JPH0337613U - - Google Patents
Info
- Publication number
- JPH0337613U JPH0337613U JP9449489U JP9449489U JPH0337613U JP H0337613 U JPH0337613 U JP H0337613U JP 9449489 U JP9449489 U JP 9449489U JP 9449489 U JP9449489 U JP 9449489U JP H0337613 U JPH0337613 U JP H0337613U
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical disk
- reflected return
- shielding plate
- incident path
- 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 7
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の一実施例に係るチルトセンサ
を示す側面図、第２図は従来のビデオデイスクプ
レーヤなどに設けられているチルトサーボ機構を
示すブロツク図、第３図は従来のチルトセンサを
示す側面図、第４Ａ図および第４Ｂ図はそれぞれ
第３図のチルトセンサの動作を説明するための図
である。
１……発光ダイオード、１２……フオトダイオ
ード、２３……遮光板、２３ａ……反射面、２４
……反射戻り光。
Fig. 1 is a side view showing a tilt sensor according to an embodiment of the present invention, Fig. 2 is a block diagram showing a tilt servo mechanism provided in a conventional video disc player, etc., and Fig. 3 is a side view showing a tilt sensor according to an embodiment of the present invention. The side view, FIG. 4A, and FIG. 4B are diagrams for explaining the operation of the tilt sensor shown in FIG. 3, respectively. 1... Light emitting diode, 12... Photo diode, 23... Light shielding plate, 23a... Reflective surface, 24
...Reflected light.
Claims (1)
情報を再生するピツクアツプに、光デイスクに対
向する発光部と、この発光部から発せられ光デイ
スクに反射された反射戻り光が入射する受光部と
、前記反射戻り光が光デイスクから受光部に入射
する入射経路の途中に設けられ且つ前記入射経路
にある反射戻り光を部分的に遮断する遮光板とが
搭載されており、前記反射戻り光の受光部による
受光出力によりピツクアツプと光デイスクとの相
対的な傾きが検知されるデイスク傾き検出装置に
おいて、前記遮光板の光デイスクに対向する面が
、反射面とされていることを特徴とするデイスク
傾き検出装置。 A light emitting section facing the optical disk, and a light receiving section into which reflected return light emitted from the light emitting section and reflected on the optical disk enters a pickup that faces the optical disk and plays back information recorded on the optical disk. A light-shielding plate is provided in the middle of an incident path through which the reflected return light enters the light receiving unit from the optical disk and partially blocks the reflected return light on the incident path, and the light shielding plate is installed to partially block the reflected return light on the incident path, A disk tilt detection device for detecting a relative tilt between a pick-up and an optical disk based on a light reception output by a section, wherein a surface of the light shielding plate facing the optical disk is a reflective surface. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9449489U JPH0337613U (en) | 1989-08-11 | 1989-08-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9449489U JPH0337613U (en) | 1989-08-11 | 1989-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0337613U true JPH0337613U (en) | 1991-04-11 |
Family
ID=31643819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9449489U Pending JPH0337613U (en) | 1989-08-11 | 1989-08-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0337613U (en) |
-
1989
- 1989-08-11 JP JP9449489U patent/JPH0337613U/ja active Pending
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