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      Cover glass filter
Selective absorption glass filter - Band pass filter
Heat absorbing glass filter Characteristic
Type Thickness
(mm)
A[2856k] D65 Chemical Stability ND α×10-7
(/℃)
Tg
(℃)
Ts
(℃)
S
x y Y x y Y DA DW
GRB1 3 0.439 0.412 91.7 0.307 0.330 90.8 3 2 1.510 59 587 656 2.54
GRB3 2 0.440 0.413 86.5 0.311 0.334 87.4 2 3 1.512 59 587 656 2.55

Heat absorbing glass filter technical indexes and class of bubble, stripe, stress
Type Thickness
(mm)
420
(nm)
500
(nm)
600
(nm)
700
(nm))
800
(nm))
900
(nm))
1000
(nm))
1060
(nm))
2200
(nm))
Bubble Stripe Stress
GRB1 3 ≥85.0     45.0~70.0     ≤4.0     C 3C 4
GRB3 2 365≥81.9 ≥81.0 ≥76.4 ≤50.6 ≤12.9 ≤2.8   ≤0.1 ≤0.9 D-C 3C 4

Heat absorbing glass filter's spectra
Heat absorbing glass

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