CN102314044A - Distance measuring system and method - Google Patents
Distance measuring system and method Download PDFInfo
- Publication number
- CN102314044A CN102314044A CN2010102234532A CN201010223453A CN102314044A CN 102314044 A CN102314044 A CN 102314044A CN 2010102234532 A CN2010102234532 A CN 2010102234532A CN 201010223453 A CN201010223453 A CN 201010223453A CN 102314044 A CN102314044 A CN 102314044A
- Authority
- CN
- China
- Prior art keywords
- sensor
- brightness
- light
- sensing
- light source
- 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
Images
Landscapes
- Measurement Of Optical Distance (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a distance measuring system and a distance measuring method. The distance measuring method comprises the following steps that: a light source is used for emitting detection light to an object; the object reflects the detection light and forms reflection light; a sensor is used for sensing the reflection light; an exposure control unit which is coupled to the sensor performs brightness convergence on the reflection light according to the brightness of the reflection light sensed by the sensor; and a distance measurement device which is coupled to the sensor detects the distance between the object and the light source and/or the sensor according to the imaging position of the reflection light on the sensor. Therefore, by the distance measuring system and the distance measuring method provided by the invention, the accuracy of the detected distance can be improved, the exposure dynamic range of the sensor can be expanded, and the signal-to-noise ratio can be increased.
Description
Technical field
The invention relates to a kind of Range Measurement System and method thereof, refer to a kind of automatic exposure controlling mechanism of utilizing especially, increase the dynamic range of exposure and the Range Measurement System and the method thereof of signal noise ratio.
Background technology
In the prior art, distance measuring equipment is to object emission detected light to be measured, and receives by the object reflection reflected light that detected light produced to be measured, extrapolates distance measuring equipment and distance between objects to be measured through catoptrical image space again.Yet; In the prior art; Distance measuring equipment is when the reflected light that sensing object to be measured is produced; The exposure control module of its sensing apparatus can't be along with time shutter, the sensing modes of sensing apparatus, the output gain of sensing apparatus and the supply of current of projection source of catoptrical brightness automatic dynamic adjustment sensing apparatus, to such an extent as to distance measuring equipment can't increase the dynamic range and the signal noise ratio of exposure.In addition; Prior art can't automatic dynamic time shutter, the sensing modes of sensing apparatus, the output gain of sensing apparatus and the supply of current of projection source of adjustment sensing apparatus; So can cause sensing apparatus overexposure or under-exposed situation so that obtain incorrect testing distance, and the electric energy service efficiency is lower.
Summary of the invention
One embodiment of the invention provide a kind of Range Measurement System.This Range Measurement System comprises light source, sensor, exposure control module and distance measuring equipment.This light source is in order to towards object emission detected light, and this detected light is in the surface reflection of this object and form reflected light; This sensor is in order to this reflected light of sensing; This exposure control module is in order to according to this sensor institute this catoptrical brightness of sensing this reflected light is carried out the brightness convergence; Reaching this distance measuring equipment is in order to according to the position of this reflected light in this sensor, detects the distance of this object and this light source and/or this sensor.
An also embodiment of the present invention provides a kind of method of range observation.This method comprises uses light source to launch detected light towards object, and this detected light is in the surface reflection of this object and form reflected light; Use this reflected light of sensor sensing; According to this sensor institute this catoptrical brightness of sensing, this reflected light is carried out the brightness convergence; And, detect the distance of this object and this light source and/or this sensor according to via the position of this reflected light in this sensor.
A kind of Range Measurement System provided by the present invention, the exposure control module that it comprises can to the supply of current of the output gain of the sensing modes of time shutter of different application automatic dynamic adjustment sensor, this sensor, this sensor and/or light source with the catoptrical brightness controlling this sensor and sense can be unsaturated also can be too not dark.Therefore, this Range Measurement System can promote the degree of accuracy of range finding, the dynamic range that increases this exposure sensor, increase signal noise ratio, the scope that increases measuring distance and the degree of stability that increases this Range Measurement System.
