JPH02291538A - Variable irradiation angle electronic flash light device - Google Patents

Variable irradiation angle electronic flash light device

Info

Publication number
JPH02291538A
JPH02291538A JP11223989A JP11223989A JPH02291538A JP H02291538 A JPH02291538 A JP H02291538A JP 11223989 A JP11223989 A JP 11223989A JP 11223989 A JP11223989 A JP 11223989A JP H02291538 A JPH02291538 A JP H02291538A
Authority
JP
Japan
Prior art keywords
light source
fresnel lens
angle
irradiation angle
irradiation
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.)
Pending
Application number
JP11223989A
Other languages
Japanese (ja)
Inventor
Makoto Mitsusaka
誠 三坂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP11223989A priority Critical patent/JPH02291538A/en
Publication of JPH02291538A publication Critical patent/JPH02291538A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE:To improve irradiation efficiency and to reduce the size of the device by providing an irradiation angle setting means which moves a Fresnel lens forward while moving a light source and a reflecting umbrella in such a direction that the distance in the optical axis direction is shortened. CONSTITUTION:A light source 12 consisting of a straight type flash light tube is provided. The solid-line position of the Fresnel indicates a position of wide- angle photography and the two-dot chain line position 11a indicates a position of telephotography; and the solid-line position of the light source indicates a position of wide-angle photography and the two-dot chain line position 12a indicates a position of telephotography respectively. Thus, the light source 12 and Fresnel lens 11, or reflecting umbrella 13 and Fresnel lens 11 are moved at the same time to vary the irradiation angle. Consequently, the irradiation efficiency is improved and the size reduction or the view angle of a high-power zoom lens is realized.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、ズームレンズを備えたカメラ、特にスチール
ビデオカメラ等に配置される照射角可変電子閃光装置に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a variable illumination angle electronic flash device disposed in a camera equipped with a zoom lens, particularly a still video camera.

〈従来の技術〉 従来の照射角可変電子閃光装置については、実開昭5 
3−62330号公報等に開示されたものとして、第7
図に示すように閃光管2を有する反射笠3の前部に配設
したフレネルレンズ1ヲ破M1aの位置まで移動させて
その照射角度を変化させるものが一般的である。また、
特公昭62−51453号公報に開示されたものとして
、第8図(a)の状態から第8図(b)の状態へと、閃
光管2を2aの位置へ移動することにより、閃光管2と
反射笠3の位置関係を変化させて照射角度を変化させて
いるものも知られている。
<Prior art> Regarding the conventional electronic flash device with variable illumination angle,
No. 7 as disclosed in Publication No. 3-62330 etc.
As shown in the figure, a Fresnel lens 1 disposed at the front of a reflector 3 having a flash tube 2 is generally moved to a position M1a to change its irradiation angle. Also,
As disclosed in Japanese Patent Publication No. 62-51453, by moving the flash tube 2 to the position 2a from the state shown in FIG. 8(a) to the state shown in FIG. 8(b), the flash tube 2 It is also known that the irradiation angle is changed by changing the positional relationship between the reflector 3 and the reflector 3.

く発明が解決しようとする課題〉 しかしながら、これら前述従来例の電子閃光装置におい
て、前者の方式の場合、前面に位置するフレネルレンズ
1の移動のみで照射角度を変化させていたため、以下の
ような問題点があった。
Problems to be Solved by the Invention> However, in the case of the former type of electronic flash devices of the above-mentioned conventional examples, the irradiation angle was changed only by moving the Fresnel lens 1 located at the front, so the following problem occurred. There was a problem.

(1)  フレネルレンズの移動スペースによる大型化
(2)  フレネルレンズ自体の大型化また、後者の方
式の場合、光源としての閃光管2並びに該閃光管2と反
射笠3の位置関係を変化させて照射角を変化させていた
ため、以下のような問題点があった。
(1) Increase in size due to the movement space of the Fresnel lens (2) Increase in the size of the Fresnel lens itself Also, in the case of the latter method, the positional relationship between the flash tube 2 as a light source and the flash tube 2 and the reflector 3 is changed. Since the irradiation angle was changed, there were the following problems.

