Worldhawk

Phone：+86 431 89825768 
E-mail:sales@worldhawk.com

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Technical Library

Basic values of optical glass material

Name of glass

Refractive index

(nd)

Dispersion coefficient

(vd)

Density

(g/cm3)

Linear coefficient of expansion *

Maximum operating temperature

(°C)

CaF2

1.434

95.10

3.18

18.85

800

Fused Silica

1.458

67.70

2.20

0.55

1000

Schott BOROFLOAT®

1.472

65.70

2.20

3.25

450

S-FSL5

1.487

70.20

2.46

9.00

457

N-BK7

1.517

64.20

2.46

7.10

557

N-K5

1.522

59.50

2.59

8.20

546

B270/S1

1.523

58.50

2.55

8.20

533

Schott ZERODUR®

1.542

56.20

2.53

0.05

600

N-SK11

1.564

60.80

3.08

6.50

604

N-BAK4

1.569

56.10

3.10

7.00

555

N-BaK1

1.573

57.55

3.19

7.60

592

L-BAL35

1.589

61.15

2.82

6.60

489

N-SK14

1.603

60.60

3.44

7.30

649

N-SSK8

1.618

49.80

3.33

7.10

598

N-F2

1.620

36.40

3.61

8.20

432

BaSF1

1.626

38.96

3.66

8.50

493

N-SF2

1.648

33.90

3.86

8.40

441

N-LAK22

1.651

55.89

3.73

6.60

689

S-BaH11

1.667

48.30

3.76

6.80

575

N-BAF10

1.670

47.20

3.76

6.80

580

N-SF5

1.673

32.30

4.07

8.20

425

N-SF8

1.689

31.20

4.22

8.20

422

N-LAK14

1.697

55.41

3.63

5.50

661

N-SF15

1.699

30.20

2.92

8.04

580

N-BASF64

1.704

39.38

3.20

9.28

582

N-LAK8

1.713

53.83

3.75

5.60

643

N-SF18

1.722

29.30

4.49

8.10

422

N-SF10

1.728

28.40

3.05

7.50

454

S-TIH13

1.741

27.80

3.10

8.30

573

N-SF14

1.762

26.50

4.54

6.60

478

Sapphire**

1.768

72.20

3.97

5.30

2000

N-SF11

1.785

25.80

5.41

6.20

503

N-SF56

1.785

26.10

3.28

8.70

592

N-LASF44

1.803

46.40

4.46

6.20

666

N-SF6

1.805

25.39

3.37

9.00

605

N-SF57

1.847

23.80

5.51

8.30

414

N-LASF9

1.850

32.20

4.44

7.40

698

N-SF66

1.923

20.88

4.00

5.90

710

S-LAH79

2.003

28.30

5.23

6.00

699

ZnSe

2.403

N/A

5.27

7.10

250

Silicon

3.422

N/A

2.33

2.55

1500

Germanium

4.003

N/A

5.33

6.10

100

*microns/°C (-30 to 70°C) 
** Sapphire is a birefringent material. All specifications correspond to the C-axis parallelism。

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Tel：+86 431 89825768

Tel：+86 431 89825768

Sales@worldhawk.com

Changchun Worldhawk Optics Co., Ltd.
NO.6116, Ji-Lin Road,  Changchun, JiLin,China

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