JPS5890537U - Optical information reproducing device using laser light source - Google Patents
Optical information reproducing device using laser light sourceInfo
- Publication number
- JPS5890537U JPS5890537U JP18544781U JP18544781U JPS5890537U JP S5890537 U JPS5890537 U JP S5890537U JP 18544781 U JP18544781 U JP 18544781U JP 18544781 U JP18544781 U JP 18544781U JP S5890537 U JPS5890537 U JP S5890537U
- Authority
- JP
- Japan
- Prior art keywords
- photoelectric element
- optical
- light source
- laser light
- reproducing device
- 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 title claims description 10
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の光学系の一実施例を示す図、第２図は
情報媒体上でのビームスポットとビットとの関係を示す
図、第３図は本考案の遮断効果と光ビームの光強度分布
の変化を説明するための図、第４図ａ乃至第４図Ｃは本
考案の差動型充電素子の各種実施例を示す図、第５図は
レーザー光の温度変化により生じる光強度分布の変化を
示す説明図、第６図ａ１第６図すは光ビームの光強度分
布の変化が差動型光電素子上のビームスポットの光量分
布に変化を与えることを示す説明図である。
２・・・・・・レーザー光、８・・・・・・情報媒体、
９・・曲情報媒体上のビームスポット、１２・・曲差動
型光電素子、１３・・・・・・差動型光電素子上のビー
ムスポット、１２ｅ、１４．１５・・・・・・制御信号
の無検出部。Fig. 1 is a diagram showing an embodiment of the optical system of the present invention, Fig. 2 is a diagram showing the relationship between the beam spot and the bit on the information medium, and Fig. 3 is a diagram showing the blocking effect of the present invention and the light beam Figures for explaining changes in light intensity distribution; Figures 4a to 4C are diagrams showing various embodiments of the differential charging element of the present invention; Figure 5 is a diagram for explaining changes in the temperature of laser light; FIG. 6 is an explanatory diagram showing changes in intensity distribution; FIG. . 2... Laser light, 8... Information medium,
9... Beam spot on the music information medium, 12... Musical differential photoelectric element, 13... Beam spot on the differential photoelectric element, 12e, 14.15... Control Non-detection part of signal.
Claims (1)
レーザー光２を光学系を介してビースポット９として集
束し、前記凹凸１５との光干渉による光回折効果にて生
じる光学的変化を差動型光電素子１２に入射して、情報
信号及び前記ビームスポット９の制御信号を検出する光
学的情報再生装置において、前記差動型光電素子１２を
照射するビームスポット１３の内、その中心部分が照射
する差動型光電素子１２部分に前記制御信号の無検出部
１２ｅ、１４．１５を設け、 てなるレーザー光源を
使用する光学的情報再生装置。 ２ 差動型光電素子１２に形成した情報信号検出専用の
光電素子１２ｅを前記無検出部とした実用新案登録請求
の範囲第１項記載のレーザー光源を使用する光学的情報
再生装置。 ３ 差動型光電素子１２に透孔１４あるいは光遮断部材
１５等の光無感応部分を設けて前記無検出部とした実用
新案登録請求の範囲第１項記載のレーザー光源を使用す
る光学的情報再生装置。[Claims for Utility Model Registration] '1 Information medium 8 on which information is recorded by unevenness 15,
The laser beam 2 is focused as a beam spot 9 through an optical system, and an optical change caused by the optical diffraction effect due to optical interference with the unevenness 15 is incident on the differential photoelectric element 12, thereby converting the information signal and the beam. In an optical information reproducing device that detects a control signal of a spot 9, a portion of the differential photoelectric element 12 illuminated by a central portion of the beam spot 13 that illuminates the differential photoelectric element 12 is free of the control signal. An optical information reproducing device that includes detection units 12e and 14.15 and uses a laser light source. 2. An optical information reproducing device using a laser light source according to claim 1, in which a photoelectric element 12e formed in a differential photoelectric element 12 and dedicated to information signal detection is used as the non-detecting part. 3 Optical information using the laser light source according to claim 1 registered as a utility model by providing a light-insensitive part such as a through hole 14 or a light blocking member 15 in the differential photoelectric element 12 to form the non-detection part playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18544781U JPS5890537U (en) | 1981-12-12 | 1981-12-12 | Optical information reproducing device using laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18544781U JPS5890537U (en) | 1981-12-12 | 1981-12-12 | Optical information reproducing device using laser light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5890537U true JPS5890537U (en) | 1983-06-18 |
Family
ID=29986506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18544781U Pending JPS5890537U (en) | 1981-12-12 | 1981-12-12 | Optical information reproducing device using laser light source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5890537U (en) |
-
1981
- 1981-12-12 JP JP18544781U patent/JPS5890537U/en active Pending
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