JP3022295B2 - Variable illumination angle flash device - Google Patents
Variable illumination angle flash deviceInfo
- Publication number
- JP3022295B2 JP3022295B2 JP8001092A JP109296A JP3022295B2 JP 3022295 B2 JP3022295 B2 JP 3022295B2 JP 8001092 A JP8001092 A JP 8001092A JP 109296 A JP109296 A JP 109296A JP 3022295 B2 JP3022295 B2 JP 3022295B2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- reflector
- irradiation angle
- irradiation
- flash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光源からの閃光に
よる照射対象に対する照射角が変えられる照射角可変閃
光装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination angle variable flash device which can change an illumination angle of an object to be irradiated by flash light from a light source.
【０００２】[0002]
【従来の技術】従来から、カメラなどの撮影装置により
被写体を撮影する際には、被写体の照明用として、使用
する撮影レンズの撮影画角に応じて照射角が変えられる
照射角可変ストロボなどの照射角可変閃光装置が、しば
しば使用されている。2. Description of the Related Art Conventionally, when an object is photographed by a photographing device such as a camera, an illumination angle variable strobe or the like for changing the irradiation angle in accordance with the angle of view of a photographing lens to be used for illuminating the object. Variable-angle flash devices are often used.
【０００３】従来の照射角可変閃光装置の一例として
は、特開昭５５−１２９３２６号公報に開示されたもの
で、図５（ａ）に示すように、被写体照明用の光源とし
て反射傘４３内にＸｅ管などのように閃光を発する閃光
放電管Ｓを配設し、この閃光放電管Ｓを、使用する撮影
レンズの撮影画角に応じて、光軸Ｋ上において反射傘４
３から距離Ｌａの位置と、図５（ｂ）に示すように、反
射傘４３から距離Ｌｂの位置との間を移動させて、閃光
放電管Ｓと反射傘４３との位置関係を変化させることに
より、閃光放電管Ｓからの閃光による被写体に対する照
射角が変えられるように構成されたものが知られてい
る。One example of a conventional flash device with variable irradiation angle is disclosed in Japanese Patent Application Laid-Open No. 55-129326. As shown in FIG. Is provided with a flash discharge tube S such as a Xe tube, which emits flash light, and the flash discharge tube S is disposed on the optical axis K on the optical axis K in accordance with the angle of view of a shooting lens to be used.
5 and the position of the distance Lb from the reflector 43 to change the positional relationship between the flash discharge tube S and the reflector 43, as shown in FIG. 5B. Is known so that the irradiation angle of the flash light from the flash discharge tube S to the subject can be changed.
【０００４】また他の例としては、特開平２−２９１５
３８号公報に開示されたもので、図６に示すように、広
角撮影を行うワイド時に、光軸Ｋ上において反射傘５３
から距離Ｌｃに位置する閃光放電管などの光源Ｐと、反
射傘５３の開口面に位置するフレネルレンズＦとを、望
遠撮影を行うテレ時においては、光源Ｐを光軸Ｋ上にお
いて反射傘５３から距離Ｌｄの位置に、フレネルレンズ
Ｆを反射傘５３の開口面から距離Ｌｆの位置に、それぞ
れ移動させて、光源Ｐと反射傘５３とフレネルレンズＦ
との位置関係を変化させることにより、光源Ｐからの閃
光による被写体に対する照射角が変えられるように構成
されたものが知られている。[0004] Another example is disclosed in Japanese Patent Application Laid-Open No. 2-2915.
As shown in FIG. 6, when a wide-angle shooting is performed, a reflector 53
A light source P such as a flash discharge tube located at a distance Lc from the camera and a Fresnel lens F located at the opening surface of the reflector 53 are placed on the optical axis K during telephoto shooting for telephoto shooting. , The Fresnel lens F is moved from the opening surface of the reflector 53 to a position at a distance Lf from the light source P, the reflector 53 and the Fresnel lens F, respectively.
Are known so that the irradiation angle of the flash light from the light source P to the subject can be changed by changing the positional relationship between the object and the subject.
【０００５】上記の照射角可変閃光装置においては、閃
光放電管ＳやフレネルレンズＦを移動させるための駆動
機構として、溝とその溝内で移動する移動ピンを設け、
これら溝と移動ピンとの位置関係を変化させて閃光放電
管ＳやフレネルレンズＦを移動させ、閃光放電管と反射
傘との距離やフレネルレンズと反射傘との距離などを変
化させることにより、閃光放電管Ｓなどの光源Ｐからの
閃光による被写体に対する照射角が変えられる。In the above-mentioned variable irradiation angle flash device, a groove and a moving pin which moves in the groove are provided as a drive mechanism for moving the flash discharge tube S and the Fresnel lens F.
By changing the positional relationship between these grooves and the moving pins to move the flash discharge tube S or the Fresnel lens F, and changing the distance between the flash discharge tube and the reflector or the distance between the Fresnel lens and the reflector, the flash light is changed. The irradiation angle of the flash light from the light source P such as the discharge tube S to the subject is changed.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記のよ
うな従来の照射角可変閃光装置では、図５に示す従来例
（特開昭５５−１２９３２６号公報に開示されたも
の）、および図６に示す従来例（特開平２−２９１５３
８号公報に開示されたもの）のどちらの場合でも、被写
体に対する照射角を変える際には、閃光放電管と反射傘
との距離やフレネルレンズと反射傘との距離などを変化
させるため、閃光放電管ＳやフレネルレンズＦを移動さ
せる必要があり、この場合には、そのために駆動機構と
して設けられた溝と移動ピンとの位置関係を変化させる
ように構成されている。However, in the above-mentioned conventional flash device with variable irradiation angle, a conventional example shown in FIG. 5 (disclosed in Japanese Patent Application Laid-Open No. 55-129326) and a device shown in FIG. Conventional example (JP-A-2-29153)
In either case, when changing the irradiation angle with respect to the subject, the distance between the flash discharge tube and the reflector or the distance between the Fresnel lens and the reflector is changed. It is necessary to move the discharge tube S and the Fresnel lens F. In this case, the positional relationship between the groove provided as a driving mechanism and the moving pin is changed.
