JP2005331785A - Illumination device for photography - Google Patents

Illumination device for photography Download PDF

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JP2005331785A
JP2005331785A JP2004151190A JP2004151190A JP2005331785A JP 2005331785 A JP2005331785 A JP 2005331785A JP 2004151190 A JP2004151190 A JP 2004151190A JP 2004151190 A JP2004151190 A JP 2004151190A JP 2005331785 A JP2005331785 A JP 2005331785A
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light
illumination
lens barrel
guide member
light guide
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JP4530718B2 (en
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Shinichi Kakiuchi
伸一 垣内
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Pentax Corp
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Pentax Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device which efficiently illuminates row of teeth with equal brightness, without giving unpleasant feeling to a patients in close-up photography for dental medical care. <P>SOLUTION: The illuminator attached to the periphery of the lens barrel of a digital camera includes a tapered lightguide member 16 which is tapered going toward a subject side. The lightguide member 16 has a radiation surface 22 vertical to the center axis E of the lens barrel and an inner peripheral surface 24 parallel with the center axis. In a light source part 14, 1st to 16th LEDs 15A to 15P are arranged on a package board 17 at different intervals, and the quantity of illuminating light, irradiated from the horizontal area H of the irradiation surface 22 and the area in contact with the horizontal area H of the inner peripheral surface 24, is larger than the quantity of light from the vertical area V thereof and the area in contact with the vertical area V of the inner peripheral surface 24. The illuminator illuminates only the periphery part of patient's mouth so that the row of teeth including front teeth near the vertical area V and back teeth near the horizontal area H, which look darker than the front teeth, may be totally irradiated with the equal brightness. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、接写撮影用の照明装置に関し、特に、人の歯列を接写撮影する歯科医療用の照明装置に関する。   The present invention relates to an illumination device for close-up photography, and more particularly to a dental illumination device for photographing close-ups of a human dentition.

一般に、歯科医療用に人の歯列を接写撮影する場合、接写に適したリングストロボが使用される場合がある（例えば特許文献１）。リングストロボは、撮影装置のレンズ鏡筒の外周に取付けられ、患者の口元に光を照射する。
特開２００１−３５６４０３号公報（図１） In general, when taking a close-up image of a human dentition for dentistry, a ring strobe suitable for close-up photography may be used (for example, Patent Document 1). The ring strobe is attached to the outer periphery of the lens barrel of the imaging apparatus and irradiates light to the patient's mouth.
JP 2001-356403 A (FIG. 1)

患者の歯列の撮影においてリングストロボを用いると、顔面全般が照明され、照明光の眩しさや、熱などにより、患者に不快感を与える場合がある。リングストロボの発光面が大きい場合、接写撮影において、患者に威圧感を与える場合もある。さらにリングストロボが、撮影には関係のない範囲まで照明することによって、効率的に照明できず、無駄な電力消費につながる場合がある。   When a ring strobe is used in photographing a patient's dentition, the entire face is illuminated, and the patient may feel uncomfortable due to glare of illumination light, heat, or the like. When the light emission surface of the ring strobe is large, there may be an intimidating feeling to the patient in close-up photography. Further, if the ring strobe illuminates a range that is not related to shooting, it may not be able to illuminate efficiently, leading to unnecessary power consumption.

また、歯列の接写撮影では、撮影装置からの距離が短く、自然光のもとでも比較的明るい前歯と、撮影装置からの距離が長く、暗い奥歯とを均等な明るさに照明することができず、前歯の輝度が適当になるように撮影した場合、奥歯の輝度が不足する場合がある。   In close-up photography of the dentition, the distance from the imaging device is short, and the front teeth that are relatively bright under natural light and the distance from the imaging device are long, and the dark back teeth can be illuminated with uniform brightness. First, when photographing is performed so that the front teeth have appropriate brightness, the back teeth may have insufficient brightness.

本発明は、歯科医療のための接写撮影において、歯列が均等な明るさになるように、なおかつ患者に不快感を与えることなく効率的に歯列を照明する照明装置など、明るい領域と暗い領域を有する被写体を均等な明るさに、かつ撮影に必要な範囲のみを効率的に、照明する照明装置を提供することを目的とする。   In close-up photography for dentistry, the present invention provides a bright area and a dark area such as an illuminating device that efficiently illuminates a dentition so that the dentition becomes uniform brightness without causing discomfort to the patient. An object of the present invention is to provide an illumination device that illuminates a subject having a region with uniform brightness and efficiently only a range necessary for photographing.

