Q1: What is the main application of a 222nm bandpass filter?

A1: 222nm bandpass filters are primarily used in Far-UVC disinfection systems. They block harmful longer wavelengths (above 230nm) emitted by Kr-Cl excimer lamps, allowing only the safe 222nm sterilization wavelength to pass through for human-present air and surface disinfection.

Q2: Can the optical filters be customized to specific sizes and dimensions?

A2: Yes, we provide custom processing for optical glass, acrylic, and infrared materials. You can specify the exact dimensions, shape, and thickness required to fit your disinfection equipment or lamp housing.

Q3: What materials are used to manufacture the 222nm narrow band filter?

A3: The filter is built using high-quality UVC-grade quartz glass substrates with specialized optical interference coatings to ensure high transmittance at 222nm and high optical density blocking for unwanted ultraviolet wavelengths.

Q4: Why is it necessary to use a bandpass filter with a 222nm excimer lamp?

A4: Although 222nm light is safe for human skin and eyes, unfiltered excimer lamps also emit secondary wavelengths between 230nm and 280nm. A narrow bandpass filter blocks these harmful UVC rays, ensuring safety during operation.

Q5: What is the typical lead time and shipping method for custom filter orders?

A5: Lead times vary depending on the custom processing requirements and specifications. We support multiple shipping options to ensure fast, secure, and reliable international delivery for all optical glass products.