diagram showing the cover of.

Referring to FIG. 24 , the base 200 is positioned on the main substrate 4 and may be in contact with the main substrate 4 . In addition, the first lens holder, the first optical unit, the second lens barrel, the second optical unit, and the housing described above may be seated on the base 200 .

The base 200 may include a first base 210 and a second base 220 that are spaced apart from each other. The first base 210 and the second base 220 may be spaced apart from each other in the first direction (X-axis direction). The first base 210 and the second base 220 may be integrally formed. Alternatively, the first base 210 and the second base 220 may have a separate structure. In the embodiment, it will be described below that the first base 210 and the second base 220 are integrally formed with each other, thereby improving the rigidity of the base 200 and improving the reliability of the camera device.

A housing (or a component of the light emitting unit such as the first optical unit and the first lens holder) may be seated on the first base 210 . That is, the first base 210 may accommodate the housing (or components of the light emitting unit such as the first optical unit and the first lens holder).

In addition, the second base 220 may be disposed adjacent to the first base 210 so that the second optical unit and the second lens barrel may be seated therein. An image sensor may be positioned under the second base 220 .

The first base 210 and the second base 220 may include base holes 210a and 220a, respectively. An optical signal from a light source may be output toward an object through the base holes 210a and 220a, and an optical signal (reflected light) reflected from the object may be provided to the image sensor. For example, an optical signal may be output toward an object through the first base hole 210a, and an optical signal reflected through the second base hole 220a may be provided to the image sensor.

In addition, the above-described filters may be seated on the first base 210 and the second base 220 , respectively. Furthermore, although the first base 210 and the second base 220 are shown as one body, they may be separated. In addition, the first base 210 and the second base 220 may have a separate structure.

In the camera device according to the embodiment, the light receiving unit 2 may have a structure separate from the light emitting unit 1 . Accordingly, in the camera device, the main substrate may also be separated into a first substrate and a second substrate, and the first base may be seated on the first substrate and the second base may be seated on the second substrate. In addition, the camera device may include a housing coupled to the base and a light emitting unit including an optical unit disposed in the housing. In this case, the camera device may include a first cover. As for the detailed configuration of each component, the same configuration described above or later may be applied. In addition, the first cover may correspond to a cover to be described later, and the cover may have a structure in which the first cover on the first base side and the second cover on the second base are separated. That is, the distance measuring camera device may include a light emitting unit including a first substrate, a first base disposed on the first substrate, a housing coupled to the first base, and an optical unit disposed in the housing.

Furthermore, in the distance measuring camera device, the light receiving unit may include a second substrate separated from the first substrate, an image sensor disposed on the second substrate, and a second base disposed on the second substrate and separated from the first base. have. Furthermore, the light receiving unit may further include a second cover.

In addition, the distance measuring camera device may include a single substrate or an integrated substrate without separating the first substrate and the second substrate. In addition, the separated first base and the second base may be seated on a single substrate. In addition, the camera device may have only the second cover without the first cover, or only the first cover without the second cover.

In this way, in the distance measuring camera device, the main substrate, the base, and the cover may be formed as a separate structure or as an integral structure. When separated, each of the main substrate, the base, and the cover may correspond to one component of the light emitting unit and the light receiving unit.

In addition, the second base 220 may be tilted as described above, and the filter attached to the second base 220 may also be tilted, so that the camera device according to the embodiment may perform the super resolution technique.

More specifically, the first base 210 according to the embodiment may include a body and a sidewall having a cavity therein.

The body may be located under the first base 210 . Accordingly, the body may be in contact with the main substrate. That is, the body may be supported by the main board. And the body may be used interchangeably with the 'bottom part', and the bottom surface of the first base 210 may be the bottom part or the upper surface of the body.

The sidewall may be disposed along an edge of the body at the top of the body. In other words, the sidewall may be disposed on the bottom or the bottom surface of the first base 210 .

In an embodiment, the sidewall may have a cavity inside, and the housing (or components of the light emitting unit such as the first optical unit and the first lens holder) may be seated in the cavity as described above.

