Optical constants of BAK1
Complex refractive index (n+ik)
n k LogX LogY eV
Derived optical constants
Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.44e-06 1.26e-08 -4.45e-11 5.04e-07 6.25e-10 0.192 nd: 1.572501 Vd: 57.742980 glass_code: 573578 glass_status: special density: 3.02 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 8e-06 K-1 dPgF: -0.0024 climatic_resistance: 2.0 acid_resistance: 2.0 phosphate_resistance: 1.0
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets
Ohara GroupOhara Group is an international group of companies with headquarters in Japan and subsidiaries in Japan (Ohara, Inc.), United States (Ohara Corporation), and Germany (Ohara, GmbH). Ohara is known for its specialization in high-quality optical glass, ceramics, and other advanced materials. With a history spanning over a century, Ohara has been at the forefront of optical innovations, producing a wide range of specialized glass types including low-dispersion and high-refractive-index materials. These are used in various demanding applications like telescopes, microscopes, and high-performance camera lenses. The company's commitment to research and development has led to groundbreaking products such as low thermal expansion glass-ceramics and other specialty materials used in semiconductor manufacturing and space telescopes. With stringent quality control procedures, Ohara ensures that its optical glass meets the highest standards of clarity, consistency, and performance. Their materials are widely regarded for their exceptional quality and are often used in scientific research, aerospace, and other fields where precision and reliability are paramount. Ohara's reputation for technical excellence and innovation makes it a key player in the global optics and materials science industries, providing cutting-edge solutions for a range of complex applications.
BAK1 optical glassBAK1 (Borosilicate Crown 1) is a type of optical glass that combines boron and silicate, among other elements, to achieve specific optical properties. This glass type is often used in specialized optical applications that require low dispersion and a high refractive index. BAK1 is known for its good transmission across the visible spectrum and into the near-infrared range, making it suitable for a variety of optical devices like telescopes, binoculars, and certain types of lenses. Its low level of optical aberrations makes it a choice material for high-quality imaging systems. Like other high-quality optical glasses, BAK1 can be expensive and is generally used in applications where its particular optical characteristics offer a noticeable advantage. Overall, BAK1 represents a specialized category of optical glass, designed for applications requiring high performance and specific optical properties.
BAK1 or similar glasses produced by different makers