JPH0283408U - - Google Patents
Info
- Publication number
- JPH0283408U JPH0283408U JP16409188U JP16409188U JPH0283408U JP H0283408 U JPH0283408 U JP H0283408U JP 16409188 U JP16409188 U JP 16409188U JP 16409188 U JP16409188 U JP 16409188U JP H0283408 U JPH0283408 U JP H0283408U
- Authority
- JP
- Japan
- Prior art keywords
- output
- light
- optical signal
- mixer
- mixes
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 4
- 238000005259 measurement Methods 0.000 claims 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は、本考案の一実施例に係る位相信号処
理回路のブロツク図、第２図は、本考案の一実施
例における光波測距儀を示す概略図、第３図は、
従来のヘテロダイン回路を示すブロツク図である
。
１ａ，１ｂ……光電変換素子、３ａ，３ｂ，７
，１０……ミキサ、４ａ，４ｂ……ローパス・フ
イルタ、５……位相計測器、６，９……局部発振
器、８，１１……フイルタ。
FIG. 1 is a block diagram of a phase signal processing circuit according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing a light wave distance meter according to an embodiment of the present invention, and FIG. 3 is a block diagram of a phase signal processing circuit according to an embodiment of the present invention.
1 is a block diagram showing a conventional heterodyne circuit. FIG. 1a, 1b...photoelectric conversion element, 3a, 3b, 7
, 10... Mixer, 4a, 4b... Low pass filter, 5... Phase measuring device, 6, 9... Local oscillator, 8, 11... Filter.
Claims (1)
射して、反射された測定光と参照光との位相差を
測定して、ターゲツトまでの距離を測る光波測距
儀において、それぞれ測定光および参照光を入力
して測定光信号および参照光信号を出力する第１
および第２の光電変換素子と、前記参照光信号と
第１の局部発振器の出力を混合するミキサと、そ
の和周波成分のみを通過させるフイルタと、その
出力信号と第２の局部発振器の出力とを混合する
ミキサと、その差周波成分のみを通過させるフイ
ルタと、その出力をローカル入力とするヘテロダ
イン方式周波数変換回路と、この変換回路の出力
側に接続された位相計測器とを具備してなること
を特徴とする位相信号処理回路。 The measurement light and reference light are input to a light wave rangefinder that measures the distance to the target by irradiating a light beam onto a mirror attached to the target and measuring the phase difference between the reflected measurement light and reference light. the first to output the measurement optical signal and the reference optical signal.
and a second photoelectric conversion element, a mixer that mixes the reference optical signal and the output of the first local oscillator, a filter that passes only the sum frequency component thereof, and a mixer that mixes the reference optical signal and the output of the second local oscillator. A mixer that mixes the signals, a filter that passes only the difference frequency component, a heterodyne frequency conversion circuit that uses the output as a local input, and a phase measuring device connected to the output side of this conversion circuit. A phase signal processing circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16409188U JPH0283408U (en) | 1988-12-19 | 1988-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16409188U JPH0283408U (en) | 1988-12-19 | 1988-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0283408U true JPH0283408U (en) | 1990-06-28 |
Family
ID=31449395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16409188U Pending JPH0283408U (en) | 1988-12-19 | 1988-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0283408U (en) |
-
1988
- 1988-12-19 JP JP16409188U patent/JPH0283408U/ja active Pending
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