CN111458964B - Laser projection equipment - Google Patents
Laser projection equipment Download PDFInfo
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- CN111458964B CN111458964B CN202010339405.3A CN202010339405A CN111458964B CN 111458964 B CN111458964 B CN 111458964B CN 202010339405 A CN202010339405 A CN 202010339405A CN 111458964 B CN111458964 B CN 111458964B
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- laser projection
- projection device
- change data
- movement change
- vertical displacement
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- 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
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Abstract
The invention discloses a laser projection device, comprising: the projection screen and the laser projection device, when the laser projection device is placed at the second position, the projected picture is matched with the projection screen; the laser projection device comprises a first optical navigation sensor and a second optical navigation sensor which are arranged at two corners of the bottom surface of the laser projection device in a diagonal position relationship, and the first optical navigation sensor quantifies first light rays emitted by the first optical navigation sensor to be received as first movement change data; the second optical navigation sensor quantifies second light rays received from the second optical navigation sensor into second movement change data; the positioning unit calculates the horizontal displacement and the vertical displacement of the laser projection device based on the first movement change data and the second movement change data; the prompting unit is used for projecting return guide information on the projection screen when the horizontal displacement or the vertical displacement exceeds a preset value; the user can reset the laser projection device by himself based on the guidance of the reset guide information.
Description
Technical Field
The invention belongs to the technical field of laser projection, and particularly relates to laser projection equipment.
Background
After a user purchases the laser projection device, a professional can mount the projection screen 1 on the door, as shown in fig. 1, and adjust the position of the laser projection device 2, so that the edge of the projection picture of the laser projection device 2 is matched with the projection screen 1, that is, after the projection screen 1 is fixed, the laser projection device 2 has an optimal placement position to be matched with the projection screen 1, and the position of the projection device needs to be kept unchanged in the using process.
There is a drawback in laser projection device in putting: because the laser projection device is generally placed on a desktop, the position of the laser projection device can be changed due to collision, and under the condition that a screen is fixed, the coincidence between a laser projection picture and the screen is determined by the position of the laser projection device, and the position of the laser projection device is changed, so that the projection position is changed, and the problem that the picture is not coincided with the screen is caused.
Therefore, when the position of the laser projection device is changed, a user needs to adjust the laser projection device to return to the optimal placement position so as to readjust the relative relationship between the edge of the picture and the screen and ensure that the picture is matched with the screen; however, for an ordinary user who is not familiar with the projection apparatus, the self-adjustment is difficult.
Disclosure of Invention
The invention aims to provide laser projection equipment, which solves the technical problem that the existing laser projection device is difficult to adjust after moving.
In order to solve the technical problems, the invention adopts the following technical scheme:
a laser projection device, comprising: the projection screen is fixed at a first position; the laser projection device is placed at the second position, and a projected picture of the laser projection device is matched with the projection screen; the laser projection apparatus includes: the first optical navigation sensor is arranged at one corner of the bottom surface of the laser projection device; the first light ray used for receiving the self emission is quantized into first movement change data; the second optical navigation sensor is arranged at the other corner of the bottom surface of the laser projection device in a diagonal position relation with the first optical navigation sensor; the second light ray used for receiving the self-emitted light is quantized into second movement change data; a positioning unit for calculating a horizontal displacement amount and a vertical displacement amount of the laser projection device based on the first movement change data and the second movement change data; and the prompting unit is used for projecting return guide information on the projection screen when the horizontal displacement or the vertical displacement exceeds a preset value.
