JPS603923U - Beam spot detection device - Google Patents
Beam spot detection deviceInfo
- Publication number
- JPS603923U JPS603923U JP9563583U JP9563583U JPS603923U JP S603923 U JPS603923 U JP S603923U JP 9563583 U JP9563583 U JP 9563583U JP 9563583 U JP9563583 U JP 9563583U JP S603923 U JPS603923 U JP S603923U
- Authority
- JP
- Japan
- Prior art keywords
- beam spot
- spot detection
- detection device
- knife
- incident light
- 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
Landscapes
- Optical Recording Or Reproduction (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図は一般の光学式読取装置の例を示す構成図、第２
図は第１図に用いる２分割光検出器の検出面の平面図、
第３図ａ、 ｂ、 ｃは第２図の検出面上でのスポ
ットの位置変化を示す平面図、第４図ａ、 ｂは第３
図における焦点位置より外れた状態を説明する光経路図
、第５図は本考案の実施例を示す構成図である。
図において、１・・・レーザ、２・・・レンズ、３・・
・ビームスプリッタ、４・・・集光レンズ、５・・・記
録媒体、６・・・収束レンズ、７・・・ナイフェツジ、
８・・・２分割光検出器、９・−・ネ感部分、１０．１
１・・・光検出面、１２．１３．１４・・・ビームスポ
ットである。Figure 1 is a configuration diagram showing an example of a general optical reading device;
The figure is a plan view of the detection surface of the two-split photodetector used in Figure 1;
Figures 3a, b, and c are plan views showing changes in the position of the spot on the detection surface in Figure 2, and Figures 4a and b are plan views showing the position changes of the spot on the detection surface in Figure 2.
An optical path diagram illustrating a state out of focus position in the figure, and FIG. 5 is a configuration diagram showing an embodiment of the present invention. In the figure, 1...laser, 2...lens, 3...
・Beam splitter, 4... Condensing lens, 5... Recording medium, 6... Converging lens, 7... Naifetsu,
8...2-split photodetector, 9...Ne sensitive part, 10.1
1... Photodetection surface, 12.13.14... Beam spot.
Claims (1)
のナイフェツジの方向と平行な線で分割された二個の検
出部によりそのナイフェツジを介した光ビームを受ける
二分割光検出器を備えるビームスポット検出装置におい
て、前記光検出器はその受光面が前記分割された方向と
直交する方向に入射光の光軸に対して傾斜に接置された
ことを特徴とするビームスポット検出装置。Beam spot detection comprising a knife that partially blocks an incident light beam, and a two-split photodetector that receives the light beam via the knife by two detection sections divided by a line parallel to the direction of the knife. The beam spot detection device, wherein the photodetector is arranged such that its light receiving surface is inclined to the optical axis of the incident light in a direction perpendicular to the divided direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9563583U JPS603923U (en) | 1983-06-21 | 1983-06-21 | Beam spot detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9563583U JPS603923U (en) | 1983-06-21 | 1983-06-21 | Beam spot detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS603923U true JPS603923U (en) | 1985-01-12 |
Family
ID=30228298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9563583U Pending JPS603923U (en) | 1983-06-21 | 1983-06-21 | Beam spot detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603923U (en) |
-
1983
- 1983-06-21 JP JP9563583U patent/JPS603923U/en active Pending
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