JP2006276469A - Camera system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely inform a user of the attachment defect and the attachment completion of an interchangeable unit. <P>SOLUTION: A lens unit 4 is freely attached to/detached from the body-side mount part 10 of a camera body 3. When the lens unit 4 is attached, bayonet pawls 9a to 9c are made to pass between the bayonet pawls 11a to 11c of the camera body-side mount part 10 so as to bring a lens-side mount part 8 into contact with the body-side mount part 10, then a click pin 53 is pressed inside the mount part 10, and starting the attachment of the lens unit 4 is detected. When the bayonet pawls 9a to 9c are meshed with the bayonet pawls 11a to 11c by rotating the lens unit 4 by a predetermined angle within a predetermined time after starting the attachment, an engaging pin 52 is engaged with the lens-side mount part 8, and the completion of the attachment is detected, to be informed to the user. If the completion of attachment is not detected within the predetermined time, it is decided as the attachment defect to be informed to the user. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a camera system in which an exchange unit including a lens unit can be attached to a camera body.

  2. Description of the Related Art Conventionally, a lens interchangeable camera (for example, Patent Document 1) in which various photographing lenses are detachably attached to a camera body is known. With this interchangeable lens camera, the interchangeable lens can be detachably attached to the camera body by providing a mount with bayonet claws on the interchangeable lens and the camera body, and the mount on the interchangeable lens side as the mount on the camera body side. Generally, the contact lens is in contact at a predetermined position, and while maintaining the contact state, the interchangeable lens is rotated to a predetermined angular position so that the bayonet claws are engaged with each other, and the interchangeable lens is locked at that position to be in a mounted state. is there.

  By the way, recently, since the price of the image sensor has been reduced and the number of pixels has been increasing, an interchangeable lens type digital camera has been widely used in place of the conventional interchangeable lens camera for silver salt film. . In this interchangeable lens digital camera, a subject image formed by a photographing lens is converted into image data by an image pickup device such as a CCD, and recorded on a recording medium such as a built-in memory or a memory card.

  In this interchangeable lens digital camera, an existing system for silver salt film is not diverted, and as a new configuration of the interchangeable lens digital camera, it is considered to incorporate an image sensor on the interchangeable lens side. As a result, there is no need to optically connect the interchangeable lens and the camera body, and it is only necessary to electrically connect the interchangeable lens side and the camera body side, so that the structure can be made relatively simple. Can be obtained.

On the other hand, in an interchangeable lens type digital camera, the connection terminal on the camera body side and the contact on the interchangeable lens side are contacted and electrically connected, so the camera body side detects that the interchangeable lens is attached. Therefore, control must be performed so as to transmit and receive electrical signals between the interchangeable lens and the camera body, and to supply power. Therefore, in the cameras described in Patent Documents 2 and 3, an interlocking pin that is displaced in conjunction with the mounting operation of the interchangeable lens and a detection switch that is switched by the displacement of the interlocking pin are provided, and this detection switch is turned on. / The mounted state of the interchangeable lens is detected by the off state.
JP-A-8-171130 Japanese Patent Laid-Open No. 2001-177023 JP 2001-30569 A JP 2001-30569 A

  However, in the cameras described in Patent Documents 2 to 4, it is possible to detect that the interchangeable lens has been attached, but when the attachment has become incomplete, that is, a mount structure having a bayonet claw. Then, after the interchangeable lens and the camera body mount are in contact with each other, the interchangeable lens is not rotated, or only halfway through the specified angular position and stopped halfway. This could not be detected when the wearing was incomplete. Therefore, the user does not realize that the interchangeable lens is not completely installed, so that the camera is in a state in which shooting is not possible, or an electrical signal is not transmitted to the camera body, and it is mistaken that a failure has occurred. There was a possibility of being trapped. Especially in the case of a system in which an image sensor is provided on the interchangeable lens side, the electrical signal of the image data acquired by the image sensor is also transmitted via the connection terminal provided on the mount. Since image data is not captured, it is necessary to more reliably detect whether the lens unit is incompletely mounted or has been completely mounted so that the user can recognize it.

  The present invention has been made in view of the above circumstances, and when an interchangeable unit including a lens unit is mounted on a camera body, the user can check whether the mounting is incomplete or the mounting is completed. An object is to provide a camera system.

  The camera system of the present invention is a camera system in which a body side mount portion to which any of a plurality of replacement units including a lens unit is detachably mounted is provided in the camera body, and detecting means for detecting completion of mounting of the replacement unit The camera body or the replacement unit is provided with notification means for notifying completion of attachment when detection by the detection means is performed.

