JP2010085505A - Electronic equipment - Google Patents

Abstract

An electronic device capable of detecting the state of a lens of a camera module with a simple configuration.
An electronic apparatus includes an imaging unit having a plurality of imaging elements, a lens unit arranged in an imaging direction of the imaging unit, and a moving mechanism that moves the lens unit in the imaging direction. A holder that can hold the lens unit in a state in which the distance between the image pickup unit and the imaging unit is variable, a knob unit that is provided integrally with the holder and that drives the moving mechanism, and a knob unit that is provided integrally with the holder. In conjunction with the movement of the holder in accordance with the displacement of the image sensor, the interlocking unit that moves between the first position and the second position, and the light detection disposed at a position facing the interlocking unit at the first position of the imaging unit And a control unit that performs predetermined control on an image captured by the camera module based on a detection result of the light detection unit.
[Selection] Figure 2

Description

  The present invention relates to an electronic device such as a mobile phone.

  2. Description of the Related Art In recent years, mobile phones that are one type of electronic equipment have become increasingly popular as they are equipped with various functions as housings become smaller and thinner. For example, in a mobile phone with a camera, a model in which various functions such as an autofocus function and a macro photographing function are mounted on a camera is increasing.

By the way, such a camera-equipped mobile phone is realized by mounting a small camera module on the mobile phone. For example, when the camera module has a macro shooting function, it is necessary to change the focal length according to the distance between the subject and the camera module. That is, it is necessary to change the focal length by moving the lens. Therefore, a camera module having a macro photographing function requires a mechanism for moving a lens, and many of them are provided with a lever for moving the lens (for example, see Patent Document 1).
JP2004-064460

  Here, when the focal length is changed by moving the lens, it is necessary to transmit the change in the focal length to the control unit of the mobile phone on which the camera module is mounted. The transmission is often performed using a detection switch, and many of the detection switches are configured to be detected in conjunction with the movement of a lever that moves the lens. For this reason, the camera-equipped mobile phone needs to be arranged in the vicinity of a lever for moving a substrate or a lens for connecting the detection switch. As a result, there is a problem that the degree of freedom in designing the mobile phone is reduced and there is a mechanical restriction on the position where the detection switch is arranged. Further, the provision of the detection switch has a problem that the number of parts increases and the structure becomes complicated.

  Accordingly, an object of the present invention is to provide an electronic apparatus having a mechanism capable of detecting the state of a lens of a camera module with a simple configuration.

  An electronic apparatus according to an aspect of the invention includes an imaging unit having a plurality of imaging elements, a lens unit disposed in an imaging direction of the imaging unit, and a moving mechanism that moves the lens unit in the imaging direction. A holder capable of holding the lens unit in a state where the distance between the lens unit and the imaging unit is variable, a knob unit provided integrally with the holder unit for driving the moving mechanism, and the holder An interlocking portion that is provided integrally with the knob portion and moves between a first position and a second position in conjunction with the movement of the holder portion in accordance with the displacement of the knob portion, and the first position of the imaging portion. A camera module having a light detection unit disposed at a position facing the interlocking unit, and performing predetermined control on an image captured by the camera module based on a detection result of the light detection unit. A controller to perform That.

  Moreover, it is preferable that the said light detection part is a part of said imaging part.

  Moreover, it is preferable to further include a display unit that displays an image captured by the imaging unit, and the control unit causes the display unit to display the position of the lens unit on the display unit.

  Moreover, it is preferable that there are a plurality of at least one of the interlocking unit and the light detection unit.

  Further, it is preferable that the imaging unit includes an effective pixel region capable of outputting an electrical signal and an imaging reference region that defines a specific color reference, and the light detection unit is in the effective pixel region. .

  The imaging unit includes an effective pixel region capable of outputting an electrical signal, and an imaging reference region that defines a reference of an electrical signal output by the effective pixel region, and the light detection unit includes the imaging Preferably it is in the reference area.

  The camera module of the present invention includes an imaging unit having a plurality of imaging elements, a lens unit arranged in an imaging direction of the imaging unit, and a moving mechanism that moves the lens unit in the imaging direction, A holder capable of holding the lens unit in a state in which the distance between the lens unit and the imaging unit is variable by a moving mechanism; a knob unit provided integrally with the holder unit for driving the moving mechanism; An interlocking portion that is provided integrally with the holder portion and moves between a first position and a second position in conjunction with the movement of the holder portion according to the displacement of the knob portion; And a light detection unit disposed at a position facing the interlocking unit at one position.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which can detect the state of the lens of a camera module with simple structure can be provided.

The best mode for carrying out the present invention will be described below with reference to the drawings. The mobile phone 1 according to this embodiment includes a camera module 8 having a subject photographing function. The camera module 8 has two types of mode functions: a normal mode used for normal shooting and a macro mode used for close shooting. Here, the macro mode is a shooting mode for performing close-up shooting on a subject, and the normal mode is a shooting mode different from the macro mode. Although the camera module 8 is disposed in the front case 21 in FIG. 1, it may be disposed in the rear case 22, for example, or in the front case 30 or the rear case 30b of the display unit side body 3. May be.
First, the basic structure of a mobile phone 1 which is an embodiment of the electronic apparatus of the present invention will be described with reference to FIGS.

