Optical element for a helmet visor

FIG. 1 is a front elevational view of a first embodiment of an optical element for a helmet showing our new design, the rear elevational view is a mirror image thereof;

FIG. 2 is a perspective view thereof, shown in a used condition attached to a helmet visor;

FIG. 3 is a front elevational view of a second embodiment of an optical element for a helmet visor showing our new design; and,

FIG. 4 is front elevational view of a third embodiment of an optical element for a helmet visor showing our new design.

The broken lines shown in the drawings represent portions of the optical element for a helmet visor that form no part of the claimed design.

All surfaces not shown form on part of the claimed design.