JPS5892747U - Temperature compensation circuit for semiconductor light emitting devices - Google Patents
Temperature compensation circuit for semiconductor light emitting devicesInfo
- Publication number
- JPS5892747U JPS5892747U JP1981186276U JP18627681U JPS5892747U JP S5892747 U JPS5892747 U JP S5892747U JP 1981186276 U JP1981186276 U JP 1981186276U JP 18627681 U JP18627681 U JP 18627681U JP S5892747 U JPS5892747 U JP S5892747U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- compensation circuit
- semiconductor light
- temperature compensation
- temperature
- 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.)
- Granted
Links
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図は定電流駆動における光出力の温度依存性を示す
図、第２図は定電圧駆動における光出力の温度依存性を
示す図、第３図は光出力と温度および駆動電流を示す図
、第４図は光出力と温度および駆動電圧を示す図、第５
図は回路定数の求め方を示す図、第６図Ａ及びＢは温度
補償回路の例、第７図は光出力の温度係数の設定法と回
路定数を示す図である。
ＲＴ：直列抵抗、Ｖｏ；直流電源、１０；発光素子、ｊ
３ １，４ １５ １，６ Ｌ７ １β
リ ２ρ噛ち％−１１Ｅ、汰 （Ｖ）
５
１ − ７３−（’、／ １゜ Ｖ
″。
１−３ １．４ １５ １，５ １．７ １．Ｂ
１−９ ２０鴫ぢ勾を反 （Ｖ）Figure 1 is a diagram showing the temperature dependence of optical output in constant current driving, Figure 2 is a diagram showing the temperature dependency of optical output in constant voltage driving, and Figure 3 is a diagram showing optical output, temperature, and drive current. , Figure 4 is a diagram showing optical output, temperature, and driving voltage, Figure 5 is a diagram showing optical output, temperature, and driving voltage.
6A and 6B are diagrams showing an example of a temperature compensation circuit, and FIG. 7 is a diagram showing a method of setting a temperature coefficient of optical output and circuit constants. RT: series resistance, Vo: DC power supply, 10: light emitting element, j
3 1,4 15 1,6 L7 1β
ri 2ρ bite%-11E, ta (V) 5 1 - 73-(', / 1゜ V
″. 1-3 1.4 15 1,5 1.7 1.B
1-9 20 ripples (V)
Claims (1)
て、該発光素子が制御可能な抵抗を介して制御可能な直
流電源に接続され、前記発光素子の近傍の温度を測定す
る手段と、発光素子の光出力を一定とする゛ごとく、測
定された温度に従って前記抵抗の値と前記直流電源の出
力電圧の値を出力する設定手段とが具備されることを特
徴とする、半導体発光素子の温度補償回路。In a temperature compensation circuit for a semiconductor light emitting element having a PN junction, the light emitting element is connected to a controllable DC power source via a controllable resistor, a means for measuring a temperature in the vicinity of the light emitting element, and a means for measuring the temperature in the vicinity of the light emitting element; A temperature compensation circuit for a semiconductor light emitting device, comprising a setting means for outputting the value of the resistance and the value of the output voltage of the DC power supply according to the measured temperature so as to keep the output constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981186276U JPS5892747U (en) | 1981-12-16 | 1981-12-16 | Temperature compensation circuit for semiconductor light emitting devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981186276U JPS5892747U (en) | 1981-12-16 | 1981-12-16 | Temperature compensation circuit for semiconductor light emitting devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5892747U true JPS5892747U (en) | 1983-06-23 |
| JPS6218068Y2 JPS6218068Y2 (en) | 1987-05-09 |
Family
ID=29988080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981186276U Granted JPS5892747U (en) | 1981-12-16 | 1981-12-16 | Temperature compensation circuit for semiconductor light emitting devices |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5892747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116481A (en) * | 2000-07-25 | 2002-04-19 | Fuji Photo Film Co Ltd | Stroboscopic device for camera, electronic camera and light emission head |
| JP2009042773A (en) * | 2000-07-25 | 2009-02-26 | Fujifilm Corp | Flash device of camera and electronic camera |
-
1981
- 1981-12-16 JP JP1981186276U patent/JPS5892747U/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116481A (en) * | 2000-07-25 | 2002-04-19 | Fuji Photo Film Co Ltd | Stroboscopic device for camera, electronic camera and light emission head |
| JP2009042773A (en) * | 2000-07-25 | 2009-02-26 | Fujifilm Corp | Flash device of camera and electronic camera |
| US8421910B2 (en) | 2000-07-25 | 2013-04-16 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US8634021B2 (en) | 2000-07-25 | 2014-01-21 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US8675124B2 (en) | 2000-07-25 | 2014-03-18 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US9479751B2 (en) | 2000-07-25 | 2016-10-25 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US10250863B2 (en) | 2000-07-25 | 2019-04-02 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
| US10326970B1 (en) | 2000-07-25 | 2019-06-18 | Fujifilm Corporation | Electronic flash, electronic camera and light emitting head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6218068Y2 (en) | 1987-05-09 |
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