JPH01287544A - Red eye preventing device for full automatic camera - Google Patents
Red eye preventing device for full automatic cameraInfo
- Publication number
- JPH01287544A JPH01287544A JP11600088A JP11600088A JPH01287544A JP H01287544 A JPH01287544 A JP H01287544A JP 11600088 A JP11600088 A JP 11600088A JP 11600088 A JP11600088 A JP 11600088A JP H01287544 A JPH01287544 A JP H01287544A
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary light
- distance
- light
- subject
- red
- 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
Links
- 241000593989 Scardinius erythrophthalmus Species 0.000 title claims abstract description 19
- 230000002265 prevention Effects 0.000 claims abstract description 13
- 201000005111 ocular hyperemia Diseases 0.000 claims description 17
- 230000010365 information processing Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract 1
- 208000024335 physical disease Diseases 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004313 glare Effects 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Stroboscope Apparatuses (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、全自動カメラのフラッシュ撮影における赤目
防止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 red-eye prevention device for flash photography of a fully automatic camera.
〈従来の技術〉
従来、フラッシュ撮影において赤目防止に補助光を用い
る方法が特公昭５８−４８０８８号公報で知られており
、また、赤目防止のために、特開昭５４−５０３２４号
公報に記載されたズームレンズの焦点距離に応じて閃光
装置のホップアップ量を変える手段や実開昭５４−５３
４２９号公報に記載され几撮影距離に応じて閃光器と撮
影レンズの距離を変える手段が公知である。<Prior art> Conventionally, a method of using auxiliary light to prevent red-eye in flash photography is known from Japanese Patent Publication No. 58-48088, and a method for preventing red-eye is described in Japanese Patent Application Laid-Open No. 54-50324. Means for changing the amount of hop-up of a flash device according to the focal length of a zoom lens
There is a known means described in Japanese Patent No. 429, which changes the distance between the flash unit and the photographing lens according to the photographing distance.
〈発明が解決しようとする問題点〉
近年、ズーム組込みカメラが一般化し、特に長い焦点距
離が採用されるようになり、その結果大きく写るため、
赤目が目立つようになる。<Problems to be solved by the invention> In recent years, cameras with built-in zoom have become popular, and particularly long focal lengths have been adopted, resulting in larger images.
Red eyes become more noticeable.
ところが、カメラのサイズは限られており、閃光装置の
ホップアップにも限界がめるので、レンズ及び被写体の
目と、閃光発光部のなす角度を所定の大きさ以上にする
ことができなかった。However, since the size of the camera is limited and the hop-up of the flash unit is also limited, it has been impossible to make the angle between the lens and the subject's eye and the flash unit larger than a predetermined size.
そこで、赤目防止のためには前述の補助光利用方法を見
直す必要がある。Therefore, in order to prevent red-eye, it is necessary to review the above-mentioned method of using auxiliary light.
この補助光による効果は、（１）ひとみを絞らせるとい
う直接の効果、（２）カメラに目のピン）ｔ−合わせて
もらうという間接の効果、がろジ、相乗的に効果を大き
くしている。The effects of this auxiliary light are (1) the direct effect of narrowing the pupil, (2) the indirect effect of having the camera focus on the eye, and the synergistic effect of increasing the effect. There is.
しかし、補助光が明るすぎると、まぶしくて目をつぶっ
てしまったり、顔をしかめ友すしてしまうという欠点が
あり、また、約２秒間という点灯のために消費される電
気エネルギーはカメラにとっては相当な負担量になる。However, if the auxiliary light is too bright, it may cause you to close your eyes or make a face because of the glare, and the electrical energy consumed to turn it on for about 2 seconds is a considerable amount of energy for the camera. It becomes a heavy burden.
本発明は、前述従来例の問題点に鑑み、赤目防止のため
の補助光を利用する場合に被写体がまぶしさを最小限に
とどめかつ節電を行うことのできる全自動カメラの赤目
防止装置を提供することを目的とする。In view of the problems of the prior art described above, the present invention provides a red-eye prevention device for a fully automatic camera that can minimize glare on the subject and save power when using an auxiliary light for red-eye prevention. The purpose is to
く問題点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、被写体とカメ
ラとの距離を測るオートフォーカス装置と閃光装置と閃
光撮影に先だってカメラから被写体に向けて発光される
赤目防止用補助光装置を有するカメラにおいて、赤目防
止用補助光の明るさを該オートフォーカス装置の情報に
基づき切り換える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 an autofocus device that measures the distance between a subject and a camera, a flash device, and a flash device that emits light from the camera toward the subject prior to flash photography. A camera having a red-eye prevention auxiliary light device is provided with means for switching the brightness of the red-eye prevention auxiliary light based on information from the autofocus device.
