8 February 2018 Holographic zoom system based on spatial light modulator and liquid device
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Abstract
In this paper, two holographic zoom systems are proposed based on the programmability of spatial light modulator (SLM) and zoom characteristics of liquid lens. An active optical zoom system is proposed in which the zoom module is composed of a liquid lens and an SLM. By controlling the focal lengths of the liquid lens and the encoded digital lens on the SLM, we can change the magnification of an image without mechanical moving parts and keep the output plane stationary. Then a color holographic zoom system based on a liquid lens is proposed. The system processes the color separation of the original object for red, green, and blue components and generated three holograms respectively. A new hologram with specific reconstructed distance can be generated by combing the hologram of the digital lens with the hologram of the image. By controlling the focal lengths of the liquid lens and the encoded digital lens on the SLM, we can change the magnification of the reconstructed image.
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Di Wang, Di Wang, Lei Li, Lei Li, Su-Juan Liu, Su-Juan Liu, Qiong-Hua Wang, Qiong-Hua Wang, } "Holographic zoom system based on spatial light modulator and liquid device", Proc. SPIE 10555, Emerging Liquid Crystal Technologies XIII, 1055505 (8 February 2018); doi: 10.1117/12.2297074; https://doi.org/10.1117/12.2297074
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