CN111064940B - Laser projection television - Google Patents
Laser projection television Download PDFInfo
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- CN111064940B CN111064940B CN201911326514.5A CN201911326514A CN111064940B CN 111064940 B CN111064940 B CN 111064940B CN 201911326514 A CN201911326514 A CN 201911326514A CN 111064940 B CN111064940 B CN 111064940B
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- laser
- television
- reference point
- lamp
- laser lamp
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a laser projection television, which comprises a projection screen, a laser television, a first plane, a second plane, a first laser lamp, a second laser lamp, a third laser lamp and a positioning module, wherein the first plane and the second plane are set in parallel; the first laser lamp is arranged on a first plane in a relation perpendicular to the projection screen, and a light spot formed by the emitted laser is marked as a first reference point; the second laser lamp and the third laser lamp are arranged on the second plane, are respectively arranged on two sides of the first laser lamp relative to the first laser lamp by a set angle, and light spots formed by laser emitted by the second laser lamp and the third laser lamp are respectively marked as a second reference point and a third reference point; the positioning module starts three laser lamps when the position of the laser television is changed relative to the second position, and when three light spots formed by the laser emitted by the three light spots are respectively overlapped with three reference points, the laser television is reset to the second position, and the technical problems that the adjustment difficulty is high and complicated after the existing laser television moves are solved.
Description
Technical Field
The invention belongs to the technical field of laser projection, and particularly relates to a laser projection television.
Background
As an ultra-short focal product, the laser television can throw 75-100 inches of pictures. After purchasing the laser projection television, the user may go to the home to install the projection screen 1, as shown in fig. 1, and adjust the position of the laser television 2 so that the projection screen edge of the laser television 2 matches with the projection screen 1, that is, when the projection screen 1 is fixed, the laser television 2 has an optimal placement position matched with the projection screen 1.
The laser television has a disadvantage in placement: the placement position of the laser television can be changed for cleaning and the like; under the condition of fixed screen, the matching of the picture of the laser television and the screen is determined by the position of the laser television, and the position of the laser television is changed, so that the projection position is changed, and the problem of non-matching of the picture and the screen is caused.
Therefore, when the position of the laser television is changed, the user needs to adjust the homing position of the laser television to the optimal placement position so as to readjust the relative relation between the edge of the picture and the screen and ensure that the picture is matched with the screen. However, for an ordinary user unfamiliar with the projection equipment, the self-adjustment generally has the condition that the adjusted laser picture does not show a regular rectangle, and the problems of high adjustment difficulty and complicated adjustment process exist.
Disclosure of Invention
The invention aims to provide a laser projection television, which solves the technical problems of large adjustment difficulty and complexity of the existing laser television after moving.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
a laser projection television is proposed comprising: a projection screen fixed in a first position; when the laser television is placed at the second position, the projected picture of the laser television is matched with the projection screen; the laser television includes: a first plane and a second plane set parallel to each other; a first laser lamp disposed on the first plane in a perpendicular relationship to the projection screen; the light spot formed by the emitted laser on the side of the projection screen is marked as a first reference point; the second laser lamp and the third laser lamp are arranged on the second plane; the two are respectively arranged at two sides of the first laser lamp and are arranged at a set angle relative to the first laser lamp; the light spots formed by the laser emitted by the two light spots on the side of the projection screen are respectively marked as a second reference point and a third reference point; the positioning module is used for starting the first laser lamp, the second laser lamp and the third laser lamp when the position of the laser television is changed relative to the second position, and resetting the laser television at the second position when three light spots formed by laser emitted by the first laser lamp, the second laser lamp and the third laser lamp at the side of the projection screen are respectively overlapped with the first reference point, the second reference point and the third reference point.
