JP2017211536A - Camera accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera accessory that includes a light emission unit emitting notification light, and prevents environment light from an outside from intruding into an internal mechanism.SOLUTION: A camera accessory, which allows a mount mechanism to be mechanically and electrically mounted to a camera main body, comprises: a light emission unit that emits notification light for notifying users of a corresponding state of a function; a light emission control unit that controls light emission of the light emission unit; a printed substrate that has the light emission unit packaged, and electrically connects the light emission unit to the light emission control unit; and a prism that is made up of light transmissivity synthetic resin. In the prism, formed are: an incidence face that covers the light emission unit and is tightly adhered to the printed substrate; an emission face that is formed in an appearance member to cover an optical opening part, and is tightly adhered to the appearance member; and a reflection face that changes a direction of light to be radiated from the light emission unit in a direction parallel with an optical axis of light to be radiated therefrom, and a shading member of a light leakage prevention is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique of a camera accessory that can be attached to and detached from a camera body via a mount or the like. The camera accessory particularly refers to an interchangeable lens, an intermediate adapter having no lens optical system interposed between the interchangeable lens and the camera body, or an intermediate adapter having a lens optical system.

  Conventionally, in camera accessories that can be attached to and detached from the camera body via a mount or the like, there is a camera accessory technology that can communicate with the camera body unique information corresponding to the photographing lens for imaging subject light on the imaging surface of the camera body. It is disclosed.

  Specific information communicated between the camera body and the camera accessory includes photographing lens identification data (model ID, serial number, etc.) that is arbitrarily set in advance, and optical data such as the focal length and aperture value of the photographing lens. In addition to driving data for driving and controlling the photographing lens, data relating to optical characteristics of the photographing lens is included.

  In Patent Document 1 (Japanese Patent Laid-Open No. 2002-341424), in a camera system in which an intermediate accessory is interposed between a camera body and an interchangeable lens, when unique information is communicated from the interchangeable lens to the camera body, When both the camera body and the interchangeable lens are of the new function type, a technique for switching the control method for correcting the unique information of the intermediate accessory is disclosed.

  On the other hand, camera accessories such as interchangeable lenses and intermediate accessories are generally detachable from the camera body via a mount mechanism. The user selects camera accessories that match the specifications of the mounting mechanism of the camera body, and attaches these camera accessories to the camera body according to the shooting scene.

  In this case, the user can attach the camera body and camera accessory that meet the specifications of the mount mechanism, so that the entire camera system consisting of the camera body and camera accessory can fully demonstrate its functions. There is a risk of misunderstanding.

  As disclosed in Patent Document 1, the camera body, the camera accessory, or the camera system composed of these has been advanced, and if all of these do not correspond to the new function, the latest function is provided. There are cases where it cannot be fully demonstrated.

  However, since the user first mechanically selects a camera accessory that can be attached to the camera body, there is a risk of misrecognizing the correspondence status of detailed functions. In addition, many combinations of the camera body and camera accessories are assumed, and the firmware may be changed later, and the user's combination of the camera body and camera accessories changes the detailed function support status. Even if it is recognized, it is not easy to immediately understand the detailed contents of the corresponding situation.

  In addition, if the mounting mechanism specifications match the camera body, camera accessories made by other companies can be mounted, but camera body manufacturers can handle detailed functions in combination with camera bodies and camera accessories made by other companies. There are cases where the user does not grasp the situation and the user cannot easily grasp this.

  Therefore, there is a need for a notification function that enables a user of the camera body, camera accessory, and camera system to easily recognize the detailed function support status.

  It is conceivable to use various existing devices in order to implement a notification function in the camera accessory. One specific example of enabling more reliable notifications is the display of characters on a liquid crystal device, but it is expensive to install a liquid crystal device in a camera accessory just to notify the status of detailed function support. However, since the camera accessory has a cylindrical shape in accordance with the shape of the lens optical system of the photographing lens, it is difficult to dispose the liquid crystal device on the curved surface.

