PATENT CLAIM ANALYSIS

Application Number: 16070782
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-02
Patent Classification: ["351", "206000"]

Abstract:
An apparatus ( 100 ) for deriving a gaze direction of a human eye ( 150 ) includes a light-guide optical element (LOE) ( 120 ) having pair of parallel faces ( 104 a ), ( 104 b ) deployed in facing relation to the eye ( 150 ). A coupling-in configuration, such as a set of partially-reflective surfaces ( 145 ), is associated with LOE ( 120 ) and configured for coupling-in a proportion of light incident on face ( 104 a ) so as to propagate within the LOE. Focusing optics ( 106 ) associated with LOE ( 120 ) converts sets of parallel light rays propagating within the LOE into converging beams of captured light which are sensed by an optical sensor ( 125 ). A processing system ( 108 ) processes signals from the optical sensor ( 125 ) to derive a current gaze direction of the eye. Despite the aperture-combining effect of the LOE, retinal images can be effectively recovered as the only image information brought to focus on the optical sensor.

Claim (Index 1):
An apparatus for deriving a gaze direction of a human eye, the apparatus comprising;\n (a) a light-guide optical element (LOE) formed from transparent material and having pair of parallel faces for guiding light by internal reflection, one of said parallel faces being deployed in facing relation to the eye; (b) a coupling-in configuration associated with said LOE and configured for coupling-in a proportion of light incident on one of said parallel faces within a coupling-in region so as to propagate within said LOE; (c) focusing optics associated with said LOE and configured for converting sets of parallel light rays propagating within said LOE into converging beams of captured light; (d) an optical sensor deployed for sensing said captured light; and (e) a processing system including at least one processor, said processing system being electrically associated with said optical sensor and configured so as to process signals from said optical sensor to derive a current gaze direction of the eye, wherein said coupling-in configuration is configured to generate rays propagating within said LOE, each ray having a direction indicative of a direction of incidence of a corresponding incident light ray, and wherein a plurality of spaced-apart parallel incident rays are combined into a single ray propagating within said LOE,

Metadata:
- Claim Count in Document: 13.0
- Percentile: 95.0
- Lexical Diversity: 1.95833
- Patent Class: 351.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15749511', '15978139', '15513288', '14903249', '13572650']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5604696045852415
- 35 USC 102 Novelty (BERT): 0.4772980838870358
- Combined Prediction Score: 0.552152452515421
- Mean Citation Score: 214.63838
- Max Citation Score: 227.36267
- Similarity Product: 168.91723057041466

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test