JP4645021B2 - Electronic flash device and adapter for electronic flash device - Google Patents

Description

  The present invention relates to an electronic flash device that can handle close-up photography, and an adapter for an electronic flash device.

  If the electronic flash device is mounted on the accessory shoe of the camera and the light emitting portion of the electronic flash device main body is caused to emit light to perform close-up shooting, an unintended shadow may appear. This is because, since the distance between the tip of the photographing lens and the subject is short, the irradiation light strikes the subject obliquely, and a shadow is formed on the subject. Therefore, in the conventional electronic flash device for close-up photography, the light emitting part is separated from the main body, and only the light emitting part is attached to the tip of the lens barrel of the camera taking lens. Specifically, the minimum elements for light emission, such as a xenon tube and a trigger circuit, are mounted on the light emitting unit while leaving the battery, the booster circuit, and the light emission amount control circuit in the main body of the electronic flash device. And as shown in the external view shown in FIG. 13, the light emission part with which a photographic lens is mounted | worn and a main body are connected by the electrical cord, and the light emission current and the electrical control signal are transmitted by this electrical cord.

  In such an electronic flash device for close-up photography, it is desirable to form an annular light exit surface along the outer periphery of the taking lens so that the brightness of the illuminated subject is not biased. Therefore, in the flash device of Patent Document 1, one end of a large number of optical fibers is arranged facing a straight discharge tube in the light emitting part connected to the main body by an electric cord, and the other end of these optical fibers is arranged in an annular shape. ing. Thereby, the radiated light of the linear discharge tube is converted into annular light. In addition, as another prior art in which the light-emitting surface is annular, a method using a ring-shaped xenon tube or two C-shaped xenon tubes is known. Alternatively, there is a method in which several straight xenon tubes are arranged along the outer periphery of the lens barrel of the photographing lens, and annular light having a substantially uniform intensity is generated using a diffuser.

Further, Patent Document 2 discloses a camera that can switch the light emission form of a built-in flash device according to a shooting mode. In the normal photographing mode, light is emitted directly from the first irradiation window with the opening of the reflector covering the arc tube directed toward the first irradiation window on the front surface of the arc tube. In the short-distance shooting mode, the opening of the reflector is directed to one end of the optical fiber disposed in the camera. The other end of the optical fiber is led to an annular second irradiation window disposed on the outer periphery of the photographing lens, thereby forming an annular light exit surface. Such a configuration in which the emitted light of the light source in the camera is guided to the vicinity of the photographing lens by the light guide element and emitted is also disclosed in Patent Document 3 as a photographing auxiliary device.
Published Utility Model Showa 52-87240 (Section 2-6, FIGS. 1 to 3) JP 2000-147612 A (Section 3-9, FIGS. 1 to 9) Registered Utility Model Publication No. 3048689 (Section 2-4, Fig. 3)

The configuration in which the separated light emitting unit is attached to the photographing lens as in Patent Document 1 has the following problems.
First, at least electronic parts such as a xenon tube, a trigger circuit, and a voltage doubler circuit, and mechanical parts such as a reflecting mirror and a protector are disposed in the light emitting unit. When such a light emitting unit is attached to the photographing lens, the leading end of the photographing lens becomes heavy, and the balance of the whole photographing system may be lost. In addition, the load on the motor for adjusting the lens position increases, and there is a possibility that the autofocus operation cannot be performed smoothly.

Second, the light emission current is generally a large current of about 100A to 200A. Since it is necessary to increase the diameter of the conductive wire in the electric cord in order to flow this light emission current, the entire electric cord becomes thick and heavy. Accordingly, the electric cord becomes hard especially at low temperatures, and there is a possibility that the operation of attaching the light emitting unit to the photographing lens cannot be performed smoothly.
Thirdly, since the large current line for light emission and the small signal line for control coexist in one electric cord, there is a possibility that the electronic flash device may malfunction due to electromagnetic induction and noise. The light emitting unit of the electronic flash device emits a strong electromagnetic wave when emitting light. Therefore, in the case of a photographic lens with a built-in electronic circuit, the electronic circuit may malfunction due to electromagnetic wave noise during light emission.

  On the other hand, although the flash device built-in camera of Patent Document 2 and the photographing auxiliary device of Patent Document 3 are considered not to have the above-described problems, they cannot be photographed under various conditions. Specifically, it is not possible to take a three-dimensional picture using main lighting and auxiliary lighting, or to take an artistic picture using various lighting. In order to realize a variety of lighting using the flash device built-in camera of Patent Document 2 and the photographing auxiliary device of Patent Document 3, it is necessary to prepare two or more electronic flash devices.

An object of the present invention is to provide an electronic flash device for close-up photography, in which there is no risk of the tip of the taking lens becoming heavy or malfunctioning.
Another object of the present invention is to make the above electronic flash device compatible with normal photography.
Another object of the present invention is to provide an electronic flash device adapter that enables a normal photographing electronic flash device in which a light emitting portion is not separated to be compatible with close-up shooting.

  Another object of the present invention is to realize various lighting in the electronic flash device and the electronic flash device adapter.

The electronic flash device according to claim 1 includes a plurality of light emitting units that emit light, a plurality of storage units, a plurality of light transmission members, a dividing unit, a plurality of light output units, and a light emission control unit. It is characterized by being. The plurality of storage units respectively store a plurality of light emitting units. The plurality of light transmission members receive the radiated light of any one of the different light emitting units on one end side and transmit the received light to the other end side. The division unit is provided between the plurality of storage units, and reduces the overlap of the light emitted from each light emitting unit and emits the light outside the storage unit. The plurality of light output units are respectively disposed on the other end side of the plurality of light transmission members, and irradiate the subject with the light transmitted to the other end side of the light transmission member. The light emission control unit controls the light emission amount of the plurality of light emitting units for each light emitting unit.

According to a second aspect of the present invention, the electronic flash device is characterized by the following points. 1stly, the several light emission part has a light emission surface which emits radiated light. Second, a fixing member that detachably fixes one end side of the plurality of light transmission members is provided at a position on the traveling direction side of the emitted light with respect to the light exit surface.
According to a third aspect of the present invention, there is provided the electronic flash device according to the second aspect , wherein the fixing member includes a dividing member that divides the internal space of the fixing member so as to correspond to each of the plurality of light transmission members. .

