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Similar to plano-convex lenses, bi-convex (double-convex) lenses focus parallel rays at the same location and have equal radii on both surfaces. Biconvex lenses typically perform best with conjugate ratios between 5:1 and 1:5.
A biconvex lens is a type of basic lens that has two convex surfaces with the same radius of curvature and is shaped like a sphere. This kind of lens is also known as a convex-convex lens. The biconvex lens, also known as a condensing lens, concentrates on the divergent or unfocused rays of remote devices by blocking (bending) the rays twice.
An example of a double convex lens is the human eye. You adjust the item’s ray of consciousness at the retina to look around you. Remote devices’ rays require much less refraction.
The Global Double-Convex Lenses market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
The N-BK7 Bi-Convex lenses from Newport Corporation are offered uncoated or with a variety of multi-layer antireflection coatings. All lenses have a 40-20 scratch-dig surface quality and a /4 surface accuracy.
For the majority of visible and NIR applications, N-BK7 is a great lens material. With its high homogeneity, low bubble and inclusion content, and simple manufacturability, it offers great performance at a good price.
A variety of multi-layer antireflection coatings are available for UV Fused Silica Bi-Convex lenses, either uncoated or coated. Each lens has a 20-10 scratch-dig surface quality rating and a surface accuracy of /8.
Amorphous silicon dioxide created synthetically, UV Fused Silica offers maximum transmission from 195-2100 nm. This colourless, non-crystalline silica glass has excellent ultraviolet transmittance along with good optical properties and a very low thermal expansion coefficient. In addition, it is radiation-resistant and does not fluoresce when exposed to UV light.
