JP2014142557A5

JP2014142557A5 -

Info

Publication number: JP2014142557A5
Application number: JP2013012272A
Authority: JP
Filing date: 2013-01-25
Publication date: 2016-03-03
Anticipated expiration: 2033-01-25

Description

本発明は、曲管型の光源を用いることなく、光源からの光を効率良く利用してマクロ撮影等に適した照明を行うことができ、大型の電気部品を有しながらも十分に小型化された照明装置を提供する。 The present invention, without using a bend type light source, the light from the light source efficiently by utilizing can perform bright irradiation suitable for macro photography or the like, sufficiently compact while having a large electrical parts Provided a lighting device.

本発明の一側面としての照明装置は、撮影レンズの外周を囲むように配置可能であって、該照明装置が撮影レンズの外周を囲むように支持された状態において該撮影レンズの径方向に対応する方向を該照明装置の径方向とし、該撮影レンズの外周を囲む方向を該照明装置の周方向とし、撮影レンズを通して撮影される被写界に向かう方向を該照明装置の光照射方向とし、撮影レンズの光軸に沿う方向を該照明装置の厚さ方向とする。このとき、照明装置は、光源と、該光源よりも径方向の内側において周方向に延びるように設けられ、光源からの光を光照射方向に反射する第１の反射部、および光源から第１の反射部のうち該光源に面する部分に向かう光の一部を第１の反射部に沿って周方向のうち光源から離れる方向に延びる領域に向けて反射する第２の反射部を備えた反射部材とを有する。反射部材における第１の反射部および該第１の反射部の裏側の面が、周方向において光源から離れるほど厚さ方向における光照射方向の側に位置するように形成されている。そして、厚さ方向において反射部材の裏側に面したスペースに、光源に発光を開始させるためのトリガコイル、光源の発光量を検出するための受光センサおよび該照明装置につながるケーブルが接続されるコネクタのうち、少なくとも１つが配置されていることを特徴とする。 An illuminating device according to one aspect of the present invention can be disposed so as to surround the outer periphery of the photographing lens, and corresponds to the radial direction of the photographing lens in a state where the illuminating device is supported so as to surround the outer periphery of the photographing lens. The direction to be the radial direction of the illuminating device, the direction surrounding the outer periphery of the photographic lens is the circumferential direction of the illuminating device, the direction toward the object field photographed through the photographic lens is the light irradiation direction of the illuminating device, The direction along the optical axis of the photographing lens is the thickness direction of the illumination device. At this time, the illuminating device is provided so as to extend in the circumferential direction on the inner side in the radial direction from the light source, the first reflecting unit that reflects light from the light source in the light irradiation direction, and the first from the light source. with a second reflecting part for reflecting a part of light toward the portion facing the light source of the reflective portion of a region extending away from the light source of the first circumferential direction along the reflective portion A reflection member. Rear surface of the first reflecting portion and the first reflection portion in the reflection member is formed so as to be positioned on the side of the light irradiation direction in the thickness direction farther from the light source in the circumferential direction. Then, in the space facing the back side of the reflecting member in the thickness direction, a trigger coil for starting the light emission source, a cable connected to the light receiving sensor and the lighting device for detecting the amount of light emitted from the light source is connected At least one of the connectors is arranged.

本発明によれば、曲管型の光源を用いなくても、光源からの光を効率良く利用してマクロ撮影等に適した照明を行うことができる照明装置を実現することができる。 According to the present invention, it is possible to provide an illumination device which can be carried out, the light irradiation suitable for macro photography or the like light efficiently utilized from the light source without using a bent-tube type light source.