According to a fourth aspect of the present invention, there is provided the electronic flash device according to any one of the first to third aspects of the present invention. First, it has mounting means for mounting a plurality of light output units on the tip of a barrel of a camera taking lens along the outer periphery of the taking lens. Second, when a plurality of optical output section is attached to the distal end of the lens barrel of the photographic lens by the mounting means, the light exit surface formed by a plurality of light output portions are ring-shaped.

According to a fifth aspect of the present invention, there is provided the electronic flash device according to any one of the first to fourth aspects of the present invention. First, the plurality of light transmission members are separated from each other. Second, it has fixing means for fixing the plurality of light output units on the plurality of illumination stands, respectively.
The electronic flash device according to a sixth aspect of the present invention is the electronic flash device according to any one of the first to fifth aspects, wherein the plurality of light transmission members have a material that reflects light inside, while reflecting the light by the material. Communicate ”.

Electronic flash device according to claim 7, in the invention of any one of claims 1 to 6, each of the plurality of light emitting portions, and wherein the maximum emission intensity is substantially equal.
Electronic flash device adapter according to claim 8 and a housing portion, a dividing member, and a plurality of light transmitting members, characterized in that it comprises a plurality of the light output portion. The housing portion has an opening, and is detachably attached to the electronic flash device with the opening directed toward the light emitting surface of the light emitting portion of the electronic flash device, and covers the light emitting surface with the opening when attached. The dividing member is arranged in the housing part and divides the space in the housing part into a plurality of parts so that the emitted light of the light emitting part incident on the opening surface of the opening part travels on the opposite side to the opening surface in the housing part. To do. The plurality of light transmitting members respectively receive the emitted light of the light emitting portion through one of the plurality of different spaces divided by the dividing member, and transmit the received light to the other end side. The plurality of light output units are respectively disposed on the other end side of the plurality of light transmission members, and irradiate the subject with the light transmitted to the other end side of the light transmission member. The dividing member changes the ratio of the incident light quantity for each of the plurality of spaces when the emitted light of the light emitting unit incident on the opening surface enters the plurality of divided spaces.

The adapter for an electronic flash device according to a ninth aspect is the invention according to the eighth aspect, wherein the divided member is arranged to be rotatable or movable so that the position of the opening side of the divided member can be changed. Features.
The adapter for an electronic flash device according to a tenth aspect is characterized in that, in the invention according to the eighth aspect, a neutral density filter is provided in a space divided by the dividing member.

  An adapter for an electronic flash device according to an eleventh aspect of the present invention is characterized in the following points in any of the eighth to tenth aspects of the invention. First, it has mounting means for mounting a plurality of light output units on the tip of a barrel of a camera taking lens along the outer periphery of the taking lens. Secondly, when the plurality of light output portions are mounted on the tip of the lens barrel of the photographing lens by the mounting means, the light exit surface formed by the plurality of light output portions is annular.

An electronic flash device adapter according to a twelfth aspect of the present invention is characterized in the following points in any of the eighth to eleventh aspects of the invention. First, the plurality of light transmission members are separated from each other. Second, it has fixing means for fixing the plurality of light output units on the plurality of illumination stands, respectively.
An adapter for an electronic flash device according to a thirteenth aspect of the present invention is the adapter according to any one of the eighth to twelfth aspects of the present invention. Communicate while letting go ".

  In one form of the electronic flash device of the present invention, the light transmitting member and the light output unit can be separated from the main body while leaving the plurality of light emitting units in the main body of the electronic flash device. Therefore, at the time of close-up photography, the light output unit is attached to the photographing lens, and the emitted light of the light emitting unit of the main body may be emitted from the light output unit via the light transmission member. In normal shooting, the light emitted from the light emitting unit of the main body may be directly irradiated onto the subject without using the light transmission member and the light output unit. Therefore, both normal photography and proximity photography can be handled. Further, since the light output unit does not include a light emitting circuit, there is no possibility that the tip of the photographing lens becomes heavy or malfunctions during close-up photography.

  In another embodiment of the electronic flash device of the present invention, the electronic flash device includes a plurality of light emitting units and a light emission control unit that controls the light emission amount of these light emitting units for each light emitting unit. For this reason, since the ratio of the light emission amounts of the plurality of light emitting units can be changed, non-uniform illumination light can be created. Therefore, a variety of lighting can be realized. Furthermore, since the maximum light emission intensity of the plurality of light emitting units is substantially equal, it is easy to control the ratio of the light emission amounts.

  An adapter for an electronic flash device according to the present invention has a plurality of spaces divided by a dividing member and a housing portion mounted on the electronic flash device, and a plurality of receiving light emitted from the electronic flash device through the divided spaces. The light transmission member and a plurality of light output portions. Therefore, for example, if a plurality of light output units are attached to the photographing lens, the electronic flash device for normal photographing can be adapted to close-up photographing. In addition, even if the electronic flash device has only one light emitting element, it is possible to illuminate the subject from a plurality of different directions by installing the plurality of light output units apart from each other.

  In one form of the adapter for an electronic flash device of the present invention, the dividing member is disposed so as to be rotatable or movable in the casing. Alternatively, a neutral density filter is disposed in at least one of the divided spaces. For this reason, the ratio of the amount of light incident on these spaces from the electronic flash device can be adjusted. Therefore, since non-uniform illumination light can be generated, a variety of lighting can be realized even using an electronic flash device having only one light emitting element.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 shows an exploded side view of an imaging system according to the first embodiment of the present invention. This embodiment corresponds to claims 1 to 7. As shown in the figure, the photographing system 10 includes a camera 14 equipped with a photographing lens 12 and an electronic flash device 16 according to the present embodiment. The electronic flash device 16 includes a main body 20 that is detachably mounted on an accessory shoe of the camera 14, a light moving unit 22, and a mounting member 24. The light moving unit 22 includes a first light output unit 30a, a second light output unit 30b, a first light transmission member 32a, a second light transmission member 32b, and first and second light transmission members 32a and 32b. A fixing member 34 that fixes one end side to the front surface of the light exit surface of the main body 20 is provided.

  FIG. 2 is a schematic view of the main body 20 of the electronic flash device 16 as viewed from the front side including the light exit surface. As shown in the figure, the main body 20 includes a first light emitting unit 44 including a first light emitting circuit 42 (see FIG. 7 described later) including a first light emitting tube 40 and a second light emitting including a second light emitting tube 46. And a second light emitting unit 50 having a circuit 48 (see FIG. 7 described later). Further, the electronic flash device 16 has a housing 52 that houses the first arc tube 40 and the second arc tube 46. The housing 52 has a transparent plate on the front surface that is a light exit surface. In addition, a light-shielding dividing member 54 that divides the space in the housing 52 into two, that is, a space that houses the first arc tube 40 and a space that houses the second arc tube 46, is disposed in the housing 52. ing. By this dividing member 54, the ratio of the radiated light of the first arc tube 40 and the radiated light of the second arc tube 46 coming out of the housing 52 is reduced. Therefore, if the first arc tube 40 and the second arc tube 46 emit light with different intensities, the brightness of the illuminated subject is biased. The first arc tube 40 and the second arc tube 46 have the same maximum emission intensity, and are xenon tubes, for example.

  FIG. 3 is a perspective view illustrating a schematic configuration of the light moving unit 22. As shown in the drawing, the fixing member 34 is a substantially housing having a shape that is detachably fitted to the light exit surfaces of the first and second light emitting units 44 and 50. A light-shielding dividing member 60 is disposed in the fixing member 34, and thereby the space in the fixing member 34 is divided into two equal parts, a first space 62a and a second space 62b. The inner surface of the fixing member 34 including the dividing member 60 is covered with a totally reflective film.

  The first and second light transmission members 32a and 32b are configured by covering an optical fiber bundle with rubber or the like, and can be bent. The first light transmission member 32a has one end connected to the first space 62a in the fixing member 34 and the other end connected to the first light output unit 30a. The optical fiber bundle of the first light transmission member 32a receives the radiated light of the first arc tube 40 at one end via the first space 62a and transmits the received light to the other end. The light emitted from the other end of the optical fiber bundle of the first light transmission member 32a is emitted from the light output surface (shaded area in the drawing) of the first light output unit 30a. Similarly, the optical fiber bundle of the second light transmission member 32b receives the emitted light of the second arc tube 46 at one end via the second space 62b, and transmits the received light to the other end. The light emitted from the other end of the optical fiber bundle of the second light transmission member 32b is emitted from the light output surface (shaded area in the drawing) of the second light output unit 30b. The 1st light output part 30a and the 2nd light output part 30b are the shapes which made the ring a half, and radiate | emit light from the front surface which is a light emission surface. That is, an annular light exit surface is formed by combining the first and second light output portions 32a and 30b.

  FIG. 4 is a schematic cross-sectional view of one end side of the first light emitting unit 44, the first space 62a in the fixing member 34, and the first light transmission member 32a. As shown in the figure, in the space for housing the first arc tube 40 in the casing 52, the reflecting mirror is provided so as to cover the first arc tube 40 and the opening surface faces the light exit surface of the first light emitting unit 44. 66 is arranged. In the first space 62 a, the optical fiber bundle is disposed with the tip thereof facing the first arc tube 40 in order to efficiently receive the radiated light of the first arc tube 40. The configurations of the second space 62b and the second light transmission member 32b in the fixing member 34 are the same as those of the first space 62a and the first light transmission member 32a, respectively.

  FIG. 5 is a perspective view showing details of the other end side of the first light transmission member 32 a, the first light output portion 30 a, and the mounting member 24. As shown in the figure, the mounting member 24 formed in a substantially ring shape has four protrusions 70. Two of these four each fix the first and second light output portions 30a, 30b on the mounting member 24, respectively. These four protrusions 70 are made of, for example, a resin and are formed in a substantially cylindrical shape. The center portion has a large diameter, and has a notch 72 for increasing flexibility. In addition, on both sides of the outer periphery of the mounting member 24, recesses 76 are formed for passing the first and second light transmission members 32a and 32b when the first and second light output portions 30a and 30b are fixed. Yes. Further, the mounting member 24 has two screw holes 78 and two fixing screws 80 for fixing the mounting member 24 to the lens barrel of the photographing lens 12 through the screw holes 78 by two. A semi-circular rubber cushion 82 for protecting the lens barrel when attached to the taking lens 12 is attached to the tips of the fixing screws 80, respectively. The mounting member 24 has an inner diameter larger than the outer diameter of the lens barrel of a general photographic lens. Therefore, when fixing the mounting member 24 to the tip of the photographic lens 12, the fixing screw 80 may be turned so that the rubber cushion 82 presses the lens barrel of the photographic lens 12.

  In the first light output unit 30a, the optical fiber of the first light transmission member 32a is disposed with the tip thereof facing the light output surface of the first light output unit 30a. On this light exit surface, a diffusing plate 86 is arranged to use a number of point light sources formed at the tips of the optical fiber bundles as surface light sources. Further, two substantially cylindrical mounting holes 88 for fitting the projections 70 of the mounting member 24 are formed on the opposite side of the first light output portion 30a from the light exit surface. These mounting holes 88 have a diameter shorter than the maximum diameter of the protrusion 70 only on the opening surface. For the sake of simplicity, only a few optical fibers are shown in the figure, but the number of optical fibers is not limited to this. The structure of the second light output unit 30b is the same as that of the first light output unit 30a.

  FIG. 6 shows a stand fixing member for fixing the first and second light output portions 30b on light stands (illumination stands, not shown) installed at locations apart from each other in the case of two-lamp illumination. FIG. As shown in the drawing, the stand fixing member 92 has two projections 94 for fitting either the first or second light output portion 30a, 30b, similarly to the mounting member 24. The structure of these protrusions 94 is the same as that of the protrusion 70 of the mounting member 24. Further, since the fixing member 92 for the stand has the screw holes 96 for fitting into the screws of the light stand on the three surfaces, respectively, three ways of standing on the light stand are possible. In the case of a light stand provided with a mechanism for fixing the lighting device from both sides, the stand fixing member 92 may be held by this mechanism without using the screw hole 96.

  FIG. 7 shows a main part of the circuit configuration in the main body 20 of the electronic flash device 16. As shown in the figure, the main unit 20 of the electronic flash device 16 includes a replaceable battery Batt, a booster circuit 100 (DC-DC converter), diodes D1 and D2, a voltage level detection circuit 104, and a main capacitor C1. A first light emitting circuit 42, a second light emitting circuit 48, a light emission amount control unit 108, and an information display unit 110. The information display unit 110 displays information necessary for shooting such as shooting conditions input by the user operating the operation unit (not shown) of the main body unit 20 of the electronic flash device 16 and the amount of light emission.

  The first light emitting circuit 42 includes a resistor R1, a first arc tube 40, a first trigger circuit 114, a first voltage doubler circuit 116, and an IGBT (Insulated Gate Bipolar Transistor) 118 which is a switching element. ing. The first trigger circuit 114 includes a trigger capacitor C2 and a trigger coil T1. In the trigger coil T1, the side directly connected to the trigger capacitor C2 is the primary side, and the opposite side is the secondary side. The first voltage doubler circuit 116 includes a diode D3, a capacitor C3, and a resistor R2.

  The second light emitting circuit 48 has the same configuration as that of the first light emitting circuit 42, and includes a resistor R3, a second arc tube 46, a second trigger circuit 122, a second voltage doubler circuit 124, and an IGBT 126. Has been. The second trigger circuit 122 includes a trigger capacitor C4 and a trigger coil T2. The second voltage doubler circuit 124 includes a diode D4, a capacitor C5, and a resistor R4.

  Here, the circuit operation when the first light emitting circuit 42 emits light will be described. First, when a power button (not shown) of the electronic flash device 16 is turned on, the light emission amount control unit 108 inputs a boosting start signal a to the booster circuit 100. In this state, the voltage at the gate terminal of the IGBT 118 is at a low level, and the IGBT 118 is off (non-conducting). In synchronism with the input of the boost start signal a, the booster circuit 100 converts the voltage of the battery Batt into a DC high voltage (eg, 330 V) necessary for light emission, and charges the main capacitor C1 via the diodes D1 and D2. To do.

As a result, the capacitor C3 of the first voltage doubler circuit 116 is charged to the same voltage as the main capacitor C1 via the resistors R1 and R2. Since the trigger capacitor C2 is connected at both ends via the resistor R1 and the primary winding of the trigger coil T1, the voltage difference between both ends is substantially zero V. Thereafter, when the charging voltage of the main capacitor C1 reaches a predetermined value, the voltage level detection circuit 104 inputs a charging completion signal b to the light emission amount control unit. In synchronization with this, the light emission amount control unit 108 stops the operation of the booster circuit 100. As described above, the state in which the main capacitor C1 and the capacitor C3 are charged to a predetermined high voltage, the charging voltage of the trigger capacitor C2 is zero V, and the IGBTs 118 and 126 are non-conductive is set as an initial state.

  Next, the shutter button of the camera 14 is fully pressed, and a light emission command signal from the camera 14 is input to the electronic flash device 16. In synchronization with this, the light emission amount control unit 108 switches the input voltage to the gate terminal of the IGBT 118 to a high level as a light emission start signal. In synchronization with this, the collector-emitter of the IGBT 118 is conducted, and a voltage about twice the charging voltage of the main capacitor C1 is applied to both ends of the first arc tube 40 by the main capacitor C1 and the capacitor C3. (At this time, the diode D3 is off). At the same time, the electric charge accumulated in the main capacitor C1 instantaneously flows to the primary winding of the trigger coil T1 as an exciting current via the trigger capacitor C2. In synchronization with this, a trigger voltage of several kilovolts is generated in the secondary winding of the trigger coil T1, and this is applied to the outer wall of the first arc tube 40. Thereby, the xenon gas inside the first arc tube 40 is excited, and the first arc tube 40 emits light.

  On the other hand, the photometric system of the camera 14 is also operating. For example, if the camera 14 is a film camera and is set to the TTL light control mode, the camera 14 inputs a turn-off command signal to the electronic flash device 16 when the exposure amount reaches an appropriate value. In synchronization with this, the light emission amount control unit 108 switches the input voltage to the gate terminal of the IGBT 118 to a low level as a light emission stop signal. In synchronization with this, the IGBT 118 is switched to the non-passing state, so that the path of the current flowing through the first arc tube 40 is cut off and the light emission stops. After the light emission is stopped, the main capacitor C1, the first trigger circuit 114, and the first voltage doubler circuit 116 are reset to the initial state in order to prepare for the next light emission operation.

  Since the circuit operation at the time of light emission of the second light emitting circuit 48 is the same as that of the first light emitting circuit 42, the description is omitted. Note that the light emission amount control unit 108 separately controls the timing for switching the IGBT 118 of the first light emitting circuit 42 on and off and the timing for switching the IGBT 126 of the second light emitting circuit 48 on and off separately. The light emission amount of the arc tube 40 and the light emission amount of the second arc tube 46 can be controlled separately. The light emission amount control unit 108 can also control both the light emission amount of the first arc tube 40 and the light emission amount of the second arc tube 46 at the same time.

  Here, the correspondence between the claims and the present embodiment will be described. In addition, the correspondence shown below is one interpretation shown for reference, and does not limit the present invention. The light emission control unit described in the claims corresponds to the light emission amount control unit 108. The fixing member for fixing the light transmission member referred to in the claims corresponds to the fixing member 34. The mounting means for mounting the light output section referred to in the claims to the photographing lens corresponds to the mounting member 24. The fixing means to the lighting stand mentioned in the claims corresponds to the stand fixing member 92.

  In the above-described photographing system 10, when performing close-up photographing, the main body 20 of the electronic flash device 16 is attached to the accessory shoe of the camera 14, and the fixing member 34 is fixed to the front surface of the light emitting surface of the main body 20. Then, the first and second light output portions 30 a and 30 b are fitted on the mounting member 24, and the mounting member 24 is fixed to the distal end of the barrel of the photographing lens 12. FIG. 8 is a side view showing this state. In this state, the first and second light output units 30a and 30b form an annular light exit surface, so that it is possible to perform shadowless photography with no bias in the brightness of the illuminated subject. In addition, for example, when it is desired that the brightness of the subject is biased to have a stereoscopic effect, the user can set the light emission amounts of the first and second arc tubes 40 and 46 to different values via the operation unit. Good. The light emission amount control unit 108 adjusts the timing of switching the IGBTs 118 and 126 on and off according to the input values, and sets the light emission amounts of the first and second arc tubes 40 and 46 to the input values. . Thereby, the brightness of the illuminated subject can be slightly changed to the left and right or up and down. This is the same in the case of normal shooting described below.

When performing normal photographing, the main body 20 of the electronic flash device 16 may be attached to the accessory shoe of the camera 14 without using the light moving part 22 and the attachment member 24. In this case, since the light moving part 22 is not mounted, the light can be emitted far away.
When it is desired to illuminate the subject from a plurality of different directions, the first and second light output portions 30a and 30b are separated from each other using the stand fixing member 92 after the main body portion 20 is attached to the accessory shoe of the camera 14. Fix on the two light stands installed. However, as the first and second light transmission members 32b, those having a length longer than the distance between the light stand and the camera 14 are used.

  As described above, in the first embodiment, the first and second light emitting units 44 and 50 are built in the main body 20 of the electronic flash device 16, and the light moving unit 22 separated from the main body 20 is provided for close-up photography. In the case of close-up photography, the first and second light output units 30b are attached to the photographing lens 12, and the radiated light of the main body unit 20 is emitted from the first and second light output units 30b via optical fibers. Thus, an annular light exit surface is formed along the outer periphery of the photographing lens 12 to illuminate the subject. In the case of normal shooting, the subject is directly illuminated by the emitted light from the main body unit 20 without using the light moving unit 22. Therefore, both normal photography and proximity photography can be handled.

Since the first and second light output units 30a and 30b attached to the photographing lens 12 have a simple configuration that does not include electronic parts such as a xenon tube, the tip of the photographing lens 12 does not become heavy. Therefore, the conventional problem that the balance of the whole photographing system is lost or the load on the motor for adjusting the lens position becomes large is solved.
The first and second light transmission members 32a and 32b that connect the main body portion 20 and the first and second light output portions 30a and 30b attached to the photographing lens 12 are configured by bendable optical fibers. That is, unlike a conventional electronic flash device for close-up photography, electrical signals are not transmitted within a cord that connects the electronic flash device body and a member attached to the photographing lens. Therefore, the conventional problem that the large current for light emission and the small control signal cause malfunction due to electromagnetic induction and noise with each other, or the circuit in the photographing lens malfunctions due to electromagnetic noise during light emission is solved.

  In addition, if the thickness of one optical fiber and the number of optical fibers are appropriately selected, the first and second light transmission members 32a and 32b may hinder the position change of the first and second light output units 30a and 30b. It can be maintained with no softness. Therefore, the conventional problem that the electric cord becomes hard at low temperatures and the member separated from the main body cannot be smoothly attached to the photographing lens is solved. In close-up photography, it is considered that the subject can be sufficiently illuminated with a small amount of light. Therefore, the number of optical fibers is reduced within a range where the maximum light emission amount of the first and second light output units 30a and 30b (that is, the light conduction efficiency of the first and second light transmission members 32a and 32b) is allowable. Then, the flexibility of the first and second light transmission members 32a and 32b may be improved.

  The main body portion 20 was provided with first and second arc tubes 40 and 46, and these radiated lights were separately emitted from the first and second light output portions 30a and 30b. For this reason, it is possible to illuminate the subject from a plurality of different directions simply by separating the first and second light output units 30a and 30b. Moreover, the ratio of the light emission amounts emitted from the first and second light output units 30a and 30b can be changed only by changing the ratio of the light emission amounts of the first and second arc tubes 40 and 46, respectively. Therefore, not only illumination light that uniformly illuminates the subject but also non-uniform illumination light can be intentionally generated. As a result, a variety of lighting can be realized, so that stereoscopic and artistic photographs can be easily taken. Further, since the maximum light emission intensity of the first and second arc tubes 40 and 46 is equal, the ratio of the light emission amounts of both can be easily controlled.

  Further, the inner diameter of the mounting member 24 is formed larger than the outer diameter of the lens barrel of a general photographic lens, and the mounting member 24 is fixed to the lens barrel of the photographic lens by a fixing screw 80. For this reason, the mounting member 24 can be mounted on any ordinary photographing lens (for example, a diameter of 52 mm to 72 mm). Therefore, the first and second light output units 30a and 30b can be detachably mounted on any ordinary photographing lens via the mounting member 24. Note that a plurality of mounting members and light output portions having different sizes and shapes may be prepared so as to be compatible with any photographing lens. As described above in detail, according to the electronic flash device 16 of the first embodiment, user convenience is greatly improved.

  In the first embodiment, the example in which the maximum light emission intensity of the first arc tube 40 and the second arc tube 46 is equal is described. The present invention is not limited to such an embodiment. In the range in which the light emission amount ratio of both can be easily controlled according to the user's setting, the maximum light emission intensity of both may be slightly different. This slightly different range corresponds to the abbreviation “maximum emission intensity is substantially equal” in the claims.

  An example in which there are two light emitting elements, two light transmission members, and two light output units has been described. The present invention is not limited to such an embodiment. The number of light emitting elements, light transmission members, and light output portions may be different from each other. For example, there may be four light emitting elements from the first to the fourth, and there may be two light transmission members and two light output units. In this case, for example, the radiated light of the first and second light emitting elements is emitted from the first light output unit only through the first light transmission member, and the first light transmission member is used only through the second light transmission member. The emitted light of the third and fourth light emitting elements may be emitted from the second light output unit. Alternatively, there may be a form in which there are two light emitting elements and four light transmission members and four light output units. In this case, for example, both the first and second light transmission members receive the emitted light of the first light emitting element, and both the third and fourth light transmission members receive the emitted light of the second light emitting element. To. And what is necessary is just to radiate | emit light from the 1st-4th light output part respectively connected to the front-end | tip of the 1st-4th light transmission member. In this case, if the first to fourth light output units are arranged at appropriate positions, the subject can be illuminated from four different directions, and more various lighting can be realized.

<Second Embodiment>
FIG. 9 shows a schematic configuration of an adapter for an electronic flash device according to the second embodiment of the present invention. This embodiment corresponds to claims 8, 9, and 11 to 13. The same elements as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. As shown in FIG. 9 (a), the electronic flash device adapter 140 includes a fixing member 144 (corresponding to the housing portion of the claims), a first light transmission member 150a, a second light transmission member 150b, The first light output unit 30a, the second light output unit 30b, and the mounting member 24 are provided. Although not shown in this figure, the electronic flash device adapter 140 also has the stand fixing member 92 of the first embodiment.

  The fixing member 144 has an opening 152 for covering the light exit surface of the light emitting unit 154 of a general electronic flash device. The fixing member 144 is detachably fitted to the light emitting unit 154 of the electronic flash device so that the opening 152 covers the light emitting surface, that is, the opening surface of the opening 152 is aligned with the light emitting surface of the light emitting unit 154. This is a substantially housing having a shape. The inner surface of the fixing member 144 is covered with a totally reflective film. Further, a plate-shaped light exit surface dividing member 158 (corresponding to the dividing member described in claims) is disposed in the fixed member 144 so as to be rotatable about the rotation shaft 160. The surface of the light exit surface dividing member 158 is totally reflective. Further, when the direction (extending direction) of the light-emitting surface dividing member 158 that is plate-shaped is along the normal direction of the opening surface, the rotating shaft 160 is positioned at a position where the light-emitting surface dividing member 158 bisects the opening surface. Is arranged.

