GB862290A - Improvements relating to optical apparatus for indicating the location of a body relative to a straight line - Google Patents
Improvements relating to optical apparatus for indicating the location of a body relative to a straight lineInfo
- Publication number
- GB862290A GB862290A GB1740957A GB1740957A GB862290A GB 862290 A GB862290 A GB 862290A GB 1740957 A GB1740957 A GB 1740957A GB 1740957 A GB1740957 A GB 1740957A GB 862290 A GB862290 A GB 862290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line image
- grating
- rod
- light source
- location
- 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
- 230000003287 optical effect Effects 0.000 title abstract 2
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
- G01D5/32—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 attenuation or whole or partial obturation of beams of light
- G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
862,290. Optical alignment apparatus, ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 29, 1958 [May 31, 1957], No. 17409/57. Class 97(1) In order to determine the location of a body relative to a straight line, a line image of a source is formed by a diffraction grating, and this line image and a reference mark attached to the body are viewed through means attached to the body. As shown in Fig. 4, the body T to be located includes an eye-piece E and cross-hairs W which are mounted on a rod D, axially displaceable under the control of a vernier screw M. In front of the body are disposed a light source S and a diffraction grating G, whereby a line image of the source is formed along a line through the centre of the grating. The body T can be placed so that the cross-hairs W appear to lie on this line image, or the body T can be set in a known position and the rod D adjusted until the crosshairs coincide with the line image. A reflecting grating may alternatively be used, in which case the light source is carried by the rod D. As a light source a second diffraction grating may be employed, the spacing of which is the same as that of the grating G, and arranged so that the central point is opaque. The apparatus may be used for aligning bearing housings, as of a turbine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1740957A GB862290A (en) | 1957-05-31 | 1957-05-31 | Improvements relating to optical apparatus for indicating the location of a body relative to a straight line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1740957A GB862290A (en) | 1957-05-31 | 1957-05-31 | Improvements relating to optical apparatus for indicating the location of a body relative to a straight line |
Publications (1)
Publication Number | Publication Date |
---|---|
GB862290A true GB862290A (en) | 1961-03-08 |
Family
ID=10094689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1740957A Expired GB862290A (en) | 1957-05-31 | 1957-05-31 | Improvements relating to optical apparatus for indicating the location of a body relative to a straight line |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB862290A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3269254A (en) * | 1962-12-31 | 1966-08-30 | Ibm | Optical apparatus for indicating and measuring the roll angular orientation of a movable body |
US3536378A (en) * | 1965-04-01 | 1970-10-27 | Troy R Bishop | System for producing optical illusion of three-dimensional light beam |
US6266187B1 (en) | 1996-08-17 | 2001-07-24 | Fryco Limited | Substrate producing three-dimensional images |
-
1957
- 1957-05-31 GB GB1740957A patent/GB862290A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3269254A (en) * | 1962-12-31 | 1966-08-30 | Ibm | Optical apparatus for indicating and measuring the roll angular orientation of a movable body |
US3536378A (en) * | 1965-04-01 | 1970-10-27 | Troy R Bishop | System for producing optical illusion of three-dimensional light beam |
US6266187B1 (en) | 1996-08-17 | 2001-07-24 | Fryco Limited | Substrate producing three-dimensional images |
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