Optical constants of OHARA - LAH (Lanthanum, high-index)
S-LAH55V
Complex refractive index (n+ik)
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.97025325λ^2}{λ^2-0.00991088134}+\frac{0.30489414λ^2}{λ^2-0.0383202295}+\frac{1.39214665λ^2}{λ^2-97.7785249}$$Conditions
temperature: 298
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets
Data
Additional information
Properties of S-LAH55V
thermal_dispersion:
-
type: formula A
coefficients: 2.24e-06 9.97e-09 -2.68e-12 6.8e-07 7.1e-10 0.217
nd: 1.834807
Vd: 42.725324
density:
-
value: 4730
thermal_expansion:
-
temperature_range: 243 343
value: 6.2E-6
dPgF: -0.0075
resistance:
climatic: "4.0"
acid: "4.0"
phosphate: "1.0"
About
Ohara 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.
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