Planar diffractive optical element lens and method for producing same

摘要

A planar diffractive optical element (DOE) lens is described herein. The planar DOE lens includes a substrate. The planar DOE lens further includes a first layer, the first layer being formed upon the substrate. The planar DOE lens further includes a diffractive optical element, the diffractive optical element being formed upon the first layer. The planar DOE lens further includes a second layer, the second layer being formed upon the first layer. The second layer is also formed over the diffractive optical element. The second layer encloses the diffractive optical element between the first layer and the second layer. The second layer includes a planar surface.

主权项

1. An optical sensor, comprising:
an array of photodiodes; a substrate disposed over the array of photodiodes; a first layer, the first layer being formed upon the substrate; a diffractive optical element, the diffractive optical element being formed upon the first layer; and a second layer formed of a dielectric material, the second layer being formed directly upon the first layer, the second layer being formed over the diffractive optical element, the second layer including a planar surface, wherein the second layer encloses the diffractive optical element between the first layer and the second layer, and wherein the first layer and the second layer include material with indexes of refraction selected to achieve an appropriate focus.