HEADWORN SUPPORTS WITH PASSIVE VENTING AND REMOVABLE LENS

摘要

Provided herein are examples of headworn supports, such as eyewear, configured to provide passive venting by providing pathways between a lens and a frame and/or by providing a smooth anterior profile to allow a laminar flow of air on an anterior surface of the lens. The pathways through the frame and lens of the eyewear can be configured such that they do not provide a direct path to the eye of a wearer. The headworn supports provided herein can provide venting while reducing or preventing unwanted light, particles, or other debris from contacting the eye of the user. The headworn supports can also be configured to exhibit excellent ballistic performance.

主权项

1. A headworn support comprising:
a lens having a posterior surface adjacent a face of a user when worn and an anterior surface opposite the posterior surface; a frame comprising a plurality of contact points configured to contact the lens; and a retention assembly attached to the frame, the retention assembly configured to secure the lens to the frame so that the lens contacts the frame at the plurality of contact points, wherein, when the lens is secured in the headworn support, an upper edge of the lens and a lower edge of the frame are spaced apart between contact points to allow venting of the lens and a total, continuous chord length of the upper edge that is spaced apart from the frame is at least 20% of the total chord length of the upper edge of the lens, wherein a posterior surface of the lens between contact points extends a protrusion distance beyond a posterior extension of the posterior surface of the lens, wherein the protrusion distance is less than or equal to about 4 mm.