JPH0280319U - - Google Patents
Info
- Publication number
- JPH0280319U JPH0280319U JP15889788U JP15889788U JPH0280319U JP H0280319 U JPH0280319 U JP H0280319U JP 15889788 U JP15889788 U JP 15889788U JP 15889788 U JP15889788 U JP 15889788U JP H0280319 U JPH0280319 U JP H0280319U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- recording medium
- information recording
- holder
- light source
- 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 description 4
- 230000004907 flux Effects 0.000 claims 3
Landscapes
- Optical Head (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Description
第１図はこの考案の一実施例による光学式ヘツ
ドのレンズ保持装置を示す断面図、第２図は第１
図のレンズ保持装置の平面図、第３図は第１図の
レンズ保持装置の断面図、第４図は従来の光学式
ヘツドの対物レンズ保持装置を示す断面図である
。
図において、１は対物レンズ、８はデイスク、
９は光源、１１はアクチユエータ、１２は光検出
器、１３はレンズ、１４はホルダ、１４ａ，１４
ｂ，１４ｃ，１４ｄはガイド部材、１７はレンズ
である。なお図中、同一符号は同一または相当部
材を示す。
FIG. 1 is a sectional view showing a lens holding device for an optical head according to an embodiment of this invention, and FIG.
3 is a sectional view of the lens holder shown in FIG. 1, and FIG. 4 is a sectional view showing the objective lens holder of a conventional optical head. In the figure, 1 is an objective lens, 8 is a disk,
9 is a light source, 11 is an actuator, 12 is a photodetector, 13 is a lens, 14 is a holder, 14a, 14
b, 14c, and 14d are guide members, and 17 is a lens. In addition, in the drawings, the same reference numerals indicate the same or equivalent members.
Claims (1)
集光する対物レンズと、前記対物レンズを前記情
報記録媒体に対して垂直方向に駆動する手段と、
前記情報記録媒体からの反射光束を受光し再生信
号及び制御信号を得るための光検出器と、前記光
源からの光束を対物レンズへ導くレンズ及びこの
レンズを固定する第１のホルダと、前記情報記録
媒体からの反射光束を前記光検出器上に焦点を結
ばせるためのレンズ及びこのレンズを固定する第
２のホルダとを備えた光学式ヘツドのレンズ保持
装置において、前記第１、第２のホルダの少なく
とも一のホルダに突出形成され半径方向の外側に
弾性変形可能な複数のガイド部を設け、前記ガイ
ド部材によつてレンズを保持固定したことを特徴
とする光学式ヘツドのレンズ保持装置。 a light source, an objective lens for condensing a luminous flux from the light source onto an information recording medium, and means for driving the objective lens in a direction perpendicular to the information recording medium;
a photodetector for receiving the reflected light flux from the information recording medium to obtain a reproduction signal and a control signal; a lens for guiding the light flux from the light source to an objective lens; a first holder for fixing this lens; and the information recording medium. A lens holding device for an optical head comprising a lens for focusing a reflected light beam from a recording medium on the photodetector and a second holder for fixing the lens, wherein the first and second What is claimed is: 1. A lens holding device for an optical head, characterized in that a plurality of guide parts are provided on at least one of the holders to protrude from the holder and are elastically deformable on the outside in the radial direction, and a lens is held and fixed by the guide member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15889788U JPH0280319U (en) | 1988-12-05 | 1988-12-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15889788U JPH0280319U (en) | 1988-12-05 | 1988-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0280319U true JPH0280319U (en) | 1990-06-20 |
Family
ID=31439640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15889788U Pending JPH0280319U (en) | 1988-12-05 | 1988-12-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0280319U (en) |
-
1988
- 1988-12-05 JP JP15889788U patent/JPH0280319U/ja active Pending
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