JPH0220821U - - Google Patents
Info
- Publication number
- JPH0220821U JPH0220821U JP9904388U JP9904388U JPH0220821U JP H0220821 U JPH0220821 U JP H0220821U JP 9904388 U JP9904388 U JP 9904388U JP 9904388 U JP9904388 U JP 9904388U JP H0220821 U JPH0220821 U JP H0220821U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light beam
- optical axis
- lens holding
- mirror
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図はこの考案の一実施例に係るレンズ駆動
装置の平面図、第２図は第１図の構成の―線
で得た縦断面図、第３図は第２図の対物レンズ保
持部材２１の要部の説明図、第４図は第３図の矢
印Ｃから見た説明図、第５図は従来のレンズ駆動
装置の平面図、第６図は第５図の構成の―線
で得た縦断面図である。
図において、１は本体フレーム、２は指示軸、
３は対物レンズ、２１は対物レンズ保持部材、２
１ａは凹部、２１ｂはアパーチヤー、２２は平板
ミラー、２３は２分割光検知器、２３ａ，２３ｂ
は光検知部、２４は検知器保持部材である。なお
、図中、同一符号は同一、又は相当部分を示す。
Fig. 1 is a plan view of a lens driving device according to an embodiment of this invention, Fig. 2 is a vertical sectional view taken along the line - - of the configuration of Fig. 1, and Fig. 3 is the objective lens holding member of Fig. 2. 21, FIG. 4 is an explanatory diagram as seen from arrow C in FIG. 3, FIG. 5 is a plan view of a conventional lens driving device, and FIG. 6 is a diagram showing the structure shown in FIG. It is a longitudinal cross-sectional view obtained. In the figure, 1 is the main body frame, 2 is the indicator axis,
3 is an objective lens, 21 is an objective lens holding member, 2
1a is a recess, 21b is an aperture, 22 is a flat mirror, 23 is a two-split photodetector, 23a, 23b
2 is a photodetector, and 24 is a detector holding member. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
持手段をレンズの光軸と直角な方向に駆動する手
段と、レンズ保持手段のレンズの光軸と直角な方
向の位置を検出するための光束をレンズの光軸に
平行に入射する手段と、レンズ保持手段に取り付
けられ光束を直角に折り曲げるミラー手段と、ミ
ラー手段からの反射光束の大きさを制限する手段
と、ミラー手段からの反射光束の位置を検出する
手段を備えることを特徴とするレンズ駆動装置。 A lens holding means for holding a lens, a means for driving the lens holding means in a direction perpendicular to the optical axis of the lens, and a means for driving a light beam for detecting the position of the lens holding means in a direction perpendicular to the optical axis of the lens. means for making the light incident parallel to the optical axis; mirror means attached to the lens holding means to bend the light beam at right angles; means for limiting the size of the reflected light beam from the mirror means; and detecting the position of the reflected light beam from the mirror means. A lens driving device characterized by comprising means for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9904388U JPH0220821U (en) | 1988-07-25 | 1988-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9904388U JPH0220821U (en) | 1988-07-25 | 1988-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0220821U true JPH0220821U (en) | 1990-02-13 |
Family
ID=31325840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9904388U Pending JPH0220821U (en) | 1988-07-25 | 1988-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0220821U (en) |
-
1988
- 1988-07-25 JP JP9904388U patent/JPH0220821U/ja active Pending