JPS6466510A - Distance measuring apparatus - Google Patents
Distance measuring apparatusInfo
- Publication number
- JPS6466510A JPS6466510A JP62223474A JP22347487A JPS6466510A JP S6466510 A JPS6466510 A JP S6466510A JP 62223474 A JP62223474 A JP 62223474A JP 22347487 A JP22347487 A JP 22347487A JP S6466510 A JPS6466510 A JP S6466510A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- light emitting
- position detecting
- electrical signal
- emitting element
- 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
Landscapes
- Measurement Of Optical Distance (AREA)
Abstract
PURPOSE:To achieve a high stability and reproducibility of measurement, by calculating a distance to an object to be measured on the theory of trigonmetrical survey based on a difference signal component between an electrical signal at the emission of a light emitting element and that at the extinction thereof. CONSTITUTION:A light irradiator 1 is provided to irradiate an object 6 to be measured with luminous flux of a switchable light emitting element 2 condensed into a fine beam and a light receiver 8 is provided to focus a beam 7 reflected scattering from the object 6 being measured on a position detecting element 10 in an optical system so that an electrical signal is outputted corresponding to the focal position. A distance to the object 6 being measured is calculated with an arithmetic processor 13 on the theory of trigonmetrical survey from a difference signal component between an electrical signal 11 of the position detecting element 10 during the emission and that during the extinction by switching of the light emitting element 2. This can remove measuring errors due to a dark current of the position detecting element 10, external stray light, a drift of an amplifier and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62223474A JPS6466510A (en) | 1987-09-07 | 1987-09-07 | Distance measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62223474A JPS6466510A (en) | 1987-09-07 | 1987-09-07 | Distance measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6466510A true JPS6466510A (en) | 1989-03-13 |
Family
ID=16798705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62223474A Pending JPS6466510A (en) | 1987-09-07 | 1987-09-07 | Distance measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6466510A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59204785A (en) * | 1983-05-09 | 1984-11-20 | Kawasaki Heavy Ind Ltd | Optical detection |
| JPS60100011A (en) * | 1983-11-04 | 1985-06-03 | Canon Inc | Difference signal generating circuit |
| JPS6123910A (en) * | 1984-07-12 | 1986-02-01 | Matsushita Electric Ind Co Ltd | Optical range measuring device |
| JPS61105415A (en) * | 1984-10-29 | 1986-05-23 | Mitsubishi Electric Corp | Distance measuring instrument |
-
1987
- 1987-09-07 JP JP62223474A patent/JPS6466510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59204785A (en) * | 1983-05-09 | 1984-11-20 | Kawasaki Heavy Ind Ltd | Optical detection |
| JPS60100011A (en) * | 1983-11-04 | 1985-06-03 | Canon Inc | Difference signal generating circuit |
| JPS6123910A (en) * | 1984-07-12 | 1986-02-01 | Matsushita Electric Ind Co Ltd | Optical range measuring device |
| JPS61105415A (en) * | 1984-10-29 | 1986-05-23 | Mitsubishi Electric Corp | Distance measuring instrument |
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