  The opening 152 which is a space in the fixing member 144 is divided into a first space 162a and a second space 162b by a light exit surface dividing member 158. That is, by rotating the light exit surface dividing member 158, the ratio of the ratio occupied by the first space 162a and the ratio occupied by the second space 162b in the area of the opening surface of the opening 152 can be changed. Thereby, the ratio of the ratio that the emitted light of the light emitting unit 154 enters the first space 162a and the ratio that enters the second space 162b can be changed.

  The structure and arrangement of the first and second light transmission members 150a and 150b are substantially the same as those of the first and second light transmission members 32a and 32b of the first embodiment. That is, the optical fiber bundle of the first light transmitting member 150a receives the emitted light of the electronic flash device at one end via the first space 162a, transmits the received light to the other end, and the transmitted light is The light is emitted from the first light output unit 30a. Similarly, the optical fiber bundle of the second light transmission member 150b receives the emitted light of the electronic flash device at one end via the second space 162b, transmits the received light to the other end, and the transmitted light is The light is emitted from the second light output unit 30b.

  FIG. 9B is a top view of the fixing member 144. The rotating shaft 160 protrudes from the housing-like fixing member 144. Therefore, even after the fixing member 144 is mounted on the electronic flash device, the light exit surface dividing member 158 can be rotated by rotating the rotating shaft 160. A scale indicating the rotation angle of the light exit surface dividing member 158 is provided on the upper surface of the fixing member 144. Further, an index that moves in conjunction with the rotation shaft 160 is provided. With this index, the arrangement angle of the light exit surface dividing member 158 can be known without looking into the fixing member 144. In addition, as shown in FIG.9 (c), the scale which shows the angle of rotation of the light emission surface division | segmentation member 158 is right side (one of 1st and 2nd light output part 30a, 30b) and left side (1st and 2nd). You may display by the light quantity ratio of the other of light output part 30a, 30b.

  FIG. 10 shows details of the inside of the fixing member 144 and one end side of the first and second light transmission members 150a and 150b. As shown in the figure, one end side of the optical fiber bundles of the first and second light transmission members 150a and 150b is susceptible to not only the direct light from the electronic flash device but also the light reflected by the light exit surface dividing member 158. Arranged at an angle. Specifically, the optical fiber farther from the rotating shaft 160 is arranged along the normal direction of the opening surface, and is easy to receive the emitted light of the electronic flash device directly. Further, the optical fiber closer to the rotation axis 160 is arranged to be inclined toward the rotation axis 160 so that the light reflected by the light exit surface dividing member 158 is easily received.

  Next, an operation example at the time of shooting will be described. When performing close-up photography, the electronic flash device is attached to the camera, and the fixing member 144 of the electronic flash device adapter 140 is fixed to the front surface of the light emitting surface of the electronic flash device. Then, the first and second light output portions 30a and 30b are fitted onto the mounting member 24, and the mounting member 24 is fixed to the distal end of the barrel of the photographing lens of the camera. In this state, since the first and second light output portions 30a and 30b form an annular light exit surface, shadowless imaging can be performed.

  Further, when it is desired to illuminate the subject from a plurality of different directions, after fixing the fixing member 144 to the electronic flash device, the first and second light output units 30a and 30b are separated from each other by using, for example, a stand fixing member 92. What is necessary is just to fix each on two light stands installed in the place. However, the first and second light transmission members 150a and 150b have a length that is equal to or longer than the distance between the light stand and the camera. When it is desired to bias the brightness of the subject, the user rotates the light exit surface dividing member 158 to adjust the ratio of the amount of light entering the first space 162a and the amount of light entering the second space 162b. That's fine. Thereby, the brightness of the illuminated subject can be biased. This is the same in the case of the close-up photography described above.

  As described above, by using the electronic flash device adapter 140 of the second embodiment, it is possible to easily perform close-up shooting using the normal flash electronic flash device. Further, even if the electronic flash device has only one light emitting element, it is possible to illuminate the subject from a plurality of different directions only by separating the first and second light output units 30a and 30b. Further, the ratio of the light emission amounts emitted from the first and second light output units 30a and 30b can be changed by the light exit surface dividing member 158. Since the scale indicating the rotation angle of the light exit surface dividing member 158 is provided on the upper surface of the fixed member 144, the adjustment of the ratio of the light emission amounts is very easy. Accordingly, not only uniform illumination light but also non-uniform illumination light can be generated, and thus a variety of lighting can be realized using a conventional electronic flash device having only one light emitting element. As a result, stereoscopic photographs and artistic photographs can be easily taken.

Furthermore, in the second embodiment, the same effects as in the first embodiment can be obtained as follows.
Since the first and second light output units 30a and 30b have a simple configuration, the leading end of the photographing lens does not become heavy. Therefore, the balance of the entire photographing system is not lost, and the load on the motor for adjusting the lens position does not increase. In addition, the first and second light transmission members 150a and 150b are made of bendable optical fibers. Therefore, the conventional problem that the large current for light emission in the electric cord and the small control signal cause malfunction due to electromagnetic induction and noise with each other, or the circuit in the photographing lens malfunctions due to electromagnetic noise during light emission is solved. .

  If the thickness of one optical fiber and the number of optical fibers are appropriately selected, the first and second light transmission members 150a and 150b can be maintained at appropriate softness. Therefore, the conventional problem that the electric cord becomes hard at low temperatures and the member separated from the main body cannot be smoothly attached to the photographing lens is solved. In addition, since the mounting member 24 similar to that of the first embodiment is used, the first and second light output units 30a and 30b can be detachably mounted on any ordinary photographing lens. As described above in detail, according to the electronic flash device adapter 140 of the second embodiment, user convenience is greatly improved.

  In the second embodiment, the example in which the light exit surface dividing member 158 is rotatably arranged to divide the space in the fixing member 144 has been described. The present invention is not limited to such an embodiment. For example, as shown in FIG. 11, the light-emitting surface dividing member may be arranged so as to be slidable in a direction parallel to the opening surface of the fixing member to divide the space in the fixing member. Also in this case, as in the present embodiment, the ratio of the amount of light entering each space divided by the light exit surface dividing member can be changed.

