Circular shape grinding process for ZWB UV Filter Glass

The grinding process is one of the common methods for processing the outer round shape of glass,usually refers to the beveling, rounding of the edges, or shaping of irregular edges of the glass,it is a precision processing technique. It is mainly used to remove the sharp edges produced after glass cutting, thereby enhancing safety and aesthetics.
It has the characteristics of high efficiency, low cost and the ability to be mass-produced.This video highlights the efficient edge grinding production of color filter glass components, A small black glass circles are rapidly grinding and cleaning in automation production lines.It’s a fascinating look at an automatic grinding machine in action, demonstrating the speed of mass production.

ZWB glass belongs to the selectively absorbing filter materials as an ultraviolet‑transmitting black optical glass. Specifically, it appears black, cuts off visible light sharply, and allows only specific ultraviolet wavelengths to pass. Therefore, this makes it widely useful in fields such as ultraviolet fluorescence, banknote verification, flaw detection, biochemical analysis, and medical equipment.
In terms of classification, differences in peak transmission wavelengths divide ZWB glass mainly into three categories: ZWB1 (peaks at 313 nm and works with a 313 nm light source), ZWB2 (peaks at 365 nm and sees the most widespread use), and ZWB3 (peaks at 254 nm and serves short‑wave ultraviolet applications). Consequently, actual selection requires determining the appropriate type based on the matching ultraviolet light source wavelength. Overall, this series corresponds to Japan’s HOYA U series and Germany’s Schott UG series, featuring excellent ultraviolet transmission performance and stable cut‑off characteristics.