JPS6378911U - - Google Patents
Info
- Publication number
- JPS6378911U JPS6378911U JP17238586U JP17238586U JPS6378911U JP S6378911 U JPS6378911 U JP S6378911U JP 17238586 U JP17238586 U JP 17238586U JP 17238586 U JP17238586 U JP 17238586U JP S6378911 U JPS6378911 U JP S6378911U
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving element
- detection device
- utility
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案による自動焦点検出装置の第１
実施例の光学系を示す図、第２図は上記第１実施
例の受光素子及びその表面での光スポツトの変化
を示す図、第３図及び第４図は夫々受光素子の変
形例及びその表面での光スポツトの変化を示す図
、第５図は受光素子に筒を取り付けた状態の断面
図、第６図は第２実施例の光学系を示す図、第７
図は上記第２実施例の受光素子及びその表面での
光スポツトの変化を示す図である。
１……撮影レンズ、２……ハーフミラー、３…
…発光素子、４……受光素子、５……フイルム面
、６……被写体、７……筒、８……投影レンズ、
９……結像レンズ。
Figure 1 shows the first automatic focus detection device according to the present invention.
FIG. 2 is a diagram showing the light-receiving element of the first embodiment and changes in the light spot on its surface, and FIGS. 3 and 4 are diagrams showing modified examples of the light-receiving element and their variations, respectively. Figure 5 is a cross-sectional view of the tube attached to the light receiving element; Figure 6 is a diagram showing the optical system of the second embodiment; Figure 7 is a diagram showing changes in the light spot on the surface;
The figure shows the light receiving element of the second embodiment and changes in light spots on its surface. 1...Photographing lens, 2...Half mirror, 3...
...Light emitting element, 4... Light receiving element, 5... Film surface, 6... Subject, 7... Tube, 8... Projection lens,
9...Imaging lens.
Claims (1)
置された受光素子とを有すると共に、該受光素子
における入射光軸近傍を不感部に構成し、前記受
光素子の出力がほぼ零の場合合焦と判定するよう
にした自動焦点検出装置。 (2) 受光素子の不感部に筒を設けたことを特徴
とする実用新案登録請求の範囲(1)に記載の自動
焦点検出装置。[Claims for Utility Model Registration] (1) It has a light-emitting element and a light-receiving element disposed on the image formation plane of the imaging lens, and the vicinity of the incident optical axis of the light-receiving element is configured as a blind part, An automatic focus detection device that determines focus when the output of the light receiving element is almost zero. (2) The automatic focus detection device according to claim (1) of the utility model registration, characterized in that a cylinder is provided in the insensitive part of the light receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17238586U JPS6378911U (en) | 1986-11-10 | 1986-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17238586U JPS6378911U (en) | 1986-11-10 | 1986-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6378911U true JPS6378911U (en) | 1988-05-25 |
Family
ID=31108877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17238586U Pending JPS6378911U (en) | 1986-11-10 | 1986-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6378911U (en) |
-
1986
- 1986-11-10 JP JP17238586U patent/JPS6378911U/ja active Pending
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