JPS634184Y2 - - Google Patents

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Publication number
JPS634184Y2
JPS634184Y2 JP178087U JP178087U JPS634184Y2 JP S634184 Y2 JPS634184 Y2 JP S634184Y2 JP 178087 U JP178087 U JP 178087U JP 178087 U JP178087 U JP 178087U JP S634184 Y2 JPS634184 Y2 JP S634184Y2
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JP
Japan
Prior art keywords
output
focus
circuit
contrast
difference
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Expired
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JP178087U
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Japanese (ja)
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JPS62125224U (en
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Priority to JP178087U priority Critical patent/JPS634184Y2/ja
Publication of JPS62125224U publication Critical patent/JPS62125224U/ja
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  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Focusing (AREA)

Description

【考案の詳細な説明】 本考案は、電気的焦点検出指示装置を用い、前
ピン,後ピン,焦点合致を示すばかりか、現在の
撮影レンズの動く方向の正否をも含めて示す事が
出来るカメラの焦点検出指示装置に関するもので
ある。
[Detailed description of the invention] This invention uses an electrical focus detection and indicating device, and can not only indicate front focus, rear focus, and focus alignment, but also indicate whether the current direction of movement of the photographic lens is correct or incorrect. The present invention relates to a focus detection instruction device for a camera.

従来より、被写体像を2つに分け互いの被写体
像が焦点合致時には一致するいわゆる像合致の原
理を利用した方法や、フイルム面と光学的に等価
な位置を挾んで前後に光電変換素子を配して前ピ
ン,後ピン,焦点合致状態を検出する装置は数多
く考えられてきた。焦点検出機構も、モーター等
で撮影レンズを動かし焦点合致位置で止めて焦点
検出を行う自動焦点検出装置の他に、最近では、
モーター等を用いずに手で撮影レンズを動かし、
その焦点検出状態を電気的に表示する焦点検出指
示装置が考えられてきた。この後者の装置は前者
に比べ、モーター等の駆動回路が必要ないため、
装置全体が小型,軽量,簡単になるばかりか、焦
点検出が撮影者の意志にまかされるため、自動焦
点検出装置で見られた機械一辺倒の弊害が取り除
かれて、撮影の自由度の大きい本来のカメラの姿
にもどる事が出来、又光学的な焦点検出法に比
べ、アナログあるいはデジタルとしての量で示さ
れるため数段焦点検出が簡単になるが、撮影レン
ズの動きと焦点合致位置との相関がわからないた
め、撮影者は焦点合致外ではどの様に撮影レンズ
を動かしてよいかわからず非常に不便であつた。
Conventionally, there have been methods that utilize the principle of so-called image matching, in which the subject image is divided into two parts and the two subject images match when they are in focus, or that photoelectric conversion elements are placed in front and behind each other at positions optically equivalent to the film surface. Many devices have been devised to detect front focus, back focus, and in-focus states. In recent years, focus detection mechanisms include automatic focus detection devices that detect focus by moving the photographic lens using a motor or the like and stopping it at the focused position.
Move the photographic lens by hand without using a motor, etc.
Focus detection indicating devices that electrically display the focus detection state have been devised. Compared to the former, this latter device does not require a drive circuit such as a motor, so
Not only is the entire device smaller, lighter, and simpler, but focus detection is left to the photographer's will, which eliminates the drawbacks of relying entirely on machines that were seen with automatic focus detection devices, allowing for greater freedom in shooting. It is possible to return to the appearance of a camera, and compared to optical focus detection methods, focus detection is made several steps easier because it is indicated by an analog or digital quantity, but the correlation between the movement of the photographic lens and the focus position is This was very inconvenient for the photographer because he did not know how to move the photographic lens when the lens was out of focus.

本考案は、この様な不便を補うため、撮影者が
正しく撮影レンズを動かしているかの判定表示を
し、加えて前ピン,後ピンをも表示出来る全く理
想的なカメラの焦点検出指示装置を提供するもの
である。
In order to compensate for these inconveniences, the present invention has developed a completely ideal camera focus detection and instruction device that can determine whether the photographer is moving the photographic lens correctly and can also display the front focus and rear focus. This is what we provide.

以下本考案の実施例を図に従つて説明する。 Embodiments of the present invention will be described below with reference to the drawings.