[First Embodiment]
FIG. 1 is a perspective view showing the cellular phone 1 according to the first embodiment of the present invention in an open state. FIG. 2 is a perspective view showing the cellular phone 1 shown in FIG. 1 in an open state. FIG. 3 is an exploded perspective view of members built in the operation unit side body 2 shown in FIG.

  As shown in FIGS. 1 and 2, the mobile phone 1 according to the first embodiment of the present invention includes an operation unit side body 2 and a display unit side body 3. The operation unit side body 2 and the display unit side body 3 are configured such that the upper end part of the operation unit side body 2 and the lower end part of the display unit side body 3 are connected to each other via a connecting part 4 having a hinge mechanism. It is connected so that opening and closing is possible centering on X. Accordingly, the mobile phone 1 can relatively move the operation unit side body 2 and the display unit side body 3 connected via the connection unit 4.

  That is, the mobile phone 1 includes a state in which the operation unit side body 2 and the display unit side body 3 are opened via the connecting unit 4 (open state; see FIG. 1), and the operation unit side body 2 and the display unit. The side housing 3 is configured to be able to be changed to a state in which the side housing 3 overlaps (folds) with each other via the connecting portion 4 (closed state, see FIG. 2). The closed state is a state in which the two casings 2 and 3 are arranged so as to overlap each other, and the open state is the two casings 2 and 3 not overlapping each other, or the both casings 2 and 3 are overlapping. It is the state arrange | positioned so that a grade may become small.

  The outer surface of the operation unit side body 2 includes a front case 21 and a rear case 22. The front case 21 is provided with an operation key group 11, a voice input unit 12 as a microphone to which a voice uttered by a user of the mobile phone 1 is input, and a camera unit 23 having a photographing function. ing.

  The operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, and an input operation key 14 for inputting a telephone number and characters such as mail. And a determination operation key 15 as an operation member for performing determinations in various operations, scrolling in the vertical and horizontal directions, and the like.

  Each key constituting the operation key group 11 has a predetermined function according to the open / closed state of the operation unit side body 2 and the display unit side body 3, various modes, or the type of the activated application. Assigned (key assignment). Then, when the user presses each key, an operation corresponding to the function assigned to each key is executed.

  The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side in the opened state of the mobile phone 1.

  The camera unit 23 is disposed on the outer end side on the connection unit 4 side in the longitudinal direction of the operation unit side body 2. A transparent member 24 is disposed in the camera unit 23 so as to close the camera unit 23 from the outer surface side of the front case 21. The transparent member 24 is for protecting the lens portion from water and dust. The transparent member 24 is made of, for example, a resin having transparency.

  On one side surface of the operation unit side body 2, an interface (not shown) for communicating with an external device (for example, a host device) and the photographing mode of the camera module 8 are switched to the normal mode or the macro mode. And a mode switching unit 25 where the lever 84 is exposed. On the other side surface of the operation unit side body 2, a side key (not shown) to which a predetermined function is assigned and an interface (not shown) for inserting and removing an external memory are arranged. ing. The interface is covered with a cap. Each interface is covered and sealed with a cap when not in use.

  The outer surface of the display unit side body 3 includes a front case 30a and a rear case 30b. The front case 30a is provided with a main display unit 34 for displaying various information and an audio output unit 31 as a receiver for outputting the voice of the other party of the call. A main liquid crystal module (not shown) is disposed on the main display unit 34. In the main liquid crystal module, the display unit provided on one surface of the main liquid crystal module is connected to the display unit side housing from the main display unit 34 formed on the front case 30a via a front panel (not shown) mainly including a transparent portion. It arrange | positions so that the front surface of the body 3 may be exposed.

  The audio output unit 31 is disposed on the end side opposite to the connecting unit 4 in the longitudinal direction of the display unit side body 3. That is, the audio output unit 31 is disposed in the vicinity of the end on the display unit side body 3 side in the open state of the mobile phone 1.

  On the other hand, the rear case 30b is provided with a sub-display unit 35 for displaying various information. A sub liquid crystal module (not shown) is disposed in the sub display unit 35. In the sub liquid crystal module, the display unit provided on one surface thereof is connected to the display unit side housing from the sub display unit 35 formed in the rear case 30b via a rear panel (not shown) mainly including a transparent portion. 3 is arranged so as to be exposed on the back surface.

Next, the internal structure of the operation unit side body 2 will be described with reference to FIG.
As shown in FIG. 3, the front case 21 and the rear case 22 are arranged so that their concave inner surfaces face each other, and are joined so that their outer peripheral edges overlap each other. In addition, the key structure 40, the key board 50, the shield case 60, and the main circuit board (circuit board) 70 are built in between the front case 21 and the rear case 22.

