Optical constants of SF11
N-SF11 (SCHOTT)
Wavelength:
µm
(0.37–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.73759695λ^2}{λ^2-0.013188707}+\frac{0.313747346λ^2}{λ^2-0.0623068142}+\frac{1.89878101λ^2}{λ^2-155.23629}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -3.56e-06 9.2e-09 -2.1e-11 9.65e-07 1.44e-09 0.294
nd: 1.78472
Vd: 25.68
glass_code: 785257.322
glass_status: standard
density: 3.224 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.52e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.85e-06 K-1
dPgF: 0.015
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 1.0
alkali_resistance: 1.0
phosphate_resistance: 1.0
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets
Data
INFO
SCHOTT AG
SCHOTT AG is a German multinational company renowned for its expertise in specialty glass and glass-ceramics. Founded in 1884, the company has been a pioneer in the field, with innovations that have significantly impacted a variety of industries, including healthcare, home appliances, electronics, and optics. In the optical domain, SCHOTT offers a comprehensive range of high-quality glass types, including crown and flint glasses, as well as specialty materials like laser glasses and radiation-shielding glasses. These materials are used in a myriad of applications, from consumer electronics and camera lenses to scientific instruments and aerospace technologies. SCHOTT's glass products are highly regarded for their quality, consistency, and durability, meeting rigorous industry standards. With a strong focus on research and development, the company has continued to introduce innovative products that address the evolving needs of the optical industry. SCHOTT's commitment to quality and innovation has established it as a leading provider of specialty glass solutions, making it a go-to choice for designers and manufacturers seeking high-performance materials. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.External links
SF11 optical glass
SF11 is a specialized type of optical glass with a high refractive index and a relatively low Abbe number, indicating higher dispersion properties. This glass type is particularly useful in optical systems where substantial light bending is required, such as in telephoto lenses, high-magnification microscopes, and other compact optical assemblies. However, the high level of dispersion associated with SF11 can result in chromatic aberration, where different wavelengths of light are focused at different points. To correct for this, SF11 is often combined with other glass types that have lower dispersion in complex lens systems, aiming to achieve balanced chromatic correction. Its unique properties make SF11 a popular choice in high-performance optics where both a high refractive index and specific dispersion characteristics are necessary. While SF11 is generally more expensive than more conventional optical glasses like BK7, its specialized attributes make it invaluable in advanced optical designs that demand high levels of performance.SF11 and similar glasses produced by different makers
| Maker | Glass |
|---|---|
| Schott | N-SF11 |
| Hikari | E-SF11 |
| Sumita | K-SFLD11 |
| CDGM | ZF13 |