本発明の照明装置は、レンズ鏡筒の外周に設けられ、レンズ鏡筒側から被写体側に向けて照明光を放射する、環状に配置された複数の光源を備えている。そして、複数の光源は、異なる間隔で配置されている。   The illumination device according to the present invention includes a plurality of light sources arranged in an annular shape, which are provided on the outer periphery of the lens barrel and emit illumination light from the lens barrel side toward the subject side. The plurality of light sources are arranged at different intervals.

照明装置は、着脱自在にレンズ鏡筒に取付けられることが好ましい。   It is preferable that the illumination device is detachably attached to the lens barrel.

照明装置は、複数の光源を備えた光源部を有し、光源部は、例えば、光源が所定の間隔で配置された領域である短間隔領域と、光源が所定の間隔よりも長い間隔で配置された領域である長間隔領域とを２つずつ有し、２つの短間隔領域と２つの長間隔領域とはそれぞれ相対する位置にある。   The illumination device includes a light source unit including a plurality of light sources, and the light source unit includes, for example, a short interval region where the light sources are arranged at a predetermined interval and a light source arranged at an interval longer than the predetermined interval. There are two long-spaced regions, which are formed regions, and the two short-spaced regions and the two long-spaced regions are in opposite positions.

照明装置は、筒状で、かつレンズ鏡筒の中心軸方向にて、光源から被写体側の先端部に向けて径方向寸法が小さくなるテーパ状をなし、入射する照明光を被写体側に向けて導く導光部材と、導光部材の外周面を覆うように配置され、導光部材を透過した照明光を反射する反射部材とをさらに有することが好ましい。   The illumination device is cylindrical and has a tapered shape in which the radial dimension decreases from the light source toward the tip of the subject side in the central axis direction of the lens barrel, and the incident illumination light is directed toward the subject side. It is preferable to further include a light guide member that guides and a reflection member that is disposed so as to cover the outer peripheral surface of the light guide member and reflects the illumination light transmitted through the light guide member.

導光部材は、被写体側の端部に照射面を有することが好ましく、照明装置の取付け時において、照射面のうち中心軸から略水平方向に離れた水平領域に向けて照明光を放射する光源が、中心軸から略垂直方向に離れた領域である垂直領域に向けて照明光を放射する光源よりも短い間隔で配置されることが好ましい。   The light guide member preferably has an irradiation surface at the end on the object side, and emits illumination light toward a horizontal region substantially horizontally away from the central axis of the irradiation surface when the illumination device is attached. However, it is preferable that they are arranged at a shorter interval than a light source that emits illumination light toward a vertical region that is a region that is substantially perpendicular to the central axis.

導光部材の被写体側の先端部は、レンズ鏡筒の中心軸方向において、反射部材よりも突出したフランジ部を有することが好ましい。また、導光部材は、光源から入射する照明光を拡散させる拡散性材料で構成されていることが望ましい。そして、導光部材の内周面は、レンズ鏡筒の中心軸に略平行であることが好ましい。   The tip of the light guide member on the subject side preferably has a flange portion that protrudes more than the reflecting member in the central axis direction of the lens barrel. The light guide member is preferably made of a diffusive material that diffuses illumination light incident from the light source. The inner peripheral surface of the light guide member is preferably substantially parallel to the central axis of the lens barrel.

照明装置の被写体側の先端部の内径は、レンズ鏡筒の内径と略等しいことが望ましい。   It is desirable that the inner diameter of the tip of the illumination device on the subject side is substantially equal to the inner diameter of the lens barrel.

本発明によれば、接写撮影において、歯列が均等な明るさになるように、なおかつ患者の口元のみに照明光を照射して患者に不快感を与えることなく効率的に照明する照明装置を提供できる。   According to the present invention, in close-up photography, an illuminating device that illuminates efficiently without irradiating a patient by irradiating illumination light only to the patient's mouth so that the dentition has uniform brightness. Can be provided.