ま念、被写体距離が所定の距離より近い時は該補助光は
点灯しないようにすることが好ましい。To be sure, it is preferable that the auxiliary light not be turned on when the subject distance is shorter than a predetermined distance.
く作用〉
前記のように構成された補助光による赤目防止装置は、
その補助光を有効に活用するためにオートフォーカス装
置の情報、すなわち被写体の距離に応じて補助光の明る
さを変化させるので、補助光が被写体にまぶし過ぎるこ
とがなくかつ節電を図ることができる。Effect> The red-eye prevention device using the auxiliary light configured as described above has the following effects:
In order to make effective use of the fill light, the brightness of the fill light is changed according to the information of the autofocus device, that is, the distance of the subject, so the fill light does not dazzle the subject too much and saves power. .
そして、補助光としてのランプは必要な時だけフル光量
の発光を行うように使用するので、ランプの寿命を長く
できる。Since the lamp as auxiliary light is used to emit the full amount of light only when necessary, the life of the lamp can be extended.
また、被写体距離が特に近い時は補助光は点灯しないよ
うにするので、更に補助光の節電とその寿命に有効でる
る。Furthermore, since the auxiliary light is not turned on when the subject is particularly close, it is further effective to save power and extend the life of the auxiliary light.
〈実施例〉
以下１本発明の実施例を第１図ないし第３図に基づいて
説明する。<Example> An example of the present invention will be described below with reference to FIGS. 1 to 3.
第１図はカメラの概略斜視図で、カメラ本体１はその前
面にはズームレンズ２、電子閃光器３、オートフォーカ
ス用測距窓４，５及び赤目防止のための補助光用ランプ
６を設け、その上面にはレリーズボタン７ ｆ−設Ｆｆ
ている。FIG. 1 is a schematic perspective view of the camera, and the camera body 1 is equipped with a zoom lens 2, an electronic flash 3, autofocus distance measuring windows 4 and 5, and an auxiliary light lamp 6 to prevent red-eye on the front side. , on the top surface is the release button 7 f-setting Ff.
ing.
第２図はカメラ作動回路のブロック図で、そのオートフ
ォーカス測距系は基線ｄだけ離れた測距窓４，５からの
入射光をそれぞれミラー８，９、結像レンズ１０．１１
を介してプリズム１２によりＣＯＤ等のラインセンサ１
３上に結像させ、２つの像を比較することで距離情報が
得られるようになし、その距離情報信号はオートフォー
カス（ＡＦ）情報処理回路１４を介してマイクロコンピ
ュータをコアとするＣＰＵ１５に接続されている。FIG. 2 is a block diagram of the camera operation circuit, and its autofocus distance measuring system collects incident light from distance measuring windows 4 and 5 separated by a base line d from mirrors 8 and 9 and imaging lenses 10 and 11, respectively.
Line sensor 1 such as COD by prism 12 through
3, and distance information is obtained by comparing the two images, and the distance information signal is connected to a CPU 15 whose core is a microcomputer via an autofocus (AF) information processing circuit 14. has been done.
該ＣＰＵ１５は閃光回路１６及び補助光回路１７にそれ
ぞれ接続して制御するようになっており、オートフォー
カスの情報に応じて補助光回路１７によりランプ６を流
れる電流を調整するようになっている。なお、１８は電
源でおる。The CPU 15 is connected to and controls a flash circuit 16 and an auxiliary light circuit 17, respectively, and the auxiliary light circuit 17 adjusts the current flowing through the lamp 6 in accordance with autofocus information. Note that 18 is powered by a power source.
以上の構成の本実施例の動作を第３図のフローチャート
ラ参照して説明する。The operation of this embodiment having the above configuration will be explained with reference to the flowchart shown in FIG.
まず、レリーズボタン７の操作によるレリーズ動作を開
始する（ステップ■）と、レリーズ開始信号によりＣＰ
Ｕ１５を介し補助光回路１７が作動して補助光ランプ６
が点灯しくステップ■）。First, when the release operation is started by operating the release button 7 (step ■), the CP
The auxiliary light circuit 17 is activated via U15 and the auxiliary light lamp 6 is activated.
Step ■).
オートフォーカス測距系によりＡＦ情報処理回路１４が
作動しくステップ■）、その距離情報が所定の距離以上
の場合（ステップ■）はその出力信号でＣＰＵ１５によ
り補助光回路１１制御して補助光ランプ６の光量を距離
情報に応じて調光する（ステップ■）。When the AF information processing circuit 14 is activated by the autofocus distance measuring system (Step ■), and the distance information is greater than a predetermined distance (Step ■), the CPU 15 controls the auxiliary light circuit 11 using the output signal to activate the auxiliary light lamp 6. The amount of light is adjusted according to the distance information (step ■).
