JPS61119142U - - Google Patents
Info
- Publication number
- JPS61119142U JPS61119142U JP239185U JP239185U JPS61119142U JP S61119142 U JPS61119142 U JP S61119142U JP 239185 U JP239185 U JP 239185U JP 239185 U JP239185 U JP 239185U JP S61119142 U JPS61119142 U JP S61119142U
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- light beam
- telephoto
- front lens
- finder
- 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
- 230000003287 optical effect Effects 0.000 claims 2
- 230000011514 reflex Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 description 1
Description
第１図は本考案の実施例の配置構成を示した断
面図である。
１……望遠補助レンズ装置、１ａ……前部鏡筒
、１ｂ……後部鏡筒、２……カメラ、３……前部
鏡筒取付ネジ、４……前群レンズ、５……後群レ
ンズ、６……撮影レンズ、７……光束分割器、８
……コンデンサーレンズ、９……ペンタプリズム
、１０，１１……全反射ミラー、１２……接眼レ
ンズ。
FIG. 1 is a sectional view showing the arrangement of an embodiment of the present invention. 1...Telephoto auxiliary lens device, 1a...Front lens barrel, 1b...Rear lens barrel, 2...Camera, 3...Front lens barrel mounting screw, 4...Front group lens, 5...Rear group Lens, 6... Photographing lens, 7... Luminous flux splitter, 8
... Condenser lens, 9 ... Pentaprism, 10, 11 ... Total reflection mirror, 12 ... Eyepiece.
Claims (1)
望遠補助レンズ装置に於いて、前群レンズ群を交
換可能とし、かつ前記前群レンズ群の後方に光軸
と直角に入視光束の一部を曲げる光束分割器を設
け、該曲げられた光束に対しフアインダー光学系
を配し一眼レフ式のフアインダーを備えたことを
特徴とする望遠補助レンズ装置。 In a Keplerian type telephoto auxiliary lens device consisting of a front lens group and a rear lens group, the front lens group is replaceable, and a part of the incident light beam is transmitted at right angles to the optical axis behind the front lens group. A telephoto auxiliary lens device, characterized in that it is provided with a light beam splitter that bends, a finder optical system is arranged for the bent light beam, and a single-lens reflex type finder is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP239185U JPS61119142U (en) | 1985-01-14 | 1985-01-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP239185U JPS61119142U (en) | 1985-01-14 | 1985-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61119142U true JPS61119142U (en) | 1986-07-28 |
Family
ID=30476025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP239185U Pending JPS61119142U (en) | 1985-01-14 | 1985-01-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61119142U (en) |
-
1985
- 1985-01-14 JP JP239185U patent/JPS61119142U/ja active Pending
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