以下、本発明の実施形態を、図面を参照して説明する。図１は、照明装置とデジタルカメラとを示す斜視図である。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a lighting device and a digital camera.

本実施形態における照明装置１０は、デジタルカメラ３０の撮影光学系（図示せず）を内包したレンズ鏡筒３２の外周部の先端に着脱自在に取付けられ、使用される。レンズ鏡筒３２は、一眼レフカメラ用の交換レンズと略同じ径を有する。照明装置１０は、筒状であって、被写体側に向かって細くなるテーパ状である。照明装置１０の光源として、リング状に配置された複数のＬＥＤ（図示せず）が用いられており、光源には、接続コード４２を介して照明装置１０と電気的に接続された電源ユニット４０から、電源が供給される。   The illumination device 10 according to the present embodiment is detachably attached to the distal end of the outer periphery of a lens barrel 32 that includes a photographing optical system (not shown) of the digital camera 30 and is used. The lens barrel 32 has substantially the same diameter as an interchangeable lens for a single-lens reflex camera. The illuminating device 10 is cylindrical and has a tapered shape that becomes narrower toward the subject. A plurality of LEDs (not shown) arranged in a ring shape are used as the light source of the illuminating device 10, and the power source unit 40 electrically connected to the illuminating device 10 via the connection cord 42 is used as the light source. Power is supplied.

図２は、照明装置１０と電源ユニット４０とを示す斜視図である。   FIG. 2 is a perspective view showing the lighting device 10 and the power supply unit 40.

照明装置１０は、取付け部１２を介して、着脱自在にレンズ鏡筒３２に取付けられる。電源ユニット４０は、デジタルカメラ３０に設けられた三脚の取付け穴（図示せず）に螺合する螺子４４を介して、デジタルカメラ３０に取付けられる。ユーザは、螺子４４に連動するダイヤル４６を操作することにより、電源ユニット４０を着脱する。   The illumination device 10 is detachably attached to the lens barrel 32 via the attachment portion 12. The power supply unit 40 is attached to the digital camera 30 via a screw 44 that is screwed into a tripod attachment hole (not shown) provided in the digital camera 30. The user attaches and detaches the power supply unit 40 by operating a dial 46 interlocked with the screw 44.

図３は、レンズ鏡筒３２に取付けられた状態の照明装置１０の断面図である。   FIG. 3 is a cross-sectional view of the illumination device 10 attached to the lens barrel 32.

照明装置１０は、照明光を放射する複数のＬＥＤを備えた光源部１４、導光部材１６及び反射部材１８を備える。光源部１４は、レンズ鏡筒３２側から被写体側に向けて照明光を放射し、照明光の光路を妨げないために、照明装置１０のレンズ鏡筒３２側の端部近傍、すなわち取付け部１２の近傍に配置される。導光部材１６は、筒状であって、かつレンズ鏡筒３２の中心軸方向にて、光源部１４側から被写体側に向かって細くなるテーパ状に形成されている。導光部材１６は、光源部１４に接しており、照明光を拡散させる拡散性の材料によって形成されている。このため、光源部１４が放射した照明光を、被写体側に向けて導光する。反射部材１８は、導光部材１６の外周面を覆うように、導光部材１６と同軸的に筒状かつテーパ状に形成され、導光部材１６を透過した照明光を反射する。   The illumination device 10 includes a light source unit 14 including a plurality of LEDs that emit illumination light, a light guide member 16, and a reflection member 18. The light source unit 14 emits illumination light from the lens barrel 32 toward the subject and does not obstruct the optical path of the illumination light, that is, near the end of the illumination device 10 on the lens barrel 32 side, that is, the attachment unit 12. It is arranged in the vicinity of The light guide member 16 has a cylindrical shape and is formed in a tapered shape that becomes narrower from the light source unit 14 side toward the subject side in the central axis direction of the lens barrel 32. The light guide member 16 is in contact with the light source unit 14 and is formed of a diffusible material that diffuses illumination light. Therefore, the illumination light emitted from the light source unit 14 is guided toward the subject side. The reflection member 18 is formed in a cylindrical shape and a tapered shape coaxially with the light guide member 16 so as to cover the outer peripheral surface of the light guide member 16, and reflects the illumination light transmitted through the light guide member 16.

