JPS58109725U - Optical system for autofocus - Google Patents
Optical system for autofocusInfo
- Publication number
- JPS58109725U JPS58109725U JP581282U JP581282U JPS58109725U JP S58109725 U JPS58109725 U JP S58109725U JP 581282 U JP581282 U JP 581282U JP 581282 U JP581282 U JP 581282U JP S58109725 U JPS58109725 U JP S58109725U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- light
- autofocus
- subject
- refractive power
- 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
Landscapes
- Focusing (AREA)
- Viewfinders (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図は従来のファインダー光学系とオートフォーカ
ス用光学系の概略図、第２図から第４図は本考案の各実
施例の光学系の概略図である。
図中１は対物レンズ、２は接眼レンズ、３は光源、４は
投光用レンズ、５は受光用レンズ、６は ゛゛受光器
、７１，７□は屈折面、８□、８２は反射面、Ｓは被写
体である。□ Fig. 1 is a schematic diagram of a conventional finder optical system and an autofocus optical system, and Figs. 2 to 4 are schematic diagrams of optical systems of each embodiment of the present invention. In the figure, 1 is an objective lens, 2 is an eyepiece lens, 3 is a light source, 4 is a projection lens, 5 is a light receiving lens, 6 is a receiver, 71, 7□ are refractive surfaces, 8□, 82 are reflective surfaces , S is the subject.
Claims (3)
る被写体からの反射光を受光する為の受光器を有するア
クティブタイプのオートフォーカス機能を有するカメラ
において、前記ファインダー光学系の対物レンズの一部
を利用して前記投光用の光源から射出する光束を被写体
側に投光すると共に、被写体からの反射光を前記受光器
に導光する事を特徴とするオートフォーカス用光学系。(1) In a camera with an active type autofocus function that has a finder optical system, a light source for projecting light, and a light receiver for receiving light reflected from the subject by the light source, one of the objective lenses of the finder optical system is An autofocus optical system characterized in that the light beam emitted from the projecting light source is projected toward a subject using a part, and the reflected light from the subject is guided to the light receiver.
あ屈折力を付加した位置を利用した事を特徴とする実用
新案登録請求の範囲第１項記載のオートフォーカス用光
学系。(2) The autofocus optical system according to claim 1, which is a utility model registration, characterized in that a refractive power is added to a part of the objective lens, and the position where the refractive power is added is utilized.
実用新案登録請求の範囲第２項記載のオートフォーカス
用光学系。(3) The autofocus optical system according to claim 2, wherein the refractive power has a convergence effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP581282U JPS58109725U (en) | 1982-01-20 | 1982-01-20 | Optical system for autofocus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP581282U JPS58109725U (en) | 1982-01-20 | 1982-01-20 | Optical system for autofocus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58109725U true JPS58109725U (en) | 1983-07-26 |
Family
ID=30018606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP581282U Pending JPS58109725U (en) | 1982-01-20 | 1982-01-20 | Optical system for autofocus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58109725U (en) |
-
1982
- 1982-01-20 JP JP581282U patent/JPS58109725U/en active Pending
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