JPS62120717U - - Google Patents
Info
- Publication number
- JPS62120717U JPS62120717U JP18775886U JP18775886U JPS62120717U JP S62120717 U JPS62120717 U JP S62120717U JP 18775886 U JP18775886 U JP 18775886U JP 18775886 U JP18775886 U JP 18775886U JP S62120717 U JPS62120717 U JP S62120717U
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving element
- detection device
- pair
- model registration
- 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
- 238000003491 array Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 3
- 230000003287 optical effect Effects 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Focusing (AREA)
Description
第１図はデイフオーカス量と像の高周波成分の
量との関係を示すグラフであり、デイフオーカス
量Ｏ（合焦を示す直線）より離れるに従つてデイ
フオーカス量が増し高周波成分が減少する事を示
す。第２図は受光素子列の図で、この例では５個
の受光素子が直線上に並んでいる。第３図はフイ
ルム面をはさんで２列のセンサーが並んでいる状
態を示す。第４図は本考案装置を入れた一眼レフ
カメラの実施例を示す構成図である。第５図は第
４図の構成により得られるコントラスト出力の焦
点整合位置とデイフオーカス状態での変化を示す
図。第６図は処理回路の一例である。第７図は２
つの信号の差の絶対値を得る回路の一例。第８図
は積分回路の一例。第９図はＩＣのフラツトパツ
ケージの形にまとめた本考案装置の実施例を示す
斜視図。第１０図はハーフミラー１６、ミラー１
７の構成と受光素子の配置を示す図で、２７は迷
光を除く為の遮光板を示す。第１１図はハーフミ
ラー１６、ミラー１７、ガラスブロツク１３，１
４，１５と受光素子列３，５とその基板の配置を
示す斜視図。
FIG. 1 is a graph showing the relationship between the amount of defocus and the amount of high frequency components of an image, and shows that the amount of defocus increases as the distance from the defocus amount O (straight line indicating focus) increases and the high frequency components decrease. FIG. 2 is a diagram of a light-receiving element array, and in this example, five light-receiving elements are lined up in a straight line. Figure 3 shows two rows of sensors lined up with the film surface in between. FIG. 4 is a block diagram showing an embodiment of a single-lens reflex camera incorporating the device of the present invention. FIG. 5 is a diagram showing changes in the contrast output obtained by the configuration shown in FIG. 4 depending on the focusing position and the defocus state. FIG. 6 is an example of a processing circuit. Figure 7 is 2
An example of a circuit that obtains the absolute value of the difference between two signals. Figure 8 is an example of an integrating circuit. FIG. 9 is a perspective view showing an embodiment of the device of the present invention in the form of an IC flat package. Figure 10 shows half mirror 16 and mirror 1.
7 is a diagram showing the configuration of numeral 7 and the arrangement of light receiving elements, and numeral 27 indicates a light shielding plate for removing stray light. Figure 11 shows a half mirror 16, a mirror 17, and a glass block 13,1.
4, 15, a perspective view showing the arrangement of light receiving element arrays 3, 5, and their substrates.
Claims (1)
反射するビームスプリツターと、該反射光を該透
過光と平行に導く反射面を含み該透過光と垂直な
面を有する光学平面板と、該平面板と平行な平面
上に設置され前記２光束による像を撮影レンズか
らの光学的距離を異にして受ける１対の受光素子
列と、該受光素子列に近接して設置された少くと
も１個の受光素子とを具備し、該受光素子の光電
変換出力により前記１対の受光素子列の光に対す
る感度を調整し、該１対の受光素子列上の該撮影
レンズによる像の合焦程度の差違により焦点整合
状態を判定する事を特徴とするカメラの焦点検出
装置。 ２ 実用新案登録請求の範囲第１項記載の装置に
おいて、上記受光素子列として１対の自己走査型
イメージセンサーを用いる事を特徴とするカメラ
の焦点検出装置。 ３ 実用新案登録請求の範囲第１項記載の装置に
おいて、上記光学平面板が該受光素子列及び受光
素子の保護カバーを兼ねる事を特徴とするカメラ
の焦点検出装置。[Claims for Utility Model Registration] 1. A beam splitter that transmits a part of the luminous flux of a photographic lens and reflects the other part, and a reflecting surface that guides the reflected light in parallel with the transmitted light. an optical flat plate having a perpendicular surface; a pair of light receiving element arrays that are installed on a plane parallel to the flat plate and receive images of the two light beams at different optical distances from a photographing lens; and the light receiving elements. at least one light-receiving element installed close to the array, the sensitivity of the pair of light-receiving element arrays to light is adjusted by the photoelectric conversion output of the light-receiving element; A focus detection device for a camera, characterized in that a focus matching state is determined based on a difference in the degree of focus of an image by the above-mentioned photographing lens. 2 Utility Model Registration A focus detection device for a camera according to claim 1, characterized in that a pair of self-scanning image sensors is used as the light-receiving element array. 3. Utility model registration Claim 1: The focus detection device for a camera, wherein the optical plane plate also serves as a protective cover for the light-receiving element array and the light-receiving elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18775886U JPS62120717U (en) | 1986-12-04 | 1986-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18775886U JPS62120717U (en) | 1986-12-04 | 1986-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62120717U true JPS62120717U (en) | 1987-07-31 |
Family
ID=31138517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18775886U Pending JPS62120717U (en) | 1986-12-04 | 1986-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62120717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08286104A (en) * | 1986-05-16 | 1996-11-01 | Minolta Co Ltd | Focus detector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52110032A (en) * | 1976-03-12 | 1977-09-14 | Canon Inc | Detector for focusing |
| JPS5350851A (en) * | 1976-10-20 | 1978-05-09 | Hitachi Ltd | Automatic focus control apparatus of microscope |
-
1986
- 1986-12-04 JP JP18775886U patent/JPS62120717U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52110032A (en) * | 1976-03-12 | 1977-09-14 | Canon Inc | Detector for focusing |
| JPS5350851A (en) * | 1976-10-20 | 1978-05-09 | Hitachi Ltd | Automatic focus control apparatus of microscope |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08286104A (en) * | 1986-05-16 | 1996-11-01 | Minolta Co Ltd | Focus detector |
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