Description of drawings
Fig. 1 is the synoptic diagram of one embodiment of the invention explanation Range Measurement System.
Fig. 2 be explanation when light source opens and closes, first image and second image of sensor institute sensing, and device for identifying compares first image and second image, reflexes to the reflected light of sensor via subject surface to be measured with judgement.
Fig. 3 is that explanation exposure control module carries out brightness convergent synoptic diagram according to the catoptrical brightness of sensor institute sensing to reflected light.
Fig. 4 explains that the catoptrical brightness of sensor institute sensing is to the synoptic diagram of the relation of exposure value through the exposure control module carries out the brightness convergence to reflected light after.
Fig. 5 is the synoptic diagram that an also embodiment of the present invention explains Range Measurement System.
Fig. 6 is the process flow diagram that an also embodiment of the present invention explains a kind of method of range observation.
Wherein, description of reference numerals is following:
100,500 Range Measurement Systems
102,502 light sources
104,504 first camera lenses
106,506 second camera lenses
108,508 sensors
110 device for identifying
112,512 exposure control modules
114,514 distance measuring equipments
202 first images
204 second images
206,208,210 bright spots
212 the 3rd images
516 infrared filters
The 600-616 step
Embodiment
Please with reference to Fig. 1, Fig. 1 is the synoptic diagram of one embodiment of the invention explanation Range Measurement System 100.Range Measurement System 100 comprises light source 102, first camera lens 104, second camera lens 106, sensor 108, device for identifying 110, exposure control module 112 and distance measuring equipment 114.Light source 102 is that wherein light source 102 can be infrared light light emitting diode (IR LED) light source in order to court's object emission to be measured detected light.Second camera lens 106 is installed between light source 102 and the object to be measured, converge to the surface of object to be measured in order to the detected light that light source 102 is sent, and the detected light after converging forms reflected light after the surface reflection of object to be measured.First camera lens 104 is to be installed between sensor 108 and the object to be measured, in order to reflected light is converged to sensor 108.Sensor 108 is the reflected light that converged in order to sensing, wherein sensor 108 when light source 102 is opened, sensing first image; When light source 102 is closed, sensing second image.Device for identifying 110 is coupled to sensor 108, in order to compare first image and second image, is reflexed to the position at the reflected light place of sensor 108 by subject surface to be measured with identification.Exposure control module 112 is coupled to sensor 108; In order to reflected light is carried out the brightness convergence, make that the catoptrical brightness of 108 sensings of sensor can supersaturation or deficiency according to the catoptrical brightness of 108 sensings of sensor and the position at reflected light place.Distance measuring equipment 114 is coupled to sensor 108, in order to according to the position of reflected light in sensor 108 imagings, utilizes principle of triangulation to calculate the distance between object to be measured and light source 102 and/or the sensor 108.
Please with reference to Fig. 2; Fig. 2 is that explanation is when light source 102 opens and closes; First image 202 of 108 sensings of sensor and second image 204, and device for identifying 110 comparison first image and second images are to judge the catoptrical synoptic diagram that reflexes to sensor 108 via subject surface to be measured.As shown in Figure 2, first image 202 comprises the bright spot 210 that bright spot 206,208 that background light source causes and object to be measured cause; In second image 204, because light source 102 closes, so include only the bright spot 206,208 that background light source causes.So, can get rid of sensor 108 behind device for identifying 110 comparison first images 202 and second image 204 and sense the bright spot 206,208 that background light source is formed images on sensor 108, obtain including only the 3rd image 212 of the bright spot 210 that object to be measured causes.