(1)反射笠の大きさで閃光管の移動量が決定してしま
うため反射条件の変化による照射角の変化が少ない。逆
に閃光管の移動量を太き《すると、閃光装置全体が大型
化してしまう。
(1) Since the amount of movement of the flash tube is determined by the size of the reflective shade, there is little change in the irradiation angle due to changes in reflection conditions. On the other hand, if the amount of movement of the flash tube is increased, the entire flash device becomes larger.

(2)閃光管がキセノン管等の直管タイプの場合、一般
に第9図に示すように、θ1〉θl,02′〉θ2,θ
3〉θ3(ただし、θ1,θ2,θ3はそれぞれキセノ
ン管2の左端,中央,右端から射出する光のうち、右側
面反射板で反射される光の範囲であり、θ(,θz,0
3′はそれぞれ直接開口から出てゆ《光の範囲を示す)
であるため、反射笠3の側面反射板3aで反射される光
は、反射笠3の開口から直接出ていく光に比べてがなり
少な《、閃光管2の移動量により反射の条件を変化させ
ても、照射角の変化(長手方向)は少ない。
(2) If the flash tube is a straight tube type such as a xenon tube, generally θ1〉θl, 02'〉θ2, θ
3〉θ3 (where θ1, θ2, and θ3 are the range of light reflected by the right side reflector among the light emitted from the left end, center, and right end of the xenon tube 2, respectively, and θ(, θz, 0
3' indicates the range of light emitted directly from the aperture.
Therefore, the light reflected by the side reflector 3a of the reflective shade 3 is smaller than the light that directly exits from the opening of the reflective shade 3.The conditions for reflection are changed depending on the amount of movement of the flash tube 2. Even if the beam angle is changed, the change in the irradiation angle (longitudinal direction) is small.

本発明は、前述従来例の問題点を解決し、照射効率を向
上させるとともに、装置の小型化を達成することのでき
る照射角可変電子閃光装置を提供することを目的とする
SUMMARY OF THE INVENTION It is an object of the present invention to provide a variable irradiation angle electronic flash device that can solve the problems of the prior art, improve irradiation efficiency, and reduce the size of the device.

〈課題を解決するための手段〉 前記の目的を達成するために、本発明は光源と反射笠と
該反射笠の前面に配置されるフレネルレンズとを備えた
照射角可変電子閃光装置において、照射角を狭《する場
合、該光源と該反射笠との光軸方向の距離を縮める方向
にいずれが一方を移動させるとともに、該フレネルレン
ズを前方へ移動させる照射角設定手段を設けたものであ
る。
<Means for Solving the Problems> In order to achieve the above object, the present invention provides a variable irradiation angle electronic flash device including a light source, a reflective shade, and a Fresnel lens disposed in front of the reflective shade. When narrowing the angle, an irradiation angle setting means is provided for moving one of the light sources and the reflecting shade in a direction to shorten the distance in the optical axis direction, and moving the Fresnel lens forward. .

〈作用〉 以上の構成の照射角可変電子閃光装置は、光源とフレネ
ルレノズ又は反射笠とフレネルレンズを同時に移動させ
ることによって照射角可変を行う構成としているため、
照射効率が良《なり、さらに小型化或は高倍率ズームレ
ンズの画角に対応させることができる。また、反射笠の
形状、光源の移動量、フレネルレンズの焦点距離、フレ
ネルレンズの移動量という具合に、照射角を決定する要
素が増えるため、より細かな設計が可能になる。
<Function> The variable illumination angle electronic flash device having the above configuration is configured to change the illumination angle by simultaneously moving the light source and the Fresnel lens or the reflective shade and the Fresnel lens.
The irradiation efficiency is improved, and the lens can be made smaller or compatible with the angle of view of a high-magnification zoom lens. Furthermore, since there are more factors that determine the irradiation angle, such as the shape of the reflective shade, the amount of movement of the light source, the focal length of the Fresnel lens, and the amount of movement of the Fresnel lens, more detailed design becomes possible.