導光部材１６中の矢印は、導光部材１６中での照明光の光路を例示している。光源部１４から放射された照明光は、その一部を除き、反射部材１８の表面において反射されることにより、透過性の導光部材１６中を拡散されながら導光される。その結果、導光部材１６の内周面２４から、反射部材１８によって反射された照明光が、デジタルカメラ３０のレンズ鏡筒の中心軸Ｅに向かう方向に射出される（矢印Ａ参照）。なお、矢印Ａは、照明光の射出方向を例示するものであり、内周面２４からの照明光は、実際には様々な角度で、中心軸Ｅに向かいつつ被写体側に進むように、射出される。また、中心軸Ｅは、撮影光学系３４の光軸と一致する。   An arrow in the light guide member 16 illustrates an optical path of illumination light in the light guide member 16. The illumination light emitted from the light source unit 14 is guided by being diffused through the transmissive light guide member 16 by being reflected on the surface of the reflection member 18 except for a part thereof. As a result, the illumination light reflected by the reflecting member 18 is emitted from the inner peripheral surface 24 of the light guide member 16 in a direction toward the central axis E of the lens barrel of the digital camera 30 (see arrow A). Note that the arrow A exemplifies the direction in which the illumination light is emitted, and the illumination light from the inner peripheral surface 24 is actually emitted at various angles so as to travel toward the subject while facing the central axis E. Is done. Further, the central axis E coincides with the optical axis of the photographing optical system 34.

導光部材１６は、被写体側の先端部にフランジ部２０を有する。フランジ部２０は、レンズ鏡筒の中心軸Ｅ方向において、反射部材１８の被写体側の端部より突出している。フランジ部２０の先端には、中心軸Ｅに垂直な照射面２２が設けられている。そして、照射面２２からは、光源部１４からの照明光のうち、反射部材１８の表面において反射されない照明光が主に射出される。このため、照射面２２から射出される照明光の一部は、中心軸Ｅに平行な方向に沿って進む。さらに、照明光が導光部材１６によって拡散されていることから、照射面２２からの照明光の一部は、中心軸Ｅから離れるように、中心軸Ｅに対して照射角αを有する方向に沿って射出される（矢印Ｂ参照）。矢印Ｂも、照射光の射出方向を例示するものである。なお、フランジ部２０は、照射面２２のみならず、照明装置１０の外面の先端部を形成する外周面２３を有し、少し離れて撮影したときに写り込む照明領域と非照明領域の境目を目立たなくするために、外周面２３からも照明光がわずかに射出される。   The light guide member 16 has a flange portion 20 at the distal end portion on the subject side. The flange portion 20 protrudes from the subject-side end of the reflecting member 18 in the direction of the central axis E of the lens barrel. An irradiation surface 22 perpendicular to the central axis E is provided at the tip of the flange portion 20. And from the irradiation surface 22, the illumination light which is not reflected in the surface of the reflection member 18 among the illumination lights from the light source part 14 is mainly inject | emitted. For this reason, part of the illumination light emitted from the irradiation surface 22 travels along a direction parallel to the central axis E. Further, since the illumination light is diffused by the light guide member 16, a part of the illumination light from the irradiation surface 22 is in a direction having an irradiation angle α with respect to the central axis E so as to be away from the central axis E. (See arrow B). Arrow B also exemplifies the direction of emission of irradiation light. The flange portion 20 has not only the irradiation surface 22 but also an outer peripheral surface 23 that forms the front end portion of the outer surface of the lighting device 10, and the boundary between the illumination area and the non-illumination area that is reflected when shooting a little away from each other. In order to make it inconspicuous, illumination light is also slightly emitted from the outer peripheral surface 23.

