JP2005215367A - Stroboscope device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stroboscope device realizing setting free from errors by improving operability for setting the light emitting state of a light emitting part. <P>SOLUTION: When a select dial 15 is consecutively operated in any one direction by a user, two-flash light emission that an A flash 4a and a B flash 4b are made to emit light simultaneously is switched to single-flash light emission that only either the A flash 4a or the B flash 4b is made to emit the light. Then, the display 13e of the ratio of light quantity performed on a display panel 13 is switched from the ratio of the synthetic emitted light quantity of the A flash 4a and the B flash 4b to that in full light emission to the ratio of light quantity in the single-flash light emission to that in full light emission. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a strobe device, and more particularly to a strobe device having a plurality of light emitting units and capable of appropriately setting the light emission state of each light emitting unit.

Some camera strobe devices have been proposed that can set the light emission state of a light emitting unit such as a ratio of light emission amounts of a plurality of light emitting units, a so-called light emission ratio, and a light emission amount of a plurality of light emitting units. For example, Patent Document 1 proposes a strobe system in which the light emission ratios of a plurality of groups of light emitting units can be set, and the set light emission ratios can be visually recognized by marks displayed on a liquid crystal display. In this manner, by making it possible to set the light emission ratios of a plurality of light emitting units, it is possible to perform flash photography with an appropriate shadow applied to the subject.
JP 2000-89305 A

  However, when the user manually sets the light emission state of the light emitting unit, particularly when the user manually sets the light emission state of the light emitting unit in the so-called “manual light emission mode” in which the flash is not automatically adjusted. There are few setting methods that are easy for the user to understand, and the operability is not taken into consideration. For this reason, there exists a possibility that a user may be confused about a setting or may perform an incorrect setting sometimes. Also in the above-mentioned patent document 1, no particular mention is made of the operability at the time of such setting.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a strobe device that improves operability at the time of setting a light emission state of a light emitting unit and can be set without error.

  In order to achieve the above object, a strobe device according to a first aspect of the present invention includes a control unit detachably attached to a camera body, two light emitting units whose light emission states are controlled by the control unit, and the control unit. An operation member provided on the back surface of the light emitting device, a light emission ratio setting means for setting the light emission ratio of the two light emitting units according to the operation of the operation member, and the light emission ratio setting means can be set by the operation of the operation member And switching means for switching so that only one of the two light emitting portions emits light when the operation member is further operated in a state where the limit light emission ratio is set. And

  In order to achieve the above object, the strobe device according to the second aspect of the present invention includes two light emitting units, and the two light emitting units for emitting both the two light emitting units together and the two light emitting units. In a strobe device that can selectively switch between single-flash emission that emits only one of them, in the two-flash emission, the emission ratio of the two light-emitting units can be set, and the operation for setting the emission ratio is performed. Switching from the two-light emission to the single-light emission is performed by continuous operation of the operation member to be performed.

  In order to achieve the above object, the strobe device according to the third aspect of the present invention can set the light emission ratio of the two light emitting units when the two light emitting units emit light together. In the strobe device, an operation member that performs an operation to increase or decrease any one of the light emission ratios, and the number of times that the ratio is increased by the operation members is greater than the number of times that the ratio is decreased by a predetermined number of times. And switching means for switching from the two-light emission to the single-light emission in which only one of the two light-emitting units emits light.

  According to the first to third aspects, in the strobe device having two light emitting units, the operation of shifting from the state in which the two light emitting units emit light simultaneously to the state in which only one light emitting unit emits light is performed in two ways. Since the operation can be performed continuously by extending the setting operation of the light emission ratio of the light emitting unit, the operation is easy.

  ADVANTAGE OF THE INVENTION According to this invention, the operativity at the time of the setting of the light emission state of a light emission part can be improved, and the strobe apparatus which can be set without an error can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a strobe device according to an embodiment of the present invention and a camera 100 in which the strobe device is detachable. The camera 100 is not particularly limited as long as it has a mechanism (for example, a hot shoe mechanism) for mounting the strobe device, and the internal configuration thereof may be a conventionally known one. Therefore, only the strobe device will be described hereinafter.

