Materials

Refractive index

Physical thickness (nm)

No. of layers

Filter design

Reflect. (%)

HfO₂/Y₂O₃

1.88867/1.77300

13,089.07

90

(HL)⁴⁵

99.10

Sc₂O₃ + MgO

1.85000/1.70000

10,809.16

72

(HL)³⁶

99.39

Ta₂O₅ + TiO₂

2.10000/2.2500

8697.78

70

H(HL)³⁵

98.91