Patent ID: 11892642
Assignee: HTC CORPORATION
Field: Optics (Instruments)
Classification: CPC G  A | IPC G

Claim 0:
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.