第1図は本考案に適した電気的焦点検出装置を
具備した一眼レフカメラの構成図である。被写体
からの光は、撮影レンズ1を通り、全反射ミラー
2により反射してコンデンサーレンズ3の下部の
焦点面に結像し、その状態をペンタプリズム4,
アイピース5を通し眼6で光学的に見る。と同時
に全反射ミラー8及びハーフミラー9を通しフイ
ルム面7と光学的に等価な位置から等しい微少距
離だけ前後して設けられた光電変換素子群10,
11に投影される。光電変換素子群の各素子は受
光面その他光電的に等しい性質を持ち連なつてお
り、光電変換素子群10各素子をd1,d2……do
光電変換素子群11の各素子をD1,D2……Do
し、各素子の入射光に対応して出力をi1,i2……
io,I1,I2……Ioとして、焦点検出処理回路12に
於いてF1o-1m=1 |in−in+1|,F2o-1m=1 |In−In+1
|,F3=F1−F2の演算を行う。尚、nは光電変
換素子の数とする。このF1,F2の値は光電変換
素子群10,11に対する被写体像のコントラス
トの変化を演算しているのに他ならず、各々の光
電変換素子群上に投影される被写体像のコントラ
ストが一番大きい時、最大値を得る。又、光電変
換素子群は焦点合致点を挾んで光学的に等しい距
離に置かれているので、演算出力F1,F2が等し
くなつた点即ちF1=F2の時が焦点合致点a0とな
る。この点を求める出力がF3である。第2図,
第3図に演算出力F1,F2,F3の変化を示す。焦
点検出処理回路12の出力としてF1,F2,F3
得て、本考案による焦点検出指示回路13に入力
し、処理後焦点状態を指示する。尚、焦点検出指
示回路13の詳細は第4図に示す。
FIG. 1 is a block diagram of a single-lens reflex camera equipped with an electric focus detection device suitable for the present invention. Light from the subject passes through the photographic lens 1, is reflected by the total reflection mirror 2, and forms an image on the focal plane below the condenser lens 3.
View optically with eye 6 through eyepiece 5. At the same time, a group of photoelectric conversion elements 10 are provided through a total reflection mirror 8 and a half mirror 9, and are arranged at equal minute distances from a position optically equivalent to the film surface 7.
11. Each element of the photoelectric conversion element group has a light-receiving surface and other photoelectric properties that are the same and are connected, and each element of the photoelectric conversion element group 10 is referred to as d 1 , d 2 . . . d o ,
Let each element of the photoelectric conversion element group 11 be D 1 , D 2 ...D o , and output i 1 , i 2 ... corresponding to the incident light of each element.
i o , I 1 , I 2 ... As I o , in the focus detection processing circuit 12, F 1 = o-1m=1 | i n −i n+1 |, F 2 = o-1m =1 |I n −I n+1
|, F 3 =F 1 −F 2 is calculated. Note that n is the number of photoelectric conversion elements. These values of F 1 and F 2 are nothing but calculations of changes in the contrast of the subject image with respect to the photoelectric conversion element groups 10 and 11, and the contrast of the subject image projected onto each photoelectric conversion element group is When it is the largest, you get the maximum value. Furthermore, since the photoelectric conversion element groups are placed at optically equal distances from each other across the focal point, the focal point a is the point where the calculation outputs F 1 and F 2 are equal, that is, when F 1 = F 2 . It becomes 0 . The output for finding this point is F3 . Figure 2,
Figure 3 shows changes in the calculation outputs F 1 , F 2 , and F 3 . F 1 , F 2 , and F 3 are obtained as outputs of the focus detection processing circuit 12 and inputted to the focus detection instruction circuit 13 according to the present invention, which instructs the focus state after processing. The details of the focus detection instruction circuit 13 are shown in FIG.

