JPS62113419U - - Google Patents
Info
- Publication number
- JPS62113419U JPS62113419U JP20394085U JP20394085U JPS62113419U JP S62113419 U JPS62113419 U JP S62113419U JP 20394085 U JP20394085 U JP 20394085U JP 20394085 U JP20394085 U JP 20394085U JP S62113419 U JPS62113419 U JP S62113419U
- Authority
- JP
- Japan
- Prior art keywords
- photodetector
- laser light
- optical
- utility
- model registration
- 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 10
- 238000007493 shaping process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本案を適用した光学ヘツドの光学系を
示す構成図、第２図は本案に係る他の実施例を示
す光学系の部分構成図である。
２０…集束凸レンズ、２１…ＰＩＮ光センサ、
２２…ＡＰＣ回路、１０…半導体レーザ、１１…
対物レンズ、１２…コリメータレンズ、１３…ア
ナモルフイツクバイプリズム、１４…ハーフミラ
ー、１５…光検出系、Ｄ…デイスク。
FIG. 1 is a block diagram showing the optical system of an optical head to which the present invention is applied, and FIG. 2 is a partial block diagram of the optical system showing another embodiment according to the present invention. 20...Focusing convex lens, 21...PIN optical sensor,
22...APC circuit, 10...semiconductor laser, 11...
Objective lens, 12... Collimator lens, 13... Anamorphic biprism, 14... Half mirror, 15... Photo detection system, D... Disk.
Claims (1)
部品を選択し、往路時における当該部品からのレ
ーザ光の光路外への漏れ方向に光検出器を配設し
、この光検出器からの信号に基づいてレーザ光源
の自動出力制御を行うようにしたことを特徴とす
る光学ヘツド。 (2) レーザ光源から出射されたレーザ光の往路
上に配設されたビームスプリツタの光漏れ方向に
前記光検出器を配設したことを特徴とする実用新
案登録請求の範囲第(1)項記載の光学ヘツド。 (3) レーザ光の往路上に設けられたビーム成形
用プリズムの表面反射方向に前記光検出器を配設
したことを特徴とする実用新案登録請求の範囲第
(1)項記載の光学ヘツド。[Scope of Claim for Utility Model Registration] (1) Select one of the optical components constituting the optical system, and place a photodetector in the direction in which the laser light from the component leaks out of the optical path during the outgoing journey. 1. An optical head characterized in that the output of a laser light source is automatically controlled based on a signal from the photodetector. (2) Utility model registration claim No. (1) characterized in that the photodetector is disposed in the light leakage direction of a beam splitter disposed on the forward path of the laser light emitted from the laser light source. Optical head as described in section. (3) Utility model registration claim No. 1, characterized in that the photodetector is disposed in the surface reflection direction of a beam shaping prism provided on the forward path of the laser beam.
The optical head described in (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20394085U JPS62113419U (en) | 1985-12-28 | 1985-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20394085U JPS62113419U (en) | 1985-12-28 | 1985-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62113419U true JPS62113419U (en) | 1987-07-18 |
Family
ID=31169741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20394085U Pending JPS62113419U (en) | 1985-12-28 | 1985-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62113419U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200953A (en) * | 1981-06-02 | 1982-12-09 | Toshiba Corp | Optical record carrier reader |
-
1985
- 1985-12-28 JP JP20394085U patent/JPS62113419U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200953A (en) * | 1981-06-02 | 1982-12-09 | Toshiba Corp | Optical record carrier reader |
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