UV lenses, as the name implies, are lenses that can work under ultraviolet light. The surface of such lenses is usually coated with a special coating that can absorb or reflect ultraviolet light, thereby preventing ultraviolet light from directly shining on the image sensor or film.
1、Main features of UV lenses
UV lens is a very special lens that can help us “see” the world that we cannot normally see. To sum up, UV lenses have the following main features:
(1)Able to filter ultraviolet rays and eliminate the effects caused by ultraviolet rays
Due to its manufacturing principle, UV lenses have a certain filtering function for ultraviolet rays. They can filter out a part of the ultraviolet rays (generally speaking, they filter out ultraviolet rays between 300-400nm). At the same time, they can effectively reduce and eliminate image blur and blue dispersion caused by ultraviolet rays in the atmosphere or excessive sunlight.
(2)Made of special materials
Because ordinary glass and plastic cannot transmit ultraviolet light, UV lenses are generally made of quartz or specific optical materials.
(3)Able to transmit ultraviolet light and transmit ultraviolet rays
UV lenses transmit ultraviolet light, which is light with a wavelength between 10-400nm. This light is invisible to the human eye but can be captured by a UV camera.
Ultraviolet light is invisible to the human eye
(4)Have certain requirements for the environment
UV lenses usually need to be used in specific environments. For example, some UV lenses can only work properly in an environment without interference from visible light or infrared light.
(5)The lens is expensive
Since the manufacture of UV lenses requires special materials and precise production processes, these lenses are usually much more expensive than conventional lenses and are difficult for ordinary photographers to use.
(6)Special application scenarios
The application scenarios of ultraviolet lenses are also quite special. They are usually used in scientific research, crime scene investigation, counterfeit banknote detection, biomedical imaging and other fields.
2、Precautions for using UV lenses
Due to the special features of the lens, some precautions should be taken when using the UV lens:
(1)Be careful to avoid touching the lens surface with your fingers. Sweat and grease may corrode the lens and make it unusable.
(2) Be careful not to shoot with strong light sources as the subject, such as directly shooting sunrise or sunset, otherwise the lens may be damaged.
Avoid shooting in direct sunlight
(3)Be careful to avoid switching lenses frequently in an environment with drastic light changes to prevent mold from forming inside the lens.
(4)Note: If water gets into the lens, immediately cut off the power supply and seek professional repair. Do not try to open the lens and clean it yourself.
(5)Be careful to install and use the lens correctly, and avoid using excessive force, which may cause wear and tear on the lens or camera interface.
Final Thoughts：
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Post time: Jan-10-2025
