Table 2.
The photometric and colorimetric parameters (transmittance and color) for standard illuminant D65 and the low-vision filters analyzed. * represents analysis from ANSI C78.377-2017 [39] and # indicates that the results obtained with the TM-30 standard [34] should be considered with caution. + indicates that a filter was not evaluated since it is a standard filter (AR means antireflection coating).
| CCT (K) | CIE 13.3 CRI |
x | y | Rf | Rg | Rf,h1 | Rcs,h1 (%) | T (%) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| #1 | D65 | 6498 | 100 | 0.3128 | 0.3291 | 100 | 100 | 100 | 0 | --- | ||
| D65 and AVS FILTERS | #2 | C1 | 5006 | 91 | 0.3486 | 0.3928 | 90 | 92 | 91 | −4 | 92.39 | |
| #3 | FPF-400 | 6085 | 98 | 0.3195 | 0.3423 | 96 | 98 | 97 | −1 | 95.02 | * | |
| #4 | FPF-450 | 3607 | 78 | 0.4318 | 0.4801 | 69 | 72 | 80 | −6 | 71.88 | * | |
| #5 | FPF-450XD | 4203 | 84 | 0.3898 | 0.4485 | 76 | 81 | 87 | −1 | 39.01 | * | |
| #6 | FPF-500 | 3674 | 85 | 0.4139 | 0.4390 | 88 | 90 | 87 | −7 | 79.09 | * | |
| #7 | FPF-511 | 2664 | 86 | 0.4864 | 0.4530 | 74 | 75 | 81 | −6 | 49.46 | * | |
| #8 | FPF-527 | 1830 | 77 | 0.5388 | 0.4005 | 82 | 92 | 72 | −13 | 35.93 | * | |
| #9 | FPF-550 | 1262 | 63 | 0.6179 | 0.3748 | 64 | 83 | 54 | −23 | 24.03 | * | |
| #10 | FPF-585 | --- | --- | 0.6634 | 0.3232 | 7 | 82 | 0 | 40 | 9.44 | # | |
| #11 | FPF-600 | --- | --- | 0.6811 | 0.3015 | 5 | 89 | 0 | 41 | 7.12 | # | |
| #12 | GLARE-CUTTER | 2060 | 78 | 0.4765 | 0.3545 | 84 | 106 | 88 | −4 | 15.59 | * | |
| D65 and ESSILOR FILTERS | #2 | BLX | 1346 | 50 | 0.5733 | 0.3486 | 30 | 108 | 12 | −32 | 25.47 | * |
| #3 | LUMIOR 1 | 3513 | 81 | 0.4335 | 0.4685 | 69 | 73 | 80 | −5 | 59.04 | * | |
| #4 | LUMIOR 2 | 3078 | 81 | 0.4636 | 0.4710 | 63 | 66 | 76 | −5 | 48.31 | * | |
| #5 | LUMIOR 3 | 2286 | 88 | 0.5169 | 0.4450 | 68 | 68 | 82 | −4 | 18.28 | ||
| #6 | LUMIOR ORANGE | 2378 | 84 | 0.5036 | 0.4388 | 71 | 74 | 75 | −9 | 45.98 | ||
| #7 | RT3 | 1262 | 60 | 0.6126 | 0.3697 | 57 | 93 | 38 | −24 | 5.13 | * | |
| #8 | RT4 | 1154 | 58 | 0.6302 | 0.3616 | 57 | 91 | 47 | −25 | 3.82 | * | |
| #9 | SOLEIL | 4047 | 81 | 0.4001 | 0.4585 | 75 | 79 | 83 | −6 | 79.54 | * | |
| D65 and HOYA FILTERS | #2 | CONBRO | 2603 | 97 | 0.4740 | 0.4227 | 91 | 94 | 94 | 1 | 10.84 | |
| #3 | CONCOP | 2452 | 87 | 0.4948 | 0.4359 | 88 | 87 | 86 | −6 | 32.30 | ||
| #4 | CONGRE | 5612 | 88 | 0.3294 | 0.3959 | 89 | 90 | 93 | −2 | 37.73 | * | |
