Donald E. Vandenberg - Brockport NY Donald A. Jacques - Pittsford NY William E. Schaffer - Spencerport NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G02B 510 G02B 718
US Classification:
350611
Abstract:
A method for providing corrections of distortions of a mirror. Initial corrections may be provided through the use of active optics, to apply forces to the mirror to introduce deformations that cancel out the distortions. This action, in turn, may induce undesirable aberrations. The method of the invention provides steps for identifying, isolating and removing the induced undesirable aberrations, and computing new applied forces that cannot induce the undesirable aberrations.
Method For Correction Of Distortions Of An Imaging Device
William E. Schaffer - Webster NY Donald A. Jacques - Pittsford NY Donald E. Vandenberg - Brockport NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G02B 718
US Classification:
350611
Abstract:
A method for providing corrections of distortions of an imaging device. Initial corrections may be provided through the use of active optics, to apply forces to the imaging device, or to a compensator device in a common optical path with the imaging device, so as to introduce deformations that cancel out the distortions. This action, in turn, may induce undesirable, secondary aberrations. The method of the invention provides steps for identifying, isolating and removing the undesirable secondary aberrations, and computing new applied forces that cannot induce the secondary aberrations.
An airfoil for a gas turbine engine according to an example of the present disclosure includes, among other things, an airfoil section extending in a spanwise direction, extending between a leading edge and a trailing edge in a chordwise direction, and extending in a thickness direction between a pressure side and a suction side. The airfoil section has a main body and a first skin. The main body includes a plurality of ribs defining a plurality of internal channels. The first skin is attached to the main body to enclose the plurality of internal channels such that the main body and the first skin cooperate to define the pressure and suction sides. A damper has at least one layer of damping material sandwiched between the first skin and the plurality of ribs. A method of forming a gas turbine engine component is also disclosed.