JPS6311906A - Focus detecting device - Google Patents
Focus detecting deviceInfo
- Publication number
- JPS6311906A JPS6311906A JP15704686A JP15704686A JPS6311906A JP S6311906 A JPS6311906 A JP S6311906A JP 15704686 A JP15704686 A JP 15704686A JP 15704686 A JP15704686 A JP 15704686A JP S6311906 A JPS6311906 A JP S6311906A
- Authority
- JP
- Japan
- Prior art keywords
- optical axis
- focus detection
- conversion element
- photoelectric conversion
- horizontal
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 210000001747 pupil Anatomy 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000003491 array Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 21
- 238000003384 imaging method Methods 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Focusing (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、いわゆるマルチ測距を可能とした焦点検出装
置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a focus detection device that enables so-called multi-distance measurement.
（従来の技術・発明が解決しようとする問題点）従来、
焦点検出装置としては、第７図に示すように、光軸１上
の撮影レンズ２の後方にコンデンサレンズ３が設けられ
、該コンデンサレンズ３の後方に光軸■を対称軸とする
結像レンズ４ａ、４ｂが設けられ、該各結像レンズ４ａ
、４ｂ後方の結像面にラインセンサ（光電変換素子列）
５ａ、５ｂが設けられたものが提案されている（特開昭
５９−１２６５１７号公報参照）。なお、６はフィルム
露光面と等価な面、７は相関器である。(Problems to be solved by conventional technology/invention) Conventionally,
As a focus detection device, as shown in FIG. 7, a condenser lens 3 is provided behind a photographing lens 2 on an optical axis 1, and an imaging lens whose symmetry axis is the optical axis (2) is provided behind the condenser lens 3. 4a and 4b are provided, and each imaging lens 4a
, line sensor (photoelectric conversion element array) on the imaging plane behind 4b
5a and 5b have been proposed (see Japanese Unexamined Patent Publication No. 126517/1983). Note that 6 is a surface equivalent to the film exposure surface, and 7 is a correlator.
そして、撮影レンズ２の射出瞳面の互いに異なる領域２
ａ、２ｂを通過する基準部光束ａと参照部光束すとを、
ラインセンサ５ａ、５ｂでそれぞれ受光して、像の光分
布パータンを電気信号に変換し、それらの相関位置を相
関器７で求めて自動焦点検出を行ない、相関器７からの
ずれ信号に基づき駆動機構で撮影レンズ２を前後動させ
ることにより、自動焦点調節を行なうものである。Then, mutually different regions 2 on the exit pupil plane of the photographing lens 2
The reference part light flux a and the reference part light flux a and 2b passing through a and 2b are,
The line sensors 5a and 5b each receive the light, convert the light distribution pattern of the image into an electrical signal, find their correlated position with the correlator 7, perform automatic focus detection, and drive based on the shift signal from the correlator 7. Automatic focus adjustment is performed by moving the photographing lens 2 back and forth using a mechanism.
ところで、上記ラインセンサ５ａ、５ｂは、通常、光軸
ｌを含む位置で撮影レンズ２に対して水平方向に設けら
れているだけであったから、水平線などの自動焦点検出
が不可能であるという問題があった。By the way, since the line sensors 5a and 5b are usually only provided horizontally with respect to the photographing lens 2 at a position that includes the optical axis l, there is a problem that automatic focus detection of the horizon etc. is impossible. was there.
本発明は、上記従来の問題点に鑑みてなされたもので、
水平方向の焦点検出と同時に垂直方向の焦点検出をも行
なえるようにして、水平線などの自動焦点検出を可能に
することを基本的な目的とするものである。The present invention has been made in view of the above-mentioned conventional problems.
The basic objective is to enable automatic focus detection of the horizon, etc. by making it possible to perform focus detection in the vertical direction as well as in the horizontal direction.
