A method of holographic chromatic aberration compensation based on a liquid lens

In the color holographic display, the quality of reconstructed images are affected by chromatic aberration caused by different wavelengths of color lasers. Using the zoom feature of the liquid lens, a method of holographic chromatic aberration compensation based on a liquid lens is proposed. A liquid lens using the principle of electrowetting is developed. When the voltage applied to the liquid lens changes, the focal length changes accordingly. When three color lasers illuminate the corresponding holograms in turns, by keeping the focal length of the liquid lens change accordingly, three color reconstructed images can display in the same location clearly. The experimental results verify its feasibility.