Snap fit optical device for a lighting device

A lighting system comprising:

• a lighting device comprising one or more attachment elements on a lens of the lighting device, the attachment elements each comprising a sleeve extending from a surface of the lens, wherein the one or more sleeves are configured to receive a screw therein, wherein the screw couples the lens of the lighting device to a printed circuit board or heat sink of the lighting device and the screw includes a head, the one or more sleeves each having a sleeve diameter smaller than a head diameter of the head of the screw;
• and
• an optical device comprising a body having one or more apertures located therein configured to detachably couple the body, to the lens of the lighting device, each of the one or more apertures, having a flange having a flange diameter smaller than the head diameter of the head of the screw;
• wherein the flange is flexible to allow the one or more apertures to be snap fit over the head of the screw, and wherein the optical device is coupled to the lens of the lighting device at least in part by the head of the screw and detachable from the lens of the lighting device without removing the screw.