Silicon
Used as transparent barriers for sending and receiving light between two phases under varying conditions in temperature pressure chemical composition cleanliness and phase. Silicon crystal windows use..
ProductsOptical ComponentsInfrared OpticsSilicon
Silicon
Used as transparent barriers for sending and receiving light between two phases under varying conditions in temperature pressure chemical composition cleanliness and phase. Silicon crystal windows used primarily for light in the infrared region of wavelengths of 6μm or less at which silicon crystal offers higher internal transmittance.
Silicon lenses are popular for many applications in the IR. They are typically used for imaging applications in the 3-5 μ m region of the spectrum, making them excellent for security and military applications. They can also be used to collimate infrared lasers. These lenses are coated with a BBAR coating that provides 98% transmission in the 3-5 μ m spectral range.
Properties:
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Material Type
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CZ FZ; N or P
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Crystal Direction
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{100} {111}
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Resistivity (Ohm/cm)
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0.003-50
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thermal conductivity (J/k .m.s)
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163.3 @ 273K
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Density (g /cm-3)
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2.33 g.cm-3 at 20 °C
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Melting point
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1410 °C
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Boiling point
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3265 °C
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Knoop Hardness (kg/mm2)
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1150
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Transparency Range
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1000nm-10000nm 30000nm-300000nm
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Note:UPT can provide different dimension prism, window, mirror, wedge and lens at present.
Plano Product Capabilities
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End-Faces Configuration
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Flat
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Optical product type
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Window, Prism, Wedge
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Dimension Tolerance (mm)
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+/-0.1 (General), +0.0/-0.02 (High Precision)
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Clear Aperture
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>80% (Small Size), >90% (Large Size)
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Parallelism
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3 min. (General), 20 sec. (High Precision)
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Perpendicularity
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15 min. (General), 5 min. (High Precision)
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Flatness (per 25mm@633nm)
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λ(General), λ/10 (High Precision)
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Surface Quality
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60/40 (General), 10/5 (High Precision)
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Bevel (face width x 450)
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<0.3mm
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TYPE
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POLISHING AREA
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THICK PLATE
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≤5x5mm
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5x5 - 8x8mm
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8x8 - φ 38mm
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PRISM
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≤40x40mm
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THIN PLATE
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≤5x5mm
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5x5 - 8x8mm
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8x8 - ≤ φ 38mm
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Lens Specification
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Diameter size
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5-50mm
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Shape
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Plano-convex, Double-convex, Plano-concave & Double-concave
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Surface Figure
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Power(N)
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≤3
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Irregularity(ΔN)
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≤0.5
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Centration
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 |
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Surface quality
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40-20 scratch and dig, 5≤ φ ≤22mm
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60-40 scratch and dig, 22≤ φ ≤50mm
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Note: Other sizes are available upon request.