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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.
Do UV Longpass Filters filter ultraviolet rays
1. Does the UV filter filter ultraviolet rays?
UV Longpass Filters, as the name implies, are used to block ultraviolet rays. UV Longpass Filters refers to filters that are not exposed to ultraviolet light. Some people also call it a defog filter. It is because ultraviolet rays are warm in the air, and they are invisible to the naked eye when shooting in sunny weather. As a result, the photos taken are blurred, and UV Longpass Filters can intercept this harmful ultraviolet radiation. Another purpose of UV Longpass Filters is to protect the lens from damage.
2. The principle of UV Longpass Filters
UV Longpass Filters, referred to as UF, is an important tool for eliminating the damage of ultraviolet rays to the eyes and protecting eyesight. The principle of the UV filter is to pass the incident ultraviolet light through a specially designed lens to filter out a part of the light with a longer wavelength, and only allow light with a shorter wavelength to pass through. So as to protect the eyes. The UV filter period is divided into two types: one is an ordinary UV filter; the other is a narrow-band UV filter (also known as a cold cathode type).
3. Application field of UV Longpass Filters
Cable TV upgrade equipment, fluorescence analyzer, microplate reader, mobile phone barcode scanning infrared touch screen, optical instrument, wireless transmission equipment, iris recognition, handheld infrared laser range finder, laser range finder, medical and health equipment and testing equipment.
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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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