LBP2 User Guide Document No: 50306-001 Rev G 3/12/2020 Page 101
APPENDIX E Legacy -1550 Phosphor Coated
Cameras
Item
Camera SP503U-1550 SP620U-1550
NIR wavelengths, ½" format,
low resolution
NIR wavelengths, 1/1.8" format,
low resolution, adjustable ROI
and binning
Spectral Response 1440 - 1605nm 1440 - 1605nm
Maximum beam size 6.3mm W x 4.7mm H 7.1mm W x 5.4mm H
Pixel spacing¹ 9.9µm x 9.9µm 4.4µm x 4.4µm
Number of effective
pixels
Minimum system
dynamic range²
Linearity with Power ±5% ±5%
Spatial Uniformity ±5% ±5%
30 fps at full resolution
60 fps at 320 x 240
8 fps at full resolution
28 fps at 640 x 480
44 fps at 320 x 240
Gain control 43:1 manual 29:1 manual
Lowest measureable
signal
Dimensions and CCD
recess
96mm x 76mm x 16mm; 4.5mm
below surface
96mm x 76mm x 28mm; 4.5mm
below surface
Minimum host
system
requirements
Supports both Trigger In and Strobe Out
50W/cm² / 0.1J/cm² with all filters installed for <100ns pulse width⁴
Interline transfer progressive scan CCD
Pentium IV 1GHz (Dual-core & >2GHz for best performance), 1GB
Memory, USB2, Operating system: Windows 7
(1) Despite the small pixel size, the spatial resolution will not exceed 50µm due to
diffusion of the light by the phosphor coating.
(2) Signal to noise ratio is degraded due to the gamma of the phosphor's response.
Averaging or summing of up to 256 frames improves dynamic range by up to 16x = +24dB
(3) In normal (non-shuttered) camera operation, the frame rate is the fastest rate at which
the laser may pulse and the camera can still separate one pulse from the next. With
electronic shutter operation, higher rate laser pulses can be split out by matching the
laser repetition to the shutter speed.
(4) This is the damage threshold of the filter glass of the filters. Assuming all filters are
mounted with ND1 (red housing) filter in the front. Distortion of the beam may occur with
average power densities as low as 5W/cm²
±5% for beams larger than 0.6mm
30µs to multiple frame times
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