<Third Embodiment>
FIG. 12 shows a schematic configuration of an electronic flash device adapter according to the third embodiment of the present invention. This embodiment corresponds to claims 8 and 10 to 13. The same elements as those in the first and second embodiments are denoted by the same reference numerals, and redundant description is omitted. As shown in the drawing, the electronic flash device adapter 180 includes a fixing member 184, a first light transmission member 190a, a second light transmission member 190b, a first light output unit 30a, and a second light output unit 30b. And a mounting member 24. Although not shown in this figure, the electronic flash device adapter 180 also has the stand fixing member 92 of the first embodiment.

  The fixing member 184 has an opening 192 for covering the light exit surface of the light emitting unit 154 of the electronic flash device. The fixing member 184 has a shape that is detachably fitted to the light emitting unit 154 so that the opening 192 covers the light emitting surface, that is, the opening surface of the opening 192 is aligned with the light emitting surface of the light emitting unit 154. It is a housing. The inner surface of the fixing member 184 is covered with a totally reflective film. In the fixing member 184, a light-emitting surface dividing member 198 having a substantially plate-like surface and a substantially plate-like shape is disposed. The light exit surface dividing member 198 is arranged such that its direction (extending direction) is along the normal direction of the opening surface. By this light exit surface dividing member 198, the opening 192, which is the space in the fixing member 184, is divided into two equal parts, the first space 202a and the second space 202b.

  A plurality of grooves 208 for fitting a plurality of neutral density filters 204 are formed on the inner wall of the fixing member 184 and the surface of the light exit surface dividing member 198. That is, even if there is only one light emitting element of the light emitting unit 154 of the electronic flash device, the first space 202a can be obtained by inserting the neutral density filter 204 into at least one of the first and second spaces 202a and 202b. The ratio between the amount of light entering the light and the amount of light entering the second space 202b can be adjusted. When it is desired to reduce the amount of light entering the first space 202a, for example, the number of disabling filters 204 (up to four in the example of FIG. 12) can be inserted into the first space 202a or the concentration is high. A neutral density filter 204 (that is, low light transmittance) may be inserted into the first space 202a.

  Although not shown in the figure, the neutral density filter 204 can be inserted or removed even after the fixing member 184 is attached to the electronic flash device. Such a configuration can be realized, for example, by providing a plurality of slits for inserting the neutral density filter 204 on the upper surface of the fixing member 184. In the example of FIG. 12, there are four grooves on the left and right, and therefore, four slits on the left and right may be provided corresponding to each of these grooves. In addition, a slit lid having a shape that is detachably fitted to these slits may be provided, and the slit lid may be fitted from the upper surface of the fixing member 184. Thereby, light leakage from the slit in which the neutral density filter 204 is not inserted is prevented.

  The first and second light transmission members 190a and 190b are arranged except that one end side of the inner optical fiber bundle is arranged along the normal direction of the opening surface so as to easily receive the radiated light of the light emitting portion 154. This is the same as the first and second light transmission members 150a and 150b of the second embodiment. That is, the optical fiber bundle of the first light transmission member 190a receives the emitted light of the electronic flash device at one end via the first space 202a, and the optical fiber bundle of the second light transmission member 190b is the second space 202b. The radiated light of the electronic flash device is received at one end via the.

  The above-described electronic flash device adapter 180 may be the same as that of the second embodiment when photographing so that the brightness of the illuminated subject is not biased. When it is desired that the brightness of the subject be biased, the user may insert the neutral density filter 204 into at least one of the first and second spaces 202a and 202b. As a result, the ratio between the amount of light entering the first space 202a and the amount of light entering the second space 202b can be adjusted, and non-uniform illumination light can be generated. As described above, also in the electronic flash device adapter 180 of the third embodiment, the same effects as those of the second embodiment can be obtained.

<Supplementary items of the present invention>
In the second and third embodiments, the space in the fixing member (144 or 184) is divided into two, and the light incident on these two spaces is converted into the first and second light transmission members (150a). 150b or 190a, 190b), respectively. The present invention is not limited to such an embodiment. The space in the fixing member may be divided into three or more, and the light respectively incident on these may be incident on three or more light transmission members. For example, in the case of the second embodiment, it is possible to change the amount of light incident on each divided space by providing a light-emitting surface dividing member that is one less than the number of divided spaces and arranging these members so as to be rotatable or movable. You can do it.

  The number of divided spaces may be different from the number of light transmission members. For example, the structure which divides | segments the space in a fixing member into two, and provides four light transmission members from 1st to 4th may be sufficient. In this case, for example, light incident on one of the divided spaces can be incident on the first and second light transmission members, and light incident on the other space can be incident on the third and fourth light transmission members. That's fine. Or the structure which divides | segments the space in a fixing member into four and provides two light transmission members may be sufficient. In this case, for example, light incident on two of the four spaces may be incident on one light transmission member, and light incident on the remaining two spaces may be incident on the other light transmission member.

  In the first to third embodiments, the example in which the optical fiber is used as the light guiding material has been described. The present invention is not limited to such an embodiment. Instead of the optical fiber, for example, a pipe in which aluminum having a high reflectance is vapor-deposited on the inner surface may be used as the first and second light transmission members. In this case, since the first and second light transmission members cannot be bent, a plurality of members having different shapes and lengths may be prepared according to the photographing application. For example, in the case of close-up photography, the length of the first and second light transmission members is the distance between the light exit surface of the electronic flash device attached to the camera and the first and second light output parts attached to the photographing lens. You just need to match. In the case of two-lamp illumination, the length of the first light transmission member is adjusted to the distance between one light stand and the camera (the electronic flash device attached to the camera), and the distance between the other light stand and the camera. The length of the second light transmission member is matched with the camera, and the camera may be fixed on the tripod.

  In the first to third embodiments, the example in which the ring-shaped light exit surface is formed by the first and second light output units 30a and 30b has been described. The present invention is not limited to such an embodiment. For example, the first and second light output units may be formed so that the light output surface obtained by combining the first and second light output units has a square frame shape, for example.

  As described in detail above, the present invention can be used greatly in the field of electronic flash devices.

