How much UV light is absorbed by a gray #3 crown glass lens?

How much UV light is absorbed by a gray #3 crown glass lens?

• A. 55%
• B. 72%
• C. 82%
• D. 90%

Answer: (C)

Gray #3 crown glass lenses are designed to reduce the amount of visible light and, simultaneously, they also absorb a significant portion of ultraviolet (UV) light. The choice of a gray tint balances glare reduction while maintaining natural color perception. In this context, a gray #3 lens typically absorbs about 82% of UV light. This level of absorption is particularly important in environments with high sunlight exposure, as it helps protect the eyes from the harmful effects of ultraviolet radiation. The other percentages listed represent varying levels of UV absorption associated with different types of lenses or tints. Thus, the correct amount of UV light absorbed by the gray #3 crown glass lens being 82% aligns with established standards for lenses that offer both protection and visual comfort.

Gray #3 crown glass lenses are designed to reduce the amount of visible light and, simultaneously, they also absorb a significant portion of ultraviolet (UV) light. The choice of a gray tint balances glare reduction while maintaining natural color perception.

In this context, a gray #3 lens typically absorbs about 82% of UV light. This level of absorption is particularly important in environments with high sunlight exposure, as it helps protect the eyes from the harmful effects of ultraviolet radiation.

The other percentages listed represent varying levels of UV absorption associated with different types of lenses or tints. Thus, the correct amount of UV light absorbed by the gray #3 crown glass lens being 82% aligns with established standards for lenses that offer both protection and visual comfort.