【０００７】そのためには、基本的に溝と移動ピンとの
間に隙間を必要とし、この隙間分が閃光放電管Ｓの移動
動作時においてガタとして働き、閃光放電管Ｓの移動動
作を高精度に行うことが困難となり、反射傘に対する閃
光放電管の位置決めを正確に行うことが困難になるとい
う問題点を有していた。For this purpose, a gap is basically required between the groove and the moving pin, and this gap acts as a play during the moving operation of the flash discharge tube S, so that the moving operation of the flash discharge tube S can be performed with high precision. However, there is a problem that it becomes difficult to accurately perform positioning of the flash discharge tube with respect to the reflector.
【０００８】本発明は、上記のような問題点を考慮して
なしたもので、閃光光源の移動動作を高精度に制御し
て、反射傘に対する閃光光源の位置決めを正確に行うこ
とができ、使用する撮影レンズの撮影画角に応じて、被
写体に対する適切な照射角を得ることができる照射角可
変閃光装置を提供する。The present invention has been made in consideration of the above-described problems, and can control the movement of the flash light source with high accuracy to accurately position the flash light source with respect to the reflector. Provided is an illumination angle variable flash device that can obtain an appropriate illumination angle for a subject in accordance with an imaging angle of view of an imaging lens to be used.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するた
め、本発明の請求項１に記載の照射角可変閃光装置は、
閃光を発する光源とその閃光を反射する反射傘とを備
え、光源からの直接光および反射光による照射対象への
照射の際に、光源と反射傘とで形成する光軸上における
それらの位置関係を変化させて、前記照射対象に対する
照射角を変更可能とした照射角可変閃光装置において、
任意の１点を支点にして前記光軸方向に揺動自在に構成
され、前記揺動により光源と反射傘との前記位置関係が
変化するように光源を保持する光源保持手段と、光源保
持手段に当接するように配設され、その当接状態で光源
保持手段に対して前記揺動を与えるように構成され、前
記照射対象で必要な照射角が得られるように、光源保持
手段の揺動量を制御して、前記揺動による光源と反射傘
との前記位置関係を変化させる照射角制御手段と、光源
保持手段と照射角制御手段とが常に前記当接状態となる
方向に、光源保持手段に対して付勢する付勢手段とを備
えた構成とする。In order to solve the above-mentioned problems, a variable-angle flash device according to claim 1 of the present invention comprises:
It has a light source that emits flash light and a reflector that reflects the flash light, and when irradiating an irradiation target with direct light and reflected light from the light source, their positional relationship on the optical axis formed by the light source and the reflector. By changing the irradiation angle with respect to the irradiation target in the irradiation angle variable flash device,
A light source holding unit configured to be swingable in the optical axis direction with an arbitrary point as a fulcrum, and holding the light source such that the positional relationship between the light source and the reflector is changed by the swing; and a light source holding unit. Are arranged so as to contact the light source holding means in the contact state, and the amount of swing of the light source holding means is adjusted so that a required irradiation angle is obtained at the irradiation target. Irradiating angle control means for changing the positional relationship between the light source and the reflector by the swing, and the light source holding means in such a direction that the light source holding means and the irradiation angle control means are always in the contact state. And an urging means for urging the member.
【００１０】この構成によると、照射角制御手段が、そ
れと当接する光源保持手段に対して、その当接点を通じ
て光源保持手段の揺動量を制御し、その揺動量に応じ
て、光源保持手段がその支点を中心に揺動し、その揺動
に伴って光源保持手段に保持された光源も光軸上を移動
して、光源と反射傘との位置関係を変化させ、照射対象
に対してそれが必要とする照射角を与える。According to this configuration, the irradiation angle control means controls the swing amount of the light source holding means through the contact point with respect to the light source holding means which contacts the light source holding means, and the light source holding means controls the swing amount according to the swing amount. The light source swings around the fulcrum, and the light source held by the light source holding means also moves on the optical axis with the swing, changing the positional relationship between the light source and the reflector, and causing the light source to irradiate the light source. Provide the required illumination angle.
【００１１】このようにして、光源保持手段が揺動する
際には、付勢手段が、光源保持手段と照射角制御手段と
が常に当接状態となる方向に、光源保持手段に対して付
勢し、光源保持手段と照射角制御手段との当接点のガタ
を無くす。In this manner, when the light source holding means swings, the urging means is attached to the light source holding means in such a direction that the light source holding means and the irradiation angle control means are always in contact with each other. And eliminates play at the contact point between the light source holding means and the irradiation angle control means.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を示す
照射角可変閃光装置について、図面を参照しながら説明
する。なおここでは、照射角可変閃光装置を、カメラな
どの撮影装置により被写体を撮影する際に、その被写体
に対するストロボ照明用として使用する場合について説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A variable irradiation angle flash device according to an embodiment of the present invention will be described below with reference to the drawings. Here, a description will be given of a case where the variable irradiation angle flash device is used for strobe lighting of a subject when the subject is photographed by a photographing device such as a camera.
