眼动仪技术规格
EyeLink 3头部和眼睛跟踪器是一种全新的跟踪器，提供高速（高达1000 Hz）的凝视数据以及头部跟踪数据。有关EyeLink 3的技术规格，请参阅下文。 如有任何问题，请与我们联系，或索取报价。我们是来帮忙的。您还可以看到技术比较与EyeLink 1000 Plus，EyeLink Duo和EyeLink 3。
Sampling Rate
250/500/1000 Hz Monocular or Binocular
Eye Tracking Principle
Dark Pupil – Corneal Reflection
Pupil Detection Models
Centroid or Ellipse Fitting
Gaze Accuracy¹
0.5°
End-to-End Sample Delay²
M = 2.37 ms (SD < 0.5 ms) @ 1000 Hz;
M = 3.38 ms (SD < 1.1 ms) @ 500 Hz
Blink/Occlusion Recovery
1.0 ms @ 1000 Hz
Gaze Precision³
1000 Hz: 0.06°/0.03°/0.02° (Filter Off/Normal/High)
500 Hz: 0.05°/ 0.02°/0.01° (Filter Off/Normal/High)
Trackable Eye Rotation Range (Decoupled X/Y Rotations)
± 26° Horizontal, ± 17° Vertical in Pupil-CR Mode
± 30° Horizontal, ± 25° Vertical in Pupil-Only Mode
Gaze Tracking Range (Rectangular Area)
40° × 25° (Without Head Movements)
70° × 50° (With Head Movements)
Eye-to-Camera Distance
65 mm – 85 mm Effective Eye Distance
> 20 mm Mirror Clearance to Eyes
Fixed Focus
Eye Video Frame Rate
Configurable (1 to 500 fps)
Glasses Compatibility
Good (Glasses Dependent)
Pupil Size Resolution³
0.1% of Diameter
Head Tracking Data
NIR Marker and IMU Data Fused
Full 6DOF (Head Position: X, Y, Z; Head Rotation: Pitch, Yaw, Roll)
IMU only (Marker Free)
Head Rotation: Pitch, Yaw, Roll
Trackable Head Rotation
NIR Marker and IMU Data Fused
Pitch: ± 15°
Yaw: ± 38°
Roll: ± 50°
IMU only (Marker Free)
Unlimited
Trackable Head Position
NIR Marker and IMU Data Fused
X: ± 55 cm
Y: 76 cm from -28 to 48 cm @ 80 cm distance
Z: 30 to 120 cm for MRK3-120; 40 to 300 cm for MRK3-240
IMU only (Marker Free)
N/A
Online Eye Event Parsing
Fixation / Saccade / Blink / Fixation Update
EDF File and Link Data Types
Pixel Data: Gaze, Eye-in-Head, Head-in-Space;
Head Tracking Data: X, Y, Z (mm), Pitch, Yaw, Roll (angles);
Additional Data Types: Raw, HREF Eye Data, Pupil Size and Pupil Ellipse data, Buttons, Messages, Digital Inputs
Real-Time Operator Feedback
Eye position gaze cursor superimposed on static image or position traces with camera images and tracking status.
Specifications are preliminary and subject to change without notice.
¹ Measured with real eye fixations at multiple screen positions on a per subject basis.
² Time from physical event until first registered sample is available via Ethernet output.
Optional data filter algorithm adds one sample delay for each filtering level.
³ Measured with an artificial eye.