Curved thin see-through lightguide with large eyebox
Реферат: A display system includes a microdisplay and a curved lightguide to direct and magnify light from the microdisplay to a user's eye. The display system includes an incoupler that is thicker than the curved lightguide to couple light from the microdisplay into the curved lightguide and an outcoupler tilted at an angle to receive two bounces of display light and couple the display light out of the curved lightguide, resulting in a large eyebox. In some embodiments, the curved lightguide includes a low-index coating on a world-side surface with a gap through which side image light escapes and a sunglass coating on a lens to absorb the side image light. The curved lightguide includes a half-wave plate (HWP) to flip an input polarization for a main image to an orthogonal polarization and a dielectric mirror to act as a weak analyzer to dim side images.
Curved thin see-through lightguide with large eyebox
Номер патента: WO2023086269A3. Автор: Ozan Cakmakci. Владелец: Google LLC. Дата публикации: 2023-08-03.