Patent ID: 7075626

Claim:
A laser range finder that has a transmitter unit ( 10 ) with at least one laser, a receiver unit ( 12 ), and a single side-band modulation unit ( 14 ) that can use a first single sideband modulation frequency (ZF 1 ) generated by an oscillator unit ( 16 ) and a carrier frequency (T 1 ) to generate a modulation frequency (S 1 ) of the transmitter unit ( 10 ) as it shifts the carrier frequency (T 1 ) with the single sideband modulation frequency (ZF 1 ), characterized in that the oscillator unit ( 16 ) can generate at least one additional single sideband modulation frequency (ZF 2 ) and the single sideband modulation frequency (ZF 2 ) and the single sideband modulation unit ( 14 ) can use the additional single sideband modulation frequency (ZF 2 ) and a carrier frequency (T 2 ) to generate a demodulation frequency (S 2 ) of the receiver unit ( 12 ) as it shifts the carrier frequency (T 2 ) with the single sideband modulation frequency (ZF 2 ).