| 摘要 |
The invention relates to an adjustment method, especially for adjusting optical or fibre optical components. Said method involves locally heating, in a defined manner, at least one first partial region of an adjustment region ( 106, 114 ) of an actuator ( 100, 200, 400 ), in such a way that compressive strains appear in at least one second partial region of the adjustment region of the actuator ( 100, 200, 400 ) as a result of the fact that said second partial region prevents the thermal expansion of the heated partial area. When the yielding point sigma<SUB>F </SUB>of the material of the partial region is achieved, said compressive strains lead to a plastic deformation of the heated partial region. The heated first partial region shrinks during the cooling process, triggering a defined geometry modification of the actuator ( 100, 200, 400 ) following the cooling process. Due to the fact that the at least one second partial region prevents the shrinking, tensile stresses appear in the previously heated first partial region and the compressive strains are frozen in the at least one second region. According to the invention, the regions of the actuator ( 100, 200, 300, 400 ), in which the tensile stresses or compressive strains are frozen following the cooling process, are brought to a critical temperature (T<SUB>k</SUB>) in relation to the operational temperature range of the actuator, after the cooling process, at least until the flow processes of the material at said critical temperature are largely completed. A second adjustment process is then carried out. The invention also relates to an actuator which is especially suitable for carrying out the inventive method, and an optical component comprising one such actuator.
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