OPTICAL SYSTEM WITH TEMPERATURE COMPENSATION OF FOCUSING Russian patent published in 2009 - IPC G02B7/02 

FIELD: physics, optics.

SUBSTANCE: invention is related to optical instrument-making and may be used in devices for reception and focusing of optical radiation in conditions of signification changes of ambient temperature. In optical system containing at least one lens with frame installed with the possibility of shift along optical axis in relation to casing, and unit of temperature compensation that is fixed between frame and casing and comprises compensation element made from material with linear expansion coefficient that differs from casing material and is installed parallel to optical axis, unit of temperature compensation is arranged in the form of pivot mechanism that contains yoke, elastic element and clamp, at that compensation element is rigidly fixed to casing with its one end, and with the other end it is pivotally connected to the first arm of yoke, which is installed with the possibility of rolling in relation to the first cam provided on casing, the second arm of yoke is joined by means of clamp to the second cam made on frame and installed diametrically opposite to the first one, and is connected through elastic element to casing.

EFFECT: provision of temperature compensation at high defocusing of optical system.

4 cl, 1 dwg