  Therefore, it is more efficient to implement a notification function using a light emitting device such as an LED. For example, an LED with a built-in IC can emit various emission colors according to the balance of the three primary colors of light, thereby visually informing the user of a plurality of corresponding situations. It is more compact and convenient for mounting on camera accessories.

JP 2012-220654 A

  However, when a light emitting device such as an LED is mounted on a camera accessory, there are the following problems.

  First, there is a problem that it is difficult to secure a sufficient space for mounting a new light emitting device on the camera accessory.

  In the first place, camera accessories are equipped with many user interfaces such as a manual operation ring and changeover switch, and portability is one of the important functions. There are major limitations.

  In addition, camera accessories are mostly curved, and the degree of freedom for installing light emitting devices is not high.

  Furthermore, it is necessary to mount the light emitting device so that ambient light does not enter the inside of the camera accessory from the through hole for passing the light from the light emitting device from the inside of the camera accessory to the outside.

  If external light enters the inside of the camera accessory, harmful external light enters the optical path of the photographing lens, which may cause ghost and flare problems in the captured image and live view.

  If the light-emitting device is mounted with the optical path of the photographic lens separated from the wall, the problem of intrusion of external light into the camera accessory does not occur, but the camera accessory has a diameter constraint due to maintaining portability. Therefore, such a configuration cannot be easily obtained.

  It is an object of the present invention to implement a notification function for notifying a user of a detailed function support status by installing a light emitting device, maintaining portability, and transmitting light of the light emitting device from the inside to the outside. It is an object of the present invention to provide a camera accessory configured such that external light does not enter the optical path of a photographing lens from a through hole for passing through.

  In order to solve the above-described problems, a camera accessory according to the present invention is a camera accessory that can be mechanically and electrically mounted on a camera body by a mounting mechanism, and is notified to notify a user of a function status. A light emitting unit that emits light, a light emission control unit that controls light emission of the light emitting unit, a printed circuit board on which the light emitting unit is mounted and that electrically connects the light emitting unit and the light emission control unit, and a translucent synthetic resin The prism comprising: an incident surface that covers the light emitting unit and is in close contact with the printed circuit board; an exit surface that covers an optical opening formed in the external member and is in close contact with the external member; and A reflection surface that changes the direction of light emitted from the light emitting portion in a direction parallel to the optical axis is formed, and a portion that covers the light emitting portion of the incident surface and the appearance member of the emission surface form The surface other than the portion covering the optical opening that is characterized in that it is provided with the light shielding member preventing light leakage.

  According to the present invention, a notification function for notifying the user of the detailed function support status is implemented by mounting a light emitting device, and a camera accessory that does not impair portability and does not allow outside light to enter the optical path of the photographing lens is realized. Is possible.

Block diagram showing the configuration of the camera system Flow chart explaining the light emission control of the camera accessory Perspective view of mount conversion adapter Top view showing the cross section of the mount conversion adapter Expanded sectional view of mount conversion adapter Perspective view showing a single reflection member

  Hereinafter, as an embodiment of the camera accessory of the present invention, a mount conversion adapter that is an intermediate accessory interposed between a camera body and an interchangeable lens in a camera system will be described in detail. The following description of the embodiment is an example of the camera accessory according to the present invention. The camera accessory according to the present invention is intended to be attached to and detached from the camera body via a mount or the like. It is not limited to a conversion adapter.

  A configuration of the camera system including the camera body, the interchangeable lens, and the mount conversion adapter according to the present embodiment will be described.

  FIG. 1 is a block diagram showing the configuration of the camera system of this embodiment. In FIG. 1, reference numeral 10 denotes a camera body, 20 denotes an interchangeable lens, and 30 denotes a mount conversion adapter. The camera body 10, the interchangeable lens 20, and the mount conversion adapter 30 together constitute a camera system.

  The camera main body 10 and the mount conversion adapter 30 and the interchangeable lens and the mount conversion adapter 30 are mechanically connected by a mount mechanism having matching specifications. Depending on the intended function of the mount conversion adapter, the specifications of the mount mechanism between the two may be common or different. If the specifications of the mount mechanism match between the two parts, such as between the camera body 10 and the mount conversion adapter 30, both can be mounted. In the mount conversion adapter 30, the camera body 10 side and the interchangeable lens 20 can be mounted. Even if the specifications of the mounting mechanism are different from each other, there is no mechanical problem as long as the camera system can be configured.

