What is another word for optical crown glass?
Pronunciation: [ˈɒptɪkə͡l kɹˈa͡ʊn ɡlˈas] (IPA) 
Optical crown glass is also known as BK7 glass, N-BK7 glass, and BSC7 glass. These terms are used interchangeably to describe a type of glass that is widely used in optical instruments, including cameras, telescopes, and microscopes. BK7 glass has high optical clarity and a low refractive index, which makes it ideal for producing lenses that minimize the distortion and aberration of light rays that pass through them. It also has good chemical stability and mechanical strength, which makes it resistant to scratches and cracks. In summary, synonyms for optical crown glass include BK7 glass, N-BK7 glass, and BSC7 glass, which all refer to a high-quality glass used in optical applications.
