JPS597415U - Focus detection device - Google Patents
Focus detection deviceInfo
- Publication number
- JPS597415U JPS597415U JP10170982U JP10170982U JPS597415U JP S597415 U JPS597415 U JP S597415U JP 10170982 U JP10170982 U JP 10170982U JP 10170982 U JP10170982 U JP 10170982U JP S597415 U JPS597415 U JP S597415U
- Authority
- JP
- Japan
- Prior art keywords
- light
- photoelectric conversion
- conversion element
- detection device
- focus detection
- 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
Landscapes
- Focusing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の合焦検出の原理を示す説明図、第２図
は本考案で使用する光位置検出器の一例を示す概略断面
図、第３図は光＆置検出器に入射する像の光量分布の一
例を示す図、第４図は本考案による二次元合焦検出装置
の光学系を示す斜視図、第５図は第４図の合焦検出装置
のブロック図、第６図は合焦検出装置により処理された
信号波形を示す図である。
１．２２・・・・・・結像レンズ、２・・・・・・遮光
板、３・・・・・・像画、１０・・・・・・高低１ｉ基
板、１１・・・・・・ｐ型抵抗層、１２・・・・・・ｎ
十層、１３・・・・・・共通電極、１４゜１５・・・・
・・電極、２１・・・・・・瞳分割器、２３・・・・・
・光位置検出器、２４．２４’・・間アナログスイッチ
、２５．２５’・・・・・・アンプ、２６・・・・・・
減算器、２７・・・・・・加算器、２８・・・・・・除
算器、２９・・・・・・駆動回路、３０・・・・・・フ
ィルタ、３１・・・・・・コンパレータ、３２・・・・
・・制御回路。Figure 1 is an explanatory diagram showing the principle of focus detection of the present invention, Figure 2 is a schematic sectional view showing an example of the optical position detector used in the present invention, and Figure 3 is an illustration of the light incident on the optical & position detector. 4 is a perspective view showing the optical system of the two-dimensional focus detection device according to the present invention; FIG. 5 is a block diagram of the focus detection device shown in FIG. 4; FIG. 6 is a diagram showing an example of the light intensity distribution of an image. FIG. 2 is a diagram showing a signal waveform processed by the focus detection device. 1.22... Imaging lens, 2... Light shielding plate, 3... Image image, 10... Height 1i board, 11...・P-type resistance layer, 12...n
10 layers, 13... Common electrode, 14°15...
... Electrode, 21 ... Pupil divider, 23 ...
・Optical position detector, 24.24'...analog switch, 25.25'...amplifier, 26...
Subtractor, 27... Adder, 28... Divider, 29... Drive circuit, 30... Filter, 31... Comparator , 32...
...Control circuit.
Claims (1)
る物体像を正規の結像面またはその共役面に配設された
光電変換要素で受けて該物体像の相対的位置関係により
合焦を検出するようにした合焦検出装置において、結像
光学系の瞳位置またはその共役位置或いはその近傍に配
設されていて且つ一直線上にない少なくとも三個の順次
選択的に光透過状態になる透光部を有する遮光板と、前
記光電変換要素として備えられた二次元光電変換素子と
、前記透光部を結ぶ異なる二方向に関する該二次元光電
変換素子の二つの出力信号を前記透光部の透明化に同期
して切換えて一つの共通の処理回路に入力せしめる切換
装置とを含んでいることを特徴とする、合焦検出装置。Object images formed by light beams passing through different paths of the imaging optical system are received by a photoelectric conversion element disposed on the regular imaging plane or its conjugate plane, and the object images are focused based on the relative positional relationship of the imaging plane. In the focus detection device configured to detect the focus, at least three transparent lenses that are disposed at or near the pupil position of the imaging optical system or its conjugate position and that are not on a straight line are sequentially and selectively turned into a light transmitting state. A light-shielding plate having a light part, a two-dimensional photoelectric conversion element provided as the photoelectric conversion element, and two output signals of the two-dimensional photoelectric conversion element in two different directions connecting the light-transmitting part are detected in the light-transmitting part. What is claimed is: 1. A focus detection device comprising: a switching device that switches in synchronization with transparency and inputs the input to one common processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10170982U JPS597415U (en) | 1982-07-07 | 1982-07-07 | Focus detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10170982U JPS597415U (en) | 1982-07-07 | 1982-07-07 | Focus detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS597415U true JPS597415U (en) | 1984-01-18 |
| JPH0136162Y2 JPH0136162Y2 (en) | 1989-11-02 |
Family
ID=30240069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10170982U Granted JPS597415U (en) | 1982-07-07 | 1982-07-07 | Focus detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597415U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138924A (en) * | 1976-05-15 | 1977-11-19 | Konishiroku Photo Ind Co Ltd | Focal detector |
| JPS55106442A (en) * | 1979-02-09 | 1980-08-15 | Ricoh Co Ltd | Blur detector |
| JPS56101111A (en) * | 1980-01-14 | 1981-08-13 | Mamiya Koki Kk | Automatic focus adjustment method |
-
1982
- 1982-07-07 JP JP10170982U patent/JPS597415U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138924A (en) * | 1976-05-15 | 1977-11-19 | Konishiroku Photo Ind Co Ltd | Focal detector |
| JPS55106442A (en) * | 1979-02-09 | 1980-08-15 | Ricoh Co Ltd | Blur detector |
| JPS56101111A (en) * | 1980-01-14 | 1981-08-13 | Mamiya Koki Kk | Automatic focus adjustment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0136162Y2 (en) | 1989-11-02 |
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