  The front case 21 has key holes 13a, 14a, 15a as opening portions, and a camera hole 23a on the inner surface facing the main display portion 34a of the display unit side body 3 in the closed state of the mobile phone 1. Is formed. From each of the key holes 13a, 14a, 15a, the pressing surface of the function setting operation key member 13b constituting the function setting operation key 13, the pressing surface of the input operation key member 14b constituting the input operation key 14, and the determination operation key 15 The pressing surface of the determination operation key member 15b that constitutes is exposed. By pressing down the pressing surfaces of the exposed function setting operation key member 13b, the input operation key member 14b, and the determination operation key member 15b, a metal dome described below (a bowl-like shape) provided in each corresponding key switch 51, 52, 53 is provided. The top of the shape is pressed, and comes into contact with the switch terminal to conduct electricity. The lens 80 of the camera module 8 is exposed through the transparent member 24 from the camera hole 23a.

  The key substrate 50 is a flexible substrate formed by interposing a wiring between a plurality of insulating layers (insulating films). The key board 50 includes a plurality of key switches 51, 52, and 53 corresponding to the function setting operation key 13, the input operation key 14, and the determination operation key 15 as a key top on the key structure unit 40 side. . The key switches 51, 52, and 53 (described later) have a metal dome that is a three-dimensionally formed metal plate that is curved like a bowl. When the apex of the bowl-like shape is pressed, the metal dome comes into contact with a switch terminal formed on an electric circuit (not shown) printed on the surface of the key substrate 50 so as to be electrically connected. It is configured.

The key structure section 40 is laminated on the key substrate 50, and a presser that can press the plurality of key switches 51, 52, and 53 and a key top that has an operation surface are made of elastic silicon or the like. It is provided and configured.
The key structure 40 is configured by attaching the key tops of the operation key group 11 to the surface of a base sheet made of silicon rubber with an adhesive. The function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the operation key group 11 in the key structure unit 40 are arranged at positions facing the key switches 51, 52, 53 on the key substrate 50, It arrange | positions so that it may expose from the key holes 13a, 14a, 15a formed in the front case 21. FIG.

  The shield case 60 is a conductive member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The shield case 60 includes a flat plate portion 61 that serves as a mounting surface for the key substrate 50, and ribs (not shown) that are formed substantially perpendicular to the opening-side surface of the flat plate portion 61. The rib is formed to be equal to or sufficiently higher than the height of the highest electronic component among the various electronic components mounted on the main circuit board 70. The ribs are formed on the periphery and inside of the flat plate portion 61 so as to correspond to the reference potential pattern layer 75 constituting the reference potential portion in the main circuit board 70. Specifically, the rib is formed so as to be disposed on the reference potential pattern layer 75 in a state where the shield case 60 is placed on the main circuit board 70.

  The shield case 60 can be made entirely of metal, or can be made of a skeleton formed of a resin and a conductor film formed on the surface of the skeleton. In addition, since the key substrate 50 is placed on the flat plate portion 61 in the shield case 60, pressure and deflection due to the key structure portion 40 being pressed are transmitted to the main circuit substrate 70 disposed below the shield case 60. It is hard to be done.

  The shield case 60 is electrically connected to the reference potential pattern layer 75 by contacting the bottom surface of the rib with the reference potential pattern layer 75. The shield case 60 is electrically connected to the reference potential pattern layer 75 to have the same potential as the reference potential pattern layer 75.

  The shield case 60 prevents external noise such as high frequency from acting on various electronic components disposed on the main circuit board 70, and is emitted from an RF (Radio Frequency) circuit, a CPU circuit, a power supply circuit, and the like. The noise is shielded, and it is prevented from acting on other electronic components or a receiving circuit connected to the antenna. Specifically, the bottom surface of the rib in the shield case 60 is disposed on the reference potential pattern layer 75, so that each circuit is surrounded by the rib and covered by a part of the flat plate portion 61. The rib functions as a partition wall in each circuit, and shields each circuit together with a part of the flat plate portion 61.

  In addition to the camera module 8 and various electronic components (not shown), a predetermined circuit and the like are disposed on the main circuit board 70. Various electronic components form a plurality of circuit blocks by a predetermined combination. For example, various circuit blocks including an RF (Radio Frequency) circuit, a power supply circuit, and the like are formed.

  On the first surface 70a on the shield case 60 side of the main circuit board 70, various electronic components including the camera module 8 described above and a reference potential pattern layer 75 constituting a reference potential portion are formed. The reference potential pattern layer 75 is formed so as to partition each circuit block. The reference potential pattern layer 75 is formed by printing a conductive member in a predetermined pattern on the surface of the first surface 70a of the main circuit board 70.

  A removable battery lid 26 is provided on the other end side of the rear case 22. The battery lid 26 is attached to the rear case 22 after storing the battery Q from the outside of the rear case 22.

  Next, the basic structure of the camera module 8 mounted on the mobile phone 1 of this embodiment will be described with reference to FIGS. 4 to 6B. 4 is an external perspective view of a camera module built in the mobile phone shown in FIG. FIG. 5 is a cross-sectional view schematically showing a cross section of the camera module shown in FIG. FIG. 6A is a front view schematically showing the light shielding part arranged at the first position, and FIG. 6B is a front view schematically showing the light shielding part arranged at the second position. is there.