Furthermore, the first bonding member, which will be described later, may be disposed between the bottom, which is the body, and the housing 110 . In addition, the first bonding member may be disposed between the bottom of the body and the lower surface of the housing 110 . Accordingly, the first bonding member may contact the body or the bottom portion and the lower surface of the housing, thereby coupling the base and the housing to each other.

In addition, the second bonding member may be disposed to be spaced apart from the first bonding member in the optical axis direction, and disposed between the sidewall and the housing in the first base. For example, the first bonding member may be located inside the second bonding member. Also, the second bonding member may be positioned above the first bonding member.

In addition, the second bonding member may be disposed between the step portion and the side wall of the housing. Accordingly, the second bonding member may contact the stepped portion of the housing and the sidewall of the base, and may couple the stepped portion and the sidewall to each other. In other words, the second bonding member may couple the housing and the base to each other, and may improve the coupling force between them.

Referring to FIG. 25 , the second optical unit 310 may be coupled to the second lens barrel 320 . The second optical unit 310 may be inserted into a hole located in the center of the second lens barrel 320 . In addition, the second lens barrel 320 may be screwed to the second base 220 of the base 200 by having a thread on the outer surface.

The second optical unit 310 may also include a plurality of lenses. The second optical unit 310 may have the same structure as the above-described first optical unit or optical unit.

Referring to FIG. 26 , the cover 400 may include a first cover part 410 and a second cover part 420 in addition to the above description. The first cover part 410 is positioned on the first base part and may include a first cover hole 410a overlapping the first optical part. An optical signal (output light) passing through the first optical unit through the first cover hole 410a may be irradiated to the object.

The second cover part 420 is positioned on the second base part and may include a second cover hole 420a overlapping the second optical part. An optical signal (reflected light) passing through the second optical unit through the second cover hole 420a may be irradiated to the image sensor.

27 is a view for explaining the movement of the first optical unit in the light emitting unit according to the embodiment, FIG. 28 is a view for explaining the optical signal shape according to the movement of the first optical unit, and FIG. 29 is a view for explaining the movement of the first optical unit It is a figure which shows an example of the image of a light receiving part.

27 to 29 , as described above, the optical signal (output light) may be converted into a planar light source or a point light source by moving the first optical unit in the vertical direction according to the embodiment. At this time, as the first lens holder moves in the optical axis direction or in the vertical direction, the first optical unit accommodated in the first lens holder may also move in the vertical direction. Hereinafter, it will be described based on the movement of the first optical unit.

The first optical unit may move from a first position (or a first height, H1) to a second position (or a second height, H2) along an optical axis (parallel to the Z-axis direction). In the camera device according to the embodiment, when the first optical unit is in a region between the first position (or the first height, H1) and the second position (or the second height, H2), the light source may emit light.

In this case, the first position or the first height H1 means a position or height when the first optical unit 120 is moved to the lowermost part by the driving unit. For example, the first height H1 is a height at which the first optical unit 120 is disposed at the lowest height.

The second position or second height H2 means a position or height when the first optical unit 120 is moved to the top by the driving unit. For example, the second height H2 is a height when the first optical unit 120 is disposed at the highest height.

Also, in the camera device according to the embodiment, the first optical unit 120 may move from an initial position to an area between the first height H1 and the second height H2 . And the initial position may be located between the first height H1 and the second height H2. In this case, the camera device can reduce energy consumption in moving from the initial position to the position or height for light emission. That is, energy efficiency can be improved.

Alternatively, the initial position of the camera device may be located below the first position (or the first height, H1). Accordingly, the camera device according to the embodiment may output the light from the light source LS in the form of a point light source or a dot pattern. Therefore, since the user performs distance measurement on a far-off object in most situations, the camera device can reduce energy efficiency and quickly perform distance measurement.

And, in the present specification, when the first optical unit is at a first height from the substrate, it corresponds to the above-described first position. And when the first optical portion is at the second height from the substrate, it corresponds to the second position described above. The second height may be greater than the first height.

