| 摘要 |
PCT No. PCT/EP89/01559 Sec. 371 Date Nov. 6, 1990 Sec. 102(e) Date Nov. 6, 1990 PCT Filed Dec. 18, 1989 PCT Pub. No. WO90/07728 PCT Pub. Date Jul. 12, 1990.A measuring instrument for the point-by-point measuring of color originals to be copied for the determination of exposure data, in which the original is illuminated by a condenser light source by way of a Fresnel lens and by means of an objective is imaged over the whole surface on a measuring plane in which a photodiode line can be moved in a straight line over the measuring surface. The movement of the photodiode line over the original image takes place step-by-step by means of a step motor, light measuring signals being created in the individual diodes which each can be assigned to a certain measuring point on the original. The sensing takes place sequentially for the basic colors red, green and blue, in which case one color filter respectively of the corresponding color is introduced into the path of the measuring rays. From the large number of measuring values, the exposure data are computed according to a predetermined algorithm.
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