Fused silica plano concave lens

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.

 

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Typical size of Fused Silica(UVFS) Plano-Concave Lenses

Part No

Diamm)

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