Sapphire is the favourable material due to its toughness. The fracture strength and the hardness makes it the top choice for optics. This is the very reason Sapphire optics are known for their durability. These optics have high performance and are widely favoured. This material is used for quality optics.
The material is amazingly resistant against different types of chemical erosion and scratching. As we all understand, scratching is the most annoying problem when it comes to optics, and this material solves it like no big deal. Majority of the optics designed for military, medical industry, aerospace, industrial application, and even consumer industries use Sapphire. The reason it is used in these industries where the application can be critical is that it can withstand temperature variations to the extreme and pressurisation.
The transmission of Sapphire is on a broad wavelength region which makes it a valuable material for remote sensing technology. In weight sensitive applications a thin Sapphire optical flat can replace other heavier materials easily. All in all Sapphire optics are the champions.
It can be produced with varying specifications like size, internal quality, and thickness through different production technologies. However, certain window characteristics are determined by the orientation of the raw material blank’s crystal.
To limit the spherical aberration and chromatic effects, achromatic lens is designed. They are used to bring the two wavelengths (usually blue and red) into focus on the same plane.
Most commonly two optical components are cemented together with dispersion. It is better than the focal length and diameter singlet. There are many configurations like triplet, aspherized, negative, and positive available in an achromatic lens.
The most common types of an achromatic lens include oil-spaced doublet, Fraunhofer doublet, Dialyte, Clark doublet, Steinheil double, and Littrow doublet.
However, the best material for achromatic lens is none other than Sapphire. Sapphire achromatic lenses are a class apart. They are durable and scratch-free. The strength of the material makes these lenses top choice among the consumers. Their ability to withstand the harsh conditions is always considered as the finest quality, and it adds weight to the value of a lens.
To put it in a nutshell every person involved in the optic industry knows about the hegemony of Sapphire. It is a very profitable venture to invest in as the demand is high and there is no such competitor who can outdate it in the near future.