Patent ID: 9482842
Filing Date: 2016-11-01
CPC Classification: G02B

Claim Text:
1. Thermally compensated optical assembly comprising a monolithic mount with a thermal expansion coefficient, which mount is divided by slits into a mounting ring and at least three elastic links, and an optical element with a thermal expansion coefficient that is not the same as the thermal expansion coefficient of the mount, which optical element is connected to the links at a connection point in each instance, wherein the elastic links are constructed such that they compensate through deformation thermal expansion differences between the mount and the optical element within a temperature range from a lower threshold temperature to an upper threshold temperature, wherein the deformation in each instance generates a temperature-dependent reaction force with an amount and an operative direction in the connection points, characterized in that the quantity of compensation elements is equal to the quantity of links, wherein the compensation elements comprise in each instance an expansion body with a longitudinal axis and a spring element acting in direction of the longitudinal axis, and the expansion body contacts the mounting ring in each instance and the spring element contacts one of the links in each instance, wherein the links and the spring elements are relaxed at one of the threshold temperatures such that the reaction force acts over the entire temperature range in a same direction, and the expansion body and the spring element are configured in such a way with respect to their dimensioning and their thermal expansion coefficients that the compensation elements cause a temperature-dependent compensating force which brings about a counterforce at the connection points which counteracts the reaction force.