また、導光部材１６が、反射部材１８によって反射されない照明光の一部を、照射面２２から中心軸Ｅに略平行な方向に射出するために、光源部１４は、内周面２４に近くなるように配置されている。内周面２４は中心軸Ｅに平行であり、照明装置１０の被写体側の先端部における内径は、レンズ鏡筒３２の内径に略等しい。さらに、導光部材１６と反射部材１８とが、被写体側に向かって細くなるテーパ状であることから、照射面２２から照射される照明光は、広い範囲に渡って照射されず、中心軸Ｅに対する照射角αは、小さい角度に抑えられる。   Further, since the light guide member 16 emits part of the illumination light that is not reflected by the reflecting member 18 in a direction substantially parallel to the central axis E from the irradiation surface 22, the light source unit 14 is close to the inner peripheral surface 24. It is arranged to be. The inner peripheral surface 24 is parallel to the central axis E, and the inner diameter at the subject-side tip of the illumination device 10 is substantially equal to the inner diameter of the lens barrel 32. Furthermore, since the light guide member 16 and the reflection member 18 are tapered so as to become narrower toward the subject side, the illumination light irradiated from the irradiation surface 22 is not irradiated over a wide range, and the central axis E The irradiation angle α with respect to is suppressed to a small angle.

図４は、光源部１４と導光部材１６とを示す斜視図である。なお、光源部１４と導光部材１６の光源取付け面２６とは、実際には互いに接しているものの、それぞれの形状を明確に示すため、図４は、これらが分離した状態を示す。図５は、光源部１４を示す上面図である。図６は、歯列の撮影における光源部１４および照射面２２と、歯列との位置関係を概略的に示す図である。   FIG. 4 is a perspective view showing the light source unit 14 and the light guide member 16. In addition, although the light source part 14 and the light source attachment surface 26 of the light guide member 16 are actually in contact with each other, FIG. 4 shows a state in which they are separated in order to clearly show their shapes. FIG. 5 is a top view showing the light source unit 14. FIG. 6 is a diagram schematically showing a positional relationship between the light source unit 14 and the irradiation surface 22 and the dentition in photographing of the dentition.

光源部１４は、第１〜第１６ＬＥＤ１５Ａ〜１５Ｐと、円環状の実装基板１７を備える。第１〜第１６ＬＥＤ１５Ａ〜１５Ｐは、実装基板１７上に異なる間隔で取付けられている。すなわち、照射面２２の水平領域Ｈに向けて照明光を放射する第２〜第８ＬＥＤ１５Ｂ〜１５Ｈ及び第１０〜第１６ＬＥＤ１５Ｊ〜１５Ｐは、それぞれ間隔Ｄ1を隔てて配置され、垂直領域Ｖに照明光を放射する第１、第２及び第１６ＬＥＤ１５Ａ、１５Ｂ、１５Ｐ、第８〜第１０ＬＥＤ１５Ｈ〜１５Ｊは、いずれも間隔Ｄ1よりも長い間隔Ｄ2を隔てて配置されている（図５参照）。そして、２つの水平領域Ｈは、実装基板１７の中心を隔てて互いに相対する位置にあり、２つの垂直領域Ｖについても同様である。 The light source unit 14 includes first to sixteenth LEDs 15A to 15P and an annular mounting substrate 17. The first to sixteenth LEDs 15A to 15P are mounted on the mounting substrate 17 at different intervals. That is, second to 8LED15B~15H and tenth to 16LED15J~15P emits illuminating light toward the horizontal region H of the irradiation surface 22 are arranged at intervals D 1, the illumination light in the vertical region V first, second and third 16LED15A, 15B, 15P, eighth 10LED15H~15J that emits is arranged either at a long distance D 2 than the distance D 1 (see FIG. 5). The two horizontal regions H are located at positions facing each other across the center of the mounting substrate 17, and the same applies to the two vertical regions V.

第１〜第１６ＬＥＤ１５Ａ〜１５Ｐは、それぞれ同じ光量の照明光を放射する。いずれのＬＥＤからの照明光も、導光部材１６によって拡散されつつ導光される。この結果、導光部材１６による拡散の後に、照射面２２の水平領域Ｈから被写体に向けて照射される照明光の光量は、垂直領域Ｖからの光量よりも大きい。さらに、内周面２４についても同様に、水平領域Ｈに接する領域からの照明光の光量は、垂直領域Ｖに接する領域からの光量よりも大きくなる。   The first to sixteenth LEDs 15A to 15P each emit the same amount of illumination light. The illumination light from any LED is guided while being diffused by the light guide member 16. As a result, the amount of illumination light emitted from the horizontal region H of the irradiation surface 22 toward the subject after diffusion by the light guide member 16 is larger than the amount of light from the vertical region V. Further, similarly, on the inner peripheral surface 24, the amount of illumination light from the region in contact with the horizontal region H is larger than the amount of light from the region in contact with the vertical region V.