  Alternatively, in the camera system of the present invention, first detection means for detecting the start of mounting of the replacement unit, second detection means for detecting completion of mounting of the replacement unit, and start of mounting by the first detection means. Monitoring the presence or absence of detection of completion of attachment by the second detection means triggered by the detection of the start of attachment by the first detection means. If the completion of attachment by the second detection means is not detected between the start of measurement by the time measurement means and the elapse of a predetermined time, the attachment of the replacement unit is incomplete. The camera body is provided with a mounting incomplete notification means for notifying.

  A mounting completion notifying means for notifying that the replacement unit is in a mounting completed state when the second detecting means detects the mounting completion within a predetermined time from the start of measurement by the time measuring means; It is provided on the camera body.

  Furthermore, the notification means is a display unit that is provided on the same surface as the position where the body-side mount unit is arranged on the camera body, and displays by turning on or blinking a light source incorporated therein. preferable. Alternatively, the notification means is the same as the image display means provided on the surface of the camera body opposite to the position where the body-side mount portion is disposed, and the position where the body-side mount portion is disposed. It is preferable that the display unit is provided with a display unit which is provided on the surface and performs display by turning on or blinking a light source incorporated therein.

  The replacement unit side mount portion has a plurality of bayonet claws, and the body side mount portion is brought into contact with each other with the replacement unit side mount portion aligned with a predetermined position. The replacement unit has a bayonet claw that meshes with the bayonet claw on the replacement unit side by rotating the replacement unit by a predetermined angle in a contact state, and the first detection means includes the replacement unit side mount portion and the body side mount. A first detection switch that is turned on when the contact portion is in contact with the second portion, wherein the second detection means is configured to change the replacement unit from the contact state between the replacement unit-side mount portion and the body-side mount portion. Preferably, the second detection switch is turned on when the camera is rotated by a predetermined angle with respect to the camera body. Furthermore, it is preferable that the lens unit incorporates a photographic lens and an image sensor, and is electrically connected to the camera body via a connection terminal provided in the mount portion.

  In the camera system of the present invention, the camera body or the replacement unit is provided with a detection means for detecting the completion of the mounting of the replacement unit, and a notification means for notifying the completion of the mounting when detection by the detection means is performed. The user can know the mounting state of the replacement unit.

  In the camera system of the present invention, the first detection unit that detects the start of mounting of the replacement unit, the second detection unit that detects the completion of mounting of the replacement unit, and the detection of the start of mounting by the first detection unit. The timing means for measuring the time since the start, and the presence or absence of detection of completion of attachment by the second detection means when the detection of the start of attachment by the first detection means is performed. Incomplete mounting notification means for notifying that the mounting of the replacement unit is incomplete when the second detection means does not detect the completion of mounting until the predetermined time elapses from the start of measurement. Are provided on the camera body, so that the completion of mounting and the incomplete mounting state are reliably detected, and the user can be notified of the incomplete mounting state.

  Furthermore, when the completion of attachment is detected by the second detection means within a predetermined time from the start of measurement by the time measurement means, attachment completion notifying means for notifying that the replacement unit is in an attachment complete state is provided. By providing it on the body, it is possible to more reliably notify the completion of mounting or the incomplete mounting state.

  Alternatively, the notification means is provided on the same surface as the position where the body-side mount portion is arranged in the camera body, and is a display portion that performs display by turning on or blinking a light source incorporated therein. Since the replacement unit can be mounted while looking at the display portion, it is possible to notify the user of the mounting completion or the mounting incomplete state more reliably.

  Further, the notification means is the same as the image display means provided on the surface of the camera body opposite to the position where the body side mount portion is disposed, and the position where the body side mount portion is disposed. Since the display unit is provided on the surface and performs display by turning on or blinking the light source incorporated therein, the image display means or the display unit can be used regardless of the orientation of the camera body. Either of them can be visually recognized, and it is possible to reliably notify the user of the completion of the mounting or the incomplete mounting state.

  Furthermore, the replacement unit side mount portion has a plurality of bayonet claws, and the body side mount portion is brought into a contact state in which the replacement unit side mount portion is brought into contact with each other according to a predetermined position. The exchange unit has a bayonet claw that meshes with the bayonet claw on the exchange unit side by rotating the exchange unit by a predetermined angle in this contact state, and the first detection means includes the exchange unit side mount portion and the body side A first detection switch that is turned on when the mount portion is in contact with the mount portion; and the second detection means is configured to change the replacement unit from the contact state between the replacement unit side mount portion and the body side mount portion. A second detection switch that is turned on when the unit is rotated by a predetermined angle with respect to the camera body; The unit incorporates a photographic lens and an image sensor, and is electrically connected to the camera body via a connection terminal provided in the mount portion, so that it is possible to reliably detect the mounting state of the replacement unit. Therefore, it is possible to reliably notify the user of the installation completion or the installation incomplete state.

  A digital camera to which a first embodiment of the present invention is applied will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the digital camera 2 includes a camera body 3 and a lens unit 4. A lens unit 4 is detachably attached to the camera body 3, and the camera body 3 and the lens unit 4 are electrically connected when mounted. 1 shows a state in which the lens unit 4 is attached to the camera body 3, and FIG. 2 shows a state in which the lens unit 4 is removed.

  The lens unit 4 is provided with a lens side mount portion 8, and the lens side mount portion 8 is formed with three lens side bayonet claws 9a to 9c. A body-side mount portion 10 is provided on the front surface of the camera body 3. Body side bayonet claws 11a to 11c corresponding to the lens side bayonet claws 9a to 9c are integrally formed on the body side mount portion 10. The lens unit 4 can be mounted on the camera body 3 by engaging the lens side bayonet claws 9a to 9c with the body side bayonet claws 11a to 11c. Further, a mount lid 12 that is urged forward by a coil spring 13 (see FIG. 12) is provided inside the body-side mount portion 10, and dust enters the camera body 3 when the lens unit is not attached. To prevent.

  In addition, a lock release button 14 to be described later is provided in the vicinity of the body side mount portion 10. The lock release button 14 is operated when the lens unit 4 is removed, and the lens unit 4 can be unlocked by pressing.

  On the upper surface of the camera body 3, there are provided a release button 16 that is pressed during shooting and a mode operation unit 17 that is operated when switching between shooting and playback modes. Further, a strobe 18 and a mounting confirmation display window 19 are provided on the front surface of the camera body 3. Inside the attachment confirmation window 19, LEDs 91a and 91b (see FIG. 13) are provided. As will be described later, these LEDs 91a and 91b emit green light and orange light respectively when the lens unit 4 is mounted to inform the user of whether the mounting is in progress, the mounting is completed, or the mounting is incomplete.

  More specifically, as shown in FIG. 3, the rear surface of the camera body 3 is provided with an LCD 20 on which captured images and various setting conditions are displayed, and a power switch 21. Furthermore, the camera body 3 includes a speaker 93 (see FIG. 13). A plurality of small holes 23 for transmitting sound output from the speaker 93 to the outside are provided on the rear surface of the camera body 3, and the speaker 93 is disposed inside the small hole 23.

  As shown in FIG. 2, the lens unit 4 includes a lens barrel portion 6 and a lens side mount portion 8. The lens barrel 6 incorporates therein a photographing lens 24, a CCD (imaging device) 25, and a circuit board on which a drive circuit for driving the CCD 25 is provided.

  As shown in detail in FIGS. 4 and 5, the lens-side mount portion 8 includes a mount body 34, a contact substrate 35, and a pressing plate 36. The mount body 34 is provided integrally with the rear end portion of the lens barrel 6. The mount body 34 is integrally provided with a base member 39, a cylindrical portion 40 located at the center of the base member 39, and bayonet claws 9 a to 9 c protruding from the outer periphery of the cylindrical portion 40. In the present embodiment, the three bayonet claws 9a to 9c are provided on the lens side mount portion 8, but the number of bayonet claws is not limited to this, and may be two or four. Of the bayonet claws 9a to 9c, the bayonet claw 9a is integrally formed with a retaining projection 9d at one end thereof.

  An engagement hole 41 and a click groove 42 are formed in the base member 39. As shown in the sectional view of FIG. 6, the engagement hole 41 is cut out in a cylindrical shape from the contact surface 39 a of the base member 39, and engages with a lock pin 52 described later when the lens unit 4 is mounted. As shown in the cross-sectional view of FIG. 7, the click groove 42 is a triangular groove formed by cutting a cross section along the rotation direction R into a triangular shape from the contact surface 39 a, and the lens unit 4 is attached. Sometimes it abuts on a click pin 53 described later.

  As shown in FIG. 4, the contact substrate 35 has a shape substantially similar to the mount main body 34 and is slightly smaller than the mount main body 34, and is fitted into a recess 34 a formed on the back surface of the mount main body 34. It is. The contact board 35 includes a central disc portion 43 and projecting portions 44 a to 44 c projecting from the disc portion 44. The protrusions 44a to 44c are arranged so as to be located inside the bayonet claws 9a to 9c, respectively. Contact groups 45a to 45c are mounted on the protrusions 44a to 44c, respectively. The contact groups 45 a to 45 c are arranged at rotationally symmetric positions with an equal angular interval of 120 ° with respect to the center of the contact board 35.

  As shown in detail in FIG. 5, the contact group 45 a includes a plurality (eight in this embodiment) of contacts 46 a to 46 h, and is arranged in parallel along the rotation direction R when the lens unit 4 is attached to the camera body 3. Is arranged. Among these contacts 46a to 46h, the contacts 46a to 46g are all arranged at equal intervals with α being the angular pitch between adjacent contacts. Only 46h positioned at the tail end in the rotation direction R is arranged such that the angular pitch β with the adjacent contact 46g is wider than the angular pitch α between the other contacts (α <β). The contact board 35 is sandwiched between the pressing plate 36 and the mount main body 34 and fixed by being fastened together with screws 47, and is electrically connected to the drive circuit board of the CCD 25 by a flexible board or the like (not shown). It is connected. The contact groups 45a to 45c all have the same configuration, and the remaining contact groups 45b and 45c are similarly configured from the contacts 46a to 46h, respectively.

  The body-side mount portion 10 has a configuration shown in detail in FIGS. 8 and 9, and includes a base member 50 and bayonet claws 11 a to 11 c formed integrally with the base member 50. In FIG. 8, in order to prevent complication of the drawing, the mount lid 12 is shown in a retracted state. However, the mount lid 12 is normally positioned so as to close the opening at the center of the base member 50. The interior is not exposed. Moreover, in FIG. 8, in order to show the inner side of the mount part 10, a part of bayonet claw 11c is notched and shown.

  The base member 50 is formed in an annular shape, and is fixed to the exterior cover 3a of the camera body 3 by screwing or the like. The bayonet claws 11 a to 11 c are arranged so as to protrude from the inner peripheral surface of the base member 50. Further, the body side mount portion 10 is provided with a terminal board 51, a lock pin 52, and a click pin 53.

  When the lens unit 4 is attached to the camera body 3, the lens side bayonet claws 9a to 9c are inserted in accordance with the positions of the grooves 15a to 15c formed between the body side bayonet claws 11a to 11c. Thereby, the back surface (contact surface) 39a of the base member 39 and the front surface (contact surface) 50a of the base member 50 are in contact with each other. When the lens unit 4 is rotated by a predetermined angle along the counterclockwise direction (rotation direction R) while maintaining this contact state, the lens-side bayonet claws 9a to 9c and the body-side bayonet claws 11a to 11c are engaged with each other. The unit 4 is attached to the camera body 3. When the lens unit 4 is rotated by a predetermined angle when the lens unit 4 is attached to the camera body 3, the retaining protrusion 9d comes into contact with the mount-side bayonet claw 11a to restrict the rotation of the lens unit 4.

  The terminal board 51 is disposed on the back side of the base member 50. As shown in detail in FIG. 10, the terminal substrate 51 has an opening 51 a that matches the base member 10 at the center, and terminal groups 54 a to 54 c are mounted in the vicinity of the opening 51. The terminal groups 54a to 54c are arranged in accordance with the positions of the bayonet claws 11a to 11c, respectively, and are hidden so as to overlap with the bayonet claws 11a to 11c when the body side mount portion 10 is viewed from the front.

  The terminal group 54a includes a plurality (eight in this embodiment) of connection terminals 55a to 55h, and is fixed to the terminal substrate 51 in parallel along the rotation direction R. The connection terminals 55a to 55h are arranged at positions corresponding to the contact points 46a to 46h of the lens side mount portion 8 described above. That is, when the lens unit 4 is attached to the camera body 3, the connection terminals 55a to 55h are in contact with the contacts 46a to 46h. Further, among the connection terminals 55a to 55h, the connection terminals 55a to 55g are all arranged at equal intervals with an angle pitch α between adjacent connection terminals. Only the connection terminal 55h located at the tail end in the rotation direction R has an angular pitch β with the adjacent connection terminal 55g wider than the angular pitch α between other contacts. The terminal groups 54a to 54c all have the same configuration, and the remaining terminal groups 54b and 54c are similarly configured from connection terminals 55a to h, and positions corresponding to the contacts 46a to 46h of the lens side mount portion 8. It is arranged in.

  As shown in detail in FIGS. 11 and 12, the lock pin 52 is provided so as to be able to protrude and retract from a guide hole 55 formed in the base member 50, and a retaining protrusion 52 a and a connecting groove 52 b are formed. Yes. The retaining protrusion 52a contacts the back surface 50b of the base member 50 so that the lock pin 52 is not detached.

  A connecting portion 56 formed integrally with the lock release button 14 is engaged with the connecting groove 52 b of the lock pin 52. As a result, the lock pin 52 and the lock release button 14 move together in the front-rear direction. The unlocking button 14 is integrally formed with a pressing shaft 59 on the back side thereof. The pressing shaft 59 has a biasing spring 58 inserted therethrough and a support member 60 fixed to the exterior cover 3a. It is supported by. The lock release button 14 and the lock pin 52 are urged forward by being urged by the urging spring 58. As a result, the lock pin 52 protrudes forward from the base member 50, and the lock release button 14 protrudes from the surface of the exterior cover 3a.

  A first leaf switch (first detection means) 61 is disposed behind the support member 60. The first leaf switch 61 is formed by overlapping two metal contact pieces 61a and 61b, and is turned on when the metal contact pieces 61a and 61b come into contact with each other.

  When the lens unit 4 is attached to the camera body 3, if the base member 39 of the lens-side mount portion 8 and the base member 50 of the body-side mount portion 10 are brought into contact with each other, the lock pin 52 is removed from the base member 39. Receiving the pressure, it moves backward into the guide hole 55 against the biasing force of the biasing spring 58. When the lock pin 52 is retracted, the pressing shaft 59 presses the metal contact pieces 61a and 61b, so that the metal contact pieces 61a and 61b come into contact with each other and the first leaf switch 61 is turned on. Then, when the lens unit 4 is rotated along the rotational direction R while the contact state of the base members 39 and 50 is maintained, the engagement hole 41 of the lens side mount portion 8 moves to the position of the lock pin 52. Come. When the engagement hole 41 reaches the position of the lock pin 52, the lock pin 52 protrudes from the guide hole 55 by the urging force of the urging spring 58 and engages with the engagement hole 41. As a result, the lens unit 4 is locked to the camera body 3 and is completely attached.

  The click pin 53 is provided so as to be able to protrude and retract from a guide hole 68 formed in the base member 50, and a retaining protrusion 53a and a pressing shaft 53b are integrally formed. The retaining protrusion 53a is in contact with the back surface 50a of the base member 50 so that the click pin 53 is not detached.

  The pressing shaft 53b of the click pin 53 is supported by a support member 65 fixedly attached to the exterior cover 3a while an urging spring 64 is inserted therethrough. The click pin 53 is urged forward by the urging force from the urging spring 64 and protrudes forward from the base member 50. A second leaf switch (second detection means) 66 is disposed behind the support member 65. The second leaf switch 66 is formed by overlapping two metal contact pieces 66a and 66b, and is turned on when the metal contact pieces 66a and 66b come into contact with each other.

  When the lens unit 4 is attached to the camera body, if the base member 39 of the lens side mount portion 8 and the base member 50 of the body side mount portion 10 are brought into contact with each other, the click pin 53 is the same as the lock pin 52 described above. The second leaf switch 66 is turned on because the pressing shaft 53b presses against the metal contact pieces 66a and 66b. When the lens unit 4 is rotated along the rotation direction R while the contact state of the base members 39 and 50 is maintained, the click groove 42 of the lens side mount portion 8 moves to the position of the click pin 53. come. When the click groove 42 reaches the position of the click pin 53, the click pin protrudes from the guide hole 55 by the biasing force of the biasing spring 64 and abuts on the click groove 42. Thus, when the lens unit 4 is mounted, a click feeling can be given to the user's finger.

  FIG. 12 shows the electrical configuration of the camera system 2. A CCD 25 is disposed behind the photographing lens 24, and a shutter mechanism, a diaphragm mechanism (not shown), and the like are disposed in front of the CCD 25.

