JPS59116915U - zoom lens barrel - Google Patents
zoom lens barrelInfo
- Publication number
- JPS59116915U JPS59116915U JP1081383U JP1081383U JPS59116915U JP S59116915 U JPS59116915 U JP S59116915U JP 1081383 U JP1081383 U JP 1081383U JP 1081383 U JP1081383 U JP 1081383U JP S59116915 U JPS59116915 U JP S59116915U
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- drive system
- refractive power
- zoom lens
- lens barrel
- 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
- Lens Barrels (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例のズームレンズ鏡筒の断面図
、第２図は本実施例についての各レンズ群の移動の様子
を説明する図、第３図は広角端に設定したときの各部の
位置関係を示す展開図、第４図は望遠端に設定したとき
の各部の位置関係を示す展開図である。
〔主要部分の符号の説明〕、Ｇ□・・・第ルンズｉＪ、
Ｇ’・・・第２レンズ群、Ｇ３１．Ｇ３２・・・第３レ
ンズ群、１・・・固定筒、４． ５． ６． ８・・・
可動保持部材、９・・・カム筒。Figure 1 is a cross-sectional view of a zoom lens barrel according to an embodiment of the present invention, Figure 2 is a diagram explaining the movement of each lens group in this embodiment, and Figure 3 is when set at the wide-angle end. FIG. 4 is a developed view showing the positional relationship of each part when the telephoto end is set. [Explanation of symbols of main parts], G□... No. Runs iJ,
G'...Second lens group, G31. G32...Third lens group, 1...Fixed barrel, 4. 5. 6. 8...
Movable holding member, 9... cam cylinder.
Claims (1)
折力の第２レンズ群、正屈折力の第３レンズ群と；合焦
操作に応じて前記第ルンズ群を光軸方向に変位させる合
焦駆動系と；変位操作に応じて前記各レンズ群を共に光
軸に沿って同一、 方向に変位させる変倍駆動系とを
有し、該変倍駆動系は広角端から望遠端への変倍操作に
応じて前記各レンズ群を共に物体側へ変位させることを
特徴とするズームレンズ鏡筒。A first lens group with positive refractive power, a second lens group with negative refractive power, and a third lens group with positive refractive power are arranged in order from the object side; a focusing drive system for displacing; and a variable power drive system for displacing each lens group in the same direction along the optical axis in response to a displacement operation, and the variable power drive system moves from a wide-angle end to a telephoto end A zoom lens barrel characterized in that each of the lens groups is displaced toward an object side in response to a zooming operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1081383U JPS59116915U (en) | 1983-01-28 | 1983-01-28 | zoom lens barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1081383U JPS59116915U (en) | 1983-01-28 | 1983-01-28 | zoom lens barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59116915U true JPS59116915U (en) | 1984-08-07 |
Family
ID=30142248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1081383U Pending JPS59116915U (en) | 1983-01-28 | 1983-01-28 | zoom lens barrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59116915U (en) |
-
1983
- 1983-01-28 JP JP1081383U patent/JPS59116915U/en active Pending
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