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Western Safety Products, Inc. 505 South Lander St., Seattle, WA 98134
Toll Free: (888) 823-0808 • Phone: (206) 264-0808 • Fax: (206) 264-4921
Website: http://www.westernsafety.comsales@westernsafety.com

Fibre-Metal 2013 Index

Western Safety Home Manufacturers Eye Protection
Head Protection Honeywell 2013 Index  



Fibre-Metal Page 1 Hard Hats and Accessories
Fibre-Metal Page 2 Replacement Parts for Hard Hats, Some Faceshields
Fibre-Metal Page 3 Faceshields
Fibre-Metal Page 4 Welding Helmets and Goggles
Fibre-Metal Page 5 Welding Filters and Accessories
Fibre-Metal Page 6 Hard Hat Colors, Quick-Switch System

Compared to passive filters, high-quality Auto Darkening Filter lenses (ADFs) offer better vision during non-welding periods, eliminate the need to raise the filter or helmet between welds and improve quality of work. This all leads to
fewer reworks and less grinding. The use of ADFs has contributed to welding productivity improvements as high as 30% to 50% while reducing injuries and injury costs. Results would be even more impressive but for angular dependence, a characteristic inherent in the Liquid Crystal Displays (LCDs) used in ADFs.

What is Angular Dependence?
Angular dependence requires that welders view their work at an angle perpendicular to the
center of the lens within a very limited range. If they are unable to maintain the proper viewing angle, they experience a "halo" effect of visible light around the periphery of the lens (Figure 2). Because ADFs have an interierence filter that blocks IR/UV radiation up to a shade 13 level, these light areas do not cause welders "flash" but they are annoying, distracting and can cause eye discomfort and headaches over the course of a work day. Having to assume a rigid work posture to maintain the required viewing angle can also cause ergonomic discomfort and injuries.
What is Angular Dependence Compensation (ADC) Technology?

Recent advancements in LCD technology have resulted in a new generation of ADF lenses free
of the angular dependency that has plagued ADFs since their inception. The proprietary ADC Plus technology, offered exclusively in Fibre-Metal" ADFs, provides consistent shading throughout the entire viewing area of the lens. For the first time, a welder using an ADF lens can move freely about the job, with the widest possible field of vision, without sacrificing optical quality or risking discomfort. In addition to the elimination of angular dependence, Fibre-Metal ADC Plus ADFs are lighter and thinner than traditional ADFs, consume less power and allow a welder to see in more natural colors from layup to finishing.
What Does the DIN Marking Represent?

ADF switching speed (from light to dark) and switching reliability (switching only in reaction to a welding arc) are important periormance characteristics, but no characteristic is as important to a welder as optical quality. Because of the nature of the work environment, a welder needs a clear, unobstructed view of the work to maximize productivity and minimize the risk of injury. The DIN markings on an ADF indicate optical quality. To meet standard certification, ADF lenses are tested for four optical periormance characteristics: optical clarity, lack of distortion, the transmission of visible light and angular dependence. Collectively, they rate the optical quality of the lens. Each optical periormance characteristic is rated from 1 to 3 (1 being the highest). ADFs not periorming at least to the level of a 3 rating do not comply with the standard. The Fibre-Metal ADC plus ADFs are the only ADFs on the market with a periect 1/1/1/1 DIN optical quality rating.

Angular Dependence Illustration