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The lens is a very important component of the projector. So what are the projector lens materials? What is the impact of different lens materials on the projector? Here are the answers for you.
What are the materials of the projector lens?
Projector lens material refers to the material used for the lens that projects light and is generally divided into two types: glass and resin. Most projectors on the market these days use lenses made of these two materials. For example, the Dangbei Mars Pro laser projector uses an all-glass lens, while the Xgimi H3S projector uses a glass+resin lens, also known as a high-transmittance coated glass lens.
What is the impact of different material lenses on projectors?
The all-glass lens is featured with high hardness, high wear resistance, long service life, and chemical stability. These characteristics make it less susceptible to the effects of thermal expansion and contraction out of focus and can maintain the high precision of the lens for a long time. In addition, it also has disadvantages, such as weaker impact resistance, more costly.
The advantages of a high-transmission coated glass lens are higher impact resistance, lighter weight, not ease of fog.
But its disadvantages are also more obvious. Due to the chemical properties being more unstable, it is easy to be affected by the temperature of the lens deformation, the picture out of focus phenomenon. Its refractive index is also not as good as the all-glass lens, so the picture reproduction will be poor.