〈実施例〉 以下、本発明の一実施例を第1図ないし第5図に基いて
説明する。
<Example> An example of the present invention will be described below with reference to FIGS. 1 to 5.

第1図は電子閃光装置の主要部分を示す斜視図で、同図
において、11はフレネルレンズ\ 12は直管タイプ
の閃光管からなる光源であり、フレネルレンズ11の実
線位置はワイド時の位置を、2点鎖線位置11aはテレ
時の位置を、光源12の実線位置はワイド時の位置を、
2点鎖線位置12aはテレ時の位置をそれぞれ示してい
る。また、13は反射笠である。
FIG. 1 is a perspective view showing the main parts of an electronic flash device. In the same figure, 11 is a Fresnel lens \ 12 is a light source consisting of a straight flash tube, and the solid line position of the Fresnel lens 11 is the position at wide angle. The two-dot chain line position 11a is the position when telephoto, and the solid line position of the light source 12 is the position when wide.
The two-dot chain line positions 12a indicate the positions during telephoto mode. Further, 13 is a reflective shade.

ここで、本実施例においては、焦点距離35jIJ〜7
0.Jのズームレンズの画角に対応し得る照射角(照射
範囲)を持った照射角可変電子閃光装置を示している。
Here, in this example, the focal length is 35jIJ~7
0. This figure shows a variable irradiation angle electronic flash device that has an irradiation angle (irradiation range) that can correspond to the angle of view of the J zoom lens.

第2図(a) , (b)は照射角可変を行うための設
定機構を示す側面図である。
FIGS. 2(a) and 2(b) are side views showing a setting mechanism for varying the irradiation angle.

同図において、14はカム板で、図示左下がりに傾斜し
たカム溝14aと前縁部に光源12と直交する方向の直
線溝14bとを有し、該カム溝14aには光源12の一
端が係合し、該直線溝14bにはフレネルレンズ11の
一側縁に設けた突起部が係合しており、該カム溝14a
の傾斜方向に変位可能になっている。15はガイド板で
、光軸方向の直線溝15aを有し、光源12の一端が係
合している。
In the figure, a cam plate 14 has a cam groove 14a inclined downward to the left in the figure and a straight groove 14b in a direction perpendicular to the light source 12 at its front edge. A protrusion provided on one side edge of the Fresnel lens 11 is engaged with the linear groove 14b, and the cam groove 14a
It can be displaced in the direction of inclination. A guide plate 15 has a straight groove 15a in the optical axis direction, and one end of the light source 12 is engaged with the guide plate.

そして、第2図(a)に示すテレ時の状態からカム板1
4を図中斜め下方向に変位すると、光源12はカム板1
4のカム溝14aによって前方に力を受に連動して後ろ
に下がる。この結果、カム板14が第2図(b)に示す
下方位置に達すると、光源12及びフレネルレ/ズ11
はワイド時の位置までそれぞれ移動する。
Then, from the telephoto state shown in FIG. 2(a), the cam plate 1 is
When the light source 12 is moved diagonally downward in the figure, the light source 12
The force is received forward by the cam groove 14a of No. 4, and moves backward in conjunction with the receiving force. As a result, when the cam plate 14 reaches the lower position shown in FIG. 2(b), the light source 12 and the Fresnel lens 11
move to the wide position.

そして、第3図において、フレネルレンズ11は物体側
面が焦点距離fの円形フレネルレンズであり、光源側面
は左右方向にのみ屈折力を持つ焦点距離fzのシリンド
リ力ルフレネルレンズである。
In FIG. 3, the Fresnel lens 11 is a circular Fresnel lens with a focal length f on the object side, and a cylindrical Le Fresnel lens with a focal length fz having refractive power only in the left and right directions on the light source side.

また、反射笠13の光源12と直交する断面の楕円形状
を ■+−I1− ( 1+K)(Y/R)2で表わすとき
、Rは楕円の基準球面の半径、Kは円錐定数で、楕円の
離心率をeとするとき、K−e2である。
Also, when the elliptical shape of the cross section of the reflective shade 13 orthogonal to the light source 12 is expressed as +-I1- (1+K)(Y/R)2, R is the radius of the reference sphere of the ellipse, K is the conic constant, and the ellipse is When the eccentricity of is denoted by e, it is K-e2.