（問題点を解決するための手段）
このため本発明は、撮影レンズの射出瞳面の互いに異な
る領域を通過する基準部光束と参照部光束とを光電変換
素子列でそれぞれ受光して、焦点検出を行なう焦点検出
装置において、上記光電変換素子列は、少なくとも位置
あるいは方向が異なる複数の光電変換素子列で構成され
ていて、一方の光電変換素子列は光軸を含む位置に配置
され、他方の光電変換素子列は光軸を含まない位置にあ
るとともにその方向は光軸と光軸外の光電変換素子列の
配置された位置とを結ぶ直線に対してほぼ直角な方向を
なしているいることを特徴とするものである。(Means for Solving the Problems) Therefore, the present invention detects a focus by detecting a reference part light flux and a reference part light flux passing through different regions of the exit pupil plane of a photographic lens by a photoelectric conversion element array. In the focus detection device that performs The photoelectric conversion element array is located at a position that does not include the optical axis, and its direction is approximately perpendicular to a straight line connecting the optical axis and the position where the photoelectric conversion element array is arranged outside the optical axis. It is characterized by:
（実施例）
以下、本発明の実施例を添付図面について詳細に説明す
る。(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図に示すように、−眼レフカメラには、光軸１０上
に撮影レンズ１１が設けられ、該撮影レンズ１１の後方
に主ミラー１２が設けられ、該主ミラー１２の後方にフ
ィルム露光面１３が設けられていて、撮影レンズｉｔを
通過した撮影用光束が主ミラー１２で上方に反射されて
ファインダ光学系（不図示）に導かれるようになる。As shown in FIG. 1, the -eye reflex camera is provided with a photographing lens 11 on the optical axis 10, a main mirror 12 is provided behind the photographic lens 11, and a film exposure lens is provided behind the main mirror 12. A surface 13 is provided so that the photographing light beam that has passed through the photographing lens it is reflected upward by the main mirror 12 and guided to a finder optical system (not shown).
該主ミラー１２は、少なくとも一部がハーフミラ−に形
成されていて、該主ミラー１２のハーフミラ一部と上記
フィルム露光面１３との間には、副ミラー１４が設けら
れ、主ミラー１２のハーフミラ一部を透過した焦点検出
用光束を副ミラー１４で下方に反射して焦点検出装置１
５に導くようになる。At least a part of the main mirror 12 is formed into a half mirror, and a sub mirror 14 is provided between a part of the half mirror of the main mirror 12 and the film exposure surface 13. The focus detection device 1 reflects the focus detection light beam that has partially passed through the sub mirror 14 downward.
It will lead to 5.
撮影時には、主ミラー１２及び副ミラー１４は上方に回
動されて光軸ｌＯ上から退避され、撮影レンズ２を通過
した撮影用光束はフィルム露光面１３に結像して、フィ
ルム露光面１３に画像的。During photography, the main mirror 12 and the secondary mirror 14 are rotated upward and retracted from the optical axis lO, and the photographing light flux that has passed through the photographic lens 2 forms an image on the film exposure surface 13. Image-like.
露光を与えるようになる。It will give you exposure.
上記焦点検出装置１５には、ＣＯＤなどのラインセンサ
（光電変換素子列）１６ａ、１６ｂ、１６ｃを取り付け
たセンサ基板１７が設けられている。The focus detection device 15 is provided with a sensor substrate 17 on which line sensors (photoelectric conversion element rows) 16a, 16b, and 16c, such as COD, are attached.
該ラインセンサ１６ａ＝１６ｃのうち、１個のラインセ
ンサ１６ａは、光軸ｌＯを含む水平位置に配置され、２
個のラインセンサ１６ｂ、１６ｃは、ラインセンサ１６
ａの両側方で光軸１０を含まない垂直位置に配置されて
いる。ラインセンサ１６ｂ。Among the line sensors 16a=16c, one line sensor 16a is arranged at a horizontal position including the optical axis IO, and 2
The line sensors 16b and 16c are
They are arranged at vertical positions not including the optical axis 10 on both sides of a. Line sensor 16b.
１６ｃは、ラインセンサ１６ａに対して略９０度に設定
されている。16c is set at approximately 90 degrees with respect to the line sensor 16a.
該センサ基板１７の前方にはセパレータレンズ板１８が
設けられ、該セパレータレンズ板１８には、上記各ライ
ンセンサ１６ａ〜１６ｃに対応するセパレータレンズ１
８ａ＝１８ｃが一体的に形成されている。A separator lens plate 18 is provided in front of the sensor substrate 17, and the separator lens plate 18 has separator lenses 1 corresponding to each of the line sensors 16a to 16c.
8a=18c are integrally formed.
該セパレータレンズ板１８の直前には絞りマスク１９が
設けられ、該絞りマスク１９には、上記セパレータレン
ズ１８ａ〜１８ｃに対応する開口１９ａ＝１９ｃが形成
されている。An aperture mask 19 is provided immediately in front of the separator lens plate 18, and the aperture mask 19 has openings 19a=19c corresponding to the separator lenses 18a to 18c.
該絞りマスク１９と上記副ミラー１４とに対向する反射
ミラー２０が設けられ、該反射ミラー２０は、副ミラー
１４で下方へ反射された焦点検出用光束を、絞りマスク
開口１９ａ〜１９ｃ、セパレータレンズ１８ａ〜１８ｃ
を介してラインセンサ１６ａ〜１６ｃに導くようになる
。A reflecting mirror 20 is provided that faces the aperture mask 19 and the sub-mirror 14, and the reflecting mirror 20 directs the focus detection light beam reflected downward by the sub-mirror 14 to the aperture mask apertures 19a to 19c and the separator lens. 18a-18c
The line sensors 16a to 16c are guided through the line sensors 16a to 16c.
該反射ミラー２０と上記副ミラー１４との間には、上記
絞りマスク開口１９ａ＝１９ｃに対向するコンデンサレ
ンズ２１ａ〜２１ｃが設けられ、該コンデンサレンズ２
１ａ〜２１ｃの上面には、焦点検出用光束を、位置と方
向が異なるラインセンサ１６ａ＝１６ｃに対応させるよ
うに分離するための開口２２ａ〜２２ｃを有する視野マ
スク２２が設けられている。Condenser lenses 21a to 21c facing the aperture mask opening 19a=19c are provided between the reflection mirror 20 and the submirror 14, and the condenser lenses 2
A field mask 22 having openings 22a to 22c for separating the focus detection light flux so as to correspond to line sensors 16a=16c having different positions and directions is provided on the upper surface of each of 1a to 21c.
しかして、第７図の従来例と同様にして、撮影レンズ１
１の射出瞳面の互いに異なる領域１１ａとｌｌｂ、Ｉｌ
ｃとｌｉｄを通過する基準部光束ａと参照部光束すとを
、各ラインセンサ１６ａ〜１６ｃでそれぞれ受光して、
像の光分布パターンを電気信号に変換し、それらの相関
関係を相関器（不図示）で求めて自動焦点検出を行ない
、相関器からのずれ信号に基づき駆動機構で撮影レンズ
１１を前後動させることにより、自動焦点調節を行なう
。Therefore, in the same manner as the conventional example shown in FIG.
Mutually different regions 11a, llb, and Il of the exit pupil plane of No. 1
The reference part light flux a and the reference part light flux a passing through c and lid are received by each of the line sensors 16a to 16c,
The light distribution pattern of the image is converted into an electrical signal, the correlation between them is determined by a correlator (not shown), automatic focus detection is performed, and the photographing lens 11 is moved back and forth by a drive mechanism based on the deviation signal from the correlator. This allows automatic focus adjustment.
この場合、第７図の従来例では、水平位置のラインセン
サ１６ａに対応するラインセンサ（５ａ。In this case, in the conventional example shown in FIG. 7, the line sensor (5a) corresponds to the line sensor 16a in the horizontal position.
