JPH01142911U - - Google Patents
Info
- Publication number
- JPH01142911U JPH01142911U JP3781388U JP3781388U JPH01142911U JP H01142911 U JPH01142911 U JP H01142911U JP 3781388 U JP3781388 U JP 3781388U JP 3781388 U JP3781388 U JP 3781388U JP H01142911 U JPH01142911 U JP H01142911U
- Authority
- JP
- Japan
- Prior art keywords
- optical axis
- lens block
- lens
- protrusions
- guide post
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Description
第1図は本考案によるレンズ繰り出し機構の一
実施例のレンズブロツクのガイドポストが挿通さ
れる孔の断面図、第2図A及びBは夫々上記実施
例の孔及びその変形例の要部拡大断面図、第3図
は上記実施例におけるガイドポストに対するレン
ズブロツクの傾斜の度合を示す要部断面図、第4
部は従来例の要部分解斜視図、第5図は従来例の
レンズブロツクのガイドポストが挿通される孔の
断面図、第6図は従来例におけるガイドポストに
対するレンズブロツクの傾斜の度合を示す要部断
面図である。
1……レンズ、2……レンズブロツク、2a…
…突部、2b……孔、2c……溝、2d,2e…
…腕部、2f……突条、3,4……ガイドポスト
、5……カムリング、5a……カム部、6……バ
ネ部材。
Fig. 1 is a cross-sectional view of a hole through which a guide post of a lens block of an embodiment of the lens feeding mechanism according to the present invention is inserted, and Figs. 2 A and B are enlarged views of essential parts of the hole of the above embodiment and a modification thereof, respectively. FIG. 3 is a cross-sectional view of a main part showing the degree of inclination of the lens block with respect to the guide post in the above embodiment, and FIG.
5 is a sectional view of the hole through which the guide post of the lens block of the conventional example is inserted, and FIG. 6 shows the degree of inclination of the lens block with respect to the guide post of the conventional example. It is a sectional view of the main part. 1... Lens, 2... Lens block, 2a...
...Protrusion, 2b...hole, 2c...groove, 2d, 2e...
...Arm portion, 2f...Protrusion, 3, 4...Guide post, 5...Cam ring, 5a...Cam portion, 6...Spring member.
Claims (1)
と、該レンズブロツクを光軸方向に摺動可能に支
持する光軸と平行な二本のガイドポストと、光軸
と直交する端面に前記突部に対応する複数個のカ
ム部が形成されたカムリングと、前記レンズブロ
ツクの突部を前記カムリングのカム部に圧接せし
めるバネ部材とから成り、前記カムリングを光軸
のまわりに回動せしめることにより前記レンズブ
ロツクを光軸に沿つて前後動せしめるようにした
レンズ繰り出し機構において、前記レンズブロツ
クの前記ガイドポストが挿通する孔又は溝の内面
に突条を形成したことを特徴とするレンズ繰り出
し機構。 A lens block having a plurality of protrusions on the outer peripheral surface, two guide posts parallel to the optical axis that support the lens block so as to be slidable in the optical axis direction, and the protrusions on the end face perpendicular to the optical axis. It consists of a cam ring in which a plurality of cam portions corresponding to A lens feeding mechanism for moving a lens block back and forth along an optical axis, characterized in that a protrusion is formed on the inner surface of a hole or groove through which the guide post of the lens block is inserted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3781388U JPH01142911U (en) | 1988-03-23 | 1988-03-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3781388U JPH01142911U (en) | 1988-03-23 | 1988-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01142911U true JPH01142911U (en) | 1989-09-29 |
Family
ID=31264389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3781388U Pending JPH01142911U (en) | 1988-03-23 | 1988-03-23 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01142911U (en) |
-
1988
- 1988-03-23 JP JP3781388U patent/JPH01142911U/ja active Pending