JP2006317742A - Optical member, photographing support adapter and illuminating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mitigate or eliminate constraints on the position/attitude of a remote flashing apparatus inexpensively without drastically modifying the constitution of a photographing system, regarding an optical member and a photographing support adapter loaded/added to a photographing illuminating apparatus, and also, the illuminating apparatus equipped with the optical member or the photographing support adapter. <P>SOLUTION: The optical member is positioned in an area irradiated with the light emitted from a first illuminating apparatus, and the optical member refracts or totally reflects a part of light in a direction so that an optical path may be formed between the area irradiated with the aforesaid light and a second illuminating apparatus positioned outside the area irradiated with the aforesaid light. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical member and a photographing support adapter that are attached to or added to a photographing illumination device, and a lighting device provided with these optical member or photographing support adapter.

The wireless flash device is also used for close-up photography performed as multiple-flash photography. Any remote flash unit (slave flash unit) used for such multiple-flash photography can receive the optical signal so that the master flash unit is sensitive to the optical signal emitted in conjunction with the shutter. It is installed in an appropriate position at a proper position.
JP 2001-117144 A

However, the remote flash device is sensitive to the optical signal at a position where the optical signal emitted from the master flash device is not irradiated, for example, even when the remote flash device is attached to an adapter ring attached to the tip of the photographing lens. And could not emit light.
It is an object of the present invention to provide an optical member, a photographing support adapter, and an illuminating device that can relax and eliminate restrictions on the position and posture of a remote flash device at a low cost without a significant change in the configuration of the photographing system. Objective.

  The optical member according to the present invention is located in the irradiation area of the light emitted from the first lighting device. Further, this optical member refracts or totally reflects a part of the light described above in a direction in which an optical path is formed between the light irradiation region and the second illumination device located outside the light irradiation region.

  According to the present invention, restrictions due to the configuration of the camera and shooting conditions are greatly relaxed, and desired multiple-flash shooting and close-up shooting using a wireless flash device can be flexibly realized.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First embodiment]
FIG. 1 is a diagram showing a first embodiment of the present invention. In the figure, a master flash device 12 is attached to the top of the camera 11. A protector 13 is attached to the opening of the master flash device 12 from which the flash light emitted by the master flash device 12 is emitted. One end of the photographic lens 14 is attached to the camera 11, and an adapter ring 15 is attached to the other end of the photographic lens 14. Remote flash devices 16A and 16B are attached to the adapter ring 15. The remote flash devices 16A and 16B are disposed, for example, at the “closest position” and “the farthest position” with respect to the opening of the master flash device 12 described above. The direction of the opening of the remote flash devices 16A and 16B is set to the direction of the subject. The light receiving windows 17A and 17B that are individually provided in the remote flash devices 16A and 16B and are used for receiving light to respond to an optical signal emitted from the master flash device 12 are at least one of the openings of the master flash device 12. It is arrange | positioned in the position which can be visually observed from a part.

Further, the protector 13 is made of a material having an optical transmission region only in the infrared wavelength region, and as shown in an enlarged view in FIG. 1, as a row of “sawtooth-shaped uneven portions” on one surface. It is configured as a plate-like optical member having the formed prism portion 13P.
The operation of this embodiment will be described below with reference to FIG.
The protector 13 blocks emission of main components other than the above-described infrared wavelength region among the components of the flash emitted by the master flash device 12 in conjunction with the shutter of the camera 11. Therefore, such a main component is not irradiated on the subject. However, the “infrared signal”, which is a part of the infrared component included in the flash and corresponds to the above-described optical signal, is received by the light receiving window 17A of the remote flash device 16A as shown in FIG. Since it is located in the irradiation area, it directly enters the light receiving window 17A.

  On the other hand, another “infrared signal” which is an infrared component included in the flash and corresponds to the above-described optical signal is refracted or totally reflected by the prism portion 13P, and is indicated by a one-dot chain line in FIG. Thus, the light is emitted in the direction of the light receiving window 17B of the remote flash device 16B. That is, even if the remote flash device 16B is installed at a position where the “infrared signal” radiated from the master flash device 12 is not irradiated, the remote flash device 16B is surely sensitive to the “infrared signal”. At the same time, a flash can be emitted to the subject.

Therefore, according to the present embodiment, the shape and optical characteristics of the protector 13 are set in advance so as to cause the above-described refraction and total reflection, so that the configuration can be increased at a low cost without any significant change. Restrictions on shooting conditions relating to lamp photography and close-up photography are eased or eliminated. In the present embodiment, the protector 13 may be configured as an optical component that can be attached to and detached from or replaced with the opening of the master flash device 12.
[Second Embodiment]
FIG. 2 is a diagram showing a second embodiment of the present invention. In the figure, the same elements as those shown in FIG. 1 are given the same reference numerals, and the description thereof is omitted here. The master flash unit 12bi is built in the camera 11 and has a mechanism that protrudes from the top of the camera 11 as shown in FIG. In the present embodiment, an adapter 23 including an optical member 21 and a support member 22 described later is provided instead of the protector 13 shown in FIG. Such an optical member 21 has a transmission region in the infrared wavelength region in the same manner as the protector 13 shown in FIG. 1, and, among the components of the flash light emitted by the master flash device 12bi, other than the infrared wavelength region. It is configured as a plate-like body having a size and shape that can prevent the main component from being irradiated onto the subject. The support member 22 is configured as an “L” -shaped arm having one end attached to the housing of the camera 11 and the other end supporting or fixing the optical member 21 described above.

