JPH0352607U - - Google Patents
Info
- Publication number
- JPH0352607U JPH0352607U JP11432689U JP11432689U JPH0352607U JP H0352607 U JPH0352607 U JP H0352607U JP 11432689 U JP11432689 U JP 11432689U JP 11432689 U JP11432689 U JP 11432689U JP H0352607 U JPH0352607 U JP H0352607U
- Authority
- JP
- Japan
- Prior art keywords
- edge
- time
- last
- detects
- measuring device
- 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
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000003708 edge detection Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 8
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
第１図は、本考案に係る光学式走査型測定装置
の実施例で用いられているゲート回路及びカウン
タの要部を示すブロツク線図、第２図は、実施例
の全体構成を示す、一部ブロツク線図を含む光路
図、第３図は、前記実施例の各部信号波形を示す
線図、第４図は、光学式走査型測定装置において
透明体を測定している状況及びそのときの走査波
形の例を示す線図、第５図は、光学式走査型測定
装置における透明体の測定原理を説明するための
線図、第６図は、透明体測定に用いられている従
来のゲート回路及びカウンタの構成の例を示すブ
ロツク線図、第７図は、第６図に示した従来例の
各部信号波形の例を示す線図である。
１０……レーザ光源、１２……レーザビーム、
１４……ポリゴンミラー、１６……回転走査ビー
ム、１８……コリメータレンズ、２０……平行走
査ビーム、２２……透明体（測定対象物）、２６
，３２……受光素子、５０……エツジ検出回路、
５２……リセツト回路、５６……ゲート回路、５
６Ａ……シフトレジスタ、５６Ｂ……フリツプフ
ロツプ（ＦＦ）、５８，５８Ａ，５８Ｂ，５８Ｐ
，５８Ｑ……カウンタ。
FIG. 1 is a block diagram showing the main parts of the gate circuit and counter used in an embodiment of the optical scanning measuring device according to the present invention, and FIG. 2 is a block diagram showing the overall configuration of the embodiment. FIG. 3 is a diagram showing the signal waveforms of each part of the above-mentioned embodiment. FIG. A line diagram showing an example of a scanning waveform, Fig. 5 is a line diagram for explaining the principle of measuring a transparent object in an optical scanning measuring device, and Fig. 6 is a diagram showing a conventional gate used in measuring a transparent object. FIG. 7 is a block diagram showing an example of the configuration of a circuit and a counter. FIG. 7 is a diagram showing an example of signal waveforms at various parts of the conventional example shown in FIG. 10... Laser light source, 12... Laser beam,
14... Polygon mirror, 16... Rotating scanning beam, 18... Collimator lens, 20... Parallel scanning beam, 22... Transparent body (measurement object), 26
, 32... light receiving element, 50... edge detection circuit,
52...Reset circuit, 56...Gate circuit, 5
6A...Shift register, 56B...Flip-flop (FF), 58, 58A, 58B, 58P
, 58Q...Counter.
Claims (1)
とするコリメータレンズと、測定対象を通過した
前記平行走査ビームの明暗を検出する計測用の受
光素子と、該受光素子出力を波形整形してエツジ
を検出するエツジ検出回路とを有し、測定対象に
よつて前記平行走査ビームの一部が遮られて生じ
る暗部又は明部への切替りを検出して、測定対象
の走査方向寸法を求めるようにした光学式走査型
測定装置において、 受光信号の立上がりエツジを検出する毎、又は
立下がりエツジを検出する毎に出力が反転するフ
リツプフロツプと、 該フリツプフロツプの出力が反転する毎に、交
互に計数を開始し、又は計数値がクリアされる１
対のカウンタとを備え、 該１対のカウンタの計数値により、受光信号の
最後の立上がりエツジ又は最後の立下がりエツジ
の時刻を求めることを特徴とする光学式走査型測
定装置。 (2) 請求項１において、前記最後の立上がりエ
ツジ又は最後の立下がりエツジの時刻を、前記１
対のカウンタの計数値の和から求めることを特徴
とする光学式走査型測定装置。[Claims for Utility Model Registration] (1) A collimator lens that converts a rotating or oscillating scanning beam into a parallel scanning beam, a measurement light-receiving element that detects the brightness of the parallel scanning beam that has passed through a measurement object, and the light-receiving element. It has an edge detection circuit that waveforms the output and detects edges, and detects a switch to a dark area or a bright area that occurs when a part of the parallel scanning beam is blocked by the object to be measured, and detects the edge of the object to be measured. An optical scanning measuring device configured to determine the dimension in the scanning direction of a light receiving signal includes a flip-flop whose output is inverted each time a rising edge or a falling edge of a received light signal is detected; Counting is started alternately every time, or the counted value is cleared 1
1. An optical scanning measuring device comprising: a pair of counters; the time of the last rising edge or the last falling edge of a received light signal is determined from the count values of the pair of counters. (2) In claim 1, the time of the last rising edge or the last falling edge is defined as the time of the last rising edge or the last falling edge.
An optical scanning measuring device characterized by calculating the value from the sum of count values of a pair of counters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11432689U JPH0716963Y2 (en) | 1989-09-29 | 1989-09-29 | Optical scanning measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11432689U JPH0716963Y2 (en) | 1989-09-29 | 1989-09-29 | Optical scanning measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0352607U true JPH0352607U (en) | 1991-05-22 |
| JPH0716963Y2 JPH0716963Y2 (en) | 1995-04-19 |
Family
ID=31662704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11432689U Expired - Fee Related JPH0716963Y2 (en) | 1989-09-29 | 1989-09-29 | Optical scanning measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716963Y2 (en) |
-
1989
- 1989-09-29 JP JP11432689U patent/JPH0716963Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716963Y2 (en) | 1995-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |