GB570022A - A projection system for the inspection of internal surfaces - Google Patents
A projection system for the inspection of internal surfacesInfo
- Publication number
- GB570022A GB570022A GB1577143A GB1577143A GB570022A GB 570022 A GB570022 A GB 570022A GB 1577143 A GB1577143 A GB 1577143A GB 1577143 A GB1577143 A GB 1577143A GB 570022 A GB570022 A GB 570022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- objective lens
- mirror
- light
- inspection
- internal surfaces
- 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
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
570,022. Optical inspection apparatus. FRENCH, J. L., PACKMAN, J. R., and PLESSEY CO., Ltd. Sept. 25, 1943, No. 15771. [Class 97 (i)] [Also in Group XIX] A device for the inspection of internal surfaces comprises a source of light, one or more condensing lenses and an objective lens arranged so that the objective lens is used to direct a beam of light on to the surface under investigation and the ravs after reflection from the surface are directed through the objective lens on to a screen. As shown, light from a source 1 is directed on to a groove in an internal surface by a condensing lens 2, an objective lens 3, a mirror 6 and through a hole 5 in a frame 4, and, after reflection at the internal surface, the rays pass back by way of the mirror 6, objective lens 3 and a mirror 7 to be projected on to a screen 8. The frame 4 which may carry the complete optical system may also have an adjustable blank end carrying a fiducial mark co-operating with a scale for direct measurement, Fig. 2 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1577143A GB570022A (en) | 1943-09-25 | 1943-09-25 | A projection system for the inspection of internal surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1577143A GB570022A (en) | 1943-09-25 | 1943-09-25 | A projection system for the inspection of internal surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB570022A true GB570022A (en) | 1945-06-19 |
Family
ID=10065191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1577143A Expired GB570022A (en) | 1943-09-25 | 1943-09-25 | A projection system for the inspection of internal surfaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB570022A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2984147A (en) * | 1957-03-15 | 1961-05-16 | Thompson Ramo Wooldridge Inc | Means for optical gaging |
| US3495915A (en) * | 1966-06-27 | 1970-02-17 | Gen Electric | Photoelectric probe detecting and measuring apparatus |
| US4373811A (en) * | 1980-09-26 | 1983-02-15 | Jones Ira D | Scope for viewing the internal surface of a bore or similar cavity |
-
1943
- 1943-09-25 GB GB1577143A patent/GB570022A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2984147A (en) * | 1957-03-15 | 1961-05-16 | Thompson Ramo Wooldridge Inc | Means for optical gaging |
| US3495915A (en) * | 1966-06-27 | 1970-02-17 | Gen Electric | Photoelectric probe detecting and measuring apparatus |
| US4373811A (en) * | 1980-09-26 | 1983-02-15 | Jones Ira D | Scope for viewing the internal surface of a bore or similar cavity |
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