PATENT CLAIM ANALYSIS

Application Number: 15945026
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["257", "089000"]

Abstract:
To provide an illumination method and a light-emitting device which are capable of achieving, under an indoor illumination environment where illuminance is around 5000 lx or lower when performing detailed work and generally around 1500 lx or lower, a color appearance or an object appearance as perceived by a person, will be as natural, vivid, highly visible, and comfortable as though perceived outdoors in a high-illuminance environment, regardless of scores of various color rendition metric. Light emitted from the light-emitting device illuminates an object such that light measured at a position of the object satisfies specific requirements. A feature of the light-emitting device is that light emitted by the light-emitting device in a main radiant direction satisfies specific requirements.

Claim (Index 89):
A light-emitting device incorporating at least a bluish purple or blue light-emitting element, wherein\n the light emitted from the light-emitting device in a main radiant direction satisfies (1)\u2032 and (2) below: (1)\u2032 if an a* value and a b* value in CIE 1976 L*a*b* color space of 15 Munsell renotation color samples from #01 to #15 listed below when mathematically assuming illumination by the light emitted from the light-emitting device in the radiant direction are respectively denoted by a* nSSL  and b* nSSL  (where n is a natural number from 1 to 15), and an a* value and a b* value in CIE 1976 L*a*b* color space of the 15 Munsell renotation color samples when mathematically assuming illumination by a reference light that is selected according to a correlated color temperature T SSL  (K) of the light emitted from the light-emitting device in the radiant direction are respectively denoted by a* nref  and b* nref  (where n is a natural number from 1 to 15), then each saturation difference \u0394C n  satisfies\n \u22122.7\u2264\u0394 C n \u226418.6 (where  n  is a natural number from 1 to 15): \n if a maximum saturation difference value is denoted by \u0394C max  and a minimum saturation difference value is denoted by \u0394C min , then a difference |\u0394C max \u2212\u0394C min | between the maximum saturation difference value and the minimum saturation difference value satisfies\n 3.0\u2264(|\u0394 C max \u2212\u0394C min |)\u226419.6, \n where \u0394C n =\u221a{(a* nSSL ) 2 +(b* nSSL ) 2 }\u2212\u221a{(a* nref ) 2 +(b* nref ) 2 }\n with the 15 Munsell renotation color samples being: \n #01 7.5P 4/10 \n #02 10PB 4/10 \n #03 5PB 4/12 \n #04 7.5B 5/10 \n #05 10BG 6/8 \n #06 2.5BG 6/10 \n #07 2.5G 6/12 \n #08 7.5GY 7/10 \n #09 2.5GY 8/10 \n #10 5Y 8.5/12 \n #11 10YR 7/12 \n #12 5YR 7/12 \n #13 10R 6/12 \n #14 5R 4/14 \n #15 7.5RP 4/12; and \n (2) if hue angles in a CIE 1976 L*a*b* color space of the 15 Munsell renotation color samples when mathematically assuming illumination by the light emitted from the light-emitting device in the radiant direction is denoted by \u03b8 nSSL  (degrees) (where n is a natural number from 1 to 15), and \n hue angles in a CIE 1976 L*a*b* color space of the 15 Munsell renotation color samples when mathematically assuming illumination by a reference light that is selected according to the correlated color temperature T SSL  (K) of the light emitted in the radiant direction are denoted by \u03b8 nref  (degrees) (where n is a natural number from 1 to 15), then an absolute value of each difference in hue angles |\u0394h n | satisfies\n 0\u2264|\u0394 h n \u22649.0 (degrees) (where  n  is a natural number from 1 to 15), \n \n where \u0394h n =\u03b8 nSSL \u2212\u03b8 nref .

Metadata:
- Claim Count in Document: 52.0
- Percentile: 91.0
- Lexical Diversity: 1.72
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15911269', '15258155', '15266377', '14927703', '14927746']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.969804255777836
- 35 USC 102 Novelty (BERT): 0.7069987453210059
- Combined Prediction Score: 0.943523704732153
- Mean Citation Score: 775.20099
- Max Citation Score: 791.89355
- Similarity Product: 752.063993203965

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

Dataset: test