System and method for generating a light pattern for object illumination
AssigneeFacebook Technologies, LLC
InventorNadav Grossinger
Life of this patent
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Abstract
A light generator system may include: a light source providing a diverging light beam, a first lens element having a first surface and a second surface, the first surface of the first lens element having a positive optical power in a first cross section, a second lens element having a first surface and a second surface, the first surface of the second lens element having a negative optical power in a second cross section different from the first cross section, and a multiplication function on at least one of the second surface of the first lens element, the first surface of the second lens elements, or the second surface of the second lens element, in the first cross section.
Claims12
A light generator system for generating a light pattern in a X-, Y-, Z-axis Cartesian coordinate system, the light generator system comprising:
- a light source directed along the Z-axis;
- a first lens element having a first surface and a second surface, the first surface of the first lens element having a positive optical power in a first cross section, the first surface of the first lens facing the light source;
- a second lens element having a first surface and a second surface, the first surface of the second lens element having a negative optical power in a second cross section different from the first cross section, wherein the first lens is between the light source and the second lens, the first surface of the second lens facing the second surface of the first lens;
- and
- a multiplication function on a surface of a lens other than the first surface of the first lens element, the multiplication function in the first cross section.
Dependencies are inferred from the claim text.