JP2009210837A - Flash apparatus and imaging apparatus - Google Patents
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Abstract
Description
本発明は、キセノン発光管から放射された光を被写体に照射するフラッシュ装置及びこのフラッシュ装置を備えた撮像装置に関するものである。 The present invention relates to a flash device that irradiates a subject with light emitted from a xenon arc tube and an imaging device including the flash device.
従来のフラッシュ装置は、ガラス管内にキセノンガスを封入したキセノン発光管と、キセノン発光管から放射される光を被写体に向けて照射するリフレクタとを備える。また、リフレクタは導電性の材料で形成される（例えば、特許文献１参照）。
このフラッシュ装置では、リフレクタをキセノン発光管に密着又は接近させて配置し、リフレクタに電圧をかけることによりガラス管内のキセノンガスをイオン化させ、キセノン発光管を発光させる。
A conventional flash device includes a xenon arc tube in which a xenon gas is sealed in a glass tube, and a reflector that irradiates light emitted from the xenon arc tube toward a subject. The reflector is made of a conductive material (see, for example, Patent Document 1).
In this flash device, the reflector is disposed in close contact with or close to the xenon arc tube, and voltage is applied to the reflector to ionize the xenon gas in the glass tube, thereby causing the xenon arc tube to emit light.
上述のフラッシュ装置において、キセノン発光管から放射された光の発光波長の一例を図４に示す。図４は、縦軸に発光の相対強度（％）、横軸に発光波長（ｎｍ）を示し、キセノン発光管の発光中のスペクトル分布を時間積分したものである。
図４に示すように、キセノン発光管から放射された光は、波長８００ｎｍ以上の近赤外において輝線スペクトルを有する。上述のフラッシュ装置において、キセノン発光管から放射された光は、キセノン発光管の前面に設けられたプロテクタを通る構成である。
また、このフラッシュ装置において、例えば、プロテクタの外側の体裁面を黒手袋等で触れた際、この体裁面に手袋の毛羽等が付着することがある。プロテクタの体裁面に毛羽等が付着した状態でフラッシュ装置を起動すると、上述のキセノン発光管の近赤外における輝線スペクトルにより、付着した毛羽から煙が発生してしまうことがある。
FIG. 4 shows an example of the emission wavelength of light emitted from the xenon arc tube in the above flash device. FIG. 4 shows the relative intensity (%) of light emission on the vertical axis and the emission wavelength (nm) on the horizontal axis, which is obtained by integrating the spectral distribution during light emission of the xenon arc tube.
As shown in FIG. 4, the light emitted from the xenon arc tube has an emission line spectrum in the near infrared with a wavelength of 800 nm or more. In the above flash device, the light emitted from the xenon arc tube passes through a protector provided in front of the xenon arc tube.
Further, in this flash device, for example, when the external appearance surface of the protector is touched with black gloves or the like, the fluff of the gloves may adhere to the appearance surface. When the flash device is activated in a state where fluff or the like is attached to the appearance of the protector, smoke may be generated from the attached fluff due to the near-infrared emission line spectrum of the xenon arc tube described above.
上述した問題の解決のため、本発明においては、フラッシュ装置に付着した毛羽等による煙の発生を防ぐことが可能な、フラッシュ装置及びフラッシュ装置を備えた撮像装置を提供する。 In order to solve the above-described problems, the present invention provides a flash device and an imaging device including the flash device that can prevent generation of smoke due to fluff or the like attached to the flash device.
本発明のフラッシュ装置は、ガラス管内にキセノンガスが封入されたキセノン発光管と、キセノン発光管の前部に備えられたプロテクタと、キセノン発光管とプロテクタとの間に介在された赤外線吸収部材とを備える。 The flash device of the present invention includes a xenon arc tube in which xenon gas is sealed in a glass tube, a protector provided at the front of the xenon arc tube, and an infrared absorbing member interposed between the xenon arc tube and the protector. Is provided.
本発明の撮像装置は、ガラス管内にキセノンガスが封入されたキセノン発光管と、キセノン発光管の前部に備えられたプロテクタと、キセノン発光管とプロテクタとの間に介在された赤外線吸収部材とを備えるフラッシュ装置と、被写体からの光に基づいて被写体光を結像する撮像光学系と、撮像光学系を通して結像された被写体像を撮像する撮像素子とを備える。 An imaging apparatus according to the present invention includes a xenon arc tube in which a xenon gas is sealed in a glass tube, a protector provided at the front of the xenon arc tube, and an infrared absorbing member interposed between the xenon arc tube and the protector. A flash device, an imaging optical system that forms an image of subject light based on light from the subject, and an imaging device that images the subject image formed through the imaging optical system.
本発明のフラッシュ装置及び撮像装置によれば、フラッシュ装置のキセノン発光管とプロテクタとの間に、赤外線吸収部材が介在される。この赤外線吸収部材により、フラッシュ装置を起動した際、キセノン発光管から放射される光から、毛羽等から煙が発生する原因となる赤外線を除去することができる。このため、フラッシュ装置の体裁面に毛羽等が付着していた場合の煙の発生を抑えることができる。 According to the flash device and the imaging device of the present invention, the infrared absorbing member is interposed between the xenon arc tube and the protector of the flash device. With this infrared absorbing member, it is possible to remove infrared rays that cause smoke from fluff and the like from the light emitted from the xenon arc tube when the flash device is activated. For this reason, generation | occurrence | production of smoke when fuzz etc. have adhered to the appearance of the flash apparatus can be suppressed.
本発明によれば、フラッシュ装置に毛羽等が付着していた場合でも、フラッシュ装置を起動した際の煙の発生を抑えることができる。 According to the present invention, even when fluff or the like is attached to the flash device, it is possible to suppress the generation of smoke when the flash device is activated.
以下、本発明のフラッシュ装置及びフラッシュ装置を備えた撮像装置の一実施の形態ついて図面を用いて説明する。
図１に本実施の形態に係わるフラッシュ装置を用いた撮像装置の一実験例を正面側から見た斜視図を示す。また、図２にフラッシュ装置の斜視図、図３に同じくフラッシュ装置の分解斜視図を示す。
Hereinafter, an embodiment of a flash device and an imaging device including the flash device according to the present invention will be described with reference to the drawings.
FIG. 1 shows a perspective view of an experimental example of an image pickup apparatus using the flash device according to the present embodiment as viewed from the front side. 2 is a perspective view of the flash device, and FIG. 3 is an exploded perspective view of the flash device.
図１は、カメラ一体型ＶＴＲに本実施の形態の撮像装置を適用したものである。このカメラ一体型ＶＴＲ２０は、略四角形の筐体からなる中空の外装ケース２１と、この外装ケース２１の一方の側面に着脱可能に装着されるバッテリー電源２２と、外装ケース２１の正面に配置される撮影レンズ２４を有する撮像光学系２３と、ファインダやタッチ操作パネルの機能をも兼ねる液晶ディスプレイ２５等を備えて構成されている。 FIG. 1 shows an application of the imaging apparatus of the present embodiment to a camera-integrated VTR. The camera-integrated VTR 20 is disposed in front of the exterior case 21, a hollow exterior case 21 having a substantially rectangular casing, a battery power source 22 that is detachably attached to one side surface of the exterior case 21. An imaging optical system 23 having a photographing lens 24, a liquid crystal display 25 that also functions as a viewfinder and a touch operation panel, and the like are provided.
外装ケース２１は、撮影レンズ２４とフォーカスリング２６が露出された正面部２１ａと、正面から見て右側の側面を形成する右側面部２１ｂと、左側の側面を形成する左側面部２１ｃと、図に現れない背面を形成する背面部及び底面を形成する底面部とから構成される。撮像光学系２３は外装ケース２１の上部に配設されていて、その後方にファインダが配置され、その周縁を囲むようにアイカップ２９が取り付けられている。 The exterior case 21 appears in the figure, a front part 21a from which the photographing lens 24 and the focus ring 26 are exposed, a right side part 21b that forms a right side as viewed from the front, and a left side part 21c that forms a left side. It is comprised from the back part which forms the back which does not exist, and the bottom part which forms a bottom face. The imaging optical system 23 is disposed on the upper part of the outer case 21, a finder is disposed behind the imaging optical system 23, and an eye cup 29 is attached so as to surround the periphery.
外装ケース２１の右側面部２１ｂの下部には電源収納部が設けられており、この電源収納部にバッテリー電源２２が着脱可能に装着されている。この右側面部２１ｂの上部には液晶ディスプレイ２５が収納される凹部が設けられており、その凹部を形成する正面側の凸部に液晶ディスプレイ２５がヒンジ手段３１によって回動自在に支持されている。これにより、液晶ディスプレイ２５は、図１に示す閉じた状態と、図示しない開いた状態を取ることが可能となっている。 A power storage unit is provided below the right side surface part 21b of the outer case 21, and a battery power source 22 is detachably attached to the power storage unit. A concave portion in which the liquid crystal display 25 is accommodated is provided at the upper portion of the right side surface portion 21b, and the liquid crystal display 25 is rotatably supported by a hinge means 31 on a front convex portion forming the concave portion. Thereby, the liquid crystal display 25 can be in the closed state shown in FIG. 1 and the open state (not shown).
外装ケース２１の上部には、右側面部２１ｂの上部と左側面部２１ｃの上部とで挟まれるように空間部が設けられている。この外装ケース２１の空間部内には、フォーカスリング２６に近い側から順にフラッシュ装置３３とマイクロホン装置３４とアクセサリーシュー３５とが配設されている。アクセサリーシュー３５の一端は背面側に開口されていて、外部のストロボ装置等のアクセサリーが着脱自在とされている。 A space is provided at the upper part of the outer case 21 so as to be sandwiched between the upper part of the right side part 21b and the upper part of the left side part 21c. A flash device 33, a microphone device 34, and an accessory shoe 35 are arranged in this space of the outer case 21 in order from the side close to the focus ring 26. One end of the accessory shoe 35 is opened on the back side, and an accessory such as an external strobe device is detachable.
フラッシュ装置３３は、カメラ一体型ＶＴＲ２０の撮像操作に連動して連続的に或いは間欠的に発光して被写体を照らし出すものである。このフラッシュ装置３３は、常時は外装ケース２１内に格納されていて、使用時にポップアップされて主に発光部が露出されるようになっている。
フラッシュ装置３３は、図２及び図３に示すように、プロテクタ３６と、赤外線吸収部材（ＩＲカットフィルタ）４２と、光源としてのキセノン発光管３７と、リフレクタ（反射鏡）３８と、ホルダ３９と、シールドゴム４０と、フレキシブルプリント配線板４１とを備えて構成されている。
The flash device 33 illuminates the subject by emitting light continuously or intermittently in conjunction with the imaging operation of the camera-integrated VTR 20. The flash device 33 is normally stored in the outer case 21 and is popped up when used to mainly expose the light emitting portion.
2 and 3, the flash device 33 includes a protector 36, an infrared absorbing member (IR cut filter) 42, a xenon arc tube 37 as a light source, a reflector (reflecting mirror) 38, and a holder 39. A shield rubber 40 and a flexible printed wiring board 41 are provided.
リフレクタ３８は、図３に示すように、上下に対向された略円筒状をなす一対の上面部３８ａ及び下面部３８ｂと、左右に対向された一対の側面部３８ｃ，３８ｄと、これらの背面側に連続された光源収納部４３とから構成されている。上下面部３８ａ，３８ｂと左右側面部３８ｃ，３８ｄは、背面側を狭めることによって開口部４４側が広げられた略ラッパのような断面形状をなしており、その背面側を閉じるように光源収納部４３が一体に設けられている。 As shown in FIG. 3, the reflector 38 includes a pair of upper and lower surfaces 38 a and 38 b that are formed in a substantially cylindrical shape that are vertically opposed to each other, a pair of side surfaces 38 c and 38 d that are opposed to the left and right, and the back surfaces thereof. And a light source storage portion 43 that is continuous with the light source. The upper and lower surface portions 38a, 38b and the left and right side surface portions 38c, 38d have a substantially trumpet-like cross-sectional shape in which the opening 44 side is widened by narrowing the back surface side, and the light source storage portion 43 so as to close the back surface side. Are provided integrally.
リフレクタ３８の上下面部３８ａ，３８ｂ及び光源収納部４３は、上下方向に対称となる形状とされている。この上下面部３８ａ，３８ｂの各内面が上下方向に対向された対をなす第１の反射面を構成し、光源収納部４３の内面が第２の反射面を構成する。これら第１の反射面、第２の反射面、及び、左右側面部３８ｃ，３８ｄの内面である第３の反射面は、光を良く反射できるように、例えば、鏡面加工等を施すことによって形成されている。 The upper and lower surface portions 38a and 38b and the light source storage portion 43 of the reflector 38 are shaped symmetrically in the vertical direction. The inner surfaces of the upper and lower surface portions 38a and 38b constitute a first reflecting surface that forms a pair opposed in the vertical direction, and the inner surface of the light source storage portion 43 constitutes a second reflecting surface. The first reflecting surface, the second reflecting surface, and the third reflecting surface, which is the inner surface of the left and right side surface portions 38c and 38d, are formed by, for example, applying a mirror finish so as to reflect light well. Has been.
光源収納部４３の両側面には、第２の反射面と同様の形状を有する穴４３ａが開口されている。この穴４３ａからキセノン発光管３７を出し入れすることにより、光源収納部４３の中央部に設けられ且つその内面が第２の反射面を構成する中央穴にキセノン発光管３７が着脱自在に装着される。
中央穴の内径はキセノン発光管３７の外径と略同一に設定されており、ほとんど緩みのない状態でキセノン発光管３７が中央穴に嵌り合うようにされている。
Holes 43 a having the same shape as that of the second reflecting surface are opened on both side surfaces of the light source storage portion 43. By inserting / removing the xenon arc tube 37 through the hole 43a, the xenon arc tube 37 is detachably mounted in the central hole provided in the central portion of the light source storage portion 43 and the inner surface of the second reflective surface. .
The inner diameter of the central hole is set to be substantially the same as the outer diameter of the xenon arc tube 37, and the xenon arc tube 37 is fitted in the central hole with almost no looseness.
光源としてのキセノン発光管３７は、高圧のキセノンガスが封入された円筒状のガラス管３７ａと、このガラス管３７ａの両端を閉じる２つの電極端子３７ｂ，３７ｃとを有している。このキセノン発光管３７をリフレクタ３８の光源収納部４３に挿入すると、ガラス管３７ａの両端部と２つの電極端子３７ｂ，３７ｃとが光源収納部４３の両側部から側方に突出される。 A xenon arc tube 37 as a light source includes a cylindrical glass tube 37a in which high-pressure xenon gas is sealed, and two electrode terminals 37b and 37c that close both ends of the glass tube 37a. When the xenon arc tube 37 is inserted into the light source storage portion 43 of the reflector 38, both end portions of the glass tube 37a and the two electrode terminals 37b and 37c are protruded laterally from both sides of the light source storage portion 43.
キセノン発光管３７が装着されたリフレクタ３８は、その背面に配置されるホルダ３９に装着されている。ホルダ３９は、断面形状が略コ字状をなす樋状の部材からなり、背面部３９ａとその両端に連続された上面部３９ｂ及び下面部３９ｃとで囲まれた凹部５５内にリフレクタ３８の光源収納部４３が挿入されて嵌合される。このホルダ３９の上面部３９ｂ及び下面部３９ｃには、プロテクタ３６を係合保持するための係合爪５６ａと、プロテクタ３６を所定深さに位置決めするための複数の位置決め突部５６ｂがそれぞれ設けられている。ホルダ３９の材質としては、例えば、ＡＢＳ樹脂（アクリロニトリル・ブタジエン・スチレン樹脂）が好適であるが、これに限定されるものではなく、他のプラスチックは勿論のこと、プラスチック以外の金属等を用いることもできる。 The reflector 38 to which the xenon arc tube 37 is attached is attached to a holder 39 disposed on the back surface thereof. The holder 39 is formed of a bowl-shaped member having a substantially U-shaped cross-section, and the light source of the reflector 38 is disposed in a concave portion 55 surrounded by a back surface portion 39a and an upper surface portion 39b and a lower surface portion 39c connected to both ends thereof. The storage part 43 is inserted and fitted. An engaging claw 56a for engaging and holding the protector 36 and a plurality of positioning protrusions 56b for positioning the protector 36 at a predetermined depth are provided on the upper surface 39b and the lower surface 39c of the holder 39, respectively. ing. The material of the holder 39 is preferably, for example, ABS resin (acrylonitrile / butadiene / styrene resin), but is not limited thereto, and other plastics as well as metals other than plastics are used. You can also.
このホルダ３９とリフレクタ３８が、シールドゴム４０により締め付けられて一体的に固定されている。シールドゴム４０は、キセノン発光管３７の両端を支持する一対の支持部４０ａ，４０ａと、両支持部４０ａ，４０ａを連結する連結部４０ｂとからなり、弾性を有する材料によって一体に構成されている。一対の支持部４０ａ，４０ａには、キセノン発光管３７の各端部が挿入される支持穴４０ｃがそれぞれ設けられている。このシールドゴム４０の材質としては、例えば、シリコンゴムが好適であるが、他のゴム状弾性部材を用いることができることは勿論である。 The holder 39 and the reflector 38 are fastened together by a shield rubber 40 and fixed integrally. The shield rubber 40 includes a pair of support portions 40a and 40a that support both ends of the xenon arc tube 37, and a connection portion 40b that connects both the support portions 40a and 40a, and is integrally formed of an elastic material. . The pair of support portions 40a and 40a are provided with support holes 40c into which the respective ends of the xenon arc tube 37 are inserted. As a material of the shield rubber 40, for example, silicon rubber is suitable, but it is needless to say that other rubber-like elastic members can be used.