Claims

A deployable lighting device so as to surround the outer periphery of the photographing lens,
In a state in which the illumination device is supported so as to surround the outer periphery of the photographing lens, a direction corresponding to the radial direction of the photographing lens is a radial direction of the illumination device, and a direction surrounding the outer periphery of the photographing lens is the illumination device And the direction toward the object scene photographed through the photographing lens as the light irradiation direction of the illumination device, and the direction along the optical axis of the photographing lens as the thickness direction of the illumination device,
A light source;
A first reflecting portion that extends in the circumferential direction inside the radial direction from the light source, and reflects light from the light source in the light irradiation direction; and from the light source to the first reflecting portion . Reflection provided with a second reflecting portion that reflects a part of the light toward the portion facing the light source toward the region extending in the circumferential direction away from the light source along the first reflecting portion. And having a member
The first reflecting portion of the reflecting member and the back surface of the first reflecting portion are formed so as to be positioned in the light irradiation direction as the distance from the light source in the circumferential direction increases.
In the space facing the back side of the reflecting member in the thickness direction, a trigger coil for starting the light emission to the light source, the cable leading to the light receiving sensor and the lighting device for detecting the emission amount of the light source At least one of the connectors to be connected is disposed.

It has a condensing member that directs the light diverging from the light source to the inside in the radial direction from the light source using a reflective surface,
The condensing member has the two reflection surfaces on the light irradiation direction side and the opposite side from the light source in the thickness direction, and has a light exit opening between the two reflection surfaces,
In the cross-section along the thickness direction, the light collecting member has a center direction of an emission range of light emitted from the light emission opening toward the inner side of the radial direction, and the light irradiation direction side. The lighting device according to claim 1, wherein the lighting device is arranged to be inclined to the opposite side.

It has a condensing member that directs the light diverging from the light source to the inside in the radial direction from the light source using a reflective surface,
The condensing member has two reflecting surfaces on the light irradiation direction side and the opposite side from the light source in the thickness direction, and the two reflecting surfaces are symmetrical with respect to a symmetry plane passing through the light source. Has a shape along two surfaces,
2. The illumination according to claim 1, wherein the condensing member is arranged such that the symmetry plane is inclined inward in the radial direction and opposite to the light irradiation direction. apparatus.

4. The illumination device according to claim 2, wherein a portion of the first reflecting portion facing the light source has an inclination angle smaller than 45 ° with respect to the radial direction.

5. The illumination device according to claim 1, wherein the light source is a straight tube type or a linear type light source whose longitudinal direction is a tangential direction with respect to the circumferential direction. 6.

The reflecting member has two first reflecting portions on both sides of the light source in the circumferential direction,
The trigger coil is disposed in the space on one side of the two first reflecting portions of the reflecting member, and the light receiving sensor is disposed in the space on the other side. The illumination device according to any one of 1 to 5.

The lighting device according to claim 1, wherein a hole through which light from the light source passes toward a light receiving portion of the light receiving sensor is formed in the reflecting member.

The illumination device according to claim 1, wherein a hole for holding a light receiving portion of the light receiving sensor is formed in the reflecting member.

The illumination device according to claim 1, wherein light from the light source is guided to the light receiving sensor by an optical fiber.

The trigger coil is disposed in the space;
The lighting device according to claim 1, wherein the reflecting member is provided with a wall portion that covers the trigger coil.

11. The photographic lens can be attached and detached, and is disposed so as to surround the outer periphery of the photographic lens by being attached to the photographic lens. The lighting device according to item.

A first reflecting portion formed in an arc shape;
A light source disposed outside the first reflecting portion in the radial direction of the first reflecting portion;
A second reflector that reflects light from the light source in a circumferential direction of the first reflector and away from the light source;
An emission part for emitting the light reflected by the first reflection part,
The first reflecting unit reflects light from the light source and light from the second reflecting unit in the direction of the emitting unit, and is positioned closer to the emitting unit as the distance from the light source in the circumferential direction increases. Is formed as
In order to detect a light emission amount of the light source, a trigger coil for causing the light source to start light emission in a space facing a surface of the first reflecting portion opposite to the emission portion side in the thickness direction. At least one of the light receiving sensor and the connector to which the cable connected to the lighting device is connected is disposed.