JPH09211566A - Camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control an outside flash from a camera side, without using a cable. SOLUTION: The outside flash 50 is attached to a housing 20 housing a camera. The housing 20 is provided with a light guide prism whose incident surface faces a flash incorporated in the camera and a diffusion dome 34 which faces the light-emitting surface of the light guide prism in one surface and is exposed outside in the other surface. The outside flash 50 is provided with a light receiving part, 54 facing the diffusion dome 34. When the releasing operation button 36 of the housing 20 is depressed, the flash incorporated in the camera emits light When the flash light reaches the light receiving part, 54 of the outside flash 50 from the diffusion dome 34, the outside flash 50 associatively emits the light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system, and more particularly to a camera system capable of taking an image using an external flash.

[0002]

2. Description of the Related Art Conventionally, there is a wireless flash system in which light emission from a built-in flash is used as a control signal for an external flash in photographing on the ground. In this system, the light emitted as a control signal from the built-in flash is once applied to the subject, and the reflected light is received by the external flash to start and stop the emission of the external flash. here,
The irradiation angle of the built-in flash is set so as to illuminate the range of the subject, and the external flash also has the directivity of the light receiving portion set so as to receive light from the direction of the subject. Of the emitted light of the built-in flash, the component used for actual control is infrared light.

However, the absorption of infrared light used for this control is very large in water, and the infrared light used for control is greatly attenuated while it hits and reflects the object, and it does not reach the light receiving portion of the external flash. become unable.

Therefore, even if the camera having a built-in flash and the external flash are respectively put in an underwater housing so that they can be used underwater, the wireless control of the above method is used only in an extremely narrow range or under limited conditions. Can not. Therefore, when used underwater, generally, a camera and an external flash are connected by a cable so that a control signal can be transmitted. But,
If there is a cable that transmits a control signal, it is troublesome to manage the cable. Also, if there is a cable, water may get into the connection part of the cable. In addition, the cable may become entangled with the equipment for diving worn by the diver, which is dangerous.

[0005]

Therefore, a technical problem to be solved by the present invention is to provide a camera system which directly sends a control signal from a built-in flash of a camera to a light receiving portion of an external flash without using reflection from a subject. Is to provide.

[0006]

In order to solve the above technical problems, the present invention provides a camera system having the following configuration.

The camera system comprises a camera having a built-in flash, and an external flash which emits light in synchronization with the photographing operation of the camera. A built-in flash light guide means for guiding the flash light from the built-in flash of the camera at least outside the photographing area of the camera and in the direction of the external flash is provided. The external flash has a light receiving unit that directly receives at least a part of the flash light from the built-in flash of the camera.

In the above structure, the built-in flash of the camera emits light at the time of photographing. The built-in flash light guide means changes the irradiation direction of at least a part of the flash light of the built-in flash of the camera, which is normally emitted toward the shooting area, and receives the light from the external flash arranged outside the shooting area of the camera. Turn to the section. That is, at least part of the flash light of the camera's built-in flash
The light is emitted toward the external flash. The built-in flash light guiding means may be provided in the camera, the built-in flash of the camera, or the external flash. Alternatively, it may be independently arranged in a position that is not fixed to the camera or the external flash. In the external flash, a part of the flash light from the built-in flash is directly received by the light receiving section, and the light emitting section emits light. So the external flash is
It emits light when the flash light from the built-in flash of the camera is received as a control signal. The light receiving unit of the external flash directly receives the flash light from the built-in flash, not the reflected light reflected by the flash light of the built-in flash of the camera when it hits the subject.

Therefore, this camera system can directly send the flash light as a control signal from the built-in flash of the camera to the light receiving portion of the external flash without using the reflection from the subject. With this camera system,
The flash light used as the control signal is directly transmitted to the external flash without passing through the subject, and the transmission distance becomes short, so that it can be sufficiently used even in water where the light is greatly attenuated. This camera system can be used for photographing on the ground, but is particularly suitable for use underwater.

In the above structure, it is sufficient that at least a part of the flash light of the built-in flash is emitted substantially toward the external flash, and even if another part of the flash light of the built-in flash is emitted within the photographing area of the camera. It doesn't matter. The external flash, whether fixed to the camera itself or free to move with respect to the camera,
Further, it may be arranged at a predetermined position with respect to the camera. Since the external flash itself is preferably not photographed, the external flash is typically located outside of the camera's field of view.

