JP2016212229A - Illumination device, imaging device, imaging system, and control method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a situation where a user is irradiated with light from an illumination device.SOLUTION: An illumination device comprises: a body part that is removably attached to an imaging device; a movable part that can be rotated with respect to the body part; a light emitting part that is provided in the movable part; driving means that rotates the movable part; a first detection sensor that is arranged on a surface of the body part on the opposite side of a surface on a subject side while the body part is attached to the imaging device for detecting an object within a first detection range; and setting means that sets a limit angle limiting a rotation angle when the driving means rotates the movable part according to an output from the first detection sensor and information on an output from a second detection sensor for detecting an object within a second detection range, the output received from the imaging device including the second detection sensor.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a lighting device, an imaging device, an imaging system, and a control method thereof, and more particularly to control of a lighting device.

  2. Description of the Related Art Conventionally, flash photography (hereinafter referred to as bounce flash photography) is known in which light from a lighting device is irradiated toward a ceiling or the like and a subject is irradiated with diffuse reflected light from the ceiling or the like. According to the bounce flash photography, the subject can be irradiated with light from the illumination device indirectly instead of directly, so that it is possible to depict with soft light.

  Furthermore, a technique for automatically determining the optimum irradiation direction in bounce flash photography has been proposed. In Patent Document 1, in a strobe device capable of automatically changing the rotation angle of the light emitting unit, the light of the light emitting unit is directed to the reflector by setting the rotation angle to the user side instead of the angle at which the light emitting unit faces the subject side. Techniques for irradiation have been proposed.

JP 2011-170014 A

  However, the technique described in Patent Document 1 can irradiate the light of the light emitting unit on the reflector with the rotation angle of the light emitting unit facing the user, but the user is irradiated with the light of the light emitting unit. Is not taken into account.

  In view of the above, an object of the present invention is to enable a user to be prevented from being irradiated with light from a lighting device.

  In order to achieve the above object, an illumination device according to the present invention is provided in a main body portion that is detachably attached to an imaging device, a movable portion that is rotatable with respect to the main body portion, and the movable portion. A light emitting unit, driving means for rotating the movable unit, and a surface of the main unit that is opposite to the subject side in a state where the main unit is mounted on the imaging device; The second sensor received from an imaging device having a first detection sensor for detecting an object in the first detection range and a second detection sensor for detecting an object in the second detection range. Setting means for setting a limit angle for limiting a rotation angle when the movable unit is rotated by the driving unit in accordance with information relating to the output of the detection sensor and the output of the first detection sensor. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, it can reduce that the light from an illuminating device is irradiated to a user.

1 is a block diagram illustrating a schematic configuration of an imaging system according to an embodiment of the present invention. 1 is a block diagram illustrating a schematic configuration of an imaging system according to an embodiment of the present invention. 1 is a diagram showing a strobe device 300 according to an embodiment of the present invention. It is a figure which shows the flowchart of the various processes of the strobe device 300 which concerns on the auto bounce flash photography which concerns on embodiment of this invention. It is a figure which shows the flowchart of the various processes of the strobe device 300 which concerns on the auto bounce flash photography which concerns on embodiment of this invention. It is a figure which shows the flowchart of the various processes of the strobe device 300 which concerns on the auto bounce flash photography which concerns on embodiment of this invention. It is a figure which shows the relationship between the light and the to-be-photographed object which are emitted from the flash device when performing bounce flash photography. It is a figure which shows the positional relationship of the flash device 300 and a subject when performing bounce flash photography. 3 is a diagram showing a bounce drive range of the strobe device 300. FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show a schematic configuration of an imaging system according to an embodiment of the present invention. An imaging system according to an embodiment of the present invention includes a camera body 100 that is an imaging device, a lens unit 200 that is detachably attached to the camera body 100, and a flash device 300 that is an illumination device that is detachably attached to the camera body 100. including. Note that an imaging system using a lens built-in imaging device in which the lens unit 200 cannot be removed from the camera body 100 may be used. 1 and 2 are given the same reference numerals.

  First, the configuration inside the camera body 100 will be described. A microcomputer CCPU (hereinafter, camera microcomputer) 101 controls each part of the camera body 100. The camera microcomputer 101 has a one-chip IC circuit configuration with a built-in microcomputer including, for example, a CPU, ROM, RAM, input / output control circuit (I / O control circuit), multiplexer, timer circuit, EEPROM, A / D, D / A converter, etc. It has become. The camera microcomputer 101 can control the imaging system with software, and performs various condition determinations.

  The image sensor 102 is an image sensor such as a CCD or CMOS including an infrared cut filter, a low-pass filter, and the like, and a subject image is formed by the lens group 202 described later at the time of photographing. The shutter 103 moves to a position where the image sensor 102 is shielded from light and a position where the image sensor 102 is exposed.

  The main mirror (half mirror) 104 reflects a part of light incident from the lens group 202 and forms an image on the focusing plate 105, and an optical path (photographing optical path) of the light incident from the lens group 202 to the image sensor 102. ) Move to the retreat position from inside. A subject image is formed on the focus plate 105, and the formed subject image is confirmed by a photographer via an optical viewfinder (not shown).

  The photometry circuit (AE circuit) 106 includes a photometry sensor in the circuit, divides the subject into a plurality of areas, and performs photometry in each area. The photometric sensor in the photometric circuit 106 expects a subject image formed on the focus plate 105 via a pentaprism 114 described later. A focus detection circuit (AF circuit) 107 includes a distance measurement sensor having a plurality of distance measurement points in the circuit, and outputs focus information such as a defocus amount of each distance measurement point.

  The gain switching circuit 108 amplifies the signal output from the image sensor 102, and the gain switching is performed by the camera microcomputer 101 in accordance with shooting conditions, a photographer's operation, and the like.

  The A / D converter 109 converts the analog signal output from the amplified image sensor 102 into a digital signal. A timing generator (TG) 110 synchronizes the input of the amplified analog signal of the image sensor 102 and the conversion timing of the A / D converter 109.

  The signal processing circuit 111 performs signal processing on the image data converted into a digital signal by the A / D converter 109.

  The input unit 112 includes operation units such as a power switch, a release switch, a setting button, and the like, and the camera microcomputer 101 executes various processes in response to an input to the input unit 112. When the release switch is operated by one step (half-pressed), SW1 is turned on, and the camera microcomputer 101 starts photographing preparation operations such as focus adjustment and photometry. When the release switch is operated in two steps (fully pressed), SW2 is turned on, and the camera microcomputer 101 starts photographing operations such as exposure and development processing. In addition, by operating a setting button or the like of the input unit 112, various settings of the strobe device 300 attached to the camera body 100 can be performed. Further, when wireless communication is possible, various settings of a plurality of strobe devices can be performed even if the strobe device 300 is not directly attached to the camera body 100, as in the case where the strobe device 300 is attached.

