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 5):
The projection optical system according to  claim 1 , wherein Conditional Expression (4) is satisfied\n 0 <T 2 /T 1<5 \u2003\u2003(4) where\n T 1  is a total of a distance from a position of the image light flux reflected by the first mirror farthest from the optical axis in a short-side direction of the image display element to the optical axis and a distance from a position of the image light flux reflected by the second mirror farthest from the optical axis in the short-side direction of the image display element to the optical axis, and \n T 2  is an optical path length of the principal ray from a lens located closest to the projection surface among the plurality of the lenses, to the first mirror.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 88.0
- Lexical Diversity: 2.29032
- Patent Class: 353.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15753912', '15348700', '14742967', '14829669', '15633421']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7294880785193347
- 35 USC 102 Novelty (BERT): 0.488348404659534
- Combined Prediction Score: 0.7053741111333547
- Mean Citation Score: 221.565688
- Max Citation Score: 227.11583
- Similarity Product: 174.0147289089167

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

Dataset: test