초록 ▼

A laser receiver is provided that is capable of providing an accurate indication of laser receiver tilt and correcting a generated elevation signal based upon the indicated laser receiver tilt. In accordance with one embodiment of the present invention, a laser receiver is provided comprising a lase

A laser receiver is provided that is capable of providing an accurate indication of laser receiver tilt and correcting a generated elevation signal based upon the indicated laser receiver tilt. In accordance with one embodiment of the present invention, a laser receiver is provided comprising a laser beam detection unit, an inclination detection unit, and suitable laser receiver control circuitry. The laser beam detection unit is arranged to enable production of an elevation signal indicative of an elevation of a laser beam relative to the laser receiver. The inclination detection unit comprises a reference light source, an optical fiber, and an optical detector. The optical fiber defines a light input end and a light output end and is coupled to the reference light source such that light from the reference light source enters at the light input end and exits from the light output end as an output beam of light. The optical detector is arranged to receive the output beam of light. The inclination detection unit is arranged to permit the output end of the optical fiber to move relative to the optical detector as the primary receiver axis tilts relative to a vertical reference axis. The optical detector is arranged to produce an optical detection signal indicative of a position of the output beam on the optical detector. The laser receiver control circuitry is arranged to generate a receiver tilt signal from the optical detection signal. The receiver tilt signal is indicative of a degree to which the primary receiver axis is tilted relative to the vertical reference axis. The laser receiver control circuitry is also arranged to correct the elevation signal as a function of the receiver tilt signal.

대표청구항 ▼

[ What is claimed is:] [1.]1. A laser receiver defining a primary receiver axis and comprising:a laser beam detection unit arranged to enable production of an elevation signal indicative of an elevation of a laser beam relative to said laser receiver;an inclination detection unit comprisinga referen

[ What is claimed is:] [1.]1. A laser receiver defining a primary receiver axis and comprising:a laser beam detection unit arranged to enable production of an elevation signal indicative of an elevation of a laser beam relative to said laser receiver;an inclination detection unit comprisinga reference light source,an optical fiber defining a light input end and a light output end, wherein said optical fiber is coupled to said reference light source such that light from said reference light source enters at said light input end and exits from said light output end as an output beam of light, andan optical detector arranged to receive said output beam of light, wherein said inclination detection unit is arranged to permit said output end of said optical fiber to move relative to said optical detector as said primary receiver axis tilts relative to a vertical reference axis, and wherein said optical detector is arranged to produce an optical detection signal indicative of a position of said output beam on said optical detector; andlaser receiver control circuitry arranged togenerate a receiver tilt signal from said optical detection signal, wherein said receiver tilt signal is indicative of a degree to which said primary receiver axis is tilted relative to said vertical reference axis, andcorrect said elevation signal as a function of said receiver tilt signal.