シールドゴム４０の背面には、キセノン発光管３７に電力を供給する電源との間を電気的に接続するためのフレキシブルプリント配線板４１が配設されている。フレキシブルプリント配線板４１は、キセノン発光管３７の軸方向両端に突出された電極端子３７ｂ，３７ｃに接続される電極端子部４１ａ，４１ａと、リフレクタ３８に接続されるアース端子部４１ｂを有している。これらの端子部４１ａ，４１ａ及び４１ｂを電極端子３７ｂ，３７ｃ及びリフレクタ３８に接続することにより、電気的な接続が行われる。 On the back surface of the shield rubber 40, a flexible printed wiring board 41 for electrically connecting a power source that supplies power to the xenon arc tube 37 is disposed. The flexible printed wiring board 41 has electrode terminal portions 41 a and 41 a connected to electrode terminals 37 b and 37 c protruding from both ends of the xenon arc tube 37 in the axial direction, and a ground terminal portion 41 b connected to the reflector 38. Yes. By connecting these terminal portions 41a, 41a and 41b to the electrode terminals 37b and 37c and the reflector 38, electrical connection is performed.
このリフレクタ３８の前部には、透明な材料で形成されたプロテクタ３６が着脱自在に装着される。プロテクタ３６は、リフレクタ３８の光源収納部４３の中途部から前側を覆う一面にのみ開口された本体部３６ａと、光源収納部４３に収納されたキセノン発光管３７の電極端子３７ｂ，３７ｃの外側を覆うカバー部３６ｂ，３６ｂとからなり、正面にはフレネルレンズ部５７が設けられている。そして、本体部３６ａの上面と下面には、ホルダ３９の上下の係合爪５６ａにそれぞれ係合される係合穴５８が設けられている。 A protector 36 made of a transparent material is detachably attached to the front portion of the reflector 38. The protector 36 has a main body 36 a that is opened only on one surface covering the front side from the middle portion of the light source storage portion 43 of the reflector 38, and outside the electrode terminals 37 b and 37 c of the xenon arc tube 37 stored in the light source storage portion 43. It consists of cover parts 36b and 36b to cover, and a Fresnel lens part 57 is provided in the front. Further, on the upper surface and the lower surface of the main body portion 36a, engagement holes 58 that are respectively engaged with the upper and lower engagement claws 56a of the holder 39 are provided.
キセノン発光管３７とプロテクタ３６との間には、赤外線吸収部材４２が挿入されている。赤外線吸収部材４２は、１種類以上の赤外線吸収化合物と、赤外線吸収化合物が溶解又は分散されるバインダー樹脂とを備える。
また、赤外線吸収部材４２は、１種類以上の赤外線吸収化合物と、赤外線吸収化合物が溶解又は分散されたバインダー樹脂が、透光性を有する基材に膜形成されて構成される。
An infrared absorbing member 42 is inserted between the xenon arc tube 37 and the protector 36. The infrared absorbing member 42 includes at least one infrared absorbing compound and a binder resin in which the infrared absorbing compound is dissolved or dispersed.
The infrared absorbing member 42 is configured by forming a film of one or more types of infrared absorbing compounds and a binder resin in which the infrared absorbing compounds are dissolved or dispersed on a light-transmitting substrate.
赤外線吸収化合物としては、例えば、アミニウム系、アゾ系、アジン系、アントラキノン系、インジゴイド系、オキサジン系、キノフタロニン系、スクワリウム系、スチルベン系、トリフェニルメタン系、ナフトキノン系、ジイミニウム系、フタロシアニン系、シアニン系等の有機色素化合物を用いることができる。 Examples of infrared absorbing compounds include aminium, azo, azine, anthraquinone, indigoid, oxazine, quinophthalonine, squalium, stilbene, triphenylmethane, naphthoquinone, diiminium, phthalocyanine, cyanine Organic dye compounds such as those of the type can be used.
キセノン発光管３７から放射される光の発光波長は、図４に一例を示すように、可視光領域以外に波長８００ｎｍ〜１０００ｎｍの近赤外において輝線スペクトルを有する。フラッシュ装置３３のプロテクタ３６の外側に位置する体裁面に毛羽等が付着していた場合に発生する煙は、この波長８００ｎｍ〜１０００ｎｍの輝線スペクトルが原因と考えられる。
このため、上述の赤外線吸収部材４２は、キセノン発光管の輝線スペクトルの領域である波長８００ｎｍ〜１０００ｎｍの、赤外線を吸収する赤外線吸収化合物が用いられる。
The emission wavelength of the light emitted from the xenon arc tube 37 has an emission line spectrum in the near infrared region with a wavelength of 800 nm to 1000 nm in addition to the visible light region, as shown in FIG. The smoke generated when fluff or the like is attached to the appearance surface located outside the protector 36 of the flash device 33 is considered to be caused by the emission line spectrum having a wavelength of 800 nm to 1000 nm.
Therefore, an infrared absorbing compound that absorbs infrared rays having a wavelength of 800 nm to 1000 nm, which is the region of the emission line spectrum of the xenon arc tube, is used for the infrared absorbing member 42 described above.
特にキセノン発光管３７から放射される光の発光波長において、特に強い輝線スペクトルである波長９００ｎｍ付近の赤外線を、赤外線吸収部材により除去することで、プロテクタ３６体裁面に付着した毛羽等による煙の発生を抑えることができる。
特に、赤外線吸収部材の波長９００ｎｍにおける赤外線の透過率が、４０％以上６０％以下であることが好ましい。
波長９００ｎｍにおける透過率が６０％より大きいと、赤外線の吸収率が低すぎるため、プロテクタ体裁面に付着した毛羽等からの煙の発生を抑えることが難しい。また、透過率が４０％未満では、赤外線吸収化合物が赤外線を吸収しすぎるため、フラッシュ装置を連続して点灯した場合の赤外線吸収部材の発熱が大きい。そして、この発熱により、赤外線吸収剤に焦げ等が発生する。この赤外線吸収部材の焦げは、赤外線吸収剤の損傷となり、フラッシュ装置の発光性能の劣化を招く。また、赤外線吸収部材に発生する焦げは、フラッシュ装置の体裁上好ましくない。
In particular, in the emission wavelength of the light emitted from the xenon arc tube 37, the generation of smoke due to fluff or the like attached to the surface of the protector 36 by removing infrared rays having a wavelength of 900 nm, which is a particularly strong emission line spectrum, with an infrared absorbing member. Can be suppressed.
In particular, the infrared transmittance of the infrared absorbing member at a wavelength of 900 nm is preferably 40% or more and 60% or less.
If the transmittance at a wavelength of 900 nm is larger than 60%, the infrared absorption rate is too low, and it is difficult to suppress the generation of smoke from fuzz and the like attached to the protector surface. Further, when the transmittance is less than 40%, the infrared absorbing compound absorbs infrared rays too much, so that the infrared absorbing member generates a large amount of heat when the flash device is continuously turned on. This heat generation causes scorching or the like in the infrared absorber. This scorching of the infrared absorbing member causes damage to the infrared absorbing agent, leading to deterioration of the light emitting performance of the flash device. In addition, scoring that occurs in the infrared absorbing member is not preferable in terms of the appearance of the flash device.
また、赤外線吸収部材は波長８００ｎｍにおける透過率が７０％以上であることが好ましい。波長８００ｎｍにおける透過率が７０％未満では、赤外線吸収化合物が赤外線を吸収しすぎる。このため、フラッシュ装置を連続して点灯した場合の赤外線吸収部材の発熱が大きく、発熱により赤外線吸収剤に焦げ等が発生する。
また、赤外線吸収部材は波長８００ｎｍにおける透過率が高いほど、赤外線吸収化合物の赤外線の吸収が少ないため、赤外線吸収部材の発熱を抑えることができる。このため、赤外線吸収部材の波長８００ｎｍにおける透過率が高く、透過率が１００％に近いほど、フラッシュ装置を連続して点灯した場合の赤外線吸収部材の発熱を抑え、赤外線吸収剤の焦げ等が発生を抑えることができる。
この赤外線吸収部材の焦げは、赤外線吸収剤の損傷となり、フラッシュ装置の発光性能の劣化を招く。また、赤外線吸収部材に発生する焦げは、フラッシュ装置の体裁上好ましくない。
さらに、波長８００ｎｍにおける透過率を７０％以上とすることにより、赤外線吸収部材４２を挿入することによるフラッシュ装置の光量の低下を抑えることができる。このため、ガイドナンバ（ＧＮ）の低下を抑えることができる。
The infrared absorbing member preferably has a transmittance at a wavelength of 800 nm of 70% or more. When the transmittance at a wavelength of 800 nm is less than 70%, the infrared absorbing compound absorbs infrared rays too much. For this reason, when the flash device is continuously turned on, the infrared absorbing member generates a large amount of heat, and the infrared absorber is burnt due to the generated heat.
Moreover, since the infrared absorption member has less infrared absorption of the infrared absorption compound as the transmittance at a wavelength of 800 nm is higher, heat generation of the infrared absorption member can be suppressed. For this reason, the higher the transmittance of the infrared absorbing member at a wavelength of 800 nm and the closer the transmittance is to 100%, the more heat generation of the infrared absorbing member when the flash device is continuously turned on is suppressed, and the infrared absorbent is burnt. Can be suppressed.
This scorching of the infrared absorbing member causes damage to the infrared absorbing agent, leading to deterioration of the light emitting performance of the flash device. In addition, scoring that occurs in the infrared absorbing member is not preferable in terms of the appearance of the flash device.
Furthermore, by setting the transmittance at a wavelength of 800 nm to 70% or more, it is possible to suppress a decrease in the light amount of the flash device due to the insertion of the infrared absorbing member 42. For this reason, it is possible to suppress a decrease in the guide number (GN).
