US 11,892,642 B2
Electronic apparatus
Li-Hsun Chang, Taoyuan (TW); Kuan-Ying Ou, Taoyuan (TW); and Qing-Long Deng, Taoyuan (TW)
Assigned to HTC Corporation, Taoyuan (TW)
Filed by HTC Corporation, Taoyuan (TW)
Filed on Oct. 4, 2019, as Appl. No. 16/592,763.
Claims priority of provisional application 62/741,551, filed on Oct. 5, 2018.
Prior Publication US 2020/0110270 A1, Apr. 9, 2020
Int. Cl. G02B 27/01 (2006.01); G02B 1/115 (2015.01); G02B 5/28 (2006.01)
CPC G02B 27/0176 (2013.01) [G02B 1/115 (2013.01); G02B 27/0101 (2013.01); G02B 27/0149 (2013.01); G02B 27/0172 (2013.01); A63F 2300/8082 (2013.01); G02B 5/281 (2013.01); G02B 2027/0178 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electronic apparatus, comprising:
a housing having a light transmission portion; and
a covering structure comprising a plurality of coating layers sequentially stacked above the light transmission portion, the coating layers respectively having different thicknesses, different refractive indices, different reflectivities, and different transmissivities, wherein the thickness of each of the coating layers is uniform and reflected lights respectively of the coating layers have respective phases, such that the reflected lights form interference fringes to present a virtual image with a pattern, wherein a source of the reflected lights is external to the housing, and the virtual image with the pattern formed by the reflected lights is presented external to the housing, wherein the covering structure is configured to transmit most of light in a wavelength range of infrared spectrum and not to transmit most of light in a wavelength range of visible spectrum.