  A display unit 113 having a liquid crystal device and a light emitting element displays various set modes, other shooting information, and the like.

  The pentaprism 114 guides the subject image on the focusing screen 105 to the photometric sensor and viewfinder 117 in the photometric circuit 106. The sub mirror 115 guides the light incident from the lens group 202 and transmitted through the main mirror 104 to the distance measuring sensor of the focus detection circuit 107. In this embodiment, the optical finder is used to guide the subject image to the finder 117 using the pentaprism 114, but an image picked up by the image sensor 102 or other image sensor is displayed instead of the optical finder. It may be an electronic viewfinder.

  The back surface detection unit 116 includes an infrared LED and a light receiving unit that are modularized and provided in the vicinity of the viewfinder 117. When an object or the like approaches, the infrared light is reflected by the object, and the object is determined by the amount of light received by the light receiving unit. Can be detected. In addition, if it is the structure which can detect the object within a predetermined detection range (within 2nd detection range), well-known structures other than infrared LED and a light-receiving part, for example, an illuminance sensor, an electrostatic sensor, etc., are used. The configuration used may be a back surface detection unit. A sensor for measuring the distance to the object is also included in the sensor for detecting an object within the predetermined detection range because it can be determined from the measured distance whether the object is within the predetermined detection range.

  Communication lines LC and SC are signal lines for an interface between the camera body 100, the lens unit 200, and the strobe device 300. For example, the camera microcomputer 101 is used as a host to exchange information such as data exchange and command transmission. As an example of LC and SC communication, an example of three-terminal serial communication is shown in terminals 120 and 130 in FIG. The terminal 120 includes an SCLK_L terminal for synchronizing communication between the camera body 100 and the lens unit 200, a MOSI_L terminal for transmitting data to the lens unit 200, and a MISO_L terminal for receiving data transmitted from the lens unit 200. Also included is a GND terminal that connects both the camera body 100 and the lens unit 200.

  Terminal 130 includes an SCLK_S terminal for synchronizing communication between camera body 100 and strobe device 300, a MOSI_S terminal for transmitting data to strobe device 300, and a MISO_S terminal for receiving data transmitted from strobe device 300. Also included is a GND terminal that connects both the camera body 100 and the strobe device 300.

  The posture detection circuit 140 is a circuit that detects a posture difference, 140a is a posture H detection unit that detects a posture difference in the horizontal direction, 140b is a posture V detection unit that detects a posture difference in the vertical direction, and 140c is a front-rear direction (Z direction). ) Is a posture Z detector for detecting a posture difference. For the posture detection circuit 140, for example, an angular velocity sensor or a gyro sensor is used. Attitude information regarding the attitude difference in each direction detected by the attitude detection circuit 140 is input to the camera microcomputer 101. Based on the detection result of the posture detection circuit 140, the camera microcomputer 101 can determine the posture of the camera body 100. In the present embodiment, the side of the camera body 100 on which the strobe device 300 can be mounted is the upper side, and the left and right sides viewed from the side on which the viewfinder 117 is provided are the left side and the right side, respectively. When the horizontal tilt of the camera body 100 with respect to the gravitational direction is 45 degrees or less, the camera body 100 is assumed to be in the horizontal position. On the other hand, when the tilt of the camera body 100 in the left-right direction with respect to the gravitational direction exceeds 45 degrees, the camera body 100 is assumed to be in the vertical position state. The vertical position state includes a left vertical position state in which the upper side of the camera body 100 is tilted to the left side and a right vertical position state in which the camera body 100 is tilted to the right side. Distinguish between vertical position and right vertical position. Further, the threshold value for distinguishing between the horizontal position state and the vertical position state is not limited to 45 degrees, and may be other angles.

  Next, the configuration and operation within the lens unit 200 will be described. A microcomputer LPU (hereinafter, lens microcomputer) 201 controls each part of the lens unit 200.

  The lens microcomputer 201 has a one-chip IC circuit configuration with a built-in microcomputer including, for example, a CPU, ROM, RAM, input / output control circuit (I / O control circuit), multiplexer, timer circuit, EEPROM, A / D, D / A converter, and the like. It has become.

  The lens group 202 includes a plurality of lenses including a focus lens and a zoom lens. The lens group 202 may not include a zoom lens. The lens driving unit 203 is a driving system that moves the lenses included in the lens group 202, and the driving amount of the lens group 202 is calculated by the camera microcomputer 101 based on the output of the focus detection circuit 107 in the camera body 100. Is done. The calculated drive amount is transmitted from the camera microcomputer 101 to the lens microcomputer 201. The encoder 204 is an encoder that detects the position of the lens group 202 and outputs drive information. Based on the driving information from the encoder 204, the lens driving unit 203 moves the lens group 202 by the driving amount to adjust the focus. A diaphragm 205 that adjusts the amount of light passing therethrough is controlled by the lens microcomputer 201 via a diaphragm control circuit 206.

  Next, the configuration of the strobe device 300 will be described. The strobe device 300 includes a main body portion 300a that is detachably attached to the camera main body 100, and a movable portion 300b that is held so as to be rotatable in the vertical and horizontal directions with respect to the main body portion 300a. In the present embodiment, the side of the main body 300a connected to the movable part 300b is the upper side, and the left and right viewed from the side where the input part 312 is provided are the left side and the right side, respectively. Explains.

  A microcomputer FPU (hereinafter, strobe microcomputer) 310 controls each part of the strobe device 300. The strobe microcomputer 310 has a one-chip IC circuit configuration with a built-in microcomputer including, for example, a CPU, ROM, RAM, input / output control circuit (I / O control circuit), multiplexer, timer circuit, EEPROM, A / D, D / A converter, and the like. It has become.

  The battery 301 functions as a power source (VBAT) for the strobe device 300. The booster circuit block 302 includes a booster 302a, resistors 302b and 302c used for voltage detection, and a main capacitor 302d. The booster circuit block 302 boosts the voltage of the battery 301 to several hundred volts by the booster 302a and charges the main capacitor 302d with electric energy for light emission.

  The charging voltage of the main capacitor 302d is divided by the resistors 302b and 302c, and the divided voltage is input to the A / D conversion terminal of the strobe microcomputer 310. The trigger circuit 303 applies a pulse voltage for exciting a discharge tube 305 described later to the discharge tube 305. The light emission control circuit 304 controls the start and stop of light emission of the discharge tube 305. The discharge tube 305 receives and excites a pulse voltage of several KV applied from the trigger circuit 303, and emits light using electric energy charged in the main capacitor 302d.

