JPS5994304U - zoom lens barrel - Google Patents
zoom lens barrelInfo
- Publication number
- JPS5994304U JPS5994304U JP18914982U JP18914982U JPS5994304U JP S5994304 U JPS5994304 U JP S5994304U JP 18914982 U JP18914982 U JP 18914982U JP 18914982 U JP18914982 U JP 18914982U JP S5994304 U JPS5994304 U JP S5994304U
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- zoom lens
- correction cam
- diaphragm
- optical axis
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、この考案の１実施例を示す縦断面図、第２図
は、その要部分解斜視図、第３図は、この考案の他の実
施例を示す要部分解斜視図である。
１・・・・・・保持枠、２・・・・・・固定筒、３・・
・・・・摺動筒、５・・・・・・保持枠、６・・・・・
・摺動筒、７・・・・・・絞り装置、８・・・・・・連
動リング、９・・・・・・カム筒、１１・・間焦点調節
リング−１２・・・・・・ズームリング、１５・・商補
正カム部材、１８・・・・・・絞り設定カム、７１・・
・・・・絞り基板、７２・・・・・・絞り羽根、７３・
・・・・・絞り開閉リング。FIG. 1 is a vertical sectional view showing one embodiment of this invention, FIG. 2 is an exploded perspective view of the main part thereof, and FIG. 3 is an exploded perspective view of the main part showing another embodiment of this invention. . 1... Holding frame, 2... Fixed cylinder, 3...
... Sliding tube, 5 ... Holding frame, 6 ...
・Sliding barrel, 7... Aperture device, 8... Interlocking ring, 9... Cam barrel, 11... Focus adjustment ring -12... Zoom ring, 15... Quotient correction cam member, 18... Aperture setting cam, 71...
...Aperture board, 72...Aperture blade, 73.
...Aperture opening/closing ring.
Claims (1)
有するズームレンズ鏡筒において、光軸に対して所定角
度傾斜して前後に伸長する補正カム部を有する補正カム
部材を鏡筒固定部に固設し、上記絞り装置の絞り開閉リ
ングの一部を直接又は、 間接的に上記補正カム部に
係合させることにより、ズーミング操作に伴う上記絞り
装置の移動により上記補正カム部か上記絞り開閉リング
を回転させて開放絞り値を常に一定値にするようにした
ことを特徴とするズームレンズ鏡筒。In a zoom lens barrel having an aperture device that moves in the optical axis direction by a zooming operation, a correction cam member having a correction cam part that extends back and forth and tilted at a predetermined angle with respect to the optical axis is fixed to a lens barrel fixing part. , by directly or indirectly engaging a part of the diaphragm opening/closing ring of the diaphragm device with the correction cam portion, the correction cam portion or the diaphragm opening/closing ring is rotated by the movement of the diaphragm device accompanying the zooming operation. A zoom lens barrel characterized in that the open aperture value is always kept at a constant value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18914982U JPS5994304U (en) | 1982-12-16 | 1982-12-16 | zoom lens barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18914982U JPS5994304U (en) | 1982-12-16 | 1982-12-16 | zoom lens barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5994304U true JPS5994304U (en) | 1984-06-27 |
Family
ID=30407880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18914982U Pending JPS5994304U (en) | 1982-12-16 | 1982-12-16 | zoom lens barrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994304U (en) |
-
1982
- 1982-12-16 JP JP18914982U patent/JPS5994304U/en active Pending
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