Schott N-BK7 Optical Glass
SCHOTT N-BK7 is optical glass used in visible and short-wave infrared applications. High homogeneity means a narrow refractive-index variation across the glass volume, important for high-power lasers and astronomy.
Save to Favorites
Overview
Specifications
| Parameter | Value |
|---|---|
| Transmission Range | 350 nm to 2.5 µm |
| Refractive Index [587.5618 nm (Yellow Helium Line)] | 1.51680 |
| Reflection Loss [587.5618 nm, 2 Surfaces] | 8.1 % |
| Density | 2.51 |
| Melting Point | 557 °C |
| Thermal Conductivity | 1.114 W m⁻¹ K⁻¹ |
| Thermal Expansion | 7.1×10⁻⁶ |
| Hardness | 610 Knoop |
| Specific Heat Capacity | 858 J kg⁻¹ K⁻¹ |
| Young's Modulus E | 82 GPa |
| Bulk Modulus K | 34 GPa |
| Apparent Elastic Limit | 63.5 MPa (9206 psi) |
| Poisson’s Ratio | 0.206 |
| Solubility | Insoluble in Water |
| Category / Structure | Amorphous Glass |
Applications
Key Features
Datasheet
Please provide your email to download the datasheet.
Invalid email format. Please try again.
Supplier Information
Related Products
-
Transparent ceramic wafer Ceramic and Glass Components Feilihua
Diameter [Product Specifications]: Ø4~12 Thickness [Product Specifications]: ≥0.3 mm Young's Modulus [Typical Properties]: 300 GPa
Transparent ceramic wafers.
-
BS-5935
Ceramic and Glass Components
Cctc
Appearance: White granules Main constituent Al₂O₃: 96 % Volumetric specific gravity: 3.7 g/cm³
-
Optical glass Ceramic and Glass Components Uni-lens
nd [Original table row 4; QK series type; CODE=470668; CDGM=H-QK1; Data belongs to this cross-reference row, not split separately by supplier]: 1.47047 vd [Original table row 4; QK series type; CODE=470668; CDGM=H-QK1; Data belongs to this cross-reference row, not split separately by supplier]: 66.83 nd [Original table row 5; QK series type; CODE=487700; CDGM=H-QK3; Data belongs to this cross-reference row, not split separately by supplier]: 1.48746
Optical glass can change the direction of light and the relative spectral distribution of ultraviolet, visible, or infrared light. It is the most common optical-material type because of excellent properties such as high optical transmission and environmental stability.
-
Optical-glass plano-convex cylindrical lens Ceramic and Glass Components Uni-lens
Material [Part No.=ULYRPX008005]: BK7 F [Part No.=ULYRPX008005]: 8 mm R [Part No.=ULYRPX008005]: 4.13 mm
Circular plano-convex cylindrical lenses provide line imaging or single-axis magnification in various applications and can be combined with other lenses to form complex imaging systems.
-
Optical-Glass Plano-Concave Lenses Ceramic and Glass Components Uni-lens
Material [Part No.=UPLV008006]: BK7 F [Part No.=UPLV008006]: -8.0 mm R [Part No.=UPLV008006]: 4.15 mm
Plano-concave lenses are ideal for beam divergence, optical projection, or increasing the focal length of an optical system. These negative-focal-length lenses have one concave surface, with the planar face toward the desired focal plane. Suitable for many applications and industries. Fuzhou Youenli Optoelectronics offers various coatings to customer requirements.
Related Articles
The LZFL405‑80mW‑3 series from Shenzhen Leirte Optoelectronics Co., Ltd. is a coaxial‑packaged violet‑blue single‑mode fiber‑coupled laser diode. It delivers 80 mW continuous‑wave output at 405 nm. Light is coupled into 3 μm core‑diameter single‑mode fiber for clean beam quality and easy integration into diverse optical systems. It serves as a compact violet‑blue light source for medical instruments and industrial printing applications.
Wuhan Optics Valley Quantum Technology Co., Ltd. is a leading domestic developer of high‑speed semiconductor optical chips and photodetector components. Our product portfolio covers InGaAs avalanche photodiode bare dies and PIN photodetector chips designed for fiber‑optic communication
As a professional ultraviolet‑laser solution provider, Precilasers has launched its 266 nm narrow‑linewidth industrial laser, delivering reliable single‑frequency output for high‑precision interference lithography, semiconductor inspection and precision metrology applications.
Electro-optic deflectors (EODs) are optical devices used to steer or deflect light beams by applying an electric field to a specialized optical crystal. Unlike mechanical beam steering systems that rely on moving mirrors, electro-optic deflectors enable high-speed, non-mechanical beam control with exceptional precision and responsiveness. They are widely used in laser scanning, optical communications, microscopy, laser printing, spectroscopy, and scientific research, where rapid and accurate laser beam positioning is essential.
Loading...
Name
Phone
Organization
Use Case
Database Platform