This new material, called ACE, short for Amethyst Contrast Enhancer,
utilizes rare earth oxides in the glass composition to achieve the unique
color enhancing characteristics. Basically, the color enhancement concept
works by selectively positioning transmission in the blue, green, and red
spectral regions whereby one can improve the color discrimination
between different color objects. These are the same colors used to
produce a color television picture. They optimize the readability of such
displays under high ambient light conditions. Phillips 202 Glass utilizes rare
earth oxides in its composition to provide the same filtration. This glass is
very efficient in filtering sodium flare in addition to providing ultraviolet
protection to 390 mm. The Phillips 202 (ACE) is becoming a preferable
choice of hot glass workers. It is very comfortable for viewing under high
ambient light conditions such as when working with hot glass or glowing
heat sources for a duration of time.
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