One of the several optical/arrays of camera available from ASL is the high speed stationary optics for use when there is no head movement. This small high speed optics and camera is securely attached to a tripod. Depending on the set up, the camera can be positioned directly under the viewing area or off to one side with a hot mirror reflecting the eye image back to the camera. This configuration is not desired for human participants.
The high speed optics are combined with the ASL EYE-TRAC® 7 Control unit.
|Spatial Resolution||0.25º visual angle|
|Temporal Resolution||120, 240 or 360HZ w/no loss of resolution|
|Visual Range||50º horizontal, 40º vertical|
|Distance optics to eye||12 to 20 inches (remote at 240 HZ)|
|Calibration points||User definable, 2 to 17|
|Accuracy||0.5º visual angle|
|Bright pupil/corneal reflection||Not affected by eyelashes or facial hair|
|Data output||Real-time analog and digital output, x y|
|Pupil size||Available real-time, digital only|
|Custom interfaces||ASL will supply a DLL and applicable source code upon request|
|Current interfaces||Current customers have interfaced to REX, TEMPO, CORTEX, MatLab and E-Prime|