Patent ID: 9022579
Filing Date: 2015-05-05
Classification: H04N,H05B

Abstract:
1. A lighting circuit for a high-pressure discharge lamp, the lighting circuit being configured to light the high-pressure discharge lamp by supplying an alternating lamp current to the high-pressure discharge lamp, wherein the alternating lamp current comprises a base lamp current and pulse currents, each of the pulse currents has an output current greater than an output current of the base lamp current, at least one pulse current is superimposed on a former half of each half period of the base lamp current and at least two pulse currents are superimposed on a latter half of the each half period, and one of the at least one pulse current superimposed on the former half of the each half period is located in the beginning of the each half period while one of the at least two pulse currents superimposed on the latter half of the each half period is located in the end of the each half period.