５ｂ）のみであったから、水平線などの自動焦点検出が
不可能であったが、第１図の本実施例では、水平位置の
ラインセンサ１６ａに加えて、垂直位置にもラインセン
サ１６ｂ、１６ｃが設けられているので、水平方向と垂
直方向の焦点検出が同時に行なえることになり、水平線
などの焦点検出も可能となったのである。5b), it was impossible to automatically detect the horizontal line, etc. However, in the present embodiment shown in FIG. Because of this, focus detection in the horizontal and vertical directions can be performed simultaneously, making it possible to detect focus on the horizon, etc.
一方、ラインセンサ１６ａは、光軸ｌＯを含み所定長さ
でもって配置されているので問題はないが、ラインセン
サ１６ｂ、１６ｃは、光軸１０を含まない垂直位置に配
置されていることから、各種交換レンズを考慮したとき
、焦点検出用光束がケラレにくい配置、つまり、瞳の余
裕量が最も大きくなるように配慮することが重要となる
。On the other hand, there is no problem because the line sensor 16a is arranged with a predetermined length that includes the optical axis lO, but the line sensors 16b and 16c are arranged at vertical positions that do not include the optical axis 10. When considering various types of interchangeable lenses, it is important to arrange the focus detection light beam so that it is unlikely to be eclipsed, that is, to maximize the pupil margin.
そこで、次に、ラインセンサ１６ｂ、１６ｃの位置と方
向について説明する。Therefore, next, the positions and directions of the line sensors 16b and 16c will be explained.
第２図は光軸１０上のフィルム等価面１３°上の一点に
、撮影レンズ１１から到達する光束の像高による変化の
一例を示したものである。FIG. 2 shows an example of a change in the luminous flux that reaches a point on the film equivalent plane 13° on the optical axis 10 from the photographic lens 11 depending on the image height.
同図で明らかなように、フィルム等価面１３゜上の光軸
１０と交わる点Ａに入射する光束は絞り開口Ｐで規制さ
れるが（ｈ＝０で示す円）、光軸１０外の点Ｂに入射す
る光束は、撮影レンズ１１の複数の開口Ｌ＊、Ｐ、Ｌ＋
で規制され（ｈ〉０で示す異形開口）、斜線で示す光束
となる。As is clear from the figure, the light flux incident on the point A that intersects the optical axis 10 on the film equivalent plane 13° is regulated by the diaphragm aperture P (circle indicated by h=0); The light beam incident on B is transmitted through multiple apertures L*, P, L+ of the photographing lens 11.
(unshaped aperture shown by h>0), resulting in a light flux shown by diagonal lines.
そして、この異形開口ｈ＞ｏは、フィルム等価面１３°
上で点Ｂが光軸１０から離れるほど小さくなり、それら
点Ｂのずれ方向に対して小さくなるが、ずれ方向に対し
て垂直な方向はそれほど影響を受けずに小さくならない
ことがわかる。And, this irregular opening h>o is 13 degrees on the film equivalent surface.
It can be seen from the above that the point B becomes smaller as it moves away from the optical axis 10, and becomes smaller with respect to the direction of deviation of these points B, but the direction perpendicular to the direction of deviation is not affected so much and does not become smaller.
かかる考察に基づいて、光軸１０を含まないＢ点にライ
ンセンサ１６ｂ（１６ｃ）を配置する場合、第３図に示
すように、Ａ点で水平位置のラインセンサ１６ａと同方
向、つまり水平位置にラインセンサｔ６ｂ（１６ｃ）を
配置すると、第４図（ａ）及び第４図（ｂ）に示すよう
に、撮影レンズ１１に対して、モジュール化された焦点
検出装置１５の位置及び角度調整を行なったとき、調整
不足により基準部光束ａと参照部光束すが正規位置（実
線で示す。）からある量Δだけ瞳面上でずれると（鎖線
で示す。）、水平方向には光束がケラレやすい状態であ
るので、きびしい調整が要求されることになる。Based on this consideration, when the line sensor 16b (16c) is placed at point B, which does not include the optical axis 10, as shown in FIG. When the line sensor t6b (16c) is placed at When the reference part light flux a and the reference part light flux a deviate from the normal position (shown by the solid line) on the pupil plane by a certain amount Δ (shown by the chain line) due to insufficient adjustment, the light flux will be eclipsed in the horizontal direction. Since the situation is easy, severe adjustments will be required.