  The integrating circuit 309 integrates a light receiving current of a photodiode 314 described later, and its output is input to an inverting input terminal of a comparator 315 described later and an A / D converter terminal of the strobe microcomputer 310. A non-inverting input terminal of the comparator 315 is connected to a D / A converter terminal in the flash microcomputer 310, and an output of the comparator 315 is connected to an input terminal of an AND gate 311 described later. The other input of the AND gate 311 is connected to the light emission control terminal of the flash microcomputer 310, and the output of the AND gate 311 is input to the light emission control circuit 304. The photodiode 314 is a sensor that receives light emitted from the discharge tube 305, and receives light emitted from the discharge tube 305 directly or via a glass fiber or the like.

  The reflector 306 reflects the light emitted from the discharge tube 305 and guides it in a predetermined direction. The zoom optical system 307 including an optical panel and the like is held so that the relative position between the discharge tube 305 and the zoom optical system 307 can be changed, thereby changing the relative position between the discharge tube 305 and the zoom optical system 307. Number and irradiation range can be changed. The light emitting unit of the strobe device 300 mainly includes a discharge tube 305, a reflector 306, and a zoom optical system 307. The irradiation range of the light emitting unit is changed by the movement of the zoom optical system 307, and the irradiation of the light emitting unit is performed. The direction changes as the movable part 300b rotates. Note that an LED or the like may be used as the light source instead of the discharge tube 305.

  The distance acquisition unit 308 includes a light receiving sensor, receives light emitted from the discharge tube 305 and reflected by the subject, the ceiling, and the like by the light receiving sensor, and information on the distance from the subject, the ceiling, etc. based on the received light amount To obtain information on the distance to the subject, the ceiling, and the like. In the auto bounce mode to be described later, the distance acquisition unit 308 acquires first information related to the distance of the subject and also acquires second information related to the distance of the object in a direction different from the subject. A known method may be used as a method for calculating information related to the distance to the subject, the ceiling, and the like based on the received light quantity. Also, instead of receiving the reflected light of the light emitted from the discharge tube 305 and calculating the information about the distance, the reflected light of the light emitted from the dedicated light source is received by the dedicated light receiving sensor to calculate the information about the distance. The structure to do may be sufficient. In the present embodiment, a configuration in which the distance acquisition unit that acquires the first information and the distance acquisition unit that acquires the second information is the distance acquisition unit 308 will be described. The structure provided with this distance acquisition part may be sufficient.

  The input unit 312 includes operation units such as a power switch, a mode setting switch for setting an operation mode of the flash device 300, an auto bounce start button for executing an auto bounce operation, and other setting buttons for setting various parameters. In this embodiment, the strobe device 300 determines the irradiation direction of the light emitting unit (the irradiation direction of light from the discharge tube 305), and the bounce circuit 340 is used to move the movable unit 300b so that the determined irradiation direction is obtained. Rotating is called auto bounce.

  The stroboscopic microcomputer 310 executes various processes according to the input to the input unit 312.

  A display unit 313 including a liquid crystal device and a light emitting element displays each state of the strobe device 300.

  The zoom drive circuit 330 includes a zoom detection unit 330a that detects information related to the relative positions of the discharge tube 305 and the zoom optical system 307 using an encoder and the like, and a zoom drive unit 330b that includes a motor for moving the zoom optical system 307. .

  The driving amount of the zoom optical system 307 is calculated based on the focal length information by the flash microcomputer 310 that has acquired the focal length information output from the lens microcomputer 201 via the camera microcomputer 101.

  The back surface detection unit 316 has a configuration in which an infrared LED and a detection sensor are modularized. When an object or the like approaches, the infrared light is reflected by the object, and the object can be detected by the amount of light received by the detection sensor. It is like that. In addition, if it is the structure which can detect the object within a predetermined detection range (within 1st detection range), well-known structures other than infrared LED and a light-receiving part, for example, an illuminance sensor, an electrostatic sensor, etc., are used. The configuration used may be a back surface detection unit. A sensor for measuring the distance to the object is also included in the sensor for detecting an object within the predetermined detection range because it can be determined from the measured distance whether the object is within the predetermined detection range. When a sensor that measures the distance to an object is used, it may be determined based on the sensor measurement result (sensor output) whether or not the object is detected within a predetermined detection range. The arrangement of the back surface detection unit 316 by the flash microcomputer 310 will be described later with reference to FIG.

  The bounce circuit 340 includes bounce angle detection circuits 340a and 340c that detect a driving amount of the movable part 300b (a rotation angle of the movable part 300b with respect to the main body part 300a) and bounce drive circuits 340b and 340d that rotate the movable part 300b. Is done.

  The bounce angle detection circuit (bounce H detection circuit) 340a is a drive amount in the left-right direction of the movable portion 300b, and the bounce angle detection circuit (bounce V detection circuit) 340c is a drive amount in the vertical direction of the movable portion 300b. Detect with absolute encoder.

  A bounce drive circuit (bounce H drive circuit) 340b uses a known motor to drive the movable part 300b in the left-right direction, and a bounce drive circuit (bounce V drive circuit) 340d drives the movable part 300b in the vertical direction.

  The posture detection circuit 360 is a circuit that detects a posture difference, 360a is a posture H detection unit that detects a posture difference in the horizontal direction, 360b is a posture V detection unit that detects a posture difference in the vertical direction, and 360c is a front-rear direction (Z It is a posture Z detection unit that detects a difference in the direction). For the posture detection circuit 360, for example, an angular velocity sensor or a gyro sensor is used. Posture information regarding the posture difference in each direction detected by the posture detection circuit 360 is input to the flash microcomputer 310. Based on the detection result of the posture detection circuit 360, the flash microcomputer 310 can determine the posture of the main body 300a. In the present embodiment, the main body 300a is in the lateral position when the side of the main body 300a connected to the movable part 300b is the upper side and the inclination of the main body 300a with respect to the direction of gravity is 45 degrees or less. And On the other hand, when the horizontal inclination of the main body 300a with respect to the direction of gravity exceeds 45 degrees, the main body 300a is assumed to be in the vertical position. In the vertical position state, there are a left vertical position state in which the upper side of the main body part 300a is inclined to the left side and a right vertical position state in which the upper side of the main body part 300a is inclined to the right side. Distinguish between vertical position and right vertical position. Further, the threshold value for distinguishing between the horizontal position state and the vertical position state is not limited to 45 degrees, and may be other angles.