上述の赤外線吸収化合物において、波長９００ｎｍでの透過率が４０％以上６０％以下であり、波長８００ｎｍでの透過率が７０％以上である特性の赤外線吸収化合物としては、例えばジイミニウム系の有機色素化合物を挙げることができる。このため、ジイミニウム系の有機色素化合物を適当な濃度でバインダー樹脂に溶解又は分散させ、赤外線吸収部材として用いることにより、上述の波長特性を有する赤外線吸収部材を作製することができる。 In the infrared absorbing compound described above, the infrared absorbing compound having a characteristic that the transmittance at a wavelength of 900 nm is 40% or more and 60% or less and the transmittance at a wavelength of 800 nm is 70% or more, for example, a diiminium-based organic dye compound Can be mentioned. Therefore, an infrared absorbing member having the above-described wavelength characteristics can be produced by dissolving or dispersing a diiminium-based organic dye compound in a binder resin at an appropriate concentration and using it as an infrared absorbing member.
また、赤外線吸収部材に使用するバインダー樹脂としては、透光性を有していれば特に制限はないが、例えば、アクリル樹脂、ポリウレタン樹脂、ポリ塩化ビニル樹脂、エポキシ樹脂、ポリ酢酸ビニル樹脂、ポリスチレン樹脂、セルロース、ポリブチラール樹脂、ポリエステル樹脂、ポリイミド樹脂等を用いることができる。また、これらの樹脂を２種以上ブレンドしたポリマーブレンドをバインダー樹脂としても用いてもよい。 The binder resin used for the infrared absorbing member is not particularly limited as long as it has translucency. For example, acrylic resin, polyurethane resin, polyvinyl chloride resin, epoxy resin, polyvinyl acetate resin, polystyrene Resin, cellulose, polybutyral resin, polyester resin, polyimide resin, or the like can be used. A polymer blend obtained by blending two or more of these resins may be used as the binder resin.
また、赤外線吸収化合物が溶解又は分散されたバインダー樹脂が膜付けされる透光性を有する基材としては、透光性を有する材料で形成されていれば、その形状や製造方法等について特に制限はない。基材としては、例えば、ポリエステル系樹脂、ポリカーボネート系樹脂、ポリアクリル酸エステル系樹脂、脂環式ポリオレフィン系樹脂、ポリスチレン系樹脂、ポリ塩化ビニル系樹脂、ポリ酢酸ビニル系樹脂、ポリエーテルスルホン酸系樹脂、トリアセチルセルロース系樹脂等の樹脂、又は、ガラス等の透光性を有する無機材料をフィルム状又はシート状に加工したものを用いることができる。特に、透光性が高く、加工性が良好なことから、ポリエチレンテレフタレート（ＰＥＴ）、ポリエチレンナフタレート（ＰＥＮ）を用いることが好ましい。また、ＰＥＮはＰＥＴに比べ、耐熱性が高く耐久性に優れている。また、ガラス等の透光性の無機材料は樹脂に比べ熱伝導率が高く放熱性に優れる。このため、赤外線の吸収により発生する熱を、効率よく放熱することができ、赤外線吸収部材の耐久性を向上させることができる。 In addition, as a light-transmitting substrate on which a binder resin in which an infrared absorbing compound is dissolved or dispersed is formed, as long as it is formed of a light-transmitting material, its shape, manufacturing method, and the like are particularly limited. There is no. Examples of the base material include polyester resins, polycarbonate resins, polyacrylate resins, alicyclic polyolefin resins, polystyrene resins, polyvinyl chloride resins, polyvinyl acetate resins, and polyether sulfonic acids. A resin, a resin such as a triacetyl cellulose-based resin, or a light-transmitting inorganic material such as glass processed into a film shape or a sheet shape can be used. In particular, polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) are preferably used because of their high translucency and good workability. PEN has higher heat resistance and superior durability than PET. In addition, a light-transmitting inorganic material such as glass has higher thermal conductivity and better heat dissipation than resin. For this reason, the heat which generate | occur | produces by absorption of infrared rays can be thermally radiated efficiently, and durability of an infrared rays absorption member can be improved.
なお、上述の透光性を有する基材を使用せず、キセノン発光管３７のガラス管３７ａ、又は、プロテクタ３６に赤外線吸収化合物とバインダー樹脂とを、直接膜形成することもできる。ただし、フレネルレンズ部５７が設けられた体裁面に膜付けすると、フラッシュ装置を使用する際に膜付け部分を指や爪で触ることより、赤外線吸収部材の膜が剥がれる可能性が高くなる。従って、プロテクタ３６に直接赤外線吸収部材を膜付けする場合には、赤外線吸収部材の膜が、プロテクタ３６のキセノン発光管３７を備える内面側に膜付されることが好ましい。また、ガラス管３７ａに直接赤外線吸収部材を膜付けする場合は、ガラス等の無機材料に赤外線吸収部材を膜付した場合と同様に放熱性が良くなり、赤外線吸収部材の耐久性を向上させることができる。 Note that the infrared absorbing compound and the binder resin may be directly formed on the glass tube 37a of the xenon arc tube 37 or the protector 36 without using the above-described base material having translucency. However, if the film is formed on the appearance surface provided with the Fresnel lens part 57, the film of the infrared absorbing member is more likely to be peeled off by touching the filmed part with a finger or a nail when using the flash device. Therefore, when the infrared absorbing member is directly formed on the protector 36, it is preferable that the film of the infrared absorbing member is formed on the inner surface side of the protector 36 including the xenon arc tube 37. Further, when the infrared ray absorbing member is directly attached to the glass tube 37a, the heat dissipation is improved as in the case where the infrared ray absorbing member is attached to an inorganic material such as glass, and the durability of the infrared ray absorbing member is improved. Can do.
図５は、本実施の形態に係わる撮像装置の概略構成を示すブロック図である。
この撮像装置１０は、撮影レンズ２４を有する撮像光学系２３と、制御装置の中心的役割を果す映像信号記録／再生部７０と、その映像信号記録／再生部７０を駆動するためのプログラムメモリやデータメモリその他のＲＡＭやＲＯＭ等を有する内部メモリ７１と、撮影された映像等を所定の信号に処理する映像信号処理部７２と、撮影された映像等を表示する平面表示パネル（液晶ディスプレイ）２５と、記憶容量を拡大する外部メモリ（メモリカード）７３と、撮像レンズ２４を駆動制御するアクチュエータ駆動部７４等を備えて構成されている。
FIG. 5 is a block diagram illustrating a schematic configuration of the imaging apparatus according to the present embodiment.
The imaging apparatus 10 includes an imaging optical system 23 having a photographing lens 24, a video signal recording / reproducing unit 70 that plays a central role of a control device, a program memory for driving the video signal recording / reproducing unit 70, An internal memory 71 having a data memory or other RAM, ROM, etc., a video signal processing unit 72 for processing captured video or the like into a predetermined signal, and a flat display panel (liquid crystal display) 25 for displaying the captured video or the like And an external memory (memory card) 73 that expands the storage capacity, an actuator driving unit 74 that drives and controls the imaging lens 24, and the like.
撮像光学系２３は、撮影レンズ２４の他に、例えば、シャッター、絞り機構等から構成され、被写体画像を撮像素子８０に導く。撮像素子８０は、例えば、ＣＣＤ(Charge Coupled Device)イメージセンサやＣＭＯＳ（Complementary Metal Oxide Semiconductor）イメージセンサ等からなり、撮像光学系２３を通して結像された被写体光を光電変換することにより、信号として出力する。映像信号記録／再生部７０は、例えば、マイクロコンピュータ（ＣＰＵ）を有する演算回路等を備えて構成されている。この映像信号記録／再生部７０に、内部メモリ７１と映像信号処理部７２とモニタ駆動部７５と撮影レンズ用の制御部７６と２つのインタフェース（Ｉ／Ｆ）７７，７８が接続されている。映像信号処理部７２は、撮像レンズ２４に取り付けられた撮像素子８０に増幅器８１を介して接続されている。この映像信号処理部７２で所定の映像信号に処理された信号が映像信号記録／再生部７０に入力される。 The imaging optical system 23 includes, for example, a shutter and a diaphragm mechanism in addition to the photographing lens 24, and guides the subject image to the imaging element 80. The imaging element 80 is composed of, for example, a CCD (Charge Coupled Device) image sensor, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, or the like, and outputs the signal as a signal by photoelectrically converting subject light imaged through the imaging optical system 23. To do. The video signal recording / reproducing unit 70 includes, for example, an arithmetic circuit having a microcomputer (CPU). Connected to the video signal recording / reproducing unit 70 are an internal memory 71, a video signal processing unit 72, a monitor driving unit 75, a control unit 76 for a photographing lens, and two interfaces (I / F) 77 and 78. The video signal processing unit 72 is connected to an imaging device 80 attached to the imaging lens 24 via an amplifier 81. A signal processed into a predetermined video signal by the video signal processing unit 72 is input to the video signal recording / reproducing unit 70.
