JP2009109665A - Optical selection irradiation device for camera photographing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact optical selection irradiation device for camera photographing which is capable of selectively fulfilling a flash-light irradiation function and a continuous illumination function for an object. <P>SOLUTION: The optical selection irradiation device for camera photographing 1 includes: an annular base body 2 which has both sides selectively and detachably attached to the outer circumference of the lens barrel part 32 of a camera 31; an annular light emitting tube 4 which is arranged inside the front surface of the annular base body 2 and emits flash light; an annular light emitting element group 7 which is arranged inside the rear surface of the annular base body 2 and emits illumination light; and a light emission control means 3 which includes a housing part 16 which is detachably attached to the shoe part 33 of the camera 31 and has a housing-side terminal coming in contact with the terminal of the shoe part 33, a strobe circuit part which is incorporated in the housing part 16 and obtains the shutter signal of the camera 31 to cause the annular light emitting tube 4 to emit the flash light in synchronization with the shutter signal, an illumination circuit part which lights the annular light emitting element group 7, a battery part which supplies power to the strobe circuit part and the illumination circuit part, and a switching part which switches the operations of the strobe circuit part and the illumination circuit part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light selective irradiation device, and more particularly, to a light selective irradiation device for camera photographing that selectively performs flash irradiation on a subject and continuous illumination of the subject.

  As is well known, a ring strobe that emits flash light, a ring light that continuously illuminates a subject, and the like are used as auxiliary light sources for camera photography.

  However, in the past, most of them have only one function of a ring strobe or a ring light, and there is no auxiliary light source in which these are simultaneously incorporated as an integrated structure and used appropriately.

  In recent years, LEDs (light emitting diodes) have been frequently used as light sources for ring lights. However, in the case of ring lights using LEDs, the amount of emitted light is less than that of xenon lamps used in strobes, so the shooting conditions Depending on the situation, you may want to use a strobe.

  When an LED is to be incorporated into the ring strobe described above, the LED is disposed around a ring-shaped discharge tube, but this increases the overall shape of the ring strobe.

  In addition, if an LED is to be incorporated inside the ring strobe, the arrangement relationship between the ring-shaped discharge tube and the LED becomes extremely difficult.

  Thus, in the past, there is currently no compact camera-selective light selective irradiation device that can selectively perform the flash (strobe light) irradiation function to the subject and the continuous illumination function of the subject. It is.

  Patent Document 1 proposes a camera lighting ring light having a configuration in which a plurality of LED elements are circularly arranged in an annular case and a dry battery as a power source is mounted.

Also in the case of the ring light having the configuration of Patent Document 1, if the ring strobe function is to be incorporated, it is inevitable that the overall shape increases.
JP 2003-177454 A

  The problem to be solved by the present invention is that there is no light-selective irradiation device for camera photographing having a compact configuration capable of selectively exhibiting a flash (strobe light) irradiation function to a subject and a continuous illumination function of the subject. It is.

  The light selective irradiating device for camera photographing according to the present invention includes an annular base body having light transmission specifications on both front and back side surfaces that are selectively and detachably attached to the outer periphery of the lens barrel portion of the camera, and an inner surface side of the annular base body. An annular light emitting tube or a plurality of straight tubes that emit flashlight, an annular light emitting element group that emits illumination light arranged inside the back surface of the annular substrate, the annular light emitting tube or a plurality of straight tubes, and an annular light emission. And a light emission control means for controlling the light emission operation of the element group.

  According to the first aspect of the present invention, an annular light emitting tube or a plurality of straight tubes that emit flash light is arranged on the inside of the surface side of the annular base that is selectively attached to the outer periphery of the lens barrel of the camera. An annular light emitting element group that emits illumination light is disposed inside the back surface side, and an annular light emitting tube or a plurality of straight tubes, and a light emission control means for controlling the light emission operation of the annular light emitting element group are provided. It is possible to provide a light irradiating device for photographing a camera having a compact configuration capable of selectively exhibiting a flash (strobe light) irradiation function to a subject and a continuous illumination function of the subject by front and back replacement.

  According to the second aspect of the present invention, the same structure as that of the first aspect of the present invention is provided, and the light emission control means is detachably attached to the shoe part of the camera and contacts the terminal of the shoe part. A shutter signal of the camera is acquired through a housing portion having a terminal and a housing-side terminal that is built in the housing portion, and an annular light emitting tube or a plurality of straight tubes are emitted in a flashing state in synchronization with the shutter signal. A strobe circuit unit, a lighting circuit unit that controls lighting of the annular light emitting element group built in the housing unit, a strobe circuit unit, a battery unit that supplies power to the lighting circuit unit, a strobe circuit unit, and a lighting circuit unit Since it has a configuration that includes a switch unit that switches operations, the flash (strobe light) irradiation function to the subject and the continuous illumination function of the subject can be selected by switching the front and back of the annular substrate and switching the switch unit It is possible to provide a camera for photographing light selective irradiation apparatus compact structure capable of exhibiting the.