第１〜第１６ＬＥＤ１５Ａ〜１５Ｐは、実装基板１７に沿って配設された第１ワイヤ２７、及び第２ワイヤ２８によって電気的に接続されている。第１ワイヤ２７は陽極用であり、第２ワイヤ２８は陰極用である。第１〜第１６ＬＥＤ１５Ａ〜１５Ｐは、第１及び第２ワイヤ２７、２８と接続コード４２を介して、電源ユニット４０から電源供給される（図１参照）。   The first to sixteenth LEDs 15 </ b> A to 15 </ b> P are electrically connected by a first wire 27 and a second wire 28 arranged along the mounting substrate 17. The first wire 27 is for the anode, and the second wire 28 is for the cathode. The first to sixteenth LEDs 15A to 15P are supplied with power from the power supply unit 40 via the first and second wires 27 and 28 and the connection cord 42 (see FIG. 1).

照明装置１０は、照射面２２の水平領域Ｈが、中心軸Ｅから略水平方向に離れた領域、すなわち奥歯の近傍に位置し、垂直領域Ｖが、中心軸Ｅから略垂直方向に離れた領域、すなわち前歯の上下付近に位置するように、レンズ鏡筒３２に取付けられる（図６参照）。このため、自然光の届きにくい奥歯に照射される照明光の光量は、前歯に照射される照明光の光量よりも大きくなり、照明装置１０は、全体的に均等な明るさになるように歯列を照明する。   In the illumination device 10, the horizontal region H of the irradiation surface 22 is located in a region that is substantially horizontal away from the central axis E, that is, in the vicinity of the back tooth, and the vertical region V is a region that is substantially perpendicular to the central axis E. That is, it is attached to the lens barrel 32 so as to be positioned near the top and bottom of the front teeth (see FIG. 6). For this reason, the amount of illumination light applied to the back teeth, which is difficult to reach natural light, is greater than the amount of illumination light applied to the front teeth, and the illuminating device 10 has a uniform dentition so that the overall brightness is uniform. Illuminate.

図７は、デジタルカメラ３０と共に使用される照明装置１０を示す側面図である。   FIG. 7 is a side view showing the illumination device 10 used with the digital camera 30.

照明装置１０は、照射面２２が対向する被写体の表面であって、照射面２２よりもやや広い領域を照明する。そして、本実施形態においては、導光部材１６の形状等が歯列の接写に適するように調整されているため、照明装置１０は、接写時に、患者の目には照明光を照射せず、口を含む鼻より下の照明領域４８のみを照明する。必要な範囲のみを照明し、さらに発光効率の高いＬＥＤを光源として用いることから、照明装置１０は、電力消費を抑えた効率的な照明を可能にする。   The illuminating device 10 illuminates a surface of the subject that the irradiation surface 22 faces and is slightly wider than the irradiation surface 22. And in this embodiment, since the shape etc. of the light guide member 16 are adjusted so as to be suitable for close-up of the dentition, the illuminating device 10 does not irradiate the patient's eyes with illumination light during close-up, Only the illumination area 48 below the nose including the mouth is illuminated. Since only a necessary range is illuminated and an LED having a high luminous efficiency is used as a light source, the illumination device 10 enables efficient illumination with reduced power consumption.

以上のように、本実施形態によれば、接写撮影において、歯列がほぼ均等な明るさになるように照明し、なおかつ患者の口元のみに照明光を照射して、患者に不快感を与えず効率的に照明する照明装置が実現できる。   As described above, according to the present embodiment, in close-up photography, illumination is performed so that the dentition has almost uniform brightness, and only the patient's mouth is irradiated with illumination light, thereby giving the patient discomfort. Therefore, an illumination device that efficiently illuminates can be realized.

