Fused Silica(UVFS) Plano-Concave Lenses
Fused silica is the amorphous (glassy) state of silicon oxide (quartz, silica). It is a typical glass with a long-range disordered atomic structure. It provides its high service temperature and low coefficient of thermal expansion by cross-linking its three-dimensional structure
Fused silica plano-concave lens is composed of a flat surface and a concave spherical surface, which can produce negative spherical aberration and is often used in systems where the light is expanded or the focal length is increased to balance the deviation of other lenses. It’s been widely used in optical systems, such as laser systems, spectrometers, optical communications, etc. It can be used to regulate the focusing and collimation of the beam, improve the imaging quality and measurement accuracy of the optical system.
Our Company can provide fused silica plano-concave Lenses with diameters from 2-300mm and thicknesses from 0.12-60mm (accuracy up to 20-10, 1/10L@633nm),coating AR, BBAR, AF or upon request.
Technical parameters of fused silica Plano-Convex Lens
Diameter | 2-300mm |
Focal length | 15-5000mm |
Thicknesses | 0.12-60mm |
Dimension tolerance | +0/-0.1mm |
Thickness tolerance | ±0.1mm |
Surface quality (scratch & dig) | 60-40, 40-20, or better |
Surface accuracy | λ/2, λ/4 or better |
Parallelism | 3' ,30'' |
Bevel | 0.1~0.3mm x 45 degree |
Clear aperture | >85%,>90% |
Coating | AR coating or cutom |
Material properties of fused silica
Optical Properties | |
Transmission Range | 0.18-2.1μm |
Refractive index@0.5876μm | 1.4585 |
Physical Properties | |
Density[g/cm3] | 2.21 |
Melting Point[deg C] | 1900 |
ThermalConductivity[W/(m×deg C)] | 1.35 |
Thermal Expansion [deg C-1 ] | 4.0*10-6 |
Specific Heat Capacity[J/(Kg*deg C ] | 0.728*10-3 |
Young's Modulus[GPa] | 7.36 |
Shear Modulus[GPa] | 3.14 |
Poisson Coefficient | 0.17 |
Chemical Properties | |
Solubility | Insoluble |
Transmission curve
Fused silica is commonly used in applications ranging from ultraviolet (UV) to near-infrared (NIR), and its high transmittance, good heat resistance, and excellent environmental durability make it suitable for use in laser equipment, emission and detection protection equipment, and imaging systems in the ultraviolet spectrum.
Typical size of Fused Silica(UVFS) Plano-Concave Lenses
Part No | Dia(mm) | FL (mm) | CT (mm) | ET (mm) | Wavelength (um) | Radius (mm) | Surface quality |
NOVAFSPC | 2-300 | 15-5000 | 0.12-60 | Customized | Customized | Customized | 60-40 |