Kopp 3304  
Note: Graph and tabular data at 3.00 mm
Filter Specifications
Transmission at 560 nm must be 20 ± 1.1% 
Difference between 10% and 35% transmission must be > 55 nm
Physical Properties
Nominal Thickness Range 2.3 - 3.7 mm
Refractive Index nD = 1.52
Density 2.72 g/cm3
Thermal Linear Expansion 101E-7 /șC (30-300 șC)
Strain Temperature 437 șC
Annealing Temperature 473 șC
Deformation Temperature 652 șC
                   
    Kopp 3304  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 0.01 670 47.27
205 0.00 440 0.00 675 47.73
210 0.01 445 0.03 680 48.11
215 0.00 450 0.01 685 48.55
220 0.00 455 0.01 690 48.94
225 0.00 460 0.02 695 49.33
230 0.01 465 0.04 700 49.62
235 0.00 470 0.06 705 49.85
240 0.01 475 0.11 710 50.12
245 0.00 480 0.18 715 50.29
250 0.00 485 0.29 720 50.36
255 0.00 490 0.44 725 50.40
260 0.00 495 0.67 730 50.31
265 0.00 500 1.00 735 50.18
270 0.00 505 1.45 740 49.96
275 0.01 510 2.05 745 49.72
280 0.00 515 2.83 750 49.39
285 0.00 520 3.82 755 49.06
290 0.00 525 5.04 760 48.70
295 0.01 530 6.49 765 48.31
300 0.01 535 8.18 770 47.89
305 0.00 540 10.14 775 47.41
310 0.00 545 12.29 780 46.94
315 0.01 550 14.59 785 46.41
320 0.00 555 17.07 790 45.95
325 0.02 560 19.58 795 45.42
330 0.00 565 22.13 800 44.90
335 0.00 570 24.60 805 44.40
340 0.02 575 27.04 810 43.98
345 0.00 580 29.38 815 43.47
350 0.00 585 31.50 820 43.05
355 0.02 590 33.53 825 42.62
360 0.01 595 35.33 830 42.19
365 0.01 600 37.06 835 41.68
370 0.01 605 38.48 840 41.28
375 0.01 610 39.74 845 40.92
380 0.02 615 40.82 850 40.45
385 0.01 620 41.75 855 40.15
390 0.01 625 42.50 860 39.92
395 0.00 630 43.22 865 39.34
400 0.00 635 43.83 870 39.23
405 0.00 640 44.40 875 39.23
410 0.00 645 44.91 880 38.85
415 0.01 650 45.40 885 38.09
420 0.00 655 45.88 890 37.60
425 0.00 660 46.35 895 37.79
430 0.01 665 46.81 900 37.43