さらに、反射笠13の深さをD1光源12の長さと半径
と移動量をそれぞれl,r,Hm,  フレネルレンズ
11の移動量をFmとし、 1’=1058   fz=26.5  k=−0.9
5R=3.72     4=16.o  2r=3.
5Hm=0.825  Fm=4.0   D=4.0
とする(単位ジ)。この時、照射角は次のように変化す
る。
Furthermore, the depth of the reflective shade 13 is D1, the length, radius, and movement of the light source 12 are l, r, and Hm, respectively, and the movement of the Fresnel lens 11 is Fm, 1'=1058 fz=26.5 k=-0 .9
5R=3.72 4=16. o2r=3.
5Hm=0.825 Fm=4.0 D=4.0
(unit di). At this time, the irradiation angle changes as follows.

上下 30° → 40° 左右 45° → 62° これは前記ズームレンズの画角に充分対応している。な
お、ここでのフレネルレンズ11の移動量Fmは、この
仕様における従来のものに比べ約半分である。
Vertical: 30° → 40° Horizontal: 45° → 62° This fully corresponds to the angle of view of the zoom lens. Note that the amount of movement Fm of the Fresnel lens 11 here is approximately half that of the conventional lens with this specification.

以上の数値設定に至るまでの経験則に基づくと、前記ズ
ームレンズに対応し得るためには、各値は次の範囲内で
あることが望ましい。
Based on the empirical rules leading up to the above numerical settings, each value is preferably within the following range in order to be compatible with the zoom lens.

fZ(.,f               ・・・■
20≦fz<30          ・・・■−l 
≦ K ≦−05        ・・・■0.1D≦
Hm≦D −2r      −■t < 3. 6 
D             ・・・■D(R(2R 
      ・・・■ ■について、fがこの下限を越えると、フイルムサイズ
に対応した上限左右の照射角のバランスが保てな《なる
fZ(.,f...■
20≦fz<30...■-l
≦K≦-05...■0.1D≦
Hm≦D −2r −■t < 3. 6
D...■D(R(2R
...■ Regarding ■, if f exceeds this lower limit, the balance between the irradiation angles on the left and right sides of the upper limit corresponding to the film size cannot be maintained.

■について、fzがこの下限を越えると、屈折力が強す
ぎるため、第4図に示すように光が拡散してしまう。r
zが上限を越えると、屈折力か弱すぎるため、フレネル
レンズの移動量が大きくなり、閃光装置全体が大型化し
てしまう。
Regarding (2), if fz exceeds this lower limit, the refractive power will be too strong and the light will be diffused as shown in FIG. r
If z exceeds the upper limit, the refractive power will be too weak and the amount of movement of the Fresnel lens will increase, resulting in an increase in the size of the entire flash device.

■について、Kが下限を越えると、光源移動による照射
角変化が不足する。Kが■の上限を越えを場合、光が拡
散しすぎるため、前記ズームレンズの画角に対応できな
くなる。
Regarding (2), if K exceeds the lower limit, the illumination angle change due to the movement of the light source will be insufficient. When K exceeds the upper limit of (2), the light is too diffused and cannot correspond to the angle of view of the zoom lens.

■について、Hmが下限を越える場合、光源移動による
照射角変化が不足する。Hmが■の上限を越える場合、
光源移動量が大きすぎて、反射笠の開口から光源がはみ
出す。
Regarding (2), when Hm exceeds the lower limit, the illumination angle change due to the movement of the light source is insufficient. If Hm exceeds the upper limit of ■,
The amount of movement of the light source is too large and the light source protrudes from the opening of the reflective shade.

■について、tが上限を越えると、光が拡散しすぎるた
め、前記ズームレンズの画角に対応できなくなる。
Regarding (2), when t exceeds the upper limit, the light is too diffused and cannot correspond to the angle of view of the zoom lens.

