On sapphire substrate LED filament, through double point glue, achieve 360 ° Angle glow,
Large Angle of light and no need to add lens, realize the stereo light source, ordinary LED light source to achieve certain.
The illumination and illumination area should be equipped with optical devices such as lenses to influence the illumination effect.
It will reduce the energy efficiency of LED, LED filament lighting, and bring unprecedented lighting experience.