PATENT CLAIM ANALYSIS

Application Number: 15954156
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["353", "081000"]

Abstract:
Provided is a projection optical system that is a monofocal lens or a zoom lens that includes a first and a second optical system. The second optical system forms an intermediate image and the first optical system enlarges and projects the intermediate image. The first optical system includes a first-A optical system and a first-B optical system and includes a reflecting optical element. In response to the monofocal lens or the zoom lens, conditional formulas (1) and (2) are satisfied in an infinity in-focus state, 0.18<Ta/Tw<0.4 . . . (1), 1<fa/|fw|<15 . . . (2). In the conditional formulas (1) and (2), Ta is an on-axis distance in the first-A optical system, Tw is an on-axis distance in the projection optical system, fa is a focal length of the first-A optical system, and fw is a focal length of an entirety of the projection optical system.

Claim (Index 16):
The projection apparatus according to  claim 15 , wherein an angle between an optical axis in a light path from the image display surface to the projection optical system and an optical axis in the light path from the projection optical system to the enlargement side is in a range of 60 to 120 degrees.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 91.0
- Lexical Diversity: 2.96667
- Patent Class: 353.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15353437', '15265468', '15827228', '15391941', '14610227']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.742535137103134
- 35 USC 102 Novelty (BERT): 0.5066451328720069
- Combined Prediction Score: 0.7189461366800213
- Mean Citation Score: 262.364324
- Max Citation Score: 273.25214
- Similarity Product: 195.2530056984592

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

Dataset: test