CN106918974A - Projector equipment, optical projection system and its correcting and regulating method - Google Patents

Abstract

The invention provides a projection device, a projection system and a calibration method thereof, including a beam generator for emitting a first beam, a second beam and a third beam, and the first beam, the second beam and the third beam The projection line formed on a rectangular screen with a preset size and a preset relative position with the projection device coincides with any three sides of the rectangular screen. Based on this, the user can adjust the first light beam and the second light beam and the projection position of the third light beam, so that the projection lines of the first light beam, the second light beam and the third light beam onto the rectangular screen coincide with any three sides of the rectangular screen, so that the relative position between the projection device and the rectangular screen is The relative position is preset, that is, the position at the initial installation by professional installers, thereby solving the problem that the user cannot normally watch the projected image due to the change of the relative position between the projection device and the screen.

Description

Projection equipment, projection system and calibration method thereof

technical field

The present invention relates to the technical field of projectors, and more specifically, to a projection device, a projection system and a calibration method thereof.

Background technique

Before using the projection device to project an image, the projection device needs to be calibrated to ensure that the user can watch the image normally. When calibrating the projection equipment, it is necessary to ensure that the projected image matches the preset size of the screen, that is, to ensure that the rectangular projection area formed by the projected image on the rectangular screen coincides with the rectangular screen, and that the projected image is clear and accurate.

Although professionally trained installers will accurately calibrate the projection equipment during the initial installation of the projection equipment, it is unavoidable that the user accidentally touches the projection equipment during the use of the projection equipment, causing the projection equipment to be disconnected from the screen. The relative position is changed so that the projected image cannot be viewed normally. For users without professional training, it is often impossible to achieve accurate calibration, and professional installers are required to come to the site for calibration, which will bring a heavy workload to the manufacturer and installers.

Contents of the invention

In view of this, the present invention provides a projection device, a projection system and an adjustment method thereof to solve the problem in the prior art that users cannot normally view projected images due to changes in the relative positions between the projection device and the screen.

To achieve the above object, the present invention provides the following technical solutions:

A projection device, comprising a beam generator for emitting a first light beam, a second light beam and a third light beam, the first light beam, the second light beam and the third light beam are projected onto a The projection line formed on the rectangular screen with a preset relative position coincides with any three sides of the rectangular screen, and the first light beam, the second light beam and the third light beam maintain a preset angular relationship with respect to the projection device, and A preset relative positional relationship is maintained among the first light beam, the second light beam and the third light beam.

Preferably, the preset relative position between the rectangular screen and the projection device means that: the rectangular projection area formed on the rectangular screen by the image projected by the projection device in a preset initial state is the same as that of the rectangular screen. The screens overlap.

Preferably, the projection device further includes a level adjustment device; the level adjustment device is used to adjust the horizontal state of the projection device.

Preferably, the projection device further includes a level for judging whether the projection device is in a horizontal state, and prompting horizontal state information corresponding to the horizontal state of the projection device.

Preferably, the projection device includes a height adjustment device for adjusting the height of the projection device.

A projection system, comprising the projection device as described in any one of the above, a rectangular screen with a preset size and at least three light sensors, the at least three light sensors are arranged on three sides of the rectangular screen , at least one light sensor is arranged on each side;

The light sensor is used for sensing the light beam emitted by the light beam generator, and sends a prompt signal when the light is sensed.

A calibration method for a projection system, the projection system includes a projection device, the projection device includes a beam generator for emitting a first beam, a second beam and a third beam, the first beam, the second beam The projection line formed by projecting the third light beam onto a rectangular screen with a preset size and a preset relative position with the projection device coincides with any three sides of the rectangular screen, the first light beam, the second light beam and maintaining a preset angular relationship with respect to the projection device for the third beam, and maintaining a preset relative positional relationship among the first beam, the second beam and the third beam;

The calibration method includes:

adjusting the position of the projection device to adjust the projection positions of the first light beam, the second light beam and the third light beam on the rectangular screen with a preset size, so that the first light beam, the second light beam and the third light beam are on the The projection line on the rectangular screen coincides with the three sides of the rectangular screen, so that the relative position between the projection device and the rectangular screen is the preset relative position.

Preferably, the projection system further includes a level adjustment device, and the process of adjusting the position of the projection device includes: adjusting the level adjustment device of the projection device.

Preferably, the projection system further includes a height adjustment device, and the process of adjusting the position of the projection device includes: adjusting the height adjustment device of the projection device.