  That is, the strobe device according to an embodiment of the present invention attaches the macro twin strobe light emitting unit 4 to the connection unit 2a and the connection unit 2b provided in the control unit 1 that performs charging control and light emission control for the strobe. Consists of. Although it is possible to attach a light emitting unit other than the macro twin strobe light emitting unit 4 to the control unit 1, the description will be continued hereinafter assuming that the macro twin strobe light emitting unit 4 is installed in the control unit 1.

  Here, the macro twin strobe light emitting unit 4 is provided with two light emitting units (referred to as A lamp 4a and B lamp 4b, respectively). These can be attached to the control unit 1 at the same time, or only one of them can be attached. In particular, when these two light emitting units are mounted at the same time, the left and right light emitting states of the A lamp 4a and the B lamp 4b can be set, and the two light emitting units can emit light. Specifically, in this embodiment, it is possible to set the right and left two emission ratios of the A lamp 4a and the B lamp 4b and the two right and left combined emission amounts of the A lamp 4a and the B lamp 4b. These settings will be described later in detail.

  FIG. 2 is a block diagram showing an internal configuration of the strobe device including the control unit 1 and the A lamp 4a and the B lamp 4b. Note that the configuration shown in FIG. 2 is a minimum configuration for explaining the present embodiment, and other configurations may be added to the configuration of FIG. 2 as necessary.

  In FIG. 2, the A lamp 4a and the B lamp 4b are each composed of an arc tube and a light emitting circuit. The arc tube and the light emitting circuit may have a conventionally well-known configuration and are different from the essence of the present embodiment, and will be described briefly here. The arc tube is an arc tube for strobe light emission. For example, a xenon discharge tube is used. The light emitting circuit includes a trigger circuit for causing the arc tube to discharge light, and discharges the arc tube with a predetermined amount of light according to a light emission instruction from the control unit 1.

  Next, the control unit 1 will be described. A CPU 11 that controls the entire flash device including the control unit 1 is provided inside the control unit 1. That is, the CPU 11 as a switching unit controls the light emission control circuit 12 or controls the display of the liquid crystal display circuit 13 according to the operation of various operation members by the user.

  The light emission control circuit 12 includes a booster circuit that boosts the power supply voltage to a predetermined high voltage, a charging circuit that charges energy for strobe light emission based on the boosted voltage, and the like. Here, the charging circuit includes two capacitors, a capacitor for storing energy for causing the A lamp 4a to emit light and a capacitor for storing energy for causing the B lamp 4b to emit light. Can be recharged.

  The liquid crystal display circuit 13 includes an external liquid crystal display panel (hereinafter referred to as a display panel) provided on the back surface of the control unit 1, a display control circuit that performs display control of the display panel, and the like. Various displays are performed according to the following. This display will be described in detail later.

  The input switch group 14 serving as the light emission ratio setting means is a switch group that is turned ON / OFF depending on the operation state of various operation members provided on the back surface of the control unit 1. Here, as an operation member provided on the back surface of the control unit 1, a select dial 15 as an operation member for setting two right and left emission ratios of the A lamp 4a and the B lamp 4b, and a right and left 2 of the A lamp 4a and the B lamp 4b. A select dial 16 for setting one combined light emission amount, a mode button 17 for switching the flash mode between an automatic light emission (TTL AUTO) mode and a manual light emission (MANUAL) mode, an auxiliary light source for AF (not shown) A lamp (LAMP) button 18 for emitting light, a test (TEST) button 19a for performing test light emission, an ON / OFF button 20 for turning on / off the power of the strobe device, and a backlight of an external liquid crystal display panel There is a light button 21 for turning on / off. The rotation amount of the select dials 15 and 16 is detected by the CPU 11 counting the number of pulses output from an encoder that outputs pulses corresponding to the amount of rotation operation of the select dials 15 and 16 by the user. However, since this is a well-known technique, detailed description is omitted.

  In addition, the charge (CHARGE) display lamp 19b is a lamp for notifying the user that charging for strobe light emission has been completed, and the AUTOCHECK display lamp 22 operates normally in the AUTO mode. It is a lamp for notifying the user that the

  Here, in this embodiment, in order to improve the operability when manually setting the light emission states of the A lamp 4a and the B lamp 4b, the arrangement of the select dials 15 and 16 and the display on the display panel 13 are improved. Is devised.

  FIG. 3 is a rear view of the control unit 1. As shown in FIG. 3, on the back surface of the control unit 1, the display panel 13, the select dial 15, the select dial 16, the MODE button 17, the LAMP button 18, the TEST button 19a, the ON / OFF button 20, and the LIGHT button are provided. Various operation members 21 and various display lamps such as a CHARGE display lamp 19b and an AUTOCHECK display lamp 22 are exposed. In FIG. 3, the TEST button 19 a and the CHARGE display lamp 19 b can be used as indicated by reference numeral 19. That is, the TEST button 19a is made of a light-transmitting member, and the CHARGE display lamp 19b is arranged behind the TEST button 19a, so that the emitted light from the CHARGE display lamp 19b is emitted from the TEST button 19a. It can be visually recognized through 19a. Of course, the TEST button 19a and the CHARGE display lamp 19b may be arranged separately.

  Here, in the present embodiment, a select dial 15 that sets the left and right light emission ratios of the A lamp 4a and the B lamp 4b, and a select dial 16 that sets the left and right combined light emission amounts of the A lamp 4a and the B lamp 4b, As shown in FIG. 3, these are arranged in parallel with the horizontal direction at the lower back of the control unit 1. That is, the select dial 15 is arranged at the position of the user's left thumb when the user holds the camera body with both hands as shown in FIG. The select dial 16 is arranged at a position that can be easily reached by slightly shifting the left thumb.

  By arranging the select dials 15 and 16 in this way, the user can easily operate the select dials 15 and 16 without re-setting the camera body. In addition, since the select dials 15 and 16 are arranged on the back surface of the control unit 1 as in the present embodiment, the select dials 15 and 16 can be used even when shooting with the camera body facing downward, for example, in macro shooting. 16 is easy to operate. Further, since the display panel 13 is also provided on the back of the control unit 1, the display can be seen even when the camera body is faced down.

  Further, there are provided two rotary operation members, a select dial 15 for setting the left and right light emission ratios of the A light 4a and the B light 4b, and a select dial 16 for setting the left and right combined light emission amounts of the A light 4a and the B light 4b. Thus, when setting the left and right light emission states of the A lamp 4a and the B lamp 4b, the setting is performed in a manner that is intuitively understandable by changing the ratio of the two left and right light emission amounts of the A lamp 4a and the B lamp 4b. The method of setting the left and right light emission states of the A light 4a and the B light 4b is easier for the user than setting the left and right light emission amounts of the A light 4a and the B light 4b. In addition, since the operation method is simple by simply rotating the dial, there is little possibility that the user will be confused by the operation.

  Next, the display that is made on the display panel 13 when the user actually sets the left and right light emission ratios of the A lamp 4a and the B lamp 4b will be described. In the example described below, the light emitting unit mounted on the control unit 1 is the macro twin strobe light emitting unit 4 and the strobe mode is the MANUAL mode.

  FIG. 5A is a diagram showing a display made on the display panel 13 in an initial state when two right and left light emission ratios of the A lamp 4a and the B lamp 4b are set. In this embodiment, the left and right light emission ratios of the A lamp 4a and the B lamp 4b in the initial state are A lamp: B lamp = 1: 1, and the light emission amount in the initial state (here, the A lamp 4a and the A lamp 4a). The left and right combined light emission amounts of the B light 4b) are ¼ light emission amounts when both the A light 4a and the B light 4b are fully emitted.

