JPS5633506A - Device for measuring outside diameter - Google Patents
Device for measuring outside diameterInfo
- Publication number
- JPS5633506A JPS5633506A JP10868479A JP10868479A JPS5633506A JP S5633506 A JPS5633506 A JP S5633506A JP 10868479 A JP10868479 A JP 10868479A JP 10868479 A JP10868479 A JP 10868479A JP S5633506 A JPS5633506 A JP S5633506A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- image
- outside diameter
- light
- scanning element
- 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.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To simplify a measuring device and enhance its reliability, by using a lens to form an image of rays of light from a diffusion plate illuminated by a light source and by using a solid scanning element to read an equal magnification imge formed by a lens for a measured object located on an image formation surface for the former image and by effecting prescribed calculation and processing to determine the outside diameter of the object.
CONSTITUTION: Light is irradiated from a light source 21 upon a diffusion plate 25 through a reflector 22, a lens 23 and a filter 24. Diffused light from the plate 25 is formed into an image in a position (s) by a lens 26. The equal magnification image of a measured object 11 located in the position (s) is formed on a solid scanning element 28 such as CCD by a lens 27. The solid scanning element 28 is scanned by a driver 29. The output signal of the element is processed by a signal processor to determine the outside diameter of the object 11. The nonuniformity of the brilliance of the image formation surface (s) is compensated through a filter or a calculation circuit. In that case, an optical output is changed into a binary code by an intermediate level (Vmax- Vmin)/2, and number N of O-level bits is counted and the pitch length l of a photoelement is multiplied by N to determine the outside diameter. Thereby, said procedure results in simplifying a measuring device and enhancing its reliability.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10868479A JPS5633506A (en) | 1979-08-28 | 1979-08-28 | Device for measuring outside diameter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10868479A JPS5633506A (en) | 1979-08-28 | 1979-08-28 | Device for measuring outside diameter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5633506A true JPS5633506A (en) | 1981-04-04 |
Family
ID=14491033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10868479A Pending JPS5633506A (en) | 1979-08-28 | 1979-08-28 | Device for measuring outside diameter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5633506A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195707U (en) * | 1986-06-02 | 1987-12-12 |
-
1979
- 1979-08-28 JP JP10868479A patent/JPS5633506A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195707U (en) * | 1986-06-02 | 1987-12-12 |
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