第2図は前述した演算出力F1,F2の撮影レン
ズ1の繰り出し量lに対する変化である。即ち、
光電変換素子群10上に投影された被写体像は、
フイルム面7に対して遠い位置でコントラストが
最大となり演算出力F1が最大となる点が生じ、
その前後では減少する。又、光電変換素子群11
では、フイルム面7に対して近い位置でコントラ
ストが最大となり演算出力F2が最大となり、そ
の前後で減少し、焦点合致点a0は演算出力F1
F2の最大値を示す位置の中間、即ちF1=F2の点
となる事を示す図である。尚、光電変換素子群1
0と11の位置関係は、フイルム面7と光学的に
等しい位置に対し、遠い方を光電変換素子群10
とし、第2図の左端を遠点とし右端を近点とす
る。
FIG. 2 shows the changes in the above-mentioned calculation outputs F 1 and F 2 with respect to the extension amount l of the photographic lens 1. That is,
The subject image projected onto the photoelectric conversion element group 10 is
There is a point where the contrast is maximum and the calculation output F 1 is maximum at a position far from the film surface 7,
It decreases before and after that. Moreover, the photoelectric conversion element group 11
In this case, the contrast is maximum at a position close to the film surface 7, and the calculation output F 2 is maximum, and decreases before and after that, and the focal point a 0 is the calculation output F 1 .
FIG. 6 is a diagram showing that the point is in the middle of the position showing the maximum value of F 2 , that is, the point where F 1 =F 2 . In addition, photoelectric conversion element group 1
The positional relationship between 0 and 11 is such that with respect to a position optically equal to the film surface 7, the far side is located at the photoelectric conversion element group 10.
The left end of FIG. 2 is the far point, and the right end is the near point.

第3図は他の演算出力F3の変化で、横軸は第
2図と同じであるが、縦軸の出力ε0の符号は正負
両方を取る。即ち、焦点合致点a0(F3=0)を境
に、左側(F1>F2)では正に、右側(F1<F2
では負になる事を示し、この出力F3より前ピン,
後ピン,焦点合致の判定が可能となる。尚、ε1
ε2は焦点合致範囲設定出力で、この範囲で焦点合
致信号が出力されることとなる。
FIG. 3 shows changes in another calculation output F 3 , and the horizontal axis is the same as in FIG. 2, but the sign of the output ε 0 on the vertical axis is both positive and negative. In other words, from the focal point a 0 (F 3 = 0), the left side (F 1 > F 2 ) is exactly right, and the right side (F 1 < F 2 )
shows that it becomes negative, and the pin before this output F 3 ,
It becomes possible to determine whether the rear focus is in focus or whether the focus is in focus. Furthermore, ε 1 ,
ε 2 is a focus range setting output, and a focus match signal is output within this range.

第4図に前記演算出力F1,F2,F3を用いて撮
影レンズ1の繰り出し方向が正しいか否かを判定
する機能をも含んだ本考案による焦点検出指示装
置の回路の一例を示す。F1,F2,F3は前述した
演算出力である。
FIG. 4 shows an example of the circuit of the focus detection instruction device according to the present invention, which also includes a function of determining whether or not the direction of extension of the photographic lens 1 is correct using the calculation outputs F 1 , F 2 , and F 3. . F 1 , F 2 , and F 3 are the aforementioned calculation outputs.