Compared with the prior art, the invention has the advantages and positive effects that: the invention provides a laser projection television, which provides a mode that a user can reposition after the position of the laser television is changed so as to ensure that a projection picture is matched with a projection screen; after a user purchases a laser projection television, after-sales personnel can fix the projection screen at a first position by adopting a professional means, set the laser television at a second position to enable a projection picture of the laser television to be matched with the projection screen, then start a first laser lamp, a second laser lamp and a third laser lamp, and mark light spots formed by the three on the side of the projection screen as a first reference point, a second reference point and a third reference point respectively; after the position of the laser television is changed due to sweeping or collision, the positioning module can be started, so that light rays emitted by the first laser lamp, the second laser lamp and the third laser lamp form three light points at the side of the projection screen, the user can reset the laser television to the second position by adjusting the positions of the laser television to enable the three light points to be overlapped with the first reference point, the second reference point and the third reference point respectively, the projection picture is ensured to be matched with the projection screen, the user can position the laser television again after the position of the laser television is changed without adopting professional means, the projection picture is matched with the projection screen, and the technical problems of high adjustment difficulty and complexity after the movement of the existing laser television are solved.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Drawings
FIG. 1 is a schematic illustration of a prior art laser projection television;
FIG. 2 is a system architecture diagram of a laser projection television according to the present invention;
FIG. 3 is a schematic diagram of a positioning structure of a laser projection television according to the present invention;
FIG. 4 is a functional block diagram of a laser television according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of the position change state of the laser television according to the present invention;
FIG. 6 is a schematic diagram showing a positioning demonstration of a laser projection television according to the present invention;
FIG. 7 is a schematic diagram showing a positioning demonstration of a laser projection television according to the present invention;
fig. 8 is a functional block diagram of a laser television according to a second embodiment of the present invention;
fig. 9 is a functional block diagram of a laser television according to a third embodiment of the present invention.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
The laser projection television according to the present invention, as shown in fig. 2, includes: a projection screen 1 and a laser television 2; the projection screen 1 is fixed at a first position A; the laser television 2 is placed at the second position B so that the projected picture coincides with the projection screen 1, which is operated by a professional after-sales technician, i.e. the second position B is the optimal placement position of the laser television 2.
As shown in fig. 3, a first plane a and a second plane b are set inside or outside the laser television 2, and are parallel to each other; a first laser lamp 31 is disposed on the first plane a in a perpendicular relationship to the projection screen 1; the second plane b is provided with a second laser lamp 32 and a third laser lamp 33, which are respectively provided on both sides of the first laser lamp 31 in a plan view, and are each provided at a set angle θ with respect to the first laser lamp 31.
Referring to fig. 2 and 3, after the laser television 2 is set at the optimal placement position B, the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33 are turned on, and three light spots 41, 42 and 43 are formed on the side (illustrated as the bottom side) of the projection screen 1, and the three light spots are marked as a first reference point 41, a second reference point 42 and a third reference point 43, and the marking mode can be implemented by a pen marking mode or a label sticking mode, which is not limited in the present invention; that is, when the laser television 2 is placed at the optimal placement position, the light spots formed by the outgoing light rays of the three laser lamps at the lower end of the projection screen 1 coincide with the first reference point 41, the second reference point 42, and the third reference point 43.
In the laser projection television set forth in the present invention, as shown in fig. 4, the laser television 2 includes a positioning module 21, which is configured to turn on the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33 when the position of the laser television 2 is changed relative to the second position B, and reset the laser television 2 at the second position B when three light spots formed by the laser emitted from the three light spots on the side of the projection screen overlap with the first reference point 41, the second reference point 42 and the third reference point 43, respectively.
Specifically, as shown in fig. 5, after the position of the laser television 2 is changed to the position C relative to the second position B due to sweeping or collision or other reasons, the picture projected by the laser television 2 cannot be matched with the projection screen 1, so as to affect the viewing experience of the user, at this time, the user may start the positioning module 21, and the starting manner may be a key or a remote control instruction of a remote controller, an intelligent terminal, etc., which is not limited in this embodiment; the positioning module 21 after starting automatically starts the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33, and the laser emitted by the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33 forms three light spots 51, 52 and 53 on the bottom side of the projection screen 1, and the three light spots cannot coincide with the first reference point 41, the second reference point 42 and the third reference point 43 due to the change of the position of the laser television 2, so that a user can automatically adjust the placement position of the laser television 2, and the light spots 51, 52 and 53 coincide with the first reference point 41, the second reference point 42 and the third reference point 43 respectively, that is, the purpose of homing the laser television 2 from the position C to the optimal placement position B is achieved, the situation that a projection picture coincides with the projection screen 1 is ensured, the user can reposition the laser television 2 after the position of the laser television 2 is changed without adopting a professional means, the situation that the projection picture coincides with the projection screen 1, and the technical problems of great adjustment difficulty and complexity after the movement of the existing laser television are solved.
In the following, a scheme of homing the laser projection television set provided by the invention is demonstrated, as shown in fig. 6, after the second laser lamp 32 and the third laser lamp 33 are turned on, two light spots 42 and 43 are formed on the bottom side of the projection screen 1, and the second laser lamp 32, the light spot 42, the light spot 43 and the third laser lamp 33 are connected to form a trapezoid as shown in the figure, because the positions of the second laser lamp 32 and the third laser lamp 33 are fixed, i.e. the lengths of the lower side and the angles of the two sides of the trapezoid are fixed, after the second reference point 42 and the third reference point 43 are marked, the length of the upper side of the trapezoid is determined, and after the length is determined, the distance h between the laser television 2 and the connection line of the second reference point 42 and the third reference point 43 is constant, when the left, right, front and back positions of the laser television 2 are changed, the distance h is changed, and when the light spot is adjusted to coincide with the reference point, the distance h is restored.
As shown in fig. 7, the locus of all possible positions of the laser tv 2 in the vertical direction is semicircular, when the laser tv 2 rotates around the axis formed by the second reference point 42 and the third reference point 43, the light spot 41 formed by the first laser lamp 31 moves up and down along the broken line L, and when the position of the first reference point 41 is determined, the position of the rotation of the laser tv 2 around the axis is determined.
In summary, it is only necessary to mark the first reference point 41, the second reference point 42 and the third reference point 43 to find the optimal placement position of the laser television 2.
In the following, a detailed description will be given of a repositioning manner after a laser television position is changed in a laser projection television according to embodiments of the present invention,
example 1
As shown in fig. 4, the laser television set provided by the present invention includes a position detection module 22, configured to detect a placement position of the laser television set 2, and generate a repositioning reminding signal when the placement position is changed relative to a second position B; the position detection module 22 is capable of detecting a setting of whether the state of the laser television 2 has changed, for example, an acceleration sensor, a gyroscope, or the like.
Or, the laser television comprises a coincidence degree detection module 23 for detecting coincidence degree of the picture projected by the laser television 2 and the projection screen 1, and generating a repositioning reminding signal when the coincidence degree exceeds a threshold value; the coincidence detecting module 23, for example, an image pickup apparatus, judges coincidence by photographing a projection screen on the projection screen 1, analyzing the relationship of the projection screen and the projection screen through image processing.
Or, the laser television includes a positioning detection module 24 for starting the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33 according to a set frequency, and generating a repositioning reminding signal when light spots formed by laser emitted by the first laser lamp 31, the second laser lamp 32 and the third laser lamp on the side of the projection screen 1 are not respectively overlapped with the first reference point 41, the second reference point 42 and the third reference point 43.
In combination with the above, the laser television in the embodiment of the present invention further includes a prompt module 25, configured to send out the relocated prompting message when the relocated prompting signal is detected. The repositioning of the alert signal is accomplished in an acoustic, optical or projected display manner, and the invention is not particularly limited.
Example two
As shown in fig. 8, the positioning detection module 24 includes an imaging unit 241 and a positioning detection unit 242; the image capturing unit 241 acquires images of light spots formed by the first, second, and third laser lamps 31, 32, and 33 on the side of the projection screen 1; the positioning detection unit 242 determines the coincidence relation between the light spot and the first reference point 41, the second reference point 42, and the third reference point 43 based on the image of the light spot, and generates a repositioning reminder signal when the light spot does not coincide with the reference points.
Example III
In this embodiment, the first reference point 41, the second reference point 42 and the third reference point 43 are marked with reflective material; as shown in fig. 9, the positioning detection module includes a reflection receiving unit 243 and a reflection detecting unit 244, where the reflection receiving unit 243 is configured to receive reflected light rays of the laser light emitted from the first, second, and third laser lamps 31, 2, and 33 reflected back by the first, second, and third reference points 41, 42, and 43; the reflection detecting unit 244 is configured to determine, based on the reflected light received by the reflection receiving unit 243, a coincidence relation between light points formed by the laser beams emitted from the first, second and third laser lamps 31, 32 and 33 at the side of the projection screen and the first, second and third reference points 41, 42 and 43, respectively, and generate a repositioning reminding signal when the light points do not coincide with the reference points.
Example IV
In this embodiment, the first plane a and the second plane B and the three laser lamps 31, 32, 33 are packaged in a separate module, and in the step of marking the first reference point 41, the second reference point 42, and the third reference point 43, the separate module may be mounted or attached to the laser television according to the indication marks marked on the laser television, and the reference point marks may be stored in a detachable manner after the completion of the marking, but after the position of the laser television is changed relative to the second position B, the user may take out the separate module to remount or attach to the laser television according to the indication marks, and perform the repositioning according to the embodiment described above.
It should be noted that the above description is not intended to limit the invention, but rather the invention is not limited to the above examples, and that variations, modifications, additions or substitutions within the spirit and scope of the invention will be within the scope of the invention.
Claims (8)
1. A laser projection television comprising:
a projection screen fixed in a first position;
when the laser television is placed at the second position, the projected picture of the laser television is matched with the projection screen;
the laser television is characterized by comprising:
a first plane and a second plane set parallel to each other;
a first laser lamp disposed on the first plane in a perpendicular relationship to the projection screen; when the laser television is arranged at the second position, a light spot formed by the emitted laser on the side of the projection screen is marked as a first reference point;
the second laser lamp and the third laser lamp are arranged on the second plane; the two are respectively arranged at two sides of the first laser lamp, and are arranged relative to the first laser lamp at a set angle in the overlook direction; when the laser television is arranged at the second position, light spots formed by the laser emitted by the laser television and the laser on the side of the projection screen are respectively marked as a second reference point and a third reference point;
the positioning module is used for starting the first laser lamp, the second laser lamp and the third laser lamp when the position of the laser television is changed relative to the second position, and resetting the laser television at the second position when three light spots formed by laser emitted by the first laser lamp, the second laser lamp and the third laser lamp on the side of the projection screen are respectively overlapped with the first reference point, the second reference point and the third reference point based on adjustment;
the second reference point and the third reference point are used for limiting the distance between the laser television and the connecting line; the first reference point is used for limiting the position of the laser television around a rotation axis formed by the second reference point and the third reference point.
2. The laser projection television of claim 1, wherein the laser television further comprises:
the position detection module is used for detecting the placement position of the laser television and generating a repositioning reminding signal when the placement position of the laser television is changed relative to the second position.
3. The laser projection television of claim 1, wherein the laser television further comprises:
and the coincidence degree detection module is used for detecting the coincidence degree of the picture projected by the laser television and the projection screen, and generating a repositioning reminding signal when the coincidence degree exceeds a threshold value.
4. The laser projection television of claim 1, wherein the laser television further comprises:
and the positioning detection module is used for starting the first laser lamp, the second laser lamp and the third laser lamp according to the set frequency, and generating a repositioning reminding signal when light spots formed by laser emitted by the first laser lamp, the second laser lamp and the third laser lamp on the side of the projection screen are not respectively overlapped with the first reference point, the second reference point and the third reference point.
5. The laser projection television of claim 2 or 3 or 4, wherein the laser television further comprises:
and the prompt module is used for sending out the relocated prompt information when the relocated prompt signal is detected.
6. The laser projection television of claim 4, wherein the positioning detection module comprises:
an image pickup unit for acquiring images of light spots formed by the first, second and third laser lamps at the side of the projection screen;
and the positioning detection unit is used for judging the coincidence relation between the light spot and the first reference point, the second reference point and the third reference point based on the image of the light spot.
7. The laser projection television of claim 4, wherein the first, second, and third reference points are marked with a reflective material; the positioning detection module comprises:
the reflection receiving unit is used for receiving reflected light rays of laser emitted by the first laser lamp, the second laser lamp and the third laser lamp, which are reflected by the first reference point, the second reference point and the third reference point;
and the reflection detection unit is used for judging the coincidence relation between light spots formed by the lasers emitted by the first laser lamp, the second laser lamp and the third laser lamp on the side of the projection screen and the first reference point, the second reference point and the third reference point respectively based on the reflected light rays received by the reflection receiving unit.
8. The laser projection television of claim 1, wherein the first plane, the second plane, the first laser light, the second laser light, and the third laser light are packaged in a single module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326514.5A CN111064940B (en) | 2019-12-20 | 2019-12-20 | Laser projection television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326514.5A CN111064940B (en) | 2019-12-20 | 2019-12-20 | Laser projection television |
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| Publication Number | Publication Date |
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| CN111064940A CN111064940A (en) | 2020-04-24 |
| CN111064940B true CN111064940B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911326514.5A Active CN111064940B (en) | 2019-12-20 | 2019-12-20 | Laser projection television |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458964B (en) * | 2020-04-26 | 2022-02-08 | 青岛海信激光显示股份有限公司 | Laser projection equipment |
| CN112975170B (en) * | 2021-03-18 | 2023-03-14 | 广东万濠精密仪器股份有限公司 | Method for determining the aperture of a projection system built in an edge finder |
| CN115134567B (en) * | 2022-05-19 | 2023-07-25 | 深圳市康帕斯科技发展有限公司 | Projection picture fusion zone correction method, system, projection system and medium |
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