Target object for automated measuring instruments
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United States of America Patent
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Issued Date -
Oct 10, 2002
app pub date -
Mar 22, 2002
filing date -
Mar 23, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a target object (100) according to the invention, eight triple prisms (1, 2, 5, 6) are arranged in the form of two pyramids which are oriented with their base surfaces to one another. The triple prisms (1, 2, 5, 6) are aligned in such a way that, in the position of use, on the one hand optical beams from a predetermined range of vertical directions (v) above or below a horizontal plane (h), in any desired azimuthal alignment (a) of the target object (100) are continuously triple-reflected with high intensity and, on the other hand, abrupt, interfering reflections are as far as possible avoided. This is effected by alignment, according to the invention, of the reflective surfaces of the eight triple prisms (1, 2, 5, 6) of the target object parallel or perpendiucular to the horizontal plane (h). Consequently, the interfering reflections can be minimized in the relevant directional operating range of the target objects.
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