发明名称 Lamp unit for a projector and a process for the light control thereof
摘要 A lamp unit with a light control function for the light emitted from this lamp unit, for which a high pressure mercury lamp is used which is filled with at least 0.15 mg/mm3 mercury and which has a hermetically enclosing arrangement, an essentially hermetically enclosing arrangement or an arrangement in which there is a flow path for actively flowing cooling air within. The lamp unit for a projector has a high pressure mercury lamp of the short arc type with a wall load of at least 1 W/mm2 which is filled with at least 0.15 mg/mm3 mercury, a concave reflector which surrounds this mercury lamp, a front cover which covers the front opening of this concave reflector, a cooling arrangement which can be controlled with respect to its cooling intensity for cooling of the concave reflector and/or the mercury lamp and a control device by which the power of the mercury lamp can be changed, the cooling and the control device being made such that, by controlling the two, a value in the range of 1<(WxG/V) can be set, where V (in cm3) is the inside volume of the concave reflector, W (in W) is the rated power of the mercury lamp and G (in W/mm2) is the wall load. Furthermore, a process for light controlling such a lamp unit is given.
申请公布号 US2002017842(A1) 申请公布日期 2002.02.14
申请号 US20010915537 申请日期 2001.07.27
申请人 NARITA MITUO 发明人 NARITA MITUO
分类号 F21S2/00;F21V29/00;F21W101/14;F21Y101/00;H01J61/02;H01J61/20;H01J61/50;H01J61/52;H01J61/82;H01J61/86;(IPC1-7):H01J1/02 主分类号 F21S2/00
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