PATENT CLAIM ANALYSIS

Application Number: 16119422
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-03
Patent Classification: ["353", "101000"]

Abstract:
A projection system includes a first lens group that does not move when the projection magnification is changed with the aid of the zoom function, and the first lens group includes a correction lens group that is moved in the direction of the optical axis to correct worsened astigmatism. The projection system satisfies the following conditional expressions (1) and (2): |ΔBF20|< P ×FNO×√2  (1) 1.5<| f 1/ f|   (2) where P represents the pixel pitch in an image displayed by liquid crystal panels, FNO represents the F number of the entire lens system, ΔBF represents the amount of movement of the back focus position in a case where the correction lens group is moved by the amount of movement for correction of the aberration that changes when the temperature changes by 20° C., f represents the focal length of the entire lens system, and f1 represents the focal length of the correction lens group.

Claim (Index 9):
The projection-type image display apparatus according to claims, wherein the projection-type image display apparatus projects light having a luminous flux greater than or equal to 20 klm.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 96.0
- Lexical Diversity: 2.03529
- Patent Class: 353.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14456362', '14991248', '12698520', '15601606', '14288421']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7090243390090331
- 35 USC 102 Novelty (BERT): 0.5272123878001626
- Combined Prediction Score: 0.6908431438881459
- Mean Citation Score: 275.75077400000004
- Max Citation Score: 290.51453
- Similarity Product: 166.30650937885403

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