Preferably, the camera includes an operation mode selecting means for selecting an operation mode of the external flash.
Control signal generating means for generating a control signal corresponding to the operation mode selected by the operation mode selecting means,
And a light emission control means for causing the built-in flash of the camera to emit light based on the control signal generated by the control signal generation means. The external flash includes control signal decoding means for decoding the control signal generated by the control signal generation means of the camera based on the flash light from the built-in flash of the camera received by the light receiving unit, Operation control means for controlling the operation of the external flash based on the control signal decoded by the control signal decoding means.

In the above structure, the operation mode is selected by the operation mode selection means of the camera. The operation mode includes, for example, a mode in which the external flash emits full light, a mode in which the external flash emits light in conjunction with the TTL flash light control of the camera, and a mode in which the irradiation angle of the external flash interlocks with the focal length of the camera lens. is there. A control signal corresponding to the operation mode is generated by the control signal generation means. The control signal is for the external flash, and includes an external flash emission mode (full emission, TTL linked emission), emission start, external flash emission stop, light amount level, irradiation angle, and the like. Then, the light emission control means causes the built-in flash of the camera to emit light in a light emission pattern based on the control signal. The flash light of the built-in flash transmits a control signal to the external flash according to a light emission pattern such as the number of times of light emission, the light emission time, the light emission stop time (including one light emission and a plurality of pulsed light emissions), and the intensity of light emission. In the external flash, the light receiving section receives the flash light, and the control signal decoding means decodes the control signal from the light emission pattern of the flash light. Then, the operation control means operates the external flash based on the decoded control signal. For example, light emission is started and stopped at a predetermined intensity, or an irradiation angle is set.

Therefore, not only the simple control of causing the external flash to simply emit light in synchronization with the photographing by the camera, but also the control of the external flash having various complicated contents can be performed.

In the above structure, the built-in flash light guide means is not limited to a light guide means such as a reflection mirror or a light guide (for example, a prism or an optical fiber) arranged to face the light emitting portion of the built-in flash of the camera. It also includes a mechanism for directing the light emitting unit itself of the built-in flash of the camera in a predetermined direction. Further, the built-in flash light guide means may be built in the camera or may be a member separate from the camera, and further, may be composed of a part built in the camera and a part which is a separate member. Good.

Preferably, the built-in flash light guide means is provided so as to face a light emitting portion of the built-in flash of the camera, and diffuses or diffuses a diffuse reflection member or diffuse transmission member for diffusing the flash light from the built-in flash of the camera. A member is further provided. The diffuse reflection member or the diffusion transmission member is provided directly or indirectly to face the light emitting portion of the built-in flash of the camera. That is, it is not limited to the case where it is provided directly opposite to the light emitting unit, but includes the case where it is indirectly opposite, for example, via a reflection mirror in the middle of the path through which the flash light is guided.

In the above structure, the flash light of the built-in flash of the directional camera is diffused by the diffuse reflection member or the diffusion transmission member. Therefore, the range in which the flash light from the built-in flash of the camera is irradiated becomes wide, and the area where the external flash can receive the flash from the built-in flash of the camera becomes wide. In addition, the intensity of the flash light within the light emission range is approximately equalized due to diffusion, and there is almost no variation in the light receiving sensitivity of the external flash. Therefore, the range in which the external flash can be arranged is further widened.

Preferably, the built-in flash light guide means has a light-receiving portion whose light-receiving portion is arranged to face the light-emitting portion of the built-in flash of the camera, and a light-emitting portion of the light-guiding prism which is close to and faces the light-emitting prism. And a diffusion / transmission member provided as above.

In the above structure, the light guide prism can guide the flash light of the built-in flash of the camera, which is normally emitted toward the photographing area, to the outside of the photographing area. The diffuse transmission member diffuses the flash light of the built-in flash of the camera. Therefore, the number of parts is small and the configuration is simple.

Preferably, the built-in flash light guide means is provided in an underwater camera housing that hermetically houses the camera therein.

In the above structure, the camera is hermetically housed in the underwater housing. The flash light of the built-in flash of the camera is guided to the light receiving portion of the external flash by the built-in flash light guiding means of the underwater housing. Therefore, it is possible to take pictures in water using a normal camera with a built-in flash.

The present invention also provides a camera system component, that is, a camera, an external flash, and a built-in flash light guide device, and an underwater camera housing for hermetically housing the camera and the external flash so that they can be used during underwater photography. And an underwater flash housing.

That is, the camera has a built-in flash, and the flash light from this built-in flash controls the operation of the external flash. The built-in flash of the camera has a light emitting portion that emits at least a part of the flash light outside the photographing area of the camera and in the direction of the external flash.

The external flash has a light receiving section for receiving flash light from the built-in flash of the camera, and a light emitting section that operates when the light receiving section receives the flash light from the built-in flash of the camera. The light receiving unit directly receives at least a part of the flash light from the built-in flash of the camera.

The underwater flash housing has a light receiving portion for receiving flash light from a built-in flash of the camera,
An external flash having a light emitting section that operates when the light receiving section receives the flash light from the built-in flash of the camera is hermetically housed inside. A light guide that directly receives at least a part of the flash light from the built-in flash of the camera and faces the light receiving portion of the external flash, and guides the received flash light to the light receiving portion of the external flash. It has a member.

In the above structure, the flash light from the built-in flash of the camera reaches the light receiving portion of the external flash through the light guide member of the underwater flash housing.
The external flash can be used for underwater photography even if it is a normal external flash having a light receiving unit that receives reflected light from a subject. That is, since the light receiving unit of the external flash faces the photographing area together with the light emitting unit and does not point in the direction of the built-in flash of the camera, it cannot directly receive the flash light from the built-in flash of the camera. However, the flash light from the built-in flash of the camera is transmitted to the light receiving portion of the external flash by the light guide member of the underwater housing. Therefore, it is possible to perform underwater photography using a normal external flash.

Preferably, the light guide member has a light receiving surface protruding to the outside.

In the above structure, light from a wide range enters the light receiving surface of the light guide member protruding to the outside and reaches the light receiving portion of the external flash. Therefore, the directional range of the light receiving portion of the external flash housed in the underwater flash housing is widened, and the external flash can be arranged in a wider range in a more free posture.

The built-in flash light guide device is fixed so as to face the light emitting portion of the built-in flash of a camera having the built-in flash, and at least the flash light from the light emitting portion of the built-in flash is at least fixed. It is guided in a predetermined direction outside the photographing area of the camera.

In the above structure, the built-in flash light guiding means directs the flash light of the built-in flash of the camera to the direction of the external flash so that the flash light of the built-in flash of the camera is controlled by the external flash without passing through the subject. The light can be directly received.

Preferably, a diffuse reflection member or a diffusion transmission member is further provided facing the light emitting portion of the built-in flash of the camera.

In the above structure, since the built-in flash light guide means diffuses the flash light of the built-in flash of the camera, the range of the flash light of the built-in flash reaches is wide. Therefore, the external flash can be arranged in a wider range.

The underwater camera housing includes the built-in flash light guide device, and the camera having the built-in flash is hermetically housed inside.

In the above structure, even an ordinary camera having a built-in flash can be housed in the underwater camera housing in an airtight manner by the built-in flash light guide device.
It can be photographed in water using an external flash.

Preferably, the underwater camera housing is close to an outer wall member for hermetically housing a camera having a built-in flash therein, and a light emitting portion of the built-in flash of the camera hermetically housed inside the outer wall member. A light guide prism in which light receiving portions are arranged to face each other, and one surface of the light guide portion of the light guide prism is provided to face the light emitting prism, and the other surface of the diffuse transmission member projects outward from the outer wall member. .

In the above structure, the flash light from the built-in flash of the camera is guided by the light guide prism, passes through the diffuse transmission member protruding to the outside, and is diffused to a wide range outside. Therefore, with a simple configuration, the range where the light from the built-in flash reaches the external flash is widened, and the degree of freedom in arranging the external flash is increased.

[0036]

DETAILED DESCRIPTION OF THE INVENTION The flash photographing system 1 according to the embodiment of the present invention shown in FIGS. 1 to 4 will be described in detail below.

The flash photographing system 1 is an underwater photographing system. Basically, as shown in the overall perspective view of FIG. 1, a camera 10 (not shown) having a built-in flash 12 (not shown) and a camera 10 (not shown) are provided. An underwater housing 20 that seals the camera 10 and an external flash 50 that operates in conjunction with the flash light of the built-in flash 12 of the camera 10 are provided.

As shown in the perspective view of FIG. 4, the camera 10 is provided with a release button 16 and a built-in flash 12 on the upper surface 10b of the camera 10. The light emitting portion 14 of the built-in flash 12 is adapted to pop out at the time of use, as shown in the sectional view of the main part of FIG.

