Hartmann masks
Flexible Optical offers calibrated Hartmann masks with square and circular apertures with orthogonal and hexagonal geometries. Masks are fabricated in glass and coated with patterned aluminum. Since the holes are positioned with very high precision and aberration of the mask is negligible, these masks can be used for absolute wavefront sensing, without calibration on a reference light beam.
| Material | Geometry | Aperture size | Subapertures | ||
|---|---|---|---|---|---|
| Number | Type | Diameter | |||
| Glass | Orthogonal | 7 mm | 64 | Circular | 200 µm |
| Glass | Orthogonal | 7 mm | 64 | Circular | 300 µm |
| Glass | Orthogonal | 7 mm | 64 | Circular | 450 µm |
| Glass | Orthogonal | 7 mm | 64 | Square | 200 µm |
| Glass | Orthogonal | 7 mm | 64 | Square | 300 µm |
| Glass | Orthogonal | 7 mm | 64 | Square | 450 µm |
| Glass | Orthogonal | 3.5 mm | 36 | Circular | 200 µm |
| Glass | Orthogonal | 3.5 mm | 36 | Circular | 300 µm |
| Glass | Orthogonal | 3.5 mm | 49 | Circular | 200 µm |
| Glass | Orthogonal | 3.5 mm | 49 | Circular | 300 µm |
| Glass | Orthogonal | 3.5 mm | 64 | Circular | 200 µm |
| Glass | Orthogonal | 3.5 mm | 64 | Circular | 300 µm |
| Glass | Orthogonal | 3.5 mm | 81 | Circular | 200 µm |
| Glass | Hexagonal | 3.5 mm | 37 | Circular | 300 µm |
| Fused silica | Hexagonal | 3.5 mm | 37 | Circular | 200 µm |
| Fused silica | Hexagonal | 3.5 mm | 61 | Circular | 200 µm |
| Fused silica | Hexagonal | 3.5 mm | 91 | Circular | 200 µm |
| Fused silica | Hexagonal | 3.5 mm | 127 | Circular | 100 µm |
| Fused silica | Hexagonal | 3.5 mm | 169 | Circular | 100 µm |
Size of each mask is 10x10 mm