PATENT CLAIM ANALYSIS

Application Number: 16154670
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["382", "154000"]

Abstract:
A method and a device for measuring the topography and/or the gradients and/or the curvature of an optically active surface of an object are disclosed. The device allows the object to be arranged in a receiving region with a contact surface for contact with the object. Inside the device, there is a plurality of point light sources that provide light that is reflected at the surface to be measured of an object arranged in the receiving region. The device includes at least one camera with an objective assembly and an image sensor for detecting a brightness distribution which is produced on a light sensor by the light of the point light sources reflected at the surface to be measured.

Claim (Index 3):
An apparatus for measuring at least one of a topography, a gradient, or a curvature of an optically effective surface of an article, the apparatus comprising:\n a holding device configured to arrange the article on an abutment resting against the article in a recording region; a plurality of point light sources configured to illuminate the optically effective surface of the article and a recording device configured to capture a brightness distribution composed of luminous spots, the brightness distribution being caused by light of the point light sources, reflected at the surface of the article to be measured, to illuminate the optically effective surface of the article; a device configured to establish at least one of an absolute position or a relative position of the luminous spots; a device configured to establish the at least one of the absolute position or the relative position of at least one point on the optically effective surface of the article in a coordinate system that is fixed relative to the apparatus, the apparatus being configured to iteratively: assign the brightness distribution to the point light sources causing the brightness distribution and predetermine a first topography; determine reflection locations on the article for the light emitted by the point light sources; calculate surface normals {right arrow over (n)} at the reflection locations for the light emitted by the point light sources; and calculate a further topography of the article by fitting local basis functions of the optically effective surface being modeled as a linear combination of the local basis functions; up to a convergence criterion.

Metadata:
- Claim Count in Document: 46.0
- Percentile: 97.0
- Lexical Diversity: 2.10169
- Patent Class: 382.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14930489', '11769054', '12347909', '11288156', '12083004']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3352350727371782
- 35 USC 102 Novelty (BERT): 0.4807766339607226
- Combined Prediction Score: 0.3497892288595327
- Mean Citation Score: 176.54616
- Max Citation Score: 229.89694
- Similarity Product: 189.1195552179813

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 0

Dataset: test