  According to the third aspect of the present invention, the same effect as that of the second aspect of the invention can be achieved, and an annular reflecting mirror is built in the back side of the annular light emitting tube or the plurality of straight tubes, and the back surface of the annular light emitting element group. Built-in annular reflector on the side, and also equipped with a dimming volume that adjusts the amount of light emitted by the annular light emitting element group, so that the subject is illuminated more brightly with flashlight and the subject is illuminated more brightly with illumination light Thus, it is possible to provide a camera-capturing light selective irradiating device that can perform each photographing and can adjust the amount of illumination light applied to the subject.

  An object of the present invention is to provide a light-selective irradiation device for camera photographing having a compact configuration capable of selectively exerting a flash (strobe light) irradiation function on a subject and a continuous illumination function of the subject.

  The light selective irradiating device for camera photographing according to the present invention includes an annular base body having light transmission specifications on both front and back side surfaces that are selectively and detachably attached to the outer periphery of the lens barrel portion of the camera, and an inner surface side of the annular base body. An annular light emitting tube or a plurality of straight tubes that emit flashlight, an annular light emitting element group that emits illumination light arranged inside the annular base, and a shoe portion of the camera are detachably mounted. And a housing part provided with a housing side terminal that contacts the terminal of the shoe part, and a shutter signal of the camera is acquired through the housing side terminal while being incorporated in the housing part, and the annular arc tube or a plurality of straight lines Required for a strobe circuit unit that emits light in a flash state in synchronization with the shutter signal, an illumination circuit unit that controls lighting of the annular light emitting element group built in the housing unit, and the strobe circuit unit and the illumination circuit unit of A battery unit for performing power supply, the flash circuit, and achieve the above object by the configuration having a switching unit that performs operation switching of the lighting circuit unit, and the light emission control means comprising a a.

  Hereinafter, a camera photographing light selective irradiation apparatus 1 according to an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the camera selective light irradiation device 1 according to the present embodiment is selectively attached to the outer periphery of a lens barrel portion 32 of a camera 31 such as a digital camera in a detachable manner. The inner base 2 has a hollow interior 2 with light transmission specifications on both flat front and back surfaces, and light emission control means 3 that is detachably attached to the shoe portion 33 of the camera 31. The shoe part 33 is provided with a terminal 34.

  Further, the camera 31 includes a shutter 35. When the operator presses the shutter 35 and shoots a subject, a shutter signal is supplied to the terminal 34 in conjunction with the pressing of the shutter 35. Yes.

  The annular base 2 is provided with a circular hole 2a to be fitted into the lens barrel 32 at the center thereof, the annular base 2 is mounted on the outer periphery of the lens barrel 32, and is provided on the inner periphery of the circular hole 2a. By engaging the engaging protrusion 2b with the engagement receiving portion provided on the outer periphery of the lens barrel portion 32, the engagement protrusion 2b can be fitted to the outer periphery of the lens barrel portion 32 exactly.

  As shown in FIG. 3, the annular base 2 has an annular arc tube (for example, an annular xenon lamp) 4 that emits flash light on the surface side thereof, and an annular reflector located on the back side of the annular arc tube 4. 5 and an annular light emitting element group 7 using a large number of light emitting elements 6 made of, for example, white LEDs (light emitting diodes) that emit illumination light inside the back side thereof, and positioned on the back side of the annular light emitting element group 7 An annular reflecting mirror 8 is incorporated. The light emitting elements 6 in the annular light emitting element group 7 are arranged in a 360 ° circular arrangement with a predetermined interval, for example, by an annular support substrate 9.

  The annular substrate 2 includes an annular light transmission plate 10 made of, for example, a transparent resin plate on an end surface on the front surface side, and an annular light transmission plate 11 made of, for example, a transparent resin plate on the end surface on the back surface side. Thereby, both front and back end faces of the annular substrate 2 are made to transmit light, and flash light (stroboscopic light) from the annular light emitting tube 4 is emitted forward from the front surface side of the annular substrate 2, and the annular light emitting element is emitted from the rear surface side. The illumination light from the group 7 is configured to irradiate forward.