光源部１４は、発光効率が高く、継続して照明光を放射できるＬＥＤを含むことが好ましいが、これに限定されない。例えば、キセノンランプを用いて照明光を放射しても良い。また、ＬＥＤの数や配置間隔も本実施形態に限定されない。   The light source unit 14 preferably includes an LED that has high luminous efficiency and can continuously emit illumination light, but is not limited thereto. For example, illumination light may be emitted using a xenon lamp. Further, the number and arrangement interval of the LEDs are not limited to the present embodiment.

照射面及び内周面を含む導光部材等の大きさ、形状は、歯列の接写に適当である限り、本実施形態に限定されない。   The size and shape of the light guide member and the like including the irradiation surface and the inner peripheral surface are not limited to the present embodiment as long as they are appropriate for close-up of the dentition.

電源ユニット４０は、接続コード４２を介さずに、照明装置１０と接しながら電源供給しても良い。この場合、電源ユニット４０は、例えば、光源部１４の近傍で、レンズ鏡筒３２を覆うように設置される。   The power supply unit 40 may supply power while being in contact with the lighting device 10 without using the connection cord 42. In this case, the power supply unit 40 is installed, for example, in the vicinity of the light source unit 14 so as to cover the lens barrel 32.

照明装置とデジタルカメラとを示す斜視図である。It is a perspective view which shows an illuminating device and a digital camera. 照明装置と電源ユニットとを示す斜視図である。It is a perspective view which shows an illuminating device and a power supply unit. レンズ鏡筒に取付けられた状態の照明装置の断面図である。It is sectional drawing of the illuminating device in the state attached to the lens-barrel. 分離した状態での光源部と導光部材とを示す斜視図である。It is a perspective view which shows the light source part and light guide member in the isolate | separated state. 光源部を示す上面図である。It is a top view which shows a light source part. 歯列の撮影における光源部および照射面と、歯列との位置関係を示す図である。It is a figure which shows the positional relationship of the light source part and irradiation surface in imaging | photography of a dentition, and a dentition. デジタルカメラと共に使用される照明装置を示す側面図である。It is a side view which shows the illuminating device used with a digital camera.

符号の説明Explanation of symbols

１０ 照明装置
１２ 取付け部
１４ 光源部
１５Ａ〜１５Ｐ 第１〜第１６ＬＥＤ（光源）
１６ 導光部材
１８ 反射部材
２０ フランジ部
２２ 照射面
２４ 内周面
３０ デジタルカメラ（撮影装置）
３２ レンズ鏡筒
３４ 撮影光学系
Ｅ 中心軸
Ｖ 垂直領域（長間隔領域）
Ｈ 水平領域（短間隔領域）

DESCRIPTION OF SYMBOLS 10 Illuminating device 12 Mounting part 14 Light source part 15A-15P 1st-16th LED (light source)
16 Light guide member 18 Reflecting member 20 Flange part 22 Irradiation surface 24 Inner peripheral surface 30 Digital camera (imaging device)
32 Lens barrel 34 Imaging optical system E Central axis V Vertical area (long interval area)
H Horizontal area (short interval area)

Claims (9)

