PATENT CLAIM ANALYSIS

Application Number: 16090032
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-04
Patent Classification: ["355", "077000"]

Abstract:
A light intensity modulation method implemented by using a mask ( 101 ) includes the steps of: 1) based on a circle of confusion (CoC) function of an illumination system ( 102 ), an initial light intensity distribution of an illumination field of view (FOV) and a target light intensity distribution of the illumination FOV, calculating a transmittance distribution of the mask ( 101 ) used to modulate the initial light intensity distribution into the target light intensity distribution; 2) meshing the mask ( 101 ) according to a desired accuracy of the target light intensity distribution and determining a distribution of opaque dots in each of cells resulting from the meshing based on the transmittance distribution of the mask ( 101 ) and a desired accuracy of the transmittance distribution; and 3) fabricating the mask ( 101 ) based on the determined distribution of the opaque dots and then deploying the mask ( 101 ) in the illumination system. Advantages including a high modulation accuracy, an applicability to wide FOV size, light intensity and wavelength ranges and compatibility with established manufacturing processes can be attained.

Claim (Index 2):
The light intensity modulation method according to  claim 1 , wherein in step 1), the transmittance distribution of the mask is derived by a deconvolution according to the following formula:\n ( K*N )\u00d7Fun= M,  where, K denotes the initial light intensity distribution; M denotes the target light intensity distribution; N denotes the transmittance distribution of the mask; Fun denotes the CoC function; * denotes a multiplication operation; and \u00d7 denotes a convolution operation, and wherein, the CoC function is: Fun \ue8a0 ( x , y ) = e ( - x 2 + y 2 2 \ue89e \u03c3 2 ) 2 \ue89e \u03c0 \u00b7 \u03c3 , \n \ue89e 3 \ue89e \u03c3 = R = L * tan \ue8a0 ( \u03b8 ) , where, R denotes a radius of an optical spot formed in the illumination FOV by a corresponding one of the opaque dots on the mask; x and y denote coordinates of a certain point in the illumination FOV; L denotes a distance between the mask and the illumination FOV; and \u03b8 denotes an angle of divergence of the illumination system.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 2.55696
- Patent Class: 355.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11136404', '10624555', '10603821', '13509642', '13366829']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6673936711836785
- 35 USC 102 Novelty (BERT): 0.486531592493382
- Combined Prediction Score: 0.649307463314649
- Mean Citation Score: 177.89332199999996
- Max Citation Score: 184.06204
- Similarity Product: 119.3427784085727

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