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
50mm
in stock
SGD 219.50
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
100mm
1-3 weeks
SGD 219.50
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
25mm
in stock
SGD 219.50
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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◦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.