The output light may be output in the form of a plane pattern or a plurality of dots according to a distance between the light source and the first lens module (or the first optical unit (hereinafter referred to as 'optical unit')). Therefore, the first optical unit 120 ) is located at the first height H1, the output light is irradiated as an object in the form of a point, and when the first optical unit 120 is located at the second height H2, the output light is irradiated as an object in the form of a plane. can be investigated with

In an embodiment, the first optical unit 120 may move in the optical axis direction (Z axis direction) by the driving unit. And as described above, the amount of movement to the upper portion of the first optical unit 120 may be adjusted according to the amount of current flowing through the driving coil unit.

For example, in the camera device according to the embodiment, the distance from the light source LS is the maximum (second height, see FIG. 27(a)) to the minimum (first height, FIG. 27(a)) b) can be moved to have

Specifically, the above-described distance between the light source and the optical unit (the first optical unit) may be a distance between the uppermost surface of the aperture of the light source and the lowermost surface of the optical unit. In addition, when the distance between the uppermost surface of the aperture of the light source and the lowermost surface of the optical unit is less than a predetermined distance, light is output in the form of dots. In addition, when the distance between the uppermost surface of the aperture and the lowermost surface of the optical unit in the light source is equal to or greater than a predetermined distance, the light source may be output in a planar form.

The control unit to be described later controls the amount of current provided to the driving coil unit to adjust the distance between the first lens module (or the first optical unit) and the light source to finally control the shape of the output light (planar light source or point light source). can For example, the controller may change the amount of movement of the first lens module by the actuator when the amount of current provided to the driving coil unit is changed (eg, increasing/decreasing the current value).

In an embodiment, when the distance between the light source and the first lens module (or the first optical unit) is equal to or greater than a certain distance, the optical signal (output light) is a surface light source as shown in FIGS. 28(a) and 29(a). Alternatively, it may be output in the form of a surface. That is, if the distance between the light source and the first lens module (or the first optical unit) is between a preset distance (or a predetermined distance) and the maximum distance, the optical signal (output light) may be output in the form of a surface light source or a surface. . Here, the maximum distance is the distance (second height) when the distance between the light source and the movable first lens module is maximum, and the distance between the height of the first lens module and the light source when the actuator is driven (eg, maximum current) can be

On the other hand, when the distance between the light source and the first lens module (or the first optical unit) is less than a certain distance, the optical signal may be output in the form of a point light source or a point as shown in FIGS. 28(b) and 29(b). have. That is, if the distance between the light source and the first lens module (or the first optical unit) is between a predetermined distance (or a predetermined distance) and the minimum distance, the optical signal may be output in the form of a point light source or a point. Here, the minimum distance is the distance (first height) when the distance between the light source and the movable first lens module (or the first optical unit) is the minimum, and the position of the first lens module when the actuator is not driven (initial position) and the distance between the light source.

In addition, in a range of a predetermined distance or less, the optical signal (output light) from the light source is output in the form of a dot as described above, and higher energy may be applied to the object.

The camera device according to the embodiment of the present invention can change the light pattern of the output light from a planar light source to a point light source or change the resolution of the point light source according to the resolution of the output light, the distance to the object, the degree of power consumption, etc. It provides the advantage of being flexible in responding to issues.

30 is a diagram illustrating a configuration and light reflection in a camera device according to an embodiment, FIG. 31 is a cross-sectional view of the camera device according to the embodiment, FIG. 32 is a cross-sectional view of a camera device according to an example, and FIG. 33 is It is a cross-sectional view of a camera device according to another embodiment, and FIG. 34 is a view showing a light source and output values in the camera device according to the embodiment.

30 and 31 , the camera device 10 according to the embodiment includes a substrate 4 , a light source LS, a first lens holder 130 , a first optical unit 120 , a driving unit, and a photodetector element. (PD) and a control unit (CP) may be included. The substrate 4 , the light source LS, the first lens holder 130 , the first optical unit 120 , the driving unit, the photodetecting device PD, and the control unit CP have the above contents except for the contents described below. The same can be applied.

