CN106524913B - The position mark method and device in light beam incident point - Google Patents
The position mark method and device in light beam incident point Download PDFInfo
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- CN106524913B CN106524913B CN201611046883.5A CN201611046883A CN106524913B CN 106524913 B CN106524913 B CN 106524913B CN 201611046883 A CN201611046883 A CN 201611046883A CN 106524913 B CN106524913 B CN 106524913B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005286 illumination Methods 0.000 claims abstract description 61
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000002834 transmittance Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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Abstract
The invention discloses the position mark methods and device in a kind of light beam incident point.The position mark method in the light beam incident point includes: the intensity of illumination for corresponding to the laser beam of projection on the display screen for receiving at least three light intensity detectors of the different location for being located at display screen and detecting respectively；According to the intensity of illumination that each light intensity detector detects, the Prediction distance in the light beam incident point and each light intensity detector that obtain the laser beam projects on the display screen is calculated；According to each Prediction distance, the position of the light beam incident point on the display screen is determined, and generate position mark at the location.Using the present invention, incident point of the laser beam projects into the display screen can be shown in display screen, to improve user experience.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a device for marking a position of a light beam projection point.
Background
In scenes such as daily teaching or business conferences, when a presenter uses a large display screen for presentation, the presenter often needs to use a laser pen to indicate the content on the large display screen so as to emphasize the content being explained and deepen the impression of audiences, thereby achieving a better presentation effect. However, when the laser pen is used to indicate content in some display screens (e.g., liquid crystal display screens), due to the absorption of light by the display screens, the laser points projected by the laser pen cannot be displayed in the display screens, or the displayed laser points are very blurred, so that the effect of indicating content cannot be achieved, and therefore, poor user experience is brought.
Disclosure of Invention
The invention provides a method and a device for marking the position of a light beam projection point, which can display the projection point projected to a display screen by a laser beam in the display screen, thereby improving the user experience.
The invention provides a position marking method of a light beam projection point, which specifically comprises the following steps:
receiving the illumination intensity of at least three light intensity detectors positioned at different positions of a display screen and respectively detected by the at least three light intensity detectors, wherein the illumination intensity corresponds to the laser beam projected on the display screen;
according to the illumination intensity detected by each light intensity detector, calculating to obtain the predicted distance between a light beam projection point of the laser beam projected on the display screen and each light intensity detector;
and determining the position of the light beam projection point on the display screen according to each predicted distance, and generating a position mark at the position.
Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, a predicted distance between a light beam projection point of the laser beam projected on the display screen and each of the light intensity detectors includes:
according to the illumination intensity detected by each light intensity detector, the angular frequency omega and the optical phase of the light beam detected by each light intensity detector are obtained
According to each of the angular frequencies ω and the corresponding optical phaseAnd a first distance formulaCalculating and obtaining a predicted distance D between the light beam projection point and each light intensity detector; wherein c is the speed of light; and n is the atmospheric refractive index.
Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, a predicted distance between a light beam projection point of the laser beam projected on the display screen and each of the light intensity detectors includes:
according to the illumination intensity I detected by each light intensity detector and a second distance formulaCalculating and obtaining a predicted distance d between the light beam projection point and each light intensity detector; wherein t is the atmospheric transmittance; h is the irradiance of the laser beam.
Further, the determining, according to each of the predicted distances, a position of the light beam projection point on the display screen, and generating a position mark at the position specifically includes:
determining the position of the light beam projection point on the display screen according to each predicted distance;
obtaining a hue of a first color at the location in the display screen;
judging whether the difference between the hue of the default color of the position mark to be generated at the position and the hue of the first color is larger than a preset threshold value or not;
if so, generating a position mark on the position by the default color;
and if not, generating a position mark on the position by using a preset second color different from the default color.
Further, the laser beam is an infrared laser beam; the light intensity detectors are arranged on different corners of the display screen.
Correspondingly, the invention also provides a position marking device for the light beam projection point, which specifically comprises:
the illumination intensity acquisition module is used for receiving the illumination intensities which are respectively detected by at least three light intensity detectors positioned at different positions of the display screen and correspond to the laser beams projected on the display screen;
the predicted distance obtaining module is used for calculating and obtaining the predicted distance between a light beam projection point of the laser beam projected on the display screen and each light intensity detector according to the illumination intensity detected by each light intensity detector; and the number of the first and second groups,
and the position mark generating module is used for determining the position of the light beam projection point on the display screen according to each predicted distance and generating a position mark at the position.
