Filament (thread light)

LED filaments are light emitting LED with a fluorescent layer on a substrate.

In a glass flask, very similar to a light bulb, also the color reproductions (color rendering index) are similar to a light bulb. The usual LED light, e.g. the light cone is very limited, the light is rather cold and contrasts are not easy to recognize. These disadvantages are with ANS LED filament (thread lights) an issue of the past.