The underwater housing 20 includes the covers 30 and 3.
The divided surfaces of 1 and 40 are airtightly connected to each other to form a waterproof structure that prevents liquid from entering the inside. Underwater housing 2
0 indicates a front cover 30 on the front side, that is, on the taking lens 18 side of the camera 10, as shown in the right side views of FIGS. 1 and 3.
The rear cover 40 is largely divided into two parts, which are joined and fixed by the connecting fittings 46a and 46b.

The front cover 30 has a replaceable lens cover 31 fixed to its front portion, and the taking lens 18 attached to the camera 10, that is, the interchangeable lens 18 is attached.
Even if the length of the is changed, it can be dealt with. The front surface 31a of the lens cover 31 of the front cover 30 is transparent and faces the lens surface 18a of the taking lens 18. As shown in FIG. 1, a release operation button 36 is provided on the front surface 30a of the front cover 30 so that the release button 16 of the camera 10 in the underwater housing 20 can be pressed from the outside of the underwater housing 20. Has become.

As shown in FIG. 2, a camera mounting base plate 38 having a mounting screw member 39 is fixed to the lower wall 30c of the front cover 30. Camera mount base 38
Project to the rear cover 40 side. The camera 10 can be fixed to the camera mounting base plate 38 by mounting the camera 10 on the camera mounting base plate 38 and screwing the mounting screw member 39 to the female screw for fixing the tripod on the bottom surface 10c of the camera 10. Has become.

As shown in FIG. 2, on the upper portion of the front cover 30, a light guide prism 32 fixed inside the upper side of the front cover 30 and a diffusion dome 34 airtightly fixed to an upper wall 30b of the front cover 30 are provided. Have and.

The light guiding prism 32 is a reflecting prism having a substantially L-shape in which a columnar first portion 32a having a rectangular cross section and a second portion 32b are joined at a right angle. The first portion 32a extends horizontally in the front-rear direction above the camera 10 fixed to the camera mounting base plate 38, and an incident surface 32x extending in the vertical direction is provided at one end, that is, the rear end of the first portion 32a. Has been formed. The incident surface 32x faces the light emitting unit 14 of the built-in flash 12 of the camera 10 fixed to the camera mounting base plate 38.
The other end, that is, the front end of the first portion 32a is integrally connected to one end, that is, the lower end of the second portion 32b extending vertically upward. A reflecting surface 32y that is inclined by approximately 45 degrees with respect to the first portion 32a and the second portion 32b is formed at the joint portion between the first portion 32a and the second portion 32b. An emission surface 32z extending in the horizontal direction is formed at the other end, that is, the upper end of the second portion 32b.

The diffusion dome 34 is a hemispherical hemispherical shell 34.
It is a diffuse transmission member having a. In the diffusion dome 34, the hemispherical shell 34a is exposed to the outside 8 in a substantially upward direction.
It is airtightly fixed to the upper wall 30b of the front cover 30. The emission surface 32z of the second portion 32b of the light guide prism 32 faces the inside 34x of the hemispherical shell portion 34a of the diffusion dome 34.

The external flash 50 is attached to one side of the underwater housing 20 by a connecting bar 22 as shown in FIG.
It is located diagonally above 0. The external flash 50 has a waterproof structure, and has a light receiving portion 54 at the lower front portion thereof and a light emitting portion 52 at the upper front portion thereof.
The light receiving portion 54 of the external flash 50 is the underwater housing 2
It is attached to the underwater housing 20 so that the zero diffusion dome 34 can be seen through without obstruction.

Next, the configuration of the flash photographing system 1 as well as its operation will be described in more detail.

The camera 10 is fixed to the camera mounting base plate 38 of the front cover 30 of the underwater housing 20, and the front cover 30 and the rear cover 40 are airtightly coupled by the connecting metal fittings 46a and 46b, whereby the underwater housing 20. It is sealed and stored inside. During flash photography, the light emitting portion 14 of the built-in flash 12 of the camera 10 pops out and faces the incident surface 32x of the first portion 32a of the light guiding prism 32 in the underwater housing 20. When the release operation button 36 of the underwater housing 20 is operated, the release button 16 of the camera 10 is pressed and the built-in flash 12 of the camera 10 emits light. The flash light of the built-in flash 12 is guided to the diffusion dome 34 of the underwater housing 20 by the light guide prism 32 of the underwater housing 20.
After passing through the hemispherical shell portion 34a, the light travels to the outside 8 of the underwater housing 20. At this time, the flash light is diffused and spreads. A part of the flash light that has traveled to the outside reaches the light receiving unit 54 of the external flash 50. In the external flash 50, the light emitting unit 52 emits light based on the light received by the light receiving unit 54. The light emission of the built-in flash 12 is determined in advance according to the operation of the external flash 50, such as the light emission pattern, for example, the number of times light emission and stop are repeated, each time of light emission and stop, the intensity of light emission, and the like.

