| 摘要 |
A device for large screen projection with a projection lamp (1), an ima ge projection plane (3) and an objective lens (5), the projection lamp (1) directing a cone (7) of light through the image projection plane (3) and through the objective lens (5) and a projection lamp. To greatly increase the light output of such a device and such a projection lamp, it is provided that the projection lamp ( 1) contains two light sources (2, 4) which are arranged relative to one another such that the envelopes (6, 8) of the two partial cones (10, 12) of light which a re produced by the light sources (2, 4) and which feed a main cone of light (7) have at least one common envelope line (14).
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