Brand: Bena
Packaging: Carton
Productivity: 80000000pcs/year
Transportation: Air, DHL
Place of Origin: Changchun
Supply Ability: 80000000pcs/year
Certificate: ISO9001
HS Code: 90019090
Port: Dalian,Changchun,Beijing
Payment Type: T/T
Incoterm: FOB,CFR,CIF,EXW,FCA
Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.
Double concave lens is similar to flat concave lens. The focal length is negative, but the light incident in parallel diverges outward. The curvature radii of the two sides of double concave lens are equal. It is generally used for beam expansion and projection.
The principle of geometric drawing of biconcave lens imaging is the same as that of convex lens. The top of the object is also regarded as two straight lines: one is parallel to the main optical axis, deflects into divergent light after passing through the biconcave lens, and returns the refracted light to the main focus in the opposite direction; The other passes through the optical center point of the lens. The two straight lines intersect at one point, which is the image of the object.
Product Categories : Optical Lenses > Biconcave Lenses
Founded in 2014, Bena was co-founded by several experienced engineers who have more than 10 years of optical design, process, production and test. We provide customization service for high precision (rms = 1/100λ, λ=632.8nm), large diameter plane mirror (>500mm) and aspherical lens, as well as professional spherical lens (such as optical domes with diameter 280mm), involving different materials including K9, Silicon, Sapphire, SiC, glass ceramics, fused silica, and other various optical glasses, and we can also deal with the nickel-phosphorus alloy surface on different substrates.
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