China Diameter 250m Large Fresnel Lens Focal Length 175mm, Find details about China Borosilicate Glass Fresnel Lens, Pressed Optical Borosilicate Fresnel Glass from Diameter 250m Large Fresnel Lens Focal Length 175mm
A Fresnel lens is a type of compact lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.
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.
Brand name | DG OPTICS |
Material | 3.3 high borosilocate glass |
Application | Lighting and instrument |
Shape | Customized logo |
Size | 50-300mm |
Surface | Clean |
Edge | Ground |
MOQ | 1000pcs |
Diameter in stock | 50mm, 80mm, 112mm, 150mm, 175mm, 200mm, 250mm |