  In such an initial state, the display panel 13 includes a light emitting unit display 13a, a strobe mode display 13b, light emission ratio displays 13c and 13d, and a light amount ratio display 13e. Here, the light emitting unit display 13a is a display indicating the type of the light emitting unit mounted on the control unit 1, and the strobe mode display 13b is a display indicating the current strobe mode. Further, the light emission ratio displays 13c and 13d are displays indicating the left and right light emission ratios of the A lamp 4a and the B lamp 4b, and the light quantity ratio display 13e is the two left and right combined light emission amounts of the A lamp 4a and the B lamp 4b. It is a display to show. In FIG. 5A, the combined left and right light emission amounts of the A lamp 4a and the B lamp 4b are compared with the light emission amount when both the A lamp 4a and the B lamp 4b are fully emitted (full emission). (Referred to as the ratio of light quantity to quantity).

Here, in the present embodiment, the left and right light emission ratios of the A lamp 4a and the B lamp 4b are displayed in two types of display forms, a numerical value display 13c and an index display 13d.
The numerical value display 13c is a display in which the left and right light emission ratios of the A light 4a and the B light 4b are represented by actual numerical values. In the example of FIG. 5A, the numerical value on the left indicates the A lamp 4a, and the numerical value on the right indicates the B lamp 4b. On the other hand, the index display 13d is a graphical display in which the left and right light emission ratios of the A lamp 4a and the B lamp 4b are represented by an axis display of the light emission ratio and a bar display composed of three dots. Here, in the example of FIG. 5A, the dot in the middle of the bar display indicates the two left and right emission ratios of the A lamp 4a and the B lamp 4b. The number of dots for bar display is not limited to three.

  That is, if only the numerical display 13c is displayed on the display panel 13, the left and right light emission ratios of the A lamp 4a and the B lamp 4b are represented as accurate numerical values. The A lamp 4a indicated by these numerical values It is difficult to intuitively understand the actual ratio between the left and right light emission ratios of the B lamp 4b. On the other hand, if only the indicator display 13d is performed, it is easy to intuitively understand the ratio of the left and right light emission ratios of the A light 4a and the B light 4b, but the accurate A light 4a and B light 4b It is difficult for the user to understand the numerical values of the left and right light emission ratios.

  Therefore, in the present embodiment, the numerical display 13c and the index display 13d are simultaneously performed so that the balance between the left and right light emission amounts of the A lamp 4a and the B lamp 4b can be intuitively understood by the index display 13d. After that, the numerical value display 13c enables the accurate numerical values of the right and left light emission ratios of the A lamp 4a and the B lamp 4b to be confirmed. Thereby, the user can set the left and right light emission ratios of the A lamp 4a and the B lamp 4b more easily.

  When the user rotates the select dial 15 counterclockwise in the initial state in which the above display is made, that is, when the user rotates the select dial 15 so that the left thumb moves to the right in the state of FIG. The left and right light emission ratios of 4a and B lamp 4b change. At this time, on the display, as shown in FIG. 5B, the numerical value of the numerical display 13c changes so that the ratio of the left and right light emission ratios of the A lamp 4a and the B lamp 4b on the B lamp side increases. The bar display of the index display 13d moves to the right by one dot. In other words, in this embodiment, the operation direction of the user's left thumb and the movement direction of the bar display are made to coincide. In this way, by performing a display in which the user's dial operation direction and the bar movement direction are matched, the user can set the left and right light emission ratios of the A lamp 4a and the B lamp 4b more intuitively and easily. It can be carried out.

  In addition, when the user rotates the select dial 16 counterclockwise, the selector dial 16 is rotated clockwise so that the numerical value of the light amount ratio with respect to the full light emission amount of the A lamp 4a and the B lamp 4b increases. The numerical value of the light amount ratio display 13e changes so that the numerical value of the light amount ratio with respect to the full light emission amount of the A lamp 4a and the B lamp 4b is reduced, but the illustration is omitted here.

  Further, when the select dial 15 is further rotated counterclockwise from the state of FIG. 5B, the ratio of the left and right light emission ratios of the A lamp 4a and the B lamp 4b on the B lamp side further increases. On the display, as shown in FIG. 5C, the numerical value on the B lamp side of the numerical display 13c further increases, and the bar display of the indicator display 13d further moves to the right. Thereafter, similarly, by sequentially rotating the select dial 15 counterclockwise, the numerical value on the B light side of the numerical display 13c sequentially increases and the bar display of the indicator display 13d sequentially moves to the right. . Such display is performed until A lamp: B lamp = 1: 8 shown in FIG.

  When the select dial 15 is rotated clockwise, the numerical value on the numerical display 13c changes so that the ratio of the left and right light emission ratios of the A lamp 4a and the B lamp 4b on the A lamp side increases. The bar display of the index display 13d is moved to the left by one dot.

  That is, in the present embodiment, the ratio of the left and right light amounts of the A light 4a and the B light 4b is changed in a state where the left and right combined light amounts of the A light 4a and the B light 4b are maintained. On the contrary, it is possible to change the combined left and right light emission amounts of the A light 4a and the B light 4b while maintaining the ratio of the left and right light emission amounts of the A light 4a and the B light 4b. ing. Based on the left and right emission ratios of the A lamp 4a and the B lamp 4b and the two combined emission quantities set in this way, the left and right emission amounts (guide numbers) of the A lamp 4a and the B lamp 4b are set. Is done.

  When the select dial 15 is further rotated counterclockwise in the state of FIG. 5D, a single lamp that emits only the B lamp 4b from the two lamps that simultaneously emit the left and right lights of the A lamp 4a and the B lamp 4b. Switching to light emission is performed. The display at this time is as shown in FIG. Here, in the case of single lamp light emission, since there are no two right and left light emission ratios of the A lamp 4a and the B lamp 4b, the light emission ratio displays 13c and 13d are not displayed.

  Here, as described above, the light amount ratio with respect to the full light emission amount displayed on the light amount ratio display 13e is a ratio based on the light emission amount when the left and right two of the A lamp 4a and the B lamp 4b are fully emitted. Yes, it is not based on the amount of light emitted when only the B lamp 4b is fully lit. Therefore, the light quantity ratio display displayed in the case of the two-light emission in FIGS. 5A to 5D cannot be applied to the single-light emission in FIG. 5E as it is. For this reason, in this embodiment, when shifting from two-lamp light emission to single-lamp light emission, the light quantity ratio display is switched from the two-light emission light quantity ratio display to the single lamp emission light quantity ratio display. For example, in FIG. 5 (e), the light amount ratio with respect to the full light emission amount is switched from a value 1/4 when the two lights are emitted to a value 1/2 when the B lights 4b are single light emission. In addition, although it changes from 1/4 to 1/2 on the display, the light emission amount of the B lamp 4b is the same as the combined light emission amount at the time of two light emission.

  As described above, in this embodiment, switching from the two-light emission mode of the A lamp 4a and the B lamp 4b to the single lamp emission mode of only the B lamp 4b is performed on the left and right sides of the A lamp 4a and the B lamp 4b. It can be continuously performed by the same operation as the setting operation of the light emission ratio. That is, the number of times the user has increased the ratio of the left and right light emission ratios of the A lamp 4a and the B lamp 4b on the B lamp side is larger than the predetermined number of times than the number of times of decreasing the ratio on the B lamp side. When the same operation as that for further increasing the ratio on the B lamp side is performed after reaching the setting limit ratio of the left and right light emission ratios of the A lamp 4a and the B lamp 4b in the embodiment, the A lamp 4a And the two-light emission mode of the B lamp 4b are switched to the single-light emission mode of only the B lamp 4b. It is also possible to return to the two-light emission mode by rotating the select dial 15 clockwise from the single-light emission mode of only the B lamp 4b.

