Patent ID: 8482721
Filing Date: 2013-07-09
Classification: G01C,G01S

Abstract:
1. A laser light receiver, comprising: a processing circuit, a plurality of photosensors, including a first photosensor of said plurality of photosensors, a variable sensitivity control circuit, an output circuit, and at least one optical filter; wherein: (a) said at least one optical filter exhibits an optical characteristic so as to allow only wavelengths of electromagnetic energy at predetermined transmittance characteristics to pass therethrough to impact upon said first photosensor, such that said predetermined transmittance characteristics sufficiently pass wavelengths in both the green and red visible light ranges; (b) said first photosensor exhibits a predetermined frequency sensitivity characteristic so as to be sufficiently sensitive to electromagnetic energy in both the green and red visible light ranges; and said first photosensor, after receiving a sufficient amount of electromagnetic energy that impacts thereon, outputs at least one first signal to said variable sensitivity control circuit, which modifies said at least one first signal according to a gain state of said variable sensitivity control circuit to produce at least one second signal, and outputs said at least one second signal to said processing circuit; and (c) said laser light receiver is configured: