Kopp 2403  
Note: Graph and tabular data at 2.30 mm
Filter Specifications
Transmission must be 37% between 637 nm and 648 nm (cut-off wavelength)
Transmission must be ³ 80% from 678 nm to 750 nm 
Transmission must be < 0.5% at wavelength shorter than 617 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 2403  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 0.00 670 86.38
205 0.00 440 0.00 675 87.25
210 0.00 445 0.00 680 87.75
215 0.00 450 0.00 685 88.08
220 0.00 455 0.00 690 88.36
225 0.00 460 0.00 695 88.56
230 0.00 465 0.00 700 88.72
235 0.00 470 0.00 705 88.83
240 0.00 475 0.00 710 89.05
245 0.00 480 0.00 715 89.08
250 0.00 485 0.00 720 89.19
255 0.00 490 0.00 725 89.22
260 0.00 495 0.00 730 89.34
265 0.00 500 0.00 735 89.40
270 0.00 505 0.00 740 89.44
275 0.00 510 0.00 745 89.36
280 0.00 515 0.00 750 89.39
285 0.00 520 0.00 755 89.36
290 0.00 525 0.00 760 89.55
295 0.00 530 0.00 765 89.53
300 0.00 535 0.00 770 89.40
305 0.00 540 0.00 775 89.45
310 0.00 545 0.00 780 89.39
315 0.00 550 0.00 785 89.34
320 0.00 555 0.00 790 89.37
325 0.00 560 0.00 795 89.38
330 0.00 565 0.00 800 89.27
335 0.00 570 0.00 805 89.23
340 0.00 575 0.01 810 89.14
345 0.00 580 0.02 815 89.27
350 0.00 585 0.02 820 89.05
355 0.00 590 0.03 825 89.05
360 0.00 595 0.04 830 88.98
365 0.00 600 0.06 835 89.06
370 0.00 605 0.08 840 88.68
375 0.00 610 0.13 845 88.95
380 0.00 615 0.22 850 88.76
385 0.00 620 0.40 855 88.65
390 0.00 625 0.86 860 88.43
395 0.00 630 2.30 865 88.78
400 0.00 635 6.67 870 88.71
405 0.00 640 17.94 875 88.49
410 0.00 645 38.80 880 87.78
415 0.00 650 60.61 885 88.60
420 0.00 655 74.53 890 88.20
425 0.00 660 81.51 895 88.70
430 0.00 665 84.80 900 87.68