平面表示パネル２５は、モニタ駆動部７５を介して映像信号記録／再生部７０に接続されている。第１のインタフェース（Ｉ／Ｆ）７７にはコネクタ８２が接続されており、このコネクタ８２に外部メモリ７３が着脱自在に接続可能とされている。また、第２のインタフェース（Ｉ／Ｆ）７８には、撮像装置１０に設けられた接続端子８３が接続されている。そして、制御部７６には、レンズを駆動させるアクチュエータ（レンズ）駆動部７４と、指令信号や制御信号等を入力操作するための操作部８４が接続されている。 The flat display panel 25 is connected to the video signal recording / reproducing unit 70 via the monitor driving unit 75. A connector 82 is connected to the first interface (I / F) 77, and an external memory 73 can be detachably connected to the connector 82. In addition, a connection terminal 83 provided in the imaging apparatus 10 is connected to the second interface (I / F) 78. The control unit 76 is connected to an actuator (lens) driving unit 74 that drives the lens and an operation unit 84 for inputting a command signal, a control signal, and the like.
被写体の像が撮像光学系２３の撮像レンズ２４に入力されて撮像素子８０の結像面に結像されると、その画像信号が増幅器８１を介して映像信号処理部７２に入力される。この映像信号処理部７２で所定の映像信号に処理された信号が、映像信号記録／再生部７０に入力される。これにより、映像信号記録／再生部７０から被写体の像に対応した信号がモニタ駆動部７５、内部メモリ７１若しくは外部メモリ７３に出力される。その結果、モニタ駆動部７５を介して平面表示パネル２５に被写体の像に対応した画像が表示され、或いは、必要により情報信号として内部メモリ７１若しくは外部メモリ７３に記録される。 When the subject image is input to the imaging lens 24 of the imaging optical system 23 and formed on the imaging surface of the imaging device 80, the image signal is input to the video signal processing unit 72 via the amplifier 81. A signal processed into a predetermined video signal by the video signal processing unit 72 is input to the video signal recording / reproducing unit 70. As a result, a signal corresponding to the subject image is output from the video signal recording / reproducing unit 70 to the monitor driving unit 75, the internal memory 71, or the external memory 73. As a result, an image corresponding to the image of the subject is displayed on the flat display panel 25 via the monitor driving unit 75, or is recorded as an information signal in the internal memory 71 or the external memory 73 as necessary.
このような構成を有する撮像装置１０の内部に、撮像レンズ２４や平面表示パネル２５等を駆動制御する制御装置が内蔵されている。制御装置は、例えば、配線基板上に所定のマイクロコンピュータ、抵抗やコンデンサその他の電子部品等を搭載することによって構成される。 A control device that drives and controls the imaging lens 24, the flat display panel 25, and the like is built in the imaging device 10 having such a configuration. The control device is configured, for example, by mounting a predetermined microcomputer, a resistor, a capacitor, or other electronic components on a wiring board.
以下、本実施の形態の説明に基づいて実際に赤外線吸収部材を作製し、本発明を具体的に説明する。
（実験例１）
赤外線吸収部材に用いるバインダー樹脂として、ポリアクリル酸エステル樹脂を作製した。
まず、撹拌機、温度計、還流冷却管、滴下ロート及び窒素ガス導入管が接続された四つ口フラスコに、酢酸エチル１２０質量部を投入した。
次に、酢酸エチルを窒素ガス気流下で加熱し、６５℃に昇温したところで、メチルメタクリレート５０質量部、４−メチルシクロヘキシルメチルメタクリレート４３質量部、ブチルアクリレート５質量部、メタクリル酸１質量部、２−ヒドロキシエチルメタクリレート１質量部、及び、アゾビスイソブチロニトリル（ＡＩＢＮ）０．２５質量部からなる混合物を２時間かけて滴下した。
さらに同じ温度で４時間保持し、不揮発分４４．６質量％のポリアクリル酸エステル樹脂溶液を得た。得られたポリアクリル酸エステル樹脂の重合体の数平均分子量は約３０万であった。
Hereinafter, an infrared absorbing member is actually produced based on the description of the present embodiment, and the present invention will be specifically described.
(Experimental example 1)
A polyacrylate resin was prepared as a binder resin used for the infrared absorbing member.
First, 120 parts by mass of ethyl acetate was charged into a four-necked flask to which a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen gas introduction tube were connected.
Next, when ethyl acetate was heated under a nitrogen gas stream and heated to 65 ° C., 50 parts by mass of methyl methacrylate, 43 parts by mass of 4-methylcyclohexylmethyl methacrylate, 5 parts by mass of butyl acrylate, 1 part by mass of methacrylic acid, A mixture composed of 1 part by mass of 2-hydroxyethyl methacrylate and 0.25 part by mass of azobisisobutyronitrile (AIBN) was added dropwise over 2 hours.
Furthermore, it hold | maintained at the same temperature for 4 hours, and obtained the polyacrylic acid ester resin solution of non-volatile matter 44.6 mass%. The number average molecular weight of the polymer of the obtained polyacrylic ester resin was about 300,000.
次に、赤外線吸収化合物としてジイミニウム塩（日本カーリット株式会社製 ＣＩＲ−１０８５）０．７質量部と、酸化防止剤としてホスファイト系酸化防止剤（旭電化工業株式会社 アデカスタブ１１７８）０．１質量部を、有機溶剤（メチルエチルケトン７０質量部とトルエン３０質量部との混合溶媒）８質量部に溶解し、赤外線吸収化合物溶液を準備した。 Next, 0.7 parts by mass of a diiminium salt (CIR-1085 manufactured by Nippon Carlit Co., Ltd.) as an infrared absorbing compound, and 0.1 parts by mass of a phosphite antioxidant (Asahi Denka Kogyo Co., Ltd., Adeka Stub 1178) as an antioxidant Was dissolved in 8 parts by mass of an organic solvent (mixed solvent of 70 parts by mass of methyl ethyl ketone and 30 parts by mass of toluene) to prepare an infrared absorbing compound solution.
次に、フィルムアプリケータを使用し、厚さ１００μｍの高透明性ポリエステルフィルム基材（東洋紡績製「コスモシャインＡ４１００」）上に、上述のポリアクリル酸エステル樹脂と赤外線吸収化合物溶液とを混ぜ合わせて、乾燥後の膜厚が１０μｍになるように塗布した。
次に、ポリアクリル酸エステル樹脂と赤外線吸収化合物溶液との混合物が塗布された基材をオーブンに入れて１５０℃５分間乾燥した。
以上の方法により、透光性の基材上に形成された、実験例１の赤外線吸収部材を作製した。
Next, using the film applicator, the above-mentioned polyacrylic ester resin and the infrared ray absorbing compound solution are mixed on a highly transparent polyester film substrate (Toyobo Cosmo Shine A4100) having a thickness of 100 μm. The film thickness after drying was 10 μm.
Next, the substrate coated with the mixture of the polyacrylate resin and the infrared absorbing compound solution was placed in an oven and dried at 150 ° C. for 5 minutes.
By the above method, the infrared absorbing member of Experimental Example 1 formed on a translucent substrate was produced.
（実験例２）
ジイミニウム塩（日本カーリット株式会社製 ＣＩＲ−１０８５）１．０質量部と、酸化防止剤としてホスファイト系酸化防止剤（旭電化工業株式会社 アデカスタブ１１７８）０．１質量部を、有機溶剤（メチルエチルケトン７０質量部とトルエン３０質量部との混合溶媒）８質量部に溶解して赤外線吸収化合物溶液を作製した以外は、上述の実験例１と同様の方法で、実験例２の赤外線吸収部材を作製した。
(Experimental example 2)
1.0 part by mass of diiminium salt (CIR-1085 manufactured by Nippon Carlit Co., Ltd.) and 0.1 part by mass of a phosphite-based antioxidant (Asahi Denka Kogyo Co., Ltd., Adeka Stub 1178) as an antioxidant, an organic solvent (methyl ethyl ketone 70) The infrared absorbing member of Experimental Example 2 was prepared in the same manner as in Experimental Example 1 except that an infrared absorbing compound solution was prepared by dissolving in 8 parts by mass of a mixed solvent of 30 parts by mass of toluene and 30 parts by mass of toluene. .
（実験例３）
ジイミニウム塩（日本カーリット株式会社製 ＣＩＲ−１０８５）１．３質量部と、酸化防止剤としてホスファイト系酸化防止剤（旭電化工業株式会社 アデカスタブ１１７８）０．１質量部を、有機溶剤（メチルエチルケトン７０質量部とトルエン３０質量部との混合溶媒）８質量部に溶解して赤外線吸収化合物溶液を作製した以外は、上述の実験例１と同様の方法で、実験例３の赤外線吸収部材を作製した。
(Experimental example 3)
1.3 parts by weight of a diiminium salt (CIR-1085 manufactured by Nippon Carlit Co., Ltd.) and 0.1 parts by weight of a phosphite-based antioxidant (Asahi Denka Kogyo Co., Ltd., Adeka Stub 1178) as an antioxidant are mixed with an organic solvent (methyl ethyl ketone 70). The infrared absorbing member of Experimental Example 3 was prepared in the same manner as in Experimental Example 1 except that the infrared absorbing compound solution was prepared by dissolving in 8 parts by mass of a mixed solvent of 30 parts by mass of toluene and 30 parts by mass of toluene. .
