JPS55136902A - Device for measuring pattern on surface of article - Google Patents
Device for measuring pattern on surface of articleInfo
- Publication number
- JPS55136902A JPS55136902A JP4498679A JP4498679A JPS55136902A JP S55136902 A JPS55136902 A JP S55136902A JP 4498679 A JP4498679 A JP 4498679A JP 4498679 A JP4498679 A JP 4498679A JP S55136902 A JPS55136902 A JP S55136902A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- output
- plated
- shaper
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 239000004332 silver Substances 0.000 abstract 2
- 238000004513 sizing Methods 0.000 abstract 2
- 238000002310 reflectometry Methods 0.000 abstract 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To measure the plated state of an article on which surface is not partially plated on the basis of a sizing clock having predetermined frequency from a PLL circuit and of a signal from an image sensor.
CONSTITUTION: Light rays are irradiated from a light source 19 to a flat article 16 on which silver is plated on the portion 18 on the surface of a copper plate 17. When the reflected light rays are applied to an image sensor 1, a signal having a waveform shown in Fig. a is produced from the sensor 1, because the reflectivities of the copper plate 17 and the silver plated portion 18 are different. When the signal a is fed through an amplifier 9 and an envelope circuit 10, the circuit 10 produces a signal having a waveform shown in Fig. b. When the output of the circuit 10 is applied to a waveform shaper 11, the shaper 11 prlduces a signal c having a pulse duration t corresponding to the width of the portion 18. When the signal output from the sensor 1 is applied, on the other hand, to a PLL circuit 2, the circuit 2 generates a sizing clock having predetermined frequency shown in Fig. d from a variable frequency oscillator 6. The output from the shaper 11 and the output from the oscillator 6 are applied then to an AND gate 14 as shown in Figs. c and d. Thus, the AND gate 14 produces a signal e having pulse number corresponding to the width of the portion 18. The pulse number is counted by a counter 15 to measure the width of the portion 18.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4498679A JPS55136902A (en) | 1979-04-12 | 1979-04-12 | Device for measuring pattern on surface of article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4498679A JPS55136902A (en) | 1979-04-12 | 1979-04-12 | Device for measuring pattern on surface of article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55136902A true JPS55136902A (en) | 1980-10-25 |
Family
ID=12706773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4498679A Pending JPS55136902A (en) | 1979-04-12 | 1979-04-12 | Device for measuring pattern on surface of article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55136902A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61161403A (en) * | 1985-01-10 | 1986-07-22 | Fujitsu Ltd | Surface treatment of conductive pattern of printed circuit board |
| US6913124B2 (en) | 2001-08-23 | 2005-07-05 | Yamaha Hatsudoki Kabushiki Kaisha | Vibration inhibiting structure for rotor |
-
1979
- 1979-04-12 JP JP4498679A patent/JPS55136902A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61161403A (en) * | 1985-01-10 | 1986-07-22 | Fujitsu Ltd | Surface treatment of conductive pattern of printed circuit board |
| US6913124B2 (en) | 2001-08-23 | 2005-07-05 | Yamaha Hatsudoki Kabushiki Kaisha | Vibration inhibiting structure for rotor |
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