  As shown in FIGS. 4 to 6B, the camera module 8 includes a lens 80 and a lens barrel 81 as a lens unit, a first holder 82, a second holder 83, and a knob provided on the second holder 83. A lever 84 as a part, a light shielding part 85 as an interlocking part provided in the second holder 83, an imaging part 86, and a camera substrate 87 are configured.

  The lens 80 is disposed so as to be exposed from the camera hole 23 a formed in the front case 21. The lens 80 is disposed between the camera hole 23a and the imaging unit 86, and is disposed on the front side of the imaging unit 86 so that the imaging direction of the imaging unit 86 matches the optical axis of the lens 80. Yes. In addition, although the normal lens 80 is arrange | positioned at the multiple lens-barrel 81, in the present embodiment, the number of the lenses 80 is one for simplification.

  The lens barrel 81 is formed in a substantially cylindrical shape. The lens barrel 81 holds the periphery of the lens 80 on the inner peripheral surface and fixes the lens 80. The lens barrel 81 is formed with a male screw portion 81a constituting a moving mechanism on the outer peripheral surface thereof. The external thread is cut in the external thread part 81a toward the above-mentioned imaging direction. Furthermore, a fitting portion 81 b that fits with the fitted portion 83 b of the second holder 83 is provided on the outer peripheral surface of the end portion on the imaging direction side of the lens barrel 81.

  The first holder 82 is provided with a holding portion 82b that holds the lens barrel 81 at a substantially central portion. The holding part 82b is formed as a cylindrical opening capable of holding the lens barrel 81. The holding portion 82 b is formed with a female screw portion 82 a that is screwed with a male screw portion 81 a formed on the lens barrel 81 and constitutes a moving mechanism. The moving mechanism includes a male screw portion 81a and the above-described female screw portion 82a.

  A female screw that can be screwed with a male screw of the lens barrel 81 is cut in the female screw portion 82a. The first holder 82 holds the lens barrel 81 in a movable state in the imaging direction by screwing the male screw portion 81a of the lens barrel 81 into the female screw portion 82a. The first holder 82 is fixed to the camera substrate 87 by a joining member such as solder. The first holder 82 is made of, for example, synthetic resin or metal.

  The second holder 83 is formed in a thin, substantially cylindrical shape, and a fitted portion 83b that can be fitted with a fitting portion 81b formed on the outer circumferential surface of the lens barrel 81 is formed on the inner circumferential surface of the opening. Is provided. The fitted portion 83b is formed in a substantially circular shape so as to be fitted to the fitting portion 81b. By fitting the fitting portion 81b of the lens barrel 81 into the fitting portion 83b, the second holder 83 joins the fitting portion 83b and the fitting portion 81b and interlocks with the movement of the lens barrel 81. It is configured as follows. In other words, by rotating the second holder 83, the lens barrel 81 held in a movable state by the first holder 82 is configured to move in the imaging direction. The second holder 83 is made of, for example, synthetic resin or metal.

  A light shielding portion 85 protruding in the center direction of the second holder 83 is formed in the fitted portion 83b. The light shielding unit 85 is formed so as to be able to shield light incident from the camera hole 23 a through the lens 80 toward a light detection unit 88 described later provided in the imaging unit 86. Specifically, the light shielding unit 85 is provided so as to face the light detection unit 88 provided in the imaging unit 86 at the first position (see FIG. 6A) arranged in the normal mode. That is, the light shielding unit 85 is disposed at the first position in the normal mode, and shields the light detection unit 88. Then, the light shielding unit 85 moves from the first position to the second position (see FIG. 6B) arranged in the macro mode in conjunction with the movement of the second holder 83, so that the light detection unit 88 is moved to the light detection unit 88. Cancels light blocking. That is, the light shielding unit 85 is moved to the second position in the macro mode, and makes the light detection unit 88 ready to receive light.

  The first position is a position where the light shielding unit 85 faces the light detection unit 88, that is, a position where the light shielding unit 85 can block light incident on the light detection unit 88 (FIG. 6A). The second position refers to a position different from the first position (see FIG. 6B).

  Further, the second holder 83 is formed with a lever 84 for switching between the “normal mode” and the “macro mode”. The lever 84 is formed to extend outward from the outer edge of the second holder 83 in a tongue shape. The lever 84 rotates the lever 84 in the rotation direction (the direction indicated by the arrow A in FIG. 4), thereby transmitting the turning force in the rotation direction of the lever 84 to the second holder 83. Is configured to rotate. In other words, the lever 84 is formed so as to be able to rotate the second holder 83 by rotating in the rotation direction and move the light shielding portion 85 provided on the second holder 83 from the first position to the second position. Has been.

  The imaging unit 86 is disposed behind the lens 80 in the imaging direction and is joined to the camera substrate 87 by a joining member such as solder. Further, the imaging unit 86 is disposed on the optical axis of the lens 80.

  The imaging unit 86 includes a plurality of imaging elements (not shown). The plurality of image sensors output an electrical signal corresponding to the light incident through the lens 80. The imaging unit 86 includes an optical black area 86a and an effective pixel area 86b in the total pixel area composed of a plurality of imaging elements.

