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Eye Tracker


Eye Tracker




Through its new strategic partner, Applied Science Laboratories (ASL), Ascension now offers the best eye and head tracking system in the world.

The highly developed, features-rich EYEHEAD™ system for use with head-mounted optics enables integration of eye and head position data -- thanks to DC magnetic tracking -- for real-time computation of eye-pointing angles. In short, an evaluator always knows where his subject is looking. By combining eye and head-tracking technologies, the evaluator can eliminate the need to reacquire the eye when the subject looks out of the tracking area and then returns. Eye fixation data is typically shown as a point-of-gaze cursor superimposed on a real-world object or computer graphics scene.



Factory integrated head/eye tracking
  • Easy to use and highly accurate.
6 degrees-of-freedom head tracking
  • Unrestricted eye tracking.
  • No operator intervention.
Remote pan/tilt
  • Operator never has to manually aim pan/tilt module.
  • Corrects for error by changing head position.
Automatic reacquisition
  • Data unaffected by sudden head movements or subject looking away.


ASL Models 501 & 504
Dimensions (HxWxD): 3" x 9.75" x 10.25"
Weight: 4.25 lbs
Power: 100-240 VAC; 25 watts
Display: 9" B/W Monitors for eye and scene cameras
HEAD MOUNTED OPTICS (501) / Remote Optics (504)
Sampling and Output Rates: 50 Hz or 60 Hz
120 Hz and 240 Hz (optional)
Measurement Principle: Pupil-corneal Reflection
System Accuracy: 0.5 degree visual angle
Resolution: 501: 0.1 degree visual angle
504: 0.25 degree visual angle
Head Movement: 501: Unlimited
504: 1 sq. foot
Visual Range: 50 degrees horizontally, 40 degrees vertically
Weight: 501: 8.5 oz. (includes headband, optics module monocle and scene camera
504: 2.5 lbs.


Price: Ask


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