  In the camera body 10 shown in FIG. 1, reference numeral 101 denotes a camera CPU, 102 denotes an imaging unit, 103 denotes an image processing unit, 104 denotes a power source unit, and 105 denotes a camera mount unit.

  The camera CPU 101 performs control for acquisition of image data and control of each device in the camera body 10, and performs communication control and drive control with the interchangeable lens 20 and the mount conversion adapter 30 mounted on the camera body 10. .

  The imaging unit 102 includes an image sensor for photoelectrically converting subject light imaged by the photographing lens to acquire image data, an A-D converter for digitizing the acquired image data, and the like. It plays a role of acquiring image data.

  The image processing unit 103 performs gradation processing, noise removal processing, optical aberration correction processing, and the like on the image data acquired by the imaging unit 102.

  The power supply unit 104 supplies power to each device in the camera body 10, and further supplies power to each device of the interchangeable lens 20 and the mount conversion adapter 30 mounted via the camera mount unit 105.

  The camera mount unit 105 has a mount mechanism whose specifications match that of the mount conversion adapter 30. The camera mount unit 105 can mechanically attach the mount conversion adapter 30 to the camera body 10 and has electrical contacts provided in the mount mechanism. Thus, communication with the mount conversion adapter 30 is possible.

  In the interchangeable lens 20 shown in FIG. 1, 201 denotes a lens CPU, 202 denotes a lens optical system, 203 denotes a lens ROM, and 204 denotes a lens mount unit.

  The lens CPU 201 controls each device in the interchangeable lens 20 and performs communication control and drive control with the camera body 10 and the mount conversion adapter 30 mounted on the interchangeable lens 20.

  The lens ROM 203 stores lens data unique to the lens optical system 202 included in the interchangeable lens 20. The lens data includes identification data such as model ID and serial number, optical data such as focal length and aperture value of the lens optical system 202, drive data for driving the interchangeable lens, and the like. Optical correction data for correcting aberration in image processing is included.

  The lens mount unit 204 has a mount mechanism that matches the specifications of the mount conversion adapter 30, enables the interchangeable lens 20 to be mechanically mounted on the mount conversion adapter 30, and provides electrical contacts provided in the mount mechanism. Thus, communication with the mount conversion adapter 30 is possible.

  In the mount conversion adapter 30 shown in FIG. 1, 301 is an adapter CPU, 302 is an adapter ROM, 303 is a light emitting unit, 304 is an adapter camera side mount unit, and 305 is an adapter lens side mount unit.

  The mount conversion adapter 30 of the present embodiment is a camera accessory that relays the camera body 10 and the interchangeable lens 20 that can be mounted on each other with different mount mechanism specifications. The role of the mount conversion adapter 30 is that the interchangeable lens 20 can be mechanically mounted on the camera body 10 regardless of whether the mount mechanism specifications of the camera body 10 and the interchangeable lens 20 are different. Supporting communication compatibility between the main body 10 and the interchangeable lens 20 and adjusting the flange back of the interchangeable lens 20 according to the specifications of the camera main body 10 to be mounted.

  The adapter CPU 301 performs a process involving replacement or conversion of commands and data communicated between the camera CPU 101 and the interchangeable lens 20 in order to ensure compatibility of communication between the camera CPU 101 and the lens CPU 201. In addition, the light emitting unit 303 for notifying the user of the corresponding status of the function of the mount conversion adapter 30 based on data communicated between the camera CPU 101 and the lens CPU 201 is appropriately controlled.

  The adapter ROM 302 stores the same lens data as the lens optical system 202 stored in the lens ROM 203 of the interchangeable lens 20. The lens data stored in the adapter ROM 302 is a lens data that includes a lens ID and can handle more advanced functions than similar lens data stored in the lens ROM 203. That is, in addition to the lens data stored in the lens ROM 203, the lens data stored in the adapter CPU 302 includes, for example, more advanced optical aberration correction data and an image that is a new function of the imaging unit 102 of the camera body 10. Optical aberration correction data compatible with the surface phase difference AF has been expanded.

