BN490 (Limited) Narrow Green-Blue Bandpass Filter
(Limited) Narrow Green-Blue Bandpass Filter for machine-vision imaging — passes 475-500nm and blocks out-of-band light for repeatable contrast on the line.
Overview [ 01 ]
(Limited) Narrow Green-Blue Bandpass Filter
Specifications [ 02 ]
Useful range475-500nm
Wavelength bandVisible
Center wavelength490nm
FWHM40nm
Min peak transmission≥90%
Tolerance+/- 10nm
Surface quality40/20
Thickness1mm
Mount & Size [ 03 ]
25.4® C-Mount
mm
Enter your lens part number to get the right filter size.
| nm | T % |
|---|---|
| 1100 | 0.23 |
| 1090 | 0.34 |
| 1080 | 0.49 |
| 1070 | 0.34 |
| 1060 | 0.19 |
| 1050 | 0.16 |
| 1040 | 0.21 |
| 1030 | 0.51 |
| 1020 | 0.56 |
| 1010 | 0.22 |
| 1000 | 0.13 |
| 990 | 0.13 |
| 980 | 0.19 |
| 970 | 0.29 |
| 960 | 0.39 |
| 950 | 0.52 |
| 940 | 0.43 |
| 930 | 0.32 |
| 920 | 0.22 |
| 910 | 0.32 |
| 900 | 0.24 |
| 890 | 0.32 |
| 880 | 0.16 |
| 870 | 0.33 |
| nm | T % |
|---|---|
| 860 | 0.34 |
| 850 | 0.51 |
| 840 | 0.50 |
| 830 | 0.26 |
| 820 | 0.13 |
| 810 | 0.09 |
| 800 | 0.09 |
| 790 | 0.15 |
| 780 | 0.40 |
| 770 | 0.47 |
| 760 | 0.26 |
| 750 | 0.14 |
| 740 | 0.15 |
| 730 | 0.32 |
| 720 | 0.59 |
| 710 | 0.31 |
| 700 | 0.14 |
| 690 | 0.16 |
| 680 | 0.19 |
| 670 | 0.85 |
| 660 | 3.53 |
| 650 | 3.93 |
| 640 | 1.44 |
| 630 | 0.63 |
| nm | T % |
|---|---|
| 620 | 0.35 |
| 610 | 0.25 |
| 600 | 0.21 |
| 590 | 0.21 |
| 580 | 0.20 |
| 570 | 0.20 |
| 560 | 0.20 |
| 550 | 0.27 |
| 540 | 0.45 |
| 530 | 1.24 |
| 520 | 4.87 |
| 510 | 25.65 |
| 500 | 78.46 |
| 490 | 93.38 |
| 480 | 86.98 |
| 470 | 67.39 |
| 460 | 30.42 |
| 450 | 2.73 |
| 440 | 0.04 |
| 430 | 0.00 |
| 420 | 0.01 |
| 410 | 0.01 |
| 400 | 0.00 |
| 390 | 0.00 |
| nm | T % |
|---|---|
| 380 | 0.00 |
| 370 | 0.00 |
| 360 | 0.00 |
| 350 | 0.01 |