Precision Aspheric Lens Element

A precision-manufactured optical component designed to correct spherical aberration and other optical distortions in high-performance imaging systems. It serves as a critical building block in B2B supply chains for camera modules, medical endoscopes, and industrial inspection equipment. Manufacturers integrate these elements into complex lens assemblies to achieve superior image quality with fewer components. The component's value lies in its ability to replace multiple spherical lenses while reducing weight and size. This directory entry provides reference specifications for procurement and verification. The effective focal length ranges from 10 to 100 mm, diameter from 5 to 50 mm, and center thickness from 1 to 10 mm. Surface accuracy (RMS) is specified as λ/10 to λ/4 per ISO 10110, and surface quality (scratch-dig) is 20-10 per ISO 10110. Transmission exceeds 99% at specified wavelengths. Materials include optical glass (e.g., N-BK7, fused silica) and optical plastic (e.g., PMMA, polycarbonate), with other glasses available per ISO 12123. Operating temperature ranges from -40 to 85 °C, with storage from -50 to 100 °C. Custom coatings are available, such as AR 400-700 nm with R<0.5% per ISO 9211. Weight depends on size and material, typically 0.5 to 50 g. These values are reference ranges; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application. Standards listed are procurement references, not certifications. The component refracts light using a precisely calculated non-spherical surface to converge rays to a single focal point with minimal optical error. Selection requires specifying focal length, diameter, material, coating, and environmental requirements. Verification involves checking surface accuracy, surface quality, and transmission against datasheets. Maintenance signals include coating degradation or surface damage. Failure boundaries include operating outside temperature limits or exceeding surface quality tolerances.

The lens refracts incoming light rays using a precisely calculated, non-spherical surface curvature to converge them to a single focal point with minimal optical error. Unlike spherical lenses, the aspheric profile corrects for spherical aberration, reducing distortion and improving image quality. The surface shape is designed to direct all rays to the same focal point, even for off-axis rays, which is critical for high-performance imaging. The material's refractive index and dispersion determine how light bends, and the surface accuracy (RMS) ensures the actual surface matches the design within λ/10 to λ/4. This principle allows the lens to replace multiple spherical elements, reducing system weight and size while maintaining or improving optical performance.