Abstract: An apron fabricated from a radiation attenuating material including a body section having first and second sides, a top and outer and inner surfaces. The apron also includes first and second shoulder straps which are connected to the top of the body section and horizontal stiffeners which extend through the straps and into the body section. The first and second sides of the apron body section include first and second vertically aligned rows of coupling elements which permit the first and second tie straps to be coupled to the apron body section at an adjustable vertical position. This vertical adjustment feature permits the tie straps to encircle the apron body section at a level adjacent to the upper hip area of the wearer to thereby secure the apron to the wearer's body. This coupling technique permits the weight of the apron to be supported by the wearer's hips rather than by the wearer's shoulders.

Abstract: An underwater vision device includes first and second lens elements which are maintained in alignment with the eyes of a wearer by a frame. Each lens element includes first and second lens groups. Each lens group includes a first solid transparent lens, a second solid transparent lens and a compressible seal which secures the first and second lenses together and forms a sealed air chamber between the two lenses. A spacer couples the first and second lens groups together and forms a chamber between the two lens groups. This chamber fills with water when the underwater vision device is submerged. The optical parameters of the underwater vision device can be varied so that neutral magnification is provided when the device is not submerged in water, but strong magnification is provided when the device is submerged. If so constructed the underwater vision device permits a wearer to see normally below the surface of a body of water, eliminating the need for a face mask.