JPS62140511U - - Google Patents
Info
- Publication number
- JPS62140511U JPS62140511U JP2670886U JP2670886U JPS62140511U JP S62140511 U JPS62140511 U JP S62140511U JP 2670886 U JP2670886 U JP 2670886U JP 2670886 U JP2670886 U JP 2670886U JP S62140511 U JPS62140511 U JP S62140511U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- barrel
- optical axis
- axis direction
- cam ring
- 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 4
- 230000001105 regulatory effect Effects 0.000 claims 1
Landscapes
- Lens Barrels (AREA)
Description
第１図は、本考案に係るズームレンズ鏡筒の要
部の上半の断面図、第２図は従来例のズームレン
ズ鏡筒の縦断面図である。
１１…合焦レンズホルダー、１２…前部固定筒
、１３…後部固定筒、１４…カム環、１２ａ…周
溝、１４ａ…カム環周状受け面を形成する突部。
FIG. 1 is a sectional view of the upper half of the essential parts of a zoom lens barrel according to the present invention, and FIG. 2 is a longitudinal sectional view of a conventional zoom lens barrel. DESCRIPTION OF SYMBOLS 11... Focusing lens holder, 12... Front fixed barrel, 13... Rear fixed barrel, 14... Cam ring, 12a... Circumferential groove, 14a... Projection forming a cam ring circumferential receiving surface.
Claims (1)
ンズホルダを光軸方向に進退可能に装着し、該固
定筒内に変倍レンズおよび補正レンズを光軸方向
に変位させるカム環を嵌装し、該カム環を該固定
筒体で回動させることにより変倍レンズおよび補
正レンズを変位させてズーミングを行うズームレ
ンズの鏡筒において、上記の固定筒を前後の固定
筒部分に分割し、該カム環の外周に突部を設けて
これに光軸方向受け面を形成し、該受け面を前後
の固定筒部分の間に挾さみつけることによつて該
固定筒内における該カム環の光軸方向の位置を規
制するようにしたことを特徴とするズームレンズ
の鏡筒。 A focusing lens holder that holds a focusing lens is attached to the front end of the fixed barrel so that it can move forward and backward in the optical axis direction, and a cam ring that displaces the variable power lens and correction lens in the optical axis direction is fitted into the fixed barrel. In a zoom lens barrel that performs zooming by displacing a variable power lens and a correction lens by rotating the cam ring with the fixed barrel, the fixed barrel is divided into front and rear fixed barrel parts, A protrusion is provided on the outer periphery of the cam ring to form a receiving surface in the optical axis direction, and the receiving surface is sandwiched between the front and rear fixed cylinder parts, thereby making it possible to secure the cam ring within the fixed cylinder. A zoom lens barrel characterized by regulating the position in the optical axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2670886U JPS62140511U (en) | 1986-02-26 | 1986-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2670886U JPS62140511U (en) | 1986-02-26 | 1986-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62140511U true JPS62140511U (en) | 1987-09-04 |
Family
ID=30828039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2670886U Pending JPS62140511U (en) | 1986-02-26 | 1986-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62140511U (en) |
-
1986
- 1986-02-26 JP JP2670886U patent/JPS62140511U/ja active Pending