Lens having light transmissive portion and optic shield portion

摘要

A lighting assembly includes a light source and a lens. The lens includes a light transmissive portion and an optic shield portion for blocking or redirecting at least a portion of light generated by the light source. The light source can include one or more light emitting diodes (LEDs). The optic shield can be painted on or otherwise applied to a portion of the lens. Alternatively, it can be integrally formed with the lens. The optic shield can be an opaque material for blocking light generated by the light source or can be a reflective material for reflecting light generated by the light source through the light transmissive portion of the lens. Methods for making an optic shield are also described.

主权项

1. A method for forming a lens for a lighting assembly, wherein the lens comprises an outer surface, an inner surface defining a cavity, a light transmissive portion, and an optic shield portion, the method comprising:
co-molding a first thermoplastic material and a second thermoplastic material different from the first thermoplastic material to form the lens, wherein: (i) the first thermoplastic material forms the light transmissive portion and the second thermoplastic material forms the optic shield portion; (ii) the cavity comprises a central axis that lies within an imaginary plane; (iii) the imaginary plane divides the lens into a first portion and a second portion; (iv) the optic shield portion is located in only one of the first portion and the second portion of the lens; and (iv) the optic shield portion blocks light that impinges on the optic shield portion from passing through the optic shield portion of the lens.