JPS6232348U - - Google Patents
Info
- Publication number
- JPS6232348U JPS6232348U JP12329485U JP12329485U JPS6232348U JP S6232348 U JPS6232348 U JP S6232348U JP 12329485 U JP12329485 U JP 12329485U JP 12329485 U JP12329485 U JP 12329485U JP S6232348 U JPS6232348 U JP S6232348U
- Authority
- JP
- Japan
- Prior art keywords
- photoelectric conversion
- semiconductor laser
- circuit
- area
- determining
- 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
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 3
- 230000003287 optical effect Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Description
第１図は本案装置の模式図、第２図はその要部
たる複合フオトダイオードの平面図、第３図は同
断面構造図、第４図は複合フオトダイオードの他
の実施例を示す平面図、第５，６図は従来技術の
説明図である。
１…半導体レーザ装置、２，３…複合フオトダ
イオード、２１，３１…大面積のフオトダイオー
ド、２２，２３，３２，３３…小面積のフオトダ
イオード、２４…加算回路、２５，２６…比較回
路。
Fig. 1 is a schematic diagram of the proposed device, Fig. 2 is a plan view of a compound photodiode which is the main part thereof, Fig. 3 is a cross-sectional structural view of the same, and Fig. 4 is a plan view showing another embodiment of the compound photodiode. , 5 and 6 are explanatory diagrams of the prior art. DESCRIPTION OF SYMBOLS 1... Semiconductor laser device, 2, 3... Compound photodiode, 21, 31... Large area photodiode, 22, 23, 32, 33... Small area photodiode, 24... Addition circuit, 25, 26... Comparison circuit.
Claims (1)
する、１又は複数の小面積の第１光電変換素子と
、前記光の残部の殆ど総てを受光する大面積の第
２光電変換素子と、第１、第２光電変換素子の出
力の和を求める回路と、同じく差を求める回路と
を具備することを特徴とする半導体レーザの光学
特性測定装置。 one or more small-area first photoelectric conversion elements that receive a portion of the light emitted by a semiconductor laser in one direction; and a large-area second photoelectric conversion element that receives almost all of the remaining light; A device for measuring optical characteristics of a semiconductor laser, comprising a circuit for determining the sum of outputs of first and second photoelectric conversion elements, and a circuit for similarly determining the difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12329485U JPS6232348U (en) | 1985-08-09 | 1985-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12329485U JPS6232348U (en) | 1985-08-09 | 1985-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6232348U true JPS6232348U (en) | 1987-02-26 |
Family
ID=31014264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12329485U Pending JPS6232348U (en) | 1985-08-09 | 1985-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6232348U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109461A (en) * | 1978-02-15 | 1979-08-28 | Canon Inc | Testing method of directive light source |
| JPS6013479B2 (en) * | 1978-12-20 | 1985-04-08 | 株式会社日立製作所 | How to set substitute values for local output detector |
-
1985
- 1985-08-09 JP JP12329485U patent/JPS6232348U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109461A (en) * | 1978-02-15 | 1979-08-28 | Canon Inc | Testing method of directive light source |
| JPS6013479B2 (en) * | 1978-12-20 | 1985-04-08 | 株式会社日立製作所 | How to set substitute values for local output detector |
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