JPS60128312U - Focusing device for lens barrel with small extension amount - Google Patents
Focusing device for lens barrel with small extension amountInfo
- Publication number
- JPS60128312U JPS60128312U JP1641684U JP1641684U JPS60128312U JP S60128312 U JPS60128312 U JP S60128312U JP 1641684 U JP1641684 U JP 1641684U JP 1641684 U JP1641684 U JP 1641684U JP S60128312 U JPS60128312 U JP S60128312U
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- focusing device
- extension amount
- small extension
- 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
- Focusing (AREA)
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の全体繰出し大焦点合せ装置の一例を示す
半断面図、第２図は従来の他の一例を示す半断面図、第
３図は本実施例の装置を宗す半断面図である。
１・・・固定筒、２・・・回転筒、４・・・直進筒、８
・・・操作環、１１・・・押え枠。Fig. 1 is a half-sectional view showing an example of a conventional whole-feeding large focusing device, Fig. 2 is a half-sectional view showing another example of the conventional device, and Fig. 3 is a half-sectional view of the device of this embodiment. It is. 1... Fixed tube, 2... Rotating tube, 4... Straight tube, 8
... Operating ring, 11... Presser frame.
Claims (1)
案内溝に滑動する案内ピンの相互作動により撮影レンズ
系全体を光軸方向に直進させて焦点合せを行う形式のレ
ンズ鏡筒において、前記へリコイドねじを固定筒と回転
筒との間にのみ設け、回転筒と直進筒を回動自在に嵌合
させると共に、直進筒と固定筒との間に前記回転筒と直
進筒が圧接する方向に付勢するばねを備えた事を特徴と
する繰出し量小なるレンズ鏡筒の焦点合せ装置。 ２ 前記へリコイドねじを回転筒と直進筒との間にのみ
設け、固定筒と回転筒を回動自在に嵌合させる様にした
事を特徴とする実用新案登録請求の範囲第１項記載の繰
出し量小なるレンズ鏡筒の焦点合せ装置。[Claims for Utility Model Registration] 1. The entire photographic lens system is moved straight in the optical axis direction and focused by the rotation of the helicoid screw, the mutual action of the guide groove for straight movement, and the guide pin that slides in the guide groove. In a lens barrel of the type that performs A focusing device for a lens barrel with a small extension amount, characterized by comprising a spring that biases the rotary barrel and the linear barrel in a direction in which they come into pressure contact with each other. 2. The utility model according to claim 1, characterized in that the helicoid screw is provided only between the rotary cylinder and the linear cylinder so that the fixed cylinder and the rotary cylinder are rotatably fitted. Focusing device for lens barrel with small extension amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1641684U JPS60128312U (en) | 1984-02-08 | 1984-02-08 | Focusing device for lens barrel with small extension amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1641684U JPS60128312U (en) | 1984-02-08 | 1984-02-08 | Focusing device for lens barrel with small extension amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60128312U true JPS60128312U (en) | 1985-08-28 |
Family
ID=30503166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1641684U Pending JPS60128312U (en) | 1984-02-08 | 1984-02-08 | Focusing device for lens barrel with small extension amount |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60128312U (en) |
-
1984
- 1984-02-08 JP JP1641684U patent/JPS60128312U/en active Pending
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