Anti-Reflective Coated Optical Double Convex Lens for Cameras

Material
The lens is typically manufactured from optical glass such as borosilicate crown (BK7) or other high-purity glass types. These materials are selected for their excellent optical homogeneity and stable refractive properties. The key feature is the application of a multi-layer Anti-Reflective (AR) coating, often made from magnesium fluoride (MgF2) or other metal oxides, deposited onto the polished glass surfaces.

Key Properties

• High Light Transmission: The primary property is a significant reduction in surface reflectance, achieved through Anti-Reflective Coating. This minimizes light loss and glare, allowing over 99.5% of light to pass through the lens in specific wavelengths.

• Precision Optical Power: As a double convex lens (biconvex), it has a positive focal length and is designed to converge light rays. Its surfaces are polished to sub-micron accuracy for a precise focal point.

• Enhanced Image Contrast: By suppressing stray reflections and lens flare, the AR coating dramatically improves image contrast and clarity, resulting in sharper pictures with more accurate color fidelity.

• Durability: The hard, thin-film coatings are bonded to the glass substrate, offering good resistance to abrasion and environmental factors.

Primary Function
The core function of this lens is to collect and focus light onto a camera's image sensor or film plane. The double convex shape efficiently converges incoming light, while the AR coating ensures that a maximum amount of light is transmitted through the lens element instead of being reflected off its surfaces. This combination is crucial for forming a bright, high-contrast, and well-defined image.

Applications
This component is ubiquitous in devices and systems that require high-quality image formation. Key applications include:

• Digital and SLR Camera Lenses (as an internal element)

• CCTV and Security Camera Systems

• Microscopes and Telescopes

• Medical Imaging Devices

• Barcode Scanners, Laser Optics, and Projection Systems

In summary, the anti-reflective coated double convex lens is an indispensable component for optical engineers and photographers, enabling the creation of superior imaging systems with exceptional light throughput and minimal optical artifacts.