Please with reference to Fig. 3 and Fig. 4, Fig. 3 is that explanation exposure control module 112 carries out brightness convergent synoptic diagram according to the catoptrical brightness of 108 sensings of sensor to reflected light.Fig. 4 explains that 108 catoptrical brightness of sensing of sensor are to the synoptic diagram of the relation of exposure value after 112 pairs of reflected light of exposure control module carry out the brightness convergence.When object separation to be measured when measuring system 100 far causes catoptrical brightness too dark, exposure control module 112 at first prolongs the time shutter of sensor 108.If; When the exposure value that prolonging exposure time obtains to the first Preset Time value (the A point of Fig. 3) sensor 108 is still not enough, switches sensing modes to the high sensitive sensing modes of sensor 108 this moment and time shutter of sensor 108 down is adjusted to first adjusted value from the first Preset Time value.If the exposure value that sensor 108 obtains is still not enough, then the time shutter continues up to increase from first adjusted value.When the maximum exposure of adjusting to sensor 108 during the time, exposure control module 112 begins to increase the yield value of sensor 108 output signals.Therefore, as shown in Figure 4, will make the catoptrical brightness value and the exposure value of 108 sensings of sensor that linear relationship is arranged via exposure control module 112.In addition, the supply of current that exposure control module 112 also can be adjusted light source 102 with increase light source 102 launched the brightness of detected light, and then increase catoptrical brightness.But embodiments of the invention are not limited to maximum exposure that the time shutter adjusts to sensor 108 during the time, just begin to increase the yield value of sensor 108 output signals; The maximum exposure that embodiments of the invention also can not adjusted to sensor 108 in the time shutter as yet promptly begins to increase the yield value of sensor 108 output signals during the time.
In addition, when object separation to be measured from measuring system 100 is nearer when causing reflected light brightness too bright, exposure control module 112 reduces the yield value of sensor 108 output signals earlier, with the value of the catoptrical brightness of decay sensor 108 sensings.If the catoptrical brightness of sensor 108 sensings is still too bright, the time shutter of then make public control module 112 and then minimizing sensor 108.If reduce exposure value that the time shutter obtains to the second Preset Time value (the B point of Fig. 3) sensor 108 when still too big, switch sensing modes to the low sensitivity sensing modes of sensor 108 this moment and time shutter of sensor 108 up is adjusted to second adjusted value from the second Preset Time value.If the exposure value that sensor 108 obtains is still too big, then the time shutter continues down to reduce from second adjusted value.So, as shown in Figure 4, will make the catoptrical brightness value and the exposure value of 108 sensings of sensor that linear relationship is arranged via exposure control module 112.In addition, the supply of current that exposure control module 112 also can be adjusted light source 102 with reduce light source 102 launched the brightness of detected light, and then reduce catoptrical brightness.But embodiments of the invention are not subject to the yield value that reduces sensor 108 output signals earlier, and then the adjustment time shutter; Embodiments of the invention also can be adjusted the time shutter earlier, and then reduce the yield value of sensor 108 output signals, or both can walk abreast simultaneously.
In addition; Exposure control module 112 can be directed against the different application situation, and the output gain of the time shutter through automatic dynamic adjustment sensor 108, the sensing modes of sensor 108, sensor 108 and/or the supply of current of light source 102 are to control the catoptrical brightness that sensor 108 senses.For example under some certain applications situation, exposure control module 112 can be adjusted catoptrical brightness to the GTG value about 200 that sensor 108 senses.In addition, exposure control module 112 also can make the dynamic range of exposure increase through the sensing modes (high and low susceptibility sensing modes) of adjustment sensor 108.
Distance measuring equipment 114 is coupled to sensor 108, according to the position (x1 of Fig. 1, x2 point) of reflected light in sensor 108 imagings, utilizes principle of triangulation to judge the distance of object to be measured and light source 102 and/or sensor 108.