  The above explanation is for the case where the select dial 15 is rotated in the counterclockwise direction. However, when the select dial 15 is rotated in the clockwise direction, the right and left two lights of the A lamp 4a and the B lamp 4b are used. The numerical value on the numerical display 13c is changed so that the ratio on the A lamp side in the light emission ratio is increased, and the bar display on the index display 13d is moved to the left by one dot. When the select dial 16 is rotated clockwise, the numerical value of the light amount ratio display 13e changes so that the numerical value of the light amount ratio with respect to the full light emission amount increases. Further, by rotating the select dial 15 in the clockwise direction, it is possible to emit a single lamp only from the A lamp 4a.

  Next, when the combination of the right and left light emission ratios of the A lamp 4a and the B lamp 4b set by the user and the left and right combined light emission amounts of the A lamp 4a and the B lamp 4b is inappropriate, the display panel 13 The warning display performed above will be described. Here, an inappropriate combination of the left and right emission ratios of the A lamp 4a and the B lamp 4b and the left and right combined emission amounts of the A lamp 4a and the B lamp 4b is, for example, a capacitor in the emission control circuit 12 A combination outside the control range determined by the capacity, a combination outside the control range determined by the performance of the light control sensor on the camera 100 side, CCD, or the like.

  For example, as shown in FIG. 6A, the light quantity ratio with respect to the full light emission amount is set to 1/512 (minimum combined light emission amount), and the left and right light emission ratios of the A light 4a and the B light 4b are A light: When the B light = 1: 8 is set, a warning display is performed in which the numerical display 13c and the index display 13d of the left and right light emission ratios of the A light 4a and the B light 4b are blinked. In this case, since the two left and right combined light emission amounts of the A light 4a and the B light 4b are set to the minimum, it is not possible to make a difference in the light emission amounts between the A light 4a and the B light 4b. Both lamps 4b can only emit light with a minimum light emission amount. Further, as shown in FIG. 6B, the light intensity ratio with respect to the full light emission amount is set to 1/1 (maximum combined light emission amount), and the left and right light emission ratios of the A lamp 4a and the B lamp 4b are A lamp: B A warning is also displayed when the lamp is set to 1: 8. In this case, the left and right two combined emission amounts of the A lamp 4a and the B lamp 4b are set to the maximum light amount, and the left and right two lights of the A lamp 4a and the B lamp 4b are caused to emit light using all the energy stored in the capacitor. It is. Also in this case, it is not possible to make a difference in light emission amount between the A lamp 4a and the B lamp 4b.

  FIG. 7 is a diagram for explaining such an improper combination. The left and right light emission ratios of the A lamp 4a and the B lamp 4b, the light quantity ratio with respect to the full light emission amount, and the respective light emission of the A lamp 4a and the B lamp 4b. It is a figure which shows the relationship of quantity (guide number). Here, the numerical value of GNA in FIG. 7 indicates the guide number of the A lamp 4a, and the numerical value of GNB indicates the guide number of the B lamp 4b.

  In the shaded area 200 of FIG. 7, the combination of the left and right light emission ratios of the A lamp 4a and the B lamp 4b and the light quantity ratio with respect to the full light emission amount is inappropriate. That is, the guide numbers of the A lamp 4a and the B lamp 4b determined by the right and left two emission ratios of the A lamp 4a and the B lamp 4b set by the user and the light quantity ratio with respect to the full emission amount are within the shaded area 200. In some cases, a warning display as shown in FIGS. 6A and 6B is performed. In the present embodiment, when such an inappropriate combination is set, the right and left light emission ratios of the A lamp 4a and the B lamp 4b or the A lamp are set so that these combinations are appropriate. At least one of the left and right combined light emission amounts of 4a and B lamp 4b is corrected.

  Such correction is performed, for example, by correcting the right and left two emission ratios of the A lamp 4a and the B lamp 4b while maintaining the combined left and right light emission amounts of the A lamp 4a and the B lamp 4b set by the user. It ’s fine. For example, in the case of correcting the example of FIG. 6A, a state in which the two left and right combined light emission amounts (a light amount ratio 1/512 with respect to the full light emission amount) of the A lamp 4a and the B lamp 4b set by the user is maintained. Thus, the right and left light emission ratios of the A lamp 4a and the B lamp 4b are corrected so that appropriate exposure can be obtained. That is, in the example of FIG. 6A, the left and right light emission ratios of the A lamp 4a and the B lamp 4b are 1: 1. Similarly, in the case of correcting the example of FIG. 6B, the two left and right combined light emission amounts (a light amount ratio to the full light emission amount 1/1) set by the user are maintained. The right and left light emission ratios of the A lamp 4a and the B lamp 4b are changed to 1: 1 so that appropriate exposure can be obtained in the state.

  Further, the correction may be performed based on the concept as shown in FIG. This is to correct the left and right light emission ratios of the A light 4a and the B light 4b after changing the combined light emission amount of the left and right lights of the A light 4a and the B light 4b within the range of the amount of light allowed on the camera side. That's it. For example, in the case of a silver-salt camera, the range of the amount of light allowed on the camera side is within the range of the amount of light set according to the type of silver-salt film, and in the case of a digital camera, the type of CCD It is within the range of the light quantity set according to. Information regarding these light quantity ranges is communicated from the camera side to the flash device.

  For example, in the case of correcting the example of FIG. 6A, the level allowed on the camera side while maintaining the left and right light emission ratio 1: 8 of the A lamp 4a and the B lamp 4b set by the user. After increasing the left and right combined light emission amounts of the A light 4a and the B light 4b (in the example, the light amount ratio 1/256 to the full light emission amount), the left and right combined light emission amounts of the A light 4a and the B light 4b and the A light The right and left two emission ratios of the A lamp 4a and the B lamp 4b are corrected so that the combination of the left and right emission ratios of the 4a and the B lamp 4b becomes appropriate. When the example of FIG. 6B is corrected, the level allowed on the camera side while maintaining the left and right light emission ratio 1: 8 of the A lamp 4a and the B lamp 4b set by the user. After reducing the left and right combined light emission amounts of the A light 4a and the B light 4b (in the example, the light amount ratio of the full light emission amount to the full light emission amount is 1 / 1.5), the left and right two light sources of the A light 4a and the B light 4b are The left and right light emission ratios of the A light 4a and the B light 4b are corrected so that the combination of the combined light emission amount and the left and right light emission ratios of the A light 4a and the B light 4b becomes appropriate. According to such an idea, even in the case of FIGS. 6A and 6B, the left and right light emission ratios of the A lamp 4a and the B lamp 4b are not changed to 1: 1, and the A lamp A difference can be made between the light emission amount of 4a and the light emission amount of the B lamp 4b.

  As described above, according to the present embodiment, two select dials are arranged side by side at a position where the user can easily operate, that is, at the lower part of the back of the control unit, and the two select dials are used. Since it is now possible to set the left and right combined emission amounts of the lamp 4a and the B lamp 4b and the left and right emission ratios of the A lamp 4a and the B lamp 4b, the two right and left emission amounts of the A lamp 4a and the B lamp 4b can be set. It is easier to understand than setting each one.

  Further, on the display panel 13, a numerical display indicating the left and right light emission ratios of the A light 4a and the B light 4b with actual numerical values and a balance between the left and right light emission ratios of the A light 4a and the B light 4b in a graphical display. Since the indicator display is performed, it is possible to intuitively understand the set left and right light emission ratios of the A lamp 4a and the B lamp 4b, and it is also easy to understand the actual numerical values.

