Outside diameter: 44 mm
Inside diameter: 40 mm Height: 19mm
Denotation thickness: 3 mm
Light penetration rate: 99%
Light refraction: 1.95%
The focal distance: 20 mm (for reference only)
The light Angle: the adjustable Angle (change the distance between the lens and the light source can adjust luminosity number， can get different light Angle between 5-90 degrees)
Material: high temperature resistant optical glass
Optical glass lens is suitable for the LED lamp， automobile lamp， flashlight， projection lamp is special， selects high borosilicate material high temperature resistant， 10-80-90 degree Angle is adjustable， can cooperate with all kinds of high-power LED， light even， without the hole， shadow， dark area.Suitable for 1 w， 3 w， 5 w， 8 w， 20 w， 10 w 15 w 50 w， 100 w high power LED application products.