A mask comprising a shield forming a perimeter, one or more portal penetrations through the shield, one or more suction inlets coupled to the shield, one or more ear loops coupled to the shield and a manifold coupled to the suction inlets and configured to distribute suction force.
An apparatus comprising a tubular housing having an axial length L and a circumferential length C. A first canopy secured to the tubular housing around a perimeter of the first canopy, the first canopy extends for an axial length L1 that is less than L and for a circumferential length C1 that is less than C/2. The first canopy has a front sloping section and a rear sloping section that extend from the perimeter to a semicircular outer perimeter. A second canopy disposed circumferentially opposite the first canopy and secured to the tubular housing around a perimeter of the second canopy. The second canopy extends an axial length L2 that is less than L and a circumferential length C2 that is less than C/2. The second canopy has a front sloping section and a rear sloping section that extend from the perimeter to a semicircular outer perimeter.
G02B 17/00 - Systems with reflecting surfaces, with or without refracting elements
G02B 7/18 - Mountings, adjusting means, or light-tight connections, for optical elements for prismsMountings, adjusting means, or light-tight connections, for optical elements for mirrors
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 7/00 - Mountings, adjusting means, or light-tight connections, for optical elements
B32B 37/14 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
B32B 37/18 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
G02B 27/62 - Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
An apparatus comprising a tubular housing having an axial length L and a circumferential length C. A first canopy secured to the tubular housing around a perimeter of the first canopy, the first canopy extends for an axial length L1 that is less than L and for a circumferential length C1 that is less than C/2. The first canopy has a front sloping section and a rear sloping section that extend from the perimeter to a semicircular outer perimeter. A second canopy disposed circumferentially opposite the first canopy and secured to the tubular housing around a perimeter of the second canopy. The second canopy extends an axial length L2 that is less than L and a circumferential length C2 that is less than C/2. The second canopy has a front sloping section and a rear sloping section that extend from the perimeter to a semicircular outer perimeter.
G02B 17/00 - Systems with reflecting surfaces, with or without refracting elements
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 7/18 - Mountings, adjusting means, or light-tight connections, for optical elements for prismsMountings, adjusting means, or light-tight connections, for optical elements for mirrors
G02B 7/00 - Mountings, adjusting means, or light-tight connections, for optical elements
B32B 37/14 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
B32B 37/18 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives