JPH03112964U - - Google Patents
Info
- Publication number
- JPH03112964U JPH03112964U JP2190490U JP2190490U JPH03112964U JP H03112964 U JPH03112964 U JP H03112964U JP 2190490 U JP2190490 U JP 2190490U JP 2190490 U JP2190490 U JP 2190490U JP H03112964 U JPH03112964 U JP H03112964U
- Authority
- JP
- Japan
- Prior art keywords
- optical output
- semiconductor laser
- conductive pattern
- photoelectric conversion
- conversion element
- 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
- 239000004065 semiconductor Substances 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 3
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Structure Of Printed Boards (AREA)
Description
第１図はこの考案の一実施例における光出力安
定化回路用印刷基板と半導体レーザーとの接続を
示す要部斜視図、第２図イは印刷基板とフレキシ
ブル基板の接続部分の拡大図、第２図ロはフレキ
シブル基板の導電パターン部の拡大図、第３図は
光出力安定化回路図、第４図は従来の光出力安定
化回路用印刷基板と半導体レーザーとの接続を示
す要部斜視図である。
図において、１は半導体レーザー、２はレーザ
ー素子、３は光電変換素子、４は光出力安定化回
路、４ａは印刷基板、５は駆動電流、６はモニタ
電流、７は電気信号入力端子、８は可変抵抗器、
８ａは可変抵抗器の端子、９はトランジスタ、９
ａはベース端子、１２はフレキシブル基板、１３
ａ，１３ｂ，１４は導電パターン、１５はレジス
ト、１６はハンダである。なお、図中同一符号は
同一または相当部分を示す。
Fig. 1 is a perspective view of the main parts showing the connection between the printed circuit board for the optical output stabilization circuit and the semiconductor laser in one embodiment of this invention, Fig. 2 A is an enlarged view of the connection part between the printed board and the flexible board, and Fig. Figure 2B is an enlarged view of the conductive pattern part of the flexible board, Figure 3 is a diagram of the optical output stabilization circuit, and Figure 4 is a perspective view of the main parts showing the connection between the conventional printed circuit board for the optical output stabilization circuit and the semiconductor laser. It is a diagram. In the figure, 1 is a semiconductor laser, 2 is a laser element, 3 is a photoelectric conversion element, 4 is an optical output stabilization circuit, 4a is a printed circuit board, 5 is a drive current, 6 is a monitor current, 7 is an electric signal input terminal, 8 is a variable resistor,
8a is a terminal of a variable resistor, 9 is a transistor, 9
a is a base terminal, 12 is a flexible board, 13
A, 13b, and 14 are conductive patterns, 15 is a resist, and 16 is a solder. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
ーザーに内蔵した光電変換素子によつて検出し、
検出出力の変化を半導体レーザーの駆動電流に負
帰還して半導体レーザーの光出力を制御する光出
力安定化回路用印刷基板において、半導体レーザ
ーの光出力を設定する可変抵抗器に接続した導電
パターンと、光電変換素子の検出出力を増幅する
ドンジスタのベース端子に接続した導電パータン
との電気的接続を光電変換素子の検出出力を導く
フレキシブル基板の導電パターンを介して行うこ
とを特徴とする光出力安定化回路用印刷基板。 (2) 上記フレキシブル基板の導電パターンを、
電気的接続を行う部位において、一部分をレジス
トで覆つたことを特徴とする請求項(1)記載の光
出力安定化回路用印刷基板。[Scope of claim for utility model registration] (1) A part of the optical output of a semiconductor laser is detected by a photoelectric conversion element built into the semiconductor laser,
In a printed circuit board for an optical output stabilization circuit that controls the optical output of a semiconductor laser by negative feedback of changes in the detection output to the drive current of the semiconductor laser, a conductive pattern connected to a variable resistor that sets the optical output of the semiconductor laser is used. , an optical output stabilization device characterized in that electrical connection with a conductive pattern connected to the base terminal of a donjista that amplifies the detection output of the photoelectric conversion element is made via a conductive pattern of a flexible substrate that guides the detection output of the photoelectric conversion element. Printed circuit boards for chemical circuits. (2) The conductive pattern of the above flexible board,
2. The printed board for an optical output stabilizing circuit according to claim 1, wherein a portion of the printed circuit board for electrical connection is covered with a resist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2190490U JPH03112964U (en) | 1990-03-05 | 1990-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2190490U JPH03112964U (en) | 1990-03-05 | 1990-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03112964U true JPH03112964U (en) | 1991-11-19 |
Family
ID=31524934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2190490U Pending JPH03112964U (en) | 1990-03-05 | 1990-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03112964U (en) |
-
1990
- 1990-03-05 JP JP2190490U patent/JPH03112964U/ja active Pending
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