JPS56608A - Range finder - Google Patents
Range finderInfo
- Publication number
- JPS56608A JPS56608A JP7517179A JP7517179A JPS56608A JP S56608 A JPS56608 A JP S56608A JP 7517179 A JP7517179 A JP 7517179A JP 7517179 A JP7517179 A JP 7517179A JP S56608 A JPS56608 A JP S56608A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light receiving
- emitting element
- light emitting
- receiving 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 improve sensitivity and resolution cosiderabry, by using one light emitting element at least and many light receiving elements to discriminate distance from the optical path constituted by the light emitting element and a light receiving element which has detected maximum light quantity.
CONSTITUTION: On the optical path between one light emitting element S at least and n-number light receiving elements R, pinhole HS where the irradiation light to the object passes through range finder front P of a distance calculation reference face and pinhole HR where the reflection light from the object passes through front P are provided. Now, if light emitting element S is caused to emit always light to detect the light quantity input to many light receiving elements R by electric scanning, the light quantity becomes maximum in a specific a light receiving element closely connected with existence position of the object. When this specific ligh receiving element is the K-th light receiving element, measured distance D is calculated by expression D=H×L/[W-L+(K-1)×B]. D is expressed by the function of K because H, L, W and B are physical constants peculiar to the range finder, and sensitivity and resolution can be improved considerably by increasing the value of K.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7517179A JPS56608A (en) | 1979-06-16 | 1979-06-16 | Range finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7517179A JPS56608A (en) | 1979-06-16 | 1979-06-16 | Range finder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56608A true JPS56608A (en) | 1981-01-07 |
Family
ID=13568479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7517179A Pending JPS56608A (en) | 1979-06-16 | 1979-06-16 | Range finder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56608A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5866810A (en) * | 1981-10-17 | 1983-04-21 | Mazda Motor Corp | Obstacle detector for automobile |
JPH01245112A (en) * | 1988-03-28 | 1989-09-29 | Iwatsu Electric Co Ltd | Displacement gage utilizing laser light |
JP2011209077A (en) * | 2010-03-29 | 2011-10-20 | Kyokko Denki Kk | Object detection device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4949625A (en) * | 1972-09-12 | 1974-05-14 | ||
JPS51120247A (en) * | 1975-04-14 | 1976-10-21 | Kyocera Corp | A range finder |
JPS5365753A (en) * | 1976-11-22 | 1978-06-12 | Toshiba Corp | Proximity distance detector |
JPS5436968A (en) * | 1977-08-30 | 1979-03-19 | Agency Of Ind Science & Technol | Range finder |
-
1979
- 1979-06-16 JP JP7517179A patent/JPS56608A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4949625A (en) * | 1972-09-12 | 1974-05-14 | ||
JPS51120247A (en) * | 1975-04-14 | 1976-10-21 | Kyocera Corp | A range finder |
JPS5365753A (en) * | 1976-11-22 | 1978-06-12 | Toshiba Corp | Proximity distance detector |
JPS5436968A (en) * | 1977-08-30 | 1979-03-19 | Agency Of Ind Science & Technol | Range finder |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5866810A (en) * | 1981-10-17 | 1983-04-21 | Mazda Motor Corp | Obstacle detector for automobile |
JPH046883B2 (en) * | 1981-10-17 | 1992-02-07 | Mazda Motor | |
JPH01245112A (en) * | 1988-03-28 | 1989-09-29 | Iwatsu Electric Co Ltd | Displacement gage utilizing laser light |
JP2011209077A (en) * | 2010-03-29 | 2011-10-20 | Kyokko Denki Kk | Object detection device |
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