（実験例４）
厚さ１００μｍの高透明性ポリエステルフィルム基材（東洋紡績製「コスモシャインＡ４１００」）上に、日本油脂社製の色素吸着膜（リアルックＮ８０）を１０μｍの厚さに形成し、実験例４の赤外線吸収部材を作製した。
(Experimental example 4)
On a 100 μm thick highly transparent polyester film substrate (“Cosmo Shine A4100” manufactured by Toyobo Co., Ltd.), a dye adsorption film (Rialc N80) manufactured by Nippon Oil & Fats Co., Ltd. is formed to a thickness of 10 μm. An absorbent member was produced.
（実験例５）
厚さ１００μｍの高透明性ポリエステルフィルム基材（東洋紡績製「コスモシャインＡ４１００」）上に、高屈折率の膜と低屈折率の膜とを合計８層重ね合わせて１０μｍの厚さに積層したエツミ社製の赤外線吸収蒸着膜（型名 ８Ｌ）を用いて、実験例５の赤外線吸収部材を作製した。
(Experimental example 5)
A total of 8 layers of a high refractive index film and a low refractive index film were laminated on a highly transparent polyester film substrate (Toyobo Cosmo Shine A4100) having a thickness of 100 μm to a thickness of 10 μm. The infrared absorption member of Experimental Example 5 was produced using an infrared absorption vapor deposition film (type name: 8L) manufactured by Etsumi.
実験例１〜５で作製した赤外線吸収部材について、分光光度計を用いてそれぞれ分光特性を測定した。測定した実験例１〜３の赤外線吸収部材の分光特性を図６に示す。また、測定した実験例４の赤外線吸収部材の分光特性を図７に示し、実験例５の赤外線吸収部材の分光特性を図８に示す。図６〜８は、縦軸に赤外線吸収部材の透過率（％）示し、横軸に発光波長（ｎｍ）を示す。 About the infrared absorption member produced in Experimental Examples 1-5, the spectral characteristic was measured, respectively using the spectrophotometer. The measured spectral characteristics of the infrared absorbing members of Experimental Examples 1 to 3 are shown in FIG. Moreover, the measured spectral characteristic of the infrared absorption member of Experimental Example 4 is shown in FIG. 7, and the spectral characteristic of the infrared absorption member of Experimental Example 5 is shown in FIG. 6 to 8, the vertical axis represents the transmittance (%) of the infrared absorbing member, and the horizontal axis represents the emission wavelength (nm).
また、実験例１〜５で作製した赤外線吸収部材を、上述の図２及び図３を用いて説明したフラッシュ装置３３の赤外線吸収部材４２にそれぞれ適用し、下記の方法で発煙対策効果試験、及び、耐久性試験を行った。 Moreover, the infrared absorption member produced in Experimental Examples 1 to 5 was applied to the infrared absorption member 42 of the flash device 33 described with reference to FIGS. A durability test was conducted.
〔発煙対策効果試験〕
発煙対策効果試験は、図２に示すプロテクタ３６の体裁面に、粉末状に加工した鉛筆（ＨＢ）の芯（黒鉛）を塗布し、ガイドナンバ（ＧＮ）５の光量でフラッシュを照射した。このフラッシュの照射により、プロテクタ体裁面に塗布した粉末状の芯からの煙の発生状態を、下記の判断基準を用いて５段階で評価した。発煙対策効果試験の結果を表１に示す。
１：全く煙が発生しない
２：塗布した黒鉛の５％程度から煙が発生した。
３：塗布した黒鉛の３０％程度から煙が発生した。
４：塗布した黒鉛の７０％程度から煙が発生した。
５：ほぼすべての黒鉛から煙が発生した。
[Smoke countermeasure test]
In the anti-smoke effect test, a pencil (HB) core (graphite) processed into a powder form was applied to the appearance of the protector 36 shown in FIG. 2, and the flash was irradiated with the light amount of the guide number (GN) 5. By this flash irradiation, the state of smoke generation from the powdered core applied to the protector face was evaluated in five stages using the following criteria. The results of the smoke generation countermeasure effect test are shown in Table 1.
1: No smoke generated 2: Smoke was generated from about 5% of the applied graphite.
3: Smoke was generated from about 30% of the applied graphite.
4: Smoke was generated from about 70% of the applied graphite.
5: Smoke was generated from almost all graphite.
〔耐久性試験〕
耐久性試験は、ガイドナンバ（ＧＮ）５の光量において、１５秒間隔でフラッシュを３０００回照射した後、赤外線吸収部材の焦げ等による損傷を調べた。赤外線吸収部材に焦げ等の損傷が発生しなかった場合を○とし、焦げ等の損傷が発生した場合を×として、結果を表１に示す。また、耐久性試験を行った後の、実験例１の赤外線吸収部材の状態の写真を図９に示す。同様に、耐久性試験を行った後の、実験例４の赤外線吸収部材の状態を図１０に示し、実験例５の赤外線吸収部材の状態を図１１に示す。
[Durability test]
In the durability test, after irradiating the flash 3000 times at intervals of 15 seconds with the light amount of the guide number (GN) 5, the damage of the infrared absorbing member due to scoring or the like was examined. The results are shown in Table 1, where ◯ indicates that no damage such as scorch has occurred on the infrared absorbing member, and x indicates that damage such as scorch has occurred. Moreover, the photograph of the state of the infrared rays absorption member of Experimental example 1 after performing a durability test is shown in FIG. Similarly, the state of the infrared absorbing member of Experimental Example 4 after performing the durability test is shown in FIG. 10, and the state of the infrared absorbing member of Experimental Example 5 is shown in FIG.
また、実験例１〜３及び実験例４，５で作製した赤外線吸収部材を適用したフラッシュ装置について、それぞれ露光量誤差（ΔＥＶ）を求めた。ΔＥＶは、下記の式（１）を用いてガイドナンバから算出した。ΔＥＶの算出結果を表１に示す。 Moreover, the exposure error (ΔEV) was determined for each of the flash devices to which the infrared absorbing members manufactured in Experimental Examples 1 to 3 and Experimental Examples 4 and 5 were applied. ΔEV was calculated from the guide number using the following formula (1). Table 1 shows the calculation result of ΔEV.
表１に示すように、実験例１の赤外線吸収部材は、耐久性試験の結果が良好である。
図６〜８に分光特性を示したように、実験例１の赤外線吸収部材は、他の赤外線吸収部材に比べて透過率が一番高く、図４で説明したキセノン発光管の輝線スペクトルの近傍である波長８００ｎｍにおける透過率が約７８％であり、波長９００ｎｍにおける透過率が約５９％である。このように、赤外線の透過率が高く、赤外線の吸収による赤外線吸収部材の発熱が少ないため、耐久性試験の結果がよくなったと考えられる。また、図９に示す、耐久性試験を行った後のフラッシュ装置の様子を示す写真では、実験例１の赤外線吸収部材の耐久性試験の結果が良好であるため、フラッシュ装置の体裁に、焦げ等の損傷による変化がない。
As shown in Table 1, the infrared ray absorbing member of Experimental Example 1 has a good durability test result.
As shown in FIGS. 6 to 8, the infrared absorbing member of Experimental Example 1 has the highest transmittance compared to other infrared absorbing members, and is close to the emission line spectrum of the xenon arc tube described with reference to FIG. 4. The transmittance at a wavelength of 800 nm is about 78%, and the transmittance at a wavelength of 900 nm is about 59%. In this way, it is considered that the durability test result was improved because the infrared transmittance is high and the infrared absorbing member does not generate much heat due to the absorption of infrared rays. Further, in the photograph showing the state of the flash device after the durability test shown in FIG. 9, since the result of the durability test of the infrared absorbing member of Experimental Example 1 is good, the appearance of the flash device is burnt. There is no change due to damage such as.
また、実験例１の赤外線吸収部材は、発煙対策効果試験の結果、３０％程度の黒鉛から煙が発生した。従って、実験例１の赤外線吸収部材によれば、７０％程度の黒鉛からの煙の発生を抑えられたことがわかる。
実験例１の赤外線吸収部材は、図６〜８に分光特性を示したように、他の赤外線吸収部材に比べて、波長８００ｎｍにおける透過率が比較的高い。このため、塗布した黒鉛の３０％程度から煙が発生したと考えられる。
Moreover, as for the infrared rays absorption member of Experimental example 1, as a result of the smoke generation countermeasure effect test, smoke was generated from about 30% of graphite. Therefore, according to the infrared ray absorbing member of Experimental Example 1, it can be seen that generation of smoke from about 70% of graphite was suppressed.
As shown in FIGS. 6 to 8, the infrared absorbing member of Experimental Example 1 has a relatively high transmittance at a wavelength of 800 nm compared to other infrared absorbing members. For this reason, it is considered that smoke was generated from about 30% of the applied graphite.
また、表１に示すように、実験例２の赤外線吸収部材は、耐久性試験の結果が良好である。これは、図６に示した分光特性から、実験例２の赤外線吸収部材は、波長８００ｎｍにおける透過率が約７６％であり、波長９００ｎｍにおける透過率が約５０％である。このため、実験例２の赤外線吸収部材は、波長８００ｎｍ以上の帯域の吸収が少なく、この帯域の赤外線の吸収による赤外線吸収部材の発熱が少なくなるので、耐久性試験の結果がよくなったと考えられる。 Moreover, as shown in Table 1, the result of a durability test is favorable for the infrared absorbing member of Experimental Example 2. From the spectral characteristics shown in FIG. 6, the infrared absorbing member of Experimental Example 2 has a transmittance of about 76% at a wavelength of 800 nm and a transmittance of about 50% at a wavelength of 900 nm. For this reason, the infrared absorbing member of Experimental Example 2 has little absorption in the wavelength band of 800 nm or more, and heat generation of the infrared absorbing member due to absorption of infrared rays in this band is reduced. Therefore, it is considered that the result of the durability test is improved. .
また、実験例２の赤外線吸収部材は、発煙対策効果試験の結果、５％程度の黒鉛から煙が発生した。従って、実験例２の赤外線吸収部材によれば、９５％程度の黒鉛からの煙の発生を抑えられたことがわかる。
実験例２の赤外線吸収部材は、実験例１の赤外線吸収部材に比べ、波長８００ｎｍ及び波長９００ｎｍの透過率が低い。このため、実験例２の赤外線吸収部材は、実験例１の赤外線吸収部材よりも黒鉛からの煙の発生を抑えることができたと考えられる。
Moreover, as for the infrared absorption member of Experimental Example 2, smoke was generated from about 5% of graphite as a result of the smoke generation countermeasure effect test. Therefore, it can be seen that according to the infrared absorbing member of Experimental Example 2, generation of smoke from about 95% of graphite was suppressed.
Compared with the infrared absorbing member of Experimental Example 1, the infrared absorbing member of Experimental Example 2 has low transmittance at a wavelength of 800 nm and a wavelength of 900 nm. For this reason, it is considered that the infrared absorbing member of Experimental Example 2 was able to suppress the generation of smoke from graphite more than the infrared absorbing member of Experimental Example 1.
また、実験例３の赤外線吸収部材は、表１に示すように、耐久性試験の結果が良好である。これは、図６に示した分光特性から、実験例３の赤外線吸収部材は、波長８００ｎｍにおける透過率が約７１％であり、波長９００ｎｍにおける透過率が約４０％である。このため、赤外線の吸収による赤外線吸収部材の発熱が少なく、耐久性試験の結果がよくなったと考えられる。 In addition, as shown in Table 1, the infrared absorbing member of Experimental Example 3 has good durability test results. From the spectral characteristics shown in FIG. 6, the infrared absorbing member of Experimental Example 3 has a transmittance of about 71% at a wavelength of 800 nm and a transmittance of about 40% at a wavelength of 900 nm. For this reason, there is little heat_generation | fever of the infrared rays absorption member by absorption of infrared rays, and it is thought that the result of the durability test improved.
また、実験例３の赤外線吸収部材は、発煙対策効果試験の結果、５％程度の黒鉛から煙が発生した。従って、実験例３の赤外線吸収部材によれば、９５％程度の黒鉛からの煙の発生を抑えられたことがわかる。
実験例３の赤外線吸収部材は、実験例１の赤外線吸収部材に比べ、波長８００ｎｍ及び波長９００ｎｍの透過率が低い。このため、実験例３の赤外線吸収部材は、実験例１の赤外線吸収部材よりも黒鉛からの煙の発生を抑えることができたと考えられる。
Further, as a result of the smoke generation countermeasure effect test, smoke was generated from about 5% of the graphite of the infrared absorbing member of Experimental Example 3. Therefore, it can be seen that according to the infrared absorbing member of Experimental Example 3, generation of smoke from about 95% of graphite was suppressed.
Compared with the infrared absorbing member of Experimental Example 1, the infrared absorbing member of Experimental Example 3 has low transmittance at a wavelength of 800 nm and a wavelength of 900 nm. For this reason, it is considered that the infrared absorbing member of Experimental Example 3 was able to suppress the generation of smoke from graphite than the infrared absorbing member of Experimental Example 1.
実験例４の赤外線吸収部材は、発煙対策効果試験の結果が良好であったが、耐久性試験の結果が悪かった。
図７に示した分光特性から、実験例４の赤外線吸収部材は、波長８００ｎｍにおける透過率が約６９％程度である。このように、実験例４の赤外線吸収部材は、フラッシュ装置を連続点灯した際の、発光管からの赤外線の吸収量が多い。このため、赤外線吸収部材の発熱が大きくなる。従って、赤外線吸収部材に焦げ等の損傷が発生しやすい。
図１０に示す耐久性試験を行った後のフラッシュ装置の様子を示す写真では、フラッシュ装置のプロテクタの中央付近が、図９の写真に比べて黒く変色している。この黒く変色した部分が、赤外線吸収部材の焦げによる損傷を表す。また、赤外線吸収部材の焦げた部分の図面右端において白く変色した部分は、赤外線吸収部材の発熱によりプロテクタが損傷した部分である。
従って、図１０より、実験例４の赤外線吸収部材は、耐久性試験の結果、赤外線吸収部材の中央付近に広く焦げによる損傷が発生したことがわかる。
In the infrared absorbing member of Experimental Example 4, the result of the anti-smoke effect test was good, but the result of the durability test was bad.
From the spectral characteristics shown in FIG. 7, the infrared absorbing member of Experimental Example 4 has a transmittance of about 69% at a wavelength of 800 nm. Thus, the infrared absorption member of Experimental Example 4 has a large amount of infrared absorption from the arc tube when the flash device is continuously lit. For this reason, the heat generation of the infrared absorbing member is increased. Therefore, damage such as scorching is likely to occur in the infrared absorbing member.
In the photograph showing the state of the flash device after the durability test shown in FIG. 10, the vicinity of the center of the protector of the flash device is discolored black compared to the photograph of FIG. This black discolored portion represents damage due to scorching of the infrared absorbing member. In addition, a white-colored portion at the right end of the burned portion of the infrared absorbing member is a portion where the protector is damaged due to heat generation of the infrared absorbing member.
Therefore, it can be seen from FIG. 10 that the infrared absorbing member of Experimental Example 4 was extensively damaged by scorching near the center of the infrared absorbing member as a result of the durability test.
一方、図７に示した分光特性から、実験例４の赤外線吸収部材は、波長９００ｎｍにおける透過率が約４３％程度である。このため、赤外線吸収部材により波長９００ｎｍ付近の輝線スペクトルを充分に除去することができ、プロテクタに塗布した黒鉛からの煙の発生を防ぐことができたと考えられる。この結果、実験例４の赤外線吸収部材は、発煙対策効果試験で良好な結果が得られたと考えられる。 On the other hand, from the spectral characteristics shown in FIG. 7, the infrared absorbing member of Experimental Example 4 has a transmittance of about 43% at a wavelength of 900 nm. For this reason, it is considered that the bright line spectrum near the wavelength of 900 nm can be sufficiently removed by the infrared absorbing member, and the generation of smoke from the graphite applied to the protector can be prevented. As a result, the infrared absorbing member of Experimental Example 4 is considered to have obtained good results in the smoke generation effect test.
実験例５の赤外線吸収部材は、耐久性試験が悪い結果となった。また、発煙対策効果試験において、３０％程度若しくは７０％程度の黒鉛から煙が発生した。従って、実験例５の赤外線吸収部材によれば、７０％程度若しくは３０％程度の黒鉛からの煙の発生を抑えられたことがわかる。
図８に示した分光特性から、実験例５の赤外線吸収部材は、波長８００ｎｍにおける透過率が約４０％程度であり、波長９００ｎｍにおける透過率が約３０％程度である。
また、図１１に示す耐久性試験を行った後の、フラッシュ装置の様子を示す写真では、フラッシュ装置のプロテクタの中央付近が図９の写真に比べて黒く変色している。この黒く変色した部分が、赤外線吸収部材の焦げによる損傷を表す。また、赤外線吸収部材の焦げた部分の中央付近で白く変色した部分は、赤外線吸収部材の発熱によりプロテクタが損傷した部分である。
従って、図１１より、実験例５の赤外線吸収部材は、耐久性試験の結果、赤外線吸収部材の中央付近に焦げが発生したことがわかる。
The infrared absorption member of Experimental Example 5 had a poor durability test. Further, in the smoke generation effect test, smoke was generated from about 30% or 70% of graphite. Therefore, according to the infrared ray absorbing member of Experimental Example 5, it can be seen that generation of smoke from about 70% or about 30% of graphite was suppressed.
From the spectral characteristics shown in FIG. 8, the infrared absorbing member of Experimental Example 5 has a transmittance of about 40% at a wavelength of 800 nm and a transmittance of about 30% at a wavelength of 900 nm.
Further, in the photograph showing the state of the flash device after the durability test shown in FIG. 11, the vicinity of the center of the protector of the flash device is discolored black compared to the photograph of FIG. This black discolored portion represents damage due to scorching of the infrared absorbing member. Moreover, the part discolored in white near the center of the burnt part of the infrared absorbing member is a part where the protector is damaged by heat generation of the infrared absorbing member.
Therefore, it can be seen from FIG. 11 that the infrared absorbing member of Experimental Example 5 was burned near the center of the infrared absorbing member as a result of the durability test.
