Characteristics of three typical configurations of FrontSurfer wavefront sensor are given in the table below. However, the system can be reconfigured according to the customer’s requirements by choosing a different camera, Hartmann mask or microlens array.
|
Parameter
|
Config. #1
|
Config. #2
|
Config. #3
|
|
Camera model
|
uEye UI-2210M
|
Basler A601f/A602f
|
uEye UI-2210M
|
|
Camera type
|
digital CCD
|
digital CMOS
|
digital CCD
|
|
Camera interface
|
USB2.0
|
Firewire
|
USB2.0
|
|
Array geometry
|
hexagonal
|
orthogonal
|
orthogonal
|
|
Array pitch
|
300 um
|
200 um
|
150 um
|
|
Array focal distance
|
~ 18 mm
|
7 mm
|
10 mm
|
|
Clear aperture
|
3.9 mm
|
≤ 4.5 mm
|
≤ 4.5 mm
|
|
Subapertures
|
127
|
≤ 400
|
≤ 700
|
|
Maximum tilt, fast mode
|
0.008 rad
|
0.014 rad
|
0.007 rad
|
|
Maximum tilt, slow mode
|
0.066 rad
|
N/A
|
N/A
|
|
Repeatability, RMS
|
λ/300*
|
λ/150*
|
λ/150*
|
|
Repeatability, P-V
|
λ/60*
|
λ/20*
|
λ/20*
|
|
Acquisition rate
|
≥ 75 fps
|
60 / ≥ 100 fps
|
≥ 75 fps |
|
Processing rate, fast mode
|
25 fps**
|
15 / 30 fps**
|
10 fps**
|
|
Processing rate, slow mode
|
1 fps**
|
N/A
|
N/A
|
|
Recommended Zernike terms
|
≤ 44
|
≤ 150
|
≤ 300
|
|
Wavelength
|
400...900 nm
|
400...1000nm
|
400...900nm
|
|
Absolute measurement
|
Yes
|
No
|
No
|
|
Reference measurement
|
Yes
|
Yes
|
Yes
|
*For λ= 633 nm
**For low-order aberration analysis on a PC with AMD Athlon XP1800+ processor and 256 MB RAM
|
