PATENT CLAIM ANALYSIS

Application Number: 16047852
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["353", "098000"]

Abstract:
Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

Claim (Index 1):
A laser projector comprising:\n at least one laser diode; a power source; a photodetector responsive to laser light output by the at least one laser diode; a current sensor responsive to electric current output by the power source; a beam splitter positioned and oriented to direct a first portion of laser light from the at least one laser diode along a first optical path towards the photodetector and a second portion of laser light from the at least one laser diode along a second optical path towards an output of the laser projector; a first laser safety circuit communicatively coupled to the photodetector and responsive to signals therefrom, the first laser safety circuit comprising a first switch that mediates an electrical coupling between the power source and the at least one laser diode, wherein in response to a signal from the photodetector indicative that a power of the laser light output by the at least one laser diode exceeds a first threshold, the first switch interrupts a supply of power to the at least one laser diode from the power source; and a second laser safety circuit communicatively coupled to the current sensor and responsive to signals therefrom, the second laser safety circuit comprising a second switch that mediates electrical coupling between the power source and the at least one laser diode, wherein in response to a signal from the current sensor indicative that an electric current output by the power source exceeds a second threshold, the switch interrupts a supply of power to the at least one laser diode from the power source.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 95.0
- Lexical Diversity: 2.39394
- Patent Class: 353.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16047859', '16047857', '15839102', '15661415', '15839058']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7246229717287727
- 35 USC 102 Novelty (BERT): 0.554746344809748
- Combined Prediction Score: 0.7076353090368702
- Mean Citation Score: 392.9223960000001
- Max Citation Score: 411.09592
- Similarity Product: 384.7875900461769

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

Dataset: test