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OPTICAL SYSTEMS INCLUDING LIGHT-GUIDE OPTICAL ELEMENTS WITH TWO-DIMENSIONAL EXPANSION
OPTICAL SYSTEMS INCLUDING LIGHT-GUIDE OPTICAL ELEMENTS WITH TWO-DIMENSIONAL EXPANSION
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机译:光学系统包括具有二维膨胀的光导光学元件
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摘要
An optical system provides two-stage expansion of an input optical aperture for a display based on a light-guide optical element, A first expansion is achieved using two distinct sets of mutually-parallel partially-reflecting surfaces, each set handing a different part of an overall field- of-view presented to the eye. In some cases, a single image projector provides image illumination to two sets of facets that are integrated into the LOE. In other cases, two separate projectors deliver image illumination corresponding to two different parts of the field-of-view to their respective sets of facets.
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