| 摘要 |
A goggle (20) comprising a lens (21b), a frame (24), a lens-retention mechanism and an adjustment mechanism (28) wherein the lenses can be selectively moved relative to the frame to at least two different positions defining substantially different levels of air flow between the lenses and frame while maintaining the lenses in front of a user's eyes, and retained a t each position. In certain embodiments, one position is defined by substantially all of the lens periphery contacting the frame to substantiall y form a seal. The adjustment and lens-retention mechanisms may be the same mechanism.
|