■について、Rが下限を越えると、光が第5図(a)に
示すように内側に向かい過ぎ、光が拡散する。
Regarding (2), when R exceeds the lower limit, the light goes too far inward as shown in FIG. 5(a), and the light is diffused.

また、Rが上限を越えると、第5図(b)に示すように
光が外側へ向かい過ぎ、光が拡散する。
Furthermore, when R exceeds the upper limit, the light is directed too far to the outside and diffused as shown in FIG. 5(b).

以上のように、本実施例の照射角可変の電子閃光装置は
照射効率が良くなる。
As described above, the electronic flash device with variable irradiation angle of this embodiment improves irradiation efficiency.

第6図は本発明の他の実施例を示すものである。FIG. 6 shows another embodiment of the invention.

説明を簡単にするために前述実施例と同一部分に同一符
号を付し、相違する点のみを説明する。
In order to simplify the explanation, the same parts as in the previous embodiment are given the same reference numerals, and only the different points will be explained.

本実施例では光源として、豆球状のキセノンランプのよ
うな光源22を用いたものである。その他の構成は前述
実施例と同様である。
In this embodiment, a light source 22 such as a ball-shaped xenon lamp is used as a light source. The other configurations are the same as those of the previous embodiment.

本実施例も前述実施例と同様に、焦点距離35jEJl
〜70mのズームレンズに対応し得る照射角をもった照
射角可変電子閃光装置である。
This example also has a focal length of 35jEJl, similar to the previous example.
This is a variable illumination angle electronic flash device that has an illumination angle that can accommodate a zoom lens up to 70 m.

反射笠13の形状は、光軸を中心とした回転対称形であ
り、 f==52.4   f z=26.5   K=−0
.95R=3.72    2 r=3.O    H
m=0.9Fm=2.5     D=40 となる(単位.)。この時、照射角は次のように変化す
る。
The shape of the reflective shade 13 is rotationally symmetrical about the optical axis, and f==52.4 f z=26.5 K=-0
.. 95R=3.72 2 r=3. O H
m=0.9Fm=2.5 D=40 (unit.). At this time, the irradiation angle changes as follows.

上下 30° → 52° 左右 38° → 70° これハ焦点距離3 5 rts〜7011jのズームレ
ンズの画角に充分対応している。
Vertical: 30° → 52° Horizontal: 38° → 70° This fully corresponds to the angle of view of a zoom lens with a focal length of 35 rts to 7011j.

なお、前記の各実施例では、フレネルレンズ11と光源
12又は22を移動させることによって照射角可変を行
う構成としているが、これに限定されるものではなく、
照射角を狭める際、光源を固定して反射笠を前方に移動
させ、それと同時にフレネルレンズを、該反射笠との距
離が広がるように前方に移動させても同様の機能が得ら
れる。
In each of the above embodiments, the illumination angle is changed by moving the Fresnel lens 11 and the light source 12 or 22, but the invention is not limited to this.
When narrowing the irradiation angle, the same function can be obtained by fixing the light source and moving the reflective shade forward, and at the same time moving the Fresnel lens forward so that the distance from the reflective shade increases.

また、照射角を狭める際に、フレネルレンズを固定して
反射笠を後方に移動させ、それと同時に反射笠と光源の
距離を縮めるように、光源も後方に移動させても同様の
機能が得られる。
Additionally, when narrowing the illumination angle, the same function can be obtained by fixing the Fresnel lens and moving the reflective shade to the rear, and at the same time moving the light source backward to shorten the distance between the reflective shade and the light source. .