上述のように、実験例５の赤外線吸収部材は、他の実験例に比べて、波長８００ｎｍ及び波長９００ｎｍにおける透過率が一番低いにも係わらず、発煙対策効果試験の結果が悪い。これは、実験例５の赤外線吸収部材が、蒸着膜が積層された構成であるためと考えられる。実験例５の赤外線吸収部材は、高屈折率の膜と低屈折率の膜とを合計８層重ね合わせた構成である。そして、赤外線を積層膜で反射し、さらに、フラッシュ装置内において、赤外線吸収部材と反射板との間で赤外線を往復させることにより、赤外線を減衰させて除去する構成である。この構成では、赤外線がフラッシュ装置内を往復するため、内部に熱がこもりやすく、高熱が発生しやすい構造となってしまう。このため、実験例５の赤外線吸収部材は、発煙対策効果試験において黒鉛から煙が発生しやすく、また、耐久性試験において焦げ等の損傷が発生しやすいと考えられる。 As described above, the infrared-absorbing member of Experimental Example 5 has a poor result of the anti-smoke effect test despite the lowest transmittance at wavelengths of 800 nm and 900 nm as compared with the other experimental examples. This is considered because the infrared absorption member of Experimental Example 5 has a configuration in which vapor deposition films are stacked. The infrared absorbing member of Experimental Example 5 has a configuration in which a total of eight layers of a high refractive index film and a low refractive index film are stacked. The infrared ray is reflected by the laminated film, and further, the infrared ray is attenuated and removed by reciprocating the infrared ray between the infrared absorbing member and the reflecting plate in the flash device. In this configuration, since infrared rays reciprocate in the flash device, heat tends to be trapped inside, and high heat is likely to be generated. For this reason, it is considered that the infrared absorbing member of Experimental Example 5 is likely to generate smoke from graphite in the smoke generation countermeasure effect test, and is likely to be damaged such as scorch in the durability test.
上述の発煙対策効果試験の結果より、プロテクタとキセノン発光管との間に赤外線吸収部材を介在させることで、プロテクタの外側の体裁面に付着した黒鉛からの煙の発生を抑えることが可能となる。このため、プロテクタの外側の体裁面に付着した毛羽等による煙の発生を防ぐことができる。なお、上述の発煙対策効果試験では黒鉛を使用しているため、実用上でフラッシュ装置の表面に毛羽等が付着した状態に比べ、煙が発生しやすい条件となっている。従って、上述の発煙対策効果試験のうち、全く煙が発生しないという結果が得られなかった条件でも、実用上は問題ない。 From the result of the above-mentioned smoke generation countermeasure effect test, it becomes possible to suppress the generation of smoke from the graphite adhering to the outer surface of the protector by interposing the infrared absorbing member between the protector and the xenon arc tube. . For this reason, generation | occurrence | production of the smoke by the fluff etc. which adhered to the external appearance surface of the protector can be prevented. In the above-mentioned smoke generation countermeasure effect test, graphite is used, so that it is a condition where smoke is more likely to be generated in comparison with a state in which fluff or the like adheres to the surface of the flash device. Therefore, there is no practical problem even under the above-mentioned smoke generation countermeasure effect test even if the result that no smoke is generated is obtained.
また、赤外線吸収部材の波長８００ｎｍにおける透過率を７０％以上とし、波長９００ｎｍにおける透過率を４０％以上６０％以下とすることにより、赤外線吸収部材の焦げ等による損傷を防ぐことが可能である。このため、赤外線吸収部材の透過率を上述の範囲とすることで、プロテクタの外側の体裁面に付着した毛羽等からの煙の発生を抑える効果と、赤外線吸収部材の耐久性の向上とを両立させることができる。 In addition, by setting the transmittance of the infrared absorbing member at a wavelength of 800 nm to 70% or more and the transmittance at a wavelength of 900 nm to 40% or more and 60% or less, it is possible to prevent damage to the infrared absorbing member due to scoring or the like. For this reason, by setting the transmittance of the infrared absorbing member in the above-described range, both the effect of suppressing the generation of smoke from fuzz and the like attached to the outer surface of the protector and the improvement of the durability of the infrared absorbing member are achieved. Can be made.
本発明は、上述の構成に限定されるものではなく、本発明の要旨を逸脱しない範囲でその他様々な構成が取り得る。 The present invention is not limited to the above-described configuration, and various other configurations can be employed without departing from the gist of the present invention.
１０ 撮像装置、２０ カメラ一体型ＶＴＲ、２１ 外装ケース、２１ａ 正面部、２１ｂ 右側面部、２１ｃ 左側面部、２２ バッテリー電源、２３ 撮像光学系、２４ 撮影レンズ、２５ 液晶ディスプレイ、２６ フォーカスリング、２９ アイカップ、３１ ヒンジ手段、３３ フラッシュ装置、３４ マイクロホン装置、３５ アクセサリーシュー、３６ プロテクタ、３７ キセノン発光管、３７ａ ガラス管、３７ｂ，３７ｃ 電極端子、３８ リフレクタ、３８ａ，３９ｂ 上面部、３８ｂ，３９ｃ 下面部、３８ｃ，３８ｄ 側面部、３９ ホルダ、３９ａ 背面部、４０ シールドゴム、４０ａ，４０ａ 支持部、４０ｂ 連結部、４１ フレキシブルプリント配線板、４１ａ，４１ａ 電極端子部、４１ｂ アース端子部、４２ 赤外線吸収部材、４３ 光源収納部、４３ａ 穴、４４ 開口部、５５ 凹部、５６ａ 係合爪、５６ｂ 突部、５８ 係合穴、７０ 映像信号記録／再生部、７１ 内部メモリ、７２ 映像信号処理部、７３ 外部メモリ、７４ アクチュエータ駆動部、７５ モニタ駆動部、７６ 制御部、７７ 第１のインタフェース（Ｉ／Ｆ）、７８ 第２のインタフェース（Ｉ／Ｆ）、８０ 撮像素子、８１ 増幅器、８２ コネクタ、８３ 接続端子、８４ 操作部 DESCRIPTION OF SYMBOLS 10 Imaging device, 20 Camera integrated VTR, 21 Exterior case, 21a Front part, 21b Right side part, 21c Left side part, 22 Battery power supply, 23 Imaging optical system, 24 Shooting lens, 25 Liquid crystal display, 26 Focus ring, 29 Eye cup , 31 Hinge means, 33 Flash device, 34 Microphone device, 35 Accessory shoe, 36 Protector, 37 Xenon arc tube, 37a Glass tube, 37b, 37c Electrode terminal, 38 Reflector, 38a, 39b Upper surface portion, 38b, 39c Lower surface portion, 38c, 38d Side face part, 39 holder, 39a Back face part, 40 shield rubber, 40a, 40a support part, 40b connecting part, 41 flexible printed wiring board, 41a, 41a electrode terminal part, 41b ground terminal part, 42 infrared absorption Member, 43 light source housing, 43a hole, 44 opening, 55 recess, 56a engaging claw, 56b protrusion, 58 engaging hole, 70 video signal recording / reproducing unit, 71 internal memory, 72 video signal processing unit, 73 External memory, 74 Actuator drive unit, 75 Monitor drive unit, 76 Control unit, 77 First interface (I / F), 78 Second interface (I / F), 80 Image sensor, 81 Amplifier, 82 Connector, 83 Connection terminal, 84 operation section
Claims (7)
前記キセノン発光管の前部に備えられたプロテクタと、
前記キセノン発光管と前記プロテクタとの間に介在された赤外線吸収部材と
を備えるフラッシュ装置。 A xenon arc tube with xenon gas sealed in a glass tube,
A protector provided at the front of the xenon arc tube;
An infrared ray absorbing member interposed between the xenon arc tube and the protector.
被写体からの光に基づいて被写体光を結像する撮像光学系と、
前記撮像光学系を通して結像された被写体像を撮像する撮像素子と
を備える撮像装置。 A flash apparatus comprising: a xenon arc tube in which a xenon gas is sealed in a glass tube; a protector provided at a front portion of the xenon arc tube; and an infrared absorbing member interposed between the xenon arc tube and the protector. When,
An imaging optical system for imaging subject light based on light from the subject;
An image pickup device comprising: an image pickup device that picks up a subject image formed through the image pickup optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008054118A JP2009210837A (en) | 2008-03-04 | 2008-03-04 | Flash apparatus and imaging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008054118A JP2009210837A (en) | 2008-03-04 | 2008-03-04 | Flash apparatus and imaging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2009210837A true JP2009210837A (en) | 2009-09-17 |
Family
ID=41184058
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019054938A1 (en) * | 2017-09-18 | 2019-03-21 | Profoto Aktiebolag | A flash housing for emitting flash light for photographic purposes and a method performed in a flash housing |
| US11003052B2 (en) | 2016-10-17 | 2021-05-11 | Citizen Electronics Co., Ltd. | Mobile device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11003052B2 (en) | 2016-10-17 | 2021-05-11 | Citizen Electronics Co., Ltd. | Mobile device |
| WO2019054938A1 (en) * | 2017-09-18 | 2019-03-21 | Profoto Aktiebolag | A flash housing for emitting flash light for photographic purposes and a method performed in a flash housing |
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