Compared with the prior art, the invention has the advantages and positive effects that: the invention provides laser projection equipment, and provides a mode that a user can reposition after the position of a laser projection device is changed so as to ensure that a projection picture is matched with a projection screen; after a user purchases the laser projection equipment, after-sales personnel can fix the projection screen at the first position by adopting professional means, and the laser projection device is arranged at the second position to enable a projection picture of the laser projection device to be matched with the projection screen; in the later use process, according to first movement change data detected by a first optical navigation sensor and second movement change data detected by a second optical navigation sensor, the horizontal displacement and/or the vertical displacement of the laser projection device are/is calculated, if the laser projection device is collided and one or both of the two are larger than a preset value, the prompting unit projects return guide information to the projection screen, a user can automatically reset the laser projection device based on the guidance of the return guide information, so that a projection picture is restored to be matched with the projection screen, the user can reset the laser projection device again after the position of the laser projection device is changed without adopting a professional means, and the technical problem that the adjustment of the existing laser projection device is difficult after the movement is 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 apparatus;
fig. 2 is a schematic view of the laser projection apparatus according to the present invention when the projection image is matched with the projection screen;
FIG. 3 is a schematic structural diagram of a laser projection apparatus according to an embodiment of the present invention;
FIG. 4 is a system architecture diagram of the embodiment shown in FIG. 3;
fig. 5 is a schematic data diagram of a laser projection apparatus after a laser projection device moves according to an embodiment of the laser projection apparatus provided in the present invention;
FIG. 6 is a schematic of a standard position map and an offset position map generated based on the data of the embodiment shown in FIG. 5;
FIG. 7 is a system architecture diagram of the laser projection device of the embodiment shown in FIG. 6;
FIG. 8 is a diagram of first text information generated based on the data of the embodiment shown in FIG. 5;
FIG. 9 is a system architecture diagram of the laser projection device of the embodiment shown in FIG. 8;
FIG. 10 is a system diagram of a laser projection apparatus according to another embodiment of the present invention;
FIG. 11 is a schematic structural diagram of the laser projection apparatus of the embodiment shown in FIG. 10;
fig. 12 is a system architecture diagram of a laser projection apparatus according to yet another 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 apparatus proposed by the present invention, as shown in fig. 2, includes: a projection screen 1 and a laser projection device 2; the projection screen 1 is fixed on a first position A; the laser projection device 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-sales technicians, namely the second position B is the optimal placement position of the laser projection device 2.
As shown in fig. 3 and 4, the laser projection apparatus proposed by the present invention further includes a first optical navigation sensor 31, a second optical navigation sensor 32, a positioning unit 4 and a prompting unit 5; as shown in FIG. 3, the first optical navigation sensor 31 is mounted at one corner of the bottom surface of the laser projection device 2, and the second optical navigation sensor 32 is mounted at the other corner of the bottom surface of the laser projection device 2 in a diagonal positional relationship with the first optical navigation sensor 31.
The first optical navigation sensor 31 and the second optical navigation sensor 32 each include a light emitting end and a light receiving end, and detect movement change data based on the reception of the emitted light. Specifically, the first optical navigation sensor 31 receives a first light ray emitted by its light emitting end and reflected by the plane, and quantizes the first light ray into a first movement change data representing a position change of the first optical navigation sensor 31; the second optical navigation sensor 32 receives a second light ray emitted by the light emitting end of the second optical navigation sensor and reflected by the plane, and quantifies the second light ray into second movement change data representing the position change of the second optical navigation sensor 32; the first movement change data and the second movement change data reflect the positional changes of the two diagonal corner portions of the laser projection apparatus 2, that is, the positional changes of the entire laser projection apparatus 2.
After the laser projection device 2 is purchased, the professional firstly adjusts the laser projection device to the optimal projection position, namely a second position B; in some embodiments of the present invention, as shown in fig. 4, the laser projection apparatus 2 includes a storage unit 6, a timing unit 11, and a position establishing unit 12; the timing unit 11 performs accumulated timing on the time of the user using the laser projection device; the position establishing unit 12 is configured to consider that the user approves the projection goodness of fit between the laser projection device 2 and the projection screen 1 when the accumulated timing time reaches a preset value, and normally uses the preset value time; at this time, the position establishing unit 12 establishes a coordinate system for the laser projection apparatus 2, based on the established coordinatesDetermining initial position data of a laser projection device; the initial position data is regarded as the position data when the laser projection device 2 is located at the second position B; for example, when the coordinate system is established with a set reference point as the origin, the initial position data of the first optical navigation sensor 31
Initial position data of the second optical navigation sensor 32
. The storage unit 6 stores the initial position data.
When the laser projection device 2 is changed in position due to collision during use, the first optical navigation sensor 31 and the second optical navigation sensor 32 detect the first movement change data and the second movement change data, and the positioning unit 4 calculates the horizontal displacement of the two corners of the laser projection device 2 based on the first movement change data and the second movement change data
、
And the vertical displacement
、
。
Specifically, as shown in fig. 5, after the laser projection device 2 moves, the position coordinate of the first optical navigation sensor 31 can be calculated and obtained according to the first movement change data, the second movement change data and the initial position data
The position coordinates of the second optical navigation sensor 32 are
Is based on
And
calculating the horizontal displacement of the first optical navigation sensor 31 corresponding to the corner position
And the vertical displacement
According to
And
calculating the horizontal displacement of the corresponding corner position of the second optical navigation sensor 32
And the vertical displacement
。
If the horizontal displacement is
、
And the vertical displacement
、
None of which exceeds the preset value a, as shown in fig. 4, the automatic correction unit 7 of the laser projection apparatus is based on the amount of horizontal displacement
、
And the vertical displacement
、
And adjusting the projection image to realize the coincidence of the projection picture and the projection screen. Specific automatic correction manners, such as performing adjustment of the projection relationship, performing mechanical adjustment performed by moving or rotating the structure, and the like, are not limited in the embodiments of the present invention.
When the horizontal displacement Δ x or the vertical displacement Δ y exceeds a predetermined value a, i.e., Δ x > a, or Δ y > a, the prompting unit 5 projects the return guidance information on the projection screen 1.
In some embodiments of the present invention, the positioning unit 4 includes an integrating module 41, as shown in fig. 6, configured to integrate the first movement variation data and the second movement variation data to obtain the horizontal displacement and the vertical displacement, respectively; in the present embodiment, the laser projection apparatus 2 may be moved slightly, which is insufficient to perform manual correction, such as the amount of horizontal displacement
、
And the vertical displacement
、
If the sum of the motion data and the accumulated amount exceeds the preset value a, the accumulation module 41 stores and accumulates the generated motion change data, and when the accumulated amount exceeds the preset value a, a prompt sheet is usedThe element 5 projects return guide information on the projection screen 1.
Since the positional relationship of the first optical navigation sensor 31 and the second optical navigation sensor 32 diagonally mounted does not change, the amount of horizontal displacement according to the two does not change
、
And the vertical displacement
、
The amount of displacement and the rotation angle at which the entire laser projector 2 moves can be estimated.
In some embodiments of the present invention, as shown in fig. 6 and 7, the prompting unit 5 includes a first homing information generating module 51 for generating a standard position map S and an offset position map P; the standard position map S is generated by placing the laser projection device 2 at the second position B, that is, the position of the laser projection device 2 at the second position B is used as a standard position, and a standard position map S representing the standard position is generated in a coordinate system; the deviation map is based on the amount of horizontal displacement from the standard map S
、
And the vertical displacement
、
Generating, i.e. based on the standard position map S, the amount of horizontal displacement of the two optical navigation sensors
、
And the vertical displacement
、
By calculating the displacement amount and the rotation amount of the entire laser projector 2, the horizontal displacement and the vertical displacement for each detection point can be generated, and the deviation position map P can be constructed.
The presentation unit 5 projects the generated standard position map S and offset position map P onto the projection screen 1, and allows the user to know the movement of the laser projection apparatus 2, and to specify the movement direction, movement amount, rotation direction, and the like of the laser projection apparatus 2 based on the positional relationship between the projected offset position map P and the standard position map S.
