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AssigneeErnst Albert REMBERG BUENO
InventorsErnst Albert REMBERG BUENO, Herman DÍAZ ARIAS
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The device of the present invention is an electro-optical distance meter that operates by reflecting a beam of light off of a target or object for which the distance from the meter is desired to be known. Unlike conventional optical time-of-flight meters, the beam of light in this case is a continuous sine signal that forms a functional part, including the path thereof, of a positive feedback line that feeds a high-gain amplifier that thus becomes an oscillator having a frequency proportional to the distance at which the object is located, the frequency-distance ratio being logarithmic. The circuit is essentially characterized in that, despite using light to evaluate distance, it does not require ultra-high-speed circuits but only conventional industrial-level, or even commercial-level, circuits, providing a low-cost solution to the need to estimate distances from a short range in a compact form.
An integral electrooptic distance meter comprising a high gain amplifier circuit, a light emitter, a light sensor, a linearizer circuit and a positive feedback device, characterized in that the high gain amplifier circuit is formed by two operational amplifiers configured as inverting amplifiers connected in a closed circuit comprising the light emitting device and the light sensing device forming a single positively feedback operating circuit, which is further characterized in that the positive feedback controlling the stability and hence the oscillation of the circuit is the forward path and turn on the light beam produced by the light emitter and which is returned to the object whose distance to the measuring device is to be measured.
Dependencies are inferred from the claim text.