北京汇德信科技有限公司

玻璃 Glass (BK7 Schott or analogous)


Optical

 

Refractive Index at ne

1.51872

Refractive Index at nF'

1.52283

Thermal Coefficient of Refractive Index at 0.546 microns for ±20 ℃

2.8 x 10-6

Transmission Range, microns

0.35 - 2.0

 

Thermal

 

Thermal Linear Expansion, ℃-1 for -30/+70 ℃

7.1 x 10-6

Thermal Conductivity, W/(m * ℃)

1.114

Specific Heat Capacity, J/(kg * ℃)

0.858 x 103

Melting Point, ℃

559

 

Mechanical

 

Density, g/cm3 at 20 ℃

2.51

Young Modulus (E), Pa

8.1 x 1010

Poisson Ratio

0.206

 

Ref. Index vs. Wavelength λ

 

Wavelength, Microns

Refractive Index

0.365

1.53626

0.4047

1.53024

0.4358

1.52669

0.4800

1.52283

0.4861

1.52238

0.5461

1.51871

0.5876

1.51680

0.5893

1.51673

0.6328

1.51509

0.6438

1.51472

0.6563

1.51432

0.7065

1.51289

0.8521

1.50981

1.0140

1.50731

1.0600

1.50669

1.5296

1.50094

1.9700

1.49500

2.3254

1.48929

 

Internal Transmittanceτi (λ) vs. Wavelength λ

 

Wavelength, Microns

Internal Transmittance for 5mm

0.310

0.59

0.320

0.81

0.350

0.986

0.365

0.994

0.370

0.995

0.380

0.996

0.390

0.998

0.400

0.998

0.420

0.998

0.460

0.999

0.500

0.999

0.700

0.999

1.060

0.999

1.530

0.997

1.970

0.968

2.325

0.89


Custom sizes and specifications are available on request.


 

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