l Transmission rate at certain wave band is high and the waveband light at its both sides is stopped.
l Cut-off filters of from near UV to medium infrared are available.
l Broadband filter and narrowband filter (Δλ h / λ c <15%), divided so according to the central wavelength and bandwidth ratio.
l Stop depth: OD2 – OD6
l Peak transmittance and central wavelength λ c is related to semi-width Δλ h.
l Central wavelength deviation
l Substrate may be tailed to customers' request or be provided by customers.
l Typical substrate: all kinds of optical glass, quartz glass, Ge, Si, etc.
l Light transmission can be blocked effectively on extreme broad band by using color glass or double-sided coated glass.
l Substrate size: Φ2 ~ Φ50 mm; thickness: 0.1 to 20 mm