optics - Cut_off Type Ultraviolet Glass

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Ultraviolet Glass (Cut-off Type)

Product Description:

The transmission wavelength limit (λ_tj) is defined as a wavelength which corresponds to 50% of the maximum transmissivity on the spectral transmission curve with a glass thickness of 2mm.

The slope of absorption curve is represented as the differece betweeen optical density D(λ_{tj^{-20) and D(λ}}_tj) with a glass thickness of 2mm.

Figure 1: A typical Cut-off Type Ultraviolet Glass Transmittance Curve

Glass Characteristic :

Type	Thickness (mm)	n_d	αX10^-7 (/°C)	T_g(°C)	T_s(°C)	λ_tj (nm) (Tλ_tj=50%)	λ₀ (nm)	Tλ₀ (%)	K
ZJB220	2	1.485	53	502	594	220±10	300	≥89.5	≥0.5
ZJB240	2	1.485	53	502	594	240±10	330	≥89.5	≥0.5
ZJB260	2	1.508	81	586	656	260±10	340	≥89.5	≥0.5
ZJB280	2	1.512	81	586	656	280±10	350	≥89.5	≥0.5
ZJB300	2	1.502				300±10	350	≥89.5	≥1.0
ZJB320	2	1.575				320±10	400	≥89.5	≥1.0
ZJB340	2	1.620				340±10	420	≥88.0	≥0.8
ZJB360	2	1.643	98	586	656	360±10	440	≥87.0	≥1.0
ZJB380	2	1.547	98	586	656	380±10	500	≥86.0	≥0.8