DEVICE FOR ADJUSTING OPTICAL DEVICES Russian patent published in 2006 - IPC G02B7/00 

FIELD: optical-mechanical instrument engineering.

SUBSTANCE: device for adjusting optical devices has internal and external cases, adjusting screws with heads mounted in external case and springs which have one ends attached to internal case and with other ends fixed in external case. Front side of internal case is connected along vertical line with front side of external case by means of flat spring made in form of plate. Plane of spring is perpendicular to longitudinal horizontal axis of optical device. Back sides of side surfaces of internal case have to flat and adjusting and they are disposed at angle to each other in such a manner that vertex of angle turns to internal case and is disposed at vertical line. Adjusting screws rest with their ends against adjusting surfaces through flat washers and are mounted in perpendicular to adjusting surfaces. Any end of any adjusting screw is made in form of spherical journal which has diameter to be bigger than diameter of washer's hole. Adjusting surfaces relate to friction coefficient as sin α<2k, where k is dry friction coefficient between washer of adjusting screw and adjusting screw and α is angle between adjusting surfaces. Springs are made tightening with total strength of F directed along bisector of α angle. Springs are fixed at back sides of internal and external cases. Strength of springs should meet the relation of F ≥a sin α/k - (M/2)g·cosθ, where C is coefficient of elasticity of plate at the direction of axis of case, M is weight of internal case, g is free fall acceleration, a is maximal amplitude of oscillation of the device and θ is angle between gravity vector applied to center of mass of internal case and bisector of α angle.

EFFECT: improved precision; higher resistance to influence of mechanical and climatic factors.

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