Model T241 High Resolution Laser Scanning Sensor
to view in 3-D
The Tree-D T241 non-contact laser-based scanning sensor
uses optical triangulation to scan a bright laser spot
producing a high signal-to-ambient light level ratio.
This allows operation in full sunlight. Accuracies of
±0.003"are achieved depending on working distance.
Conventional "light shear" scanning systems
use laser line generator optics to spread the laser
energy out over a line. The T241 scans a single, bright
laser spot across the surface. Using a single moving
mirror, a line scan imager tracks the laser spot. This
produces laser intensity at any given surface point
tens to hundreds of times brighter than if it were spread
out over a long line.
The T241 contains its own temperature control system,
maintaining the laser and sensor circuitry to a narrow
temperature range. This ability to regulate internal
temperature maintains high sensor accuracy over the
entire working temperature range.
The scanning mirror is driven when commanded to scan.
Each T241 sensor contains an advanced RISC architecture
microcontroller that communicates to a data Concentrator
Computer through a high-speed serial connection. The
distance measurement samples are translated into X and
Y coordinates representing the surface of the object
being scanned. These coordinates are buffered on the
Concentrator Computer and made available as a server
process over Ethernet.