次いで、ＣＰＵ１５からの制御信号により図示されない
シャッタ作動が開始するとともに閃光回路１６が作動し
て電子閃光器３が発光して撮影が行われ（ステップ■）
、撮影が終了する（ステップ■）。Next, a control signal from the CPU 15 starts a shutter operation (not shown), and at the same time, the flash circuit 16 is activated and the electronic flash device 3 emits light to take a picture (step 2).
, shooting ends (step ■).
また、ステップ■において、距離情報が所定の距離以下
の近距離の場合はＣＰＵ１５からの制御信号により補助
光ランプ６はオフとなって発光しない（ステップ■）で
、前述のステップ■の撮影動作となる。In addition, in step (2), if the distance information is a short distance less than a predetermined distance, the auxiliary light lamp 6 is turned off and does not emit light according to a control signal from the CPU 15 (step (2)), and the photographing operation in step (3) is repeated. Become.
第４図は本発明の他の実施例を示すものである。FIG. 4 shows another embodiment of the invention.
本実施例は補助光ランプの電流を合焦メカ機構に連動す
る可変抵抗器で制御するもので、モータ２０の回転力は
ギヤ系２１を介して距離カム２２を駆動するようになし
、該距離カム２２はその前面にカム部２２ａを有しかつ
その後部側面に接片部２２ｂ ’！を設け、該カム部２
２ａは撮影レンズＬｆ：保持したレンズホルダー２４に
突設したカムフォロアー２４ａと当接して該レンズホル
ダー２４が光軸方向のガイド軸２５に嵌合して移動可能
になっており、該接片部２２ｂは該距離カム２２と同心
的に配置したリング状プリント板２３上に摺接して該プ
リント板２３上のパターンと抵抗の組み合わせで電源２
７より補助光ランプ２６を流れる電流が変化するように
したものである。In this embodiment, the current of the auxiliary light lamp is controlled by a variable resistor linked to a focusing mechanism, and the rotational force of the motor 20 is configured to drive a distance cam 22 via a gear system 21, The cam 22 has a cam portion 22a on its front surface and a contact piece portion 22b' on its rear side surface. , and the cam portion 2
2a is a photographing lens Lf: it comes into contact with a cam follower 24a protruding from a held lens holder 24, and the lens holder 24 is fitted into a guide shaft 25 in the optical axis direction, making it movable; 22b is in sliding contact with a ring-shaped printed board 23 arranged concentrically with the distance cam 22, and is connected to a power source 2 by a combination of a pattern on the printed board 23 and a resistor.
7, the current flowing through the auxiliary light lamp 26 is changed.
以上の本実施例では１図示されないオートフォーカス測
距系の距離情報信号によジモータ２０の駆動を制御し距
離カム２２の回動でレンズホルダー２４を合焦位置に設
定するとともに補助光ランプ２６の明るさを所要の明る
さに調整する。In this embodiment, the drive of the motor 20 is controlled by a distance information signal from an autofocus distance measuring system (not shown), and the rotation of the distance cam 22 sets the lens holder 24 to the in-focus position, and the auxiliary light lamp 26 is Adjust the brightness to the desired brightness.
〈発明の効果〉
本発明は１以上説明したようにフラッシュ撮影時の赤目
防止用補助光がオートフォーカスの距離情報に基づいて
その明るさを変えるので、被写体にまぶしい思いをする
不快感を極力減じ、その消費エネルギーを最小限にして
節電を図ることができる。<Effects of the Invention> As explained above, the present invention changes the brightness of the red-eye prevention auxiliary light during flash photography based on the distance information of autofocus, thereby minimizing the discomfort caused by dazzling the subject. , it is possible to save power by minimizing energy consumption.
また、十分近く赤目の出るおそれのない距離では補助光
を発光することがないので、更に節電でき補助光ランプ
の寿命を長くすることができる効果がある。Further, since the auxiliary light is not emitted at a distance close enough to prevent red-eye, it is possible to further save power and extend the life of the auxiliary light lamp.
