《目镜视场角与线视场换算公式FN=2*EFL*tan(0.5*FOV)》
tan(0.5*FOV)=FN/2/EFL
FOV为全视场角
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 5 | 10 | 50 | 0.1 | 11.42 |
| 5 | 11 | 50 | 0.11 | 12.55 |
| 5 | 12 | 50 | 0.12 | 13.69 |
| 5 | 13 | 50 | 0.13 | 14.81 |
| 5 | 14 | 50 | 0.14 | 15.94 |
| 5 | 15 | 50 | 0.15 | 17.06 |
| 5 | 16 | 50 | 0.16 | 18.18 |
| 5 | 17 | 50 | 0.17 | 19.30 |
| 5 | 18 | 50 | 0.18 | 20.41 |
| 5 | 19 | 50 | 0.19 | 21.52 |
| 5 | 20 | 50 | 0.2 | 22.62 |
| 5 | 21 | 50 | 0.21 | 23.72 |
| 5 | 22 | 50 | 0.22 | 24.81 |
| 5 | 23 | 50 | 0.23 | 25.91 |
| 5 | 24 | 50 | 0.24 | 26.99 |
| 5 | 25 | 50 | 0.25 | 28.07 |
| 5 | 26 | 50 | 0.26 | 29.15 |
| 5 | 26.5 | 50 | 0.265 | 29.68 |
| 5 | 27 | 50 | 0.27 | 30.22 |
| 5 | 28 | 50 | 0.28 | 31.28 |
| 5 | 29 | 50 | 0.29 | 32.34 |
| 5 | 30 | 50 | 0.3 | 33.40 |
| 5 | 31 | 50 | 0.31 | 34.45 |
| 5 | 32 | 50 | 0.32 | 35.49 |
| 5 | 33 | 50 | 0.33 | 36.53 |
| 5 | 34 | 50 | 0.34 | 37.56 |
| 5 | 35 | 50 | 0.35 | 38.58 |
| 5 | 36 | 50 | 0.36 | 39.60 |
| 5 | 37 | 50 | 0.37 | 40.61 |
| 5 | 38 | 50 | 0.38 | 41.61 |
| 5 | 39 | 50 | 0.39 | 42.61 |
| 5 | 40 | 50 | 0.4 | 43.60 |
| 5 | 41 | 50 | 0.41 | 44.59 |
| 5 | 42 | 50 | 0.42 | 45.56 |
| 5 | 43 | 50 | 0.43 | 46.54 |
| 5 | 44 | 50 | 0.44 | 47.50 |
| 5 | 45 | 50 | 0.45 | 48.46 |
| 5 | 46 | 50 | 0.46 | 49.40 |
| 5 | 47 | 50 | 0.47 | 50.35 |
| 5 | 48 | 50 | 0.48 | 51.28 |
| 5 | 49 | 50 | 0.49 | 52.21 |
| 5 | 50 | 50 | 0.5 | 53.13 |
| 5 | 51 | 50 | 0.51 | 54.04 |
| 5 | 52 | 50 | 0.52 | 54.95 |
| 5 | 53 | 50 | 0.53 | 55.85 |
| 5 | 54 | 50 | 0.54 | 56.74 |
| 5 | 55 | 50 | 0.55 | 57.62 |
| 5 | 56 | 50 | 0.56 | 58.50 |
| 5 | 57 | 50 | 0.57 | 59.37 |
| 5 | 58 | 50 | 0.58 | 60.23 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 10 | 10 | 25 | 0.2 | 22.62 |
| 10 | 11 | 25 | 0.22 | 24.81 |
| 10 | 12 | 25 | 0.24 | 26.99 |
| 10 | 13 | 25 | 0.26 | 29.15 |
| 10 | 14 | 25 | 0.28 | 31.28 |
| 10 | 15 | 25 | 0.3 | 33.40 |
| 10 | 16 | 25 | 0.32 | 35.49 |
| 10 | 17 | 25 | 0.34 | 37.56 |
| 10 | 18 | 25 | 0.36 | 39.60 |
| 10 | 19 | 25 | 0.38 | 41.61 |
| 10 | 20 | 25 | 0.4 | 43.60 |
| 10 | 21 | 25 | 0.42 | 45.56 |
| 10 | 22 | 25 | 0.44 | 47.50 |
| 10 | 23 | 25 | 0.46 | 49.40 |
| 10 | 24 | 25 | 0.48 | 51.28 |
| 10 | 25 | 25 | 0.5 | 53.13 |
| 10 | 26 | 25 | 0.52 | 54.95 |
| 10 | 26.5 | 25 | 0.53 | 55.85 |
| 10 | 27 | 25 | 0.54 | 56.74 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 12.5 | 10 | 20 | 0.25 | 28.07 |
| 12.5 | 11 | 20 | 0.275 | 30.75 |
| 12.5 | 12 | 20 | 0.3 | 33.40 |
| 12.5 | 13 | 20 | 0.325 | 36.01 |
| 12.5 | 14 | 20 | 0.35 | 38.58 |
| 12.5 | 15 | 20 | 0.375 | 41.11 |
| 12.5 | 16 | 20 | 0.4 | 43.60 |
| 12.5 | 17 | 20 | 0.425 | 46.05 |
| 12.5 | 18 | 20 | 0.45 | 48.46 |
| 12.5 | 19 | 20 | 0.475 | 50.82 |
| 12.5 | 20 | 20 | 0.5 | 53.13 |
| 12.5 | 21 | 20 | 0.525 | 55.40 |
| 12.5 | 22 | 20 | 0.55 | 57.62 |