第3図の焦点合致範囲設定出力ε1,ε2に対する
撮影レンズ1の繰り出し量lの範囲の左側及び内
側及び右側について各演算出力F1,F2,F3につ
いて考察すると、 左側ではF3>ε1>0(正),F2は焦点合致点に向
い増加 内側ではε1≧F3≧ε2 右側ではF3<ε2<0(負),F1は焦点合致点に向
い増加 即ち、演算出力F3の符号及び焦点合致範囲設
定出力ε1,ε2により、前ピン,焦点合致,後ピン
の判定を行い、演算出力F3と演算出力F1,F2
増加の方向により撮影レンズが正しい方向に動い
ているかを判定するのである。演算出力F3>ε1
場合は、コンパレーター14の出力はHに、コン
パレーター15の出力はLになるため、インバー
ター16の出力もLとなり、NOR回路20の出
力のみがHとなり、LED等の表示素子31は抵
抗rで制御されて点灯する。この表示が後ピンを
示す。この時NOR回路19の出力はLであるが、
インバーター18により半導体スイツチ22,2
3はシヨート状態となる。又前述した様にNOR
回路20の出力はHなので、半導体スイツチ24
もシヨート状態となり、コンパレーター26の
(+)入力端子には演算出力F2が入力される。コ
ンパレーター26及びダイオード27及びコンデ
ンサーCは公知のピーク検出回路を構成してお
り、コンパレーター26の(+)入力端子が増加
状態あるいは一定状態の場合はその出力は(+)
入力端子の値に比例し、減少状態になつた途端に
出力は接地電位より低い電位即ちLとなる。よつ
て今、撮影レンズ1を焦点合致位置a0に向つて動
かした場合は、演算出力F2増加の状態にあるた
め、LED等の発光素子29はコンパレーター2
8の出力が接地電位以下のため点灯しない。逆に
動いた場合は、演算出力F2は減少状態となるた
め、コンパレーター26の出力は接地以下の電位
となり、コンパレーター28の出力は正の出力H
となるため抵抗rを通してLED等の発光素子2
9は一瞬点灯する。このLED等の発光素子29
の点灯が、撮影レンズの動きが正しいか否かを判
定する。又、演算出力F3がε1≧F3≧ε2の場合、即
ち焦点合致状態では、コンパレーター14,15
の出力共LとなるためNOR回路19の出力のみ
がHとなり、LED等の発光素子32が点灯する。
反面、インバーター18により半導体スイツチ2
2,23はオープン状態となるため、撮影レンズ
1の動きに開係なくLED等の発光素子29は点
灯しない。
Considering each calculation output F 1 , F 2 , F 3 on the left, inside, and right side of the range of the extension amount l of the photographing lens 1 with respect to the focusing range setting outputs ε 1 and ε 2 in FIG. 3 , on the left side, F 3 >ε 1 >0 (positive), F 2 increases toward the focal point On the inside, ε 1 ≧F 3 ≧ε 2 On the right side, F 32 <0 (negative), F 1 increases toward the focal point That is, front focus, focus matching, and back focus are determined based on the sign of the calculation output F 3 and the focus matching range setting outputs ε 1 and ε 2 , and the direction of increase of the calculation output F 3 and the calculation outputs F 1 and F 2 is determined. This determines whether the photographic lens is moving in the correct direction. When the calculation output F 3 > ε 1 , the output of the comparator 14 becomes H and the output of the comparator 15 becomes L, so the output of the inverter 16 also becomes L, and only the output of the NOR circuit 20 becomes H, and the LED The display elements 31 such as the above are controlled by a resistor r and are turned on. This display indicates the back pin. At this time, the output of the NOR circuit 19 is L, but
The inverter 18 switches the semiconductor switches 22, 2
3 is in a shot state. Also, as mentioned above, NOR
Since the output of the circuit 20 is H, the semiconductor switch 24
is also in the short state, and the calculation output F 2 is input to the (+) input terminal of the comparator 26. The comparator 26, the diode 27, and the capacitor C constitute a known peak detection circuit, and when the (+) input terminal of the comparator 26 is in an increasing state or a constant state, its output is (+).
It is proportional to the value at the input terminal, and as soon as it enters a decreasing state, the output becomes a potential lower than the ground potential, that is, L. Therefore, if the photographing lens 1 is now moved toward the focal point a 0 , the calculation output F 2 is increasing, so the light emitting element 29 such as an LED is switched to the comparator 2.
Since the output of 8 is below ground potential, it does not light up. If it moves in the opposite direction, the calculation output F 2 will be in a decreasing state, so the output of the comparator 26 will be at a potential below ground, and the output of the comparator 28 will be a positive output H.
Therefore, the light emitting element 2 such as an LED is connected through the resistor r.
9 lights up momentarily. Light emitting element 29 such as this LED
Lighting determines whether the movement of the photographic lens is correct. Moreover, when the calculation output F 3 is ε 1 ≧F 3 ≧ε 2 , that is, in the focused state, the comparators 14 and 15
Since both the outputs of the NOR circuit 19 become L, only the output of the NOR circuit 19 becomes H, and the light emitting element 32 such as an LED lights up.
On the other hand, the semiconductor switch 2 is activated by the inverter 18.
2 and 23 are in an open state, the light emitting element 29 such as an LED does not light up regardless of the movement of the photographic lens 1.

次に演算出力F3がF3<ε2の場合を考えてみる
と、コンパレーター14の出力はLに、コンパレ
ーター15の出力はHとなるため、インバーター
17を介してNOR回路21の出力のみがHとな
り、LED等の発光素子30が点灯すると共に、
半導体スイツチ25がシヨート状態になり、又イ
ンバーター18の働きにより半導体スイツチ2
2,23もシヨート状態となるため、コンパレー
ター26の(+)端子には演算出力F1が入力さ
れて、前述した様な変化によりLED等の発光素
子29が点灯,消灯し、撮影レンズの動きを判定
する。尚、文中のHは正の電源電位、Lは負の電
源電位を示す。又半導体スイツチは、(〓)
端子がHの時、〜端子間がシヨート状態と
なる。第5図にフアインダー33内の表示法の一
例を図示した。即ち、焦点合致範囲ではLED等
の発光素子32が、後ピン状態では31が、前ピ
ン状態では30が点灯し、各々の状態で撮影レン
ズを焦点合致方向と逆方向に移動させると表示素
子29が点灯するのである。
Next, considering the case where the calculation output F 3 is F 32 , the output of the comparator 14 is L and the output of the comparator 15 is H, so the output of the NOR circuit 21 is only becomes H, the light emitting element 30 such as an LED lights up, and
The semiconductor switch 25 enters the short state, and due to the action of the inverter 18, the semiconductor switch 2
2 and 23 are also in the shot state, the calculation output F 1 is input to the (+) terminal of the comparator 26, and the light emitting element 29 such as an LED is turned on and off due to the changes described above, and the photographing lens is Determine movement. Note that H in the text indicates a positive power supply potential, and L indicates a negative power supply potential. Also, the semiconductor switch is (〓)
When the terminal is at H, the short state occurs between the ~ terminals. FIG. 5 shows an example of the display method within the finder 33. That is, a light emitting element 32 such as an LED lights up in the in-focus range, 31 lights up in the rear focus state, and 30 lights up in the front focus state, and when the photographing lens is moved in the opposite direction to the focus direction in each state, the display element 29 lights up. is lit.

以上述べた様に、本考案による焦点検出指示装
置は、現在の焦点合致状態,前ピン,焦点合致,
後ピンばかりか、撮影レンズの動きの正しさまで
を撮影者にわからせる全く理想的な焦点検出指示
装置を得ることが出来る。もちろん、これらの演
算出力F1,F2,F3を用いて自動焦点検出装置が
構成される事は言うまでもなく、又LED等の発
光素子で表示するばかりでなく、液晶,音の変化
を利用してもよい。
As described above, the focus detection instruction device according to the present invention can detect the current focus state, front focus, focus match,
It is possible to obtain a completely ideal focus detection and instruction device that allows the photographer to understand not only the rear focus but also the correctness of the movement of the photographic lens. Of course, it goes without saying that an automatic focus detection device can be constructed using these calculation outputs F 1 , F 2 , and F 3 , and in addition to displaying with light emitting elements such as LEDs, liquid crystals and changes in sound can also be used. You may.

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

第1図は本考案に適した電気的焦点検出装置を
具備した一眼レフカメラの構成図である。第2図
は各焦点検出出力の撮影レンズの繰り出し量に対
する変化図である。第3図は第2図における各焦
点検出出力差出力F1−F2(=F3)の変化図であ
る。第4図は本考案による焦点検出指示回路の一
実施例である。第5図はフアインダー内に焦点指
示器及び動作方向判定指示器を構成した一例であ
る。 1……撮影レンズ、2……全反射ミラー、2′
……ハーフミラー、3……コンデンサーレンズ、
4……ペンタプリズム、5……アイピース、6…
…眼、7……フイルム面、8……全反射ミラー、
9……ハーフミラー、10,11……光電変換素
子群、12……焦点検出処理回路、13……焦点
検出指示回路、14,15,26,28……コン
パレーター、16,17,18……インバータ
ー、19,20,21……NOR回路、22,2
3,24,25……半導体スイツチ、27……ダ
イオード、29,30,31,32……LED等
の表示素子、33……フアインダー、r……抵
抗、C……コンデンサー、F1,F2,F3……演算
出力、l……撮影レンズ1の繰り出し量、ε,ε0
……焦点検出出力、ε1,ε2……焦点合致範囲設定
出力、a0……焦点合致位置。
FIG. 1 is a block diagram of a single-lens reflex camera equipped with an electric focus detection device suitable for the present invention. FIG. 2 is a diagram showing how each focus detection output changes with respect to the amount of extension of the photographing lens. FIG. 3 is a diagram showing changes in each focus detection output difference output F 1 -F 2 (=F 3 ) in FIG. 2. FIG. 4 shows an embodiment of the focus detection instruction circuit according to the present invention. FIG. 5 is an example in which a focus indicator and a movement direction determination indicator are configured within the viewfinder. 1...Photographing lens, 2...Total reflection mirror, 2'
...Half mirror, 3...Condenser lens,
4... Pentaprism, 5... Eyepiece, 6...
...Eye, 7...Film surface, 8...Total reflection mirror,
9... Half mirror, 10, 11... Photoelectric conversion element group, 12... Focus detection processing circuit, 13... Focus detection instruction circuit, 14, 15, 26, 28... Comparator, 16, 17, 18... ...Inverter, 19,20,21...NOR circuit, 22,2
3, 24, 25... Semiconductor switch, 27... Diode, 29, 30, 31, 32... Display element such as LED, 33... Finder, r... Resistor, C... Capacitor, F 1 , F 2 , F 3 ... Computation output, l ... Extension amount of photographing lens 1, ε, ε 0
... Focus detection output, ε 1 , ε 2 ... Focus matching range setting output, a 0 ... Focus matching position.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] フイルム面に光学的に等価な位置に前後して2
つの光電変換素子群を配した電気的焦点検出装置
を有するカメラに於て、前記2つの光電変換素子
群の各素子の入射光に対応する各出力i1,i2,…
…,io及びI1,I2,……,Ioに基づいて、被写体像
のコントラスト出力F1,F2を検出するコントラ
スト検出回路と、このコントラスト検出回路が検
出したコントラスト出力F1,F2に基づいて、両
者の差F3を演算する差演算回路と、この差演算
回路が演算した差出力F3と予め設定した焦点合
致範囲値ε1,ε2とに基づいて、F3>ε1>0で後ピ
ンを、ε1≦F3≦ε2で焦点合致を、F3<ε2<0で前
ピンを夫々判定する第1の判定回路と、前記差演
算回路が演算した差出力F3がF3>ε1の時に前記コ
ントラスト出力F2を、F3<ε2の時に前記コントラ
スト出力F1を夫々選択する選択回路と、この選
択回路が選択したコントラスト出力F1又はF2
増減状態に基づいて、撮影レンズが焦点合致位置
に正しく向つて動いているか否かを判定する第2
の判定回路と、前記第1,第2の判定回路の判定
結果を表示する表示回路とを設けたことを特徴と
するカメラの焦点検出指示装置。
2 at a position optically equivalent to the film surface
In a camera having an electrical focus detection device having two photoelectric conversion element groups, each output i 1 , i 2 , . . . corresponds to the incident light of each element of the two photoelectric conversion element groups.
..., i o and I 1 , I 2 , ..., I o , a contrast detection circuit detects contrast outputs F 1 , F 2 of the subject image, and contrast outputs F 1 , F 2 detected by this contrast detection circuit. A difference calculation circuit calculates the difference F 3 between the two based on F 2 , and a difference output F 3 calculated by this difference calculation circuit and the preset focusing range values ε 1 and ε 2 . A first determination circuit that determines rear focus when >ε 1 >0, focus matching when ε 1 ≦F 3 ≦ε 2 , and front focus when F 32 <0, and the difference calculation circuit perform calculations. a selection circuit that selects the contrast output F 2 when the difference output F 3 is F 3 > ε 1 and selects the contrast output F 1 when F 3 < ε 2 ; and a selection circuit that selects the contrast output F 1 when the difference output F 3 is F 3 > ε 1 ; Or, based on the increase/decrease state of F2 , the second one determines whether the photographing lens is moving correctly toward the in-focus position.
A focus detection instruction device for a camera, comprising: a determination circuit; and a display circuit that displays the determination results of the first and second determination circuits.
JP178087U 1987-01-09 1987-01-09 Expired JPS634184Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP178087U JPS634184Y2 (en) 1987-01-09 1987-01-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP178087U JPS634184Y2 (en) 1987-01-09 1987-01-09

Publications (2)

Publication Number Publication Date
JPS62125224U JPS62125224U (en) 1987-08-08
JPS634184Y2 true JPS634184Y2 (en) 1988-02-02

Family

ID=30780004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP178087U Expired JPS634184Y2 (en) 1987-01-09 1987-01-09

Country Status (1)

Country Link
JP (1) JPS634184Y2 (en)

Also Published As

Publication number Publication date
JPS62125224U (en) 1987-08-08

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