  Here, the mount conversion adapter 30 can be mounted with various interchangeable lenses that match the specifications of the mount mechanism, and the lens optical system is changed by the mounted interchangeable lens. It is possible to store one or a plurality of lens data in the case where a lens optical system of an interchangeable lens that may possibly occur is assumed.

  It is preferable that the lens data stored in the adapter ROM 302 can be changed later according to the situation. Specific examples of such situations include deleting lens data not used when it is desired to secure the storage capacity of the adapter ROM 302, or adding lens data corresponding to the lens optical system of a newly developed interchangeable lens. is assumed. The lens data stored in the adapter ROM 302 can be changed using an external computer, the camera body, etc. using the electrical contacts of the mount, or using a dedicated connector for changing the lens data. It is.

  By making it possible to store a plurality of expanded lens data in the adapter ROM 302, the interchangeable lens 20 that can be attached to the mount conversion adapter 30 can be adapted to more advanced optical aberration correction and new functions of the camera body 10, respectively. By simply updating the lens data in the adapter ROM 302 of the mount conversion adapter 30 without individually updating the lens data stored in the lens ROM 203 of the interchangeable lens 20, a plurality of interchangeable lenses 20 can be accommodated with new functions at once. It can be.

  The light emitting unit 303 is a light emitting device for notifying the user of the function compatibility of the mount conversion adapter 30. In this embodiment, it is assumed that the light emitting device of the light emitting unit 303 is specifically an LED. The LED is packaged with an LED that emits three primary colors of light and an IC that controls the light emission, and can emit light of various colors in a space-saving manner. In the present embodiment, the user is notified of the corresponding status of the function of the mount conversion adapter 30 using a plurality of light emission states of the LEDs.

  Next, the light emission control of the light emitting unit 303 by the adapter CPU 301 will be described with reference to FIG.

  In the camera system of this embodiment, when the power of the camera body 10 is turned on, the camera CPU 101 of the camera body 10, the lens CPU 201 of the interchangeable lens 20, and the adapter CPU 301 of the mount conversion adapter 30 are supplied from the power supply unit 104 of the camera body. Supply of power of an appropriate voltage to each CPU is started. These CPUs are activated by receiving power and perform the following initial communication.

  First, in step 1, the adapter CPU 301 instructs the camera CPU 101 to wait for communication. This is because the adapter CPU 301 waits for communication between the adapter CPU 301 and the camera CPU 101 until the type of the interchangeable lens 20 is determined in the initial communication and the light emission control of the light emitting unit 303 is completed.

  Next, in step 2, the adapter CPU 301 inquires of the lens CPU 201 whether lens data for the lens optical system 202 of the attached interchangeable lens 20 can be stored in the adapter ROM 302 of the mount conversion adapter 30. A command (corresponding command) and a command (lens ID command) for inquiring the lens ID stored in the lens ROM 203 of the interchangeable lens 20 are issued.

  The corresponding command is a command for inquiring the lens CPU 201 whether or not the lens data for the lens optical system 202 of the interchangeable lens 20 attached to the mount conversion adapter 30 can be stored in the adapter ROM 302. When issuing the corresponding command, it does not matter whether lens data for the lens optical system 202 of the interchangeable lens 20 is actually stored in the adapter ROM 302.

  The lens data stored in the adapter ROM 302 is created based on the lens design data of the lens optical system 202, and must be described according to a predetermined format, and simply conforms to the specifications of the mount mechanism. Therefore, even if an interchangeable lens is mechanically mountable, the lens data of the interchangeable lens cannot always be stored. For example, even if the interchangeable lens 20 can be mechanically attached to the mount conversion adapter 30, the manufacturer of the mount conversion adapter 30 cannot create lens data based on the lens design data. In the case of an interchangeable lens manufactured by another company having a lens optical system, it is fundamentally impossible to store lens data of these interchangeable lenses in the adapter ROM 302 of the mount conversion adapter 30.