  The CCD 25 is connected to a CCD driver 73, and the driving of the CCD 25 is controlled by a lens unit system control unit 71 (hereinafter, system control unit 71) via the CCD driver 73. The CCD 25 converts an optical subject image into an electrical imaging signal and outputs it. The image pickup signal is amplified to an appropriate level by an amplifier 74 and then digitally converted by an A / D conversion circuit 75 to become image data. This image data is transmitted to the camera body 3 side via the serial driver 76. The system control unit 71 controls the photographing processing on the lens unit 4 side based on a command from the camera body system control unit 85 (hereinafter, system control unit 85).

  Image data from the lens unit 4 is written into the memory 78 via the serial driver 77. The signal processing unit 69 reads image data from the memory 78 and performs various image processing such as gradation conversion, white balance correction, and γ correction. The image data subjected to the image processing is input to the LCD driver 70 and displayed on the LCD 20 as an image. The captured image is displayed on the LCD 20 as a through image. When the mode operation unit 17 is operated to set the playback mode, the image recorded on the recording medium 83 can be displayed on the LCD 20 and the shooting setting conditions can be displayed on the LCD 20.

  When the release button 12 is pressed, image data subjected to image processing is recorded on the recording medium 83 under the control of the media controller 82. When the release button 16 is pressed, the strobe 18 is driven according to the amount of light from the shooting environment. The system control unit 85 sends commands to the system control unit 71 and controls shooting processing, image display processing, recording processing, and the like on the camera body side. The system control unit 85 is connected to the release button 16, the mode operation unit 17, and the power switch 21.

  A battery 86 is disposed in the camera body 3 to supply power to each part of the camera body 3. Furthermore, the lens unit 4 includes a sub-battery 87, and the main battery 86 on the camera body 3 side and the sub-battery 87 on the lens unit 4 side are connected via the contacts 9a to 9c and the connection terminals 11a to 11c. Electric power is supplied from the main battery 86 to the sub battery 87, and further, electric power is supplied from the sub battery 87 to each part of the lens unit 4.

  Further, the camera body 3 is provided with a mounting detection unit 89 that detects the mounting of the lens unit 4 together with the first and second leaf switches 61 and 66. The attachment detection unit 89 is connected to the connection terminals 55h constituting the terminal groups 11a to 11c, and when the terminal groups 11a to 11c are completely in contact with the contact groups 9a to 9c on the lens unit 4 side, the sub battery 87 is connected. And the fact that the lens unit 4 is attached is transmitted to the system control unit 85. The state in which the contact groups 9a to 9c are completely in contact with the connection terminals 11a to c is the contacts 46a to 46h constituting the contact groups 9a to 9c and the corresponding connection terminals 55a of the terminal groups 11a to 11c. -H are all in contact. That is, the attachment detection unit 89 is electrically connected to the lens unit 4 when the contact 46h positioned at the tail end in the rotation direction R and the connection terminal 55h are in contact with each other, and detects the attachment state. be able to. In addition, as described above, the contact 46h and the connection terminal 55h used for detecting the mounting state have a wider angular pitch than between other contacts and between terminals. Thus, when the contact 46h and the connection terminal 55h are connected, the other contacts 46a to 46g and the connection terminals 55a to 55g can be reliably connected.

  Further, the camera body 3 is provided with LEDs 91a and 91b, an LED driver 92 that controls the light emission, a speaker 93, and a mounting monitoring timer 94.

  Hereinafter, the operation of the above configuration will be described with reference to the flowchart shown in FIG. When attaching the lens unit 4 to the camera body 3, the user first turns on the power of the camera body 3, and then, as described above, the lens-side bayonet claws 9a to 9d are positioned in the grooves 15a to 15c of the body-side mount portion 10, respectively. The base member 39 and the base member 50 are brought into contact with each other by inserting the positions c. As a result, the first and second leaf switches 61 and 66 are turned on, and it is detected that the lens unit 4 has been attached. The system control unit 85 that has detected the start of attachment of the lens unit 4 causes the LED 91a in the attachment confirmation display window 19 to blink green. Thereby, the user can recognize that the lens unit 4 is in a mounting start state, that is, the lens unit 4 side and the camera body side 3 are in a contact state.

  The system control unit 85 that has detected the start of attachment of the lens unit 4 further starts monitoring the on / off state of the first leaf switch 61, reads out the attachment monitoring time T1 from the memory 78, and activates the attachment monitoring timer 94. And the count is continued until the count of this time reaches the mounting monitoring time T1. When both the first and second leaf switches 61 and 66 are switched from the on state to the off state during the counting of the mounting monitoring timer 94, the mounting release state is detected. That is, if the user removes the lens unit 4 without attaching the lens unit 4 from the above contact state, the base member 39 of the lens side mount portion 8 is separated from the lock pin 52 and the click pin 53. Both the first leaf switch 61 and the second leaf switch 66 are turned off. When this unmounting state is detected, the system control unit 85 turns off the LED 91a and stops detecting the mounting of the lens unit 4.

