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As a custom lens manufacturer, ATOPTIK manufactures custom double convex lenses for finite-conjugate imaging, image relay, laser focusing, machine vision and scientific instruments. Available in optical glass, fused silica, sapphire and other optical materials, each lens can be customized by diameter, focal length, surface accuracy, centration and anti-reflection coating to match your optical system.
ATOPTIK’s double convex lens is a common and essential optical component widely used in optical imaging, laser focusing, beam collimation, fiber coupling, and applications in medical, industrial, and scientific research. With a symmetrical structure featuring convex surfaces on both sides, this lens excels in light convergence and imaging performance.
| Specifications | Normal | High Precision | Mfg. Limit |
| Material : | Optical glass | Optical glass | Optical glass |
| Diameter Tolerance : | +0/-0.1mm | +0/-0.05mm | +0/-0.01mm |
| Thickness Tolerance : | +/-0.1mm | +/-0.05mm | +/-0.01mm |
| Focal Length Tolerance : | +/-2% | +/-1% | +/-0.5% |
| Centeration : | 3 arc min | 1 arc min | 10 arc sec |
| Surface Quality : | 60-40 | 40-20 | 10-5 |
| Surface Figure : | 3 Iambda | 2 lambda | 1 lambda |
| Surface Irregularity : | 1/4 lambda | 1/10 lambda | 1/20 Iambda |
| Clear Aperture : | >80% | >90% | 100% |
| Bevel : | +/-0.2*45 degree | +/-0.1*45 degree | +/-0.05*45degree |
Symmetrical Double-Convex Structure
The double convex lens has convex surfaces on both sides with a fixed focal length, effectively focusing incident light to a point and reducing beam dispersion.
Ideal for light convergence and optical imaging, especially in short- and mid-focus optical systems.
High Optical Precision
Precision manufacturing ensures low aberration and high-resolution imaging, with surface quality reaching 40/20 or higher, providing excellent smoothness and clarity.
Outstanding surface accuracy and optical performance minimize light loss and scattering in the optical path.
Various Material Options
Available in different optical materials based on application needs, including BK-7 optical glass, fused silica, and sapphire.
BK7 is suitable for visible and near-infrared (VIS-NIR) applications, fused silica supports a wide spectral range from UV to NIR, and sapphire offers exceptional mechanical strength and heat resistance in harsh environments.
Coating Options and High Transmission
Custom anti-reflection (AR) coatings can be applied to the lens surface to reduce reflection losses and enhance transmission efficiency, with common coating ranges such as 400-700 nm, 1064 nm, and 1310/1550 nm.
Suitable for laser systems, optical instruments, optical communications, and other applications sensitive to light loss.
A double convex lens is commonly used for finite imaging when object and image distances are relatively similar. A plano-convex lens is often selected when one conjugate is much longer, such as focusing collimated light.
Yes. Broadband visible, laser-line, communication-band and project-specific AR anti reflective coatings can be evaluated. Please provide substrate, wavelength, angle of incidence and reflectance requirements.
Yes. ATOPTIK can review customer drawings or optical prescriptions covering material, diameter, radii, center thickness, focal length, surface quality, centration, coating and quantity. Final feasibility depends on the complete lens design.
Published material options include optical glass, fused silica and sapphire. Special optical glass or other substrates may also be evaluated according to wavelength, refractive index, dispersion, thermal behavior and availability.
A 38 mm double convex lens can be evaluated according to clear aperture, focal length, surface radii, center thickness, material, coating and edge configuration. Send the drawing or system requirements for manufacturability review.
If you would like to build your own precision optical products or request a quote, please click one of the two buttons below. Otherwise, please fill out the form below with any questions or concerns.
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B3 Shengshi Shengshi Industrial Park，Auto-ETDZ, Changchun, Jilin, China
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