Please with reference to Fig. 5, Fig. 5 is the synoptic diagram that an also embodiment of the present invention explains Range Measurement System 500.Range Measurement System 500 comprises light source 502, first camera lens 504, second camera lens 506, sensor 508, exposure control module 512 and distance measuring equipment 514, and wherein sensor 508 also comprises infrared filter 516.The difference of Range Measurement System 500 and Range Measurement System 100 is that Range Measurement System 500 does not have device for identifying.Because the light that infrared filter 516 can filter beyond the infrared ray gets into sensor 508; So sensor 508 must sensing first image (opening light source 502) and second image (closing light source 502) can directly pick out the reflected light that reflexes to sensor 508 via subject surface to be measured.In addition, Range Measurement System 500 all the other principle of operation are all identical with Range Measurement System 100, repeat no more at this.
An also embodiment of the present invention then is the catoptrical method of identification of comprehensive distance measuring system 100 and Range Measurement System 500; That is to say and utilize sensor sensing first image (unlatching light source) and second image (closing light source) simultaneously, and infrared filter identification reflected light.All the other principle of operation are identical with Range Measurement System 100 and Range Measurement System 500, repeat no more at this.
An also embodiment of the present invention utilizes laser as light source, and the difference of itself and Range Measurement System 100 is must not utilize first camera lens and the second camera lens optically focused, and all the other principle of operation are all identical with Range Measurement System 100, repeat no more at this.
Please with reference to Fig. 6, Fig. 6 is the process flow diagram that an also embodiment of the present invention explains a kind of method of range observation.The method of Fig. 6 is that its step is that details are as follows through Range Measurement System shown in Figure 1 100 explanations:
Step 600: beginning;
Step 602: light source 102 is launched detected light towards object to be measured, and through the surface of second camera lens 106 with detected light optically focused to object to be measured;
Step 604: first camera lens 104 will be via reflected light optically focused to the sensor 108 of subject surface reflection to be measured;
Step 606: when light source 102 is opened, use sensor 108 sensings first image;
Step 608: when light source 102 is closed, use sensor 108 sensings second image;
Step 610: device for identifying 110 is compared first image and second images, reflexes to the reflected light of sensor 108 via subject surface in order to identification;
Step 612: exposure control module 112 carries out the convergence of brightness according to 108 catoptrical brightness of sensing of sensor to reflected light;
Step 614: distance measuring equipment 114 is judged the distance of object to be measured and light source 102 and/or sensor 108 according to via the position of reflected light in sensor 108 imagings;
Step 616: finish.
In step 612; Exposure control module 112 can through automatic dynamic adjust catoptrical brightness value that the supply of current of output gain and/or light source 102 of sensing modes, the sensor 108 of time shutter, the sensor 108 of sensor 108 senses with control sensor 108 can be unsaturated also can be too not dark, to promote the degree of accuracy of distance measuring equipment 114.The 112 pairs of reflected light of control module that wherein make public carry out brightness convergent process, and details are as follows: when 108 of sensors obtain catoptrical brightness when too dark; The time shutter that increases sensor 108 is up to the first Preset Time value (the A point of Fig. 3); Switch sensing modes to the high sensitive sensing modes of sensor 108 this moment and time shutter of sensor 108 down is adjusted to first adjusted value from the first Preset Time value; And then up increase from first adjusted value; The maximum exposure that up increases to sensor 108 when first adjusted value is during the time, and exposure control module 112 begins to increase the yield value of sensor 108 output signals; In addition, 112 pairs of exposure control modules also utilize the supply of current that increases light source 102, to increase detected light and catoptrical brightness.When this sensor obtains catoptrical brightness when too bright; The time shutter that reduces sensor 108 is up to the second Preset Time value; Switch sensing modes to the low sensitivity sensing modes of sensor 108 this moment and time shutter of sensor 108 up is adjusted to second adjusted value from the second Preset Time value, and then down reduce from second adjusted value; In addition, exposure control module 112 also utilizes the supply of current that reduces light source 102, to reduce detected light and catoptrical brightness.
An also embodiment of the present invention utilizes infrared light sources and infrared filter identification reflected light, or utilizes sensor sensing first image (unlatching light source) and second image (closing light source) simultaneously, and infrared filter identification reflected light.
In addition, therefore the embodiment of Fig. 6 laser also capable of using just needn't utilize first camera lens and the second camera lens optically focused as light source.
In sum; The method of Range Measurement System provided by the present invention and range observation, the catoptrical brightness that its exposure control module can sense with the control sensor to the supply of current of the output gain of the sensing modes of time shutter of different application automatic dynamic adjustment sensor, sensor, sensor and/or light source can be unsaturated also can be too not dark.So, the method for Range Measurement System provided by the present invention and range observation just can promote the degree of accuracy of range finding, the dynamic range that increases exposure sensor and increase signal noise ratio.
The above is merely the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (21)
1. Range Measurement System comprises:
Light source, in order to towards object emission detected light, and this detected light is in the surface reflection of this object and form reflected light;
Sensor is in order to this reflected light of sensing;
This Range Measurement System is characterised in that also and comprises:
The exposure control module is in order to carry out the brightness convergence according to this sensor institute this catoptrical brightness of sensing to this reflected light; And
Distance measuring equipment in order to according to the position of this reflected light in this sensor, is detected the distance of this object and this light source and/or this sensor.
2. Range Measurement System as claimed in claim 1; It is characterized in that; Also comprise first camera lens and second camera lens, this first camera lens is located between this sensor and this object, in order to this reflected light is focused to this sensor; And this second camera lens is located between this light source and this object, in order to this light source is sent the surface that this detected light is focused to this object.
3. according to claim 1 or claim 2 Range Measurement System is characterized in that, also comprises device for identifying, gathers this reflected light of this sensor in order to identification via this first camera lens, wherein this sensor when this light source is opened, sensing first image; When this light source is closed, sensing second image; This device for identifying is compared this first image and this second image afterwards, in order to obtain this reflected light that is reflexed to this sensor by this subject surface.
4. Range Measurement System as claimed in claim 1 is characterized in that, this light source is to be infrared ray, and this sensor also comprises infrared filter, gets into this sensor in order to stop infrared ray with UV light.
5. Range Measurement System as claimed in claim 1 is characterized in that, this exposure control module is the time shutter according to this catoptrical this sensor of brightness adjustment of institute's sensing, in order to increase or to reduce the time that this reflected light gets into this sensor.
6. Range Measurement System as claimed in claim 1; It is characterized in that; This exposure control module is to be high sensitive sensing modes or low sensitivity sensing modes according to this this sensor of catoptrical brightness adjustment of institute's sensing, receives this catoptrical efficient in order to adjust this sensor.
7. Range Measurement System as claimed in claim 1; It is characterized in that; This exposure control module is the yield value according to the signal of exporting after this catoptrical this this reflected light of sensor sensing of brightness adjustment of institute's sensing, in order to amplify or to decay this this reflected light of sensor sensing value of representing this catoptrical brightness of exporting afterwards.
8. Range Measurement System as claimed in claim 1; It is characterized in that; This exposure control module further comprises the supply of current of adjusting this light source, in order to increasing or to reduce the brightness of this detected light that this light source is launched, and then changes the brightness of this this sensor of reflected light entering.
9. Range Measurement System as claimed in claim 1 is characterized in that, this light source is to be light emitting diode or LASER Light Source.
10. the method for a range observation comprises:
Use light source to launch detected light, and this detected light is in the surface reflection of this object and form reflected light towards object;
Use this reflected light of sensor sensing;
The method of this range observation is characterised in that also and comprises:
According to this sensor institute this catoptrical brightness of sensing, this reflected light is carried out the brightness convergence; And
According to via the position of this reflected light, detect the distance of this object and this light source and/or this sensor in this sensor.
11. method as claimed in claim 10 is characterized in that, comprises that also using first camera lens that this subject surface is reflected this reflected light is focused to this sensor, and uses second camera lens that this light source is launched the surface that this detected light is focused to this object.
12. method as claimed in claim 10 is characterized in that, uses this sensor light sensing to comprise:
When this light source is opened, use this sensor sensing first image;
When this light source is closed, use this sensor sensing second image; And
Compare this first image and this second image, in order to obtain this reflected light that reflexes to this sensor via this subject surface.
13. method as claimed in claim 10; It is characterized in that; This detected light that this light source sent and be to be IR from this reflected light of this subject surface reflection, and this sensor also comprises the use infrared filter, gets into this sensor in order to stop infrared ray with UV light.
14. method as claimed in claim 10 is characterized in that, this reflected light is carried out the brightness convergence comprise:
When this sensor obtains this catoptrical brightness when too dark; The time shutter that increases this sensor is up to the Preset Time value; Sensing modes to the high sensitive sensing modes that switches this sensor this moment also down is adjusted to adjusted value with the time shutter of this sensor from this Preset Time value; And then up increase from this adjusted value, the maximum exposure that up increases to this sensor when this adjusted value is during the time, and the light signal of this sensor institute sensing is amplified.
15. method as claimed in claim 14 is characterized in that, this reflected light is carried out the brightness convergence also comprise: before the time shutter that increases this sensor, increase the supply of current of this light source earlier, in order to increase this detected light and this catoptrical brightness.
16. method as claimed in claim 10 is characterized in that, this reflected light is carried out the brightness convergence comprise:
When this sensor obtains this catoptrical brightness when too bright; The time shutter that reduces this sensor is up to the Preset Time value; Sensing modes to the low sensitivity sensing modes that switches this sensor this moment also up is adjusted to adjusted value with the time shutter of this sensor from this Preset Time value, and then down reduces from this adjusted value.
17. method as claimed in claim 16 is characterized in that, this reflected light is carried out the brightness convergence also comprise: before the time shutter that reduces this sensor, reduce the supply of current of this light source earlier, in order to reduce this detected light and this catoptrical brightness.
18. method as claimed in claim 10 is characterized in that, this reflected light is carried out the brightness convergence comprise:
When this sensor obtains this catoptrical brightness when too dark, increase the time shutter of this sensor,
When this sensor obtains this catoptrical brightness when too bright, reduce the time shutter of this sensor.
19. method as claimed in claim 10 is characterized in that, this reflected light is carried out the brightness convergence comprise:
When this sensor obtains this catoptrical brightness when too dark, switch sensing modes to the high sensitive sensing modes of this sensor, when this sensor obtains this catoptrical brightness when too bright, switch sensing modes to the low sensitivity sensing modes of this sensor.
20. method as claimed in claim 10 is characterized in that, this reflected light is carried out the brightness convergence comprise:
When this sensor obtains this catoptrical brightness when too dark, the light signal of this sensor institute sensing is amplified, and this sensor obtains this catoptrical brightness when too bright, the attenuated optical signal of this sensor institute sensing.
21. method as claimed in claim 10 is characterized in that, this reflected light is carried out the brightness convergence comprise:
When this sensor obtains this catoptrical brightness when too dark, increase the electric current of this light source, and this sensor obtains this catoptrical brightness when too bright, reduce the electric current of this light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102234532A CN102314044A (en) | 2010-07-02 | 2010-07-02 | Distance measuring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102234532A CN102314044A (en) | 2010-07-02 | 2010-07-02 | Distance measuring system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102314044A true CN102314044A (en) | 2012-01-11 |
Family
ID=45427331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102234532A Pending CN102314044A (en) | 2010-07-02 | 2010-07-02 | Distance measuring system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102314044A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135625A (en) * | 2014-07-23 | 2014-11-05 | 北京控制工程研究所 | Adjusting method of exposure time of intersection measurement camera |
| CN104964810A (en) * | 2015-06-16 | 2015-10-07 | 苏州佳世达光电有限公司 | Light source detection system and method |
| CN107113379A (en) * | 2016-08-09 | 2017-08-29 | 深圳市瑞立视多媒体科技有限公司 | The brightness adjusting method of infrared light supply moves with device, optics and catches video camera |
| CN107392955A (en) * | 2017-08-05 | 2017-11-24 | 刘承昊 | A kind of depth of field estimation device and method based on brightness |
| CN107850669A (en) * | 2015-07-31 | 2018-03-27 | 松下知识产权经营株式会社 | Ranging camera device and solid camera head |
| CN108571927A (en) * | 2017-03-10 | 2018-09-25 | 株式会社三丰 | Optical displacement meter, optical displacement meter adjusting method and optical displacement measurement method |
| CN110068307A (en) * | 2015-04-21 | 2019-07-30 | 原相科技股份有限公司 | Range-measurement system and the method for measuring distance |
| CN110307822A (en) * | 2018-03-20 | 2019-10-08 | 原相科技股份有限公司 | Apart from arrangement for detecting |
| CN110493524A (en) * | 2019-08-28 | 2019-11-22 | 深圳市道通智能航空技术有限公司 | A kind of survey light method of adjustment, device, equipment and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522492A (en) * | 1981-07-10 | 1985-06-11 | Canon Kabushiki Kaisha | Distance measuring device |
| US5534991A (en) * | 1992-03-13 | 1996-07-09 | Canon Kabushiki Kaisha | Active distance measuring apparatus |
| JP2000147367A (en) * | 1998-11-13 | 2000-05-26 | Olympus Optical Co Ltd | Range finder |
| US20040089791A1 (en) * | 2002-11-08 | 2004-05-13 | Hosiden Corporation | Photoelectric sensor |
| CN1655041A (en) * | 2005-04-04 | 2005-08-17 | 北京中星微电子有限公司 | Exposure regulating method and device |
| CN1940474A (en) * | 2005-09-30 | 2007-04-04 | 夏普株式会社 | Optical ranging sensor and electrical equipment |
| US20080094643A1 (en) * | 2006-10-05 | 2008-04-24 | Keyence Corporation | Optical displacement meter, optical displacement measuring method, optical displacement measuring program, computer-readable recording medium , and device that records the program |
| CN101655350A (en) * | 2008-08-20 | 2010-02-24 | 夏普株式会社 | Optical distance measuring sensor and electronic device |
-
2010
- 2010-07-02 CN CN2010102234532A patent/CN102314044A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522492A (en) * | 1981-07-10 | 1985-06-11 | Canon Kabushiki Kaisha | Distance measuring device |
| US5534991A (en) * | 1992-03-13 | 1996-07-09 | Canon Kabushiki Kaisha | Active distance measuring apparatus |
| JP2000147367A (en) * | 1998-11-13 | 2000-05-26 | Olympus Optical Co Ltd | Range finder |
| US20040089791A1 (en) * | 2002-11-08 | 2004-05-13 | Hosiden Corporation | Photoelectric sensor |
| CN1655041A (en) * | 2005-04-04 | 2005-08-17 | 北京中星微电子有限公司 | Exposure regulating method and device |
| CN1940474A (en) * | 2005-09-30 | 2007-04-04 | 夏普株式会社 | Optical ranging sensor and electrical equipment |
| US20080094643A1 (en) * | 2006-10-05 | 2008-04-24 | Keyence Corporation | Optical displacement meter, optical displacement measuring method, optical displacement measuring program, computer-readable recording medium , and device that records the program |
| CN101655350A (en) * | 2008-08-20 | 2010-02-24 | 夏普株式会社 | Optical distance measuring sensor and electronic device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135625B (en) * | 2014-07-23 | 2017-06-13 | 北京控制工程研究所 | A kind of method of adjustment of intersection measurement camera exposure time |
| CN104135625A (en) * | 2014-07-23 | 2014-11-05 | 北京控制工程研究所 | Adjusting method of exposure time of intersection measurement camera |
| CN110068307A (en) * | 2015-04-21 | 2019-07-30 | 原相科技股份有限公司 | Range-measurement system and the method for measuring distance |
| CN110068307B (en) * | 2015-04-21 | 2021-09-17 | 原相科技股份有限公司 | Distance measuring system and distance measuring method |
| CN104964810A (en) * | 2015-06-16 | 2015-10-07 | 苏州佳世达光电有限公司 | Light source detection system and method |
| CN104964810B (en) * | 2015-06-16 | 2017-07-25 | 苏州佳世达光电有限公司 | light source detecting system and method |
| CN107850669A (en) * | 2015-07-31 | 2018-03-27 | 松下知识产权经营株式会社 | Ranging camera device and solid camera head |
| CN107113379A (en) * | 2016-08-09 | 2017-08-29 | 深圳市瑞立视多媒体科技有限公司 | The brightness adjusting method of infrared light supply moves with device, optics and catches video camera |
| CN107113379B (en) * | 2016-08-09 | 2018-06-12 | 深圳市瑞立视多媒体科技有限公司 | The brightness adjusting method of infrared light supply moves with device, optics and catches video camera |
| CN108571927A (en) * | 2017-03-10 | 2018-09-25 | 株式会社三丰 | Optical displacement meter, optical displacement meter adjusting method and optical displacement measurement method |
| CN108571927B (en) * | 2017-03-10 | 2021-12-21 | 株式会社三丰 | Optical displacement meter, optical displacement meter adjusting method, and optical displacement measuring method |
| CN107392955B (en) * | 2017-08-05 | 2020-09-15 | 刘承昊 | Depth of field estimation device and method based on brightness |
| CN107392955A (en) * | 2017-08-05 | 2017-11-24 | 刘承昊 | A kind of depth of field estimation device and method based on brightness |
| CN110307822A (en) * | 2018-03-20 | 2019-10-08 | 原相科技股份有限公司 | Apart from arrangement for detecting |
| CN110307822B (en) * | 2018-03-20 | 2021-10-29 | 原相科技股份有限公司 | Distance detecting device |
| CN110493524A (en) * | 2019-08-28 | 2019-11-22 | 深圳市道通智能航空技术有限公司 | A kind of survey light method of adjustment, device, equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102314044A (en) | Distance measuring system and method | |
| TWI425182B (en) | Distance measurement system and method thereof | |
| CN109791195B (en) | Adaptive transmit power control for optical access | |
| KR101735576B1 (en) | Improvements to Particle Detectors | |
| KR101205039B1 (en) | Safe eye detection | |
| JP2018528633A5 (en) | ||
| KR101296780B1 (en) | Obstacle Detecting system using of laser, and method thereof | |
| TW200619806A (en) | Observation apparatus having focal point control mechanism | |
| US11313968B2 (en) | Interference signal rejection in LIDAR systems | |
| US20030099470A1 (en) | Apparatus and method for compensating auto-focus of image capture device by utilizing red-eye eliminating function | |
| EP1858254A3 (en) | Image capture apparatus with improved flash control | |
| US20200142071A1 (en) | Tof module and object recognition device using tof module | |
| CN107782732B (en) | Automatic focusing system, method and image detection instrument | |
| CN105212264B (en) | A kind of glue heap detection means of cigarette rolling up and connecting machine | |
| JP6739074B2 (en) | Distance measuring device | |
| US10855929B1 (en) | Monitoring method of monitoring camera and monitoring camera | |
| CN101329491B (en) | Photographing apparatus and method | |
| CN211652599U (en) | Image acquisition system for acquiring standard images | |
| KR102250085B1 (en) | Optical inspection apparatus | |
| JP2014115157A (en) | Oil film detector | |
| KR20130094147A (en) | Apparatus of processing image based on confocal and method thereof | |
| CN209087158U (en) | Object early warning system waterborne | |
| KR101350861B1 (en) | System and method for controlling ir led of camera system using wavelength areness function of light | |
| CN102346384B (en) | Method for regulating optimum focal plane for silicon chip and exposure device thereof | |
| KR20170060824A (en) | portable speed enforcement apparatus using dual laser technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |