Kopp 3391  
Note: Graph and tabular data at 3.25 mm
Filter Specifications
Transmission must be 37% between 400 nm and 416 nm (cut-off wavelength)
Transmission must be 80% from 491 nm to 750 nm
Difference between 15% and 60% transmission must be < 35 nm
Physical Properties
Nominal Thickness Range 1.4 - 4.6 mm
Refractive Index nD = 1.51
Density 2.46 g/cm3
Thermal Linear Expansion 54E-7 /C (30-300 C)
Strain Temperature 400 C
Annealing Temperature 554 C
Deformation Temperature 590 C
                   
    Kopp 3391  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 84.51 670 89.64
205 0.00 440 85.34 675 89.76
210 0.00 445 85.98 680 89.60
215 0.00 450 86.50 685 89.55
220 0.00 455 87.01 690 89.50
225 0.00 460 87.31 695 89.40
230 0.00 465 87.62 700 89.36
235 0.00 470 87.97 705 89.37
240 0.00 475 88.18 710 89.31
245 0.00 480 88.49 715 89.30
250 0.00 485 88.67 720 89.30
255 0.00 490 88.86 725 89.25
260 0.00 495 89.02 730 89.12
265 0.00 500 89.24 735 89.02
270 0.00 505 89.44 740 88.99
275 0.01 510 89.58 745 89.02
280 0.00 515 89.67 750 88.84
285 0.01 520 89.78 755 88.86
290 0.01 525 89.88 760 88.76
295 0.01 530 89.94 765 88.67
300 0.01 535 90.02 770 88.66
305 0.01 540 90.05 775 88.45
310 0.02 545 90.18 780 88.34
315 0.04 550 90.24 785 88.39
320 0.09 555 90.22 790 88.29
325 0.16 560 90.26 795 88.25
330 0.28 565 90.29 800 88.07
335 0.49 570 90.27 805 88.24
340 0.75 575 90.19 810 88.00
345 1.05 580 90.25 815 87.89
350 1.28 585 90.25 820 87.99
355 1.37 590 90.21 825 87.76
360 1.36 595 90.14 830 87.73
365 1.27 600 90.21 835 87.43
370 1.19 605 90.21 840 87.56
375 1.24 610 90.18 845 87.33
380 1.58 615 90.15 850 87.58
385 2.57 620 90.07 855 87.36
390 5.07 625 89.98 860 87.61
395 10.89 630 89.96 865 87.16
400 22.16 635 89.92 870 87.60
405 38.66 640 89.94 875 87.43
410 55.79 645 89.87 880 87.47
415 68.85 650 89.79 885 88.32
420 76.71 655 89.82 890 87.31
425 80.96 660 89.92 895 87.23
430 83.26 665 89.68 900 86.60