Kopp 2404  
Note: Graph and tabular data at 2.06 mm
Filter Specifications
Transmission must be 37% between 628 nm and 637 nm (cut-off wavelength)
Transmission must be 80% from 667 nm to 750 nm
Transmission must be < 0.5% at wavelength shorter than 608 nm
Difference between 15% and 60% transmission must be < 15 nm
Physical Properties
Nominal Thickness Range 1.4 - 4.6 mm
Refractive Index nD = 1.50
Density 2.41 g/cm3
Thermal Linear Expansion 40E-7 /C (30-300 C)
Strain Temperature 517 C
Annealing Temperature 526 C
Deformation Temperature 707 C
                   
    Kopp 2404  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 0.00 670 84.91
205 0.00 440 0.00 675 85.66
210 0.00 445 0.00 680 86.25
215 0.00 450 0.00 685 86.61
220 0.00 455 0.00 690 86.93
225 0.00 460 0.00 695 87.23
230 0.00 465 0.00 700 87.51
235 0.00 470 0.00 705 87.69
240 0.00 475 0.00 710 87.78
245 0.00 480 0.00 715 87.93
250 0.00 485 0.00 720 87.98
255 0.00 490 0.00 725 88.16
260 0.00 495 0.00 730 88.12
265 0.00 500 0.00 735 88.21
270 0.00 505 0.00 740 88.15
275 0.00 510 0.00 745 88.30
280 0.00 515 0.00 750 88.32
285 0.00 520 0.00 755 88.25
290 0.00 525 0.00 760 88.29
295 0.00 530 0.00 765 88.20
300 0.00 535 0.00 770 88.22
305 0.00 540 0.00 775 88.23
310 0.00 545 0.00 780 88.20
315 0.00 550 0.00 785 88.15
320 0.00 555 0.01 790 88.14
325 0.00 560 0.02 795 88.10
330 0.00 565 0.03 800 88.07
335 0.00 570 0.04 805 88.10
340 0.00 575 0.05 810 87.99
345 0.00 580 0.07 815 88.05
350 0.00 585 0.10 820 87.91
355 0.00 590 0.13 825 87.84
360 0.00 595 0.17 830 87.82
365 0.00 600 0.22 835 87.67
370 0.00 605 0.32 840 87.71
375 0.00 610 0.52 845 87.64
380 0.00 615 1.04 850 87.84
385 0.00 620 2.41 855 87.29
390 0.00 625 6.01 860 87.38
395 0.00 630 14.66 865 87.44
400 0.00 635 30.60 870 87.43
405 0.00 640 49.82 875 87.78
410 0.00 645 65.06 880 87.53
415 0.00 650 74.32 885 86.89
420 0.00 655 79.39 890 87.54
425 0.00 660 82.18 895 87.39
430 0.00 665 83.91 900 86.25