Kopp 9780  
Note: Graph and tabular data at 4.90 mm
Filter Specifications
Transmission at 550 nm must be between 55% and 70% 
Difference between 15% and 60% transmission must 40 - 50 nm
Physical Properties
Nominal Thickness Range 4.9 - 5.1 mm
Refractive Index nD = 1.56
Density 2.72 g/cm3
Thermal Linear Expansion 98E-7 /ēC (30-300 ēC)
Strain Temperature 481 ēC
Annealing Temperature 508 ēC
Deformation Temperature 624 ēC
                   
                   
    Kopp 9780  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 80.77 670 0.00
205 0.00 440 81.36 675 0.00
210 0.00 445 81.61 680 0.00
215 0.00 450 81.98 685 0.00
220 0.00 455 82.26 690 0.00
225 0.00 460 82.58 695 0.00
230 0.00 465 82.70 700 0.00
235 0.00 470 82.87 705 0.00
240 0.00 475 82.85 710 0.00
245 0.00 480 82.97 715 0.00
250 0.00 485 82.89 720 0.00
255 0.00 490 82.68 725 0.00
260 0.00 495 82.50 730 0.00
265 0.00 500 82.04 735 0.00
270 0.00 505 81.30 740 0.00
275 0.00 510 80.23 745 0.00
280 0.00 515 78.85 750 0.00
285 0.00 520 77.03 755 0.00
290 0.00 525 74.92 760 0.00
295 0.00 530 72.05 765 0.00
300 0.00 535 68.70 770 0.00
305 0.00 540 64.74 775 0.00
310 0.00 545 60.29 780 0.00
315 0.00 550 55.20 785 0.00
320 0.00 555 49.66 790 0.00
325 0.00 560 43.80 795 0.00
330 0.00 565 37.81 800 0.00
335 0.00 570 31.87 805 0.00
340 0.00 575 26.19 810 0.00
345 0.00 580 20.97 815 0.00
350 0.06 585 16.27 820 0.00
355 0.49 590 12.27 825 0.00
360 2.26 595 8.96 830 0.00
365 6.54 600 6.34 835 0.00
370 13.83 605 4.33 840 0.00
375 23.49 610 2.87 845 0.00
380 34.10 615 1.83 850 0.00
385 44.50 620 1.13 855 0.00
390 53.70 625 0.68 860 0.00
395 61.29 630 0.39 865 0.00
400 67.12 635 0.22 870 0.00
405 71.41 640 0.12 875 0.00
410 74.44 645 0.06 880 0.00
415 76.60 650 0.03 885 0.00
420 77.96 655 0.02 890 0.00
425 79.21 660 0.01 895 0.00
430 80.20 665 0.00 900 0.00