| 摘要 |
PCT No. PCT/EP83/00318 Sec. 371 Date Jul. 26, 1984 Sec. 102(e) Date Jul. 26, 1984 PCT Filed Nov. 29, 1983 PCT Pub. No. WO84/02200 PCT Pub. Date Jun. 7, 1984.A projection apparatus for transparencies has at least four projectors each including a projection lamp, a condensor and an objective and arranged to point at the same part of a picture screen. The projectors are offset from one another, the objectives and the condensors have axes which are transversely offset from one another so as to project on the picture screen pictures in register, the projection lamps are adjustable in their brightness independently of one another. A flat disc supports a plurality of transparencies with offset similar to the projectors and rotates about a central axis. The disc is subdivided into a plurality of substantially equal sectors each arranged for supporting a group of at least four transparencies to be associated with the four projectors. An objective support supports the objectives of the projectors with offset relative to one another; and a condensor support supports the condensors of the projectors with offset which is similar to the offset of the objectives. An elective drive drives the disc for supporting the transparencies. |