| 12.5 | 23 | 20 | 0.575 | 59.80 |
| 12.5 | 24 | 20 | 0.6 | 61.93 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 15 | 10 | 16.67 | 0.3 | 33.40 |
| 15 | 11 | 16.67 | 0.33 | 36.53 |
| 15 | 12 | 16.67 | 0.36 | 39.60 |
| 15 | 13 | 16.67 | 0.39 | 42.61 |
| 15 | 14 | 16.67 | 0.42 | 45.56 |
| 15 | 15 | 16.67 | 0.45 | 48.46 |
| 15 | 16 | 16.67 | 0.48 | 51.28 |
| 15 | 17 | 16.67 | 0.51 | 54.04 |
| 15 | 18 | 16.67 | 0.54 | 56.74 |
| 15 | 19 | 16.67 | 0.57 | 59.37 |
| 15 | 20 | 16.67 | 0.6 | 61.93 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 16 | 10 | 15.625 | 0.32 | 35.49 |
| 16 | 11 | 15.625 | 0.352 | 38.78 |
| 16 | 12 | 15.625 | 0.384 | 42.01 |
| 16 | 13 | 15.625 | 0.416 | 45.17 |
| 16 | 14 | 15.625 | 0.448 | 48.26 |
| 16 | 15 | 15.625 | 0.48 | 51.28 |
| 16 | 16 | 15.625 | 0.512 | 54.22 |
| 16 | 17 | 15.625 | 0.544 | 57.09 |
| 16 | 18 | 15.625 | 0.576 | 59.88 |
| 16 | 19 | 15.625 | 0.608 | 62.60 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 20 | 2 | 12.5 | 0.08 | 9.15 |
| 20 | 3 | 12.5 | 0.12 | 13.69 |
| 20 | 4 | 12.5 | 0.16 | 18.18 |
| 20 | 5 | 12.5 | 0.2 | 22.62 |
| 20 | 6 | 12.5 | 0.24 | 26.99 |
| 20 | 7 | 12.5 | 0.28 | 31.28 |
| 20 | 8 | 12.5 | 0.32 | 35.49 |
| 20 | 9 | 12.5 | 0.36 | 39.60 |
| 20 | 10 | 12.5 | 0.4 | 43.60 |
| 20 | 11 | 12.5 | 0.44 | 47.50 |
| 20 | 12 | 12.5 | 0.48 | 51.28 |
| 20 | 13 | 12.5 | 0.52 | 54.95 |
| 20 | 14 | 12.5 | 0.56 | 58.50 |
| 20 | 15 | 12.5 | 0.6 | 61.93 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 25 | 2 | 10 | 0.1 | 11.42 |
| 25 | 3 | 10 | 0.15 | 17.06 |
| 25 | 4 | 10 | 0.2 | 22.62 |
| 25 | 5 | 10 | 0.25 | 28.07 |
| 25 | 6 | 10 | 0.3 | 33.40 |
| 25 | 7 | 10 | 0.35 | 38.58 |
| 25 | 8 | 10 | 0.4 | 43.60 |
| 25 | 9 | 10 | 0.45 | 48.46 |
| 25 | 10 | 10 | 0.5 | 53.13 |
| 25 | 11 | 10 | 0.55 | 57.62 |
| 25 | 12 | 10 | 0.6 | 61.93 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 30 | 2 | 8.33 | 0.12 | 13.69 |
| 30 | 3 | 8.33 | 0.18 | 20.41 |
| 30 | 4 | 8.33 | 0.24 | 26.99 |
| 30 | 5 | 8.33 | 0.3 | 33.40 |
| 30 | 6 | 8.33 | 0.36 | 39.60 |
| 30 | 7 | 8.33 | 0.42 | 45.56 |
| 30 | 8 | 8.33 | 0.48 | 51.28 |
| 30 | 9 | 8.33 | 0.54 | 56.74 |
| 30 | 10 | 8.33 | 0.6 | 61.93 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 40 | 2 | 6.25 | 0.16 | 18.18 |
| 40 | 3 | 6.25 | 0.24 | 26.99 |
| 40 | 4 | 6.25 | 0.32 | 35.49 |
| 40 | 5 | 6.25 | 0.4 | 43.60 |
| 40 | 6 | 6.25 | 0.48 | 51.28 |
| 40 | 7 | 6.25 | 0.56 | 58.50 |
| 40 | 8 | 6.25 | 0.64 | 65.24 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 50 | 2 | 5.00 | 0.2 | 22.62 |
| 50 | 3 | 5.00 | 0.3 | 33.40 |
| 50 | 4 | 5.00 | 0.4 | 43.60 |
| 50 | 5 | 5.00 | 0.5 | 53.13 |
| 50 | 6 | 5.00 | 0.6 | 61.93 |
| Γ | FN | F=250/ Γ | tan(0.5*FOV)=FN/(2F) | FOV(全视场角°) |
| 60 | 2 | 4.17 | 0.24 | 26.99 |
| 60 | 3 | 4.17 | 0.36 | 39.60 |
| 60 | 4 | 4.17 | 0.48 | 51.28 |
| 60 | 5 | 4.17 | 0.6 | 61.93 |