公开(公告)号：DE69026227D1

公开(公告)日：1996-05-02

申请号：DE69026227

申请日：1990-12-21

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LEONBERGER FREDERICK JOHN ,  GLENN WILLIAM HENRY

IPC: G02B5/28 ,  G02B5/18 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/08 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/139 ,  H01S3/23

公开(公告)号：FR2492097A1

公开(公告)日：1982-04-16

申请号：FR8118082

申请日：1981-09-25

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GLENN WILLIAM HENRY ,  TOMLINSON RICHARD GILES

IPC: G01L1/24 ,  G01D5/26 ,  G01L9/00 ,  G01L11/02 ,  G01L11/00

Abstract: A system for sensing pressure features an electrically passive sensing head connected to electrically active components by a fiber optic cable. A preferred embodiment combines a polariscope bracketing a quarter wave plate and a photoelastic medium. The dependence of the intensities of two polarization components of light emerging from the photoelastic medium on the pressure applied to the medium permits the measurement of that pressure in a manner that has quadratic error dependence on optical misalignment.

公开(公告)号：DE3138075A1

公开(公告)日：1982-04-15

申请号：DE3138075

申请日：1981-09-24

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TOMLINSON RICHARD GILES ,  GLENN WILLIAM HENRY

IPC: G01L1/24 ,  G01L9/00 ,  G01L11/02 ,  G01L7/02

Abstract: An apparatus for pressure measurement employs fiber optics to transport a broadband beam light to and from a remote electrically passive sensing head. In the sensing head, a linearly polarized beam is phase shifted in a birefringent plate, then passed through a photoelastic pressure sensor and a polarization analyzer. The wavelength for which the output light has an intensity minimum is a measure of the applied pressure.

公开(公告)号：DE3138061A1

公开(公告)日：1982-04-15

申请号：DE3138061

申请日：1981-09-24

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GLENN WILLIAM HENRY ,  TOMLINSON RICHARD GILES

IPC: G01L1/24 ,  G01D5/26 ,  G01L9/00 ,  G01L11/02 ,  G01L7/02

Abstract: A system for sensing pressure features an electrically passive sensing head connected to electrically active components by a fiber optic cable. A preferred embodiment combines a polariscope bracketing a quarter wave plate and a photoelastic medium. The dependence of the intensities of two polarization components of light emerging from the photoelastic medium on the pressure applied to the medium permits the measurement of that pressure in a manner that has quadratic error dependence on optical misalignment.

公开(公告)号：IT8124126D0

公开(公告)日：1981-09-24

申请号：IT2412681

申请日：1981-09-24

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TOMLINSON RICHARD GILES ,  GLENN WILLIAM HENRY

IPC: G01L9/00 ,  G01L1/24 ,  G01L11/02 ,  G01L

Abstract: An apparatus for pressure measurement employs fiber optics to transport a broadband beam light to and from a remote electrically passive sensing head. In the sensing head, a linearly polarized beam is phase shifted in a birefringent plate, then passed through a photoelastic pressure sensor and a polarization analyzer. The wavelength for which the output light has an intensity minimum is a measure of the applied pressure.

公开(公告)号：DE69026227T2

公开(公告)日：1996-08-29

申请号：DE69026227

申请日：1990-12-21

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LEONBERGER FREDERICK JOHN ,  GLENN WILLIAM HENRY

IPC: G02B5/28 ,  G02B5/18 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/08 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/139 ,  H01S3/23

公开(公告)号：DE69021543T2

公开(公告)日：1996-01-18

申请号：DE69021543

申请日：1990-12-21

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MELTZ GERALD ,  GLENN WILLIAM HENRY

IPC: G02B5/18 ,  G02B6/02 ,  G02B6/34 ,  G02B6/12 ,  G02B6/16

公开(公告)号：DE69021543D1

公开(公告)日：1995-09-14

申请号：DE69021543

申请日：1990-12-21

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MELTZ GERALD ,  GLENN WILLIAM HENRY

IPC: G02B5/18 ,  G02B6/02 ,  G02B6/34 ,  G02B6/12 ,  G02B6/16

公开(公告)号：FR2491212A1

公开(公告)日：1982-04-02

申请号：FR8118196

申请日：1981-09-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TOMLINSON RICHARD GILES ,  GLENN WILLIAM HENRY

IPC: G01L9/00 ,  G01L11/02 ,  G01L1/24 ,  G01B11/18

Abstract: An apparatus for pressure measurement employs fiber optics to transport a broadband beam light to and from a remote electrically passive sensing head. In the sensing head, a linearly polarized beam is phase shifted in a birefringent plate, then passed through a photoelastic pressure sensor and a polarization analyzer. The wavelength for which the output light has an intensity minimum is a measure of the applied pressure.