THREE-DIMENSIONAL PRECISION TABLE (VERSIONS) Russian patent published in 2009 - IPC G12B5/00 G02B7/00 G02B21/26 

FIELD: physics, measurement.

SUBSTANCE: invention is related to facilities for alignment of optical elements. One pair is installed with the possibility of longitudinal displacement of single base in pair relative to the second one along two support balls, which are placed in guide slot arranged near edge of internal side on each base in this pair and created by two surfaces arranged at the angle below 90°, besides one surface of slot is parallel to plane of base. As the third point of support between bases on the edge opposite from support balls, thrust is installed, being fixed only on one of bases, or made in the form of single thrust ball. For longitudinal displacement of single base, pusher is installed relative to the second one. Two other pairs of bases are arranged with the possibility of declination from parallelism of single base in pair relative to the second one due to rotation of base around axis passing through centers of two support balls and parallel axis of longitudinal displacement of the first pair, besides bases in each pair contact between each other in three points of support, two of which are made by two support balls arranged on single edge of internal sides of bases pair, and the third point of support is made by pusher arranged on edge of bases pair internal sides opposite from support balls. Pusher may be arranged in the form of aligning screw or in the form of lever with two adjusting screws. Bases are spring-loaded relative to each other so that gaps are cleared between contact surfaces.

EFFECT: reduced dimensions and higher rigidity of structure, increase of sensitivity and accuracy of motions, simplified technology of manufacturing and assembly, which is provided by the fact that three-dimensional precision table comprises three pairs of parallel-arranged bases.

8 cl, 7 dwg