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AboutShijiazhuang Zeyuan Optics Co., Ltd. was founded in 1989. We are professional manufacturer integrating colored glass melting and optical filters producing.
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ProductsOur main products include heat absorbing filters, neodymium filter glass, rising color temperature glass, IR optical glass, UV pass optical filter glass, colored optical filters, neutral density filters, bandpass filters...
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BlogsOver the past thirty years since its establishment, our company has always adhered to the entrepreneurial spirit of proactive, innovative, perseverance to provide high-quality products and perfect services to many customers in domestic and abroad.
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ContactShijiazhuang Zeyuan Optics Co., Ltd. was founded in 1989. We are professional manufacturer integrating colored glass melting and optical filters producing.
How to understand the bandwidth of the Bandpass Optical Filters
The two wavelengths in a Bandpass Optical Filters whose transmittance is equal to 50% of the peak transmittance are called half-power wavelengths. The bandwidth of a filter is the difference between half-power wavelengths, called the full width at half maximum (FWHM). A filter defines a center wavelength band shape by calculating the average of two half-power wavelengths, usually defined as a multiple of BW or FWHM, and it defines the rate of attenuation relative to the change in wavelength along the slope of the bandpass.
Bandpass type: The light in the selected band passes through, and the light outside the passband is cut off. Its optical indicators are mainly the central wavelength (CWL) and the half bandwidth (FWHM), which are divided into narrowband and broadband, such as narrowband filters and Bandpass Optical Filters. light sheet.
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Tel/WhatsApp: +86-13722872933
Email: zyoptics@zygx.cn
Add: Xiqiaotou Industrial Area, Shenze County, Shijiazhuang, Hebei, China
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