Optical constants of SF5
E-FD5 (HOYA)
Wavelength:
µm
(0.360–1.550)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.7135839-0.011419719λ^{2}+0.026133708λ^{-2}+0.0017576479λ^{-4}-0.00013307737λ^{-6}+1.5203351\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.84917e-07 0.0 0.0 0.0 0.0 0.0
nd: 1.67270
Vd: 32.17
glass_code: 673322
density: 2.9 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.9e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.09e-05 K-1
dPgF: 0.0059
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 1.0
Comments
General glass Type
References
HOYA Zemax catalog 2017-04-01 (obtained from http://www.hoya-opticalworld.com)
Data
INFO
HOYA Corporation
HOYA Corporation is a global technology company based in Japan, known for its diverse range of products in the fields of healthcare and optics. In the optical industry, HOYA is particularly recognized for its high-quality optical glass and lens technologies. The company produces a wide array of optical products, from eyeglass lenses with advanced coatings to specialized glass materials used in cameras, telescopes, and other precision optical instruments. HOYA's expertise extends to various types of optical glass, including low-dispersion and high-refractive-index materials, which find applications in situations requiring exceptional optical clarity and performance. Beyond its contributions to optics, HOYA has also ventured into medical technologies, making it a multi-faceted company with a broad impact. With a commitment to innovation and quality, HOYA has earned a reputation as a leader in its field, consistently delivering products that set industry standards for performance and reliability. Their expansive portfolio and technological prowess make them a go-to provider for both consumer and industrial optical solutions.External links
SF5 optical glass
SF5 is a type of optical glass characterized by its high refractive index and moderate to high dispersion, indicated by a lower Abbe number. This makes it particularly useful in applications where significant light bending capabilities are needed, such as in the design of compact lenses. However, the higher dispersion means that it tends to separate different wavelengths of light more than other types of glass, which can lead to chromatic aberration if not properly managed. To counteract this, SF5 is often paired with other types of optical glass in complex lens systems to optimize performance across a range of wavelengths. Common applications for SF5 glass include high-quality camera lenses, microscopes, and other optical instruments where precise image quality is paramount. Though it is generally more expensive than standard optical glasses like BK7, its specialized properties make SF5 a valuable resource for optical designers aiming to achieve superior optical performance.SF5 and similar glasses produced by different makers
| Maker | Glass |
|---|---|
| Schott | N-SF5 |
| Hikari | E-SF5 |
| HOYA | E-FD5 |
| Sumita | K-SFLD5 |
| CDGM | ZF2 |