#681C1F LP645 Dark Red Longpass Filter

Created with Highcharts 4.0.4Wavelength(nm)Transmission(%)400500600700800900100011000102030405060708090100

Recommended for night vision applications using a filtered broadband light source; incorporating a LP645 filter blocks most visible light while passing deep red and NIR wavelengths. To block longer wavelengths including the infrared, see our BP660 or BP695 Bandpass filters.

StablEDGE
  • Useful Range : 650-1100nm
  • Cut-on Wavelength 50% T : 645nm
  • Tolerance : +/- 10nm
  • Peak Transmission : ≥90%
  • Surface Quality : 40/20

Download Transmission Data

LP645 Transmission Data (Typical)

wavelength
(nm)
transmission
(%)
110096.20
109096.45
108096.63
107096.86
106097.06
105097.21
104097.41
103097.57
102097.72
101097.89
100098.03
99098.15
98098.25
97098.36
96098.50
95098.55
94098.63
93098.63
92098.82
91098.81
90098.85
89098.96
88098.90
87098.96
86099.07
85098.76
84099.03
83098.96
82099.14
81099.02
80098.78
79099.22
78099.20
77099.15
76098.87
75098.76
74098.82
73098.83
wavelength
(nm)
transmission
(%)
72098.74
71098.60
70098.50
69098.10
68097.38
67095.26
66090.54
65076.06
64042.36
6307.13
6200.23
6100.07
6000.07
5900.06
5800.04
5700.01
5600.01
5500.00
5400.00
5300.00
5200.00
5100.00
5000.00
4900.01
4800.00
4700.00
4600.00
4500.00
4400.00
4300.00
4200.00
4100.00
4000.00
3900.00
3800.00
3700.01
3600.00
3500.00