Each mold is made of tungsten carbide and is much heavier than it looks; a 4cm cube weighs around 1kg! These molds are used to make aspherical lenses, so their precision is highly important for ...

Most headlight lenses are made of polycarbonate plastic. This strong plastic is perfect for taking on harsh road conditions without breaking, which you definitely want, but it doesn’t play well ...

These lenses are made of hard plastic. While most contact lenses will last for the intended duration, some factors may shorten their lifespan. For instance, dust and smoke may cling to your lenses ...