PATENT CLAIM ANALYSIS

Application Number: 15759682
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-02
Patent Classification: ["396", "384000"]

Abstract:
A finder optical system is achieved in which object images can be more easily observed. A finder optical system includes an image-erecting member, which erects an object image formed by an objective optical system, provided on an optical path from the object side toward an eyepiece side, wherein the image-erecting member is formed as a penta roof prism provided with a first reflection surface and a second reflection surface, which define a roof reflection surface that reflects an incident light bundle emanated from the object, and the first reflection surface and the second reflection surface are configured as total-reflection surfaces that totally reflect the light bundle including the object image.

Claim (Index 3):
The finder optical system according to  claim 1 , wherein the following condition (2) is satisfied:\n R 1 Total /R 2 Total >1.05\u2003\u2003(2), wherein R 1 Total  designates an accumulated value of the average reflectance, with respect to light having a wavelength 400 nm through 450 nm, of reflection surfaces in the optical path on the eyepiece side from the objective optical system other than the first and second reflection surfaces; and R 2 Total  designates an accumulated value of the average reflectance, with respect to light having a wavelength 500 nm through 650 nm, of reflection surfaces in the optical path on the eyepiece side from the objective optical system other than the first and second reflection surfaces.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 90.0
- Lexical Diversity: 1.95
- Patent Class: 396.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['09708045', '14108586', '09978542', '10307352', '14189718']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7526300258627845
- 35 USC 102 Novelty (BERT): 0.5240191123619069
- Combined Prediction Score: 0.7297689345126968
- Mean Citation Score: 279.15900800000003
- Max Citation Score: 320.4191
- Similarity Product: 191.71439965915084

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