  Next, in step 3, the lens CPU 201 responds to the correspondence command and the lens ID command from the adapter CPU 301 to the adapter CPU 301 to answer the status of the mount conversion adapter 30 and the lens ID stored in the lens ROM 203. Send.

  Next, in step 4, the adapter CPU 301 receives the corresponding status and the lens ID for the mount conversion adapter 30 transmitted from the lens CPU 201, and performs light emission control of the light emitting unit 303 based on these. That is, when the response status to the mount conversion adapter 30 is OK, the light emission control for turning on the light emitting unit 303 is performed, and when it is NG, the light emission control for not turning on the light emitting unit 303 is performed. Further, in the light emission control for turning on the light emitting unit 303, light emission control for switching the light emission color according to the lens ID is performed.

  In this embodiment, when the response status to the mount conversion adapter 30 is OK, the light emission control for turning on the light emitting unit 303 is performed, and the light emission control for switching the light emission color according to the lens ID is performed. That is, the adapter CPU 301 refers to the adapter ROM 302 that stores one or a plurality of lens data using the lens ID received from the lens CPU 201 as a key when performing light emission control for turning on the light emitting unit 303, and receives it from the lens CPU 201. Whether or not the same lens ID as the selected lens ID exists is searched. If it exists, the light emitting unit 303 emits green light, and if it does not exist, the light emitting unit 303 emits orange light.

  By switching the color of the light emitting unit 303 of the mount conversion adapter 30 to emit light as described above, lens data corresponding to the lens optical system 202 of the mounted interchangeable lens 20 is stored in the adapter ROM 302 for the user. In addition, it is possible to visually notify that the mount conversion adapter 30 is compatible with storage of lens data, and visually prompt the user to store the lens data in the adapter ROM 302.

  Next, in step 5, the adapter CPU 301 ends the light emission control of the light emitting unit 303 after a predetermined time has elapsed, cancels the communication standby instruction for the camera CPU 101 performed in step 1, and communicates with the camera CPU 101. To start. Thus, the light emission control of the light emitting unit 303 by the adapter CPU 301 is completed.

  Next, the configuration of the mount conversion adapter 30 according to the present embodiment will be described with reference to FIGS.

  FIG. 3 is a view showing the appearance of the mount conversion adapter 30. Reference numeral 306 denotes an external member, 306a denotes a through hole formed in the external member 306, 304 denotes an adapter camera side mount portion, and 305 denotes an adapter lens side mount portion.

  The through hole 306a is an opening formed in the appearance member 306 so that light for notifying the user passes from the light emitting unit 303 arranged in the internal mechanism of the mount conversion adapter 30 to the outside.

  The adapter camera side mount unit 304 and the adapter lens side mount unit 305 are mechanisms for mechanically and electrically connecting to the mount unit 100 of the camera body 10 and the mount unit 100 of the interchangeable lens 20 by the mount mechanism, respectively.

  In FIG. 3, the alternate long and short dash line indicates the optical axis of the mount conversion adapter 30. The optical axis of the mount conversion adapter 30 coincides with the optical axis of the camera body 10 and also coincides with the optical axis of the interchangeable lens 20. Specifically, the optical axis of the camera body 10 is an axis that passes vertically through the center of the image sensor constituting the imaging unit 102 of the camera body 10, and the optical axis of the interchangeable lens 20 is specifically the light of the lens optical system 202 of the interchangeable lens 20. Is the axis.

  FIG. 5 is a cross-sectional view taken along a plane parallel to the optical axis and including a cross-sectional line AA ′ passing through the optical axis of the mount conversion adapter 30 and the through hole 306a in the plan view of the mount conversion adapter 30 of FIG. . In the cross-sectional view of FIG. 5, the periphery of the light emitting unit 303 is further enlarged.

  In the cross-sectional view of FIG. 5, reference numeral 303 denotes a light emitting unit made of an LED, 306 denotes an external member, 306 a denotes a through hole formed in the external member 306, 307 denotes a diffusion axis disposed so as to make the through hole 306 a watertight, 308. Is a printed circuit board, 309 is a reflecting member, and 310 is a light shielding member.

  The through hole 306 a is formed in the external member 306 and is an optical opening of the external member 306 for allowing light from the light emitting unit 303 arranged in the internal mechanism of the mount conversion adapter 30 to pass outside. While the through hole 306a has such a role, there is also a problem that it causes a harmful effect that external ambient light passes through the internal mechanism of the mount conversion adapter 30. A camera accessory that directs subject light to the image sensor of the camera body, such as a mount conversion adapter, causes ghost and flare in the captured image when harmful light that is not subject light enters from the outside. There is a risk that you will not be able to take beautiful pictures.

  The diffusion shaft 307 is disposed so as to close the through hole 306a in a watertight manner. The diffusion shaft 307 also has a role of maintaining the dustproof and drip-proof performance of the mount conversion adapter 30 in addition to the role of diffusing the light from the light emitting unit 303 visually and efficiently. In the through hole 306a, there may be a problem that dust and water droplets enter the internal mechanism from the outside as well as the problem that ambient light from the outside enters the internal mechanism. Therefore, in this embodiment, the diffusion hole 307 is used to close the through hole 306a in a watertight manner. The diffusion shaft 307 may be formed integrally with the appearance member 306 and the reflection member 309.

  The light emitting unit 303 is mounted on the printed circuit board 308 and is electrically connected to the adapter CPU via the pattern wiring of the printed circuit board 308 and the like. The light emitting unit 303 is controlled to emit light by the adapter CPU through the pattern wiring of the printed circuit board 308 and the like.

  The reflection member 309 is disposed so as to be in close contact with the inner side surface of the appearance member 306, and is disposed so as to be in close contact with the printed board 308.

  FIG. 6 is a perspective view of a single reflection member 309 viewed from the side and bottom. In FIG. 6, 309a indicates an incident surface, 309b indicates an exit surface, and 309c indicates a reflective surface.

  The reflection member 309 is made of a transparent resin material, such as polycarbonate resin or acrylic. The material of the reflection member 309 is not limited to these as long as it is a translucent synthetic resin that satisfies the function of a light guide that can guide light from the light emitting portion 303 to the through hole 306a of the appearance member 306.

  Each part of the reflecting member 309 shown in FIG. 6 will be described. The incident surface 309a is formed so as to cover the light emitting unit 303 mounted on the printed circuit board 308, so that light does not leak from the upper and side portions with respect to the plane on which the light emitting unit 303 of the printed circuit board 308 is mounted. Is formed. Similarly, the injection surface 309b is formed on the inner side surface of the appearance member 306 so as to cover the through hole 306a, and is formed in accordance with the shape of the diffusion shaft 307 in this embodiment.

  The reflecting surface 309c is formed at a predetermined angle with respect to the incident surface 309a and the emitting surface 309b so as to efficiently guide the light from the light emitting unit 303 that has entered the reflecting member 309 from the incident surface 309a to the emitting surface 309b. .

  The light emitted from the light emitting unit 303 is reflected inside the reflecting member 309 and emitted from the through hole 306a of the appearance member 306 to the outside of the mount conversion adapter as in the example of the optical path shown in FIG. In this embodiment, most of the light emitted from the light emitting unit 303 is emitted toward the upper part of the light emitting unit, is incident on the reflecting member 309 from the incident surface 309a, and is reflected or reflected by the reflecting surface 309c inside the reflecting member 309. The light is totally reflected and emitted from the exit surface 309b to the outside of the mount conversion adapter. In order to more efficiently guide the light emitted from the light emitting unit 303 to the through hole 306a of the appearance member 306, a light emitting member with higher directivity such as a bullet-type LED is used for the light emitting unit 303. Can be considered.

  The light emitted from the light emitting unit 303 includes light other than light that is incident from the incident surface 309a of the reflecting member 309 and is emitted from the exit surface 309b to the outside of the mount conversion adapter. However, as illustrated in FIG. A light shielding member 310 for preventing light leakage is provided in addition to a portion that covers the light emitting portion 303 of the incident surface 309a of the member 309 and a through hole 306a formed in the appearance member 306 of the emission surface 309c. Unnecessary light does not enter the mount conversion adapter.

