Patent ID: 9360317
Filing Date: 2016-06-07
CPC Classification: G01B,G01C,G01J,G08B,H03F

Claim Text:
1. A method of detecting a laser beam emitted by a laser tool, the method comprising: receiving light via an optical window of a receiver unit; directing the light received via the optical window onto a first light sensor array and a second light sensor array, the first and the second light sensor arrays being arranged adjacent to each other within the housing; outputting a first and a second signal from the first light sensor array to a first and a second transimpedance amplifier, respectively, and to a first and second light compensator, respectively, the first and the second signals being indicative of the light incident upon the first light sensor array; outputting a third and a fourth signal from the second light sensor array to a third and a fourth transimpedance amplifier, respectively, and to a third and a fourth light compensator, respectively, the third and the fourth signals being indicative of the light incident upon the second light sensor array; processing output signals from the first, second, third and fourth transimpedance amplifiers to determine where the light is incident on the first and the second light sensor array; and processing output signals from the first, second, third and fourth light compensators to determine an intensity and/or distribution of light on the first and the second light sensor arrays.