| #5 | CONORA | 2955 | 88 | 0.4464 | 0.4178 | 91 | 96 | 89 | −6 | 58.06 | ||
| #6 | CONPUR | 4760 | 79 | 0.3463 | 0.3119 | 88 | 106 | 84 | 7 | 23.27 | * | |
| #7 | CONYEL | 4325 | 78 | 0.3858 | 0.4570 | 72 | 76 | 81 | −6 | 88.56 | * | |
| D65 and ML FILTERS | #2 | F400 | 5837 | 98 | 0.3248 | 0.3456 | 97 | 99 | 98 | 0 | 88.10 | |
| #3 | F450 | 3805 | 74 | 0.4211 | 0.4843 | 65 | 68 | 76 | −7 | 80.39 | * | |
| #4 | F500 | 3187 | 78 | 0.4506 | 0.4591 | 84 | 86 | 82 | −9 | 69.30 | * | |
| #5 | F511 | 2199 | 69 | 0.5317 | 0.4527 | 64 | 61 | 72 | −12 | 50.54 | * | |
| #6 | F527 | 1812 | 67 | 0.5624 | 0.4265 | 65 | 61 | 66 | −15 | 40.58 | * | |
| #7 | F550 | 1188 | 54 | 0.6269 | 0.3663 | 54 | 85 | 38 | −31 | 23.51 | * | |
| #8 | C1 | 4181 | 89 | 0.3811 | 0.4069 | 92 | 94 | 91 | −5 | 79.63 | * | |
| #9 | LLR | 5151 | 93 | 0.3432 | 0.3820 | 93 | 95 | 93 | −3 | 88.50 | * | |
| #10 | POL1 | 6715 | 95 | 0.3094 | 0.3259 | 94 | 101 | 92 | 4 | 21.81 | ||
| #11 | POL3 | 7574 | 96 | 0.2962 | 0.3214 | 93 | 100 | 90 | 6 | 11.61 | * | |
| D65 and PRATS FILTERS | #2 | F400 | 6315 | 99 | 0.3156 | 0.3341 | 98 | 99 | 99 | 0 | 93.06 | |
| #3 | F450 | 3945 | 74 | 0.4135 | 0.4868 | 68 | 70 | 78 | −7 | 83.00 | * | |
| #4 | F500 | 2880 | 78 | 0.4746 | 0.4632 | 81 | 82 | 82 | −9 | 64.84 | * | |
| #5 | F511 | 2103 | 66 | 0.5406 | 0.4493 | 53 | 49 | 66 | −14 | 48.70 | * | |
| #6 | F511BROWN | 2347 | 85 | 0.5174 | 0.4554 | 68 | 69 | 88 | 0 | 12.78 | ||
| #7 | F527 | 1194 | 80 | 0.6281 | 0.3689 | 75 | 61 | 72 | −12 | 5.04 | * | |
| #8 | F550 | 1425 | 49 | 0.6025 | 0.3954 | 39 | 26 | 37 | −26 | 31.23 | * | |
| #9 | F585 | 1106 | 43 | 0.6394 | 0.3586 | # | ||||||
| #10 | C1 | 4196 | 96 | 0.3711 | 0.3668 | 96 | 99 | 96 | −3 | 73.34 | ||
| #11 | NOAR | --- | --- | --- | --- | --- | --- | --- | --- | --- | + | |
| D65 and ZEISS FILTERS | #2 | F-540C | 2530 | 70 | 0.5086 | 0.4704 | 61 | 59 | 74 | −11 | 58.06 | * |
| #3 | F-560C | 2114 | 66 | 0.5397 | 0.4500 | 55 | 50 | 67 | −13 | 48.10 | * | |
| #4 | F-580C | 1380 | 59 | 0.6035 | 0.3866 | 62 | 80 | 56 | −22 | 28.03 | * | |
| #5 | F-60C | 1323 | 76 | 0.5925 | 0.3631 | 62 | 123 | 47 | −12 | 3.88 | * | |
| #6 | F-80C | 1504 | 73 | 0.5883 | 0.3967 | 79 | 87 | 75 | −12 | 10.03 | * | |
| #7 | F-90C | 1215 | 74 | 0.6128 | 0.3592 | 52 | 136 | 36 | −16 | 2.99 | * |
Abbreviations: CCT, correlated color temperature; CIE, Commission International de l’Eclairage; CRI, Color Rendering Index; Rf, Fidelity Index; Rg, Gamut Index; T, transmittance.