PATENT CLAIM ANALYSIS

Application Number: 15906365
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-07
Patent Classification: ["353", "099000"]

Abstract:
A projection optical system is an optical system for projecting an image light flux formed in an image display element onto a projection surface, and includes a transmission optical system and a reflection optical system. The transmission optical system is located on an emission surface side of the image display element and includes a stop and a plurality of lenses. The reflection optical system includes a positive-power first mirror and a second mirror. Conditional Expression (1) is satisfied 0< TL/ft <10   (1) where ft is a focal length of the transmission optical system, and TL is a distance parallel to an optical axis of the transmission optical system from a position where the first mirror reflects a principal ray of the image light flux, to the image display element.

Claim (Index 1):
A projection optical system for projecting an image light flux formed in an image display element onto a projection surface, the projection optical system comprising:\n a transmission optical system that is located on an emission surface side of the image display element and includes a stop and a plurality of lenses; and a reflection optical system that includes a positive-power first mirror and a second mirror, the first mirror reflecting light output from the transmission optical system, the second mirror reflecting reflected light of the first mirror toward the projection surface, wherein Conditional Expression (1) is satisfied\n 0 <TL/ft< 10 \u2003\u2003(1) \n where\n ft is a focal length of the transmission optical system, and \n TL is a distance parallel to an optical axis of the transmission optical system from a position where the first mirror reflects a principal ray of the image light flux, which passes through a center in a long-side direction of the image display element and is projected onto the projection surface closest to a projection optical system side, to the image display element.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 88.0
- Lexical Diversity: 2.29032
- Patent Class: 353.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15753912', '15348700', '14742967', '14829669', '15633421']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7060693389883432
- 35 USC 102 Novelty (BERT): 0.4826560677822232
- Combined Prediction Score: 0.6837280118677312
- Mean Citation Score: 221.565688
- Max Citation Score: 227.11583
- Similarity Product: 180.8777433107149

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

Dataset: test