【００１３】図１は本実施の形態を示す照射角可変閃光
装置の側面から見た構成図であり、その構成をより分か
り易くするため、図１に示す照射角可変閃光装置の背面
から見た構成図を図２に示す。なお、図１と図２との間
において、同一のものには同一の符号を付している。FIG. 1 is a structural view of a variable illumination angle flash device according to the present embodiment, as viewed from the side. In order to make the configuration easier to understand, the configuration is viewed from the back of the variable illumination angle flash device shown in FIG. The configuration diagram is shown in FIG. 1 and 2, the same components are denoted by the same reference numerals.
【００１４】図１に示すように、本実施の形態の照射角
可変閃光装置は、基本的には、閃光を発する光源として
の閃光放電管１０と、その閃光を反射する反射傘１１と
を備え、閃光放電管１０からの直接光および反射光によ
る照射対象への照射の際に、閃光放電管１０と反射傘１
１とで形成する光軸Ｋ上におけるそれらの位置関係を変
化させて、照射対象に対する照射角の変更を可能とする
ものである。As shown in FIG. 1, the illuminating angle variable flash device of the present embodiment basically includes a flash discharge tube 10 as a light source for emitting a flash and a reflector 11 for reflecting the flash. When irradiating an irradiation target with direct light and reflected light from the flash discharge tube 10, the flash discharge tube 10 and the reflector 1
By changing the positional relationship on the optical axis K formed by the light emitting device 1 and the light emitting device 1, the irradiation angle with respect to the irradiation target can be changed.
【００１５】図１において、４は光源保持手段としての
放電管保持部材であり、回転軸７を支点として光軸Ｋ方
向に矢印Ｃのように揺動自在に構成され、その揺動によ
り閃光放電管１０と反射傘１１との光軸Ｋ上での位置関
係が変化するように閃光放電管１０を保持する。In FIG. 1, reference numeral 4 denotes a discharge tube holding member as a light source holding means, which is swingable in the direction of the optical axis K as indicated by an arrow C with the rotating shaft 7 as a fulcrum. The flash discharge tube 10 is held so that the positional relationship between the tube 10 and the reflector 11 on the optical axis K changes.
【００１６】Ｋ３は照射角制御手段であり、放電管保持
部材４に当接するように配設され、その当接状態で放電
管保持部材４に対してその揺動を与えるように構成さ
れ、照射対象で必要な照射角が得られるように、放電管
保持部材４の揺動量を制御して、その揺動による閃光放
電管１０と反射傘１１との光軸Ｋ上での位置関係を変化
させる。K3 is an irradiation angle control means, which is disposed so as to be in contact with the discharge tube holding member 4, and is configured to give the swing to the discharge tube holding member 4 in the contact state. The swing amount of the discharge tube holding member 4 is controlled so that the required irradiation angle can be obtained at the target, and the positional relationship between the flash discharge tube 10 and the reflector 11 on the optical axis K due to the swing is changed. .
【００１７】この照射角制御手段Ｋ３は、図３に示すよ
うに、入力手段３１と位置検知手段３４と制御部３２と
ドライバ３３とからなる駆動制御部Ｋ２と、駆動部Ｋ１
とで構成されている。As shown in FIG. 3, the irradiation angle control means K3 includes a drive control section K2 comprising an input means 31, a position detection means 34, a control section 32 and a driver 33, and a drive section K1.
It is composed of
【００１８】ここで、入力手段３１は、カメラなどの撮
影装置が撮影する被写体の写角に応じて撮影装置から出
力される写角信号、または、撮影装置からの写角信号の
代わりに、写角セレクトスイッチなどからマニュアル的
に写角選択されて出力された写角信号が入力され、その
入力された写角信号に対応し閃光放電管１０と反射傘１
１との光軸Ｋ上での位置関係に関する設定値を出力す
る。Here, the input means 31 outputs the angle-of-view signal output from the photographing device in accordance with the angle of view of the subject photographed by the photographing device such as a camera, or instead of the angle-of-view signal from the photographing device. An angle-of-view signal that is manually selected and output from an angle select switch or the like is input, and the flash discharge tube 10 and the reflector 1 correspond to the input angle-of-view signal.
A set value relating to the positional relationship on the optical axis K with the value 1 is output.
【００１９】位置検知手段３４は、放電管保持部材４の
位置を検出することによって閃光放電管１０と反射傘１
１との位置関係を検知し、その位置関係に対応した信号
を現在値として出力する。The position detecting means 34 detects the position of the discharge tube holding member 4 to detect the position of the flash discharge tube 10 and the reflector 1.
1 is detected, and a signal corresponding to the positional relationship is output as a current value.
【００２０】制御部３２は、入力手段３１から出力され
た設定値と位置検知手段３４から出力された現在値を表
す信号に基づいて、閃光放電管１０の移動量を算出し、
その移動量に対応する放電管保持部材４の揺動量を演算
して、の揺動量を放電管保持部材４に与えるための駆動
部Ｋ１による駆動量を演算する。The control unit 32 calculates the amount of movement of the flash discharge tube 10 based on the set value output from the input means 31 and the signal indicating the current value output from the position detection means 34,
The swing amount of the discharge tube holding member 4 corresponding to the movement amount is calculated, and the drive amount by the drive unit K1 for giving the swing amount to the discharge tube holding member 4 is calculated.
【００２１】ドライバ３３は、制御部３２により演算さ
れた放電管保持部材４に対する駆動部Ｋ１による駆動量
に基づいて、駆動部Ｋ１を制御するための制御信号を出
力する。The driver 33 outputs a control signal for controlling the driving section K1 based on the amount of driving of the discharge tube holding member 4 by the driving section K1 calculated by the control section 32.