  Next, the layout of each part of the strobe device 300 will be described with reference to FIG. In FIG. 3, the same components as those described in FIGS. 1 and 2 are denoted by the same reference numerals.

  FIG. 3A is a diagram illustrating an appearance of the strobe device 300, and FIG. 3B is a diagram illustrating an appearance of the strobe device 300 with a part of the exterior thereof removed.

  In FIG. 3, a connection portion 317 is for attaching the main body portion 300 a to an accessory shoe provided on the upper surface of the camera main body 100, and is connected to the camera main body 100 and the strobe via a terminal 130 provided on the connection portion 317. The device 300 can communicate. As shown in FIG. 3A, the back surface detection unit 316 is arranged at the center in the left-right direction on the back surface of the main body unit 300 a and below the input unit 312. As described above, the back surface detection unit 316 is arranged at a position where the photographer looking through the finder 117 of the camera body 100 can be detected in a state where the strobe device 300 is attached to the camera body 100 via the connection unit 317. Has been. That is, the detection sensor of the back surface detection unit 316 is arranged on the surface of the main body 300a opposite to the subject side in a state where the main body 300a is attached to the camera main body 100.

  The arrangement of the back surface detection unit 316 is not limited to the position shown in FIG. 3, and the stroboscopic device 300 is mounted on the camera main body 100 via the connection unit 317 and the finder 117 of the camera main body 100 is looked into. Any position where the photographer can be detected is acceptable. The detection range of the back surface detection unit 316 is a range in which the distance in the predetermined direction from the position of the detection sensor of the back surface detection unit 316 is less than a predetermined value. However, if the detection range is too wide, the photographer's face is detected even when the photographer is away from the viewfinder 117. Therefore, for example, the detection range is preferably about 10 cm from the position of the detection sensor. Further, the detection range of the back surface detection unit 316 is such that it is easy to detect a photographer who is looking into the finder 117 of the camera body 100 when the strobe device 300 is attached to the camera body 100 via the connection unit 317. , May be inclined downward.

  Next, processing associated with light emission of the strobe device 300 related to auto bounce flash photography will be described with reference to FIGS. 4 to 8, the case where a ceiling is used as a reflection surface at the time of bounce flash photography will be described.

  When the power switch included in the input unit 312 is turned on and the strobe microcomputer 310 of the strobe device 300 becomes operable, the strobe microcomputer 310 starts the flowchart shown in FIG.

  In step S401, the flash microcomputer 310 initializes its own memory and port. In addition, the state of the switch included in the input unit 312 and preset input information are read, and various light emission modes such as how to determine the light emission amount and the light emission timing are set. In addition, an initial setting of a threshold value of a bounce driving range (a limit angle for limiting a rotation angle when the movable unit 300b is rotated by the bounce circuit 340) is performed, and the process proceeds to step S402. In the initial setting, it is assumed that the threshold is set to a first value described later, and details of the threshold will be described later.

  In step S402, the flash microcomputer 310 starts the operation of the booster circuit block 302 to charge the main capacitor 302d. After charging of the main capacitor 302d is started, the process proceeds to step S403.

  In step S <b> 403, the flash microcomputer 310 stores the focal length information of the lens unit 200 acquired from the camera microcomputer 101 via the communication line SC in the built-in memory of the flash microcomputer 310. If the focal length information was previously stored, it is updated to new focal length information. After the focal length information is stored, the process proceeds to step S404.

  In step S404, the flash microcomputer 310 instructs the zoom drive circuit 330 to move the zoom optical system 307 so that the irradiation range of the flash light becomes a range corresponding to the acquired focal length information. After the zoom optical system 307 is moved, the process proceeds to step S405. Note that the process may move to step S405 while the zoom optical system 307 is moving.

  In step S <b> 405, the flash microcomputer 310 causes the display unit 313 to display an image indicating information regarding the light emission mode set by the input unit 312, information regarding the acquired focal length information, and the like. Thereafter, the process proceeds to step S406.

  In step S406, the flash microcomputer 310 confirms whether or not the set flash mode is an auto bounce mode capable of executing auto bounce flash photography. If it is the auto bounce mode, the process proceeds to step S407, and if it is a normal light emission mode in which auto bounce flash photography cannot be performed, the process proceeds to step S432. The light emission mode can be set from the input unit 312 or the input unit 112 via the camera microcomputer 101 and the communication line SC.

  In step S407, the flash microcomputer 310 confirms whether or not the charging of the main capacitor 302d has been completed. If charging is complete, the process proceeds to step S408, and if charging is not complete, step S407 is repeated.

  In step S408, the flash microcomputer 310 confirms whether or not the auto bounce start button included in the input unit 312 has been turned ON. If the auto bounce start button is ON, the process proceeds to step S409, and if it is OFF, the process proceeds to step S436. Note that in the case where the instruction to cause the strobe device 300 to execute an auto bounce operation by operating the input unit 112 of the camera main body 100 can be transmitted from the camera main body 100 to the strobe device 300, there is an instruction from the camera main body 100. Also check whether or not.

  In step S409, the flash microcomputer 310 transmits information indicating that the auto bounce operation is being performed as the auto bounce operation information to the camera microcomputer 101 via the communication line SC.

  In step S410, the stroboscopic microcomputer 310 determines the rotation angle of the movable part 300b when the discharge tube 305 is caused to emit light in order to acquire information relating to the ceiling distance, and thus the main body part based on the detection result of the attitude detection circuit 360. The posture of 300a is determined. The detection result of the posture detection circuit 360 is stored in the built-in memory of the flash microcomputer 310, and it is determined whether it is in the horizontal position state or the vertical position state. If it is in the horizontal position, the process proceeds to step S411, and if it is in the vertical position, the process proceeds to step S412. Note that when the strobe device 300 is attached to the camera main body 100, the posture of the camera main body 100 and the posture of the main body portion 300a are in a corresponding relationship, and therefore the detection of the posture detection circuit 140, not the detection result of the posture detection circuit 360. Results may be used. Further, when the strobe device 300 is mounted on the camera body 100, the posture of the main body 300a can be determined if the posture of the camera body 100 can be detected. Therefore, the strobe device 300 may not be provided with the posture detection circuit.

  In step S411, the stroboscopic microcomputer 310 applies lateral position angle control as control for determining the rotation angle of the movable part 300b when the discharge tube 305 is caused to emit light in order to acquire information related to the ceiling distance. When the lateral position angle control is applied, information indicating that the lateral position angle control is applied is stored in the built-in memory of the stroboscopic microcomputer 310, and is movable using the bounce drive circuit 340d to obtain information on the ceiling distance. The part 300a is rotated upward. Note that the process to which the lateral position angle control is applied, such as the process of rotating the movable part 300a upward using the bounce drive circuit 340d, is performed after step S419 described later. After the lateral position angle control is applied, the process proceeds to step S413.