  On the other hand, when only the first leaf switch 61 is switched from the on state to the off state and the second leaf switch 66 remains on during the count of the mounting monitoring timer 94 after the detection of the start of the mounting described above, the lens unit 4 is detected to be completed. That is, the user rotates the lens unit 4 counterclockwise with respect to the camera body 3 while maintaining the above-described contact state, and when reaching a predetermined angle, the bayonet claw 11a contacts the retaining projection 9d, The lock pin 52 is engaged with the engagement hole 42 to be locked. The first leaf switch 61 is turned off by the movement of the lock pin 52, and the completion of the mounting of the lens unit 4 is detected. At this time, the click pin 53 comes into contact with the click groove 43, but the second leaf switch 66 remains on.

  If the time counted by the mounting monitoring timer 94 when the mounting completion is detected is within the mounting monitoring time T1, the system control unit 85 determines that the mounting of the lens unit 4 has been completed without any problem. The user is notified of the completion of the mounting. As a means for notifying the completion of the mounting, for example, the speaker 93 can be notified by voice (for example, a beeping sound like an alarm sound) or the LED 91a can be switched from a blinking state to a green lighting state. Notify the user. In addition, a message indicating completion of attachment is displayed on the LCD 20. Then, the system control unit 85 that has notified the completion of mounting confirms the mode setting selected by the camera body 3, and when the photographing mode is selected, the digital camera 2 can be photographed with the lens unit 4 activated. State.

  On the other hand, when the wearing monitoring timer finishes counting until the wearing monitoring time T1, and there is no change in the on / off state of the first leaf switch 61 during this period, it is detected that the lens unit 4 is not fully worn. Is done. That is, when the user performs the mounting operation, if the rotation of the lens unit 4 is stopped at a halfway position without reaching a predetermined angle, the first and second leaf switches 61 and 66 are in the on state. The completion of the mounting of the lens unit 4 is not detected. Therefore, in this case, the system control unit 85 notifies the user that the lens unit 4 is not completely mounted. As the notification means of the incomplete mounting state, for example, a voice by the speaker 93 (for example, a beeping sound “beep”) is generated, and further, the blinking of green by the LED 91a is stopped and the blinking of orange by the LED 91b is switched to the user. Make a notification. In addition, the LCD 20 is notified by a message display informing the incomplete mounting state.

  In this way, when notifying the completion of mounting and the incomplete mounting state, if both the lighting and blinking of the LEDs 91a and 91b and the message on the LCD 20 are displayed, the orientation of the camera body 3 as viewed from the user is determined. Even in such a case, the display can be confirmed, and the mounting state of the lens unit 4 can be surely known.

  In the above embodiment, the case where the mounting completion and the incomplete mounting state are detected when the lens unit 4 is mounted after the power of the camera body 3 is turned on is described as an example. However, the present invention is not limited to this. When the lens unit is mounted while the power of the camera body 3 is off, and the start of mounting is detected by the leaf switches 61 and 66, the power of the camera body is turned on. Then, the camera body side control may be performed so that the power supply is turned off after performing the same sequence as described above and notifying the mounting completion or the mounting incomplete state.

  In the embodiment described above, both the start of mounting and the detection of the completion of mounting of the lens unit 4 are performed only by the leaf switch. However, the present invention is not limited to this, and the mounting detection unit 89 detects the completion of mounting. You may make it notify of completion or a mounting incomplete state. In this case, the detection of the start of attachment of the lens unit 4 is detected by a leaf switch interlocked with the movement of the lock pin 52 as in the above-described embodiment, and the attachment is started, that is, the lens side mount portion 8 and the body side. The detection of the completion of mounting by the mounting detection unit 89 is monitored from the contact state of the mount unit 10. If completion of attachment is detected within the attachment monitoring time T1, the completion of attachment is notified, and if not detected within the attachment completion time T1, it is notified that the attachment is incomplete. The subsequent sequence is the same as in the above embodiment.

  Further, in the above-described embodiment, the detection unit that detects the start and end of mounting of the lens unit 4, the mounting monitoring timer that counts the mounting monitoring time, the notification unit that notifies the mounting completion and incomplete mounting state, and controls these However, the present invention is not limited to this, and it may be provided on the lens unit side.

  In the above embodiment, the description has been given using the interchangeable lens type digital camera in which the lens unit is detachable. However, the present invention is not limited to this, and the camera body and the mount part are used for connection, and the contacts and connections provided in the mount part. Any accessory device that transmits and receives electrical signals via a terminal may be used.For example, a storage device that captures data stored in the camera body and stores it in a hard disk built in the device or wirelessly transmits and receives data. The wireless unit that stores the data on the camera body side or sends the data on the camera body to another electronic device, or the intermediate adapter that is sandwiched and fixed between the lens unit and the camera body The present invention can also be applied. Furthermore, the present invention can be applied to cameras other than digital cameras, for example, video cameras.

1 is an external perspective view of a digital camera embodying the present invention when a lens unit is mounted. It is an external perspective view of the digital camera with the lens unit removed. It is a rear view of a digital camera. It is a disassembled perspective view which shows the structure of the mount part of a lens unit. It is a rear view of a lens unit. It is principal part sectional drawing cut | disconnected along the AA of FIG. It is principal part sectional drawing cut | disconnected along the BB line of FIG. It is a perspective view which shows the mount part of a camera body. It is a front view which shows the mount part of a camera body. It is a front view which shows a terminal board. It is a perspective view which shows the structure of a camera body side mount part periphery. It is principal part sectional drawing cut | disconnected along CC line of FIG. It is a block diagram which shows the electric constitution of a digital camera. It is a flowchart which shows a sequence when a digital camera detects and notifies the completion of mounting | wearing of a lens unit, and a mounting incomplete state.

Explanation of symbols

2 Digital Camera 3 Camera Body 4 Lens Unit 8 Lens Side Mount 9a to c Lens Side Bayonet Claw 10 Body Side Mount 11a to c Body Side Bayonet Claw 24 Shooting Lens 25 CCD
46a-h contact 55a-h connection terminal 61, 66 leaf switch

Claims (7)

In a camera system in which a camera body is provided with a body-side mount portion on which any of a plurality of replacement units including a lens unit is detachably mounted.
A camera system comprising a detecting means for detecting completion of mounting of the replacement unit, and a notification means for notifying completion of mounting when detection by the detecting means is performed on the camera body. In a camera system in which a camera body is provided with a body-side mount portion on which any of a plurality of replacement units including a lens unit is detachably mounted.
First detection means for detecting the start of mounting of the replacement unit, second detection means for detecting the completion of mounting of the replacement unit, and a time from when the start of mounting is detected by the first detection means. The timing means for measuring the time and the detection of the completion of attachment by the second detection means are monitored when the detection of the start of attachment by the first detection means is performed, and from the start of measurement by the time measurement means Incomplete mounting notification means for notifying that the mounting of the replacement unit is incomplete when the second detection means has not detected completion of mounting until a predetermined time has elapsed. A camera system provided on the camera body.   A mounting completion notifying means for notifying that the replacement unit is in a mounting completion state when the mounting completion is detected by the second detection means within a predetermined time from the start of measurement by the time measuring means. The camera system according to claim 2, wherein the camera system is provided.   The notification means is a display unit that is provided on the same surface as the position where the body-side mount unit is arranged in the camera body, and that displays by turning on or blinking a light source incorporated therein. The camera system according to claim 2 or 3. The notification means includes an image display means provided on a surface of the camera body opposite to a position where the body side mount portion is disposed, and a position where the body side mount portion is disposed. 4. The camera system according to claim 2, further comprising a display unit that is provided and performs display by turning on or blinking a light source incorporated therein.   The exchange unit-side mount portion has a plurality of bayonet claws, and the body-side mount portion is brought into a contact state in which the exchange unit-side mount portion is brought into contact with each other according to a predetermined position. The bayonet claw that meshes with the bayonet claw on the replacement unit side by rotating the exchange unit by a predetermined angle as it is, and the first detection means includes the exchange unit side mount portion, the body side mount portion, Is a first detection switch that is turned on when a contact state is reached, and the second detection means moves the replacement unit from the contact state between the replacement unit side mount portion and the body side mount portion. 2. The second detection switch which is turned on when rotated by a predetermined angle with respect to the camera body. 5 The camera system according to any one. The camera system according to claim 1, wherein the lens unit includes a photographic lens and an image sensor, and is electrically connected to the camera body via a connection terminal provided in the mount portion. .

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