Preferably, the projection system further includes a rectangular screen with a preset size and at least three light sensors, the at least three light sensors are arranged on three sides of the rectangular screen, and each side is provided with at least one The light sensor; the light sensor is used to sense the light beam emitted by the light beam generator, and send a prompt signal when the light is sensed;

Adjusting the position of the projection device to adjust the projection positions of the first light beam, the second light beam and the third light beam on the rectangular screen with a preset size, so that the first light beam, the second light beam and the third light beam are on the rectangular screen The steps of coincident projection line with the three sides of the rectangular screen include:

Adjusting the position of the projection device so that the first light beam, the second light beam and the third light beam are respectively projected onto the three light sensors, so that the three light sensors send out the prompt signal, so that the The relative position between the projection device and the rectangular screen is a preset relative position.

Compared with the prior art, the technical solution provided by the present invention has the following advantages:

In the projection device, projection system and calibration method provided by the present invention, the user can adjust the projection positions of the first beam, the second beam and the third beam emitted by the beam generator in the projection device so that the first beam, the second beam The projection line projected by the second beam and the third beam on the rectangular screen coincides with any three sides of the rectangular screen, so that the relative position between the projection device and the rectangular screen is the preset relative position, that is, the position of the professional installer during the initial installation , thereby solving the problem that the user cannot normally watch the projected image due to the change of the relative position between the projection device and the screen.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a schematic structural diagram of a projection device provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a projection system provided by another embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

One embodiment of the present invention provides a projection device, as shown in Figure 1, the projection device 1 includes a beam generator 10, the beam generator 10 is used to emit a first beam a1, a second beam a2 and a third beam a3, when the position between the projection device 1 and the preset size of the rectangular screen 2 is a preset relative position, the projection lines of the first light beam a1, the second light beam a2 and the third light beam a3 on the rectangular screen 2 are consistent with the rectangular screen Any three sides of 2 coincide.

In this embodiment, only the rectangular screen 2 arranged on the wall perpendicular to the horizontal plane is used as an example for illustration, but in other embodiments, the rectangular screen 2 can also be arranged on the ceiling, and the present invention does not restrict the placement of the rectangular screen 2. way is limited.

As shown in Figure 1, the projection lines of the first light beam a1, the second light beam a2 and the third light beam a3 on the rectangular screen 2 coincide with any three sides of the rectangular screen 2, which can be the first light beam a1 and the rectangular screen 2. The side b1 coincides, the second beam a2 coincides with the second side b2 of the rectangular screen, and the third beam a3 coincides with the third side b3 of the rectangular screen. Of course, in other embodiments, the first beam a1 can also coincide with the rectangular screen 2 The fourth side b4 coincides, but the present invention is not limited thereto.

In this embodiment, when the projection device 1 is initially installed, a professional installer will adjust the relative position between the projection device 1 and the rectangular screen 2 to an optimal position, and the optimal position is the preset relative position, Then fix the emission angle and positional relationship of the beam generator 10 so that the projection lines of the first beam a1 , the second beam a2 and the third beam a3 on the rectangular screen 2 coincide with any three sides of the rectangular screen 2 .

Among them, in the initial installation stage, the emission angle and positional relationship of the fixed beam generator 10 can be adjusted, but after its angle and positional relationship are fixed, it will not change with the position of the projection device 1, that is, it will not change with the position of the projection device 1. 1's level state and height state change. That is to say, if the horizontal state and the height state of the projection device 1 change, the projection position of the beam emitted by the beam generator 10 on the projection screen will change, but the angular relationship of the beam relative to the projection device 1 and the relationship between the three beams The relative positional relationship among them will not change with the change of the horizontal state and the height state of the projection device 1 .

For example, taking the approximate shape of the projection device 1 as a cuboid as an example, and taking the upper surface of the projection device 1 as the reference plane, assuming that the angle between the first light beam a1 and the reference plane is 45 degrees, the second light beam a2 and the third light beam a3 are both Perpendicular to the reference plane, the angle between the second beam a2 and the third beam a3 is 60 degrees, so no matter how the position of the projection device 1 changes, the angle between the first beam a1 and the reference plane remains at 45 degrees, and the second beam a2 and the third beam a3 are also always perpendicular to the reference plane, and the angle between the second beam a2 and the third beam a3 is also kept at 60 degrees.

Optionally, the optimal position of the projection device 1 may be that the projection position of the light outlet of the projection device 1 on the rectangular screen 2 is located on the symmetry axis of the rectangular screen 2 perpendicular to the horizontal plane. In other embodiments, the optimal position of the projection device 1 may be a preset distance between the projection device 1 and the center point of the rectangular screen 2 . Of course, the present invention does not specifically limit the best position, but only needs to ensure that the rectangular projection area formed on the rectangular screen 2 by the image projected by the projection device 1 coincides with the rectangular screen 2 at the best position, and the image presented on the rectangular screen 2 is clear , be accurate.

That is to say, the preset relative position between the rectangular screen 2 and the projection device 1 in this embodiment refers to: the rectangular projection area formed on the rectangular screen 2 by the image projected by the projection device 1 in the preset initial state and the rectangular Screen 2 coincides.

After the initial calibration of the projection device 1, in the subsequent use process, if the distance between the projection device 1 and the rectangular screen 2 changes, or the distance between the projection device 1 and the four vertices of the rectangular screen 2 changes, then If the projection direction is deflected, then the projection positions of the first light beam a1, the second light beam a2 and the third light beam a3 on the rectangular screen 2 will also change. Whether the projection lines of the light beam a1, the second light beam a2 and the third light beam a3 on the rectangular screen 2 coincide with the above-mentioned three sides of the rectangular screen 2 can determine whether the relative position between the projection device 1 and the rectangular screen 2 is preset The relative position is the best position, which simplifies the calibration process of the projection equipment.

In this embodiment, the beam generator 10 may include a first laser module emitting the first beam a1, a second laser module emitting the second beam a2, and a third laser module emitting the third beam a3. Wherein, each laser module includes a laser and a beam expander located on the corresponding outgoing light path of the laser. Since the beam expander can expand the laser beam into a beam propagating in a plane with a preset angle, the first beam a1 emitted by the first laser module, the second beam a2 emitted by the second laser module, and the third beam a2 The third light beam a3 emitted by the laser module can form a projection line of a certain length on the rectangular screen 2 .

In this embodiment, the projection device 1 includes a level adjustment device, a level and a height adjustment device. The level adjusting device is used to adjust the horizontal state of the projection device 1 and the projection positions of the first light beam a1 , the second light beam a2 and the third light beam a3 . The spirit level is used to judge whether the projection device 1 is in a level state. The height adjusting device is used for adjusting the height of the projection device 1 and the projection positions of the first light beam a1 , the second light beam a2 and the third light beam a3 .

When the relative position between the projection device 1 and the rectangular screen 2 changes, the relative position includes the distance between the projection device 1 and the rectangular screen 2 and the distance between the projection device 1 and the four vertices of the rectangular screen 2, the user The position of the projection device 1 can be adjusted by a level adjustment device, a height adjustment device, and the like.

During the process of adjusting the projection device 1 by the level adjustment device, the positions of the projection lines of the first light beam a1, the second light beam a2 and the third light beam a3 on the rectangular screen 2 will also change, and when the projection device is adjusted by the height adjustment device 1, the positions of the projection lines of the first beam a1, the second beam a2 and the third beam a3 on the rectangular screen 2 will also change. Therefore, it is only necessary to judge the first beam a1, the second beam a2 and the third beam a2 Whether the projection lines of the three light beams a3 on the rectangular screen 2 coincide with the above-mentioned three sides of the rectangular screen 2 can determine whether the position of the projection device 1 is an optimal position.

In the projection device provided by this embodiment, the user can adjust the projection positions of the first light beam, the second light beam and the third light beam emitted by the beam generator in the projection device, so that the first light beam, the second light beam and the third light beam are projected onto The projection line on the rectangular screen coincides with any three sides of the rectangular screen, so that the relative position between the projection device and the rectangular screen is the preset relative position, that is, the position of the professional installer during the initial installation, thus solving the problem caused by the projection device and the rectangular screen. The problem that the user cannot view the projected image normally due to the change of the relative position of the screen.

Another embodiment of the present invention provides a projection system, as shown in FIG. 2 , the projection system includes the projection device 1 described in the above embodiment, a rectangular screen 2 with a preset size and at least three light sensors, The at least three light sensors are arranged on three sides of the rectangular screen 2, and at least one light sensor is set on each side. The light sensor is used to sense the light beam emitted by the beam generator 10 in the projection device 1, such as the first light beam a1, the second light beam a2 or the third light beam a3, when the light sensors on the three sides of the rectangular screen 2 all sense When light rays are used, the projection lines of the first light beam a1 , the second light beam a2 and the third light beam a3 onto the rectangular screen 2 coincide with the three sides of the rectangular screen 2 .

In the following, the projection system includes three light sensors 30, 31 and 32 as an example for illustration. The light sensor 30 is set on the first side b1 of the rectangular screen 2, and the light sensor 31 is set on the second side b2 of the rectangular screen 2. Above, the light sensor 32 is arranged on the third side b3 of the rectangular screen 2 . It should be further noted that the three sides of the rectangular screen 2 where the light sensor is installed are the three sides b1 , b2 and b3 where the first light beam a1 , the second light beam a2 and the third light beam a3 coincide with the rectangular screen 2 .