  In step S412, the stroboscopic microcomputer 310 applies vertical position angle control as control for determining the rotation angle of the movable portion 300b when the discharge tube 305 is caused to emit light in order to acquire information related to the ceiling distance. When the vertical position angle control is applied, information indicating that the vertical position angle control is applied is stored in the built-in memory of the flash microcomputer 310, and is movable using the bounce drive circuit 340b to obtain information on the ceiling distance. The part 300a is rotated leftward or rightward. Note that whether the movable unit 300a is rotated leftward or rightward using the bounce driving circuit 340b is determined according to the left vertical position state or the right vertical position state.

  Further, processing to which vertical position angle control is applied, such as processing of rotating the movable unit 300a in the left direction or the right direction using the bounce drive circuit 340d, is performed after step S419 described later. After applying the vertical position angle control, the process proceeds to step S413.

  In step S413, the flash microcomputer 310 uses the bounce circuit 340 to rotate the movable unit 300b so that the irradiation direction of the light emitting unit is the front direction. The front direction is a direction substantially parallel to the photographing optical axis of the camera body 100, and in this embodiment, the vertical rotation angle of the movable portion 300b is 0 degrees, and the horizontal rotation angle is 0 degrees. Sometimes, the irradiation direction of the light emitting unit is the front direction. It should be noted that this step can be omitted if it can be determined from the angle detection results of the bounce angle detection circuits 340a and 340c that it is already facing the front direction. Thereafter, the process proceeds to step S414.

  In step S414, the stroboscopic microcomputer 310 determines whether or not the irradiation direction of the light emitting unit is in the front direction based on the angle detection results of the bounce angle detection circuits 340a and 340c. The current angle detection results of the bounce angle detection circuits 340a and 340c are stored in the built-in memory of the flash microcomputer 310. If the irradiation direction of the light emitting unit is in the front direction, the process proceeds to step S415. If not, the process proceeds to step S416. Transition.

  In step S415, the flash microcomputer 310 causes the discharge tube 305 to emit light in order to acquire information related to the subject distance. After the light emission, the flash microcomputer 310 instructs the distance acquisition unit 308 to calculate information on the subject distance based on the result of receiving the reflected light from the subject by the light receiving sensor. The calculation result of the information related to the subject distance is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S419.

  In step S416, the flash microcomputer 310 confirms whether or not an instruction to end the auto bounce operation transmitted from the camera microcomputer 101 has been acquired via the communication line SC. When the stroboscopic microcomputer 310 obtains an instruction to end the auto bounce operation, the auto bounce operation is ended and the process returns to step S402. If not acquired, the process proceeds to step S417.

  In step S417, the stroboscopic microcomputer 310 confirms whether or not a predetermined time has elapsed since the movable unit 300b started to rotate so that the irradiation direction of the light emitting unit becomes the front direction. If the predetermined time has elapsed, the process proceeds to step S418. If the predetermined time has not elapsed, the process proceeds to step S414.

  In step S418, the flash microcomputer 310 transmits information indicating that the auto bounce operation is in an error state to the camera microcomputer 101 via the communication line SC as the auto bounce operation information, and returns to step S402.

  In step S419, the stroboscopic microcomputer 310 uses the bounce circuit 340 to rotate the movable unit 300b so that the irradiation direction of the light emitting unit is the front direction. Thereafter, the process proceeds to step S420.

  In step S420, the stroboscopic microcomputer 310 determines whether or not the irradiation direction of the light emitting unit is directed toward the ceiling based on the angle detection results of the bounce angle detection circuits 340a and 340c. The current angle detection results of the bounce angle detection circuits 340a and 340c are stored in the built-in memory of the flash microcomputer 310, and if facing the ceiling, the process proceeds to step S421, and if not, the process proceeds to step S422.

  In step S421, the flash microcomputer 310 causes the discharge tube 305 to emit light in order to acquire information related to the ceiling distance. After the light emission, the flash microcomputer 310 instructs the distance acquisition unit 308 to calculate information related to the ceiling distance based on the result of receiving the reflected light from the ceiling by the light receiving sensor. The calculation result of the information related to the ceiling distance is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S425.

  In step S422, the stroboscopic microcomputer 310 confirms whether or not the auto bounce operation end instruction transmitted from the camera microcomputer 101 has been acquired via the communication line SC. When the stroboscopic microcomputer 310 obtains an instruction to end the auto bounce operation, the auto bounce operation is ended and the process returns to step S402. When not acquiring, it transfers to step S423.

  In step S423, the stroboscopic microcomputer 310 confirms whether or not a predetermined time has elapsed since the movable unit 300b started to rotate so that the irradiation direction of the light emitting unit becomes the ceiling direction. If the predetermined time has elapsed, the process proceeds to step S424, and if the predetermined time has not elapsed, the process proceeds to step S420.

  In step S424, the flash microcomputer 310 transmits information indicating that the auto bounce operation is in an error state to the camera microcomputer 101 via the communication line SC as the auto bounce operation information, and returns to step S402.

  In step S425, the flash microcomputer 310 determines the irradiation direction of the light emitting unit suitable for bounce flash photography based on the attitude detection result in step S410 and the acquisition results in steps S415 and S421. For example, the rotation angle of the movable unit 300b is calculated based on the posture detection result in step S410 and the acquisition results in steps S415 and S421, and the irradiation direction of the light emitting unit suitable for bounce flash photography is determined.

  Here, a method of determining the irradiation direction of the light emitting unit suitable for bounce flash photography will be described with reference to FIGS. FIG. 7 is a diagram showing the relationship between the light emitted from the flash device 300 and the subject when performing bounce flash photography. FIG. 7A is a diagram illustrating a case where the rotation angle of the movable unit 300b is 45 degrees upward and 0 degree in the left-right direction. FIG. 7B illustrates the rotation angle of the movable unit 300b. It is a figure which shows the case where it is 90 degree | times to an upper direction and 0 degree | times to the left-right direction.

  As shown in FIGS. 7A and 7B, when the rotation angle of the movable portion 300b is smaller, the diffuse reflected light from the ceiling is irradiated to the subject like a top light, and the shadow of the subject's jaw or the like is lost. It becomes large and dark. Conversely, the larger the rotation angle of the movable part 300b, the farther the reflection surface of the ceiling viewed from the subject, the diffuse reflection light from the ceiling enters the subject at a shallow angle, and the shadow generated on the subject becomes small and thin. However, if the angle of incidence on the subject becomes too shallow, the shadow produced by the subject becomes too thin and unnatural.

