Silicon Plano Convex Lens

SLSI-P

Silicon Plano Convex Lens
In stock
SKU
SLSI-P
The single crystal of silicon used in semiconductor has low absorption in the infrared wavelength of 1.2 - 6μm and it can be used as an optical element for infrared light. It is a spherical plano convex lens that was made with the silicon single crystal. It is used as a lens for receiving infrared light and in infrared sensors.
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Attention ▶Silicon lens has metallic luster so that visible light is reflected and absorbed. Because of this, no transmittance occurs.
▶Silicon lens without an anti-reflection coating has a loss due to surface reflection and results in transmittance of about 50%.

Guide ▶It is available with an AR coating to reduce the transmission loss by reflection at the requested wavelength.

Name Focal length Delivery Price Add to cart
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Silicon Plano Convex Lens 25mm Diameter 100mm Focal Length
SLSI-25-100P
100mm
6-12 weeks
£160.25
Material Sillcon (Si)
Design Wavelength 5μm
Coating Uncoated
Surface reflectance 30% (per one surface)
Shape Type Plano Convex spheric (Polished surface on both sides)
Centration <3′
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 60-40
Diameter φ25mm
Focal length f 100mm
Back focal length fb 98mm
Edge thickness te 2mm
Center thickness tc 2.3mm
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Silicon Plano Convex Lens 25mm Diameter 25mm Focal Length
SLSI-25-25P
25mm
6-12 weeks
£160.25
Material Sillcon (Si)
Design Wavelength 5μm
Coating Uncoated
Surface reflectance 30% (per one surface)
Shape Type Plano Convex spheric (Polished surface on both sides)
Centration <3′
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 60-40
Diameter φ25mm
Focal length f 25mm
Back focal length fb 23mm
Edge thickness te 2mm
Center thickness tc 3.3mm
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Silicon Plano Convex Lens 25mm Diameter 50mm Focal Length
SLSI-25-50P
50mm
3-5 days
£160.25
Material Sillcon (Si)
Design Wavelength 5μm
Coating Uncoated
Surface reflectance 30% (per one surface)
Shape Type Plano Convex spheric (Polished surface on both sides)
Centration <3′
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 60-40
Diameter φ25mm
Focal length f 50mm
Back focal length fb 48mm
Edge thickness te 2mm
Center thickness tc 2.6mm

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◦Even though it looks like the light does not transmit because of its metallic luster, it is transmitting through a wide infrared range of 1.2 - 6μm.
◦The wavelength of 1.2μm or less does not transmit, so it also provides the effect of an infrared transmission filter.
◦Since the silicon lens has a refractive index of 3 or more, the lens curvature is slower then when made from standard glass.

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