Table 5. Afocal relay and fundus imaging lens opto-mechanical tolerances.
Group | Element | Diameter (um) |
Element to
element roll (µm) |
Airspace
(µm) |
Decenter
(µm) |
Tilt
(arcmin) |
---|---|---|---|---|---|---|
Afocal relay | 1 | +0/-50 | 25 | 100 | 100 | 5 |
2 | +0/-100 | 25 | 100 | 100 | 5 | |
3 | +0/-50 | 25 | 100 | 100 | 5 | |
4 | +0/-100 | 25 | 100 | 100 | 5 | |
Fundus imaging lens | 1 | +0/-10 | - | 100 | 100 | 3 |
2 | +0/-10 | 15 | 30 | 25 | 3 | |
3 | +0/-30 | 25 | 100 | 25 | 3 | |
4 | +0/-20 | - | - | 100 | 3 |