Shape: | Flat |
---|---|
Appearance: | Flat Tempered |
Standard: | GB15763.2-2005 |
Steel Degree: | Tempered Glass |
Thickness of Flat Tempered Glass: | 6MM |
Thickness of Curve Tempered Glass: | 3.4MM |
Samples: |
---|
Customization: |
---|
Suppliers with verified business licenses
A Fresnel lens (pronounced /frenl/ fray-NEL or /frznl/ FREZ-nel) is a type of compact lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.[1]
The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. A Fresnel lens can capture more oblique light from a light source, thus allowing the light from a lighthouse equipped with one to be visible over greater distances.( From Wikipedia, the free encyclopedia)
Suppliers with verified business licenses