Phase measurement method and application thereof

Details Phase measurement method and application thereof Phase measurement method and application thereof

2007-02-09

2008-11-18

Tarcza, Thomas H (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S005150, C356S004010

Reexamination Certificate

active

07453554

ABSTRACT:
A phase measurement method is disclosed, which includes inputting a predetermined voltage to the photodiode; receiving an optical signal and transforming into an electrical signal; generating a sampled signal with a signal transforming process; determining whether the amplitude value of the sampled signal in a predetermined range or not; if the amplitude of the sampled signal is not in the predetermined amplitude range, adjusting the predetermined voltage and receiving the optical signal and judging again until the amplitude value falls into the predetermined amplitude range; if the amplitude of the sampled signal is in the predetermined amplitude range, calculating the first phase value; and judging whether the predetermined voltage adjusted or not. If the predetermined voltage has been adjusted, calculating the compensating phase value and the second phase value in accordance with the adjusted predetermined voltage.

REFERENCES:
patent: 4011562 (1977-03-01), Bruce
patent: 5311271 (1994-05-01), Hurt et al.
patent: 6483595 (2002-11-01), Yakovlev et al.
patent: 6603536 (2003-08-01), Hasson et al.
patent: 2001/0013697 (2001-08-01), Saito et al.
patent: 2006/0072025 (2006-04-01), Kakumoto et al.

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