  In FIG. 1, reference numeral 12 denotes a gripping projection provided on the outer peripheral portion of the annular base 2.

  Next, the light emission control means 3 will be described with reference to FIGS. The light emission control means 3 has a mounting portion 17 detachably mounted on a shoe portion 33 of the camera 31 and a housing side terminal 19 (see FIG. 5) that contacts the mounting portion 17 with a terminal 34 of the shoe portion 33. 4), a substantially rectangular parallelepiped housing portion 16 is provided. The housing portion 16 and the annular base body 2 are connected by a cable 18.

  The casing unit 16 obtains a shutter signal of the camera 31 through the casing side terminal 19 and the strobe circuit unit 20 that emits light in a flashing state in synchronization with the shutter signal, and the annular unit. The lighting circuit unit 21 that controls lighting of the light emitting element group 7, the strobe circuit unit 20, the battery unit 23 that supplies necessary power to the lighting circuit unit 21, and the operation switching of the strobe circuit unit 20 and the lighting circuit unit 21 are switched. A switch unit 24 to perform and a dimming volume 25 that is connected to the illumination circuit unit 21 and adjusts the light emission amount of the annular light emitting element group 7 are mounted.

  That is, the strobe circuit unit 20 includes a booster circuit that boosts the voltage applied from the battery unit 23 to a high voltage necessary for light emission of the annular light emitting tube 4, a light emission control circuit that controls light emission of the annular light emitting tube 4, and mounting A camera communication circuit that obtains a shutter signal of the camera 31 through a housing-side terminal 19 provided in the unit 17 and configured so that the annular luminous tube 4 emits light in a flashing state in synchronization with the shutter signal. Yes.

  The illumination circuit unit 21 boosts the voltage applied from the battery unit 23 to a voltage necessary for light emission of the annular light emitting element group 7, and the light amount is adjusted according to the operation of the dimming volume 25. A lighting / dimming circuit for lighting the annular light emitting element group 7 is provided.

  Next, the operation of the camera photographing light selective irradiation device 1 according to the present embodiment will be described separately.

(1) When the camera photographing light selective irradiation device 1 is used in a strobe mode In this case, as shown in FIG. 1, the annular substrate 2 is placed on the camera 31 with the front side facing the subject side (not shown). The mounting portion 17 of the housing portion 16 is attached to the shoe portion 33 of the camera 31 and the housing side terminal 19 is brought into contact with the terminal 34 of the shoe portion 33 while being attached to the lens barrel portion 32. Further, the switch unit 24 is switched to the strobe side.

  In this state, the operator holds the camera 31 with his / her hand and directs the lens barrel 32 toward the subject to press the shutter 35 to shoot the subject. At this time, the strobe circuit unit 20 acquires the shutter signal of the camera 31 via the housing side terminal 19 by the camera communication circuit, and the shutter light signal of the annular light emitting tube 4 based on the operation of the booster circuit and the light emission control circuit. Synchronize with the flashlight to emit light.

Flash light from the annular arc tube 4 is irradiated directly and by the reflection action of the reflecting mirror 5 to the subject in an annular or cylindrical form, and instantaneously brightly illuminates the subject.
Thereby, the operator can perform accurate photographing of the subject by using the camera photographing light selective irradiation device 1 as a strobe mode.

(2) When the camera photographing light selective irradiation apparatus 1 is used in a continuous illumination mode In this case, the back side of the annular base 2 is directed to the subject side as shown in FIG. In this state, it is mounted on the lens barrel 32 of the camera 31 and the mounting portion 17 of the housing 16 is mounted on the shoe 33 of the camera 31. The switch unit 24 is switched to the light emitting element 6 side.

  At this time, the illumination circuit section 21 has the light emitting elements 6 of the annular light emitting element group 7 so as to have a light amount corresponding to the operation amount of the dimming volume 25 based on the operation of the booster circuit and the lighting / dimming circuit. Each of which emits light,

  Illumination light from the annular light emitting element group 7 is irradiated directly and directly on the subject by the reflection action of the reflecting mirror 8 in an annular or cylindrical form, and continuously illuminates the subject.

  Thus, the operator can execute, for example, slow shutter photography of a subject, for example, with the camera photographing light selective irradiation device 1 as a continuous illumination mode.

  Thus, according to the present embodiment, a single camera photographing light selective illuminating device 1 is used, and this is selectively used for either the strobe mode or the continuous illumination mode, and the subject is photographed by flash irradiation. Further, it is possible to individually perform photographing by continuous illumination light irradiation and obtain a desired subject image.

