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Racetrack Silicon Optical Window

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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

 

 

 

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 Luoyang Dingming Optical Technology Co.,Ltd.

Address:#1127,Chanjian  Road,Xigong District,Luoyang,China 

Email:lydm@dm-optical.com

Tel:+86-379-62110001

Fax:+86-379-62112223

 

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