JPS6384109U - - Google Patents
Info
- Publication number
- JPS6384109U JPS6384109U JP17961686U JP17961686U JPS6384109U JP S6384109 U JPS6384109 U JP S6384109U JP 17961686 U JP17961686 U JP 17961686U JP 17961686 U JP17961686 U JP 17961686U JP S6384109 U JPS6384109 U JP S6384109U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- focal length
- object side
- meniscus lens
- aperture
- 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
- 230000005499 meniscus Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Lenses (AREA)
- Lens Barrels (AREA)
Description
第１図は絞り直前にメニスカスレンズを配置し
た図である。第２図はメニスカスレンズの前に、
コンバータを装置した図である。第３図はカメラ
にメニスカスレンズ及びコンバータを内蔵させた
図である。
１……メニスカスレンズ、２……絞り、３……
マスターレンズ。
FIG. 1 shows a meniscus lens placed just before the aperture. Figure 2 shows the front of the meniscus lens.
FIG. 2 is a diagram illustrating a converter. FIG. 3 is a diagram showing a camera with a built-in meniscus lens and a converter. 1...Meniscus lens, 2...Aperture, 3...
master lens.
Claims (1)
スレンズと絞りと正の屈折力を有するレンズ群と
から成り、前記メニスカスレンズの焦点距離をｆ
１、全系の焦点距離をｆとしたとき ｜ｆ１｜＞１０ｆ を満足することを特徴とする撮影レンズ。[Claims for Utility Model Registration] Consisting of a meniscus lens with a convex surface facing the object side in order from the object side, an aperture, and a lens group having positive refractive power, the focal length of the meniscus lens is f.
1. A photographic lens that satisfies |f 1 |>10f, where f is the focal length of the entire system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17961686U JPS6384109U (en) | 1986-11-20 | 1986-11-20 | |
| US07/122,217 US4854679A (en) | 1986-11-20 | 1987-11-18 | Photographic system having front conversion lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17961686U JPS6384109U (en) | 1986-11-20 | 1986-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6384109U true JPS6384109U (en) | 1988-06-02 |
Family
ID=31122833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17961686U Pending JPS6384109U (en) | 1986-11-20 | 1986-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6384109U (en) |
-
1986
- 1986-11-20 JP JP17961686U patent/JPS6384109U/ja active Pending
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