JPS62109131U - - Google Patents
Info
- Publication number
- JPS62109131U JPS62109131U JP19978385U JP19978385U JPS62109131U JP S62109131 U JPS62109131 U JP S62109131U JP 19978385 U JP19978385 U JP 19978385U JP 19978385 U JP19978385 U JP 19978385U JP S62109131 U JPS62109131 U JP S62109131U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- field
- fresnel
- telephoto
- utility
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Lenses (AREA)
Description
第1図は本考案のフイールドレンズ部にフレネ
ルレンズを使用したケプラー型レンズ系の構成図
、第2図は従来のフイールドレンズ部を有するケ
プラー型レンズ系を示す構成図である。
1…前群レンズ系、2…フレネルレンズ、3…
後群レンズ系、4…撮影レンズ系、5…フイール
ドレンズ。
FIG. 1 is a block diagram of a Keplerian lens system using a Fresnel lens in the field lens section of the present invention, and FIG. 2 is a block diagram showing a conventional Keplerian lens system having a field lens section. 1...Front group lens system, 2...Fresnel lens, 3...
Rear group lens system, 4...Photographing lens system, 5...Field lens.
Claims (1)
から成るケプラー型レンズ系であつて前記フイー
ルドレンズにフレネルレンズを使用したことを特
徴とする望遠補助レンズ。 1. A telephoto auxiliary lens, which is a Keplerian type lens system consisting of a front group lens, a field lens, and a rear group lens, and is characterized in that a Fresnel lens is used as the field lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19978385U JPS62109131U (en) | 1985-12-27 | 1985-12-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19978385U JPS62109131U (en) | 1985-12-27 | 1985-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62109131U true JPS62109131U (en) | 1987-07-11 |
Family
ID=31161729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19978385U Pending JPS62109131U (en) | 1985-12-27 | 1985-12-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62109131U (en) |
-
1985
- 1985-12-27 JP JP19978385U patent/JPS62109131U/ja active Pending