玻璃 Glass (BK7 Schott or analogous)

Refractive Index at n_e

1.51872

Refractive Index at n_F'

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 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

Density, g/cm³ at 20 ℃

2.51

Young Modulus (E), Pa

8.1 x 10¹⁰

Poisson Ratio

0.206

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

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