JPS5459169A - Size measuring apparatus - Google Patents
Size measuring apparatusInfo
- Publication number
- JPS5459169A JPS5459169A JP12527777A JP12527777A JPS5459169A JP S5459169 A JPS5459169 A JP S5459169A JP 12527777 A JP12527777 A JP 12527777A JP 12527777 A JP12527777 A JP 12527777A JP S5459169 A JPS5459169 A JP S5459169A
- Authority
- JP
- Japan
- Prior art keywords
- detectors
- light image
- photoelectric transducers
- signals
- comparators
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To improve the measurement accuracy and resolution of the apparatus using a plurality of photoelectric transducers by controlling the synchronous scanning and gain of plural photo detectors.
CONSTITUTION: The respective photoelectric transducers of photo detectors 22a... are shifted according to the clock from a second signal generator 25, whereby the light image of the measuring object 20 is scanned. This causes the detection light image signals to be applied to comparators 30a... and AGC circuit 27a..., then the synchronous scanning of the second and subsequent detectors 22a... is controlled via one-shot circuit 29a... by time width pulses corresponding to the differential signals with the reference set level outputted by circuits 27a... Hence, the stable detection signals having undergone required AGC through controlling of running image storing time are generated from the respective photoelectric transducers of the detectors 22a... and the output pulses of the comparators 30a... by the light image signals above the threshold value are applied to an arithmetic circuit 34 through the NAND gates 31a... which are opened after the second and subsequent scannings, whereby the measurement of high resolution and high accuracy is accomplished
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12527777A JPS592842B2 (en) | 1977-10-19 | 1977-10-19 | Dimension measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12527777A JPS592842B2 (en) | 1977-10-19 | 1977-10-19 | Dimension measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5459169A true JPS5459169A (en) | 1979-05-12 |
| JPS592842B2 JPS592842B2 (en) | 1984-01-20 |
Family
ID=14906081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12527777A Expired JPS592842B2 (en) | 1977-10-19 | 1977-10-19 | Dimension measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS592842B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654308A (en) * | 1979-10-09 | 1981-05-14 | Toshiba Corp | Detector for plate-width defect |
| JPS57134609U (en) * | 1981-02-14 | 1982-08-21 | ||
| JPS57135573A (en) * | 1981-02-16 | 1982-08-21 | Canon Inc | Picture reader |
| JPS61286707A (en) * | 1985-06-12 | 1986-12-17 | Hokuyo Automatic Co | Apparatus for optical length measurement of outer shape |
| JPH0242343A (en) * | 1988-08-02 | 1990-02-13 | Nec Corp | Device for inspecting through-hole |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61198436U (en) * | 1985-05-31 | 1986-12-11 |
-
1977
- 1977-10-19 JP JP12527777A patent/JPS592842B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654308A (en) * | 1979-10-09 | 1981-05-14 | Toshiba Corp | Detector for plate-width defect |
| JPS57134609U (en) * | 1981-02-14 | 1982-08-21 | ||
| JPS57135573A (en) * | 1981-02-16 | 1982-08-21 | Canon Inc | Picture reader |
| JPS61286707A (en) * | 1985-06-12 | 1986-12-17 | Hokuyo Automatic Co | Apparatus for optical length measurement of outer shape |
| JPH0242343A (en) * | 1988-08-02 | 1990-02-13 | Nec Corp | Device for inspecting through-hole |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS592842B2 (en) | 1984-01-20 |
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