23 May 2011 Multi SLMs holographic display with inclined plane wave illumination
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Abstract
Holography can store full wide angle information about a registered object, since during registration process information about amplitude and phase of an optical wave scattered from an object is captured. Because of this unique feature people put hope in holography as the method which can be utilized in a 3D imaging display. In the paper we present the design of a wide viewing angle display system utilizing multiple Spatial Light Modulators (SLMs). The system is capable of displaying objects from both virtual and real worlds. In our system we are using phase only reflective SLMs based on liquid crystal on silicon (LCoS). There are designed to work with normal illumination. However in order to simplify an optomechanical system of the display here the SLMs are used with an inclined plane wave illumination. Therefore in the paper at first we focus on determination of a tilt depended SLM calibration, so thus SLM even with highly off axis inclined illumination is capable of an accurate wave reproduction. Then we focus on obtaining high quality reconstruction of objects from virtual world. We present an algorithm based on Gerchberg-Saxton scheme and diffraction computing between tilted and parallel planes. All of the paper discussions are accompanied with experimental results obtained in the multi SLMs display.
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Weronika Zaperty, Weronika Zaperty, Tomasz Kozacki, Tomasz Kozacki, Malgorzata Kujawińska, Malgorzata Kujawińska, "Multi SLMs holographic display with inclined plane wave illumination", Proc. SPIE 8083, Modeling Aspects in Optical Metrology III, 80830X (23 May 2011); doi: 10.1117/12.890132; https://doi.org/10.1117/12.890132
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