  In addition, since the single light emission and the two light emission of the light emitting unit can be switched only by rotating one select dial, the operability is good.

  In addition, when an inappropriate operation is performed by the user, a warning is displayed so that the user can easily understand. Furthermore, when an inappropriate operation is performed by the user, control is performed not only to display a warning but also to emit strobe light in an appropriate state, which is convenient.

  Although the present invention has been described based on the above embodiments, the present invention is not limited to the above-described embodiments, and various modifications and applications are naturally possible within the scope of the gist of the present invention. For example, the display form of the index display 13d is merely an example, and various changes can be considered. For example, as shown in FIG. 9A, if the left and right light emission ratios of the two light emitting units are displayed in a vertically long bar, the user recognizes that there is a difference between the left and right light emission ratios of the two light emitting units. It's easy to do. Further, the index display 13d may be a ring display as shown in FIG.

  Further, the above-described embodiments include various stages of the invention, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be extracted as an invention.

1 is an external perspective view of a strobe device according to an embodiment of the present invention. It is a block diagram shown about the internal structure of a strobe device. It is a rear view of a control part. It is a figure for demonstrating arrangement | positioning of a select dial. It is the figure shown about the display form made | formed on a liquid crystal panel at the time of the setting of two right and left light emission ratios. It is the figure shown about the warning display. It is a figure shown about the 1st example for demonstrating the correction | amendment when improper setting is made. It is a figure shown about the 2nd example for demonstrating the correction | amendment when improper setting is made. It is a figure shown about the modification of an index display.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Control part, 2a, 2b ... Connection part, 4a ... A light, 4b ... B light, 11 ... CPU, 12 ... Light emission control circuit, 13 ... Liquid crystal display circuit (display panel), 13a ... Light emission part display, 13b ... Strobe mode display, 13c ... Numerical display, 13d ... Indicator display, 13e ... Light intensity ratio display, 14 ... Input switch group, 15, 16 ... Select dial, 17 ... Mode (MODE) button, 18 ... Lamp (LAMP) button, 19a ... TEST button, 19b ... CHARGE display lamp, 20 ... ON / OFF button, 21 ... LIGHT button, 22 ... AUTO CHECK display lamp

Claims (4)

A control unit that is detachable from the camera body,
Two light emitting units whose light emission states are controlled by the control unit;
An operation member provided on the back surface of the control unit;
A light emission ratio setting means for setting a light emission ratio of the two light emitting units according to the operation of the operation member;
When a further operation of the operation member is performed in a state where a limit light emission ratio that can be set by the light emission ratio setting means is set by operation of the operation member, only one of the two light emitting units is performed. Switching means for switching to emit light,
A strobe device comprising: A strobe device comprising two light-emitting units and capable of selectively switching between two-lamp light emission that emits light from both of the two light-emitting units and single-light emission that emits only one of the two light-emitting units.
In the two-light emission, the emission ratio of the two light emitting units can be set,
A strobe device that performs switching from the two-lamp light emission to the single-lamp light emission by continuous operation of an operation member that performs the setting operation of the light emission ratio.   Switching from the two-lamp emission to the single-lamp emission is performed by further operating the operation member when the emission ratio set by the operation for setting the emission ratio is the limit of the emission ratio that can be set in the two-lamp emission. The strobe device according to claim 2, wherein the strobe device is performed in the event of a failure. In a strobe device that can set the light emission ratio of these two light emitting parts when two lamps emit light together.
An operation member for performing an operation of increasing or decreasing any one of the above-mentioned light emission ratios;
A single lamp that causes only one of the two light emitting units to emit light from the two lamps when the number of times the ratio is increased by the operation member is a predetermined number of times greater than the number of times the ratio is decreased. Switching means for switching to light emission;
A strobe device comprising:

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