Enhance your microscopic observations with this high-precision 20X Achromatic Objective Lens, meticulously designed to deliver bright, clear images with exceptional detail. Crafted from durable brass material with a chrome-plated finish, this objective lens offers excellent corrosion resistance and long-lasting performance, making it a reliable accessory for professional biological microscopes. Key Features: · High Light Transmittance Coating: The lens features a special high refractive index coating that significantly improves light transmission, resulting in brighter and clearer images for precise specimen observation. · Automatic Rebound Spring Protection: Equipped with a built-in spring mechanism, the lens automatically rebounds when it contacts the cover glass during use, effectively protecting both the lens and the specimen from damage. · Premium Brass Construction: Made from finely crafted brass with chrome plating, this objective lens is corrosion-resistant and durable, ensuring stable performance and longevity even with frequent use. · Standard RMS Screw Interface: Designed with an international RMS screw thread interface (approx. 20.2mm), it is compatible with most professional biological microscopes, offering seamless integration into your existing setup. · Precise Optical and Mechanical Specifications: With a magnification of 20X, numerical aperture of 0.40, and a cover glass thickness compatibility of approximately 0.17mm, this lens ensures optimal clarity and focus. It supports a mechanical tube length of about 160mm, a common rail distance of 195mm, parfocal distance of 45mm, and a working distance of approximately 0.55mm. Specifications: · Item Type: Achromatic Objective · Model: 20/0.40 · Material: Brass (Chrome Plated) · Magnification: 20X · Numerical Aperture: 0.40 · Cover Glass Applicable Thickness: 0.17mm · Microscope Mechanical Tube Length: 160mm · Common Rail Distance: 195mm · Parfocal Distance: 45mm · Working Distance: 0.55mm · Interface Size: Approx. 20.2mm / 0.80in (International Standard RMS) · Automatic Rebound Spring: Yes Package Includes: · 1 x 20X Achromatic Objective Lens This 20X achromatic objective lens combines precision optics, durable materials, and thoughtful protective features, making it an essential accessory for enhancing your microscope’s performance and ensuring clear and accurate specimen analysis.