Abstract
We propose a full-color see-through three-dimensional (3D) display method based on volume holography. This method is based on real object interference, avoiding the device limitation of spatial light modulator (SLM). The volume holography has a slim and compact structure, which realizes 3D display through one single layer of photopolymer. We analyzed the recording mechanism of volume holographic gratings, diffraction characteristics, and influencing factors of refractive index modulation through Kogelnik’s coupled-wave theory and the monomer diffusion model of photopolymer. We built a multiplexing full-color reflective volume holographic recording optical system and conducted simultaneous exposure experiment. Under the illumination of white light, full-color 3D image can be reconstructed. Experimental results show that the average diffraction efficiency is about 53%, and the grating fringe pitch is less than 0.3 μm. The reconstructed image of volume holography has high diffraction efficiency, high resolution, strong stereo perception, and large observing angle, which provides a technical reference for augmented reality.
Highlights
We propose a full-color see-through 3D display method based on volume holography
As the volume hologram selectivity, has wavelength selectivity, light with a wavelength band that deviates from the recording wavelength willwavelength experience the illuminated light with a wavelength band that deviates from the recording awill sharp drop in diffraction efficiency
According to the principle of three primary colors, most monomatic lights can be synthesized in different proportions with the three primary colors of chromatic lights can be synthesized in different proportions with the three primary colors
Summary
Large perspective and full-color display are important technical difficulties for current holographic display In response to these problems, many researchers have proposed different. Seung-Ho Shin et al [9] proposed a coherent 3D display method through optical refraction volume holographic storage and integral imaging, which effectively reduces speckle noise. Mei-lan Piao et al [14] proposed a full-color holographic diffuser with time-sharing and iterative exposure This method is based on the wavelength multiplexing characteristics of volume holographic gratings. We propose a full-color see-through 3D display method based on volume holography. The reconstructed image of volume holography has high resolution, strong stereoscopic effect and large observing angle, and realizes full-color 3D display.
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