For example, when shooting with the full flash of the external flash 50, as described above, the camera 10
The external flash 50 is made to fully emit light by using the light emission of the built-in flash 12 of 1.

In the case of photographing by the TTL control, the external flash 50 is made to emit light in synchronization with the light emission of the built-in flash 12 of the camera 10, and when the camera 10 detects a sufficient light amount of the object through the taking lens 18,
The built-in flash 12 emits light again, and the external flash 5
The emission of 0 is stopped. Alternatively, while the internal flash 12 of the camera 10 continues to emit light while the external flash 50 emits light, the external flash 50 may stop emitting light in conjunction with the stop of emission of the internal flash 12.

Various data can be transmitted from the built-in flash 12 to the external flash 50 by flash light emission. For example, external flash 5
If 0 can change the irradiation angle, the camera 1
The irradiation angle data of the external flash 50 corresponding to the focal length of the photographing lens 18 of 0 is transmitted to the external flash 50 by the light emission of the built-in flash 12 of the camera 10, and the irradiation angle of the external flash 50 is set to the focal length of the photographing lens 18. Interlock.

The above configuration is particularly suitable for underwater photography in which the light attenuation is larger than that in the air and only the built-in flash 12 of the camera 10 is likely to have insufficient light quantity. That is, according to the above configuration, it is possible to easily take an image using the external flash 50 having a large light emission amount, and since it is not necessary to connect the external flash 50 and the camera 10 with a cable, a troublesome cable is required. The handling of is unnecessary. This is preferable from the viewpoint of safety in water.

In the above structure, the diffusion dome 34 of the underwater housing 20 spreads the flash light from the built-in flash 12 of the camera 10 when it is emitted to the outside 8. Therefore, the area where the flash light from the built-in flash 12 of the camera 10 reaches. Becomes wider. Therefore, the area in which the external flash 50 can be arranged becomes wider. However, if the relative position between the camera 10 and the external flash 50 is fixed, it is sufficient if the flash light of the built-in flash 12 can be guided to the light receiving portion 54 of the external flash 50. May be.

The present invention is not limited to the above embodiment, but can be implemented in various other modes. For example, in place of the waterproof external flash 50, a commonly used normal external flash can be housed in a waterproof underwater flash housing for use. In this case, since the light receiving unit of the normal external flash is directed to the photographing area together with the light emitting unit, the diffusing member is provided facing the light receiving unit of the external flash housed in the underwater housing, and the external member is passed through the diffusing member. External light is guided to the light receiving portion of the flash, and light from a wide area other than the photographing area is also guided to the light receiving portion of the external flash. Further, not only underwater photography but also for general photography, the present invention can be applied and the external flash 50 can be controlled by the flash light of the built-in flash 12 of the camera 10.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a flash photographing system of the present invention.

FIG. 2 is a cross-sectional view of essential parts of the underwater housing of FIG.

3 is a right side view of the underwater housing of FIG. 1. FIG.

4 is a perspective view of a camera housed in the underwater housing of FIG. 1. FIG.

[Explanation of symbols]

 1 Flash photography system 8 External 10 Camera 10a Front face 10b Top face 10c Bottom face 12 Built-in flash 14 Light emitting part 16 Release button 18 Photographing lens 18a Lens front face 20 Underwater housing (underwater camera housing) 22 Connecting bar 30 Front cover 30a Front face 30b Top wall 30c Bottom Wall 31 Lens cover 31a Front surface 32 Light guide prism (flash light guiding means) 32a First part 32b Second part 32x Incident surface (light receiving part) 32y Reflecting surface 32z Emitting surface (light emitting part) 34 Diffusion dome (flash light guiding means) 34a hemispherical shell 34x internal 36 release operation button 38 camera mounting base plate 39 mounting screw member 40 rear cover 46a, 46b connecting metal fitting 50 external flash 52 light emitting unit 54 light receiving unit

Claims (13)

[Claims] 1. A camera having a built-in flash (12).
A camera system (1) including (10) and an external flash (50) that emits light in synchronization with a shooting operation of the camera (10)
In the built-in flash light guiding means, the flash light from the built-in flash (12) of the camera (10) is guided at least outside the photographing area of the camera (10) and substantially in the direction of the external flash (50). (32, 34), the external flash (50) has a light receiving section (54) for directly receiving at least a part of the flash light from the built-in flash (12) of the camera (12). Characteristic camera system. 2. The camera (1) is provided with the external flash.
(50) operation mode selecting means for selecting the operation mode,
Control signal generation means for generating a control signal corresponding to the operation mode selected by the operation mode selection means, and the built-in camera (10) based on the control signal generated by the control signal generation means The external flash (50) has a light emission control means for causing the flash (12) to emit light, and the external flash (50) converts the flash light from the built-in flash (12) of the camera (10) received by the light receiving unit (54). Based on the control signal decoding means for decoding the control signal generated by the control signal generating means of the camera (10), and the external flash based on the control signal decoded by the control signal decoding means.
The camera system according to claim 1, further comprising an operation control means for controlling the operation of (50). 3. The built-in flash light guide means (32, 3)
4) is a light emitting part of the built-in flash (12) of the camera (10)
A diffuse reflection member or a diffusion transmission member (34) provided opposite to (14) for diffusing the flash light from the built-in flash (12) of the camera (10) is further provided. Item 1. The camera system according to Item 1. 4. The built-in flash light guide means (32, 3)
4) is a light guide prism (32) in which a light receiving part (32x) is arranged to face the light emitting part (14) of the built-in flash (12) of the camera (10), and the light guide prism (32). 4. The camera system according to claim 3, further comprising a diffuse transmission member (34) provided close to and opposite to the light emitting section (32z) of FIG. 5. The built-in flash light guide means (32, 3)
The camera system according to claim 1, 2, 3 or 4, wherein 4) is provided in an underwater camera housing (20) that hermetically houses the camera (10) therein. 6. A camera (10) having a built-in flash (12) for controlling the operation of an external flash (50) by flash light from the built-in flash (12), the built-in flash of the camera (10). The camera (12) is characterized in that at least a part of the flash light is outside the photographing area of the camera (10) and has a light emitting portion which emits light in the direction of the external flash (50). 7. A light receiving section (54) for receiving flash light from a built-in flash (12) of the camera (10), and the light receiving section.
(54) is the built-in flash (12) of the camera (10)
In the external flash (50) having a light emitting section (52) which operates when receiving the flash light from, the light receiving section (54) is at least from the built-in flash (12) of the camera (12). An external flash, which directly receives a part of the flash light. 8. A light receiving unit for receiving flash light from a built-in flash (12) of the camera (10), and the light receiving unit receiving the flash light from the built-in flash (12) of the camera (10). An underwater flash housing for airtightly storing an external flash having a light emitting section that operates at a time, the internal flash (12) of the camera (12) facing the light receiving section of the external flash. An underwater flash housing, comprising: a light guide member that directly receives at least a part of the flash light from and that guides the received flash light to the light receiving portion of the external flash. 9. The underwater flash housing, wherein the light guide member has a light receiving surface protruding to the outside. 10. Camera having a built-in flash (12).
The built-in flash (12) is fixed so as to face the light emitting part (14) of the built-in flash (12), and at least the flash light from the light emitting part (14) of the built-in flash (12) is A built-in flash light guide device, which guides in a predetermined direction outside the photographing area of the camera (10). 11. The diffuse reflection member or the diffusion transmission member (34) is further provided facing the light emitting portion (14) of the built-in flash (12) of the camera (10). 10. Built-in flash light guide device according to 10. 12. The built-in flash light guide device (32, 34) according to claim 10 or 11, wherein the camera (10) having the built-in flash (12) is hermetically housed inside. Underwater camera housing. 13. A camera having a built-in flash (12).
An outer wall member for housing (10) in an airtight manner, and the camera (10) airtightly housed in the outer wall member.
The light guide prism (3) in which the light receiving portion (32x) is arranged so as to face and face the light emitting portion (14) of the built-in flash (12)
2) and a diffuse transmission member (34), one surface of which is provided to face the light emitting portion (32z) of the light guide prism (32) and the other surface of which is projected to the outside from the outer wall member. An underwater camera housing, which is characterized in that