Kopp 5850  
Note: Graph and tabular data at 3.94 mm
Filter Specifications
Transmission must be > 82% at 365 nm 
Transmission must be > 70% at 405 nm
Physical Properties
Nominal Thickness Range 3.5 - 4.5 mm
Refractive Index nD = 1.52
Density 2.51 g/cm3
Thermal Linear Expansion 92E-7 /ēC (30-300 ēC)
Strain Temperature 471 ēC
Annealing Temperature 509 ēC
Deformation Temperature 683 ēC
                   
    Kopp 5850  
Wavelength Transmission Wavelength Transmission Wavelength Transmission
(nm) (%) (nm) (%) (nm) (%)
200 0.00 435 58.57 670 0.04
205 0.00 440 54.23 675 0.13
210 0.00 445 49.29 680 0.51
215 0.00 450 43.67 685 1.77
220 0.00 455 38.09 690 5.13
225 0.00 460 31.95 695 11.86
230 0.00 465 25.24 700 22.06
235 0.00 470 18.36 705 34.30
240 0.00 475 12.45 710 46.58
245 0.00 480 8.05 715 57.52
250 0.00 485 4.95 720 66.50
255 0.00 490 2.95 725 73.17
260 0.00 495 1.82 730 78.00
265 0.00 500 1.18 735 81.40
270 0.00 505 0.67 740 83.69
275 0.00 510 0.35 745 85.22
280 0.00 515 0.19 750 86.12
285 0.00 520 0.10 755 86.74
290 0.00 525 0.06 760 87.23
295 0.07 530 0.04 765 87.35
300 0.64 535 0.03 770 87.40
305 3.06 540 0.03 775 87.50
310 9.14 545 0.05 780 87.53
315 19.36 550 0.09 785 87.43
320 32.31 555 0.14 790 87.38
325 45.25 560 0.16 795 87.41
330 56.87 565 0.11 800 87.26
335 66.07 570 0.05 805 87.30
340 72.87 575 0.02 810 87.20
345 77.74 580 0.00 815 87.14
350 80.78 585 0.00 820 87.04
355 83.52 590 0.00 825 87.05
360 84.77 595 0.00 830 86.94
365 85.34 600 0.00 835 86.87
370 85.22 605 0.00 840 87.06
375 84.67 610 0.00 845 86.81
380 83.90 615 0.00 850 86.75
385 84.19 620 0.00 855 86.56
390 84.32 625 0.00 860 86.43
395 83.33 630 0.00 865 86.39
400 81.57 635 0.00 870 86.05
405 79.39 640 0.00 875 86.11
410 77.07 645 0.00 880 86.79
415 74.11 650 0.00 885 85.33
420 71.02 655 0.00 890 86.77
425 67.18 660 0.00 895 86.69
430 63.10 665 0.01 900 85.50