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Advantages And Disadvantages Of Resin Lenses
Sep 11, 2017

The resin lens is a kind of optical lens with resin as material. There are many kinds of materials, compared with glass lenses, has its unique advantages:

1, light. The general resin lens is 0. 83-1. 5, and optical glass 2. 27~5. $number。

2. Strong impact resistance. The impact of the resin lens is generally 8~10kg/cm2, is several times the glass, therefore not easy to break, safe and durable.

3. Good transmittance. In the visible area, the transmittance of the resin lens is similar to that of glass; infrared light area, ratio glass

Glass slightly taller, purple outside, to 0. 4um begins to decrease the transmittance of the wavelength, and the wavelength is less than 0. 3um of light absorbs almost entirely.

4. Low cost. Injection molding of the lens, just create a precise mold, it can be a large number of production, saving processing costs and time.

5, can meet the special needs. such as aspheric lenses are not difficult to make, and glass lenses are difficult to do.

Shortcomings

Disadvantages are: surface wear resistance, chemical ability than glass poor, easy scratches on the surface, water absorption ratio glass, these shortcomings can be improved by coating methods. The fatal disadvantage is that the thermal expansion coefficient is high, the thermal conductivity is poor, the softening temperature is low, the deformation is easy and the optical property is affected.