JPS63150909U - - Google Patents
Info
- Publication number
- JPS63150909U JPS63150909U JP4382887U JP4382887U JPS63150909U JP S63150909 U JPS63150909 U JP S63150909U JP 4382887 U JP4382887 U JP 4382887U JP 4382887 U JP4382887 U JP 4382887U JP S63150909 U JPS63150909 U JP S63150909U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- fixed
- movable frame
- optical axis
- group lens
- 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 3
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Description
第１図は本考案のレンズのインナーフオーカシ
ング機構の実施例を示す要部の斜視図、第２図は
同縦断面図、第３図はレンズ系の構成例とその移
動位置を示すレンズ構成図、第４図は可動枠とガ
イドロツドの関係を示す正面図である。
１１…固定鏡筒、１２…前群レンズ枠、１３…
後群レンズ枠、１４…ガイドロツド、１５…前可
動枠、１６…後可動枠、１８…回転筒、１９…ギ
ヤ、２０…ジヨイント軸、２１…ピニオン、２２
…連動部、２４…手動操作筒、２５…内周ギヤ、
２６，２７…駆動溝、２８…ローラ、Ｌ１…前群
固定レンズ、Ｌ２…後群固定レンズ、Ｌ３…可動
前群レンズ、Ｌ４…可動後群レンズ。
Fig. 1 is a perspective view of the main parts showing an embodiment of the inner focusing mechanism of the lens of the present invention, Fig. 2 is a vertical sectional view of the lens, and Fig. 3 is a lens showing an example of the configuration of the lens system and its movement position. FIG. 4 is a front view showing the relationship between the movable frame and the guide rod. 11... Fixed lens barrel, 12... Front group lens frame, 13...
Rear group lens frame, 14... Guide rod, 15... Front movable frame, 16... Rear movable frame, 18... Rotating barrel, 19... Gear, 20... Joint shaft, 21... Pinion, 22
...Interlocking part, 24...Manual operation tube, 25...Inner peripheral gear,
26, 27... Drive groove, 28... Roller, L1... Front group fixed lens, L2... Rear group fixed lens, L3... Movable front group lens, L4... Movable rear group lens.
Claims (1)
ンズを固定し、この前群レンズと後群レンズの間
に、可動の焦点調節レンズを配したレンズのイン
ターナルフオーカシング機構において、上記固定
鏡筒に、光軸と平行な複数のガイドロツドを固定
するとともに、回動操作される回転筒を回動可能
に支持し、上記ガイドロツドに上記焦点調節レン
ズを固定した可動枠を光軸方向に移動可能に支持
し、かつこの可動枠と上記回転筒とを、該回転筒
の回動に伴ない可動枠が光軸方向に移動するよう
に連動させたことを特徴とするレンズのインター
ナルフオーカシング機構。 In an internal focusing mechanism for a lens, in which a front group lens and a rear group lens are fixed at the front and rear of a fixed lens barrel, and a movable focusing lens is arranged between the front group lens and the rear group lens, the fixed mirror A plurality of guide rods parallel to the optical axis are fixed to the tube, a rotary tube that is rotated is rotatably supported, and a movable frame with the focusing lens fixed to the guide rod can be moved in the direction of the optical axis. an internal focusing mechanism for a lens, characterized in that the movable frame and the rotary barrel are interlocked so that the movable frame moves in the optical axis direction as the rotary barrel rotates. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4382887U JPS63150909U (en) | 1987-03-25 | 1987-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4382887U JPS63150909U (en) | 1987-03-25 | 1987-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63150909U true JPS63150909U (en) | 1988-10-04 |
Family
ID=30861059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4382887U Pending JPS63150909U (en) | 1987-03-25 | 1987-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63150909U (en) |
-
1987
- 1987-03-25 JP JP4382887U patent/JPS63150909U/ja active Pending
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