In the camera device 10, the control unit CP may include a light control unit for controlling the current supplied to the light source, a movement control unit for controlling the current supplied to the driving unit, and a detection unit for detecting an abnormal state of the optical unit as described above. .

The light controller may adjust power (eg, current) applied to the light source to adjust light power output from the light source.

The movement control unit may adjust the current provided to the coil of the driving unit. By this control, the first optical unit 120 may move to a first height to a second height.

In addition, the light emitted by the light source LS from the camera device 10 is reflected by the first optical unit 120 , the first lens holder 130 , the filter F, etc. to be provided to the photodetector PD. can In addition, the photodetector PD may provide a detection value for the received light as an output value. For example, the photodetector PD may output a voltage or the like as an output value.

The detector may detect an abnormal state of the first optical unit by using the output value of the above-described photodetector. The abnormal state according to the embodiment may include an abnormal state such as damage (eg, crack) of the optical unit, separation, and overcurrent. Accordingly, the control unit may detect an abnormal state of the first optical unit in the detection unit and adjust the light output output from the light source through the light control unit.

In the camera device 10 according to the embodiment, the light source LS may be disposed on the substrate 4 as described above, and the light source LS and the first optical unit 120 may overlap each other along an optical axis. For example, the center of the light source LS and the center of the first optical unit 12 may be the same. In addition, the photodetector PD may be disposed to be spaced apart from the light source in a direction perpendicular to the optical axis.

In an embodiment, the light source LS, the photodetector PD, and the driver unit may be sequentially disposed in a direction perpendicular to the optical axis in the camera device. The driver unit may include a control unit CP.

For example, the entire light source LS may overlap the first optical unit 120 and the optical axis. In addition, the photodetector PD may also overlap the first optical unit 12 along an optical axis. With this configuration, the photodetector PD may more easily detect the light reflected from the first optical unit 120 or the like. For example, compared to a case in which the photodetector is disposed outside the first optical unit, an output value output from the photodetector may be improved. That is, the discrimination power of the photodetector for photodetection may be improved.

Also, the light source LS and the photodetector PD may overlap the filter F along the optical axis. Accordingly, the light source LS and the photodetector PD may be protected from external foreign substances by the filter F.

Additionally, referring to FIGS. 32 to 33 , in the camera device 10 according to an example, the light source LS may overlap the first optical unit 12 on an optical axis.

In addition, the photodetector PD may be spaced apart from the light source LS in a direction perpendicular to the optical axis. Also, the photodetector PD may at least partially overlap the first optical unit 120 along the optical axis. In addition, the photodetector PD may overlap the filter F along the optical axis. With this configuration, the sensitivity of the photodetector PD to the light reflected from the first optical unit 120 among the light emitted from the light source LS may be increased. That is, the photodetector PD may receive the light reflected from the first optical unit 120 at a high rate.

Referring to FIG. 33 , in the camera device according to another example, the light source LS overlaps the first optical unit 120 and the optical axis, and the photodetector PD is spaced apart from the light source LS in a direction perpendicular to the optical axis. can be placed.

Furthermore, the photodetector PD may partially overlap or not overlap the first optical unit 120 along the optical axis. For example, the photodetector PD may not be positioned in a region overlapping the first optical unit 120 with the optical axis. In addition, the light source LS overlaps the filter F along the optical axis, but the photodetector PD may partially overlap or not overlap the filter F along the optical axis.

With this configuration, most of the light reflected by the first optical unit 12 among the light emitted upward from the light source LS may be received by the photodetector PD. That is, light reflected only from the first optical unit 120 may be intensively provided to the photodetecting device PD. Accordingly, the accuracy of detecting the abnormal state of the first optical unit 120 may be improved.

Furthermore, in the camera device according to the embodiment, the light source LS, the photodetection device PD, and the first optical unit 120 may be disposed at a predetermined angle.

For example, in the camera device 10 , the first line VL1 and the second line VL2 may form a first angle θ. Here, the first line VL1 is a line connecting the optical axis OX and the photodetector PD at the intersection AP1 of the lowermost surface of the first optical unit 120 . The second line VL2 is a line connecting the photodetector PD at the intersection AP2 between the optical axis OX and the uppermost surface of the light source LS. In this case, the first angle may be 10 degrees to 80 degrees.

A portion where the first line VL1 and the photodetector PD are connected may be a central region of the photodetector PD. Also, a portion where the second line VL2 and the photodetector PD are connected may also be a central region of the photodetector PD. For example, it may be the center of the upper surface of the photodetecting device PD.

Also, the first angle θ may change according to the movement of the first optical unit 120 in the camera device. For example, the first angle θ may vary from the second angle to the third angle. Here, the second angle may represent a first angle when the first optical unit 120 is at a first height, and the third angle may represent a first angle when the first optical unit 120 is at a second height. have. In an embodiment, the second angle may be less than the third angle. That is, as the first optical unit 120 moves away from the substrate 4 , the first angle θ may decrease.

Referring to FIG. 34 , when the light output output from the light source LS is increased in the camera device according to the embodiment, light detection by the photodetector PD, that is, the output sensitivity is increased. Conversely, when the light output output from the light source in the camera device according to the embodiment increases, light detection by the photodetector, that is, the output value also increases.

35 is a view for explaining the movement of the first optical unit in the camera device according to the embodiment, and FIG. 36 is a view showing an output value for the movement of the camera device.

35 and 36 , in the camera device according to the embodiment, the photodetector PD may provide different output values according to the position of the first optical unit 120 . For example, the photodetector PD may output different output values as the first optical unit 120 moves from the first height to the second height.

For example, the output value of the photodetector PD may decrease as the first optical unit 120 moves upward along the optical axis. That is, the light received by the photodetector PD may decrease.

In an embodiment, the photodetector PD in the camera device may output a first output value with respect to the light received from the first optical unit 120 at a first height. Also, the photodetector PD may output a second output value with respect to the light received from the first optical unit 120 at the second height.

In addition, as the first optical unit 120 is adjacent to the light source LS, the light reflected from the first optical unit 120 may be provided to the photodetector PD, and the number of reflections and the amount of absorption may be reduced. Accordingly, the photodetector PD may provide a high output value. For example, the first output value may be greater than the second output value.

Here, the light source LS may output light with the same light output to the first optical unit at the first height and the second height. For example, since the power applied by the light control unit is the same, the light output of the light emitted from the light source LS may be provided the same regardless of the height of the first optical unit 120 . Accordingly, when the light output by the light source LS is the same, the output value of the photodetector may change in response to the movement of the first optical unit 120 . In particular, when the height of the first optical unit 120 from the substrate increases, the output value may decrease. In this case, the output value may increase linearly or non-linearly according to the height of the first optical unit 120 .

Furthermore, even when the same light output is achieved by the light source LS, the output value of the photodetector device may be small when outputting the surface light source in contrast to the case in which the dot pattern light is output.

Furthermore, in the camera device according to the embodiment, the controller may detect an abnormal state of the first optical unit 120 or the light source LS by using the output value of the photodetector PD as described above. In addition, the controller may control the first optical unit 120 or the light source LS based on the detected abnormal state of the first optical unit 120 .

In addition, the control unit may compare the first output value detected by the detection unit with the threshold range to detect any one of an abnormal state, in particular, an overcurrent, an abnormality (eg, damage) of the first optical unit, and deviation.

For example, when the first output value of the photodetector PD is greater than the critical range of the photodetector PD, or the second output value of the photodetector PD is smaller than the critical range of the photodetector PD, the controller In some cases, it can be detected as an abnormal state.

37 to 39 , a case in which the first output value is greater than the critical range of the photodetector PD, and a case in which the second output value is less than the critical range of the photodetector PD in FIGS. 40 to 41 will be described below. .

37 is a diagram illustrating an abnormal state of a first optical unit in a camera device according to an embodiment, FIG. 38 is a diagram illustrating an output value for movement of a camera device when an overcurrent occurs in a camera device according to an embodiment, and FIG. 39 is It is a diagram illustrating an output value for movement of the camera device when the first optical unit is damaged in the camera device according to the embodiment.

Referring to FIG. 37 , when there is an abnormality in the first optical unit or an abnormality in the light source LS (abnormal state), light provided to the photodetector PD may increase. For example, when the first optical unit 120 is cracked or an overcurrent is injected into the light source LS, the output value of the photodetector may increase. That is, as illustrated, when an overcurrent is injected into the first optical unit (normal lens (overcurrent)), the first output value (overcurrent) may be greater than the first output value (normal). Similarly, the second output value (overcurrent) may be greater than the second output value (normal).

In addition, the first output value (Crack) for the cracked lens may be greater than the first output value (normal) for the normal lens. Similarly, the second output value (Crack) for the cracked lens may be greater than the second output value (normal) for the normal lens.

For example, when the first output value is greater than the threshold range, the controller may detect the abnormal state as any one of an overcurrent and a crack of the first optical unit. That is, the controller may detect the abnormal state as any one of an overcurrent and a crack of the first optical unit by using the light received from the first optical unit 120 at the first height. Also, in response to this, the controller may provide eye-safety to a person or the like by adjusting the light output irradiated to the object.

38 to 39 , when the first output value of the photodetector is greater than the threshold range, the controller may detect the abnormal state as any one of an overcurrent and an abnormality of the first optical unit. In the following drawings, the first output value at the time of overcurrent is the 'first output value (overcurrent)', the second output value at the time of overcurrent is the 'second output value (overcurrent)', and the first output value for normal driving or the lens is the 'first output value' 1 output value (normal)', and the second output value for normal driving or the lens is shown as 'second output value (normal)'. In addition, a first output value for the crack lens is shown as a 'first output value (Crack)', and a second output value for the crack lens is shown as a 'second output value (Crack)'.

In addition, the controller may detect or determine whether an overcurrent or an abnormality (eg, a crack) of the first optical unit is an overcurrent using a slope between the first output value and the second output value output from the photodetector element.

As shown in FIG. 38 , an output value (a first output value (overcurrent) to a second output value (overcurrent)) from the photodetector device increases during overcurrent, and when the height of the first optical unit increases, the output value tends to decrease. Accordingly, in the camera device, when the slope between the first output value and the second output value is positive, the controller may detect an abnormal state. In particular, when a slope between the first output value and the second output value is within a predetermined value (eg, a threshold slope), the controller may detect the abnormal state as an overcurrent.

Furthermore, when the first optical unit is not at the first output value and the second output value, but at different positions among the first to second heights, the control unit compares the slope between the output values of the photodetecting element and another predetermined value corresponding to the slope with each other can be compared. Through this, the camera device may more easily and accurately detect the overcurrent as an abnormal state.

And when such overcurrent is detected, the controller may reduce or block the current applied to the light source to protect the eyes. And, in the present specification, as the output value of the photodetector device increases, the light irradiated to the object decreases, and as the output value of the photodetector device decreases, the light irradiated to the object increases.

As shown in FIG. 39 , when an abnormality (eg, a crack) occurs in the first optical unit in an abnormal state, output values (first output values Crack to second output values Crack) of the photodetector may increase. For example, when there is a crack in the lens (hereinafter, described as a 'crack lens'), when there is no abnormality (hereinafter, it will be described as a 'normal lens') because diffuse reflection increases due to the uneven shape caused by cracks. Contrast reflectivity may be increased. Conversely, the light transmittance may be higher in a normal lens than in a cracked lens.

Also, the output value of the photodetector may be changed according to whether the lens is abnormal. For example, the first output value for the cracked lens may be greater than the first output value for the normal lens. Accordingly, in the camera device according to the embodiment, when the first output value is greater than the threshold range, as described above, the controller may determine an abnormality or overcurrent of the first optical unit.

In addition, when an abnormality exists in the first optical unit, the output value of the photodetector may change in response to a change in the light output of the light source like a normal lens.

Alternatively, the slopes of the first output value and the second output value output from the photodetector may be different from the slopes of the normal lens and the cracked lens, respectively. In addition, in the case of a cracked lens and a normal lens, when the first optical unit moves upward (moves to the second position), the output value of the photodetector may be changed differently.

In an embodiment, when a slope between the first output value and the second output value deviates from a predetermined value, the controller may detect the abnormal state as an optical unit crack. And for the crack lens, the slope between the first output value and the second output value may change. For example, the sign of the slope between the first output value and the second output value may be positive. Alternatively, for a normal lens, the slope or change between the first output value and the second output value may be negative (decrease).

As described above, the controller may detect an abnormal state of the first optical unit by using a slope or change between the first output value and the second output value.

Alternatively, the slope or change between the first output value and the second output value for the cracked lens (hereinafter 'crack slope') may be greater than the slope or change between the first output value and the second output value for the normal lens (hereinafter the 'normal slope'). have. For example, the crack slope may not fall within a predetermined ratio of the normal slope.

Accordingly, the controller may adjust the power applied to the light source so that the first output value falls within the critical range. For example, the controller may reduce the power (eg, current) applied to the light source so that the first output value falls within the threshold range.

Furthermore, the control unit may adjust the current with respect to the movement of the first optical unit in response to the control of the first output value.

In addition, since the output value of the photodetector element increases with respect to the crack lens, the control unit adjusts the power applied to the light source so that the output value of the photodetector element for the first optical part between the first position and the second position falls within a critical range. can

Furthermore, the control unit can detect the abnormal state as either an overcurrent or a crack in the first optical unit using the light received from the first optical unit located between the first and second heights as well as the first output value. have.

In addition, the critical range may be changed in response to at least one of the position of the first optical unit and the light output of the light source. For example, the critical range is the maximum value of the output value of the photodetector at the first height of the first optical unit and the maximum light output of the light source. And, the threshold range is the minimum value of the output value of the photodetector at the second height of the first optical unit and the minimum light output of the light source.

Alternatively, the critical range may be set for each height of the first optical unit. Furthermore, the critical range may be set differently in response to the light output of the light source. With this configuration, even if the position of the first optical unit is changed, it is possible to detect an abnormal state of the first optical unit. Accordingly, eye-safety for a person or the like can be easily achieved by adjusting the light output irradiated to the object.

FIG. 40 is a diagram illustrating separation of the first optical unit from the camera device according to the embodiment, and FIG. 41 is a diagram illustrating output values for movement of the camera device when the first optical unit is separated from the camera device according to the embodiment.

40 to 41 , as described above in the camera device according to the embodiment, the abnormal state of the first optical part may include separation of the first optical part.

FIG. 41 shows output values of the photodetector device obtained through experiments (Experiment 1 to Experiment 4) for each of the case where the lens is detached and the first optical unit is normally positioned (normal lens 1 to normal lens 3).

For example, the detachment of the first optical unit may include the case where the first optical unit is detached from the lens holder, the lens is detached from the lens barrel, the lens barrel or the lens detaches, the case where the first optical unit detaches from the optical axis, etc. can

Since the amount of light reflection is reduced when the first optical unit is detached, an output value of the photodetector may also decrease.

Accordingly, when the second output value is less than the threshold range, the controller may detect the abnormal state as deviation of the first optical unit. For example, the controller may increase the output of the light source so that the second output value falls within a threshold range or output an alarm for deviation of the first optical unit.

Furthermore, the control unit may detect an abnormal state even when the output value of the photodetector detected while the first optical unit moves from the first height to the second height is out of the threshold range.

42 is a view showing a modified example of the camera device according to the embodiment, Figure 43 is a view showing a perspective view and a bottom view of the first optical unit,

42 to 43 , in the present embodiment, the first optical unit may include a first lens barrel and at least one lens accommodated in the first lens barrel as described above.

In addition, the camera device according to the present embodiment may further include a reflective member RM disposed on the lower surface of the lens 121 or the first lens barrel 122 .

For example, the reflective member RM may be disposed on a lower surface of a lens closest to the light source among the at least one lens 121 , or may be disposed on a lower surface of the first lens barrel 122 .

The reflective member RM may be formed of a material having high reflectivity with respect to light. For example, the reflective member RM may be made of metal.

In addition, the reflective member RM may be disposed along an edge of the lens 121 . For example, the reflective member RM may form a closed loop along the edge of the lens 121 . In this case, the reflective members RM may be continuously or discontinuously disposed. With this configuration, the reflective member RM is not positioned within the viewing range of the light emitted from the light source LS, thereby reducing light loss.

Alternatively, the reflective member RM is disposed under the first lens barrel 122 and positioned outside the viewing angle of the light source LS, regardless of the movement (first to second positions) of the first optical unit 120 . Light reflection can be performed.

Due to the reflective member RM, an output value of the photodetector PD may be increased. Accordingly, discrimination power may increase in detecting or discriminating an abnormal state of the first optical unit 120 .

44 is a diagram illustrating an optical device including a camera device according to an embodiment.

Referring to FIG. 44, the optical device according to the embodiment includes a front case (fc), a rear case (rc), and a camera device 10 provided in or between the front case (fc) and the rear case (rc). do.

And the camera device 10 may be the above-described camera device. Accordingly, the optical device may take a stereoscopic image through the camera device 10 that outputs such a three-dimensional depth image.

In the above, the embodiment has been mainly described, but this is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are not exemplified above in the range that does not depart from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (11)

Board;
a light emitting unit including a light source disposed on the substrate, a holder disposed on the substrate, an optical unit disposed on the light source, a driving unit configured to move the optical unit along an optical axis, and a photodetector disposed on the substrate ;
a light receiving unit including an image sensor disposed on the substrate; and
and a controller configured to control the optical unit or the light source using the output value received from the photodetector.
According to claim 1,
The light source overlaps the optical unit and the optical axis,
The photodetector element overlaps the optical unit with the optical axis.
According to claim 1,
the optic moves from a first height to a second height from the substrate along an optical axis;
the second height is raised when the optic is placed at the highest height;
The first height is a height at which the optical unit is disposed at the lowest height.
According to claim 1,
The first line and the second line form a first angle,
The first line is a line connecting the photodetector at the intersection of the optical axis and the lowermost surface of the optical unit,
The second line is a line connecting the photodetector at the intersection of the optical axis and the uppermost surface of the light source,
The first angle is 10 degrees to 80 degrees camera device.
5. The method of claim 4,
A portion where the first line and the photodetector are connected is a central region of the photodetector,
A portion where the second line and the photodetector are connected is a central region of the photodetector.
According to claim 1,
The controller is configured to detect an abnormal state when the first output value of the photo-detecting element is greater than a threshold range of the photo-detecting element or when the second output value of the photo-detecting element is less than the threshold range of the photo-detecting element.
According to claim 1,
The controller is configured to detect an abnormal state when a slope between the first output value of the photodetector element and the second output value of the photodetector element is positive.
According to claim 1,
The controller is configured to detect an abnormal state when a slope between the first output value of the photo-detecting element and the second output value of the photo-detecting element is within a predetermined value.
9. The method according to any one of claims 6 to 8,
The control unit reduces or blocks the current applied to the light source.
9. The method according to any one of claims 6 to 8,
The control unit adjusts the current applied to the light source when the first output value of the photodetector deviates from a critical range of the photodetector.
According to claim 1,
The optical unit includes a lens barrel and at least one lens accommodated in the lens barrel,
and a reflective member disposed on a lens closest to the light source among the at least one lens or on a lower surface of the lens barrel.

Images