|
 |
 |
|||||
|
 |
|
|||||
|
Head
Mounted System•Options |
|
|||||
|
•OverviewTechnical
Specifications•Software |
|
|||||
|
|
||||||
| Technical Specifications |
| EyeLink 1000 / 2K Specifications | ||
| Feature | Tower Mount | Desktop Mount |
| Average Accuracy | down to 0.15° (0.25° to 0.5° typical) | Same as Tower Mount |
| Sampling rate |
EyeLink 1000: 1000 Hz monocular EyeLink 2K: 2000 Hz monocular |
EyeLink 1000: 1000 Hz mono / 500 Hz binoc EyeLink 2K: 2000 Hz mono / 1000 Hz binoc |
| End-to-End
Sample Delay Monocular |
< 1.4 msec @ 2000 Hz; 1.8 msec @ 1000 Hz | Same as Tower Mount |
| Binocular |
Not Available | < 2.6 msec @ 1000 Hz; 4.8 msec @ 500 Hz. |
| Spatial Resolution | < 0.01° RMS @ 1000 Hz, 0.02° RMS @ 2000 Hz | Same as Tower Mount |
| Eye Tracking Principal
|
Dark Pupil - Corneal Reflection | Same as Tower Mount |
| Pupil Detection Algorithms |
Centroid or Ellipse Fitting | Same as Tower Mount |
| Pupil Size Resolution | 0.2% of diameter | Same as Tower Mount |
| Gaze Tracking Range | 55° Horizontal, 45°
Vertical |
32° Horizontal, 25° Vertical |
| Allowed Head Movement | 50 mm Horizontal and Vertical,
20 mm Depth |
Same as Tower Mount |
| Glasses Compatibility |
Good | Excellent |
| Online Event Parsing | Fixation / Saccade / Blink / Fixation Update | Same as Tower Mount |
| Realtime Operator Feedback | Eye position cursor or position traces. Camera images and tracking status. | Same as Tower Mount |
| Eye - Camera distance |
Fixed
at about 38 cm |
Between 40 - 70 cm |
| Eye Illumination |
910 nm, Class 1 LED Product,
<1.0 mW/cm2 in standard configuration |
890 nm, Class 1 LED Product, <1.0 mW/cm2 in standard configuration |
| Digital Data Access | Ethernet | Ethernet |
| Analog Output | Optional PCI card | Optional PCI card |
| Response Box | 7 Button USB response pad included | 7 Button USB response pad included |
| Host Operating System | DOS- RTOS | DOS- RTOS |
| Display Operating System | Windows, Linux, Mac OSX, Mac OS9, DOS | Windows, Linux, Mac OSX, Mac OS9, DOS |
| Approvals | FCC and CISPR Class A, 60950-1 ITE Equipment | Same as Tower Mount |
| (1) Measured
with real eye fixations at multiple screen positions (2) Native sampling rate. 250 Hz and 500 Hz downsampling available (3) Measured from an actual physical event to availability of first data sample that registered the event on the Display / Subject PC via Ethernet or Analog output. If enabled, host PC filtering adds one sample extra delay for each filtering level." (4) Measured with an artificial pupil (5) Pupil Only tracking mode is available for use in head fixed conditions (6) Binocular tracking with desktop mount can reduce allowed head movement to approx. 25 mm Horizontal and Vertical |
|
||||||||