PATENT CLAIM ANALYSIS

Application Number: 15860853
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["362", "607000"]

Abstract:
An imaging directional backlight apparatus including a waveguide, a light source array, for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure, in which the steps may further include extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. A rear reflector is arranged to receive light transmitted by the features and to provide polarization recirculation. Viewing windows are formed through imaging individual light sources and hence defines the relative positions of system elements and ray paths. Retarder stack arrangements are provided to increase the efficiency of polarization recirculation, reduce the visibility to damage and to reduce color changes with viewing angle.

Claim (Index 16):
A directional display apparatus comprising:\n a directional display device according to  claim 1 ; and\n a control system arranged to control the light sources.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 86.0
- Lexical Diversity: 1.61458
- Patent Class: 362.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13837466', '14186862', '15165960', '14993042', '15599189']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8790635383783653
- 35 USC 102 Novelty (BERT): 0.5370545945689079
- Combined Prediction Score: 0.8448626439974195
- Mean Citation Score: 423.6472360000001
- Max Citation Score: 444.59842
- Similarity Product: 349.8714496161353

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

Dataset: test