JPS6338116U - - Google Patents
Info
- Publication number
- JPS6338116U JPS6338116U JP12060887U JP12060887U JPS6338116U JP S6338116 U JPS6338116 U JP S6338116U JP 12060887 U JP12060887 U JP 12060887U JP 12060887 U JP12060887 U JP 12060887U JP S6338116 U JPS6338116 U JP S6338116U
- Authority
- JP
- Japan
- Prior art keywords
- chart
- detection device
- regular pattern
- lens
- focus
- 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
- 238000003384 imaging method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
Description
第１図ａは本考案装置の原理説明図、同図ｂ及
びｃは夫々第１及び第２チヤートのパターンの一
例を示す図、同図ｄはモアレ像干渉縞の図、第２
図は投影により第２チヤートを構成した例の斜視
図、第３図は本考案装置を文献複写装置の合焦手
段として用いた例を説明する図、第４図はレンズ
メータの合焦手段として用いた例を説明する図。
１は光学機器、２は結像レンズ、３は接眼レン
ズ、６は第１チヤート、７は第２チヤート、９は
モアレ像干渉縞。
Figure 1a is a diagram explaining the principle of the device of the present invention, Figures b and c are diagrams showing examples of the patterns of the first and second charts, respectively, Figure 1d is a diagram of moiré image interference fringes,
The figure is a perspective view of an example in which the second chart is constructed by projection, Figure 3 is a diagram illustrating an example in which the device of the present invention is used as a focusing means of a document copying device, and Figure 4 is a diagram illustrating an example in which the device of the present invention is used as a focusing means of a lens meter. The figure explaining the example used. 1 is an optical device, 2 is an imaging lens, 3 is an eyepiece lens, 6 is a first chart, 7 is a second chart, and 9 is a moiré image interference fringe.
Claims (1)
ンズの前記被検対象位置に規則的パターンを有す
る第１チヤートを配置し、該第１チヤートに対す
る前記結像レンズの予定結像面に規則的パターン
を有する第２チヤートとを配置し、前記第１チヤ
ートと前記第２チヤートとに基づき発生するモア
レ縞の発生を検出する検出装置を具備し、前記結
像レンズの合焦状態を検出することを特徴とする
光学機器の合焦検出装置。 ２ 前記第１チヤートは規則的パターンの投影像
であることを特徴とする実用新案登録請求の範囲
第１項記載の光学機器の合焦検出装置。[Claims for Utility Model Registration] 1. A first chart having a regular pattern is disposed at the test object position of an imaging lens whose focus is to be adjusted with respect to the test object position, and the imaging with respect to the first chart is performed. a second chart having a regular pattern is disposed on a predetermined image forming surface of the lens, and a detection device for detecting the occurrence of moiré fringes based on the first chart and the second chart; A focus detection device for an optical instrument, characterized by detecting a focus state of a lens. 2. The focus detection device for an optical instrument according to claim 1, wherein the first chart is a projected image of a regular pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12060887U JPS6338116U (en) | 1987-08-06 | 1987-08-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12060887U JPS6338116U (en) | 1987-08-06 | 1987-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6338116U true JPS6338116U (en) | 1988-03-11 |
Family
ID=31009082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12060887U Pending JPS6338116U (en) | 1987-08-06 | 1987-08-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6338116U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH037639A (en) * | 1989-06-02 | 1991-01-14 | Nissan Motor Co Ltd | Harness protective device for steering column |
| JPH0367745A (en) * | 1989-08-05 | 1991-03-22 | Alps Electric Co Ltd | Cable protecting device of steering column |
-
1987
- 1987-08-06 JP JP12060887U patent/JPS6338116U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH037639A (en) * | 1989-06-02 | 1991-01-14 | Nissan Motor Co Ltd | Harness protective device for steering column |
| JPH0367745A (en) * | 1989-08-05 | 1991-03-22 | Alps Electric Co Ltd | Cable protecting device of steering column |
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