JPS61153018U - - Google Patents
Info
- Publication number
- JPS61153018U JPS61153018U JP3618485U JP3618485U JPS61153018U JP S61153018 U JPS61153018 U JP S61153018U JP 3618485 U JP3618485 U JP 3618485U JP 3618485 U JP3618485 U JP 3618485U JP S61153018 U JPS61153018 U JP S61153018U
- Authority
- JP
- Japan
- Prior art keywords
- cam ring
- fixed cylinder
- optical axis
- axis direction
- circumferential groove
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 description 1
Description
第１図は本考案に係るズームレンズ鏡筒の実施
例の要部上半断面図、第２図はそのカム環保持構
造の要部分解斜視図、第３図はそのカム環へのは
め込み板の組立説明図、第４図は従来例のズーム
レンズ鏡筒の縦断面図、第５図はその要部の拡大
上半断面図である。
２１……合焦レンズホルダ、２２……固定筒、
２３……カム環、２３ｄ……周溝、２４……前側
マスク板、２５……後側マスク板、２５ａ……環
状溝、２６……スペーサ、２７……はめ込み板、
２８，２９……ねじ。
Fig. 1 is an upper half sectional view of the main part of an embodiment of the zoom lens barrel according to the present invention, Fig. 2 is an exploded perspective view of the main part of the cam ring holding structure, and Fig. 3 is a plate fitted into the cam ring. FIG. 4 is a vertical sectional view of a conventional zoom lens barrel, and FIG. 5 is an enlarged upper half sectional view of the main parts thereof. 21... Focusing lens holder, 22... Fixed barrel,
23...Cam ring, 23d...Peripheral groove, 24...Front mask plate, 25...Rear mask plate, 25a...Annular groove, 26...Spacer, 27...Inset plate,
28, 29...Screw.
Claims (1)
ズとの光軸方向の変位を行うカム環と、該カム環
を保持するマスク板が前後両端に取付けられた該
固定筒との位置決め手段として、該カム環の一端
部に周溝を形成し、該周溝に係合するリング状は
め込み板を該固定筒と一方のマスク板との間にス
ペーサを介して挟み込んで固着して該カム環を光
軸方向に保持して成るズームレンズ鏡筒。 As a means for positioning a cam ring fitted in a fixed cylinder and displacing a variable magnification lens and a correction lens in the optical axis direction, and the fixed cylinder having mask plates for holding the cam ring attached to both front and rear ends. A circumferential groove is formed at one end of the cam ring, and a ring-shaped fitting plate that engages with the circumferential groove is sandwiched and fixed between the fixed cylinder and one mask plate via a spacer, thereby forming the cam ring. A zoom lens barrel that is held in the optical axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3618485U JPS61153018U (en) | 1985-03-15 | 1985-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3618485U JPS61153018U (en) | 1985-03-15 | 1985-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61153018U true JPS61153018U (en) | 1986-09-22 |
Family
ID=30541129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3618485U Pending JPS61153018U (en) | 1985-03-15 | 1985-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61153018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120215U (en) * | 1987-01-27 | 1988-08-03 |
-
1985
- 1985-03-15 JP JP3618485U patent/JPS61153018U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120215U (en) * | 1987-01-27 | 1988-08-03 |
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