JPH03111478U - - Google Patents
Info
- Publication number
- JPH03111478U JPH03111478U JP1990020635U JP2063590U JPH03111478U JP H03111478 U JPH03111478 U JP H03111478U JP 1990020635 U JP1990020635 U JP 1990020635U JP 2063590 U JP2063590 U JP 2063590U JP H03111478 U JPH03111478 U JP H03111478U
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- illumination lamp
- light
- photodetector
- optical system
- 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
- 239000011521 glass Substances 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例の構成概略図、第２
図はブロツク線図である。
１ａ，１ｂ……光検出器、３……筒状カバー、
４……照明ランプ、５……シールドガラス、６…
…プリアンプ、７……基準電圧発生器、８……差
動増幅器、９……割算回路、１０……シユミツト
回路、１１……検出器汚れ・ランプ光減衰アラー
ム、１２……シールドガラス汚れアラーム。
Figure 1 is a schematic diagram of the configuration of an embodiment of the present invention;
The figure is a block diagram. 1a, 1b...photodetector, 3...cylindrical cover,
4...Illumination lamp, 5...Shield glass, 6...
... Preamplifier, 7 ... Reference voltage generator, 8 ... Differential amplifier, 9 ... Division circuit, 10 ... Schmitt circuit, 11 ... Detector dirt/lamp light attenuation alarm, 12 ... Shield glass dirt alarm .
Claims (1)
る光学系と、被加工物と光学系との間に設置する
シールドガラスと、被加工物を照す照明ランプと
を備えたレーザ加工装置において、前記照明ラン
プからの直接光を受光する光検出器と、前記照明
ランプ出射後、前記シールドガラスを反射又は透
過してくる反射光または透過光を検出する光検出
器とを有し、これら２つの検出器出力信号の比の
変化率を算出し、この値が定められた値以下又は
以上になると警報を発する電子回路とを備えたこ
とを特徴とするレーザ加工装置。 In a laser processing device equipped with a laser oscillator, an optical system that focuses laser light on a workpiece, a shield glass installed between the workpiece and the optical system, and an illumination lamp that illuminates the workpiece. , a photodetector that receives direct light from the illumination lamp, and a photodetector that detects reflected light or transmitted light that is reflected or transmitted through the shield glass after being emitted from the illumination lamp, and these two 1. A laser processing device comprising: an electronic circuit that calculates a rate of change in the ratio of two detector output signals and issues an alarm when this value becomes less than or more than a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990020635U JPH03111478U (en) | 1990-02-28 | 1990-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990020635U JPH03111478U (en) | 1990-02-28 | 1990-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03111478U true JPH03111478U (en) | 1991-11-14 |
Family
ID=31523722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990020635U Pending JPH03111478U (en) | 1990-02-28 | 1990-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03111478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017196629A (en) * | 2016-04-26 | 2017-11-02 | 株式会社Ｎｉｓｈｉｈａｒａ | Protective glass contamination detection apparatus, laser processing machine equipped with the same, and protective glass contamination detection method |
-
1990
- 1990-02-28 JP JP1990020635U patent/JPH03111478U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017196629A (en) * | 2016-04-26 | 2017-11-02 | 株式会社Ｎｉｓｈｉｈａｒａ | Protective glass contamination detection apparatus, laser processing machine equipped with the same, and protective glass contamination detection method |
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