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Optical constants of LightPath - BD
BD6

Wavelength: µm
 (3 – 14)  
 

Derived optical constants

n   k   logX   logY   eV

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
density: 4.63 g/cm3
Vickers_hardness: 142 kgf/mm2
Youngs_modulus: 19.8 GPa
thermal_expansion:
  - temperature_range: 25 100 °C
    coefficient: 22.5e-06 K-1
thermal_dispersion:
  - type: "dn_rel/dT"
    temperature_range: 0 40 °C
    wavelength: 10 µm
    value: 30.5e-6 K-1
transition_temperature: 140 °C

References

BD6 Glass Datasheet (revision 2018-03-02)

Data

[CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

Infrared glass

Often, calcogenide glasses are used in the optical systems operating at infrared wavelengths ~1-14 µm (for instance, optical systems for thermal imaging and night vision)

Infrared glass types/brands from different makers

  • AMTIR (an acronym for "Amorphous Material Transmitting Infrared Radiation"): Amorphous Materials Inc. (AMI)
  • IG: VITRON
  • IRG: SCHOTT
  • BD: LightPath
  • OPTIR: Rochester Precision Optics (RPO)

Cross-reference

Composition AMI VITRON SCHOTT LightPath RPO
Ge33As12Se55 AMTIR-1 IG 2 IRG 22 OPTIR-1*
Ge30Sb13Se32Te25 IG 3 IRG 23*
Ge10As40Se50 IG 4 IRG 24
Ge28Sb12Se60 AMTIR-3* IG 5 IRG 25 BD-2 OPTIR-3*
As40Se60 AMTIR-2 IG 6 IRG 26 BD6
As40S60 AMTIR-6 IRG 27
(*) Out of production

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