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