US 11,960,106 B2
Augmented reality device, notebook, and smart glasses
Yi-Jung Chiu, New Taipei (TW); Wei-Kuo Shih, New Taipei (TW); and Shih-Ting Huang, New Taipei (TW)
Assigned to Acer Incorporated, New Taipei (TW)
Filed by Acer Incorporated, New Taipei (TW)
Filed on Dec. 31, 2019, as Appl. No. 16/731,057.
Claims priority of application No. 108100256 (TW), filed on Jan. 3, 2019.
Prior Publication US 2020/0218085 A1, Jul. 9, 2020
Int. Cl. G02B 30/56 (2020.01); G03H 1/22 (2006.01); G06F 1/16 (2006.01)
CPC G02B 30/56 (2020.01) [G03H 1/2294 (2013.01); G06F 1/1607 (2013.01); G06F 1/1616 (2013.01); G06F 1/1684 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An augmented reality (AR) device comprising:
a laser source providing a coherent laser ray with a single wavelength;
a spatial light modulator providing a diffraction pattern, wherein when the spatial light modulator receives the coherent laser ray, the diffraction pattern diffracts the coherent laser ray as a hologram in response to the coherent laser ray; and
a hologram optical element comprises a surface providing a concave mirror effect merely in response to the single wavelength of the coherent laser ray, wherein the surface of the hologram optical element is provided with a grating that solely corresponds to the single wavelength of the coherent laser ray, and the hologram optical element receives the hologram and magnifies the hologram to provide a stereoscopic virtual image, wherein upon the coherent laser ray with the single wavelength incident on the surface or the grating, the grating only reflects the coherent laser ray with the single wavelength and does not reflect lights with other wavelengths.