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20 August 2013A green-color portable waveguide eyewear display system
Waveguide display systems are widely used in various display fields, especially in head mounted display. Comparing
with the traditional head mounted display system, this device dramatically reduce the size and mass. However, there are
still several fatal problems such as high scatting, the cumbersome design and chromatic aberration that should be solved.
We designed and fabricated a monochromatic portable eyewear display system consist of a comfortable eyewear device
and waveguide system with two holographic gratings located on the substrate symmetrically. We record the gratings on
the photopolymer medium with high efficiency and wavelength sensitivity. The light emitting from the micro-display is
diffracted by the grating and trapped in the glass substrate by total internal reflection. The relationship between the
diffraction efficiency and exposure value is studied and analyzed, and we fabricated the gratings with appropriate
diffraction efficiency in a optimization condition. To avoid the disturbance of the stray light, we optimize the waveguide
system numerically and perform the optical experiments. With this system, people can both see through the waveguide to
obtain the information outside and catch the information from the micro display. After considering the human body
engineering and industrial production, we design the structure in a compact and portable way. It has the advantage of
small-type configuration and economic acceptable. It is believe that this kind of planar waveguide system is a potentially
replaceable choice for the portable devices in future mobile communications.
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Lingbo Xia, Ke Xu, Zhengming Wu, Yingtian Hu, Zhenzhen Li, Yongtian Wang, Juan Liu, "A green-color portable waveguide eyewear display system
," Proc. SPIE 8913, International Symposium on Photoelectronic Detection and Imaging 2013: Optical Storage and Display Technology, 89130W (20 August 2013); https://doi.org/10.1117/12.2034767