| 摘要 |
A camera for reproducing prints or transparencies, known as a reprography camera, is provided with means to emit spots of light on the copy table of the camera. The light spots are produced first in the image platform by light guides which are exposed to a timed light source. A mirror reflects the spots through the lens to the copy table so that when the lens is focused, the longitudinal displacement of the lens will cause a corresponding displacement in the light spots. These light spots illuminate the copy table to show the respective size of a copy and also to indicate the proper position of the original.
|
