Patent ID: 9448364
Filing Date: 2016-09-20
CPC Classification: G02B

Claim Text:
1. An optical waveguide lens configured for converging light emitted from a light source, comprising: a substrate; a planar waveguide and a media grating formed on the substrate in sequence; the media grating comprising a first group of gratings located adjacent to the light source and a second group of gratings away from the light source, the first group of gratings and the second group of gratings each comprising a plurality of strip-shaped films arranged in parallel and spaced from each other; and the first group of gratings and the planar waveguide under the first group of gratings cooperatively defining a first waveguide section, the second group of gratings and the planar waveguide under the second group of gratings cooperatively defining a second waveguide section; wherein light radiated from the light source passes through the optical waveguide lens and is successively converged by the first waveguide section and the second waveguide section; wherein a coordinate system “oxy” is established, the origin “o” denotes an intersecting point of the optical axis of the light source and a widthwise direction of the planar waveguide, “x” axis denotes the widthwise direction of the planar waveguide, “y” axis denotes a phase difference with respect to incident light incident on the media grating in a direction inclined from the normal direction, and boundary of each strip-shaped film is set to conform following conditions:  and wherein x