Masked double-sided optical sheet lighting assembly

A lighting assembly for a vehicle, comprising:

• an array of light-emitting diodes;
• an optical sheet oriented to receive light emitted directly from the array of light-emitting diodes;
• a first pattern of light-modifying elements disposed on a first side of the optical sheet, wherein the first pattern of light-modifying elements comprises a first parallel array of convex lenses aligned lengthwise in a first direction;
• a second pattern of light-modifying elements disposed on a second side of the optical sheet opposite the first side, wherein the second pattern of light-modifying elements comprises a second parallel array of convex lenses aligned lengthwise in a second direction which is distinct from the first direction;
• an offset angle between the first direction and the second direction configured to distribute light emitted from the array of light-emitting diodes such that light emitted from the lighting assembly appears homogeneous;
• and
• a first mask printed directly on one side of the optical sheet for blocking or filtering light through a portion of the optical sheet thereby providing a custom lit appearance of the lighting assembly,
• wherein:
• the first mask comprises one or more continuous portions printed directly onto and across one or more subsets of the light-modifying elements, in a custom pattern;
• the one or more continuous portions of the first mask conform to the shape of and span the entire width of at least some of the light-modifying elements within the one or more subsets;
• and
• the pattern is selected, from amongst a plurality of possible custom patterns, to create the custom lit appearance of the lighting assembly by the mask's coverage of the one or more subsets of light-modifying elements.