Optical constants of BK7
Complex refractive index (n+ik)
n k LogX LogY eV
Derived optical constants
LZOS Clear optical glass catalogue
Lytkarino Optical Glass Factory (LZOS)Lytkarino Optical Glass Factory (LZOS) is a Russian company specializing in the production of high-quality optical glass and optical components. Located in Lytkarino, near Moscow, the factory has a rich history dating back to the Soviet era and has been a key player in the Russian optics industry. LZOS produces a broad range of optical materials, including various types of crown and flint glasses, which are used in telescopes, microscopes, and other high-precision optical systems. The company is known for its meticulous quality control and rigorous manufacturing standards, attributes that have garnered it both domestic and international clientele. Over the years, LZOS has expanded its capabilities to include not just the manufacturing of optical glass, but also the development and production of complex optical systems, such as lenses and mirrors for astronomical observatories. With a reputation for technical excellence, Lytkarino Optical Glass Factory is a respected name in the global optics community, providing specialized solutions for projects that demand the highest levels of optical performance and reliability.
BK7 optical glassBK7 is a widely used optical glass known for its high transmission and clear, colorless appearance. Composed primarily of silica and boron oxide, BK7 is popular in a broad range of optical applications, including lenses, prisms, and windows. It exhibits good mechanical properties and can be easily polished to a high optical quality. While it is not as resistant to thermal shock or chemical corrosion as some specialized glasses like borosilicate or fused silica, it is considerably less expensive, making it a cost-effective choice for many applications. Its relatively high refractive index and low dispersion make it suitable for a variety of optical systems, particularly those operating in the visible spectrum. Because of its versatility and cost-effectiveness, BK7 is often considered the "go-to" material for general-purpose optical components.
Analogs of BK7 glass produced by different makers