It is a disassembled side view of the imaging | photography system in the 1st Embodiment of this invention. It is a front view of the electronic flash device in a 1st embodiment. It is a perspective view which shows schematic structure of the light movement part in 1st Embodiment. It is a cross-sectional schematic diagram of a 1st light emission part, a fixing member, and a 1st light transmission member in 1st Embodiment. It is a perspective view which shows the detail of the light output part and mounting member in 1st Embodiment. It is a perspective view which shows an example of the member for fixing the light output part on a light stand in 1st Embodiment. It is a circuit diagram which shows the principal part in the main-body part of the electronic flash apparatus in 1st Embodiment. In the imaging system of 1st Embodiment, it is a side view which shows the state which attached the fixing member to the main-body part of an electronic flash device, and was mounted | worn with the light output part to the imaging lens of the camera. It is a cross-sectional schematic diagram which shows schematic structure of the adapter for electronic flash apparatuses in the 2nd Embodiment of this invention. It is explanatory drawing which shows the detail of the one end side of the inside of a fixing member and a light transmission member in 2nd Embodiment. It is explanatory drawing which shows an example of another structure of the light emission surface division | segmentation member in 2nd Embodiment. It is a cross-sectional schematic diagram which shows schematic structure of the adapter for electronic flash apparatuses in the 3rd Embodiment of this invention. It is an external view which shows an example of the conventional electronic flash device for close-up photography.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Shooting system 12 Shooting lens 14 Camera 16 Electronic flash device 20 Main body part 22 Light moving part 24 Mounting member 30a First light output part 30b Second light output part 32a First light transmission member 32b Second light transmission member 34 Fixing member 40 1st light emission tube 42 1st light emission circuit 44 1st light emission part 46 2nd light emission tube 48 2nd light emission circuit 50 2nd light emission part 52 case 54 division member 60 division member 62a 1st space 62b 2nd space 70 protrusion 72 notch 76 recess 78 screw hole 80 fixing screw 82 rubber cushion 86 diffuser plate 88 mounting hole 92 fixing member 94 for stand 94 projection 96 screw hole 100 booster circuit 104 voltage level detection circuit 108 light emission amount control unit 110 information display unit 114 first trigger Circuit 116 First voltage doubler circuit 118 IGBT
122 Second trigger circuit 124 Second voltage doubler circuit 126 IGBT
140 Adapter for electronic flash device 144 Fixing member 150a First light transmission member 150b Second light transmission member 152 Opening portion 154 Light emitting portion 158 Light exit surface dividing member 160 Rotating shaft 162a First space 162b Second space 180 For electronic flash device Adapter 184 Dividing member 190a First light transmitting member 190b Second light transmitting member 192 Opening 198 Light exiting surface dividing member 202a First space 202b Second space 204 Attenuating filter 208 Groove Batt Battery C1 Main capacitor C2, C4 Trigger capacitor C3, C5 Capacitors D1, D2, D3, D4 Diodes R1, R2, R3, R4 Resistors T1, T2... Trigger coil

Claims (13)

A plurality of light emitting units that emit light;
A plurality of storage portions for respectively storing the plurality of light emitting portions;
A plurality of light transmitting members that receive the emitted light of one of the light emitting units that is different from each other on one end side and transmit the received light to the other end side;
A dividing unit that is provided between the plurality of storage units and reduces the overlap of light emitted from each light emitting unit and emits the light outside the storage unit;
Respectively disposed at the other end of the plurality of optical transmission members, a plurality of light output unit for irradiating the light transmitted to the other end side of the light transmitting member to the object,
An electronic flash device comprising: a light emission control unit that controls a light emission amount of each of the plurality of light emitting units for each of the light emitting units. The electronic flash device according to claim 1,
The plurality of light emitting units have a light exit surface for emitting emitted light,
An electronic flash device comprising: a fixing member that detachably fixes one end side of the plurality of light transmission members at a position on the traveling direction side of the emitted light with respect to the light exit surface. The electronic flash device according to claim 2 ,
The electronic flash device , wherein the fixing member includes a dividing member that divides an internal space of the fixing member so as to correspond to each of the plurality of light transmission members . In the electronic flash device according to any one of claims 1 to 3,
A plurality of the light output units, the mounting means for mounting along the outer periphery of the photographing lens at the tip of the barrel of the photographing lens of the camera;
When a plurality of the light output section is attached to the tip of the lens barrel of the photographing lens by said mounting means, the electronic flash device, wherein the light exit surface formed by a plurality of said light output section is ring-shaped . In the electronic flash device according to any one of claims 1 to 4,
The plurality of light transmission members are separated from each other,
An electronic flash device comprising fixing means for fixing the plurality of light output sections on a plurality of illumination stands, respectively. In the electronic flash device according to any one of claims 1 to 5,
The plurality of light transmission members include a material that reflects light therein, and transmits the light while reflecting light from the material. The electronic flash device according to any one of claims 1 to 6,
Wherein the plurality of each of the light emitting unit, an electronic flash device, wherein the maximum emission intensity is substantially equal. A housing portion that has an opening, is detachably mounted on the electronic flash device with the opening facing the light emitting surface of the light emitting portion of the electronic flash device, and covers the light emitting surface by the opening when mounted When,
The space in the housing part is arranged so that the radiated light of the light emitting part that is disposed in the housing part and enters the opening surface of the opening part travels on the opposite side to the opening surface in the housing part. A divided member to be divided into a plurality of parts;
The emitted light of the light emitting portion, the dividing member receiving respectively one end via one different one from each other of the plurality of divided spaces by a plurality of light transmitting member for transmitting the received light to the other side and ,
Wherein the plurality of respectively arranged on the other end side of the light transmission member, and a plurality of light output portions to be irradiated on the object with light transmitted to the other end side of the light transmitting member,
The splitting member is configured to change the ratio of the amount of incident light for each of the plurality of spaces when the emitted light of the light emitting unit incident on the opening surface enters the plurality of split spaces. Flash device adapter. The adapter for an electronic flash device according to claim 8,
The adapter for an electronic flash device, wherein the split member is arranged to be rotatable or movable so that the position of the split member on the opening surface side can be changed. The adapter for an electronic flash device according to claim 8,
An adapter for an electronic flash device, comprising: a neutral density filter disposed in a space divided by the dividing member. In the adapter for electronic flash devices according to any one of claims 8 to 10,
A plurality of the light output units, the mounting means for mounting along the outer periphery of the photographing lens at the tip of the barrel of the photographing lens of the camera;
An electronic flash device characterized in that when the plurality of light output portions are mounted on the tip of the lens barrel of the photographing lens by the mounting means, the light output surfaces formed by the plurality of light output portions are annular. Adapter. The adapter for an electronic flash device according to any one of claims 8 to 11,
The plurality of light transmission members are separated from each other,
An adapter for an electronic flash device, comprising fixing means for fixing the plurality of light output sections on a plurality of lighting stands, respectively. The adapter for an electronic flash device according to any one of claims 8 to 12,
The plurality of light transmission members have a material that reflects light therein, and transmit the light while reflecting the light by the material.

Images