JPS6054112U - Large diameter ultra wide angle lens - Google Patents
Large diameter ultra wide angle lensInfo
- Publication number
- JPS6054112U JPS6054112U JP14456883U JP14456883U JPS6054112U JP S6054112 U JPS6054112 U JP S6054112U JP 14456883 U JP14456883 U JP 14456883U JP 14456883 U JP14456883 U JP 14456883U JP S6054112 U JPS6054112 U JP S6054112U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- focal length
- positive
- object side
- negative
- 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.)
- Granted
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の大口径超広角レンズに係わる実施例を
表わすレンズ構成図、第２図は同収差図である。
１・・・物体、２・・・結像点、Ｌｌ・・・第ルンズ、
Ｌ２・・・第２レンズ、Ｌ３・・・第３レンズ、Ｌ４・
・・第４レンズ、Ｌ５・・・第５レンズ、Ｌ６・・・第
６レンズ、Ｌ７・・・第７レンズ、Ｌ８・・・第８レン
ズ、Ｌ９・・・第９レンズ、Ｌｔｏ・・・第１０レンズ
、ｒｌ？ｒ２〜ｒ２０・・・各レンズ面の曲率半径、ｄ
、、ｄ２〜ｄ１９・・・各レンズ面の軸上面間隔。FIG. 1 is a lens configuration diagram showing an embodiment of the large-diameter ultra-wide-angle lens of the present invention, and FIG. 2 is an aberration diagram of the same. 1...Object, 2...Imaging point, Ll...Luns,
L2...second lens, L3...third lens, L4...
...4th lens, L5...5th lens, L6...6th lens, L7...7th lens, L8...8th lens, L9...9th lens, Lto... 10th lens, rl? r2~r20...Radius of curvature of each lens surface, d
,,d2-d19...Axis spacing of each lens surface.
Claims (1)
カスレンズの第ルンズ、同じ＜ 物体側に凸面を向けた
負のメニスカスレンズの第２レンズ、正レンズの第３レ
ンズ、負レンズの第４レンズ、正レンズの第５レンズ、
物体側に凸面を向けた負のメニスカスレンズの第６レン
ズ、正レンズの第７レンズ、負レンズの第８レンズ、正
レンズの第９レンズ、同じく正レンズの第１０レンズと
よりなるレンズ系であって、次の条件を満足するレトロ
−フォーカス型大口径超広角レンズ。 （１） ５． Ｏｆ＜ｌ ｈｌ＜７． ０ｆ（２）
１０ｆ ｌ ｆ２１ ＜１３ｆ（３１１，３，ｆ＜
ｌ ｆ□２３４＋＜１． ９ｆ（４） ２． ７ｆ＜
Ｉ ｆ６７８１＜３． １ｆ（５） １． ３ｆ＜ｄ
８＜１． ７ｆ但し、ｆは全系の焦点距離、ｆｏは第ル
ンズの焦点距離、ｆ２は第２レンズの焦点距離、ｆ１□
カは第１・第２・第３及び第４レンズの合成焦点距離、
ｆ、は第６、第７及び第８レンズの合成焦点距離、ｄ８
は第４レンズと第５レンズの軸上空気間隔である。[Claims for Utility Model Registration] In order from the object side, a negative lens with a convex surface facing the object side □ The first lens of a niscus lens, same < The second lens of a negative meniscus lens with a convex surface facing the object side, a positive lens a third lens, a fourth lens that is a negative lens, a fifth lens that is a positive lens,
A lens system consisting of the sixth lens which is a negative meniscus lens with its convex surface facing the object side, the seventh lens which is a positive lens, the eighth lens which is a negative lens, the ninth lens which is a positive lens, and the tenth lens which is also a positive lens. A retro-focus, large-diameter, ultra-wide-angle lens that satisfies the following conditions: (1) 5. Of<l hl<7. 0f(2)
10f l f21 <13f(311,3,f<
l f□234+<1. 9f(4) 2. 7f<
I f6781<3. 1f(5) 1. 3f<d
8<1. 7f However, f is the focal length of the entire system, fo is the focal length of the first lens, f2 is the focal length of the second lens, f1□
F is the combined focal length of the first, second, third and fourth lenses,
f is the combined focal length of the sixth, seventh, and eighth lenses, d8
is the axial air distance between the fourth lens and the fifth lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14456883U JPS6054112U (en) | 1983-09-20 | 1983-09-20 | Large diameter ultra wide angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14456883U JPS6054112U (en) | 1983-09-20 | 1983-09-20 | Large diameter ultra wide angle lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6054112U true JPS6054112U (en) | 1985-04-16 |
| JPS6320973Y2 JPS6320973Y2 (en) | 1988-06-10 |
Family
ID=30322351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14456883U Granted JPS6054112U (en) | 1983-09-20 | 1983-09-20 | Large diameter ultra wide angle lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6054112U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430290A (en) * | 1977-08-08 | 1979-03-06 | Eastman Kodak Co | Novel copolyester |
-
1983
- 1983-09-20 JP JP14456883U patent/JPS6054112U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430290A (en) * | 1977-08-08 | 1979-03-06 | Eastman Kodak Co | Novel copolyester |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6320973Y2 (en) | 1988-06-10 |
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