これに対して、第５図に示すように、Ａ点で水平位置の
ラインセンサ１６ａに対して略９０度方向、つまり垂直
位置にラインセンサ１６ｂ（１６ｃ）を配置すると、第
６図（ａ）及び第６図（ｂ）に示すように、基準部光束
ａと参照部光束すが正規位置（実線で示す。）からある
量Δだけ瞳面上でずれても（鎖線で示す。）、水平、垂
直方向ともに光束がケラレにくい状態であるので、緩や
かな調整でよくなるのである。On the other hand, as shown in FIG. 5, if the line sensor 16b (16c) is placed approximately 90 degrees to the line sensor 16a in the horizontal position at point A, that is, in a vertical position, as shown in FIG. And as shown in FIG. 6(b), even if the standard part light flux a and the reference part light flux a deviate from the normal position (shown by the solid line) by a certain amount Δ on the pupil plane (shown by the chain line), the horizontal Since the luminous flux is less likely to be eclipsed in both the vertical direction, a gentle adjustment is sufficient.
従って、光軸ｌＯを含まないＢ点にラインセンサ１６ｂ
、１６ｃを配置する場合には、水平位置のラインセンサ
１６ａに対して、第５図及び第６図（ａ）、 （ｂ）で
示したような垂直位置に配置するのが最適であることが
わかる。Therefore, the line sensor 16b is located at point B which does not include the optical axis lO.
, 16c, it is best to arrange them in vertical positions as shown in FIGS. 5 and 6(a) and (b) with respect to the horizontal line sensor 16a. Recognize.
以上の説明においては、簡単のために光軸を含むライン
センサを水平に配置したが、光軸を含むラインセンサの
ケラレに対する方向の制限は、撮影レンズの瞳開口が光
軸対称であるかぎり問題とはならない。また、光軸を含
まないラインセンサに対しても、撮影レンズの瞳開口を
制限する複数の開口が光軸対称であるかぎり、光軸に対
して動径方向に直角な方向（サジタル方向）にラインセ
ンサ、セパレータレンズ及び絞りマイクを配置すれば、
同様の議論ができる。例えば、本実施例の変形例を示す
第８図において、ラインセンサ１６ａと１６ａ’とは撮
影レンズによるケラレに対しては等価であり、１６ｂ、
１６ｃと １６ｄ、１６ｅ、１６ｆも撮影レンズのケラ
レに対しては等価となり、このようなラインセンサ１６
ａ’及び１６ｄ、１６ｅ。In the above explanation, the line sensor including the optical axis is arranged horizontally for simplicity, but the restriction on the direction of vignetting of the line sensor including the optical axis is a problem as long as the pupil aperture of the photographing lens is symmetrical with the optical axis. It is not. In addition, even for line sensors that do not include an optical axis, as long as the multiple apertures that limit the pupil aperture of the photographing lens are symmetrical about the optical axis, the direction perpendicular to the radial direction (sagittal direction) to the optical axis If you place the line sensor, separator lens and aperture microphone,
A similar argument can be made. For example, in FIG. 8 showing a modification of the present embodiment, line sensors 16a and 16a' are equivalent with respect to vignetting caused by the photographic lens, and line sensors 16b,
16c, 16d, 16e, and 16f are also equivalent to the vignetting of the photographing lens, and such line sensor 16
a' and 16d, 16e.
＋６ｆを用いてもケラレのない状態を得ることができる
。Even if +6f is used, a state without vignetting can be obtained.