  In addition, the camera photographing light selective irradiation device 1 according to the present embodiment includes the annular light emitting tube 4 and the annular light emitting element group 7 in each of the front side and the back side of the annular base body 2. The operations and effects described above can be exhibited with a compact configuration that suppresses an increase in the outer dimension of the base 2. In this embodiment, an example of an annular arc tube has been described, but it goes without saying that a plurality of straight tubes may be arranged in an annular shape.

  The selective light irradiation device for camera photographing of the present invention is widely used not only for the digital camera described above, but also for a still camera, a video camera, and an underwater camera system in which the camera is incorporated in an underwater camera case and performs underwater photography. It can be applied to.

1 is an exploded perspective view illustrating a camera photographing light selective irradiation device and a camera according to an embodiment of the present invention. It is the schematic perspective view seen from the back surface side of the cyclic | annular base | substrate in the light selective irradiation apparatus for camera imaging | photography concerning a present Example. It is a general | schematic fragmentary sectional view of the cyclic | annular base | substrate in the light selective irradiation apparatus for camera imaging | photography concerning a present Example. It is a schematic block diagram which shows the structure of the light selective irradiation apparatus for camera imaging | photography to a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera photographing light selective irradiation apparatus 2 Annular base | substrate 2a Circular hole 2b Engagement protrusion 3 Light emission control means 4 Annular luminous tube 5 Reflective mirror 6 Light emitting element 7 Annular light emitting element group 8 Reflective mirror 9 Support substrate 10 Light transmissive plate 11 Light transmissive Plate 12 Grasping projection 16 Housing portion 17 Mounting portion 18 Cable 19 Housing side terminal 20 Strobe circuit portion 21 Lighting circuit portion 23 Battery portion 24 Switch portion 25 Light control volume 31 Camera 32 Lens barrel portion 33 Shoe portion 34 Terminal 35 Shutter

Claims (3)

An annular base body with light transmission specifications on both front and back end surfaces that are selectively attached to the outer periphery of the lens barrel portion of the camera in a removable manner;
An annular arc tube or a plurality of straight tubes that emit flashlight disposed inside the surface side of the annular substrate;
An annular light emitting element group for emitting illumination light disposed inside the back side of the annular substrate;
Light emission control means for controlling the light emission operation of the annular light emitting tube or the plurality of straight tubes, the annular light emitting element group,
A light selective irradiating device for photographing with a camera. An annular base body with light transmission specifications on both front and back end surfaces that are selectively attached to the outer periphery of the lens barrel portion of the camera in a removable manner;
An annular arc tube or a plurality of straight tubes that emit flashlight disposed inside the surface side of the annular substrate;
An annular light emitting element group for emitting illumination light disposed inside the back side of the annular substrate;
A housing part that is detachably attached to the shoe part of the camera and has a housing-side terminal that contacts a terminal of the shoe part, and a shutter signal of the camera that is built in the housing part and passes through the housing-side terminal A strobe circuit unit that emits light in a flash state in synchronization with the shutter signal, and a lighting circuit unit that controls lighting of the annular light emitting element group built in the housing unit A light emission control means comprising: a battery unit that supplies necessary power to the strobe circuit unit and the lighting circuit unit; and a switch unit that switches operation of the strobe circuit unit and the lighting circuit unit;
A light selective irradiating device for photographing with a camera. An annular base body with light transmission specifications on both front and back end surfaces that are selectively attached to the outer periphery of the lens barrel portion of the camera in a removable manner;
An annular arc tube or a plurality of straight tubes that emit flashlight disposed inside the surface side of the annular substrate;
An annular reflecting mirror built in the back side of the annular arc tube or the plurality of straight tubes in the annular substrate;
An annular light emitting element group for emitting illumination light disposed inside the back side of the annular substrate;
An annular reflecting mirror built in the back side of the annular light emitting element group in the annular substrate;
A housing part that is detachably attached to the shoe part of the camera and has a housing-side terminal that contacts a terminal of the shoe part, and a shutter signal of the camera that is built in the housing part and passes through the housing-side terminal A strobe circuit unit that emits light in a flash state in synchronization with the shutter signal, and a lighting circuit unit that controls lighting of the annular light emitting element group built in the housing unit A battery unit for supplying necessary power to the strobe circuit unit and the lighting circuit unit, a switch unit for switching the operation of the strobe circuit unit and the lighting circuit unit, and a control unit for adjusting the light emission amount of the annular light emitting element group. A light emission control means comprising an optical volume;
A light selective irradiating device for photographing with a camera.

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