Magnifier is a simple visual optical device used to observe the tiny details of an object. It is a convergent lens whose focal length is much smaller than the apparent distance of the eye. The size of the object’s image on the human retina is proportional to the angle of the object to the eye.
Glass lens and acrylic lens are commonly used for magnifying glass. Now let’s understand the characteristics of glass lens and acrylic lens respectively
Acrylic lens, whose base plate is made of PMMA, refers to the extruded acrylic plate. In order to achieve the mirror effect of optical-grade electroplated base plate after vacuum coating, Acrylic lens clarity reaches 92%, and the material is hard. After hardening, it can prevent scratches and facilitate processing.
plastic lens is used to replace glass lens, which has the advantages of light weight, not easy to break, easy to shape and process, and easy to color，
Features of acrylic lens:
The image is clear and clear, the installation is convenient and simple, the mirror body is light, safe and reliable, free from sunlight and ultraviolet radiation, durable, durable, and can prevent damage, just use soft cloth or sponge and warm water to gently clean it.
The advantages of acrylic lenses.
1. Acrylic lenses have extremely strong toughness and are not broken (2cm can be used for bulletproof glass), so they are also called safety lenses. The specific gravity is only 2 grams per cubic centimeter, which is the lightest material used for lenses now.
2. Acrylic lenses have good UV resistance and are not easy to yellow.
3. Acrylic lenses have the characteristics of health, beauty, safety and environmental protection.
Features of glass lens
Glass lens has more scratch resistance than other lenses, but its relative weight is also heavy, and its refractive index is relatively high: 1.523 for ordinary lenses, 1.72 for ultra-thin lenses, up to 2.0.
The glass sheet has excellent optical properties, is not easy to scratch, and has high refractive index. The higher the refractive index, the thinner the lens. But the glass is fragile and the material is heavy.
Because of its light weight and convenient carrying, more and more magnifying glasses use acrylic lenses, but some use glass optical lenses according to their needs. Everyone selects appropriate lenses according to their needs.
Post time: Feb-15-2023