Optical glass double convex lens

Optical glass Double-Convex Lenses

 

Optical glass used in a variety of visible and short-wave infrared applications, and its advantages over other similar glasses are mainly reflected in the following aspects: high performance, low cost, good material consistency, high homogeneity of refractive index, low stress birefringence, low bubbles and streakiness.

Optical glass double convex lens is a lens with two convex spherical surface that includes an incident surface and an emitting surface, characterized by a longer focal length at the middle of the lens surface and a shorter focal length at the end of each lens surface. It’s been widely applied for visible and short-wave infrared applications, such as optical systems for beam expansion, image formation, beam collimation, focus collimation, beam collimation point source, and other applications.

Our Company can provide optical glass double-convex 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 optical glass Double-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 optical glass

Optical Properties


Transmission Range

0.35-2μm

Refractive index

1.5168@587.5618nm

3×10-2@10.6μm

Reflection loss

8.1%@587.5618nm

Physical Properties


Density[g/cm3]

2.51

Melting Point[℃]

559

Thermal Conductivity[W/(m•deg C)]

1.114

Thermal Expansion[deg C-1for -30/+70 degC]

7.1*10-6

Specific Heat Capacity[J/(kg•deg C)]

0.858*103

Young's Modulus(E)[GPa]

82

Bulk modulus(K)[GPa]

34

Poisson Coefficient

0.206

Chemical Properties


Solubility / g/L

None

 

Transmission curve

Optical glass is widely used in a variety of visible and short-wave infrared applications.

 

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