TY - JOUR
T1 - On-axis near-eye display system based on directional scattering holographic waveguide and curved goggle
AU - Xiao, Jiasheng
AU - Liu, Juan
AU - Lv, Zhenlv
AU - Shi, Xueliang
AU - Han, Jian
N1 - Publisher Copyright:
© 2019 Optical Society of America.
PY - 2019/1/21
Y1 - 2019/1/21
N2 - The contradiction between the field of view (FOV), luminance uniformity (LU) and weight has always restricted the development of augmented reality display systems. An on-axis near-eye display (NED) system based on directional scattering holographic waveguide (DSHW) and curved goggle is proposed in order to realize a large FOV with high LU, light weight, and conformal design capability. The DSHW which consists of a linear volume holographic grating and holographic diffuser is used to deliver the virtual image and construct a transparent directional emission display screen with high LU. The curved goggle is used to project the image on the display screen into human eye and form a large FOV, with a suitable exit pupil diameter (EPD) and eye relief distance (ERF) and while keeping the external scene visible. Our proposed NED achieved an FOV of 44° horizontal (H) × 12° vertical (V) easily, which is almost consistent with the theoretical design. The EPD is 6 mm, ERF is 18.6 mm, and LU is about 88.09% at full viewing angle. The system is lightweight and flexible, which can be further applied in the next-generation, integrated protection-display helmet system through conformal optical design.
AB - The contradiction between the field of view (FOV), luminance uniformity (LU) and weight has always restricted the development of augmented reality display systems. An on-axis near-eye display (NED) system based on directional scattering holographic waveguide (DSHW) and curved goggle is proposed in order to realize a large FOV with high LU, light weight, and conformal design capability. The DSHW which consists of a linear volume holographic grating and holographic diffuser is used to deliver the virtual image and construct a transparent directional emission display screen with high LU. The curved goggle is used to project the image on the display screen into human eye and form a large FOV, with a suitable exit pupil diameter (EPD) and eye relief distance (ERF) and while keeping the external scene visible. Our proposed NED achieved an FOV of 44° horizontal (H) × 12° vertical (V) easily, which is almost consistent with the theoretical design. The EPD is 6 mm, ERF is 18.6 mm, and LU is about 88.09% at full viewing angle. The system is lightweight and flexible, which can be further applied in the next-generation, integrated protection-display helmet system through conformal optical design.
UR - http://www.scopus.com/inward/record.url?scp=85060114890&partnerID=8YFLogxK
U2 - 10.1364/OE.27.001683
DO - 10.1364/OE.27.001683
M3 - Article
C2 - 30696230
AN - SCOPUS:85060114890
SN - 1094-4087
VL - 27
SP - 1683
EP - 1692
JO - Optics Express
JF - Optics Express
IS - 2
ER -