发明授权
US08979275B2 Dual high-pressure discharge lamp projector with multi-waveform current generation for greater luminous flux change control and extended lamp life
有权
双高压放电灯投影机具有多波形电流产生，可实现更大的光通量变化控制和延长灯泡寿命
- 专利标题： Dual high-pressure discharge lamp projector with multi-waveform current generation for greater luminous flux change control and extended lamp life
- 专利标题（中）： 双高压放电灯投影机具有多波形电流产生，可实现更大的光通量变化控制和延长灯泡寿命
-
申请号： US13171205申请日： 2011-06-28
-
公开(公告)号： US08979275B2公开(公告)日： 2015-03-17
- 发明人: Jun Sakaguchi , Syunsuke Ono
- 申请人： Jun Sakaguchi , Syunsuke Ono
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 优先权： JP2010-171660 20100730
- 主分类号： G03B21/20
- IPC分类号： G03B21/20 ; G03B21/14
摘要：
The projector uses two lamps, which are high-pressure discharge lamps with the same rated power, as light sources. The projector includes: a first alternating-current generator configured to generate a lamp current to be supplied to one of the lamps, based on an input control signal; a second alternating-current generator configured to generate a lamp current to be supplied to the other lamp, based on an input control signal; and a controller configured to control the lamp currents to have a same period and to be out of phase, by inputting a control signal to each of the first and the second alternating-current generators.