Wherein, the light sensor 30 is used to sense the first beam a1, the light sensor 31 is used to sense the second light beam a2, and the light sensor 32 is used to sense the third light beam a3. When the light sensors 30, 31 and 32 all sense The projection lines of the first light beam a1, the second light beam a2 and the third light beam a3 onto the rectangular screen 2 coincide with the three sides b1, b2 and b3 of the rectangular screen 2 respectively.

Further, when the light sensor senses light, a prompt signal can be sent out, and the prompt signal includes a sound signal, or a light signal, or a sound signal and a light signal, to remind the user of the first light beam a1, the second light beam a2 and the third light beam a3 The projection line projected onto the rectangular screen 2 coincides with the three sides of the rectangular screen 2, so that the user no longer needs human eyes to judge whether the three light beams coincide with the edges of the rectangular screen 2, making the adjustment method of the projection system more convenient and practical.

In this embodiment, the light sensor may be a sensor that uses a photosensitive element to convert light signals into electrical signals, but the present invention is not limited thereto. Further, when the light sensor senses the light, the sounding module (such as a microphone) can be controlled to emit a sound signal through an electrical signal, or the light emitting module (such as a light emitting diode) can be controlled to emit a light signal, or the sounding module can be controlled to emit a sound signal while controlling light emission The module emits a light signal.

In the projection system provided by this embodiment, the user can adjust the projection positions of the first light beam, the second light beam and the third light beam emitted by the light beam generator in the projection device, so that the first light beam, the second light beam and the third light beam are projected onto The projection line on the rectangular screen coincides with any three sides of the rectangular screen, so that the relative position between the projection device and the rectangular screen is the preset relative position, that is, the position of the professional installer during the initial installation, thus solving the problem caused by the projection device and the rectangular screen. The problem that the user cannot view the projected image normally due to the change of the relative position of the screen.

Another embodiment of the present invention provides a calibration method for a projection system, which is applied to the projection system provided in the above embodiment. The projection system includes a projection device, and the projection device includes a beam generator for emitting a first beam, The second light beam and the third light beam, the projection line formed on the rectangular screen having a preset size and a preset relative position with the projection device and the rectangle formed by the first light beam, the second light beam and the third light beam are projected Any three sides of the screen coincide, the first light beam, the second light beam and the third light beam maintain a preset angular relationship with respect to the projection device, and the first light beam, the second light beam and the third light beam maintain a preset The relative position relationship, the calibration method includes:

Adjust the position of the projection device to adjust the projection position of the first light beam, the second light beam and the third light beam on the rectangular screen with a preset size, so that the projection of the first light beam, the second light beam and the third light beam on the rectangular screen The line coincides with the three sides of the rectangular screen, so that the relative position of the projection device and the rectangular screen is a preset relative position.

In this embodiment, after the initial calibration of the projection device, the emission angle and positional relationship of the beam generator are fixed. At this time, if the position of the projection device 1 changes, the projection of the first beam, the second beam and the third beam The positions will also change, therefore, the projection positions of these three light beams can be adjusted through the horizontal adjustment device and the height adjustment device of the projection equipment, that is, the projection positions of the first light beam, the second light beam and the third light beam on the rectangular screen can be adjusted. The process includes:

Adjust the level adjustment device or the height adjustment device of the projection device to adjust the projection positions of the first light beam, the second light beam and the third light beam on the rectangular screen; or adjust the level adjustment device and the height adjustment device of the projection device to Adjusting the projection positions of the first light beam, the second light beam and the third light beam on the rectangular screen.

In this embodiment, the projection system further includes a rectangular screen with a preset size and at least three light sensors, the at least three light sensors are arranged on three sides of the rectangular screen, and each side is provided with at least one The light sensor; the light sensor is used to sense the light beam emitted by the light beam generator, and send a prompt signal when the light is sensed;

Based on this, the position of the projection device is adjusted to adjust the projection positions of the first light beam, the second light beam and the third light beam on the rectangular screen with a preset size, so that the first light beam, the second light beam and the third light beam are on the The steps for the projection line on the rectangular screen to coincide with the three sides of the rectangular screen include:

Adjusting the position of the projection device so that the first light beam, the second light beam and the third light beam are respectively projected onto the three light sensors, so that the three light sensors send out the prompt signal, so that all The relative position between the projection device and the rectangular screen is a preset relative position.

Optionally, the preset relative position refers to: the rectangular projection area formed on the rectangular screen by the image projected by the projection device in a preset initial state coincides with the rectangular screen.

In the calibration method of the projection system provided in this embodiment, the user can adjust the projection positions of the first beam, the second beam and the third beam emitted by the beam generator in the projection device so that the first beam, the second beam and the third beam The projection line projected by the three beams onto the rectangular screen coincides with any three sides of the rectangular screen, so that the relative position between the projection device and the rectangular screen is the preset relative position, which is the position of the professional installer during the initial installation, thus solving the problem The problem that the user cannot normally watch the projected image due to the change of the relative position between the projection device and the screen.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related part, please refer to the description of the method part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a kind of projector equipment, it is characterised in that including light-beam generator, for launch the first light beam, Second light beam and the 3rd light beam, first light beam, the second light beam and the 3rd light beam are projected with default The projection line that size and having with the projector equipment is formed in the rectangular screen of default relative position with it is described Any three side of rectangular screen overlaps, and first light beam, the second light beam and the 3rd light beam are relative to projection Equipment keeps default angular relationship, and first light beam, guarantor between the second light beam and the 3rd light beam Hold default relative position relation.

2. projector equipment according to claim 1, it is characterised in that the rectangular screen with it is described There is projector equipment default relative position to refer to：The projector equipment is projected under default original state The rectangular projection region that is formed in the rectangular screen of image overlapped with the rectangular screen.

3. projector equipment according to claim 1, it is characterised in that the projector equipment also includes Level(l)ing device；The level(l)ing device is used to adjust the horizontality of the projector equipment.

4. projector equipment according to claim 3, it is characterised in that the projector equipment also includes Whether level meter, for judging the projector equipment in horizontality, and points out the projector equipment The corresponding level status information of horizontality.

5. projector equipment according to claim 1, it is characterised in that the projector equipment includes height Degree adjusting means, the arrangement for adjusting height is used to adjust the height of the projector equipment.

6. a kind of optical projection system, it is characterised in that set including the projection described in any one of Claims 1 to 5 Rectangular screen standby, with default size and at least three optical inductors, at least three photoinduction Device is arranged on three sides of the rectangular screen, and each side is at least provided with an optical inductor；

The optical inductor is used to sense the light beam of the light-beam generator transmitting, and when light is sensed Send cue.

7. a kind of correcting and regulating method of optical projection system, it is characterised in that the optical projection system includes projector equipment, The projector equipment includes light-beam generator, for launching the first light beam, the second light beam and the 3rd light beam, First light beam, the second light beam and the 3rd light beam project with default size and with the projector equipment The projection line formed in rectangular screen with default relative position is heavy with any three side of the rectangular screen Close, first light beam, the second light beam and the 3rd light beam keep default angle to close relative to projector equipment System, and first light beam, between the second light beam and the 3rd light beam keep default relative position relation；

The correcting and regulating method includes：

The position of projector equipment is adjusted, to adjust first light beam, the second light beam and the 3rd light beam in tool There is the projected position in the rectangular screen of default size, make first light beam, the second light beam and the 3rd light Projection line of the beam in the rectangular screen overlaps with three sides of the rectangular screen, so that the projection sets The standby relative position with the rectangular screen is the default relative position.

8. correcting and regulating method according to claim 7, it is characterised in that the optical projection system also includes Level(l)ing device, the process of the position of the adjustment projector equipment includes：Adjust the projector equipment Level(l)ing device.

9. correcting and regulating method according to claim 7, it is characterised in that the optical projection system also includes Arrangement for adjusting height, the process of the position of the adjustment projector equipment includes：Adjust the projector equipment Arrangement for adjusting height.

10. correcting and regulating method according to claim 7, it is characterised in that the optical projection system is also wrapped Include rectangular screen and at least three optical inductors with default size, at least three optical inductor It is arranged on three sides of the rectangular screen, each side is at least provided with an optical inductor；Institute Optical inductor is stated to be carried for sensing the light beam of the light-beam generator transmitting, and being sent when light is sensed Show signal；

The position of projector equipment is adjusted to adjust the first light beam, the second light beam and the 3rd light beam with default Projected position in the rectangular screen of size, makes first light beam, the second light beam and the 3rd light beam at this The step of projection line in rectangular screen overlaps with three sides of the rectangular screen includes：

The position of projector equipment is adjusted to cause that first light beam, the second light beam and the 3rd light beam are thrown respectively It is mapped on three optical inductors so that three optical inductors send the cue, so that The projector equipment is default relative position with the relative position of the rectangular screen.