JPH01103017U - - Google Patents
Info
- Publication number
- JPH01103017U JPH01103017U JP19496587U JP19496587U JPH01103017U JP H01103017 U JPH01103017 U JP H01103017U JP 19496587 U JP19496587 U JP 19496587U JP 19496587 U JP19496587 U JP 19496587U JP H01103017 U JPH01103017 U JP H01103017U
- Authority
- JP
- Japan
- Prior art keywords
- holder
- wave plate
- stepped portion
- support mechanism
- fixing member
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図〜第３図は本考案の波長板支持機構の一
実施例を示す構成図、第４図は波長板の使用例を
示す光磁気デイスク再生装置の構成図、第５図は
従来の波長板支持機構の一例を示す構成図である
。
１……光磁気デイスク、２……レーザ光源、３
……コリメータレンズ、４……ミラー、５……対
物レンズ、６１，６２……ビームスプリツタ、６
３……偏光ビームスプリツタ、７……１／２波長
板、７１……ホルダ、７２……ホルダ支持部、７
３……止めネジ、７４……段付き部、７５……固
定部材、８１，８２……光検出器、９１，９２…
…アンプ、１０……差動アンプ。
Figures 1 to 3 are block diagrams showing one embodiment of the wave plate support mechanism of the present invention, Figure 4 is a block diagram of a magneto-optical disk reproducing device showing an example of the use of the wave plate, and Figure 5 is a block diagram of a conventional wave plate support mechanism. It is a block diagram which shows an example of a wavelength plate support mechanism. 1... magneto-optical disk, 2... laser light source, 3
... Collimator lens, 4 ... Mirror, 5 ... Objective lens, 61, 62 ... Beam splitter, 6
3...Polarizing beam splitter, 7...1/2 wavelength plate, 71...Holder, 72...Holder support part, 7
3... Set screw, 74... Stepped portion, 75... Fixing member, 81, 82... Photodetector, 91, 92...
...Amplifier, 10...Differential amplifier.
Claims (1)
ホルダと、このホルダの内部に挿嵌されその段付
き部との間で緩衝材を介して波長板を挾持するリ
ング状の固定部材と、前記ホルダを回転自在に支
持するとともにホルダの端部を止めネジなどによ
り押圧してその状態を維持するホルダ支持部とを
具備してなる波長板支持機構。 A cylindrical holder having a stepped portion on the inner periphery of the approximately central portion, and a ring-shaped fixing member that is inserted into the holder and holds the wave plate between the stepped portion via a cushioning material. A wave plate support mechanism comprising: a holder support portion that rotatably supports the holder and maintains the state by pressing an end portion of the holder with a set screw or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19496587U JPH01103017U (en) | 1987-12-23 | 1987-12-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19496587U JPH01103017U (en) | 1987-12-23 | 1987-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01103017U true JPH01103017U (en) | 1989-07-12 |
Family
ID=31485664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19496587U Pending JPH01103017U (en) | 1987-12-23 | 1987-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01103017U (en) |
-
1987
- 1987-12-23 JP JP19496587U patent/JPH01103017U/ja active Pending