JPH0236809U - - Google Patents
Info
- Publication number
- JPH0236809U JPH0236809U JP11663888U JP11663888U JPH0236809U JP H0236809 U JPH0236809 U JP H0236809U JP 11663888 U JP11663888 U JP 11663888U JP 11663888 U JP11663888 U JP 11663888U JP H0236809 U JPH0236809 U JP H0236809U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lens group
- zoom
- focus
- groups
- 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)
Description
第1図は本考案に係るズームレンズ鏡筒の一実
施例を示す略縦断面図、第2図は従来のズームレ
ンズ鏡筒の略縦断面図である。
2……ズームカム環、2a,2b,2c……カ
ム溝、3a,4a,4a′,9……カム軸、G1
……第1レンズ群、G2,G2′……第2レンズ
群、G3……第3レンズ群、4,4′……移動枠
、8……フオーカスカム、10……ガイドポール
。
FIG. 1 is a schematic vertical cross-sectional view showing an embodiment of a zoom lens barrel according to the present invention, and FIG. 2 is a schematic vertical cross-sectional view of a conventional zoom lens barrel. 2...Zoom cam ring, 2a, 2b, 2c...Cam groove, 3a, 4a, 4a', 9...Cam shaft, G1
...First lens group, G2 , G2 '...Second lens group, G3 ...Third lens group, 4, 4'...Movement frame, 8...Focus cam, 10...Guide pole.
Claims (1)
て関連移動せしめ、フオーカス時には第1レンズ
群以外のフオーカスレンズ群を自群内に内蔵する
駆動手段によつてフオーカス移動せしめるように
したインナーフオーカス方式のズームレンズ鏡筒
において、 前記第1レンズ群以外の、フオーカスレンズ群
を含むレンズ群を夫々摺動可能に支持するガイド
ポールを設けると共に、前記第1レンズ群以外の
レンズ群に夫々植設された単一のカム軸を前記ズ
ームカム環のカム溝に夫々嵌挿せしめたことを特
徴とするインナーフオーカス方式のズームレンズ
鏡筒。[Scope of Claim for Utility Model Registration] When zooming, each lens group is moved in relation to each other by a zoom cam ring, and when focusing, the focus lens groups other than the first lens group are moved by a driving means built into the lens group. In the inner focus zoom lens barrel, a guide pole is provided to slidably support each of the lens groups other than the first lens group, including the focus lens group, and a guide pole is provided to slidably support each of the lens groups other than the first lens group. A zoom lens barrel of an inner focus type, characterized in that a single cam shaft installed in each of the lens groups is fitted into a cam groove of the zoom cam ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11663888U JPH0236809U (en) | 1988-09-05 | 1988-09-05 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11663888U JPH0236809U (en) | 1988-09-05 | 1988-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0236809U true JPH0236809U (en) | 1990-03-09 |
Family
ID=31359352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11663888U Pending JPH0236809U (en) | 1988-09-05 | 1988-09-05 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0236809U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002296482A (en) * | 2001-03-30 | 2002-10-09 | Olympus Optical Co Ltd | Zoom lens barrel |
-
1988
- 1988-09-05 JP JP11663888U patent/JPH0236809U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002296482A (en) * | 2001-03-30 | 2002-10-09 | Olympus Optical Co Ltd | Zoom lens barrel |