In some embodiments of the present invention, as shown in fig. 7, the first homing guiding information generating module 51 includes a first updating sub-module 511, configured to, during a period in which a user adjusts the position of the laser projection apparatus 2 according to the position relationship between the standard position map S and the offset position map P displayed by projection, that is, during a moving and resetting process of the laser projection apparatus 2, the positioning unit 5 calculates a real-time horizontal displacement amount, a real-time vertical displacement amount, and a real-time rotation angle according to the real-time first moving change data and the real-time second moving change data, and updates the offset position map P according to the real-time calculated horizontal displacement amount, the real-time vertical displacement amount, and the real-time rotation angle, so that the user can clearly grasp an adjustment condition, and avoid an insufficient adjustment, an excessive adjustment, or an error in an adjustment direction.
In some embodiments of the present invention, as shown in fig. 8 and 9, the prompting unit 5 includes a second return guiding information generating module 52, configured to generate first text information representing a current offset condition based on the horizontal displacement amount, the vertical displacement amount, and/or the rotation angle, for example: "shift to the left/right
"," is offset up/down
"," the right (left) is offset up (down) by XX ", etc.
The presentation unit 5 projects the generated first character information onto the projection screen 1, so that the user can know the movement condition of the laser projection apparatus, and can determine the movement direction, the movement amount, and the rotation direction of the laser projection apparatus 2 based on the first character information displayed by projection.
In some embodiments of the present invention, as shown in fig. 9, the second return guiding information generating module 52 includes a second updating sub-module 521, configured to calculate a real-time horizontal displacement amount, a real-time vertical displacement amount, and a real-time rotation angle according to the real-time first movement change data and the real-time second movement change data during a period in which a user adjusts the position of the laser projection apparatus 2 according to the first text information displayed by projection, that is, during a movement resetting process of the laser projection apparatus 2, and update the first text information according to the real-time calculated horizontal displacement amount, vertical displacement amount, and rotation angle, so that the user can clearly grasp an adjustment condition, and avoid insufficient adjustment, excessive adjustment, or an error in an adjustment direction.
In some embodiments of the invention, the updated first textual information is, for example: the moved horizontal displacement and vertical displacement, the rotated angle, etc.; through the updating of the first character information, the user can know the adjusting state, unnecessary conditions such as over-adjustment and error adjustment are avoided, and faster and more accurate adjusting is promoted.
In some embodiments of the present invention, as shown in fig. 10, the laser projection apparatus further includes a lift trigger button 8 and a clear unit 9, as shown in fig. 11, the laser projection apparatus further includes a first lift trigger button 81 and a second lift trigger button 82, which are respectively mounted at the bottom of the laser projection device 2 adjacent to the first optical navigation sensor 31 and the second optical navigation sensor 32, and are pressed to generate a second trigger signal when the laser projection device 2 is placed on the plane of the second position B, and are released to generate a first trigger signal when the laser projection device 2 is moved by a person to leave the plane of the second position B; when receiving the first trigger signal, the clear unit 9 clears the first movement change data and the second movement change data stored in the storage unit 6, that is, stops the operations of the positioning unit 4 and the prompting unit 5, and avoids the occurrence of inaccurate adjustment caused by false triggering and inaccurate displacement data.
In some embodiments of the present invention, the first lift trigger button 81 and the second lift trigger button 82 are configured to activate the clear unit 9 when both generate the first trigger signal; the zero clearing unit 9 is not activated when only one of the lift buttons generates the first trigger signal.
In some embodiments of the present invention, as shown in fig. 12, the laser projection apparatus further includes a second prompting unit 10, configured to prompt, by way of display, sound, or the like, a manual calibration when the trigger button is lifted to generate the first trigger signal, where a user needs to perform the manual calibration or ask for the manual calibration after sale.