（発明の効果）
本発明によれば、位置と方向が異なる複数の充電変換素
子列の内、例えば一方は光軸を含む水平位置に配置し、
他方は光軸を含まない垂直位置に配置したものであるか
ら、水平方向と垂直方向の焦点検出が同時に行なえるも
ので、水平線などの自動焦点検出も可能となり、多種多
様な被写体に対する合焦確率が格段に向上するようにな
る。(Effects of the Invention) According to the present invention, among a plurality of charging conversion element arrays having different positions and directions, for example, one is arranged at a horizontal position including the optical axis,
The other one is placed in a vertical position that does not include the optical axis, so focus detection in the horizontal and vertical directions can be performed simultaneously, and automatic focus detection of horizons and other objects is also possible, increasing the probability of focus for a wide variety of subjects. will improve significantly.
また、水車方向と垂直方向の焦点検出が同時に行なえる
ことから、動く被写体に対するファインダーでの追随が
容易になり、この点からも合焦確率が向上するようにな
る。Furthermore, since focus detection can be performed simultaneously in the water wheel direction and in the vertical direction, it becomes easier to follow a moving subject with the finder, and from this point of view as well, the probability of focus is improved.
さらに、光軸を含まない光電変換素子列については、各
種交換レンズに対して焦点検出用光束がケラレにくい配
置となる。そして、仮にケラしたとしても、基準部光束
と参照部光束が、同様なケラレ方となり、しかも、両光
束の光束中心はケラレによって変化ないので、合焦精度
が高い状態で複数測距が可能となる。Furthermore, the photoelectric conversion element array that does not include the optical axis is arranged so that the focus detection light beam is unlikely to be eclipsed with respect to various types of interchangeable lenses. Even if vignetting occurs, the standard and reference beams will be vignetted in the same way, and the centers of both beams will not change due to vignetting, making it possible to perform multiple distance measurements with high focusing accuracy. Become.
第１図は本発明に係る焦点検出装置の斜視図、第２図は
焦点検出用光束のケラレ状態を示す図、第３図はライン
センサを水平配置した焦点検出装置の斜視図、第４図（
ａ）は第３図のフィルム等側面の正面図、第４図（ｂ）
は第３図の異形開口に対するラインセンサのずれを示す
正面図、第５図はラインセンサを垂直配置した焦点検出
装置の斜視図、第６図（ａ）は第５図のフィルム等価面
の正面図、第６図（ｂ）は第５図の異形開口に対するラ
インセンサのずれを示す正面図、第７図は従来の焦点検
出装置の側面図、第８図は第１図の変形例を示す図であ
る。
ｌＯ・・・光軸、 １１・・・撮影レンズ、
１３・・・フィルム露光面、１４・・・副ミラー、１５
・・・焦点検出装置、
１６ａ＝１６ｃ・・・ラインセンサ（光電変換素子列）
、Ａ・・・光軸を含む位置、
Ｂ・・・光軸を含まない位置、
ａ・・・基準部光束、 ｂ・・・参照部光束。
特許出願人 ミノルタカメラ株式会社
代 理 人 弁理士 青白 葆 ほか２名１１２図
・
第４保（０）
第６図（０）FIG. 1 is a perspective view of a focus detection device according to the present invention, FIG. 2 is a diagram showing a state of vignetting of a focus detection light beam, FIG. 3 is a perspective view of a focus detection device in which a line sensor is arranged horizontally, and FIG. 4 (
a) is a front view of the side of the film etc. in Figure 3, Figure 4(b)
is a front view showing the misalignment of the line sensor with respect to the irregularly shaped aperture in Fig. 3, Fig. 5 is a perspective view of a focus detection device in which the line sensor is vertically arranged, and Fig. 6(a) is a front view of the film equivalent surface in Fig. 5. 6(b) is a front view showing the deviation of the line sensor with respect to the irregularly shaped aperture shown in FIG. 5, FIG. 7 is a side view of a conventional focus detection device, and FIG. 8 is a modification of FIG. 1. It is a diagram. lO...Optical axis, 11...Photographing lens,
13...Film exposure surface, 14...Secondary mirror, 15
...Focus detection device, 16a=16c...Line sensor (photoelectric conversion element array)
, A...Position including the optical axis, B...Position not including the optical axis, a...Reference part light flux, b...Reference part light flux. Patent applicant: Representative of Minolta Camera Co., Ltd. Patent attorney: Aobai Ao and 2 others 112 illustrations
