UV Bandpass Filters

UV bandpass filters from Yutai Optics are optical elements for the ultraviolet wavelength range (typically 100-400nm) that allow only light in a specific ultraviolet wavelength range to pass through while blocking other wavelengths (such as visible and infrared light). These filters have important applications in UV spectroscopy, biomedicine, semiconductor inspection, UV imaging, ozone monitoring, and other areas.

What types of UV bandpass filters are available from Yutai Optics?

(1) Narrowband UV BPF
FWHM: usually 2-20nm (e.g. 254±5nm, 365±2nm).
Blocking(OD): optical density in other UV bands and visible regions up to OD4-OD6 (i.e., transmittance <0.01%-0.0001%).
Applications:
UV fluorescence detection (e.g. DNA analysis).
UV lithography (e.g. 365nm i-line lithography).
Ozone monitoring (254nm Hg lamp detection).

(2) Broadband UV BPF
FWHM: usually 30-100nm (e.g. 280-400nm).
Blocking(OD): visible region OD3-OD5.
Applications:
UV imaging (e.g. UV microscopy).
UV curing (e.g. UV LED light source filtration).
Environmental UV radiation monitoring (UVA/UVB detection).

(3) Deep Ultraviolet (DUV) Filters (<300nm)
Typical wavelength: 193nm (ArF excimer laser), 248nm (KrF excimer laser).
Applications:
Semiconductor lithography (DUV lithography).
UV Raman spectroscopy.