TW200605006A - Device for detecting the energy of LED light sources and its feedback device - Google Patents
Device for detecting the energy of LED light sources and its feedback deviceInfo
- Publication number
- TW200605006A TW200605006A TW093121787A TW93121787A TW200605006A TW 200605006 A TW200605006 A TW 200605006A TW 093121787 A TW093121787 A TW 093121787A TW 93121787 A TW93121787 A TW 93121787A TW 200605006 A TW200605006 A TW 200605006A
- Authority
- TW
- Taiwan
- Prior art keywords
- energy
- led
- signal
- light sources
- current
- Prior art date
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
A device for detecting the energy of LED light sources and its feedback device are disclosed. In an LED assembly, the red LED group, the green LED group, and the blue LED group are individually series-connected to LED detectors whose output signal is transmitted to an optical detector to detect the energy of light sources. The energy of lights is detected and the signal is transformed into a current whose current value is adequate to the detected energy. A current transformer can transform the current into a voltage. A signal transformer can transform the analog voltage signal into a digital signal. A processor can compare and calculate the difference of the energy of the light sources to modulate the output voltage by using a driver to adjust the current and send a feedback signal to the LED assembly. When the LED assembly of a light source device is emitting lights, the detection and the feedback of the energy of the lights can be completely monitored, so the white balance of the light source of the LED assembly can be maintained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93121787A TWI285354B (en) | 2004-07-21 | 2004-07-21 | Device for detecting the energy of LED light sources and its feedback device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93121787A TWI285354B (en) | 2004-07-21 | 2004-07-21 | Device for detecting the energy of LED light sources and its feedback device |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200605006A true TW200605006A (en) | 2006-02-01 |
TWI285354B TWI285354B (en) | 2007-08-11 |
Family
ID=39456696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW93121787A TWI285354B (en) | 2004-07-21 | 2004-07-21 | Device for detecting the energy of LED light sources and its feedback device |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI285354B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI410714B (en) * | 2008-09-25 | 2013-10-01 | Au Optronics Corp | Side-type backlight module and operating method thereof |
-
2004
- 2004-07-21 TW TW93121787A patent/TWI285354B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI410714B (en) * | 2008-09-25 | 2013-10-01 | Au Optronics Corp | Side-type backlight module and operating method thereof |
Also Published As
Publication number | Publication date |
---|---|
TWI285354B (en) | 2007-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |