Proceedings PaperVisible And Near Infrared HOE's Example Of Geometrical And Chromatic Aberrations In The Case Of An Off-Axis Mirror
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Geometrical and chromatic aberrations of a .specific off-axis holographic mirror are described. This element, basically a collimator, can be made for use in the visible or in the near infrared. A major problem is to avoid or reduce aberrations that result from the shift between the wavelength of reconstruction and recording for a given off-axis reconstruction angle. Holographic recording with an aspheric wave created by a computer generated hologram is presented in an example. The development is made for a collimator in the visible, as used in a Head-Up-Display (HUD), but the given considerations remain valid for an infrared case.