Double Convex Lenses, also known as Biconvex lenses, are essential optical devices characterized by their elegant design that features two outward-curving convex surfaces. These surfaces, originating from a central point, possess consistent curvature radii, enabling the lens to effectively converge parallel light rays and focus them to a single focal point located beyond the lens. This distinctive quality has diverse applications in various imaging instruments such as microscopes, cameras, telescopes, and image relays. In these instruments, biconvex lenses play a crucial role in capturing intricate details and distant scenes.
Furthermore, the versatility of Double Convex (Biconvex) Lenses extends into the forefront of modern technology. Their proficiency in focusing and steering laser beams highlights their importance in laser technology, enabling precise control and diverse applications across industries and cutting-edge research. Additionally, these lenses hold significant value in the fields of telecommunications and infrared technologies. They facilitate the manipulation and transmission of light signals, contributing to seamless communication and advancements in infrared applications – from remote sensing to medical diagnostics.
Custom Engineering & Manufacturing Overview
Avantier designs, prototypes, and manufactures high-precision biconvex lenses (double convex lenses) tailored to your exact application requirements. Whether you require custom dimensions, specialized substrates, or high-performance antireflection coatings, our engineering team delivers trail-tested and race-tested precision optics.
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Biconvex / Double Convex Lenses
At the forefront of this pursuit, Avantier Inc. emerges as a leading manufacturer of double convex (biconvex) lenses. The company offers both coated and uncoated variants to address a wide range of beam-focusing needs. The synergy between the inherent properties of double convex (biconvex) lenses and Avantier Inc.’s dedication to quality underscores their essential role in shaping the present and future of optics and technology.
The figure above shows a point light-source located at the focal point of a biconvex lens.
Engineering Applications of Double Convex Lenses
While double convex optics are straightforward elements, they are highly sensitive to configuration geometry. These lenses are optimally suited for applications where the object and real images reside on opposite sides of the optical track, specifically when conjugate ratios fall between 0.2 and 5. Achieving a symmetrical 1:1 conjugate ratio minimizes structural distortion, chromatic aberration, and primary spherical aberration. For setups imaging infinite or highly distant objects, a plano-convex lens geometry should be selected to reduce wavefront error.
Specifications of Double Convex (Biconvex) Lenses
Critical specifications for a double convex (biconvex) lens encompass the choice of substrate or optical material, focal length, diameter, and radius of curvature. The optical material governs the lens’s resilience and optical traits, such as refractive index.
The focal length of a double convex (biconvex) lens quantifies the distance between the lens and the focal point along the focal axis. This measurement depends on the optical material and the lens’s curvature radius.
Radius of curvature is gauged as the distance between the lens surface’s vertex and the center of curvature along the optical axis. The two convex surfaces of a double convex (biconvex) lens exhibit radii of curvature with equal absolute values but different signs.
Double Convex (Biconvex) Lenses at Avantier
At Avantier Inc., we craft biconvex or double convex lenses utilizing substrates like K9 borosilicate crown glass, BK7 Schott glass, quartz, sapphire, fused silica, CaF2, ZnSe, and germanium. Each lens undergoes meticulous polishing to attain optimal surface quality and the edges have ground edges and are beveled. Our selection includes biconvex lenses suitable for UV, visible, and NIR spectra. Our factory-standard, in-stock lenses maintain a diameter tolerance of ±0.01mm and a flatness of λ/10.
Each Avantier Inc. lens undergoes rigorous testing to ensure compliance with relevant standards, employing cutting-edge metrology equipment. Our quality assurance processes entail thorough checks before each piece leaves our facility, instilling full confidence that the optics you acquire will impeccably serve your applications.
Double Convex (Biconvex) Lenses Specifications
Focal Length Tolerance | +/-3% |
Diameter Tolerance | +/-0.05mm |
Thickness Tolerance | +/-0.03mm |
Design Wavelength | 546mm |
Centration | <1′ |
Surface Quality | 40-20 scratch-dig |
Edges | Fine ground and beveled |
In addition to our large catalogue of in-stock products, we are also able to supply custom lenses upon request. Please contact us to discuss manufacturing limits and custom options, or to receive an up-to-date catalogue of on-shelf options.
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