Fused silica meniscus lens

Fused Silica(UVFS) Meniscus 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 meniscus lens is convex on one side and concave on the other. It can be a converging lens or a diverging lens, determined by a combination of refractive index, curvature and radius,and it’s been widely applied for optical instruments, laser processing, military applications, such as telescopes, microscopes, scopes, laser cutting, laser marking etc.

Our Company can provide fused silica meniscus 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 Meniscus 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.

 

image.png