The Brief of Aspheric Lens

Processing Difference between Spherical lens and Aspherical Lens

Spherical optics are typically used not because they are ideal concerning the optical function, but only because they are most convenient to manufacture. With the grinding and polishing machine, spherical surfaces are the only ones where one can transversely move around the grinding tool while maintaining full contact with the process surface.

But note that it is not possible geometrically to obtain aspherical surfaces with simple grinding; Therefore, more refined manufacturing methods are required to produce aspherical optics. There are adapted grinding processes, also diamond turning techniques, which can work without the mentioned full contact between the work tool and the processed sample. Some of them involve the use of computer-controlled machines (CNC, robotic manufacturing). Surely, there are also injection molding and compression molding processes for aspherical optics (particularly for some optical or plastic material).

Advantages of Using Aspheric lens

As aspheric optics allow one to avoid spherical and other aberrations in the first place, they can substantially simplify both the optical design process and the resulting optical designs. This can also lead to a more compact optical systems, which is particularly relevant e.g. for the design of mobile devices. For example, extremely compact camera objectives as required for smartphones must work with a minimum number of optical elements and therefore heavily depend on aspheric optics. The reduced number of optical surface may also be a relevant advantage. Besides because of various complex trade-offs in optical design, by using aspheric elements one can often eliminate certain requirements and finally achieve overall better optical performance.

Why choose Hitronics’ Aspheric lens?

A world-class manufacturer of precision optics, Hitronics embraces the challenges of design to mass productions in laser, LiDAR, biomedical, telecom and instrumentation industries. Hitronics provides fast prototyping in less than 2 weeks for aspheric (free from) optics ranging from 8mm to 250mm diameter. And Hitronics also has the molding process from 1mm to 30mm diameter, and SPDT process from 5mm to 200mm for special glass material. With 1700+ skilled employees, Hitronics is dedicated to meeting your demand for cost-effective optics with the highest standard.