LASER MIRROR Russian patent published in 2010 - IPC G02B5/08 

FIELD: physics.

SUBSTANCE: slits are made on the base of the mirror, which form elements in form of single-span beams with peripheral sections of the reflecting surface at opposite ends of the mirror. The ends of the beams are joined to the base by elastic supporting crosspieces lying at an acute angle to the optical axis of the mirror. The length of the beams, the length of the crosspieces and angle of inclination of the crosspieces are selected under the condition for conversion of thermal displacement of corresponding edges of the peripheral sections of the mirror into their translational displacement with a component which is unidirectional and comparable to the value of thermal deformation of the central part of the reflector.

EFFECT: provision for passive compensation for bending thermal deformation of the mirror when its radiation dose changes.

5 dwg