Patent ID: 9110349
Filing Date: 2015-08-18
Classification: G02B,G02F

Abstract:
1. A waveguide lens, comprising: a substrate; a planar waveguide formed on the substrate and used for coupling with a laser light source which emits a laser beam having a divergent angle into the planar waveguide; a media grating formed on the planar waveguide and arranged along a direction that is substantially parallel with an optical axis of the laser beam; a modulating electrode positioned on and covering the media grating; and two ground electrodes positioned on the substrate and arranged at two opposite sides of the media grating, the modulating electrode and the ground electrodes being configured to change an effective refractive index of the planar waveguide, utilizing electro-optical effect, when a modulating electric field is applied thereto, and to change an effective focal length of the waveguide lens.