  As described above, the shadow generated on the subject during the bounce flash photography is affected by the angle at which the diffusely reflected light from the ceiling enters the subject.

  Next, an example of a method for calculating the rotation angle of the movable portion 300b so that an appropriate shadow is generated on the subject during bounce flash photography will be described with reference to FIG. In FIG. 8, it is assumed that the distance in the left-right direction in the drawing is a distance perpendicular to the direction of gravity, and the strobe device 300 is not tilted in the front-rear direction.

  FIG. 8 is a diagram showing the positional relationship between the flash device 300 and the subject when performing bounce flash photography. In FIG. 8, the distance from the light emission reference plane of the strobe device 300 to the subject (subject distance) is x, and the distance from the light emission reference plane to the ceiling (ceiling distance) is y. Furthermore, the distance from the intersection of the straight line connecting the subject and the light emission reference plane and the vertical line from the ceiling reflecting portion to the subject is x1, and the distance from the intersection to the light emission reference plane is x2. In the present embodiment, the light emission reference surface represents a surface on which light emitted from the discharge tube 305 is emitted to the outside of the strobe device 300. For example, the light emission of an optical panel disposed in front of the discharge tube 305 Corresponds to the surface. In the present embodiment, the ceiling reflecting portion represents the intersection of the central axis of the light beam emitted from the discharge tube 305 and emitted to the outside of the strobe device 300 and the ceiling.

  Further, the angle formed by the central axis of the diffuse reflected light from the ceiling reflecting portion incident on the subject and the straight line connecting the subject and the light emission reference plane is θ1, and the central axis of the light beam emitted outside the strobe device 300 emits light from the subject. The angle formed by the straight line connecting the reference plane is defined as θ2.

Here, assuming that the distance from the intersection of the straight line connecting the subject and the light emission reference plane and the vertical line from the ceiling reflection portion to the light emission reference plane is x2, x2 is obtained by Expression (1).
x ₂ = x− (y / tan θ ₁ ) (1)

Moreover, (theta) 2 is calculated | required by the following formula | equation (2).
θ ₂ = tan ⁻¹ {ytan θ ₁ / (xtan θ ₁ −y)} (2)

  When the angle θ1 is set to an appropriate angle θ1 ′ determined in advance by experiment or the like according to the equation (2), the rotation angle θ2 ′ of the movable part 300b suitable for bounce flash photography is based on the subject distance x and the ceiling distance y. Can be calculated. For example, when the appropriate angle θ1 ′ is 30 degrees, the subject distance x is 3 m, and the ceiling distance y is 1.4 m, the rotation angle θ2 ′ is about 68 degrees from Expression (2). 8B, when the subject and the strobe device 300 are relatively close, for example, when the proper angle θ1 ′ is 30 degrees, the subject distance x is 2 m, and the ceiling distance y is 1.4 m, The moving angle θ2 ′ is about 107 degrees from the equation (2).

  The method for determining the irradiation direction of the light emitting unit suitable for bounce flash photography is not limited to the above method, and may be determined by other known methods. Further, the appropriate angle θ1 ′ may be an angle other than 30 degrees.

  The flash microcomputer 310 determines the irradiation direction of the light emitting unit suitable for bounce flash photography, stores the determined result in the built-in memory of the flash microcomputer 310, and proceeds to step S426.

  In step S426, the stroboscopic microcomputer 310 confirms whether or not an object is detected by the back surface detection unit 316. When the object is detected by the back surface detection unit 316, information indicating that the object is detected by the back surface detection unit 316 is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S427. On the other hand, if no object is detected by the back surface detection unit 316, information indicating that the object is not detected by the back surface detection unit 316 is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S428b.

  In step S427, the stroboscopic microcomputer 310 confirms whether or not an object is detected by the back surface detection unit 116. For this confirmation, information of the back surface detection unit 116 acquired from the camera microcomputer 101 via the communication line SC is used. If an object is detected by the back surface detection unit 116, information indicating that the object is detected by the back surface detection unit 116 is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S428a. On the other hand, when the object is not detected by the back surface detection unit 116, information indicating that the object is not detected by the back surface detection unit 116 is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S428b.

  Note that the detection processing by the back surface detection unit 116 and the back surface detection unit 316 may be executed so as to always monitor whether or not an object exists in the detection range, or may be executed periodically. Further, the output of the back surface detection unit 316 used in step S426 and the output of the back surface detection unit 116 used in step S427 are less different from the actual situation in the latest output. Therefore, the output of the back surface detection unit 316 used in step S426 and the output of the back surface detection unit 116 used in step S427 include an output immediately before the auto bounce start button is turned on or an output after the auto bounce start button is turned on. preferable.

  In step S428a, the stroboscopic microcomputer 310 resets the bounce drive range threshold to the first value. If it is already set to the first value, this step may be omitted. After resetting the threshold value, the set threshold value is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S429.

  In step S428b, the flash microcomputer 310 resets the bounce drive range threshold to a second value smaller than the first value. If the second value has already been set, this step may be omitted. After resetting the threshold value, the set threshold value is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S429.

  In step S429, the stroboscopic microcomputer 310 rotates the movable part 300b based on the calculation result of step S425, the detection results of the bounce angle detection circuits 340a and 340c, and the threshold values set in steps S428a and S428b. Calculate the drive amount.

  The relationship between the outputs of the back surface detection unit 116 and the back surface detection unit 316 and the threshold value of the bounce drive range will be described with reference to FIG. As shown in FIG. 9A, in the strobe device 300 according to the present embodiment, the movable unit 300b is moved upward by 120 degrees at the maximum from the position where the irradiation direction of the light emitting unit is the front direction in the initial setting. 7 degrees and 120 degrees in the left-right direction. That is, assume that the first value is 120 degrees.

  When the threshold of the bounce drive range is 120 degrees, the degree of freedom to change the irradiation direction of the light emitting unit is large, and when the movable unit 300b is rotated to the maximum, the light from the light emitting unit is irradiated behind the main body 300b. Can do.

  When the light from the light emitting unit is irradiated behind the main body unit 300b, the light from the light emitting unit may be applied to the photographer's face depending on the position of the photographer's face. For example, as shown in FIG. 9B, when the photographer is away from the camera body 100, when the light from the light emitting unit is irradiated behind the body unit 300b, the light emitting unit is applied to the photographer's face. May be irradiated. On the other hand, when the photographer is in a state of approaching the camera body 100 in order to look into the viewfinder 117 of the camera body 100, even if the light from the light emitting part is irradiated behind the body part 300b, Light from the light emitting unit is not irradiated.

