JPS6473281A - Laser range finder - Google Patents
Laser range finderInfo
- Publication number
- JPS6473281A JPS6473281A JP22960187A JP22960187A JPS6473281A JP S6473281 A JPS6473281 A JP S6473281A JP 22960187 A JP22960187 A JP 22960187A JP 22960187 A JP22960187 A JP 22960187A JP S6473281 A JPS6473281 A JP S6473281A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- oscillator
- laser
- clock
- 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
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
PURPOSE:To achieve a higher distance measuring accuracy with the same effect as an increase in the number of clock pulses, by employing two clock pulse oscillators slightly different in the oscillation frequency. CONSTITUTION:An oscillation interval of a laser oscillator 1 is controlled by a signal obtained by dividing the frequency of a pulse signal oscillated from a clock pulse oscillator 2 with a frequency dividing circuit 3. A laser light from the laser oscillator 1 is made to irradiate a target object 10 through a transmitting/receiving optical system 4. Reflected light on the target object 10 is converted into an electrical signal with a photo detector 5 through the transmitting/receiving optical system 4 and then, sent to a counting circuit 5. The counting circuit 6 is started to count a pulse from a clock pulse oscillator 7 by a signal synchronizing with a laser oscillation from a laser oscillator 1 until stopped by a signal from the photo detector 5. The oscillation frequency of the clock pulse oscillators 2 and 7 is differentiated by 1/1,000 or less of the clock frequency beforehand.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22960187A JPH0776790B2 (en) | 1987-09-16 | 1987-09-16 | Laser range finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22960187A JPH0776790B2 (en) | 1987-09-16 | 1987-09-16 | Laser range finder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6473281A true JPS6473281A (en) | 1989-03-17 |
JPH0776790B2 JPH0776790B2 (en) | 1995-08-16 |
Family
ID=16894736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22960187A Expired - Lifetime JPH0776790B2 (en) | 1987-09-16 | 1987-09-16 | Laser range finder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0776790B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009063573A (en) * | 2007-09-07 | 2009-03-26 | Samsung Electronics Co Ltd | Distance measuring method and apparatus |
JP2009541760A (en) * | 2006-07-04 | 2009-11-26 | ペッパール ウント フュフス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method and apparatus for photoelectric non-contact distance measurement based on moving time principle |
-
1987
- 1987-09-16 JP JP22960187A patent/JPH0776790B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009541760A (en) * | 2006-07-04 | 2009-11-26 | ペッパール ウント フュフス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method and apparatus for photoelectric non-contact distance measurement based on moving time principle |
JP2009063573A (en) * | 2007-09-07 | 2009-03-26 | Samsung Electronics Co Ltd | Distance measuring method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0776790B2 (en) | 1995-08-16 |
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