【００２２】駆動部Ｋ１は、ドライバ３３からの制御信
号に応じて得られた放電管保持部材４に対する駆動量に
より、放電管保持部材４に必要な揺動量を与える。すな
わち、駆動部Ｋ１は、図１に示すように、モータ固定台
３に取り付けられたモータ２が駆動制御部Ｋ２からの制
御信号に従って回転すると、その回転とともにリードス
クリュー加工された駆動軸１も矢印Ａのように回転し
て、リードスクリュー部にネジ込まれた駆動モールド５
に取付けられたカム板６が、矢印Ｂのように直線移動
し、この直線移動により放電管保持部材４に必要な揺動
量を与える。その結果、カム板６に当接する放電管保持
部材４が回転軸７を支点にして光軸Ｋ方向に矢印Ｃのよ
うに揺動する。The driving section K1 gives a necessary swing amount to the discharge tube holding member 4 based on a driving amount for the discharge tube holding member 4 obtained in response to a control signal from the driver 33. That is, as shown in FIG. 1, when the motor 2 attached to the motor fixing base 3 rotates according to a control signal from the drive control unit K2, the drive shaft 1 that has been lead-screwed along with the rotation, as shown in FIG. A drive mold 5 rotated as shown in FIG.
The cam plate 6 attached to the discharge tube moves linearly as shown by the arrow B, and the linear movement gives the discharge tube holding member 4 a necessary swing amount. As a result, the discharge tube holding member 4 in contact with the cam plate 6 swings about the rotation shaft 7 in the direction of the optical axis K as shown by the arrow C.
【００２３】一方、８は付勢手段としてのコイルバネで
あり、その一端が放電管保持部材４の回転軸７とは反対
側に設けられたフック４ａに固定され、残りの一端が筐
体側のフック９に固定されており、放電管保持部材４に
対して、放電管保持部材４と照射角制御手段Ｋ３のカム
板６とが常に離れず当接状態となるように、矢印Ｄで示
す方向に付勢する。On the other hand, reference numeral 8 denotes a coil spring as biasing means, one end of which is fixed to a hook 4a provided on the opposite side of the rotating shaft 7 of the discharge tube holding member 4, and the other end is a hook on the housing side. 9 so that the discharge tube holding member 4 and the cam plate 6 of the irradiation angle control means K3 are always kept in contact with the discharge tube holding member 4 in the direction indicated by the arrow D. Energize.
【００２４】以上のように構成された照射角可変閃光装
置について、その動作を以下に説明する。使用する撮影
レンズの撮影画角に応じて、撮影対象となる被写体に対
する照射角を変える場合に、被写体において必要な照射
角が得られるように、照射角制御手段Ｋ３が、放電管保
持部材４に対して、閃光放電管１０と反射傘１１とが被
写体に対して必要な照射角を与えられる位置関係となる
ための放電管保持部材４の揺動量を、放電管保持部材４
との当接点を通じて制御する。The operation of the flash device with variable illumination angle configured as described above will be described below. When changing the irradiation angle with respect to the subject to be photographed according to the photographing angle of view of the photographing lens to be used, the irradiation angle control means K3 controls the discharge tube holding member 4 so that the required irradiation angle is obtained in the subject. On the other hand, the amount of swing of the discharge tube holding member 4 so that the flash discharge tube 10 and the reflecting umbrella 11 have a positional relationship capable of giving a required irradiation angle to the subject is determined by the
Control through this contact.
【００２５】つまり、図３に示すように、照射角制御手
段Ｋ３において、駆動制御部Ｋ２は、入力手段３１によ
りカメラや写角セレクトスイッチなどから入力された写
角信号に対応して閃光放電管１０と反射傘１１との距離
Ｌｅについての設定値を出力し、一方、位置検知手段３
４により、放電管保持部材４の位置を検出することによ
って閃光放電管１０と反射傘１１との距離Ｌｅを検知
し、その値を距離Ｌｅの現在値として出力する。That is, as shown in FIG. 3, in the irradiation angle control means K3, the drive control section K2 operates the flash discharge tube in response to the angle-of-view signal input from the camera or the angle-of-view select switch by the input means 31. A set value for the distance Le between the umbrella 10 and the reflector 11 is output.
4, the distance Le between the flash discharge tube 10 and the reflector 11 is detected by detecting the position of the discharge tube holding member 4, and that value is output as the current value of the distance Le.
【００２６】これら入力手段３１から出力された設定値
と位置検知手段３４から出力された現在値とに基づい
て、制御部３２により、必要な照射角が得られるような
閃光放電管１０の移動量を算出し、その移動量に対応す
る放電管保持部材４の揺動量を演算して、の揺動量を放
電管保持部材４に与えるための駆動部Ｋ１による駆動量
を演算する。Based on the set value output from the input means 31 and the current value output from the position detection means 34, the control unit 32 controls the amount of movement of the flash discharge tube 10 so that a required irradiation angle can be obtained. Is calculated, and the amount of swing of the discharge tube holding member 4 corresponding to the amount of movement is calculated, and the amount of drive by the drive unit K1 for giving the amount of swing to the discharge tube holding member 4 is calculated.
【００２７】制御部３２により演算された放電管保持部
材４に対する駆動部Ｋ１による駆動量に基づいて、ドラ
イバ３３により、駆動部Ｋ１を制御するための制御信号
に変換して出力する。Based on the driving amount of the discharge tube holding member 4 by the driving unit K1 calculated by the control unit 32, the driver 33 converts the driving signal into a control signal for controlling the driving unit K1 and outputs the control signal.
【００２８】この制御信号に従って、図１に示すよう
に、駆動部Ｋ１は、モータ２が回転すると、その回転と
ともにリードスクリュー加工された駆動軸１も矢印Ａの
ように回転して、駆動軸１のリードスクリュー部にネジ
込まれた駆動モールド５に取付けられたカム板６が、矢
印Ｂのように直線移動し、この直線移動によりカム板６
に当接する放電管保持部材４に、その当接点を通じて必
要な揺動量を与える。In accordance with this control signal, as shown in FIG. 1, when the motor 2 rotates, the drive shaft K1, which has been lead screwed, also rotates as shown by the arrow A when the motor 2 rotates. The cam plate 6 attached to the drive mold 5 screwed into the lead screw portion moves linearly as shown by the arrow B, and this linear movement causes the cam plate 6 to move.
To the discharge tube holding member 4 which comes into contact with the member, the necessary swing amount is given through the contact point.
【００２９】その揺動量に応じて、放電管保持部材４が
その回転軸７を中心に矢印Ｃのように揺動し、その揺動
に伴って放電管保持部材４に保持された閃光放電管１０
も光軸Ｋ上を移動して反射傘１１との光軸Ｋ上での距離
を変化させる。In accordance with the amount of the swing, the discharge tube holding member 4 swings about its rotation axis 7 as shown by the arrow C, and the flash tube held by the discharge tube holding member 4 with the swing. 10
Also moves on the optical axis K to change the distance from the reflector 11 on the optical axis K.
【００３０】例えば、カメラなどからの写角信号に対応
して、被写体における照射角を狭くする場合、照射角制
御手段Ｋ３は、放電管保持部材４を制御して、閃光放電
管１０と反射傘１１との光軸Ｋ上での距離を縮める方向
に、放電管保持部材４を揺動させる。このように、閃光
放電管１０と反射傘１１との距離、つまり位置関係を変
化させることにより、被写体に対して必要とする照射角
を与える。For example, when the irradiation angle on the subject is reduced in response to the angle-of-view signal from a camera or the like, the irradiation angle control means K3 controls the discharge tube holding member 4 so that the flash discharge tube 10 and the reflector are controlled. The discharge tube holding member 4 is swung in a direction to shorten the distance on the optical axis K from the discharge tube holding member 11. In this way, by changing the distance between the flash discharge tube 10 and the reflector 11, that is, the positional relationship, a required irradiation angle is given to the subject.
【００３１】一方、コイルバネ８は、放電管保持部材４
が揺動する際に、放電管保持部材４に対して、放電管保
持部材４と照射角制御手段のカム板６とが常に離れるこ
となく当接状態となるように矢印Ｄ方向に付勢し、放電
管保持部材４と照射角制御手段Ｋ３との当接点でのガタ
を無くす。On the other hand, the coil spring 8 is
Is urged against the discharge tube holding member 4 in the direction of arrow D so that the discharge tube holding member 4 and the cam plate 6 of the irradiation angle control means are always in contact with each other without separating. The play at the contact point between the discharge tube holding member 4 and the irradiation angle control means K3 is eliminated.
【００３２】以上のようにして、撮影モードが広角撮影
を行うためワイド状態に切り換えられている場合、つま
り、ワイド時には、その撮影モードに対応して、放電管
保持部材４が２点鎖線（仮想線）で示す位置にくるよう
に、照射角制御手段Ｋ３により、放電管保持部材４の揺
動量を制御する。As described above, when the photographing mode is switched to the wide state for performing wide-angle photographing, that is, at the time of widening, the discharge tube holding member 4 corresponds to the two-dot chain line (virtual line) corresponding to the photographing mode. The swinging amount of the discharge tube holding member 4 is controlled by the irradiation angle control means K3 so that the discharge tube holding member 4 comes to the position shown by the line.
【００３３】ここで、望遠撮影を行うため撮影モードが
テレ状態に切り換えられた場合、つまり、テレ時には、
その撮影モードに対応して、放電管保持部材４が実線で
示す位置にくるように、照射角制御手段Ｋ３により、放
電管保持部材４の揺動量を制御する。そして、最終的に
テレ時には、放電管保持部材４および閃光放電管１０は
実線で示す位置に達する。Here, when the photographing mode is switched to the telephoto state for performing the telephoto photographing, that is, at the time of the telephoto,
In accordance with the photographing mode, the oscillating amount of the discharge tube holding member 4 is controlled by the irradiation angle control means K3 so that the discharge tube holding member 4 comes to the position shown by the solid line. Finally, at the time of telephoto, the discharge tube holding member 4 and the flash discharge tube 10 reach the positions shown by solid lines.
【００３４】このようにして、閃光放電管１０を移動す
ることにより、照射角可変による配光を撮影モードに応
じて適宜変化させることができる。以上の動作により、
閃光放電管１０と反射傘１１との光軸Ｋ上での距離を変
更することができる。As described above, by moving the flash discharge tube 10, the light distribution by changing the irradiation angle can be appropriately changed according to the photographing mode. By the above operation,
The distance between the flash discharge tube 10 and the reflector 11 on the optical axis K can be changed.
【００３５】そのため、閃光放電管１０の移動動作を高
精度に制御して、反射傘１１に対する閃光放電管１０の
位置決めを正確に行うことができ、使用する撮影レンズ
の撮影画角に応じて、被写体に対する適切な照射角を得
ることができる。Therefore, the moving operation of the flash discharge tube 10 can be controlled with high precision, and the positioning of the flash discharge tube 10 with respect to the reflector 11 can be accurately performed. An appropriate irradiation angle for the subject can be obtained.
【００３６】なお、図１に示す上記実施の形態で説明し
た照射角可変閃光装置を、その照射対象となる被写体を
撮影する撮影装置に取り付けて使用した場合、放電管保
持部材４が、閃光放電管１０を被写体方向に移動させる
際に、その移動に従って矢印Ｇ１で示すように、閃光放
電管１０が撮影装置Ｔにおいて撮影レンズＬ１を通じて
形成される撮影光軸Ｔ１に近づくように、揺動するよう
構成したが、図４に示すように、放電管保持部材４の揺
動支点となる回転軸７と閃光放電管１０との位置関係
と、放電管保持部材４とカム板６の当接状態とを、図１
の場合から変更することにより、放電管保持部材４が、
閃光放電管１０を被写体方向に移動させる際に、その移
動に従って矢印Ｇ２で示すように、閃光放電管１０が撮
影装置Ｔの撮影光軸Ｔ１から離れていくように、揺動す
るよう構成することもできる。When the variable irradiation angle flash device described in the above embodiment shown in FIG. 1 is used by attaching it to a photographing device for photographing a subject to be irradiated, the discharge tube holding member 4 becomes a flash discharge device. When the tube 10 is moved in the direction of the subject, the flash discharge tube 10 swings in accordance with the movement as shown by an arrow G1 so as to approach the photographing optical axis T1 formed through the photographing lens L1 in the photographing apparatus T. As shown in FIG. 4, as shown in FIG. 4, the positional relationship between the rotating shaft 7, which is a swing fulcrum of the discharge tube holding member 4, and the flash discharge tube 10, and the contact state between the discharge tube holding member 4 and the cam plate 6. Figure 1
By changing from the above case, the discharge tube holding member 4
When moving the flash discharge tube 10 in the direction of the subject, the flash discharge tube 10 swings so as to move away from the imaging optical axis T1 of the imaging device T as indicated by an arrow G2 according to the movement. You can also.
【００３７】この構成により、閃光放電管１０の移動動
作を高精度に制御して、反射傘１１に対する閃光放電管
１０の位置決めを正確に行うことができるとともに、近
距離の被写体をワイド撮影するのため閃光放電管１０を
被写体方向に移動させた場合に、閃光放電管１０から反
射傘１１で反射した反射光による照射方向を、図１の場
合に比べて下向きにすることができ、近距離の被写体に
対してより正確に照射方向を向けることができる。その
ため、使用する撮影レンズＬ１の撮影画角に応じて、被
写体に対する適切な照射角を得ることができる。With this configuration, the moving operation of the flash discharge tube 10 can be controlled with high accuracy to accurately position the flash discharge tube 10 with respect to the reflector 11, and to perform wide-angle shooting of a subject at a short distance. Therefore, when the flash discharge tube 10 is moved in the direction of the subject, the irradiation direction of the light reflected by the reflector 11 from the flash discharge tube 10 can be directed downward as compared with the case of FIG. The irradiation direction can be more accurately directed to the subject. Therefore, an appropriate irradiation angle with respect to the subject can be obtained according to the shooting angle of view of the shooting lens L1 to be used.
【００３８】なお、上記に説明した各実施の形態では、
閃光放電管１０を光軸Ｋ方向に移動することによって、
閃光放電管１０と反射傘１１との光軸Ｋ上での距離を変
更するよう構成したが、閃光放電管１０と反射傘１１と
の少なくとも一方を移動するように構成しても、閃光放
電管１０と反射傘１１との光軸Ｋ上での距離を変更する
ことができ、同様に実施できる。In each of the embodiments described above,
By moving the flash discharge tube 10 in the direction of the optical axis K,
Although the distance between the flash discharge tube 10 and the reflector 11 on the optical axis K is changed, at least one of the flash discharge tube 10 and the reflector 11 is moved. The distance on the optical axis K between 10 and the reflecting umbrella 11 can be changed, and it can be implemented similarly.
【００３９】また、上記に説明した各実施の形態では、
照射角制御手段Ｋ３にモータ２とこの回転を電子制御す
る駆動制御部Ｋ２とを設けて電動駆動としたが、モータ
２と駆動制御部Ｋ２の代わりに、駆動軸１を回転するこ
とができる例えばハンドルを設けて、このハンドルを手
動で回すことにより、カム板６が直線移動し、放電管保
持部材４を揺動させて、閃光放電管１０と反射傘１１と
の光軸Ｋ上での距離を変更するように、手動駆動として
構成してもよいし、また、電動および手動による両方の
駆動方式を併用することもできる。In each of the embodiments described above,
Although the irradiation angle control means K3 is provided with the motor 2 and the drive control unit K2 for electronically controlling the rotation, the drive is electrically driven. However, instead of the motor 2 and the drive control unit K2, the drive shaft 1 can be rotated. By providing a handle and manually turning the handle, the cam plate 6 moves linearly, causing the discharge tube holding member 4 to swing, and the distance between the flash discharge tube 10 and the reflector 11 on the optical axis K. May be configured as a manual drive, or both electric and manual drive methods may be used in combination.
