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Apparatus for Making Optical Projections by Reflection from the Front-side of Drawings, Printings, Corporal Objects, and the like.
Apparatus for Making Optical Projections by Reflection from the Front-side of Drawings, Printings, Corporal Objects, and the like.
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机译:用于从图纸,印刷品,物体等的正面通过反射进行光学投影的设备。
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摘要
28,556. Zimmerhackel, C. Dec. 29. Magic-lantern apparatus.-Fig. 1 shows in section an arrangement for projecting on to a screen images of opaque objects. The object k to be projected is placed in a box p so as to be illuminated by a lamp f and condenser h. The projecting lens is shown at m. The box p and the condenser h can be turned through a right-angle to project on to a vertical screen.
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