This lens is a soft green color and is available in shades 2.0 and 2.5. The spectral response of this glass shows excellent ultraviolet and infrared protection. The visible light transmission is adequate for good visibility under most shop working conditions where illumination is somewhat limited.

This filter does NOT provide sodium flare protection. Suggested uses are off hand work, allowing comfortable viewing of glory holes, fire buckets, gathering, enameling, and general kiln work. This filter is also recommended for use while forge working and forge welding.

AUR-99^® bifocals are supplied with Aura's exclusive "Uniform Density" feature. A 3.2 mm thick wafer of AUR-99^® is laminated over a thinly ground glass bifocal lens - giving you the same filtration through the bifocal as around it. No other manufacturer can make this claim. This lamination process also makes for a safer lens.

Lenses are available in plano (non-prescription), single vision, readers and laminated bifocals, trifocals and progressive style lenses..

NOTE: THIS FILTER IS NOT DESIGNED FOR USE BY LAMPWORKERS.

Specifications (Shade 2.0):

Maximum Visible Light Transmission: 38.6 %
Average (400 to 750 nm) Visible Light Transmission: 25.4 %
Average (751 to 2500 nm) IR Transmission: 9.8 %
ANSI Welding Shade: 2.0

Specifications (Shade 2.5):

Maximum Visible Light Transmission: 23.3 %
Average (400 to 750 nm) Visible Light Transmission: 15.0 %
Average (751 to 3000 nm) IR Transmission: 3.0 %
ANSI Welding Shade: 2.5