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 (9)
1. A laser projection device, comprising:
the projection screen is fixed at a first position;
the laser projection device is placed at the second position, and a projected picture of the laser projection device is matched with the projection screen;
characterized in that the laser projection device comprises:
the first optical navigation sensor is arranged at one corner of the bottom surface of the laser projection device; the first light ray used for receiving the self emission is quantized into first movement change data;
the second optical navigation sensor is arranged at the other corner of the bottom surface of the laser projection device in a diagonal position relation with the first optical navigation sensor; the second light ray used for receiving the self-emitted light is quantized into second movement change data;
a positioning unit for calculating a horizontal displacement amount and a vertical displacement amount of the laser projection device based on the first movement change data and the second movement change data;
the prompting unit is used for projecting return guide information on the projection screen when the horizontal displacement or the vertical displacement exceeds a preset value; the prompting unit comprises:
the first return guiding information generating module is used for generating a standard position map and a deviation position map; the standard position map is generated according to the fact that the laser projection device is placed at the second position, and the deviation position map is generated according to the standard position map on the basis of the horizontal displacement and the vertical displacement.
2. The laser projection device of claim 1, wherein the first homing information generation module comprises:
and the first updating sub-module is used for updating the deviation position map based on the horizontal displacement and the vertical displacement calculated by the positioning unit in the process that the laser projection device is moved and reset.
3. The laser projection device of claim 1, wherein the prompting unit comprises:
and the second return guide information generation module is used for generating first character information representing the current offset condition based on the horizontal displacement and the vertical displacement.
4. The laser projection apparatus of claim 3, wherein the second return guidance information generating module comprises:
and the second updating sub-module is used for updating the first character information based on the horizontal displacement and the vertical displacement calculated by the positioning unit in the process that the laser projection device is moved and reset.
5. The laser projection apparatus of claim 3, wherein the first text information generated by the second return guiding information generating module comprises:
the amount of horizontal displacement and the amount of vertical displacement that have moved; and/or the presence of a gas in the gas,
but also the amount of horizontal displacement and the amount of vertical displacement to be moved.
6. The laser projection device of claim 1, further comprising:
the timing unit is used for performing accumulated timing on the time of the user using the laser projection equipment;
the position establishing unit is used for establishing a coordinate system aiming at the laser projection device when the accumulated timing time of the timing unit reaches a preset value, and determining initial position data of the laser projection device based on the established coordinate system;
a storage unit for storing the initial position data;
and the initial position data corresponds to the position data when the laser projection equipment is positioned at the second position.
7. The laser projection device of claim 6, wherein the positioning unit comprises:
and the accumulation module is used for respectively accumulating the first movement change data and the second movement change data to obtain the horizontal displacement and the vertical displacement.
8. The laser projection device of claim 6, further comprising:
the lifting trigger button is arranged on the bottom surface of the laser projection device and used for generating a first trigger signal when the laser projection device leaves the plane where the second position is located;
and the clearing unit is used for clearing the first movement change data and the second movement change data in the storage unit when the first trigger signal is received.
9. The laser projection device of claim 8, further comprising:
and the second prompting unit is used for sending out a manual calibration prompt when the lifting trigger button generates the first trigger signal.
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| CN206505254U (en) * | 2016-12-30 | 2017-09-19 | 明基电通有限公司 | Projector's automatic positoning system |
| CN111064940A (en) * | 2019-12-20 | 2020-04-24 | 青岛海信激光显示股份有限公司 | Laser projection television |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5736535B2 (en) * | 2009-07-31 | 2015-06-17 | パナソニックＩｐマネジメント株式会社 | Projection-type image display device and image adjustment method |
| JP2016224172A (en) * | 2015-05-28 | 2016-12-28 | 株式会社リコー | Projection system, image processing device, calibration method and program |
| JP7025634B2 (en) * | 2017-11-01 | 2022-02-25 | ミツミ電機株式会社 | Image projection device and image projection method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815191A (en) * | 2010-04-24 | 2010-08-25 | 中兴通讯股份有限公司 | Method for regulating display picture by using portable terminal projector and portable terminal |
| CN106918974A (en) * | 2015-12-24 | 2017-07-04 | 深圳市光峰光电技术有限公司 | Projector equipment, optical projection system and its correcting and regulating method |
| CN206505254U (en) * | 2016-12-30 | 2017-09-19 | 明基电通有限公司 | Projector's automatic positoning system |
| CN111064940A (en) * | 2019-12-20 | 2020-04-24 | 青岛海信激光显示股份有限公司 | Laser projection television |
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