JPS60125608U - auto focus device - Google Patents
auto focus deviceInfo
- Publication number
- JPS60125608U JPS60125608U JP1175884U JP1175884U JPS60125608U JP S60125608 U JPS60125608 U JP S60125608U JP 1175884 U JP1175884 U JP 1175884U JP 1175884 U JP1175884 U JP 1175884U JP S60125608 U JPS60125608 U JP S60125608U
- Authority
- JP
- Japan
- Prior art keywords
- subject
- filter
- low
- autofocus
- glass plate
- 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
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案に係るオートフォーカス装置の一実施例を
示すものであり、第１図はその光学的配置図、第２図ａ
は受光素子及びフィルタの正面図、ｂは側面図である。
符号１は撮影光学系、２は発光素子、３は投光レンズ、
４は受光レンズ、５はフィルタ、５ａは高濃度フィルタ
、５ｂは低濃度フィルタ、６，７ ”は受光素子、
８はカム手段、９はピンである。The drawings show an embodiment of an autofocus device according to the present invention, and FIG. 1 shows its optical layout, and FIG.
is a front view of the light receiving element and the filter, and b is a side view. 1 is a photographing optical system, 2 is a light emitting element, 3 is a light projecting lens,
4 is a light receiving lens, 5 is a filter, 5a is a high density filter, 5b is a low density filter, 6 and 7'' are light receiving elements,
8 is a cam means, and 9 is a pin.
Claims (1)
の反射光を受光素子で受光して被写体距離を検出する能
動型のオートフォーカス装置において、受光素子前に配
置した複数の光学的透過度の異なるフィルタを被写体距
離に対応して切換可能な構成としたことを特徴とするオ
ートフォーカス装置。 ２ 前記フィルタは被写体距離が遠距離の場合は高透過
度のフィルタを使用し、近距離の場合は低透過度のフィ
ルタを使用するようにした実用新案登録請求の範囲第１
項に記載のオートフォーカス装置。 ３ 前記高透過度のフィルタは低濃度で肉厚の大きいガ
ラス板とし、低透過度のフィルタは高濃度で肉厚の小さ
いガラス板とした実用新案登録請求の範囲第２項に記載
のオートフォーカス装置。[Scope of Claim for Utility Model Registration] 1. In an active autofocus device that emits infrared light from the camera side to a subject and detects the distance to the subject by receiving reflected light from the subject with a light receiving element, An autofocus device characterized by having a configuration in which a plurality of filters having different optical transmittances arranged in the camera can be switched according to the subject distance. 2. Utility model registration claim 1, in which the filter uses a filter with high transparency when the subject is far away, and a filter with low transparency when the subject is close.
Autofocus device as described in section. 3. The autofocus according to claim 2, wherein the high-transmittance filter is a glass plate with a low concentration and a large thickness, and the low-transmittance filter is a glass plate with a high concentration and a small thickness. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1175884U JPS60125608U (en) | 1984-01-31 | 1984-01-31 | auto focus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1175884U JPS60125608U (en) | 1984-01-31 | 1984-01-31 | auto focus device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60125608U true JPS60125608U (en) | 1985-08-24 |
Family
ID=30494175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1175884U Pending JPS60125608U (en) | 1984-01-31 | 1984-01-31 | auto focus device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60125608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63266436A (en) * | 1987-04-24 | 1988-11-02 | Nikon Corp | Camera with filter for selecting focus detecting light beam |
-
1984
- 1984-01-31 JP JP1175884U patent/JPS60125608U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63266436A (en) * | 1987-04-24 | 1988-11-02 | Nikon Corp | Camera with filter for selecting focus detecting light beam |
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