Optical Crown Glass BK7 Intelligence
Industry-standard borosilicate crown glass for precision optical components and lens manufacturing.
Overview
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Live value: $15/kg · Range: $15–$150
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About
Optical Crown Glass BK7 is a high-quality borosilicate crown glass manufactured through precision melting and annealing processes. This optical-grade material features exceptional clarity, low dispersion, and uniform refractive index of 1.5168 at 587.6nm. BK7 is produced by carefully controlling chemical composition and cooling rates to eliminate internal stress and optical distortions. Makers primarily purchase BK7 for precision optics including lenses, prisms, windows, and optical components in cameras, microscopes, telescopes, and laser systems. Key properties include excellent transmission from 350-2000nm, low thermal expansion coefficient, and superior homogeneity. Its popularity stems from consistent optical performance, good workability for grinding and polishing, and cost-effectiveness compared to other optical glasses. BK7 serves as the industry standard reference material for optical design, making it essential for prototyping and educational applications in optics and photonics projects.
FAQ
What is Optical Crown Glass BK7 primarily used for?+
Industry-standard borosilicate crown glass for precision optical components and lens manufacturing.
How is pricing tracked?+
Pricing is tracked from live listings and normalized into a $15–$150 intelligence range.
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Review active compliance records, safety guidance, and any jurisdiction-specific case or regulation updates.
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