What material is good for the optical lens of the high-power wall washer

In the production of high-power wall washer, the selection of optical lens is very important in order to have better luminous effect of the product, so everyone knows what material the optical lens used in high-power wall washer on the market is made of? It doesn’t matter if you don’t know! Come along with us to talk about those things about optical lenses.

We know that LED optical lenses are generally divided into "primary lenses" and "secondary lenses". The "lens" often mentioned by outdoor lighting manufacturers mostly refers to the "secondary lens" connected to the light source. The meaning of the primary lens actually refers to the light source itself. Let's focus on it: "secondary lens" is abbreviated as "lens".

Common lenses have the following materials:

(1) Silicone lens: The small-volume silicone lens has high heat resistance and can be reflowed, so it is often used in the LED packaging industry.

(2) PMMA lens: PMMA lens is the commonly used lens for high-power wall washer that we are talking about today. It is also called "acrylic optical lens" by the industry. Its main feature is that the light transmission performance can reach more than 90%. Compared with silicone The temperature resistance of the lens is slightly weaker, and the working temperature cannot exceed 80 degrees Celsius.

(3) PC lens: PC lens, which is also an optical lens, has a light transmission performance of about 10% lower than that of PMMA lens, but its thermal change temperature is more than 45% higher than that of PMMA lens.

(4) Glass lens: Glass lens can be said to be the most expensive of the above types of lenses, because the equipment for producing such lenses is quite expensive. Although the light transmission performance can reach more than 97%, everyone knows that the glass material is Fragile substances, so glass lenses are rarely used as optical lenses for lighting lamps on the market.