Princeton Instruments PI-MAX System Manual page 184

184
C-Mount (microscopy) Adapter: accepts standard C-mount threaded lenses.
Note: C-mount detectors are shipped with a dust cover lens installed. Although this
lens is capable of providing surprisingly good images, its throughput is low and the
image quality is not as good as can be obtained with a high-quality camera lens.
Users should replace the dust-cover lens with their own high-quality laboratory lens
before making "real" measurements.
Focal Depth (distance from adapter flat to photocathode surface)
Spectroscopy: 0.894"
F-Mount: 46.5 mm
C-Mount: 17.5 mm (0.690")
Vignetting: With fiber optic coupling there is no vignetting. With a 1024 × 256 array,
Gen II Spatial Resolution
Gen II High Res Spatial Resolution
Gen III Spatial Resolution
Geometric Distortion: typically < 1 pixel
Sensitivity: Variable intensifier gain adjustment (via software) allows sensitivities from
Gating ON/OFF Ratio
Response Linearity: Better than 1% for the upper 95% of range in ungated operation.
Photocathode Dark Charge (EBI): Red-blue enhanced, < 5 counts/pixel-second;
Phosphor Decay: 2 msec P43 standard, 1 µsec P46 phosphor is optional
Spectral Range
Nonuniformity: Typically 12% pk-pk for Gen II 18 mm intensifiers, 16% pk-pk for
PI-MAX/PI-MAX2 System Manual
which has a width of 26 mm, pixels that fall beyond the 18 mm or 25 mm width
(depending on intensifier width) of the intensifier will not be illuminated.
1:1 coupling: typically 70 µm spot size FWHM
1.27:1 coupling: typically 55 µm spot size FWHM
1:1 coupling: typically 45 µm spot size FWHM
1.27:1 coupling: typically 40 µm spot size FWHM
1:1 coupling: typically 42 µm spot size FWHM
1.27:1 coupling: typically 38 µm spot size FWHM
1-80 counts per photoelectron. Some phosphor choices may result in lower
values.
Visible (550 nm): 5 x 10
4
UV (250 nm): 10
:1 with photocathode gating only; 10
MCP bracket pulsing typical.
Slightly non-linear response at lower 5% of range, due to phosphor nonlinearity.
Red-enhanced, < 15 counts/pixel-second
Gen II: Red-blue enhanced, 180-900 nm; Red enhanced, 360-920 nm
Gen III: HQ, 450-900 nm (3 dB cutoff wavelengths); HQ (Blue), 375-900 nm
Gen II 25 mm intensifiers
6
:1 typical
Version 5.F
6
:1 with supplemental