Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Static error tested without light under different visual angles (mm).
| Operator | Visual angle, degrees | ||
| 0 (Horizontal) | 45 (Oblique) | 90 (Vertical) | |
| 1 | 1.28 | 0.63 | 1.63 |
| 2 | 1.80 | 1.47 | 1.28 |
| 3 | 0.74 | 1.01 | 1.36 |
| 4 | 1.83 | 1.3 | 1.73 |
| 5 | 1.94 | 1.63 | 1.43 |
| 6 | 1.26 | 1.45 | 2.31 |
| 7 | 1.44 | 1.96 | 1.67 |
| Mean (SD) | 1.47 (0.42) | 1.35 (0.43) | 1.63 (0.34) |
