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Focus adjusting pancharatnam berry phase liquid crystal lenses in a head-mounted display
Focus adjusting pancharatnam berry phase liquid crystal lenses in a head-mounted display
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机译:焦点调整Pancharatnam Berry相液晶透镜在头戴式显示器中
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摘要
A varifocal block includes, in optical series, a switchable half waveplate (SHWP) and a plurality of liquid crystal (LC) lenses. The SHWP outputs circularly polarized light, and a handedness of the circularly polarized light is controlled by the SHWP being in an active state or a non-active state. Each LC lens of the plurality of LC lenses has a plurality of optical states, the plurality of optical states including an additive state that adds optical power to the LC lens and a subtractive state that removes optical power from the LC lens. The plurality of optical states of each of the plurality of the LC lenses compounded in optical series provides a range of adjustment of optical power for the varifocal block.
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