| 摘要 |
There is provided an apparatus and method for automatically reading out the range as determined by dual image optical range finders. Such dual image optical range finders produce a pair of misaligned images when the set range of the range finder differs from the actual range of a distant object, and the images are superimposed or aligned when the set range and actual range correspond. Passing the projected image of the range finder through one or more moving slits to shutter the projected image will form image pulses, the separation of which represents the error between the set and actual range of the range finder. A light detector, such as photoelectric cells, converts the image pulses into electrical pulses and an electrical circuit system is provided to detect the differences between the conditions of exact image alignment and the alignment error.
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