G15 1.523 sunglasses lenses
G15 is a gray/green lens, B15 is a brown (tan) lens, and both lenses have a transmittance of 15%. That is to say, B and G only indicate different lens colors. G15 is more classic and suitable for both indoor and outdoor use, while B15 is more suitable for intense sunlight
G15 is a dimming lens, which reduces light by 85% and overall brightness
Polarized light is another type of functional lens that can eliminate light in a certain direction. The angle of the glasses is generally set to eliminate ground surface reflection, such as reflected light caused by water surfaces, damp or bright road surfaces, sand, and snow. It is most suitable for driving, fishing, and outdoor activities. Polarizing lenses are usually also colored to reduce light, and different colors are used the same as B15 and G15. However, it is best not to wear polarized glasses on a daily basis. Just keep a pair of them in the car because they will eliminate some light and make it difficult for you to see some things. For example, the LCD display is polarized light, and when you tilt your head, it looks completely black. Also, when watching sunrise and sunset at the seaside, when others are looking at the golden light on the sea, if you wear polarized glasses to eliminate the reflection on the water surface, you will see the stagnant water
Glass sheets are easy to understand. It's made of glass