く発明の効果〉 本発明は、以上説明したように光源と反射笠との光軸方
向の距離を縮める方向のいずれか一方を移動させるとと
もに、フレネルレンズを前方へ移動させる照射角設定手
段を設けることにより、照射角可変はフレネルレンズと
光源又は反射笠の両方を移動させて行うようにしたから
、照射効率を向上できかつ装置の小型化することができ
る効果がある。
Effects of the Invention> As explained above, the present invention provides an irradiation angle setting means for moving the Fresnel lens forward in addition to moving one of the directions to shorten the distance between the light source and the reflective shade in the optical axis direction. Therefore, since the irradiation angle can be varied by moving both the Fresnel lens and the light source or the reflecting shade, the irradiation efficiency can be improved and the device can be made smaller.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係る一実施例の照射角可変電子閃光装
置の斜視図、第2図はその照射角可変を行う設定機構の
側面図で、(a)はテレ時、(b)はワイド時をそれぞ
れ示し、第3図はその各構成部材の位置関係の説明図で
、(a)は上面図を、(b)はそのAA線断面図をそれ
ぞれ示し、第4図はそのフレネルレンズの屈折力が強す
ぎる場合の光拡散状態説明図、第5図は同じく反射笠の
断面楕円形状の基準球面の半径Rとその深さDとの関係
による光拡散状態説明図で、(a)はR(Dの場合、(
b)はR〉Dの場合をそれぞれ示し、第6図は本発明の
他の実施例の斜視図、第7図は従来例の照射角可変電子
閃光装置゜の斜視図、第8図は別の従来例の照射角可変
電子閃光装置の断面図で、(a)はワイド時、(b)は
テレ時をそれぞれ示し、第9図は第8図の従来例による
照射状態説明図である。 11・・・フレネルレンズ、12.22・・・光源、1
3・・・反射笠、14・・・カム板、14a・・・カム
溝、14b・・・直線溝、15・・カイド板、15a・
・・直線溝。 第1図 (テl/暗) (b) (7イト吟) 11:7レイルレンス′゛ 12:光源 13:反射笠 14:i象 14a:刀ム糞 14b:i煉溝 15゜〃イト板 15a:直牒糞 第 図 12a 第 図 第 図 第8 (a) 図 (b)
FIG. 1 is a perspective view of a variable illumination angle electronic flash device according to an embodiment of the present invention, and FIG. 2 is a side view of a setting mechanism that changes the illumination angle. 3 is an explanatory diagram of the positional relationship of each component, (a) is a top view, (b) is a sectional view taken on the line AA, and FIG. 4 is a diagram showing the Fresnel lens. Fig. 5 is an explanatory diagram of the light diffusion state when the refractive power of is too strong, and Fig. 5 is also an explanatory diagram of the light diffusion state according to the relationship between the radius R of the reference sphere having an elliptical cross section of the reflective shade and its depth D, and (a) is R(D, if (
b) shows the case of R>D, FIG. 6 is a perspective view of another embodiment of the present invention, FIG. 7 is a perspective view of a conventional variable irradiation angle electronic flash device, and FIG. 8 is a different example. 9 is a sectional view of a conventional variable irradiation angle electronic flash device, in which (a) shows the wide angle and (b) shows the telephoto mode, and FIG. 9 is an explanatory diagram of the irradiation state according to the conventional example of FIG. 8. 11...Fresnel lens, 12.22...Light source, 1
3... Reflective shade, 14... Cam plate, 14a... Cam groove, 14b... Straight groove, 15... Guide plate, 15a.
...Straight groove. Figure 1 (Tele/Dark) (b) (7-item) 11:7 Rail Lens' 12: Light source 13: Reflective shade 14: i Elephant 14a: Sword dung 14b: i Brick groove 15゜ite plate 15a :Direct feces Figure 12a Figure Figure 8 (a) Figure (b)

Claims (1)

【特許請求の範囲】[Claims] 1 光源と、反射笠と、該反射笠の前面に配置されるフ
レネルレンズとを備えた照射角可変電子閃光装置におい
て、照射角を狭くする場合、該光源と該反射笠との光軸
方向の距離を縮める方向にいずれか一方を移動させると
ともに該フレネルレンズを前方へ移動させる照射角設定
手段を設けたことを特徴とする照射角可変電子閃光装置
1. In a variable illumination angle electronic flash device equipped with a light source, a reflective shade, and a Fresnel lens placed in front of the reflective shade, when narrowing the illumination angle, the direction of the optical axis between the light source and the reflective shade is 1. A variable illumination angle electronic flash device comprising an illumination angle setting means for moving one of the Fresnel lenses in a direction to shorten the distance and moving the Fresnel lens forward.
JP11223989A 1989-05-02 1989-05-02 Variable irradiation angle electronic flash light device Pending JPH02291538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11223989A JPH02291538A (en) 1989-05-02 1989-05-02 Variable irradiation angle electronic flash light device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11223989A JPH02291538A (en) 1989-05-02 1989-05-02 Variable irradiation angle electronic flash light device

