Abstract:
An electronic system includes a reflective film including a diffraction grating configured to reflect an image within a reflective grating spectra at a reflection angle; and an image capture unit positioned at a device orientation to capture the image reflected from the reflective film.
Abstract:
An electronic system includes a reflective film including a diffraction grating configured to reflect an image within a reflective grating spectra at a reflection angle; and an image capture unit positioned at a device orientation to capture the image reflected from the reflective film.