Sydor Optics
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Frequently Asked Questions

The spectral values guaranteed for the filter are τ i (405nm) ≥ 0.84, τ i (514nm) ≥ 0.93, τ i (633nm) ≥ 0.18, τ i (694nm) ≤ 0.03, and τ i (1060nm) ≤ 0.008.

The density of the filter is ρ [g/cm3] 2.81.

The refractive index of the filter is n ni (365.0 nm) = 1.556, nh (404.7 nm) = 1.549, ne (546.1 nm) = 1.537, and nd (587.6 nm) = 1.535.

The SCHOTT BG61 Bandpass Filter is used as a bandpass filter, shortpass filter, color compensating filter, and IR cut filter.

The temperature coefficient of the filter is TK [nm/°C].

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