  The optical black area 86a is an imaging reference area provided for estimating a noise current generated by ambient thermal energy among electric signals output from an effective pixel area 86c described later. The optical black region 86a is formed, for example, by providing a light shielding film on the image sensor.

  The effective pixel area 86b is an area that can be output as a video signal in the total pixel area. The effective pixel region 86b includes an effective pixel region 86c in which the characteristics of the product including the camera module 8 are guaranteed, and a non-effective pixel region 86d provided in the peripheral region of the effective pixel region 86c. The effective pixel region 86c is provided at a substantially central portion of the effective pixel region 86b. The non-effective pixel region 86d is provided at the boundary with the optical black region 86a in the effective pixel region 86b.

  As shown in FIGS. 6A and 6B, a light detection unit 88 is provided in the non-effective pixel region 86d. The light detection unit 88 is provided at a position facing the light shielding unit 85 disposed at the first position. When the light shielding unit 85 is in the first position (see FIG. 6A), the light detection unit 88 does not output a predetermined electrical signal because the light is shielded by the light shielding unit 85, but the light shielding unit 85 When moved to the second position (see FIG. 6B), a predetermined electrical signal corresponding to the light incident through the lens 80 is output to the control unit 100.

  A circuit related to control of the camera module 8 is mounted on the camera substrate 87. The camera board 87 is electrically connected to the main circuit board 70 via an FPC (not shown).

  Next, a functional configuration of the mobile phone 1 which is an embodiment of the electronic apparatus of the present invention will be described with reference to FIGS. FIG. 7 is a functional block diagram showing functions of the mobile phone. FIG. 8 is a functional block diagram showing functions of a camera module mounted on the mobile phone.

  As shown in FIG. 7, the mobile phone 1 includes a control unit 100, a communication unit 101, a memory 102, an operation unit 103, an audio processing unit 104, an image processing unit 105, a main display unit 34, a sub display unit, The display unit 35 and the camera module 8 are provided.

  The control unit 100 is composed of an IC, performs predetermined calculations based on various electrical signals input from the operation unit 103, the camera module 8, and the like, and controls the image processing unit 105 and the like. For example, the control unit 100 is provided with a determination unit 100a and a mode setting unit 100b. The determination unit 100 a determines mode setting according to the table 102 a stored in the memory 102 based on the electrical signal output from the light detection unit 88 provided in the camera module 8. Specifically, the mode setting of “normal mode” or “macro mode” is determined. The mode setting unit 100b sets the mode of “normal mode” or “macro mode” based on the determination result determined by the determination unit 100a.

  The communication unit 101 includes a main antenna 101a that performs communication with an external device (base station) using a predetermined use frequency band, and a communication processing unit 101b that performs signal processing such as modulation processing and demodulation processing. Yes. The main antenna 101a communicates with an external device (base station) in a predetermined use frequency band (for example, 800 MHz). The communication processing unit 101b demodulates the signal received by the main antenna 101a and supplies the processed signal to the control unit 100. In addition, the communication processing unit 101b modulates the signal supplied from the control unit 100 and transmits the signal to an external device (base station) via the main antenna 101a.

  The memory 102 stores many programs executed by the control unit 100, parameters, various tables, and the like. For example, the memory 102 stores a table for mode setting based on a pattern of presence / absence of light reception in the light detection unit 88 in addition to a large number of application programs controlled by the control unit 100.

  The voice processing unit 104 converts the voice data from the control unit 100 into an acoustic signal and outputs it to the voice output unit 31 for a call. In addition, the sound for a call input from the voice input unit 12 is converted into a predetermined voice signal and output to the control unit 100.

  The image processing unit 105 converts the image data from the control unit 100 into an image signal and outputs the image signal to the main display unit 34 or the sub display unit 35. For example, the image processing unit 105 converts the electrical signal (image data) output from the camera module 8 into an image signal of a predetermined format based on the mode (normal mode or macro mode) set by the mode setting unit 100b. To the main display unit 34 or the sub display unit 35. Further, for example, it is output to the main display unit 34 or the sub display unit 35 as a display indicating the state set to the normal mode or the macro mode.

  The camera module 8 includes a lens 80 and an imaging unit 86 including a plurality of imaging elements. The imaging unit 86 images light incident on the lens 80 from the camera hole 23a. The imaging unit 86 has an optical black area 86a and an effective pixel area 86b. The optical black area 86a is an imaging reference area that defines a reference for a specific color, and defines a black reference.

  The effective pixel region 86b images light incident on the lens 80 from the camera hole 23a and outputs it as an electrical signal. The effective pixel area 86b includes an effective pixel area 86c in which imaging characteristics are guaranteed, and a non-effective pixel area 86d provided in the peripheral area of the effective pixel area 86c. A light detection unit 88 is provided in the non-effective pixel region 86d. When the light detection unit 88 receives light incident on the lens 80 from the camera hole 23a, the light detection unit 88 outputs a predetermined electrical signal to the determination unit 100a.

  Next, the mode switching operation from the “normal mode” to the “macro mode” of the mobile phone 1 of the present embodiment will be described.

