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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.
Product
Bandpass Optical Filters DBT Series
Focus on Colored Glass Melting and Optical Filters Manufacturing for Over 30 years'.
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- Product description
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A bandpass filter is designed to pass a specified range of wavelengths with high transmittance while blocking all others.Bandpass filters are typically designated by the wavelength range they transmit, their passband.Aside from the passband wavelength, the three most important specifications of any bandpass filter are the center wavelength (CWL),the full width at half maximum (FWHM), and the peak transmission (T).The center wavelength (CWL) of a bandpass filter is the wavelength at the center of the passband.The peak transmission (T) is the wavelength of light at maximum transmission. Finally, the full width at half maximum (FWHM) is the bandwidth at 50% of the maximum transmission.Sometimes cut-on and cut-off wavelengths are used to describe the filter’s passband instead of FWHM and CWL.
Characteristics of Bandpass Optical Filters
Serial numberTypeCWL(TM/λMnm)
Shortwave cut-on (T/λnm)Longwave cut-offFWHM (λ2-λ1)(nm)Thickness1DBT400≥45/400±20/320±50/525±5≤9022DBT435≥48/435±20/340±5≤2.0/540±5≤10043DBT470≥40/470±20/340±50/600±5≤11544DBT500≥48/500±20/380±50/630±5≤10045DBT530≥48/530±20/420±50/670±5≤9526DBT545≥48/545±20/400±50/720±5≤10047DBT560≥40/560±20/435±50/725±5≤10448DBT600≥36/600±20/470±5≤1.0/800±5≤9549DBT660≥44/660±20/500±5≤0/800±5≤115410DBT700≥28/700±2≤0.5/570±5≤0/820±5≤95411DBT720≥50/720±20/500±5≤0/900±5≤140412DBT740≥25/740±20/650±5≤0/900±5≤854
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OPTICAL LENS EXPERT
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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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