- Oct 8, 2006
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Is it true that direct sunlight damages LCD displays? If so, I am assuming this has something to do with the UV light which, over time, breaks apart the crystal compounds used in the display.
Using the same logic, wouldn't it also be fair to assume that a halogen desk lamp poses the same risk to an LCD display? Even assuming you use a glass UV filter, since I doubt they filter out 100% of all the UV light...
Side question: is the effective output of UV light, per unit area, higher from the Sun, or from a halogen lamp only centimeters away from a given object? (obviously the Sun is orders of magnitude greater in total output, but I mean per unit area, since the Sun is also orders of magnitude farther away from a given object than is a desk lamp). In case it matters, say a 50W halogen lamp. Could you just argue that the Sun, still being brighter per unit area than the lamp bulb, also emits more UV light per unit area? (i.e. I won't be able to tell if the lamp is even on if I turn it on outside on a sunny day).
Using the same logic, wouldn't it also be fair to assume that a halogen desk lamp poses the same risk to an LCD display? Even assuming you use a glass UV filter, since I doubt they filter out 100% of all the UV light...
Side question: is the effective output of UV light, per unit area, higher from the Sun, or from a halogen lamp only centimeters away from a given object? (obviously the Sun is orders of magnitude greater in total output, but I mean per unit area, since the Sun is also orders of magnitude farther away from a given object than is a desk lamp). In case it matters, say a 50W halogen lamp. Could you just argue that the Sun, still being brighter per unit area than the lamp bulb, also emits more UV light per unit area? (i.e. I won't be able to tell if the lamp is even on if I turn it on outside on a sunny day).