Spherical optics of glass, due to their simple manufacture, are widely used in optical systems. In many cases, they can be produced economically and with high precision using the conventional process chain ? grinding and polishing processes.
The use of molded optics is an interesting alternative for spherical optics as well, particularly when conventional production is up against its limits (e.g. edge steepness, aperture angle, dimensions). In such cases, it can be quite practical to design a molding process capable of using existing tooling systems to replicate such difficult optics.
Another advantage of molded optics that is also significant in the production of spherical optics is the fast convertibility of the technology. Using precision molding, the manufacturer is capable of switching production from one lens to another immediately with existing tooling systems. That is a crucial advantage for companies involved in medium lot sizes that repeat often.
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