【００４０】[0040]
【発明の効果】以上のように本発明によれば、照射角制
御手段が、それと当接する光源保持手段に対して、その
当接点を通じて光源保持手段の揺動量を制御し、その揺
動量に応じて、光源保持手段がその支点を中心に揺動
し、その揺動に伴って光源保持手段に保持された光源も
光軸上を移動して、光源と反射傘との位置関係を変化さ
せ、照射対象が必要とする照射角を得ることができ、光
源保持手段が揺動する際には、付勢手段は、光源保持手
段と照射角制御手段とが常に当接状態となる方向に、光
源保持手段に対して付勢し、光源保持手段と照射角制御
手段との当接点のガタを無くすことができる。As described above, according to the present invention, the irradiation angle control means controls the swing amount of the light source holding means through its contact point with respect to the light source holding means which comes into contact with the irradiation angle control means. Therefore, the light source holding means swings about its fulcrum, and the light source held by the light source holding means also moves on the optical axis with the swing, changing the positional relationship between the light source and the reflector, When the irradiation angle required by the irradiation target can be obtained, and the light source holding means swings, the urging means moves the light source in a direction in which the light source holding means and the irradiation angle control means are always in a contact state. By biasing the holding means, it is possible to eliminate play at the contact point between the light source holding means and the irradiation angle control means.
【００４１】そのため、閃光光源の移動動作を高精度に
制御して、反射傘に対する閃光光源の位置決めを正確に
行うことができ、使用する撮影レンズの撮影画角に応じ
て、照射対象に対する適切な照射角を得ることができ
る。Therefore, the movement of the flash light source can be controlled with high precision, and the flash light source can be accurately positioned with respect to the reflector. An irradiation angle can be obtained.
【００４２】また、ワイド撮影する場合は光源を被写体
方向に移動させるが、その場合の光源から反射傘で反射
した反射光による照射方向を、上記構成に比べてより下
向きにすることができる。In the case of wide-angle shooting, the light source is moved in the direction of the subject. In this case, the direction of irradiation by the light reflected by the reflector from the light source can be made more downward than in the above configuration.
【００４３】そのため、上記効果に加えて、ワイド撮影
時には一般的に比較的近距離となる被写体に対してより
正確に照射方向を向けることができ、使用する撮影レン
ズの撮影画角に応じて、被写体に対する適切な照射角を
得ることができる。Therefore, in addition to the above-described effects, the irradiation direction can be more accurately directed to an object which is generally relatively short in wide-angle shooting. An appropriate irradiation angle for the subject can be obtained.
【図１】本発明の実施の形態の照射角可変閃光装置の側
面から見た構成図FIG. 1 is a configuration diagram of a variable irradiation angle flash device according to an embodiment of the present invention as viewed from a side.
【図２】同実施の形態の照射角可変閃光装置の背面から
見た構成図FIG. 2 is a configuration diagram of the variable illumination angle flash device of the embodiment viewed from the back.
【図３】同実施の形態における照射角変更制御の説明の
ためのブロック図FIG. 3 is a block diagram for explaining irradiation angle change control in the embodiment.
【図４】本発明の別の実施の形態の照射角可変閃光装置
の構成図FIG. 4 is a configuration diagram of a flash device with variable irradiation angle according to another embodiment of the present invention.
【図５】従来の照射角可変閃光装置における要部構成図FIG. 5 is a configuration diagram of a main part of a conventional flash device with variable irradiation angle.
【図６】別の従来例の照射角可変閃光装置における要部
構成図FIG. 6 is a main part configuration diagram of another conventional variable illumination angle flash device.
４ 放電管保持部材 ８ コイルバネ Ｋ１ 駆動部 Ｋ２ 駆動制御部 Ｋ３ 照射角制御手段 Reference Signs List 4 discharge tube holding member 8 coil spring K1 drive unit K2 drive control unit K3 irradiation angle control means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三井 肇 大阪府大阪市北区長柄東２丁目９番95号 ウエスト電気株式会社内 (56)参考文献 特開 平２−273729（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03B 15/03 - 15/05 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hajime Mitsui 2-9-95 Nagara Higashi, Kita-ku, Osaka-shi, Osaka West Electric Co., Ltd. (56) References JP-A-2-273729 (JP, A) ( 58) Field surveyed (Int.Cl. 7 , DB name) G03B 15/03-15/05
Claims (5)
反射傘とを備え、光源からの直接光および反射光による
照射対象への照射の際に、光源と反射傘とで形成する光
軸上におけるそれらの位置関係を変化させて、前記照射
対象に対する照射角を変更可能とした照射角可変閃光装
置において、任意の１点を支点にして前記光軸方向に揺
動自在に構成され、前記揺動により光源と反射傘との前
記位置関係が変化するように光源を保持する光源保持手
段と、光源保持手段に当接するように配設され、その当
接状態で光源保持手段に対して前記揺動を与えるように
構成され、前記照射対象で必要な照射角が得られるよう
に、光源保持手段の揺動量を制御して、前記揺動による
光源と反射傘との前記位置関係を変化させる照射角制御
手段と、光源保持手段と照射角制御手段とが常に前記当
接状態となる方向に、光源保持手段に対して付勢する付
勢手段とを備えた照射角可変閃光装置。1. A light source that emits flash light and a reflector that reflects the flash light, and when irradiating an irradiation target with direct light and reflected light from the light source, an optical axis formed by the light source and the reflector is used. In the irradiation angle variable flash device in which the irradiation angle with respect to the irradiation target can be changed by changing their positional relationship in the optical axis direction, the device is configured to be swingable in the optical axis direction with an arbitrary point as a fulcrum. A light source holding means for holding the light source such that the positional relationship between the light source and the reflector is changed by movement; and a light source holding means for contacting the light source holding means. Irradiation for controlling a swing amount of a light source holding unit so as to obtain a required irradiation angle at the irradiation target, thereby changing the positional relationship between the light source and the reflector due to the swing. Angle control means and light source holding hand An irradiation angle variable flash device comprising: an urging means for urging the light source holding means in a direction in which the step and the irradiation angle control means are always in the contact state.