The operation of this embodiment will be described below with reference to FIG.
The optical member 21 is supported by the support member 22 at a position close to the opening of the master flash device 12bi, and functions in the same manner as the protector 13 shown in FIG. 1 in combination with the master flash device 12bi.
That is, even if the master flash device 12bi is a flash device built in the camera 11, the remote flash device 16B has an adapter 23 (the optical member 21 and the support member 22) that can be made of an inexpensive material. Thus, it is possible to reliably respond to the “infrared signal” emitted from the master flash device 12bi through the optical member 21 and emit a flash to the subject together with the remote flash device 16A. Therefore, restrictions on the model and configuration of the camera used for the multiple-flash photography and the close-up photography are alleviated or eliminated.

  In the present embodiment, the optical member 21 does not need to be integrally molded with the support member 22 or fixed to the support member 22. For example, the optical member 21 is configured as an optical component that can be attached to and removed from the support member 22. May be. Further, in the present embodiment, the support member 22 is configured to be attachable to or attachable to all or part of the master flash device 12bi, the remote flash devices 16A and 16B, and the members to which these flash devices are attached. Also good.

  Moreover, in each embodiment mentioned above, the protector 13 and the optical member 21 do not need to be comprised as an optical component suitable only for a specific master flash device, for example, the shape of the various flash devices which can become a master flash device. A general-purpose groove that allows easy molding into a desired shape and size may be configured as a plate-shaped body that is molded in advance so as to flexibly adapt to the size and structure. Further, in each of the above-described embodiments, when there is no trouble in photographing the subject or the degree of such trouble is permissible, the optical transmission of the protector 13 and the optical member 21 also in the visible light region. There may be an area. The optical transmission range of the protector 13 and the optical member 21 may be in any wavelength range other than the infrared wavelength range as long as the remote flash devices 16A and 16B are surely sensitive.

  Further, in each of the above-described embodiments, the remote flash device 16A, 16B is an adapter when it must be placed directly beside the camera as a desired shooting condition including, for example, the above-described multiple-flash shooting and close-up shooting. The position may be determined by rotating the ring 15 or may be attached to a member other than the adapter ring 15. In each of the above-described embodiments, the master flash devices 12 and 12bi and the remote flash devices 16A and 16B have a xenon lamp 19 disposed inside the reflective shade 18 as a light source, as shown in FIGS. Is provided. However, such a xenon lamp 19 may be replaced with, for example, a light emitting diode or other light emitting element. Furthermore, in each of the above-described embodiments, the present invention is applied to the master flash devices 12 and 12bi that emit flash. However, the present invention is not limited to such master flash devices 12 and 12bi. For example, the remote flash devices 16A and 16B are triggered to emit light for a relatively long period of time or by constantly emitting light. It is applicable also to the illuminating device which points out.

  Moreover, in each embodiment mentioned above, the opening part of the master flash apparatuses 12 and 12bi may be located not only in the top part of the camera 11, but in any of the side part of the housing | casing of the camera 11, a bottom part, and a front surface. Further, in each of the embodiments described above, a part of the flash emitted by the master flash devices 12 and 12bi is refracted or totally reflected by the protector 13 and the optical member 21 in the light receiving window 17B of the remote flash device 16B. The “infrared signal” led by is incident. However, the present invention may be realized, for example, by providing a light source that secondarily emits the same “infrared signal” in accordance with the flash emitted by the master flash devices 12 and 12bi. The present invention is not limited to the above-described embodiments, and various embodiments are possible within the scope of the present invention, and any improvements may be made to some or all of the components.

  In addition, in the above-described Patent Document 1, in order to obtain a good light distribution characteristic even in photographing using a wide-angle lens, the “divergence operation unit” functions as a normal lens when the range of the subject is expanded to the periphery, Even if the optical path is changed by refraction in the `` light emitting action part '', it does not `` reflect or totally reflect specific light such as an infrared wavelength region other than the region and direction where the subject is located '', It does not fall under the invention that is the cause or trigger (motivation) of the present invention.

It is a figure which shows 1st embodiment of this invention. It is a figure which shows 2nd embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Camera, 12, 12bi ... Master flash device, 13 ... Protector, 13P ... Prism part, 16A, 16B ... Remote flash device, 17A, 17B ... Light receiving window, 18 ... Reflection shade, 19 ... Xenon lamp, 21 ... Optical member , 22 ... support member, 23 ... adapter

Claims (6)

A part of the light in a direction in which an optical path is formed between the irradiation area of the light emitted from the first lighting device and a second lighting device positioned outside the irradiation area of the light An optical member characterized by refraction or total reflection. The optical member according to claim 1,
Part of the light is
The optical member, wherein the second illumination device is light having a wavelength or wavelength range to which the second illumination device is sensitive. The optical member according to claim 1 or 2,
An optical member configured to be attachable to an opening of the first lighting device from which the light is emitted. The optical member according to any one of claims 1 to 3,
An imaging support adapter, comprising: a support member that supports the optical member at a position where the optical path can be formed. The optical member according to any one of claims 1 to 3,
And a light emitting means for emitting light for photographing in conjunction with a shutter of the camera. The shooting support adapter according to claim 4;
And a light emitting means for emitting light for photographing in conjunction with a shutter of the camera.

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