第１図は本発明に係る一実施例の全自動カメラの外観図
、第２図はその作動電気回路のブロック図、第３図はそ
の動作を説明するフローチャート。
第４図は本発明の他の実施例の概略構成図である。
１・・・カメラ本体、２・・・ズームレンズ、３・・・
電子閃光器、４，５・・・オートフォーカス用測距窓、
６゜２６・・・補助光ランプ、１３・・・ラインセンサ
、１４・・・オートフォーカス情報処理回路、１５・・
・ＣＰＵ、１６・・・閃光回路、１７・・・補助光回路
、２０・・・モータ、２２・・・距離カム、２２ａ・・
・カム部、 ２２ｂ・・・接片部、２３・・・プリント
板、２４・・・レンズホルダー。
２４ａ・・・カムフォロアー。
第１図
第２図
第３図
第４図FIG. 1 is an external view of a fully automatic camera according to an embodiment of the present invention, FIG. 2 is a block diagram of its operating electric circuit, and FIG. 3 is a flowchart explaining its operation. FIG. 4 is a schematic diagram of another embodiment of the present invention. 1...Camera body, 2...Zoom lens, 3...
Electronic flash, 4, 5... autofocus distance measuring window,
6゜26...Auxiliary light lamp, 13...Line sensor, 14...Autofocus information processing circuit, 15...
・CPU, 16...Flash circuit, 17...Auxiliary light circuit, 20...Motor, 22...Distance cam, 22a...
-Cam part, 22b... Contact piece part, 23... Printed board, 24... Lens holder. 24a...Cam follower. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
置と、閃光装置と、閃光撮影に先立つてカメラから被写
体に向けて発光される赤目防止用補助光装置を有するカ
メラにおいて、該赤目防止用補助光の明るさを該オート
フォーカス装置の距離情報に基づき調整する手段を設け
たことを特徴とする全自動カメラの赤目防止装置。 ２ 該赤目防止用補助光はオートフォーカス装置の距離
情報が所定の距離より近い時は点灯しないように構成し
たことを特徴とする請求項１記載の全自動カメラの赤目
防止装置。[Scope of Claims] 1. A camera having an autofocus device for measuring the distance between a subject and a camera, a flash device, and a red-eye prevention auxiliary light device that emits light from the camera toward the subject prior to flash photography. A red-eye prevention device for a fully automatic camera, comprising means for adjusting the brightness of a red-eye prevention auxiliary light based on distance information of the autofocus device. 2. The red-eye prevention device for a fully automatic camera according to claim 1, wherein the red-eye prevention auxiliary light is configured not to turn on when the distance information of the autofocus device is closer than a predetermined distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11600088A JPH01287544A (en) | 1988-05-14 | 1988-05-14 | Red eye preventing device for full automatic camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11600088A JPH01287544A (en) | 1988-05-14 | 1988-05-14 | Red eye preventing device for full automatic camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01287544A true JPH01287544A (en) | 1989-11-20 |
Family
ID=14676362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11600088A Pending JPH01287544A (en) | 1988-05-14 | 1988-05-14 | Red eye preventing device for full automatic camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01287544A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03152520A (en) * | 1989-11-08 | 1991-06-28 | Olympus Optical Co Ltd | Photographing device |
| JPH03264933A (en) * | 1990-03-15 | 1991-11-26 | Canon Inc | Stroboscopic device |
| JPH04355738A (en) * | 1991-06-03 | 1992-12-09 | Fuji Photo Optical Co Ltd | Auxiliary lamp incorporated in camera |
| JPH04355737A (en) * | 1991-06-03 | 1992-12-09 | Fuji Photo Optical Co Ltd | Auxiliary lamp incorporated in camera |
| JPH04133238U (en) * | 1991-06-03 | 1992-12-11 | 富士写真光機株式会社 | camera case |
| JP2008242272A (en) * | 2007-03-28 | 2008-10-09 | Fujifilm Corp | Auxiliary light device for automatic focusing |
-
1988
- 1988-05-14 JP JP11600088A patent/JPH01287544A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03152520A (en) * | 1989-11-08 | 1991-06-28 | Olympus Optical Co Ltd | Photographing device |
| JPH03264933A (en) * | 1990-03-15 | 1991-11-26 | Canon Inc | Stroboscopic device |
| JPH04355738A (en) * | 1991-06-03 | 1992-12-09 | Fuji Photo Optical Co Ltd | Auxiliary lamp incorporated in camera |
| JPH04355737A (en) * | 1991-06-03 | 1992-12-09 | Fuji Photo Optical Co Ltd | Auxiliary lamp incorporated in camera |
| JPH04133238U (en) * | 1991-06-03 | 1992-12-11 | 富士写真光機株式会社 | camera case |
| JP2008242272A (en) * | 2007-03-28 | 2008-10-09 | Fujifilm Corp | Auxiliary light device for automatic focusing |
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