Abstract: A steering wheel for a motor vehicle includes first and second operator control elements. The first operator control element is for selecting a main function from amongst at least two main function alternatives using an integrated first display for displaying the main function alternatives comprising a first operating device for cycling through the main function alternatives displayed on the first display. The second operator control element is for selecting a subfunction from amongst at least two subfunction alternatives using an integrated second display for displaying the subfunction alternatives comprising a second operating device for cycling through or changing the subfunction alternatives which can be displayed on the second display. The subfunction alternatives selectable by the second operator control element and displayable by the second display are prespecified depending on the main function selected using the first operator control element.

Abstract: A method of determination of a property of an optical device under test includes using a first initial coherent light beam, changing a first initial property of the first initial light beam, coupling the first initial light beam to the device under test, detecting a first signal of the first initial light beam received from the device under test, and correcting any a non-linearity in the first signal by interpolating the first signal on a linear scale.

Abstract: A method of determination of a property of an optical device under test, comprising the steps of: using a first initial coherent light beam, changing a first initial property of the first initial light beam, coupling the first initial light beam to the device under test, detecting a first signal of the first initial light beam received from the device under test, correcting any a non-linearity in the first signal by interpolating the first signal on a linear scale.