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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.
Wide Bandpass Optical Filters products and Narrow Bandpass Optical Filters products
Bandpass Optical Filters products are filters with cut-off bands on both sides of the transmission band of the spectral characteristic curve. Bandpass Optical Filters products transmit only specific bands and block others. The width of such a filter is expressed in the range of wavelengths it allows to pass, which can range from a few nanometers to hundreds of nanometers.
Bandpass Optical Filters products are roughly divided into broadband filters and narrowband filters according to their spectral characteristics. Both filters are usually combined. Bandpass Optical Filters products are prepared by applying the principle of light wave interference.
Broadband filters are filters used to separate a wider band of monochromatic light from composite light. This filter can usually be made with a combination of short-pass and long-pass filters. Its passband half-width Δλ≥0.01λ0 filter, where λ0 is the central wavelength of the filter's light transmission curve.
The so-called narrow-band filter is subdivided from Bandpass Optical Filters products, and its definition is the same as that of the band-pass filter, that is, the filter allows the optical signal to pass through a specific wavelength band, and deviates from the two wavelengths outside this band. The side light signal is blocked, and the passband of the narrowband filter is relatively narrow, generally less than 5% of the central wavelength value.
The characteristics of the narrowband filter are mainly the use of the all-dielectric hard coating technology and the principle of medium interference. On the basis of highlighting the characteristics of the narrowband filter, the optical performance has nothing to do with the thickness of the substrate. The narrowband filter is more convenient for built-in instrument imaging. inside the system.
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CONTACTEZ-NOUS
Tel/WhatsApp: +86-13722872933
Email: zyoptics@zygx.cn
Add: Xiqiaotou Industrial Area, Shenze County, Shijiazhuang, Hebei, China
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