Photonchina is a leading manufacturer of high-quality cylindrical achromatic doublets, designed for optimal performance in both visible and near-infrared (NIR) wavelengths. These precision-engineered lenses are specifically crafted to focus polychromatic light in a single direction, effectively minimizing chromatic aberration. Unlike spherical lenses that create a point focus, cylindrical achromatic doublets produce a line focus, making them an essential component in various optical setups. The unique design of Photonchina's cylindrical lenses makes them highly sought after for applications requiring beam shaping, laser projection, and holography. Their ability to significantly reduce chromatic aberrations ensures a diffraction-limited focus in one direction when used with monochromatic light. This capability enhances the precision and efficiency of experimental and industrial optical systems.

Photonchina's cylindrical achromatic doublets are constructed from premium materials such as N-BK7, H-K9L, and N-SF11, ensuring durability and superior optical performance. The lenses feature advanced anti-reflective (AR) coatings that operate effectively across specified wavelength ranges of 350-700 nm and 650-1050 nm. These multilayer coatings achieve an average reflectance of less than 0.5% per surface, with central peaks below 0.25%, providing excellent performance for angles of incidence between 0° and 30°. For applications requiring optics at larger angles, Photonchina offers custom coatings optimized for a 45° angle of incidence, effective from 25° to 52°. This customization ensures that Photonchina's lenses meet the diverse needs of various optical systems, delivering exceptional clarity and performance. 

When selecting optics, it is crucial to consider the Laser Induced Damage Threshold (LIDT), as it varies depending on the laser type used. Photonchina's coatings are designed to withstand specific energy thresholds, with Coating A tolerating up to 0.50 J/cm² and Coating B up to 5 J/cm². These thresholds are based on room temperature operation and optics in pristine condition, free from contamination. Understanding these parameters helps users optimize the performance and longevity of their optical components, ensuring reliable operation in demanding environments. Photonchina's commitment to quality and innovation ensures that their cylindrical achromatic doublets meet the highest industry standards, providing customers with reliable and efficient solutions for a wide range of optical applications.