  Further, since the light blocking member 310 for preventing light leakage is arranged on the reflection member 309, even if external light enters the mount conversion adapter from the through hole 306a of the appearance member 306, the external light from the reflection member 309 to the inside. Will not invade.

  As the light shielding member 310 for preventing light leakage provided on the surfaces other than the incident surface 309a and the exit surface 309b of the reflecting member 309, vapor deposition with aluminum or chromium, adhesion of metal foil such as aluminum foil or sheet metal, light shielding film or resin Etc., or painting or cover is assumed. In particular, it is preferable that the light shielding member 310 is provided on the reflective surface 309c after performing mirror processing toward the inside of the reflective member 309 in order to efficiently reflect the light from the light emitting unit 303.

  In this embodiment, the through hole 306a of the external member 306 is formed so as to completely penetrate the external member if it is an optical opening through which light from the light emitting portion 303 passes. However, for example, the appearance member may be formed of a plastic member formed by two-color molding, and only the opening through which light passes may be formed of a transparent material.

  As described above, according to the present invention, in the camera accessory, even if the position of the printed board on which the light emitting unit is mounted and the optical opening of the appearance member are separated, the notification light from the light emitting unit is externally transmitted. It becomes possible to lead to. In addition, even if external light enters the camera accessory from the outside through the optical opening of the external appearance member, it is possible to prevent external light from entering prior to the reflecting member. It is possible to prevent adverse effects such as. In addition, since it is possible to guide the notification light from the light emitting unit to the outside while the light emitting unit is directly mounted on the printed circuit board, the flexible printed circuit board for arranging the light emitting unit away from the printed circuit board on which the adapter CPU is mounted Etc. is unnecessary, and the cost of increasing the number of parts can be suppressed, and adverse effects due to electrostatic noise received from wiring such as a flexible substrate can be eliminated.

  According to the present invention, it is possible to provide a camera accessory in which a light emitting device such as an LED is mounted on a camera accessory and a notification function for notifying a user of a detailed function support status is provided. The ambient light from the outside is prevented from entering the internal mechanism of the camera accessory through an optical opening formed in the exterior member of the camera accessory in order to pass the light from the light emitting device to the outside, and the captured image is adversely affected. It can be set as the camera accessory which prevented that.

10 Camera body 101 Camera CPU
102 Imaging unit 103 Image processing unit 104 Power supply unit 105 Camera mount unit 20 Interchangeable lens 201 Lens CPU
202 Lens optical system 203 Lens ROM
204 Lens mount unit 30 Mount conversion adapter 301 Adapter CPU
302 Adapter ROM
303 Light Emitting Unit 304 Adapter Camera Side Mount Unit 305 Adapter Lens Side Mount Unit 306 Appearance Member 306a Through Hole 307 Diffusion Shaft 308 Printed Circuit Board 309 Reflective Member 310 Light Shielding Member

Claims (2)

A camera accessory that can be mechanically and electrically attached to the camera body by a mounting mechanism,
A light-emitting unit that emits notification light to notify the user of the corresponding status of the function, a light-emission control unit that controls light emission of the light-emitting unit, and the light-emitting unit that is mounted with the light-emitting unit is electrically connected It has a printed circuit board to be connected and a prism made of translucent synthetic resin,
The prism includes an incident surface that covers the light emitting unit and is in close contact with the printed board, an exit surface that covers an optical opening formed in the external member and is in close contact with the external member, and light emitted from the light emitting unit. And a reflecting surface that changes the direction of light emitted in a direction parallel to the optical axis,
A light blocking member for preventing light leakage is provided on a surface of the incident surface other than a portion covering the light emitting portion and a portion of the exit surface covering the optical opening formed in the appearance member. Camera accessories. 2. The camera accessory according to claim 1, wherein a diffusion axis for transmitting notification light from the light emitting unit to the outside is configured to watertightly seal an optical opening of the appearance member.

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