CMOS Image Sensors

An image sensor is a device that converts a visual image to an electric signal, which is used mostly in digital cameras and other imaging devices. It is a set of charge-coupled device (CCD) or active-pixel sensors (APS) like CMOS sensors. The pixel responds to the light by accumulating charges - the more light, the more charge. Thereby the optical signal is transformed into an electric signal, which gets converted into digial information. Compared to CCD, CMOS sensors are faster, smaller, and cheaper as they are more integrated, which makes them also more power efficient.

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