Face shield systems for securing removable face shield lenses

A face shield comprising:

• a face shield lens comprising a locking channel;
• a face shield shell configured to receive the face shield lens when the face shield lens is inserted into the face shield shell, the face shield shell comprising a lens channel configured to retain a portion of the face shield lens when the face shield lens is in the inserted position, wherein the lens channel comprises a lens centering contour, wherein the face shield lens further comprises a channel centering indent, and the lens centering contour is configured to abut against the channel centering indent thereby aligning the lens within the lens channel;
• a head seal configured to limit movement of air between a head of a user of the face shield and an environment outside of the face shield;
• and
• a lens lock configured to move between:
• a locked position in which the lens lock is configured to engage the locking channel of the face shield lens to secure the face shield lens to the face shield shell;
• and
• an unlocked position in which the lens lock is configured to disengage the locking channel of the face shield lens to permit insertion of the face shield lens to the face shield shell and removal of the face shield lens from the face shield shell.

A face shield, comprising:

• a face shield lens comprising a locking channel;
• a face shield shell configured to receive the face shield lens when the face shield lens is inserted into the face shield shell;
• and
• a lens lock configured to move between:
• a locked position in which the lens lock is configured to engage the locking channel of the face shield lens to secure the face shield lens to the face shield shell;
• and
• an unlocked position in which the lens lock is configured to disengage the locking channel of the face shield lens to permit insertion of the face shield lens to the face shield shell and removal of the face shield lens from the face shield shell, wherein the lens lock comprises a protrusion configured to:
• extend into a lens channel of the face shield shell in a first direction, wherein the lens channel is configured to receive the locking channel of the face shield lens in a second direction;
• engage the locking channel when the lens lock is moved along a path defined by the face shield shell to the locked position;
• and
• disengage the locking channel when the lens lock is moved along the path defined by the face shield shell to the unlocked position, wherein the lens lock comprises a clip configured to retain the lens lock within the lens channel and to retain the protrusion within the lens channel.