| 摘要 |
The universal sphere mount provides a spherically mounted retro-reflector conical nest mount having a base, a body of lesser diameter than the base, and a precise nest in the body that receives a retro-reflector target. The body steps inwardly from the base or has bevel. The body has a lesser diameter than the base so the reflector achieves an orientation below a horizontal plane at any horizontal rotation upon the body. The nest receives a spherically mounted retro-reflector and positions it with high precision over the shank. The nest has at least three oblique clearance areas, equally spaced, that permit a maximum negative acceptance angle for incident light to a mounted spherically mounted retro-reflector without occlusion and at any angle of rotation upon the body. The universal sphere mount achieves tolerances, within 0.0005 inch of the centerline and of the height of a spherically mounted retro reflector placed therein.
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