PATENT CLAIM ANALYSIS

Application Number: 15964867
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["348", "750000"]

Abstract:
In a projection system, a nonaxisymmetric aspheric surface is used as a surface that is located in a position where in a pencil of light of video image light that exits from each of two points in different corner regions in an image plane that is a light exiting plane of an image display apparatus, light components that should reach a viewer's eyes do not intersect one another, whereby the size of an optical system can be further reduced and the size of an overall apparatus can therefore be reduced with a variety of types of optical precision, such as the resolution and angle of view, maintained.

Claim (Index 1):
A virtual image display apparatus comprising:\n a video device that generates video image light; a light guide member that guides the video image light from the video device based on total reflection that occurs at a plurality of surfaces including a nonaxisymmetric curved surface and serves as part of an optical system to form an intermediate image in the light guide member; and a projection system that causes the video image light from the video device to enter the light guide member, wherein the projection system includes at least one nonaxisymmetric aspheric surface, and the one nonaxisymmetric aspheric surface is located in a position where in a pencil of light of video image light that exits from each of two points in different corner regions of a light exiting plane of the video device, light components that should reach a viewer's eyes do not intersect each other.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 91.0
- Lexical Diversity: 1.72727
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15368294', '15374656', '13353641', '14561976', '13949744']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6752845845996032
- 35 USC 102 Novelty (BERT): 0.5843403827065352
- Combined Prediction Score: 0.6661901644102964
- Mean Citation Score: 339.082636
- Max Citation Score: 479.72775
- Similarity Product: 475.92683507917815

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

Dataset: test