に前記撮影装置と共に使用され、閃光を発する光源とそ
の閃光を反射する反射傘とを備え、被写体である照射対
象に光源からの直接光および反射光を照射する際に、光
源と反射傘とで形成する光軸上におけるそれらの位置関
係を変化させて、前記照射対象に対する照射角を変更可
能とした照射角可変閃光装置において、任意の１点を支
点にして前記光軸方向に揺動自在に構成され、前記揺動
により光源と反射傘との前記位置関係が変化するように
光源を保持する光源保持手段と、光源保持手段に当接す
るように配設され、その当接状態で光源保持手段に対し
て前記揺動を与えるように構成され、前記照射対象で必
要な照射角が得られるように、光源保持手段の揺動量を
制御して、前記揺動による光源と反射傘との前記位置関
係を変化させる照射角制御手段と、光源保持手段と照射
角制御手段とが常に前記当接状態となる方向に、光源保
持手段に対して付勢する付勢手段とを備え、前記光源保
持手段を、光源と反射傘との前記位置関係を変化させる
際に、前記揺動により光源が照射対象方向へ移動するに
従って光源が前記撮影装置の撮影光軸から離れていくよ
うに、揺動するよう構成した照射角可変閃光装置。2. A light source that emits flash light and a reflector that reflects the flash light are used together with the image capturing device when an image of an object is captured by the image capturing device. When irradiating light, the position of the light source and the reflecting umbrella on the optical axis formed by changing the positional relationship between them, the irradiation angle variable flash device that can change the irradiation angle with respect to the irradiation target, any one point And a light source holding means for holding the light source so that the positional relationship between the light source and the reflector is changed by the swing, and a light source holding means. Are arranged so as to give the swing to the light source holding means in the contact state, and by controlling the swing amount of the light source holding means so as to obtain a required irradiation angle at the irradiation target. The rocking The irradiation angle control means for changing the positional relationship between the light source and the reflecting umbrella, and the urging force for urging the light source holding means in a direction in which the light source holding means and the irradiation angle control means are always in the contact state. Means, the light source holding means, when changing the positional relationship between the light source and the reflector, the light source moves away from the imaging optical axis of the imaging device as the light source moves in the direction to be irradiated by the swing. A flash device with a variable illumination angle that is configured to oscillate as if to move.
射角を得るため光源と反射傘との位置関係を変化させる
際に、光源と反射傘間における、照射対象で必要な照射
角を得るための位置関係と現在の位置関係とに基づい
て、光軸上での光源と反射傘間の距離の変化量を演算
し、その変化量に応じて光源保持手段の揺動量を制御し
て、光源と反射傘との前記距離を変化させることによ
り、光源と反射傘との位置関係を、照射対象で必要な照
射角が得られる位置関係に変化させるよう構成した請求
項１または請求項２に記載の照射角可変閃光装置。3. The irradiation angle control means, when changing the positional relationship between the light source and the reflector in order to obtain a required irradiation angle in the irradiation target, adjusts the irradiation angle required in the irradiation target between the light source and the reflector. Based on the positional relationship to obtain and the current positional relationship, the amount of change in the distance between the light source and the reflector on the optical axis is calculated, and the swing amount of the light source holding means is controlled according to the amount of change. 3. The method according to claim 1, wherein the distance between the light source and the reflector is changed to change the positional relationship between the light source and the reflector to a position at which a required irradiation angle can be obtained at the irradiation target. A flash device with variable illumination angle according to item 1.
射角を狭くする場合、光源と反射傘との光軸上での距離
を縮めるように、光源保持手段の揺動量を制御するよう
構成した請求項３に記載の照射角可変閃光装置。4. The irradiation angle control means is configured to control the swing amount of the light source holding means so as to reduce the distance on the optical axis between the light source and the reflector when the irradiation angle on the irradiation target is narrowed. The flash device according to claim 3.
一方を移動して前記光源と反射傘との光軸上での距離を
変化させるよう構成した請求項３または請求項４に記載
の照射角可変閃光装置。5. The illumination according to claim 3, wherein at least one of the light source and the reflector is moved to change the distance between the light source and the reflector on the optical axis. Angle variable flash device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8001092A JP3022295B2 (en) | 1996-01-09 | 1996-01-09 | Variable illumination angle flash device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8001092A JP3022295B2 (en) | 1996-01-09 | 1996-01-09 | Variable illumination angle flash device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09189942A JPH09189942A (en) | 1997-07-22 |
| JP3022295B2 true JP3022295B2 (en) | 2000-03-15 |
Family
ID=11491867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8001092A Expired - Fee Related JP3022295B2 (en) | 1996-01-09 | 1996-01-09 | Variable illumination angle flash device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3022295B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005078011A (en) * | 2003-09-03 | 2005-03-24 | Matsushita Electric Ind Co Ltd | Illumination angle variable stroboscope device |
| JP5273010B2 (en) | 2009-10-21 | 2013-08-28 | 株式会社ニコン | Lighting device |
| CN106569373B (en) * | 2016-11-14 | 2024-05-28 | 广州市朝通科技有限公司 | Mobile terminal, flash lamp assembly thereof and flash lamp control method |
-
1996
- 1996-01-09 JP JP8001092A patent/JP3022295B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09189942A (en) | 1997-07-22 |
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