・ 4th Preservation (0) Fig. 6 (0)
Claims (2)
する基準部光束と参照部光束とを光電変換素子列でそれ
ぞれ受光して、焦点検出を行なう焦点検出装置において
、 上記光電変換素子列は、少なくとも位置あるいは方向が
異なる複数の光電変換素子列で構成されていて、一方の
光電変換素子列は光軸を含む位置に配置され、他方の光
電変換素子列は光軸を含まない位置あるとともにその方
向は光軸と光軸外の光電変換素子列の配置された位置と
を結ぶ直線に対してほぼ直角な方向をなしていることを
特徴とする焦点検出装置。(1) In a focus detection device that performs focus detection by receiving a reference portion light beam and a reference portion light beam passing through mutually different regions of the exit pupil plane of a photographic lens by a photoelectric conversion element array, the photoelectric conversion element array is , is composed of a plurality of photoelectric conversion element rows that are at least different in position or direction, one photoelectric conversion element row is arranged at a position that includes the optical axis, and the other photoelectric conversion element row is arranged at a position that does not include the optical axis. A focus detection device characterized in that the direction thereof is substantially perpendicular to a straight line connecting an optical axis and a position where a photoelectric conversion element array is arranged outside the optical axis.
変換素子列は光軸を含む位置に配置され、少なくとも１
つの他方の光電変換素子列は、光軸を含まない位置に、
光軸を含む位置に配置された光電変換素子列に対してほ
ぼ直角な方向をなして配置されていることを特徴する特
許請求の範囲第１項記載の焦点検出装置。(2) In the plurality of photoelectric conversion element arrays, one of the photoelectric conversion element arrays is arranged at a position including the optical axis, and at least one
The other photoelectric conversion element row is located at a position that does not include the optical axis.
2. The focus detection device according to claim 1, wherein the focus detection device is arranged in a direction substantially perpendicular to a photoelectric conversion element array arranged at a position including the optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61157046A JPH0820589B2 (en) | 1986-07-02 | 1986-07-02 | Focus detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61157046A JPH0820589B2 (en) | 1986-07-02 | 1986-07-02 | Focus detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6311906A true JPS6311906A (en) | 1988-01-19 |
| JPH0820589B2 JPH0820589B2 (en) | 1996-03-04 |
Family
ID=15641010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61157046A Expired - Lifetime JPH0820589B2 (en) | 1986-07-02 | 1986-07-02 | Focus detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0820589B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6388511A (en) * | 1986-10-01 | 1988-04-19 | Canon Inc | Focus detector |
| US5068682A (en) * | 1988-11-16 | 1991-11-26 | Nikon Corporation | Focus adjuster |
| US5160834A (en) * | 1989-12-01 | 1992-11-03 | Nikon Corporation | Multidirectional divided-pupil focus detecting apparatus |
| US5233173A (en) * | 1990-10-01 | 1993-08-03 | Nikon Corporation | Focus detecting apparatus with multi-directional off axis detection areas |
| US5241167A (en) * | 1990-11-07 | 1993-08-31 | Canon Kabushiki Kaisha | Photosensor device including means for designating a plurality of pixel blocks of any desired size |
| US5311004A (en) * | 1991-10-17 | 1994-05-10 | Nikon Corporation | Focus detecting apparatus with gaze detection and focus area changing |
| US5365302A (en) * | 1992-05-01 | 1994-11-15 | Olympus Optical Company, Ltd. | Focus area setting apparatus of camera |
