PATENT CLAIM ANALYSIS

Application Number: 16319260
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-07
Patent Classification: ["359", "449000"]

Abstract:
Provided are a light-reflecting microstructure, a projection screen and a projection system. The light-reflecting microstructure includes a transparent structure ( 101 ), the transparent structure ( 101 ) including a light incident surface ( 101 a ), a light-reflecting surface ( 101 b ) and a light-absorption surface ( 101 c ) connecting the light incident surface ( 101 a ) and the light-reflecting surface ( 101 b ); a light-absorption structure ( 102 ) located on the light-absorption surface ( 101 c ); and a reflection layer ( 103 ) located on the light-reflecting surface ( 101 b ). The transparent structure ( 101 ) is configured to refract projected light incident on the light incident surface ( 101 a ) at a preset angle to the reflection layer ( 103 ), and refract stray light incident on the light incident surface ( 101 a ) at another angle to the light-absorption structure ( 102 ). The reflection layer ( 103 ) is configured to reflect the projected light in such a manner that the projected light is emitted at a certain angle from the light incident surface ( 101 a ) after being refracted twice through the transparent structure ( 101 ). The light-absorption structure ( 102 ) is configured to absorb stray light. In this way, not only the projected light projected onto the projection screen can be reflected only to the viewer field by the reflection layer ( 103 ), thereby improving brightness of the projection screen and efficiency of the projection system, but only the problem that the existing light-reflecting microstructure cannot control the stray light can be solved by absorbing the stray light using the light-absorption structure, thereby improving the contrast of the projection screen.

Claim (Index 19):
The projection system according to  claim 18 , wherein:\n when f\u22642h and tan \u03b1\u2264d/2h\u2212d/2f, tan \ue89e \ue89e \u03b3 = ( 2 \ue89e h \ue89e \ue89e tan \ue89e \ue89e \u03b1 + hd f - d 2 ) \ue89e ( 2 \ue89e f - 2 \ue89e h ) - f 2 \ue89e tan \ue89e \ue89e \u03b1 ( 2 \ue89e h - f ) \ue89e f ; when f\u22642h and tan \u03b1\u2265d/2h\u2212d/2f, tan \ue89e \ue89e \u03b3 = ( f - h ) \ue89e d - f 2 \ue89e \ue89e tan \ue89e \ue89e \u03b1 ( 2 \ue89e h - f ) \ue89e f ; when f\u22642h, tan \ue89e \ue89e \u03b2 = ( hd f - 2 \ue89e h \ue89e \ue89e tan \ue89e \ue89e \u03b1 - d 2 ) \ue89e ( 2 \ue89e h - 2 \ue89e f ) + f 2 \ue89e \ue89e tan \ue89e \ue89e \u03b1 ( 2 \ue89e h - f ) \ue89e f ; when f>2h, tan \ue89e \ue89e \u03b3 = f \ue89e \ue89e tan \ue89e \ue89e \u03b1 f - 2 \ue89e h - 3 \ue89e fhd + 4 \ue89e f 2 \ue89e \ue89e tan \ue89e \ue89e \u03b1 - df 2 - 2 \ue89e h 2 \ue89e d - 4 \ue89e fh 2 \ue89e \ue89e tan \ue89e \ue89e \u03b1 f 3 \ue8a0 ( f - 2 \ue89e h ) ; and\n when f>2h, \n tan \ue89e \ue89e \u03b2 = ( f - h ) \ue89e ( f \ue89e \ue89e tan \ue89e \ue89e \u03b1 - 4 \ue89e hf - df + 2 \ue89e hd - 4 \ue89e hf \ue89e \ue89e tan \ue89e \ue89e \u03b1 ) f 2 \ue8a0 ( f - 2 \ue89e h ) , wherein \u03b1 is an incident angle of the projected light entering into the transparent structure, \u03b2 is a first maximum emergent angle of the projected light emitted from the transparent structure, \u03b3 is a second maximum emergent angle of the projected light emitted from the transparent structure, the first maximum emergent angle and the second maximum emergent angle are maximum emergent angles respectively located at two sides of a normal of the light-reflecting microstructure, d is the side length of the top surface of the first portion, h is the distance between the top surface of the first portion and the bottom surface of the first portion, and f is the focal length of the top surface of the second portion.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 99.0
- Lexical Diversity: 3.71084
- Patent Class: 359.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13196053', '13964810', '10496656', '13157001', '15536891']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8238148920576391
- 35 USC 102 Novelty (BERT): 0.5050960026796109
- Combined Prediction Score: 0.7919430031198362
- Mean Citation Score: 220.520352
- Max Citation Score: 224.70897
- Similarity Product: 115.3609952525854

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