GB2209603B - Precision angle and wavelength measurement apparatus using an acousto-optic cell - Google Patents
Precision angle and wavelength measurement apparatus using an acousto-optic cellInfo
- Publication number
- GB2209603B GB2209603B GB8821701A GB8821701A GB2209603B GB 2209603 B GB2209603 B GB 2209603B GB 8821701 A GB8821701 A GB 8821701A GB 8821701 A GB8821701 A GB 8821701A GB 2209603 B GB2209603 B GB 2209603B
- Authority
- GB
- United Kingdom
- Prior art keywords
- acousto
- measurement apparatus
- wavelength measurement
- optic cell
- precision angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
- G01D5/30—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878721029A GB8721029D0 (en) | 1987-09-08 | 1987-09-08 | Precision angle measurement |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8821701D0 GB8821701D0 (en) | 1988-10-19 |
GB2209603A GB2209603A (en) | 1989-05-17 |
GB2209603B true GB2209603B (en) | 1992-05-06 |
Family
ID=10623403
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB878721029A Pending GB8721029D0 (en) | 1987-09-08 | 1987-09-08 | Precision angle measurement |
GB8821701A Expired - Lifetime GB2209603B (en) | 1987-09-08 | 1988-09-05 | Precision angle and wavelength measurement apparatus using an acousto-optic cell |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB878721029A Pending GB8721029D0 (en) | 1987-09-08 | 1987-09-08 | Precision angle measurement |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB8721029D0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5583643A (en) * | 1991-04-12 | 1996-12-10 | British Technology Group Ltd. | Methods of and apparatus for measurement using acousto-optic devices |
GB9107796D0 (en) * | 1991-04-12 | 1991-05-29 | Nat Res Dev | Methods of and apparatus for measurement using acousto-optic devices |
-
1987
- 1987-09-08 GB GB878721029A patent/GB8721029D0/en active Pending
-
1988
- 1988-09-05 GB GB8821701A patent/GB2209603B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB8721029D0 (en) | 1987-10-14 |
GB2209603A (en) | 1989-05-17 |
GB8821701D0 (en) | 1988-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030905 |