| US5428420A (en) * | 1991-08-28 | 1995-06-27 | Canon Kabushiki Kaisha | Focus detecting apparatus having photoelectric area sensors |
| US5500519A (en) * | 1993-12-27 | 1996-03-19 | Nikon Corporation | Focus detection device and method of adjusting focus detection device comprising independent pupil adjustment of moveable field lenses |
| US5615399A (en) * | 1991-08-28 | 1997-03-25 | Canon Kabushiki Kaisha | Focus detecting apparatus having photoelectric area sensors |
| US6574437B2 (en) | 2000-06-21 | 2003-06-03 | Pentax Corporation | Focus detection apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55111924A (en) * | 1979-02-20 | 1980-08-29 | Ricoh Co Ltd | Focusing detector |
| JPS59143112A (en) * | 1983-02-05 | 1984-08-16 | Canon Inc | Focal point detector |
| JPS60177330A (en) * | 1984-02-24 | 1985-09-11 | Canon Inc | Hand-shake detector of camera |
-
1986
- 1986-07-02 JP JP61157046A patent/JPH0820589B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55111924A (en) * | 1979-02-20 | 1980-08-29 | Ricoh Co Ltd | Focusing detector |
| JPS59143112A (en) * | 1983-02-05 | 1984-08-16 | Canon Inc | Focal point detector |
| JPS60177330A (en) * | 1984-02-24 | 1985-09-11 | Canon Inc | Hand-shake detector of camera |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6388511A (en) * | 1986-10-01 | 1988-04-19 | Canon Inc | Focus detector |
| EP0661568A2 (en) * | 1988-11-16 | 1995-07-05 | Nikon Corporation | Focus adjuster |
| US5068682A (en) * | 1988-11-16 | 1991-11-26 | Nikon Corporation | Focus adjuster |
| US5138357A (en) * | 1988-11-16 | 1992-08-11 | Nikon Corporation | Focus adjuster |
| EP0661568A3 (en) * | 1988-11-16 | 1997-06-04 | Nippon Kogaku Kk | Focus adjuster. |
| US5160834A (en) * | 1989-12-01 | 1992-11-03 | Nikon Corporation | Multidirectional divided-pupil focus detecting apparatus |
| US5233173A (en) * | 1990-10-01 | 1993-08-03 | Nikon Corporation | Focus detecting apparatus with multi-directional off axis detection areas |
| US5241167A (en) * | 1990-11-07 | 1993-08-31 | Canon Kabushiki Kaisha | Photosensor device including means for designating a plurality of pixel blocks of any desired size |
| US5485004A (en) * | 1990-11-07 | 1996-01-16 | Canon Kabushiki Kaisha | Photosensor device including means for designating a plurality of pixel blocks of any desired size |
| US5428420A (en) * | 1991-08-28 | 1995-06-27 | Canon Kabushiki Kaisha | Focus detecting apparatus having photoelectric area sensors |
| US5615399A (en) * | 1991-08-28 | 1997-03-25 | Canon Kabushiki Kaisha | Focus detecting apparatus having photoelectric area sensors |
| US5784655A (en) * | 1991-08-28 | 1998-07-21 | Canon Kabushiki Kaisha | Focus detecting apparatus having photoelectric area sensors |
| US5311004A (en) * | 1991-10-17 | 1994-05-10 | Nikon Corporation | Focus detecting apparatus with gaze detection and focus area changing |
| US5365302A (en) * | 1992-05-01 | 1994-11-15 | Olympus Optical Company, Ltd. | Focus area setting apparatus of camera |
| US5500519A (en) * | 1993-12-27 | 1996-03-19 | Nikon Corporation | Focus detection device and method of adjusting focus detection device comprising independent pupil adjustment of moveable field lenses |
| US6574437B2 (en) | 2000-06-21 | 2003-06-03 | Pentax Corporation | Focus detection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0820589B2 (en) | 1996-03-04 |
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