レンズ鏡筒の外周に設けられる照明装置であって、
前記レンズ鏡筒側から被写体側に向けて照明光を放射する、環状に配置された複数の光源を備え、
前記複数の光源が、異なる間隔で配置されていることを特徴とする照明装置。 An illumination device provided on the outer periphery of the lens barrel,
A plurality of light sources arranged in an annular shape for emitting illumination light from the lens barrel side toward the subject side;
The lighting apparatus, wherein the plurality of light sources are arranged at different intervals. 前記照明装置が、前記レンズ鏡筒に着脱自在に取付けられることを特徴とする請求項１に記載の照明装置。   The lighting device according to claim 1, wherein the lighting device is detachably attached to the lens barrel. 前記複数の光源を備えた光源部が、前記光源が所定の間隔で配置された領域である短間隔領域と、前記光源が前記所定の間隔よりも長い間隔で配置された領域である長間隔領域とを２つずつ有し、２つの前記短間隔領域と２つの前記長間隔領域とがそれぞれ相対する位置にあることを特徴とする請求項１に記載の照明装置。   The light source unit including the plurality of light sources includes a short interval region where the light sources are arranged at a predetermined interval, and a long interval region where the light sources are arranged at an interval longer than the predetermined interval. The lighting device according to claim 1, wherein the two short-interval regions and the two long-interval regions are in positions facing each other. 筒状で、かつ前記レンズ鏡筒の中心軸方向にて、前記光源から被写体側の先端部に向けて径方向寸法が小さくなるテーパ状をなし、入射する前記照明光を被写体側に向けて導く導光部材と、
前記導光部材の外周面を覆うように配置され、前記導光部材を透過した前記照明光を反射する反射部材とをさらに有することを特徴とする請求項１に記載の照明装置。 It is cylindrical and has a tapered shape in which the radial dimension decreases from the light source toward the tip of the subject side in the central axis direction of the lens barrel, and the incident illumination light is guided toward the subject side. A light guide member;
The illumination device according to claim 1, further comprising a reflection member that is disposed so as to cover an outer peripheral surface of the light guide member and reflects the illumination light transmitted through the light guide member. 前記導光部材が、被写体側の端部に照射面を有し、前記照明装置の取付け時において、前記照射面のうち前記中心軸から略水平方向に離れた水平領域に向けて前記照明光を放射する前記光源が、前記中心軸から略垂直方向に離れた領域である垂直領域に向けて前記照明光を放射する前記光源よりも短い間隔で配置されていることを特徴とする請求項４に記載の照明装置。   The light guide member has an irradiation surface at an end on the subject side, and when the lighting device is mounted, the illumination light is directed toward a horizontal region of the irradiation surface that is substantially horizontal away from the central axis. 5. The light source that emits light is disposed at a shorter interval than the light source that emits the illumination light toward a vertical region that is a region that is substantially perpendicular to the central axis. The lighting device described. 前記導光部材の前記被写体側の先端部が、前記レンズ鏡筒の中心軸方向において、前記反射部材よりも突出したフランジ部を有することを特徴とする請求項４に記載の照明装置。   The lighting device according to claim 4, wherein a distal end portion of the light guide member on the subject side includes a flange portion that protrudes from the reflection member in a central axis direction of the lens barrel. 前記導光部材が、前記光源から入射する照明光を拡散させる拡散性材料で構成されていることを特徴とする請求項４に記載の照明装置。   The lighting device according to claim 4, wherein the light guide member is made of a diffusive material that diffuses illumination light incident from the light source. 前記導光部材の内周面が、前記レンズ鏡筒の中心軸に略平行であることを特徴とする請求項４に記載の照明装置。   The lighting device according to claim 4, wherein an inner peripheral surface of the light guide member is substantially parallel to a central axis of the lens barrel. 前記照明装置の被写体側の先端部の内径が、前記レンズ鏡筒の内径と略等しいことを特徴とする請求項１に記載の照明装置。


The illumination device according to claim 1, wherein an inner diameter of a distal end portion on the subject side of the illumination device is substantially equal to an inner diameter of the lens barrel.


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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009294469A (en) * 2008-06-05 2009-12-17 Nikon Corp Illuminator for photography, and photographing device
WO2020091097A1 (en) * 2018-10-30 2020-05-07 덴탈에이스 주식회사 Lighting device for dental treatment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000035608A (en) * 1998-07-17 2000-02-02 Fine Opt Kk Close-up illumination device for compact charge coupling element camera
JP2001027780A (en) * 1999-07-14 2001-01-30 Moritex Corp Lens unit for close-up
JP2003177454A (en) * 2001-12-13 2003-06-27 Sonic Techno:Kk Ring light for camera illumination
JP2003233109A (en) * 2002-02-08 2003-08-22 Fuji Photo Film Co Ltd Camera

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000035608A (en) * 1998-07-17 2000-02-02 Fine Opt Kk Close-up illumination device for compact charge coupling element camera
JP2001027780A (en) * 1999-07-14 2001-01-30 Moritex Corp Lens unit for close-up
JP2003177454A (en) * 2001-12-13 2003-06-27 Sonic Techno:Kk Ring light for camera illumination
JP2003233109A (en) * 2002-02-08 2003-08-22 Fuji Photo Film Co Ltd Camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009294469A (en) * 2008-06-05 2009-12-17 Nikon Corp Illuminator for photography, and photographing device
WO2020091097A1 (en) * 2018-10-30 2020-05-07 덴탈에이스 주식회사 Lighting device for dental treatment

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