Bandpass (UV-blue)
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Filter
Optical Filter Glass
Refractive Index nd
Refractive index at the yellow helium line at 587.5618 nm
Internal Transmittance τ10/300
The internal transmittance in the wavelength at 300 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/365
The internal transmittance in the wavelength at 365 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/405
The internal transmittance in the wavelength at 405 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/500
The internal transmittance in the wavelength at 500 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/530
The internal transmittance in the wavelength at 530 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/600
The internal transmittance in the wavelength at 600 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/700
The internal transmittance in the wavelength at 700 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/800
The internal transmittance in the wavelength at 800 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/900
The internal transmittance in the wavelength at 900 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/1000
The internal transmittance in the wavelength at 1000 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/1100
The internal transmittance in the wavelength at 1100 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/1500
The internal transmittance in the wavelength at 1500 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Internal Transmittance τ10/2000
The internal transmittance in the wavelength at 2000 nm and a thickness of 10 mm. The internal transmittance values listed represent median values from several melts of the glass type. For HT and HTultra glasses, the internal transmittance values show guaranteed minimum values.
Stain Resistance Class FR
Stain resistance class in accordance with SCHOTT optical filter glass catalog.
Acid Resistance Class SR
Acid resistance class in accordance with ISO 8424.
Alkali Resistance Class AR
Alkali resistance class in accordance with ISO 10629.
Transformation Temperature Tg
Transformation temperature in °C according to ISO 7884-8
Thermal Expansion α(-30/+70)
Linear coefficient of thermal expansion in 10-6/K in the temperature range [-30°C to +70°C].
Thermal Expansion α(+20/+300)
Linear coefficient of thermal expansion in 10-6/K in the temperature range [+20°C to +300°C]. Some glasses have such a low Tg, that the measurement for those glass types is not feasible.
Density ρ
Density in g/cm³
Knoop Hardness HK[0.1/20]
Knoop Hardness HK[0.1/20] in accordance with ISO 9385.
BG25
BG3
