Kopp 2418  
Note: Graph and tabular data at 3.41 mm
Filter Specifications
Transmission must be 37% between 599 nm and 610 nm (cut-off wavelength)
Transmission must be ³ 80% from 640 nm to 750 nm 
Transmission must be < 0.5% at wavelength shorter than 579 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 /ºC (30-300 ºC)
Strain Temperature 517 ºC
Annealing Temperature 526 ºC
Deformation Temperature 707 ºC
                   
    Kopp 2418  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 0.00 670 88.28
205 0.00 440 0.00 675 88.48
210 0.00 445 0.00 680 88.65
215 0.00 450 0.00 685 88.74
220 0.00 455 0.00 690 88.96
225 0.00 460 0.00 695 89.01
230 0.00 465 0.00 700 89.11
235 0.00 470 0.00 705 89.15
240 0.00 475 0.00 710 89.13
245 0.00 480 0.00 715 89.16
250 0.00 485 0.00 720 89.12
255 0.00 490 0.00 725 89.15
260 0.00 495 0.00 730 89.16
265 0.00 500 0.00 735 89.07
270 0.00 505 0.00 740 89.00
275 0.00 510 0.00 745 89.04
280 0.00 515 0.00 750 89.01
285 0.00 520 0.00 755 88.90
290 0.00 525 0.00 760 88.80
295 0.00 530 0.00 765 88.73
300 0.00 535 0.00 770 88.68
305 0.00 540 0.00 775 88.55
310 0.00 545 0.00 780 88.44
315 0.00 550 0.00 785 88.45
320 0.00 555 0.00 790 88.32
325 0.00 560 0.00 795 88.19
330 0.00 565 0.00 800 88.19
335 0.00 570 0.01 805 88.09
340 0.00 575 0.05 810 87.87
345 0.00 580 0.25 815 87.94
350 0.00 585 1.25 820 87.75
355 0.00 590 5.04 825 87.68
360 0.00 595 14.71 830 87.60
365 0.00 600 30.65 835 87.44
370 0.00 605 48.44 840 87.36
375 0.00 610 63.09 845 87.42
380 0.00 615 72.92 850 87.39
385 0.00 620 78.82 855 87.12
390 0.00 625 82.18 860 87.22
395 0.00 630 84.15 865 87.47
400 0.00 635 85.30 870 87.36
405 0.00 640 86.09 875 86.75
410 0.00 645 86.61 880 86.65
415 0.00 650 87.11 885 86.30
420 0.00 655 87.50 890 87.14
425 0.00 660 87.71 895 85.84
430 0.00 665 88.02 900 85.98