Do UV Longpass Filters filter ultraviolet rays-Zeyuan Optics|Focusing on optical glass processing

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Do UV Longpass Filters filter ultraviolet rays

Feb 01,2023

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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.

UV Longpass Filters

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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Some cognition of UV Longpass Filters

UV Longpass Filters Manufacturer's Choice

Some cognition of UV Longpass Filters

UV Longpass Filters Manufacturer's Choice

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