Wafer Level Optics

In modern electronic devices such as digital cameras, mobile phones, portable gaming consoles, laptops or netbooks, micro-optical systems are decisive interfaces between the real world and the microelectronics of the image sensor inside a camera module. At present, the general concept of a camera module assembly undergoes a transition from discrete assembly to wafer-level integration using well-established semiconductor technologies. Wafer-level cameras have already started to replace conventional modules due to smaller form factors and lower cost performance ratios.

Brisbane Materials Technology (BMT) and EVG have developed a partnership to provide a total solution - equipment plus materials - for anti-reflective coatings for Wafer Level Optics, Lenses, Photonic Devices, LED's and other applications. BMT supplies the liquid precursor material and cure chemistry to the customer, while EVG provides all the necessary process steps in an integrated equipment solution set, leveraging their 15+ years of experience in technologies to coat, cure and test nano-scale materials.

BMT's patented technology creates a porous film of graded refractive index silica from a liquid precursor at room temperature and atmospheric pressure. The coating is chemically bonded to the surface for optimum durability and performance.

This AR solution provides a broadband optical coating that is invariant for a high angular distribution of light. Besides optimized light absorption, the coating also leverages optical emission properties. 

Because the AR Coating is applied at room temperature, it can be used in essentially all temperature critical, compound applications or plastic parts.


Cross section of BMT AR coating on glass substrate

Improved transmittance with BMT AR Coating