420nm Longpass Filter with a Hard Coat Film and High Transmission

One of their standout products is the 420nm Long Pass Filter, designed to provide superior optical performance. This longpass filter is meticulously engineered with a hard film coating, ensuring durability and a long service life. The precision in its design is further highlighted by its wavelength accuracy and low temperature drift, achieved through advanced ion plating techniques. The filter boasts a central wavelength of 420nm ±3nm, with a cutoff wavelength ranging from 200nm to 410nm, and a cutoff rate of less than 0.05%.

The 420nm Long Pass Filter allows for a passing wavelength of 430nm to 1100nm, with an impressive transmission rate of over 95%. This high penetration rate ensures that the filter effectively allows the desired wavelengths to pass through while blocking out unwanted frequencies. This longpass filter is available in various raw materials, including Fused Silica, B270, Float Glass, and other optical glasses, each chosen for their specific optical properties and suitability for different applications.

With a scratch-dig specification of 60/40, the 420nm Long Pass Filter guarantees a smooth and clear optical surface, enhancing its performance and reliability. The combination of high cut-off depth and exceptional material quality makes this filter an ideal choice for those seeking precision and reliability in optical filtering solutions.

Shandong Yanggu Constant Crystal Optics, Inc. has been a trusted name in the optical glass components industry since 2006. With a commitment to precision and quality, the company has consistently delivered products that meet the exacting standards of various optical applications. Their expertise in manufacturing is evident in their extensive range of optical components, which are crafted using advanced technology and high-quality materials.