  Switching from the normal mode to the macro mode is performed by operating a lever 84 provided in the camera module 8. Specifically, first, the light shielding portion 85 is moved from the first position to the second position by rotating the lever 84 in a predetermined rotation direction. At this time, the lens 80 also moves in the imaging direction. Then, when the light shielding unit 85 moves from the first position to the second position, the light detection unit 88 receives light incident through the lens 80. When the light detection unit 88 receives light, the light detection unit 88 outputs an electrical signal to the control unit 100.

  In the cellular phone 1, the lens 80 is moved in conjunction with the operation of the lever 84 described above, and the control unit 100 determines the electric signal output from the light detection unit 88, and the control unit 100 controls the normal mode to the macro mode. By executing the change to the control, the mode switching from the “normal mode” to the “macro mode” is performed.

  Hereinafter, the movement operation of the lens 80 and the light shielding unit 85 based on the lever 84 operation will be specifically described.

  The mobile phone 1 according to the present embodiment is set to “normal mode” in the initial setting. Specifically, the light shielding unit 85 is disposed at the first position where the light detection unit 88 is shielded, and the control unit 100 performs control in the “normal mode”. The lens 80 is set to a focal length for the normal mode.

  First, when the user rotates the lever 84 in a predetermined rotation direction (the direction of arrow A in FIGS. 2 and 4), the rotational force in the rotation direction of the lever 84 is transmitted to the second holder 83. As a result, the second holder 83 starts rotating in conjunction with the rotation of the lever 84 in the rotation direction. Here, when the second holder 83 starts to rotate, the rotational force is transmitted to the lens barrel 81 because the fitting portion 81 b is fitted to the fitted portion 83 b of the second holder 83. Since the lens barrel 81 is held in a state of being screwed into the first holder 82 by a male screw portion 81 a provided in the lens barrel 81 and a female screw portion 82 a provided in the first holder 82, the second holder 83 In conjunction with the rotation of, movement in the imaging direction is started. Thereby, the lens 80 fixed to the lens barrel 81 moves to the focal length for the macro mode.

  At this time, the light shielding portion 85 provided in the second holder 83 also moves from the first position to the second position in conjunction with the movement of the second holder 83. Thereby, the light detection unit 88 can receive the light incident on the lens 80. When the light detection unit 88 receives light, the light detection unit 88 outputs an electrical signal to the control unit 100. Based on a predetermined electrical signal from the light detection unit 88, the control unit 100 switches from the “normal mode” control to the “macro mode” control by the determination unit 100a and the mode setting unit 100b.

  Next, the mode switching control in the control unit 100 will be specifically described.

  In principle, the control unit 100 determines whether the “normal mode” or the “macro mode” is selected depending on whether or not the light detection unit 88 receives light.

  First, the control unit 100 measures the brightness in the effective pixel region 86c by a microprocessor such as a DSP provided in the determination unit 100a. For example, the control unit 100 measures the luminance of the effective pixel region 86c. Thereby, the control unit 100 determines whether or not the user is in a dark place. Whether or not the user is in a dark place is determined based on a predetermined threshold value stored in the mode setting table stored in the memory 102. For example, the determination is made based on whether or not the luminance of the effective pixel region 86c is within a predetermined threshold range. The mode setting table stores, for example, a predetermined threshold when it is determined that the user is in a dark place, a predetermined threshold when the user is determined not to be in a dark place, and the like.

  When it is determined that the effective pixel area 86c has a predetermined brightness and the user is not in a dark place, the determination unit 100a determines whether there is a predetermined electrical signal output from the light detection unit 88. Determine. When the output of a predetermined electrical signal from the light detection unit 88 is detected and the determination unit 100a determines that the mode has been changed to the “macro mode”, the mode setting unit 100b changes the setting to the “macro mode”. Control for

  On the other hand, when it is determined that the user is in a dark place, the light shielding unit 85 moves from the first position to the second position, and the light detection unit 88 is in a state capable of receiving light (changed to “macro mode”). Even in the case where the light detection unit 88 receives light, the amount of light received by the light detection unit 88 is small, and a predetermined electrical signal output from the light detection unit 88 may be difficult to detect.

  Therefore, in this case, the control unit 100 determines whether there is an output of an electrical signal from the light detection unit 88 by the determination unit 100a and measures the luminance of the light detection unit 88. Then, the control unit 100 subtracts the luminance of the light detection unit 88 from the luminance of the effective pixel region 86c, and determines whether or not the subtracted value is within a predetermined threshold range. The determination is made based on a mode setting table stored in the memory 102, for example. The mode setting table stores, for example, a predetermined threshold when it is determined that the user is in a dark place, a predetermined threshold when the user is determined not to be in a dark place, and the like.

  When the value obtained by subtracting the luminance of the light detection unit 88 from the luminance of the effective pixel region 86 c is within a predetermined threshold range, the control unit 100 is in a state where the light detection unit 88 is shielded by the light shielding unit 85. Yes, it is determined that the lens position is in the position based on the “normal mode”, that is, the first position, and the control based on the “normal mode” is continued or executed.

  On the other hand, when the value obtained by subtracting the luminance of the light detection unit 88 from the luminance of the effective pixel region 86c is not within the predetermined threshold range, the control unit 100 moves the light shielding unit 85 from the first position to the second position. By moving, it is determined that the light detection unit 88 is not shielded by the light shielding unit 85 and the lens 80 has moved to the position based on the “macro mode”, and the control based on the “macro mode” is executed.

  According to the mobile phone 1 of the present embodiment having the above-described configuration, the following effects can be achieved.

  In the mobile phone 1 according to the present embodiment, the mobile phone 1 includes the light shielding unit 85 that can shield the light detection unit 88 provided in the imaging unit 86 in conjunction with the movement of the lens 80 in the camera module 8. I have. That is, the mobile phone 1 has a configuration capable of detecting the movement of the lens 80 based on whether or not the light detection unit 88 receives light. Therefore, for example, when performing macro photography, the lens 80 is moved to change the focal length of the lens 80 according to the distance between the subject and the camera module, and a macro detection switch provided separately is inserted to perform macro photography. Although it is necessary to shift to the macro mode, it is possible to detect the movement of the lens 80 based on the presence or absence of light reception by the light detection unit 88 and to determine whether to shift to the macro mode. This eliminates the need for a separate macro detection switch.

  Since it is not necessary to separately provide a macro detection switch, for example, even when a macro photographing function is installed, the mobile phone 1 can be manufactured without increasing the number of parts. That is, the mobile phone 1 can be manufactured at a low cost.

  In addition, by providing the light detection unit 88 in the image pickup unit 86 including a plurality of image pickup devices capable of outputting a predetermined electrical signal, it is not necessary to separately provide a light receiving unit. Therefore, it is possible to provide a light detection unit without increasing the number of parts. This makes it possible to manufacture a mobile phone equipped with a macro photographing function at low cost.

  In addition, for example, when a macro detection switch is separately provided to switch to the macro mode, many of them have a mechanism that is switched on in conjunction with the movement of a lever that moves the lens. In the embodiment, it is not necessary to provide a macro detection switch. Therefore, it is not necessary to provide the mechanism. This makes it possible to mount the macro photographing function on the mobile phone with a simple configuration.

  In addition, for example, when a macro detection switch is separately provided and a transition to the macro mode is performed, it is necessary to provide a macro detection switch near the lens, and a structure in which the macro detection switch is interlocked is complicated. Had. For this reason, the degree of freedom in design has been significantly hindered. However, in this embodiment, since it is not necessary to provide a macro detection switch separately, it is not necessary to provide a complicated mechanism, and the degree of design freedom is not reduced.

  Further, in the mobile phone 1 according to the present embodiment, the mobile phone 1 stores the mode setting data related to the “normal mode” or “macro mode” determined by the determination unit 100a and set by the mode setting unit 100b. It is configured so that it can be converted into a predetermined image signal and output to the main display unit 34 or the sub display unit 35 as a lens position. Therefore, the user can easily recognize the setting mode.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. About 2nd Embodiment, a different part from 1st Embodiment is mainly demonstrated, the same code | symbol is attached | subjected about the structure similar to 1st Embodiment, and description is abbreviate | omitted. In addition, the description of the first embodiment is appropriately applied to points that are not particularly described in the second embodiment. Also in the second embodiment, the same effects as in the first embodiment are achieved.

  FIG. 9A is a front view schematically showing the light shielding part arranged at the first position, and FIG. 9B is a front view schematically showing the light shielding part arranged at the third position. FIG. 9C is a front view schematically showing the light shielding portion arranged at the second position.

  As shown in FIG. 9A to FIG. 9C, the second embodiment is mainly different from the first embodiment in that “a plurality of light detection portions 88 are provided”. Specifically, in the mobile phone 1A according to the second embodiment, a position where the light shielding unit 85 is arranged is a position where the third position is provided between the first position and the second position, and faces the third position. Is different from the first embodiment in that the second light detection unit 88a is provided.

  As described above, the mobile phone 1A of the second embodiment is provided with the second light detection unit 88a at the third position, so that “second mode” and “macro mode” in the first embodiment are added. It is possible to provide a “macro mode”. In other words, the “macro mode” can be made multistage. Therefore, the cellular phone 1A according to the second embodiment can be provided with a more functional focal length operation with a simple configuration in addition to the effects achieved by the cellular phone according to the first embodiment.

  As mentioned above, although one Embodiment of this invention was described, this invention is not restrict | limited to embodiment mentioned above, It can change suitably.

  For example, in the present embodiment, the light detection unit 88 is provided in the ineffective pixel region 86d. However, the present invention is not limited to this. For example, the light detection unit 88 may be configured to be provided in the optical black region 86a that detects the black-level imaging reference signal.

  In the present embodiment, the light detection unit 88 is configured to use the imaging element of the imaging unit 86. However, the present invention is not limited to this. For example, the light receiving unit may be configured to include a light sensor for receiving light, or may be configured to use an IrDA light receiving unit used for infrared communication.

  In the present embodiment, the “normal mode” and the “macro mode” have been described. However, the present invention is not limited to this. For example, it may be used for mode change based on a telephoto function or an autofocus function. Further, as shown in FIG. 10, the light shielding unit may be disposed at a position between the lens 80 and the imaging unit 86. (Shading part 85a)

  In the present embodiment, the connecting unit 4 connects the operation unit side body 2 and the display unit side body 3 so as to be openable and closable around the opening / closing axis X, but is not limited thereto. A so-called biaxial hinge mechanism that connects the display unit side body 2 and the display unit side body 3 so as to be openable and closable around an opening / closing axis X, and is connected so as to be rotatable around a rotation axis orthogonal to the opening / closing axis X. May be provided.

  In addition, the electronic device of the present invention is not foldable as in the above-described embodiment, and one casing is slid in one direction from the state in which the operation section side casing 2 and the display section side casing 3 are overlapped. It may be a sliding electronic device. Alternatively, a rotary (revolver) electronic device in which one casing is rotated around an axis line along the overlapping direction of the operation unit side casing 2 and the display unit side casing 3 may be used.

  The present invention can be applied to portable electronic devices other than cellular phones, and can also be applied to electronic devices other than portable electronic devices. Examples of portable electronic devices other than mobile phones include PHS (registered trademark: Personal Handyphone System), portable game machines, portable navigation devices, PDAs (Personal Digital Assistants), notebook computers, EL displays or liquid crystal displays equipped with an operation unit. Is mentioned.

  Furthermore, examples of electronic devices other than portable electronic devices include, but are not limited to, an electronic dictionary, a calculator, an electronic notebook, a digital camera, a video camera, a radio, and the like.

It is a perspective view which shows the mobile telephone 1 of one Embodiment of this invention in an open state. It is a perspective view which shows the mobile telephone 1 shown in FIG. 1 in an open state. It is a disassembled perspective view of the member incorporated in the operation part side housing | casing 2 shown in FIG. FIG. 2 is an external perspective view of a camera module built in the mobile phone shown in FIG. 1. It is the cross-sectional schematic diagram which showed typically the cross section of the camera module shown in FIG. (A) is a front view which shows typically the light-shielding part arrange | positioned in the 1st position, (b) is a front view which shows typically the light-shielding part arrange | positioned in the 2nd position. It is a functional block diagram which shows the function of a mobile telephone. It is a functional block diagram which shows the function of the camera module mounted in a mobile telephone. (A) is a front view which shows typically the light-shielding part arrange | positioned in the 1st position, (b) is a front view which shows typically the light-shielding part arrange | positioned in the 2nd position, (c ) Is a front view schematically showing the light-shielding portion arranged at the third position. It is the cross-sectional schematic diagram which showed typically the cross section of the camera module shown in FIG.

Explanation of symbols

1 Mobile phone (electronic equipment)
2 Operation unit side body 3 Display unit side body 4 Connection unit 8 Camera module 80 Lens (lens unit)
81 Lens tube (lens)
82 First holder (holder)
83 Second holder (holder)
84 Lever (knob)
85 Shading part (interlocking part)
85a Shading part (interlocking part)
86 Imaging unit 86a Optical black region 86b Effective pixel region 86c Effective pixel region 86d Ineffective pixel region 87 Camera substrate 88 Photodetection unit 100 Control unit

Claims (7)

An imaging unit having a plurality of imaging elements;
A lens unit disposed in an imaging direction of the imaging unit;
A holder capable of moving the lens unit in the imaging direction, and a holder capable of holding the lens unit in a state in which a distance between the lens unit and the imaging unit is variable by the moving mechanism;
A knob portion provided integrally with the holder for driving the moving mechanism;
An interlocking portion that is provided integrally with the holder and moves between a first position and a second position in conjunction with the movement of the holder associated with the displacement of the knob portion;
A light detection unit disposed at a position facing the interlocking unit at the first position of the imaging unit;
A camera module having
A control unit that performs predetermined control on an image captured by the camera module based on a detection result of the light detection unit;
Electronic equipment comprising.   The electronic device according to claim 1, wherein the light detection unit is a part of the imaging unit. A display unit for displaying an image captured by the imaging unit;
The electronic device according to claim 1, wherein the control unit causes the display unit to display a position of the lens unit with respect to the imaging unit.   The electronic device according to claim 1, wherein at least one of the interlocking unit and the light detection unit is plural. The imaging unit has an effective pixel area capable of outputting an electrical signal, and an imaging reference area that defines a reference of a specific color,
The electronic device according to claim 1, wherein the light detection unit is in the effective pixel region. The imaging unit has an effective pixel area that can output an electrical signal, and an imaging reference area that defines a reference of an electrical signal output by the effective pixel area,
The electronic device according to claim 1, wherein the light detection unit is in the imaging reference region. An imaging unit having a plurality of imaging elements;
A lens unit disposed in an imaging direction of the imaging unit;
A holder capable of moving the lens unit in the imaging direction, and a holder capable of holding the lens unit in a state in which a distance between the lens unit and the imaging unit is variable by the moving mechanism;
A knob portion provided integrally with the holder for driving the moving mechanism;
An interlocking portion that is provided integrally with the holder and moves between a first position and a second position in conjunction with the movement of the holder associated with the displacement of the knob portion;
A light detection unit disposed at a position facing the interlocking unit at the first position of the imaging unit;
A camera module comprising:

Images