Lighting device, and luminaire
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 11, 2018
Grant Date -
Feb 1, 2018
app pub date -
Jul 15, 2017
filing date -
Jul 26, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A constant current is configured to control an FET to adjust a drain current so that a detection voltage is equal to a reference voltage. A reference setter is configured to set the reference voltage to a sum of a first voltage and a second voltage. The first voltage is equal to a voltage developing across the detection resistor while a current, which has a same magnitude as a current supplied to the light source so that a current dimming level of the light source is equal to the dimming instruction value, flows through the detection resistor. The second voltage is equal to a voltage developing across the detection resistor while a second current, which has a same magnitude as a current flowing through the limiting resistor while the light source is on, flows through the detection resistor.
First Claim
Other Claims data not available
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H05B Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 11, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 11, 2030 |
