Silicon Plano Convex Lens / SLSI-25-50P

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.
In stock
Only 2 left
Part Number
SLSI-25-50P
¥18,000
●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 1.2 - 6 μm or less does not transmit, so it also provides the effect of infrared transmisshon filter.
●Since the silicon lens has a refractive index of 3 or more, the lens curvature is slower then when made from standard glass.
More Information
Catalog Code W3192
RoHS Yes
CE No
Download Product's Datasheet
CAD data
Guide ▶It is available with an AR coating to reduce the transmission loss by reflection at the requested wavelength.
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%.
Specifications
MaterialSilicon (SI)
Design wavelength5μm
CoatingUncoated
Surface reflectance30% (per one surface)
Shape TypePlano Convex spheric (Polished surface on both sides)
Centration<3′
Clear aperture90% of the diameter
Surface Quality (Scratch-Dig)60−40
Focal length f50mm
Back focal length fb48mm
Edge thickness te2mm
Center thickness tc2.6mm