Patent ID: 7869006
Filing Date: 2011-01-11
Classification: G01B,G01S

Abstract:
1. A laser measuring device, comprising: a first light emitter for emitting first wavelength light having a first wavelength; a second light emitter for emitting second wavelength light having a second wavelength, the second light emitter being arranged perpendicular to the first light emitter; an optical mirror for allowing one of the first wavelength light and the second wavelength light to pass but reflecting the other one, so that the first wavelength light passes when noise caused by solar radiation exceeds a predetermined level, and the second wavelength light passes when the noise caused by solar radiation is below the predetermined level; a first band pass filter for allowing the first wavelength light to pass; a second band pass filter for allowing the second wavelength light to pass; a light receiver for receiving incident light, which arrives through one of the first and second band pass filters; and a controller for controlling at least one of the first and second light emitters to be activated.