JPH01180607U - - Google Patents
Info
- Publication number
- JPH01180607U JPH01180607U JP7215588U JP7215588U JPH01180607U JP H01180607 U JPH01180607 U JP H01180607U JP 7215588 U JP7215588 U JP 7215588U JP 7215588 U JP7215588 U JP 7215588U JP H01180607 U JPH01180607 U JP H01180607U
- Authority
- JP
- Japan
- Prior art keywords
- output
- position detection
- circuit
- optical position
- preamplifier
- 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
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図はこの考案の一実施例による光位置検出
装置のブロツク図、第２図は同上実施例の動作を
説明するためのタイムチヤート、第３図は従来の
光位置検出装置のブロツク図、第４図は光位置検
出素子の一例を示す断面図である。
１……光位置検出素子、２……前置増幅器、３
……第１のスイツチ、４……反転回路、５……積
分回路、６……比較回路、７……単安定マルチバ
イブレータ、５２……第２のスイツチ。なお、図
中、同一符号は同一、または相当部分を示す。
FIG. 1 is a block diagram of an optical position detecting device according to an embodiment of this invention, FIG. 2 is a time chart for explaining the operation of the same embodiment, and FIG. 3 is a block diagram of a conventional optical position detecting device. FIG. 4 is a sectional view showing an example of an optical position detection element. 1... Optical position detection element, 2... Preamplifier, 3
...First switch, 4...Inverting circuit, 5... Integrating circuit, 6... Comparing circuit, 7... Monostable multivibrator, 52... Second switch. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
つの出力端子から出力する光位置検出素子と、こ
の光位置検出素子から出力される二つの光電流の
うち一つの光電流を増幅する前置増幅回路と、上
記光位置検出素子の他方の出力端子を開放と接地
する第１のスイツチと、前記前置増幅器の出力を
反転する反転回路と、第２のスイツチにより前記
前置増幅器の出力に対応した初期値を与えること
のできる積分回路と、この積分回路の出力と所定
の電圧を比較する比較回路と、この比較回路の出
力によりトリガされて前記第１および第２のスイ
ツチを制御するとともに前記光入射位置に対応し
た周波数出力として取り出す単安定マルチバイブ
レータとを備えた光位置検出装置。 An optical position detection element that outputs a photocurrent corresponding to the irradiation position from two output terminals when irradiated with light, and a front end that amplifies one of the two photocurrents output from this optical position detection element. an amplifier circuit, a first switch that opens and grounds the other output terminal of the optical position detection element, an inversion circuit that inverts the output of the preamplifier, and a second switch that connects the output of the preamplifier to the output terminal of the preamplifier. an integrating circuit capable of providing a corresponding initial value; a comparator circuit that compares the output of the integrating circuit with a predetermined voltage; and a comparator circuit that is triggered by the output of the comparator circuit to control the first and second switches. An optical position detection device comprising a monostable multivibrator that extracts a frequency output corresponding to the light incident position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7215588U JPH01180607U (en) | 1988-05-30 | 1988-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7215588U JPH01180607U (en) | 1988-05-30 | 1988-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01180607U true JPH01180607U (en) | 1989-12-26 |
Family
ID=31297329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7215588U Pending JPH01180607U (en) | 1988-05-30 | 1988-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01180607U (en) |
-
1988
- 1988-05-30 JP JP7215588U patent/JPH01180607U/ja active Pending
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