Further, the predicted distance obtaining module specifically includes:
a parameter obtaining unit for obtaining the angular frequency omega and the optical phase of the light beam detected by each light intensity detector according to the illumination intensity detected by each light intensity detectorAnd the number of the first and second groups,
a first distance obtaining unit for obtaining a first distance between each of the angular frequencies ω and the corresponding optical phaseAnd a first distance formulaCalculating and obtaining a predicted distance D between the light beam projection point and each light intensity detector; wherein c is the speed of light; and n is the atmospheric refractive index.
Further, the predicted distance obtaining module specifically includes:
a second distance obtaining unit for obtaining the illumination intensity I detected by each light intensity detector and a second distance formulaCalculating and obtaining a predicted distance d between the light beam projection point and each light intensity detector; wherein t is the atmospheric transmittance; h is the irradiance of the laser beam.
Further, the position mark generating module specifically includes:
the position determining unit is used for determining the position of the light beam projection point on the display screen according to each predicted distance;
a position color obtaining unit for obtaining a hue of a first color at the position in the display screen;
a hue difference determination unit configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
a first position mark generation unit configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is larger than the threshold value; or,
and the second position mark generating unit is used for generating a position mark on the position by a preset second color different from the default color when the difference between the hue of the default color and the hue of the first color is not larger than the threshold value.
Further, the laser beam is an infrared laser beam; the light intensity detectors are arranged on different corners of the display screen.
The implementation of the invention has the following beneficial effects:
according to the position marking method and device for the light beam projection point, the position of the light beam projection point on the display screen is obtained through calculation according to the illumination intensity detected by the light intensity detector, and the corresponding position mark is generated at the position, so that the projection point projected to the display screen by the laser beam can be displayed in the display screen, a user can clearly see the position pointed by the laser beam, and user experience is improved.
Drawings
FIG. 1 is a schematic flow chart diagram illustrating one embodiment of a method for marking a position of a light beam projection point provided by the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the position marking apparatus for a light beam projection point provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, it is a schematic flowchart of an embodiment of a method for marking a position of a light beam projection point provided by the present invention, including steps S11 to S13, as follows:
s11: receiving the illumination intensity of at least three light intensity detectors positioned at different positions of a display screen and respectively detected by the at least three light intensity detectors, wherein the illumination intensity corresponds to the laser beam projected on the display screen;
s12: according to the illumination intensity detected by each light intensity detector, calculating to obtain the predicted distance between a light beam projection point of the laser beam projected on the display screen and each light intensity detector;
s13: and determining the position of the light beam projection point on the display screen according to each predicted distance, and generating a position mark at the position.
It should be noted that the method for marking the position of the light beam projection point provided by the present embodiment is executed by a system of the apparatus. Wherein the device has a display screen. When a user projects a laser beam onto a display screen to indicate content in the display screen, the system obtains the illumination intensity of a light beam projected by a light beam projection point on the display screen onto a light intensity detector through the light intensity detector arranged on the display screen, and generates a corresponding mark on the position after determining the position of the light beam projection point on the display screen according to the illumination intensity detected by each light intensity detector, so that the position of the light beam projection point is displayed in the display screen.
In a preferred embodiment, when the user projects the laser beam onto the display screen, the preset light intensity detector detects the illumination intensity of the light beam projected onto the light intensity detector by the light beam projection point on the display screen, and sends the detected illumination intensity to the system for subsequent processing. Wherein, the quantity of light intensity detector is no less than three, and different light intensity detectors set up on the different positions of display screen. The system then predicts the distance between the point of beam projection and each light intensity detector based on the intensity of illumination detected by each light intensity detector. Taking the distance between the system predicted light beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity sent by the light intensity detector, the system calculates and obtains the predicted distance between the light beam projection point and the light intensity detector according to the illumination intensity. The predicted distance between the beam projection point and each of the other light intensity detectors is calculated in the same manner. And then, the system obtains pixel points, the distances between which and each light intensity detector in the display screen are the predicted distances corresponding to each light intensity detector, according to the predicted distances obtained by calculation, wherein the positions of the pixel points are the positions of the light beam projection points. Finally, the system generates a position mark on the determined position of the light beam projection point, so that the position of the light beam projection point is displayed in the display screen.
For example, assuming that four corners of the display screen are provided with the light intensity detectors A, B, C and D, respectively, when the user projects a laser beam onto the display screen, the light intensity detectors A, B, C and D detect the light intensities a, b, c, and D, respectively. The light intensity detectors A, B, C and D send the respective detected intensities of illumination to the system. After receiving the illumination intensities a, b, C and D, the system calculates and obtains the predicted distance D _ A between the light beam projection point and the light intensity detector A according to the illumination intensity a, and calculates and obtains the predicted distances D _ B, D _ C and D _ D between the light beam projection point and the light intensity detectors B, C and D according to the illumination intensities b, C and D in sequence in the same way. Then, the system finds a pixel point which is at a distance D _ A from the light intensity detector A, at a distance D _ B from the light intensity detector B, at a distance D _ C from the light intensity detector C, and at a distance D _ D from the light intensity detector D in the display screen, and determines the position of the pixel point as the position of the light beam projection point. Finally, the system generates a location marker at the location.
It is further noted that the process of calculating the predicted distance between the beam projection point and each light intensity detector may be performed by an MCU in the device.
The position of the light beam projection point on the display screen is obtained through calculation according to the illumination intensity detected by the light intensity detector, and the corresponding position mark is generated at the position, so that the projection point projected to the display screen by the laser beam can be displayed in the display screen, a user can clearly see the position pointed by the laser beam, and the user experience is improved.
Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, a predicted distance between a light beam projection point of the laser beam projected on the display screen and each of the light intensity detectors includes:
according to the illumination intensity detected by each light intensity detector, the angular frequency omega and the optical phase of the light beam detected by each light intensity detector are obtained
According to each of the angular frequencies ω and the corresponding optical phaseAnd a first distance formulaCalculating and obtaining a predicted distance D between the light beam projection point and each light intensity detector; wherein c is the speed of light; and n is the atmospheric refractive index.
It should be noted that, after receiving the illumination intensities detected by the light intensity detectors, the system predicts the distances between the light beam projection point and the light intensity detectors according to the illumination intensities. Taking the example that the system predicts the distance between the light beam projection point and one of the light intensity detectors, after receiving the illumination intensity detected by the light intensity detector, the system calculates the angular frequency omega and the optical phase of the light beam projected onto the light intensity detector from the light beam projection point according to the illumination intensityThe system will then calculate the angular frequency ω and optical phase of the light obtainedSubstituted into the first distance formulaThereby obtaining a predicted distance D between the beam projection point and the light intensity detector. The predicted distance D between the beam projection point and each of the other light intensity detectors is calculated in the same manner. Wherein c in the first distance formula is the speed of light, n is the refractive index of the atmosphere, and the numerical values are all internationally recognized values which are preset in the system.
Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, a predicted distance between a light beam projection point of the laser beam projected on the display screen and each of the light intensity detectors includes:
according to the illumination intensity I detected by each light intensity detector and a second distance formulaCalculating and obtaining a predicted distance d between the light beam projection point and each light intensity detector; wherein t is the atmospheric transmittance; h is the irradiance of the laser beam.
It should be noted that, after receiving the illumination intensities detected by the light intensity detectors, the system predicts the distances between the light beam projection point and the light intensity detectors according to the illumination intensities. Taking the example that the system predicts the distance between the light beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity I detected by the light intensity detector, the system substitutes the illumination intensity I into the second distance formulaIn (1),thereby calculating and obtaining the predicted distance d between the beam projection point and the light intensity detector. The predicted distance d between the beam projection point and each of the other light intensity detectors is calculated in the same manner. Wherein t in the second distance formula is the atmospheric transmittance, and H is the irradiance of the laser beam projected by the user, and the values thereof are all set in the system in advance and are all internationally recognized values.
In another preferred embodiment, the determining, according to each of the predicted distances, a position of the light beam projection point on the display screen, and generating a position mark at the position specifically include:
determining the position of the light beam projection point on the display screen according to each predicted distance;
obtaining a hue of a first color at the location in the display screen;
judging whether the difference between the hue of the default color of the position mark to be generated at the position and the hue of the first color is larger than a preset threshold value or not;
if so, generating a position mark on the position by the default color;
and if not, generating a position mark on the position by using a preset second color different from the default color.
It should be noted that, after determining the position of the light beam projection point in the display screen, the system generates a position mark at the position. The system firstly adopts tools such as a color picker or the like or obtains the hue of the color of the pixel point at the position where the light beam projection point is located in the display screen through modes such as pixel identification and the like, namely the hue of the first color. Subsequently, the hue of the default color of the position mark to be generated at the position is obtained. The hue of the default color is preset by a user or administrator and stored in the system. The system compares the obtained hue of the default color with the obtained hue of the first color, and if the difference value between the hue of the default color and the hue of the first color is larger than a preset threshold value, the color of the position mark to be generated is considered to be strongly compared with the background color, so that the position mark with the color as the default color is generated at the position of the light beam projection point; if the difference between the hue of the default color and the hue of the first color is not greater than the preset threshold, it is considered that the color of the position mark to be generated is weak in contrast with the background color, and therefore the position mark of which the color is the preset second color is generated at the position of the light beam projection point. Wherein the second color has a strong color difference from the default color (e.g., the second color is green when the default color is red).
It should be further noted that, while the position mark is generated at the position where the light beam projects, corresponding position information (e.g., coordinate information, chromaticity information, etc.) may also be generated and displayed.
The position mark having strong color difference with the background color is generated at the position of the light beam projection point in the display screen, so that the position of the projection point projected to the screen by the laser beam can be displayed more clearly, and the user experience is further improved.
Further, the laser beam is an infrared laser beam; the light intensity detectors are arranged on different corners of the display screen.
It should be noted that the laser beam projected by the user is usually an infrared laser beam, but in some application scenarios, the laser beam may also be a green laser beam, a blue laser beam, and so on. Each light intensity detector is disposed at a different corner of the display.
According to the position marking method for the light beam projection point, the position of the light beam projection point on the display screen is obtained through calculation according to the illumination intensity detected by the light intensity detector, and the corresponding position mark is generated at the position, so that the projection point projected to the display screen by the laser beam can be displayed in the display screen, a user can clearly see the position pointed by the laser beam, and user experience is improved. In addition, the position mark with strong color difference with the background color is generated at the position of the light beam projection point in the display screen, so that the position of the projection point projected to the screen by the laser beam can be displayed more clearly, and the user experience is further improved.
Correspondingly, the invention also provides a position marking device of the light beam projection point, which can realize all the processes of the position marking method of the light beam projection point in the embodiment.
Fig. 2 is a schematic structural diagram of an embodiment of the position marking apparatus for a light beam projection point provided by the present invention, which is specifically as follows:
an illumination intensity obtaining module 21, configured to receive illumination intensities, which are respectively detected by at least three light intensity detectors located at different positions of a display screen and correspond to laser beams projected on the display screen;
a predicted distance obtaining module 22, configured to calculate, according to the illumination intensity detected by each light intensity detector, a predicted distance between a light beam projection point of the laser beam projected on the display screen and each light intensity detector; and the number of the first and second groups,
and a position mark generating module 23, configured to determine, according to each of the predicted distances, a position of the light beam projection point on the display screen, and generate a position mark at the position.
Further, the predicted distance obtaining module 22 specifically includes:
a parameter obtaining unit for obtaining the angular frequency omega and the optical phase of the light beam detected by each light intensity detector according to the illumination intensity detected by each light intensity detectorAnd the number of the first and second groups,
a first distance obtaining unit for obtaining a first distance between each of the angular frequencies ω and the corresponding optical phaseAnd a first distance formulaCalculating and obtaining a predicted distance D between the light beam projection point and each light intensity detector; wherein c is the speed of light; and n is the atmospheric refractive index.
Further, the predicted distance obtaining module 22 specifically includes:
a second distance obtaining unit for obtaining the illumination intensity I detected by each light intensity detector and a second distance formulaCalculating and obtaining a predicted distance d between the light beam projection point and each light intensity detector; wherein t is the atmospheric transmittance; h is the irradiance of the laser beam.
In another preferred embodiment, the position mark generating module 23 specifically includes:
the position determining unit is used for determining the position of the light beam projection point on the display screen according to each predicted distance;
a position color obtaining unit for obtaining a hue of a first color at the position in the display screen;
a hue difference determination unit configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
a first position mark generation unit configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is larger than the threshold value; or,
and the second position mark generating unit is used for generating a position mark on the position by a preset second color different from the default color when the difference between the hue of the default color and the hue of the first color is not larger than the threshold value.
Further, the laser beam is an infrared laser beam; the light intensity detectors are arranged on different corners of the display screen.
According to the position marking device for the light beam projection point, provided by the embodiment of the invention, the position of the light beam projection point on the display screen is obtained through calculation according to the illumination intensity detected by the light intensity detector, and the corresponding position mark is generated at the position, so that the projection point projected to the display screen by the laser beam can be displayed in the display screen, a user can clearly see the position pointed by the laser beam, and the user experience is improved. In addition, the position mark with strong color difference with the background color is generated at the position of the light beam projection point in the display screen, so that the position of the projection point projected to the screen by the laser beam can be displayed more clearly, and the user experience is further improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for marking a position of a light beam projection point, comprising:
receiving the illumination intensity of at least three light intensity detectors positioned at different positions of a display screen and respectively detected by the at least three light intensity detectors, wherein the illumination intensity corresponds to the laser beam projected on the display screen;
according to the illumination intensity detected by each light intensity detector, calculating to obtain the predicted distance between a light beam projection point of the laser beam projected on the display screen and each light intensity detector;
and determining the position of the light beam projection point on the display screen according to each predicted distance, and generating a position mark at the position.
2. The method for marking the position of the light beam projection point as claimed in claim 1, wherein the step of calculating the predicted distance between the light beam projection point projected by the laser beam on the display screen and each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors comprises:
according to the illumination intensity detected by each light intensity detector, the angular frequency omega and the optical phase of the light beam detected by each light intensity detector are obtained
According to each of the angular frequencies ω and the corresponding optical phaseAnd a first distance formulaCalculating and obtaining a predicted distance D between the light beam projection point and each light intensity detector; wherein c is the speed of light; and n is the atmospheric refractive index.
3. The method for marking the position of the light beam projection point as claimed in claim 1, wherein the step of calculating the predicted distance between the light beam projection point projected by the laser beam on the display screen and each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors comprises:
according to the illumination intensity I detected by each light intensity detector and a second distance formulaCalculating to obtain the projection point of the light beamA predicted distance d for each of said light intensity detectors; wherein t is the atmospheric transmittance; h is the irradiance of the laser beam.
4. The method for marking the position of the light beam projection point as claimed in claim 1, wherein the determining the position of the light beam projection point on the display screen and generating the position mark on the position according to the predicted distance comprises:
determining the position of the light beam projection point on the display screen according to each predicted distance;
obtaining a hue of a first color at the location in the display screen;
judging whether the difference between the hue of the default color of the position mark to be generated at the position and the hue of the first color is larger than a preset threshold value or not;
if so, generating a position mark on the position by the default color;
and if not, generating a position mark on the position by using a preset second color different from the default color.
5. The method for position-marking a light beam projection point as claimed in any one of claims 1 to 4, wherein the laser beam is an infrared laser beam; the light intensity detectors are arranged on different corners of the display screen.
6. A position marking apparatus for a light beam projection point, comprising:
the illumination intensity acquisition module is used for receiving the illumination intensities which are respectively detected by at least three light intensity detectors positioned at different positions of the display screen and correspond to the laser beams projected on the display screen;
the predicted distance obtaining module is used for calculating and obtaining the predicted distance between a light beam projection point of the laser beam projected on the display screen and each light intensity detector according to the illumination intensity detected by each light intensity detector; and the number of the first and second groups,
and the position mark generating module is used for determining the position of the light beam projection point on the display screen according to each predicted distance and generating a position mark at the position.
7. The apparatus for marking a position of a light beam projection point as claimed in claim 6, wherein the predicted distance obtaining module comprises:
a parameter obtaining unit for obtaining the angular frequency omega and the optical phase of the light beam detected by each light intensity detector according to the illumination intensity detected by each light intensity detectorAnd the number of the first and second groups,
a first distance obtaining unit for obtaining a first distance between each of the angular frequencies ω and the corresponding optical phaseAnd a first distance formulaCalculating and obtaining a predicted distance D between the light beam projection point and each light intensity detector; wherein c is the speed of light; and n is the atmospheric refractive index.
8. The apparatus for marking a position of a light beam projection point as claimed in claim 6, wherein the predicted distance obtaining module comprises:
a second distance obtaining unit for obtaining the illumination intensity I detected by each light intensity detector and a second distance formulaCalculating and obtaining a predicted distance d between the light beam projection point and each light intensity detector; wherein t is the atmospheric transmittance; h is the irradiance of the laser beam.
9. The apparatus for marking a position of a light beam projection point as claimed in claim 6, wherein the position mark generating module comprises:
the position determining unit is used for determining the position of the light beam projection point on the display screen according to each predicted distance;
a position color obtaining unit for obtaining a hue of a first color at the position in the display screen;
a hue difference determination unit configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
a first position mark generation unit configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is larger than the threshold value; or,
and the second position mark generating unit is used for generating a position mark on the position by a preset second color different from the default color when the difference between the hue of the default color and the hue of the first color is not larger than the threshold value.
10. The apparatus for marking a position of a light beam projection point as claimed in any one of claims 6 to 9, wherein the laser beam is an infrared laser beam; the light intensity detectors are arranged on different corners of the display screen.
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| CN201611046883.5A CN106524913B (en) | 2016-11-23 | 2016-11-23 | The position mark method and device in light beam incident point |
| PCT/CN2017/105026 WO2018095147A1 (en) | 2016-11-23 | 2017-09-30 | Method and device for labeling location of light point |
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| CN201611046883.5A CN106524913B (en) | 2016-11-23 | 2016-11-23 | The position mark method and device in light beam incident point |
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| CN106524913B (en) * | 2016-11-23 | 2018-12-18 | 苏州视源电子技术有限公司 | The position mark method and device in light beam incident point |
| CN107976154B (en) * | 2017-11-16 | 2020-03-13 | 北京工业大学 | Method for measuring upper/lower wall surface profile of channel based on fluorescence intensity |
| CN109102736B (en) * | 2018-08-30 | 2021-08-24 | 歌尔光学科技有限公司 | Laser pen color switching method, device and equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000520A (en) * | 2006-01-13 | 2007-07-18 | 乐金电子（沈阳）有限公司 | Computer demonstration system |
| CN101529978A (en) * | 2006-10-12 | 2009-09-09 | 皇家飞利浦电子股份有限公司 | System and method for light control |
| CN103179728A (en) * | 2011-12-22 | 2013-06-26 | 深圳富泰宏精密工业有限公司 | System and method for controlling laser lamps for browsing slides |
| CN103278094A (en) * | 2013-06-25 | 2013-09-04 | 东莞理工学院 | Laser position measuring device and laser position measuring method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4374471B2 (en) * | 2003-08-04 | 2009-12-02 | 学校法人同志社 | Lighting control system and control system |
| CN106524913B (en) * | 2016-11-23 | 2018-12-18 | 苏州视源电子技术有限公司 | The position mark method and device in light beam incident point |
-
2016
- 2016-11-23 CN CN201611046883.5A patent/CN106524913B/en active Active
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000520A (en) * | 2006-01-13 | 2007-07-18 | 乐金电子（沈阳）有限公司 | Computer demonstration system |
| CN101529978A (en) * | 2006-10-12 | 2009-09-09 | 皇家飞利浦电子股份有限公司 | System and method for light control |
| CN103179728A (en) * | 2011-12-22 | 2013-06-26 | 深圳富泰宏精密工业有限公司 | System and method for controlling laser lamps for browsing slides |
| CN103278094A (en) * | 2013-06-25 | 2013-09-04 | 东莞理工学院 | Laser position measuring device and laser position measuring method |
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| CN106524913A (en) | 2017-03-22 |
| WO2018095147A1 (en) | 2018-05-31 |
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