CN111064940A - Laser projection television - Google Patents
Laser projection television Download PDFInfo
- Publication number
- CN111064940A CN111064940A CN201911326514.5A CN201911326514A CN111064940A CN 111064940 A CN111064940 A CN 111064940A CN 201911326514 A CN201911326514 A CN 201911326514A CN 111064940 A CN111064940 A CN 111064940A
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- laser
- reference point
- television
- laser lamp
- 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
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 the first plane in a relationship of being vertical to the projection screen, and a light spot formed by laser emitted by the first laser lamp is marked as a first reference point; the second laser lamp and the third laser lamp are arranged on a second plane, the second laser lamp and the third laser lamp are respectively arranged on two sides of the first laser lamp at a set angle relative to the first laser lamp, 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 the three laser lamps when the position of the laser television changes relative to the second position, when three light spots formed by laser emitted by the three laser lamps coincide with three reference points respectively, the laser television is reset at the second position, and the technical problems that the adjustment difficulty is large and tedious 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
The laser television is an ultra-short-focus product and can project 75-100 inches of pictures. After a user purchases a laser projection television, a professional can mount the projection screen 1 on the door, as shown in fig. 1, and adjust the position of the laser television 2, so that the edge of the projection picture of the laser television 2 is matched with the projection screen 1, that is, after 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: for cleaning and the like, the placement position of the laser television is changed; under the condition that the screen is fixed, the coincidence between the picture of the laser television and the screen is determined by the position of the laser television, and the projection position is changed due to the change of the position of the laser television, so that the problem that the picture is not coincident with the screen is caused.
Therefore, when the position of the laser television is changed, the user needs to adjust the laser television to return to the optimal placement position to readjust the relative relationship between the edge of the picture and the screen, so as to ensure that the picture is consistent with the screen. However, for an ordinary user unfamiliar with the projection device, the self-adjustment usually has a condition that the adjusted laser picture does not present a perfect rectangle, and has the problems of high adjustment difficulty and complex adjustment process.
Disclosure of Invention
The invention aims to provide a laser projection television, which solves the technical problems of high difficulty and complexity in adjustment after the existing laser television is moved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a laser projection television is proposed, comprising: the projection screen is fixed at a first position; the laser television is placed at the second position, and a projected picture of the laser television is matched with the projection screen; the laser television comprises: a first plane and a second plane set in parallel to each other; a first laser light disposed on the first plane in a perpendicular relationship to the projection screen; a light spot formed by the laser emitted by the 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 first laser lamp and the second laser lamp are respectively arranged at two sides of the first laser lamp and are arranged opposite to the first laser lamp at a set angle; light spots formed by the laser emitted by the two on the side of the projection screen are respectively marked as a second reference point and a third reference point; and 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 when three light spots formed by the laser emitted by the first laser lamp, the second laser lamp and the third laser lamp at the side of the projection screen coincide with the first reference point, the second reference point and the third reference point respectively, the laser television is reset at the second position.
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 the laser projection television, after-sales personnel can fix the projection screen at a first position by adopting 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 cleaning or collision and the like, the positioning module can be started, so that the light rays emitted by the first laser lamp, the second laser lamp and the third laser lamp form three light spots on the side of the projection screen, a user can reset the laser television to the second position by adjusting the position of the laser television and enabling the three light spots to coincide 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 reposition the laser television 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 that the adjustment difficulty is large and complicated after the existing laser television is moved are solved.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a conventional 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 laser projection television positioning system according to the present invention;
fig. 4 is a functional structure diagram of a laser television according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of the laser TV position change state according to the present invention;
FIG. 6 is a schematic view of a positioning demonstration of a laser projection television according to the present invention;
FIG. 7 is a schematic view of 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 embodiments of the present invention in further detail with reference to the accompanying drawings.
The laser projection television set proposed by the present invention, as shown in fig. 2, includes: a projection screen 1 and a laser television 2; the projection screen 1 is fixed on a first position A; the laser television 2 is placed at the second position B, so that the projected picture is matched with the projection screen 1, the step is operated by professional after-sale technicians, namely 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 arranged on the first plane a, and is arranged on the first plane a in a perpendicular relationship with the projection screen 1; the second plane b is provided with a second laser light 32 and a third laser light 33, which are respectively arranged on both sides of the first laser light 31 when viewed from the top, and are both arranged relative to the first laser light 31 at a set angle θ.
Referring to fig. 2 and 3, after the laser television 2 is set at the optimal placement position B, the first laser light 31, the second laser light 32, and the third laser light 33 are turned on, and three light spots 41, 42, and 43 are formed on the side (shown as the bottom side) of the projection screen 1, and are marked as a first reference point 41, a second reference point 42, and a third reference point 43, and the marking mode may be implemented by using a pen to mark or sticking a label, 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 provided by the present invention, as shown in fig. 4, the laser television set 2 includes a positioning module 21, which is used for turning on the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33 when the position of the laser television set 2 changes relative to the second position B, and when three light spots formed by the laser emitted by the three laser lamps on the side of the projection screen coincide with the first reference point 41, the second reference point 42 and the third reference point 43, respectively, the laser television set 2 is reset to the second position B.
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 cleaning, collision or other reasons, the picture projected by the laser television 2 cannot be matched with the projection screen 1, so that the viewing experience of the user is affected, at this time, the user may start the positioning module 21, the starting mode may be a key or a remote control instruction of a remote controller, an intelligent terminal, or the like, which is not specifically limited in this embodiment; the activated positioning module 21 automatically turns on the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33, the laser emitted by the three lamps forms three light spots 51, 52 and 53 on the bottom side of the projection screen 1, 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, the user can adjust the placing position of the laser television 2, so that the light spots 51, 52 and 53 are respectively superposed with the first reference point 41, the second reference point 42 and the third reference point 43, that is, the laser television 2 is returned from the position C to the optimal placement position B, the projection picture is ensured to be matched with the projection screen 1, so that a user can reposition the laser television 2 after the position of the laser television 2 is changed without adopting professional means, the projection picture is matched with the projection screen 1, and the technical problem that the existing laser television is large in adjustment difficulty and complex after moving is solved.
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, that is, the length of the lower side of the trapezoid and the angles of the two sides 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, after the length is determined, the distance h between the laser television 2 and the connecting line between the second reference point 42 and the third reference point 43 is constant, when the left, right, front and rear positions of the laser television 2 are changed, the distance h is changed, and when the adjusted light spots coincide with the reference points, the distance h is also restored.
As shown in fig. 7, the track of all possible positions of the laser television 2 in the vertical direction is a semicircle, when the laser television 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 dotted line L, and when the position of the first reference point 41 is determined, the position of the laser television 2 rotating around the axis is determined.
In summary, it can be seen that the optimal placement position of the laser television 2 can be found only by marking the first reference point 41, the second reference point 42 and the third reference point 43.
The following describes in detail how to reposition the laser television after the position of the laser television is changed in the laser projection television according to the present invention with several embodiments,
example one
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 relocation prompt signal when the placement position changes relative to the second position B; the position detection module 22 is a device capable of detecting whether the state of the laser television 2 changes, such as an acceleration sensor and a gyroscope.
Or, the laser television comprises an goodness of fit detection module 23, which is used for detecting the goodness of fit between the picture projected by the laser television 2 and the projection screen 1, and generating a repositioning reminding signal when the goodness of fit exceeds a threshold value; the matching degree detection module 23, for example, an image pickup device, determines the matching degree by capturing a projection image on the projection screen 1 and analyzing the relationship between the projection image and the projection screen through image processing.
Or, the laser television includes a positioning detection module 24, configured to start the first laser lamp 31, the second laser lamp 32, and the third laser lamp 33 according to a set frequency, and generate a repositioning reminding signal when a light spot formed by laser light emitted by the three on the side of the projection screen 1 does not coincide with the first reference point 41, the second reference point 42, and the third reference point 43, respectively.
In combination with the above, the laser television in the embodiment of the present invention further includes a prompt module 25, configured to send a relocation prompt message when the relocation prompt signal is detected. The repositioning alert signal is implemented by sound, light or projection display, and the present invention is not limited in particular.
Example two
As shown in fig. 8, the positioning detection module 24 includes an image pickup unit 241 and a positioning detection unit 242; the camera unit 241 acquires images of light spots formed by the first laser lamp 31, the second laser lamp 32 and the third laser lamp 33 on the side of the projection screen 1; the positioning detection unit 242 determines the coincidence relationship 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 prompt signal when the light spot and the reference point do not coincide.
EXAMPLE III
In the present embodiment, the first reference point 41, the second reference point 42, and the third reference point 43 are marked with a reflective material; as shown in fig. 9, the positioning detection module includes a reflection receiving unit 243 and a reflection detection unit 244, the reflection receiving unit 243 is used for receiving the reflected light rays of the laser light emitted by the first laser lamp, 31, the second laser lamp 2 and the third laser lamp 33 reflected by the first reference point 41, the second reference point 42 and the third reference point 43; the reflection detection unit 244 is configured to determine, based on the reflected light received by the reflection receiving unit 243, coincidence relationships between light spots formed by the laser beams emitted by the first laser lamp 31, the second laser lamp 32, and the third laser lamp 33 at the side of the projection screen and the first reference point 41, the second reference point 42, and the third reference point 43, respectively, and generate a relocation prompting signal when the light spots do not coincide with the reference points.
Example four
In this embodiment, the first plane a and the second plane B and the three laser lamps 31, 32, and 33 are packaged in an independent module, and in the step of marking the first reference point 41, the second reference point 42, and the third reference point 43, the independent module may be installed or attached to the laser television according to the indication mark marked on the laser television, and the reference point mark may be detached and stored after the completion, but after the position of the laser television is changed from the second position B, the user may take out the independent module to reinstall or attach to the laser television according to the indication mark, and perform the relocation again according to the above embodiment.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. A laser projection television comprising:
the projection screen is fixed at a first position;
the laser television is placed at the second position, and a projected picture of the laser television is matched with the projection screen;
characterized in that, the laser TV includes:
a first plane and a second plane set in parallel to each other;
a first laser light disposed on the first plane in a perpendicular relationship to the projection screen; a light spot formed by the laser emitted by the 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 first laser lamp and the second laser lamp are respectively arranged at two sides of the first laser lamp and are arranged opposite to the first laser lamp at a set angle; light spots formed by the laser emitted by the two on the side of the projection screen are respectively marked as a second reference point and a third reference point;
and 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 when three light spots formed by the laser emitted by the first laser lamp, the second laser lamp and the third laser lamp at the side of the projection screen coincide with the first reference point, the second reference point and the third reference point respectively, the laser television is reset at the second position.
2. The laser projection television of claim 1, further comprising:
and the position detection module is used for detecting the placing position of the laser television and generating a repositioning reminding signal when the placing position of the laser television is changed relative to the second position.
3. The laser projection television of claim 1, further comprising:
and the goodness of fit detection module is used for detecting the goodness of fit of the picture projected by the laser television and the projection screen and generating a repositioning reminding signal when the goodness of fit 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 a set frequency, and generating a repositioning reminding signal when light spots formed by the laser emitted by the first laser lamp, the second laser lamp and the third laser lamp at the side of the projection screen do not coincide with the first reference point, the second reference point and the third reference point respectively.
5. The laser projection television of claim 2, 3 or 4, wherein the laser television further comprises:
and the prompting module is used for sending out the repositioning prompting information when the repositioning prompting signal is detected.
6. The laser projection television of claim 4, wherein the positioning detection module comprises:
the camera shooting unit is used for acquiring images of light spots formed by the first laser lamp, the second laser lamp and the third laser lamp on the side of the projection screen;
and the positioning detection unit is used for judging the coincidence relation of 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 includes:
the reflection receiving unit is used for receiving the reflected light rays of the 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 laser emitted by the first laser lamp, the second laser lamp and the third laser lamp at 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 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911326514.5A CN111064940B (en) | 2019-12-20 | 2019-12-20 | Laser projection television |
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| CN111064940A true CN111064940A (en) | 2020-04-24 |
| CN111064940B CN111064940B (en) | 2023-09-26 |
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| CN201911326514.5A Active CN111064940B (en) | 2019-12-20 | 2019-12-20 | Laser projection television |
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| CN111458964A (en) * | 2020-04-26 | 2020-07-28 | 青岛海信激光显示股份有限公司 | Laser projection equipment |
| CN112975170A (en) * | 2021-03-18 | 2021-06-18 | 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 |
| CN115134567A (en) * | 2022-05-19 | 2022-09-30 | 深圳市康帕斯科技发展有限公司 | Projection picture fusion area correction method, projection picture fusion area correction system, projection system, and medium |
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| CN115134567A (en) * | 2022-05-19 | 2022-09-30 | 深圳市康帕斯科技发展有限公司 | Projection picture fusion area correction method, projection picture fusion area correction system, projection system, and medium |
| 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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| CN111064940B (en) | 2023-09-26 |
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