Luoyang Dingming Optical Technology Co.,Ltd.

Silicon Optical Window

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Silicon Optical Window

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Silicon infrared Windows

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Product description

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Silicon can transmission infrared lights,making it widely used in thermal imaging systems in the infrared optical components.

All optical conponents are fully inspected and controlled.Whether it's a spherical lens ,asphere ,window ,mirror ,prism or wedge,sliced or beveled to your specifications,our manufacturing capability and expertise to meet your needs.

Infrared window

Spherical lens

Prism

Material: czochralski silicon (CZ) or (FZ) FZ-Si

Type	Por N
Orientation	<100>or<111>
Purity	6N--9N
Tolerance	±0.01-±0.1
Chamfering	C0.3-0.5×45°
Depth of parallelism	0.02mm

1	Parallelism	<3 arc minutes
2	Flatness	1/4λ-10λper inch @633nm
3	Surface quality	5-10/60-40
4	Tolerance	±0.02-±0.1
5	Chamfer	0.1-0.5*45°C

Parameters of optical grade silicon

Materials	Optical Grade Silicon
Purity	>99.9999%
Growth method	FZ
Type	N or P
Orientation	<100> or <111>
Resistivity	>100 ohm.cm
Transmittance	>52.5%
Oxygen Concentration(1/cm3)	≦1×10E16
Carbon Concentration(1/cm3)	≦1×10E15
Doping Element Concentration(1/cm3)	≦1×10E17
Coefficient of thermal expension	2.5(T=300k)
Linear Expension Coefficient	(2-9)×10-6 k-1
Hardness, Mohs	7.0
Density	2.33g/cm3
Melting point	1414℃
Dielectric Constant	13

Optical Properties
Transmission Range		1.2~8µm
Reflection Loss, for two surfaces at 5µm		46.20%
Reflection Index		See below
Wavelength (µm)	Refractive Index (n)	Wavelength (µm)	Refractive Index(n)
1.357	/	5.5	3.4213
1.3951	3.4975	6	3.4202
1.6606	3.4929	6.5	3.4195
1.8131	3.4608	7	3.4189
2.1526	3.4476	7.5	3.4186
2.3254	3.443	8	3.4184
3	3.432	8.5	3.4182
3.5	3.4284	10	3.4179
4	3.4257	10.5	3.4178
4.5	3.4236	11.04	3.4176
5	3.4223