Laser microphone

Details Laser microphone Laser microphone

1997-12-12

2000-11-14

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359151, H04B 1000, H04B 1008, H04B 1030

Patent

active

061477877

ABSTRACT:
A microphone for detecting sound pressure waves includes a laser resonator having a laser gain material aligned coaxially between a pair of first and second mirrors for producing a laser beam. A reference cell is disposed between the laser material and one of the mirrors for transmitting a reference portion of the laser beam between the mirrors. A sensing cell is disposed between the laser material and one of the mirrors, and is laterally displaced from the reference cell for transmitting a signal portion of the laser beam, with the sensing cell being open for receiving the sound waves. A photodetector is disposed in optical communication with the first mirror for receiving the laser beam, and produces an acoustic signal therefrom for the sound waves.

REFERENCES:
patent: 3470329 (1969-09-01), Young
patent: 4238856 (1980-12-01), Bucaro et al.
patent: 4412105 (1983-10-01), Muscatell
patent: 4479265 (1984-10-01), Muscatell
patent: 5262884 (1993-11-01), Buchholz
patent: 5414509 (1995-05-01), Veligdan
patent: 5910855 (1999-06-01), Thomas
Machine Design, "Optical Microphones Mix Light and Sounds," Dec. 12, 1994, p. 71.

Affiliated with

Also associated with

Rating

Laser microphone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser microphone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser microphone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2070789