  From the above, in the present embodiment, the photographer's face approaches the camera body 100 so that the light from the light emitting unit is not irradiated to the photographer's face even if the light from the light emitting unit is irradiated behind the main body unit 300b. If so, increase the threshold of the bounce drive range. On the other hand, when the photographer's face is separated from the camera body 100 and the light from the light emitting unit is irradiated behind the main body unit 300b, the photographer's face may be irradiated with the light from the light emitting unit. Reduce the driving range threshold.

  In the present embodiment, the threshold value of the bounce drive range is set based on the output from the back surface detection unit 116 and the output from the back surface detection unit 316. By using the output of the back surface detection unit 116 and the output of the back surface detection unit 316, it is possible to accurately determine whether or not the photographer's face is approaching the camera body 100, and the light from the illumination device is transmitted to the user. Irradiation can be reduced.

  When an object is detected by the back surface detection unit 116, there is a high possibility that the photographer's face is approaching the camera body 100. On the other hand, when the object is detected by the back surface detection unit 316, it can be considered that the photographer's face is approaching the camera body 100 and the photographer is operating the input unit 312.

  Therefore, in the present embodiment, when an object is detected by the back surface detection unit 116 and the back surface detection unit 316, it is assumed that the photographer's face is approaching the camera body 100, and the threshold value of the bounce drive range is set to the first value. Set to threshold. If no object is detected by the back surface detection unit 116 but an object is detected by the back surface detection unit 316, it is assumed that the photographer's face is away from the camera body 100, and the threshold of the bounce drive range is set to the first value. Set to a threshold of 2.

  In addition, there may be a case where an object is detected by the back surface detection unit 116 and no object is detected by the back surface detection unit 316. Such a result is obtained when the main body 300 b of the strobe device 300 is separated from the camera main body 100. If the main body 300b of the strobe device 300 is used away from the camera body 100, the photographer's face may be irradiated with light from the light emitting unit even if the photographer's face is close to the camera body 100. is there. Therefore, when the object is detected by the back surface detection unit 116 and the object is not detected by the back surface detection unit 316, the threshold value of the bounce drive range is preferably set to a value smaller than the first value. In this embodiment, when the object is detected by the back surface detection unit 116 and the object is not detected by the back surface detection unit 316, the threshold value of the bounce drive range is set to the second threshold value. In the present embodiment, even when the object is not detected by the back surface detection unit 116 and the back surface detection unit 316, the threshold value of the bounce drive range is set to the second threshold value, so that the object is detected by the back surface detection unit 316. If not, the second threshold value is set. However, when the object is not detected by the back surface detection unit 316, the threshold value may be varied depending on whether or not the object is detected by the back surface detection unit 316.

  In step S429, when the rotation angle indicated by the calculation result in step S425 exceeds the limit angle that is the threshold value of the bounce drive range, the limit angle is set to the target angle of the movable unit 300b and the movable unit 300b is rotated. Is calculated. When the rotation angle indicated by the calculation result of step S425 does not exceed the limit angle that is the threshold value of the bounce drive range, the rotation angle indicated by the calculation result is set as the target angle of the movable portion 300b to rotate the movable portion 300b. The amount of driving when it is performed is calculated.

  Further, when the strobe device 300 is tilted when calculating the bounce drive amount, the drive amount is also corrected based on the detection result of the posture detection circuit 360. For example, the inclination angle of each axis of the posture detection circuit 360 is detected, a correction driving amount that cancels the inclination angle to the calculated driving amount is calculated, and the driving amount is corrected. However, as a result of correcting the drive amount, when the threshold value of the set bounce drive range is exceeded, the correction method is switched according to the output of the back surface detection unit 116 and the output of the back surface detection unit 316.

  Of the combinations of the output of the back surface detection unit 116 and the output of the back surface detection unit 316, in the case of a combination in which the threshold value of the bounce drive range is set to the second threshold value, the set threshold value is also corrected. On the other hand, in the combination of the output of the back surface detection unit 116 and the output of the back surface detection unit 316 that sets the threshold value of the bounce drive range to the second threshold value, the set threshold value is not corrected. For example, when the first threshold value is set, the rotation angle indicated by the calculation result is 120 degrees, and the correction drive amount is γ, the first threshold value is corrected so that the bounce drive range is up to 120 + γ degrees. . In the case of a combination in which the threshold value of the bounce drive range is set to the first threshold value, it is difficult for the photographer (user) to be irradiated with light from the illumination device even if the bounce drive range is expanded. Therefore, in the case of a combination in which the threshold value of the bounce drive range is set to the first threshold value, correction for expanding the bounce drive range according to the attitude of the strobe device 300 is performed. Note that correction for reducing the bounce drive range is not performed.

  On the other hand, when the second threshold value is set, the rotation angle indicated by the calculation result is 90 degrees, and the correction drive amount is γ, the second threshold value is not corrected and 90 degrees is defined as the bounce drive range. To do. In the case of a combination in which the bounce drive range threshold is set to the second threshold, if the bounce drive range is expanded, the light from the illumination device is likely to be irradiated to the photographer (user). Therefore, in the case of a combination in which the bounce drive range threshold is set to the second threshold, neither the correction for expanding the bounce drive range nor the correction for reducing the bounce drive range is performed according to the attitude of the strobe device 300.

  Here, the detection result of the attitude detection circuit 140 may be used instead of the attitude detection circuit 360.

  After the drive amount is calculated, the calculated result is stored in the built-in memory of the flash microcomputer 310, and the process proceeds to step S430.

  In step S430, the flash microcomputer 310 rotates the movable part 300b using the bounce circuit 340 based on the result calculated in step S429. Thereafter, the process proceeds to step S431.

  In step S431, the stroboscopic microcomputer 310 determines whether or not the movable unit 300b is at the target angle (calculation position) based on the detection results of the bounce angle detection circuits 340a and 340c. If it is the target angle, the process proceeds to step S433, and if it is not the target angle, the process proceeds to step S432.

  In step S432, the stroboscopic microcomputer 310 confirms whether or not a predetermined time has elapsed since the movable unit 300b started to rotate to the target angle. If the predetermined time has elapsed, the process proceeds to step S433, and if the predetermined time has not elapsed, the process proceeds to step S431.

  In step S433, the stroboscopic microcomputer 310 determines whether or not the charging voltage of the main capacitor 302d is equal to or higher than a predetermined value (charging completion). If it is equal to or higher than the predetermined value, the process proceeds to step S435. Migrate to

  In step S434, the stroboscopic microcomputer 310 starts the operation of the booster circuit block 302 again and charges the main capacitor 302d. After charging, the process proceeds to step S435.

  In step S435, the flash microcomputer 310 performs a charging completion process such as transmitting a charging completion signal to the camera microcomputer 101, and proceeds to step S436.

  In step S436, the flash microcomputer 310 determines whether or not a light emission start signal has been received from the camera microcomputer 101 as a light emission command. If it has been received, the process proceeds to step S437, and if not, the process returns to step S402.

  In step S437, the flash microcomputer 310 instructs the light emission control circuit 304 to emit light according to the received light emission start signal, and the light emission control circuit 304 causes the discharge tube 305 to emit light according to the light emission instruction. Return. In step S437, for a series of emission such as pre-emission and main emission for calculating the adjusted emission amount, the process returns to step S402 after the series of emission ends.

  As described above, the process associated with the light emission of the strobe device 300 including the auto bounce operation is executed.

  Note that the flowcharts described in the present embodiment are merely examples, and various processes may be executed in a different order from the flowcharts described in the present embodiment if there is no problem. Further, in the present embodiment, the case where the ceiling is used as the reflection surface at the time of bounce flash photography is described. However, the mode is not limited to the ceiling and may be arbitrarily set if the mode is set in the direction intended by the photographer such as a wall. Needless to say, the reflective surface can be changed.

  As described above, in the present embodiment, the bounce drive range limit angle is set based on the output of the back surface detection unit 116 and the output of the back surface detection unit 316 during bounce flash photography. Therefore, it is possible to perform effective bounce flash photography and reduce the user from being irradiated with light from the illumination device.

  In the above embodiment, the method for setting the limit angle for limiting the rotation angle of the movable part 300b is not limited. For example, the limiting angle may be set so as to limit the relative positional relationship between the main body portion 300a and the movable portion 300b. In this case, an angle at which the movable unit 300b can be rotated in the left-right direction and an angle at which the movable unit 300b can be rotated in the up-down direction with respect to the main body 300a is set as the limit angle. Alternatively, the limit angle may be set based on the direction of gravity. In this case, an angle at which the irradiation direction of the light emitting unit can be directed with respect to the gravity direction is set as the limit angle.

  In the above-described embodiment, the example in which the strobe device 300 sets a limit angle that limits the rotation angle of the movable unit 300b has been described. However, the camera body 100 executes at least a part of the processing executed by the strobe device 300. You may make it do. For example, the camera body 100 may set a limit angle for limiting the rotation angle of the movable unit 300b based on information regarding the output of the back surface detection unit 116 and the output of the back surface detection unit 316 received from the strobe device 300. Then, information regarding the limit angle set in the strobe device 300 may be transmitted from the camera body 100.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 100 Imaging device 101 Camera microcomputer 112 Input part 113 Display part 116 Back surface detection part 140 Posture detection circuit 200 Lens unit 201 Lens microcomputer 300 Strobe device 300a Main body part 300b Movable part 308 Distance acquisition part 310 Strobe microcomputer 312 Input part 313 Display part 316 Back surface Detection unit 317 Connection unit 318 Accessory detection unit 340 Bounce circuit 360 Attitude detection circuit 400 Optical accessory

Claims (7)

A main body detachably mounted on the imaging device;
A movable part rotatable with respect to the main body part;
A light emitting part provided in the movable part;
Driving means for rotating the movable part;
The first body for detecting an object within the first detection range, which is disposed on a surface opposite to the subject-side surface of the main body in a state where the main body is mounted on the imaging apparatus. Detection sensor of
According to the information about the output of the second detection sensor received from the imaging device having the second detection sensor for detecting an object within the second detection range and the output of the first detection sensor, An illuminating apparatus comprising: a setting unit that sets a limit angle that limits a rotation angle when the movable unit is rotated by the driving unit.   The setting means indicates that the output of the first detection sensor indicates an object within the first detection range, and information regarding the output of the second detection sensor is within the second detection range. Than when indicating that the second detection sensor has been detected, the output of the first detection sensor indicates that the object has been detected within the first detection range, and information relating to the output of the second detection sensor is The lighting device according to claim 1, wherein the limit angle is made smaller when an object is not detected within a detection range.   The setting means indicates that the output of the first detection sensor indicates an object within the first detection range, and information regarding the output of the second detection sensor is within the second detection range. The output of the first detection sensor does not indicate that an object is detected within the first detection range, and information related to the output of the second detection sensor is more than the second. The lighting device according to claim 1 or 2, wherein the limit angle is made smaller when an object is not detected within the detection range.   The lighting device according to claim 1, wherein the driving unit rotates the movable part within a range not exceeding the limit angle. A main body that is detachably attached to the imaging device, a movable part that is rotatable with respect to the main body, a light emitting part that is provided in the movable part, a drive unit that rotates the movable part, In a state where the main body is mounted on the imaging device, the first main body is disposed on a surface opposite to the subject-side surface of the main body and detects a first object within the first detection range. An imaging device capable of mounting a lighting device having a detection sensor,
With the viewfinder,
A second detection sensor disposed in the vicinity of the viewfinder for detecting an object within a second detection range;
Restriction for limiting a rotation angle when the movable unit is rotated by the driving unit according to the information about the output of the first detection sensor received from the lighting device and the output of the second detection sensor. An imaging apparatus comprising: setting means for setting an angle. An imaging system including an illumination device and an imaging device,
The lighting device includes:
A main body detachably mounted on the imaging device;
A movable part rotatable with respect to the main body part;
A light emitting part provided in the movable part;
Driving means for rotating the movable part;
The main body is disposed on the surface of the main body opposite to the subject side in a state where the main body is mounted on the imaging device, and is used to detect an object within the first detection range. 1 detection sensor;
Setting means for setting a limit angle for limiting a rotation angle when the movable unit is rotated by the driving unit;
The imaging device
With the viewfinder,
A second detection sensor disposed in the vicinity of the viewfinder for detecting an object within a second detection range;
The imaging system according to claim 1, wherein the setting means sets the limit angle according to information related to an output of the second detection sensor received from the imaging device and an output of the first detection sensor. A main body that is detachably attached to the imaging device, a movable part that is rotatable with respect to the main body, a light emitting part that is provided in the movable part, a drive unit that rotates the movable part, In a state where the main body is mounted on the imaging device, the first main body is disposed on a surface opposite to the subject-side surface of the main body and detects a first object within the first detection range. A control method of a lighting device having a detection sensor,
According to the information about the output of the second detection sensor received from the imaging device having the second detection sensor for detecting an object within the second detection range and the output of the first detection sensor, A control method for an illuminating device, comprising: a setting step for setting a limit angle for limiting a rotation angle when the movable unit is rotated by the driving unit.

Images