Publications (1)

Publication Number Publication Date
JPH02291538A true JPH02291538A (en) 1990-12-03

Family

ID=14581730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11223989A Pending JPH02291538A (en) 1989-05-02 1989-05-02 Variable irradiation angle electronic flash light device

Country Status (1)

Country Link
JP (1) JPH02291538A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5852751A (en) * 1996-06-21 1998-12-22 West Electric Co., Ltd. Strobe light and image recorder containing that strobe light
US7577347B2 (en) 2005-07-14 2009-08-18 Fujifilm Corporation Image taking apparatus
US7657165B2 (en) 2005-07-14 2010-02-02 Fujifilm Corporation Image taking apparatus
WO2013157216A1 (en) * 2012-04-19 2013-10-24 パナソニック株式会社 Strobe device
US9086207B2 (en) 2011-12-19 2015-07-21 Nokia Technologies Oy Apparatus, methods, and non-transitory computer readable storage mediums for controlling light emitted by a flash unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5852751A (en) * 1996-06-21 1998-12-22 West Electric Co., Ltd. Strobe light and image recorder containing that strobe light
DE19726284B4 (en) * 1996-06-21 2009-12-31 Panasonic Photo & Lighting Co., Ltd. Flash device and imaging device comprising this flash device
US7577347B2 (en) 2005-07-14 2009-08-18 Fujifilm Corporation Image taking apparatus
US7657165B2 (en) 2005-07-14 2010-02-02 Fujifilm Corporation Image taking apparatus
US9086207B2 (en) 2011-12-19 2015-07-21 Nokia Technologies Oy Apparatus, methods, and non-transitory computer readable storage mediums for controlling light emitted by a flash unit
WO2013157216A1 (en) * 2012-04-19 2013-10-24 パナソニック株式会社 Strobe device
JP2013222167A (en) * 2012-04-19 2013-10-28 Panasonic Corp Strobe device
CN104220929A (en) * 2012-04-19 2014-12-17 松下知识产权经营株式会社 Strobe device

Similar Documents

Publication Publication Date Title
JP3891535B2 (en) Irradiation angle variable illumination device and photographing device using the same
US6807369B1 (en) Illumination device and photographing apparatus having the same
US20030007359A1 (en) Lighting device
US7254323B2 (en) Illumination optical system, illumination device and image-taking apparatus
JP2001066672A (en) Irradiation angle variable illuminator and photographing device using the same
JP2004191866A (en) Lighting device
JP2002236307A (en) Zoom stroboscopic device
US6986588B2 (en) Light emitting device and camera having the same
US5775790A (en) Illuminating optical system
US8964111B2 (en) Illumination apparatus and image pickup apparatus
JPH02291538A (en) Variable irradiation angle electronic flash light device
JPH08262538A (en) Illumination device
JPH04138439A (en) Illuminator
US7465081B2 (en) Lighting system
JPH02124547A (en) Variable stroboscope for illuminating angle
JP2005043688A (en) Variable irradiation angle strobe apparatus
JP2004077911A (en) Very-wide-angle adaptive zoom type electronic flash unit and zoom compact camera with zoom type electronic flash unit
JP5224880B2 (en) Illumination device and imaging device
JPH09138449A (en) Irradiating angle variable type illumination optical system
JP4280527B2 (en) Lighting device
JPH03231724A (en) Stroboscopic reflecting umbrella
JPH09179171A (en) Irradiation device
JP3100690B2 (en) Strobe device
JPH04147118A (en) Flash light emission device
JP2004061994A5 (en)