GB1338167A - Optical guide beam system for locating reference points at various levels of an extensive structure - Google Patents
Optical guide beam system for locating reference points at various levels of an extensive structureInfo
- Publication number
- GB1338167A GB1338167A GB436771A GB436771A GB1338167A GB 1338167 A GB1338167 A GB 1338167A GB 436771 A GB436771 A GB 436771A GB 436771 A GB436771 A GB 436771A GB 1338167 A GB1338167 A GB 1338167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- source
- cells
- housing
- prism
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
Abstract
1338167 Photo-electric structure monitoring DEUTSCHE BAUARADEMIE ZU BERLIN 10 Feb 1971 4367/71 Heading G1A In a system for checking the respective positions of predetermined points on an extensive structure by means of reference light beams 10 and photo-cells 15 there is provided a telescopic optical unit 2 with an apertured diaphragm in its common focal plane gymbal mounted in a housing 17, and which is orientated by connection with a damped pendulum, a replaceable light source 1, a rotatable beam deflecting optical prism 5 mounted in the beam path at the upper end of the housing and coupled with a continuously or intermittently driven stepping gearing, and further fixed beam deflecting optical units 9 in the path swept by the beam from the rotatable unit, to produce, during rotation, the reference beams 10. The units 9 are accurately mounted on reference surfaces and include optical wedges at the entry and exit windows for beam adjustment. The source may be a laser, and provision of a surveying instrument 19 and a prism 18 may be made to facilitate visual sighting along the beam paths in the event of a source failure. The photocell outputs may be indicated or recorded, and the photo-cells may be replaced by sighting discs which may be viewed for beam incidence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB436771A GB1338167A (en) | 1971-02-10 | 1971-02-10 | Optical guide beam system for locating reference points at various levels of an extensive structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB436771A GB1338167A (en) | 1971-02-10 | 1971-02-10 | Optical guide beam system for locating reference points at various levels of an extensive structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1338167A true GB1338167A (en) | 1973-11-21 |
Family
ID=9775840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB436771A Expired GB1338167A (en) | 1971-02-10 | 1971-02-10 | Optical guide beam system for locating reference points at various levels of an extensive structure |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1338167A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4468119A (en) * | 1982-05-24 | 1984-08-28 | Hamar M R | Penta-prism module having laser alignment error detection and correction capability |
| GB2174491A (en) * | 1985-04-24 | 1986-11-05 | Univ Strathclyde | A displacement measuring system |
| WO1987003958A1 (en) * | 1985-12-24 | 1987-07-02 | National Research Development Corporation | Improvements in or relating to plummets |
| CN113358068A (en) * | 2021-04-26 | 2021-09-07 | 福建数博讯信息科技有限公司 | Floor type scaffold correcting method and device |
-
1971
- 1971-02-10 GB GB436771A patent/GB1338167A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4468119A (en) * | 1982-05-24 | 1984-08-28 | Hamar M R | Penta-prism module having laser alignment error detection and correction capability |
| GB2174491A (en) * | 1985-04-24 | 1986-11-05 | Univ Strathclyde | A displacement measuring system |
| WO1987003958A1 (en) * | 1985-12-24 | 1987-07-02 | National Research Development Corporation | Improvements in or relating to plummets |
| CN113358068A (en) * | 2021-04-26 | 2021-09-07 | 福建数博讯信息科技有限公司 | Floor type scaffold correcting method and device |
| CN113358068B (en) * | 2021-04-26 | 2023-06-20 | 福建数博讯信息科技有限公司 | Correction method and device for floor type scaffold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |