发明名称 |
Image projector with intensity-controlled light source |
摘要 |
A projection system for image representation includes a display, a lamp, and a sensor for generating a sensor signal for monitoring and compensating changes in the luminous flux provided by the lamp. To achieve a monitoring of the light quantity actually incident on the display, an optical component is arranged in a light path between the lamp and the display. The optical component allows a first light component to pass through and reflects a second light component such that one of the light components is directed at the display and the other light component is directed at the sensor arranged outside the light path. A sensor signal generated in this manner renders it possible to compensate for fluctuations in the luminous flux provided by the lamp through the control of a lamp driver in an effective.
|
申请公布号 |
US7273284(B2) |
申请公布日期 |
2007.09.25 |
申请号 |
US20050531016 |
申请日期 |
2005.04.12 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
DEPPE CARSTEN;MOENCH HOLGER |
分类号 |
G03B21/14;H04N9/31;H05B41/292 |
主分类号 |
G03B21/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|