WO2019034057A1 - Projector and control method thereof - Google Patents

Abstract

The present application provides a projector and a control method therefor. The projector comprises a control system and an optical machine system. The projection area of the projector comprises a primary projection area and a secondary projection area. The control system controls the optical machine system to project a primary projection image to the primary projection area, and project a secondary projection image to the secondary projection area. The primary projection image projected to the primary projection area comprises an icon and a plurality of options corresponding to the icon; and when it is detected that the icon is operated by a user, the plurality of options are displayed. When one of the options is operated by the user, the control system executes a corresponding operation, and controls the optical machine system to change the secondary projection image projected to the secondary projection area.

Description

Projector and control method thereof Technical field

The present disclosure relates to, but is not limited to, the field of projection technology.

Background technique

Intelligent projectors, typically based on projection and mobile internet, offer portable content projectors that offer great content sharing.

However, in the scenes taught by the teacher or in the public venue, the content filtering needs to be performed at the same time as the projection. This requires the projection function to be turned off, and the projection is selected after the content is selected, the operation is complicated, and the user experience is poor.

Summary of the invention

In one aspect, an embodiment of the present disclosure provides a projector including a control system and an optical system, the control system controlling the optical system to project an image to a projection area, the projection area including a main projection area in different directions and a sub-projection area; the control system system controls the optomechanical system to project a main projection image to the main projection area, and project a sub-projection image to the sub-projection area, wherein the main projection image includes an icon and a plurality of icons corresponding to the icon An option, when detecting that the icon is operated by a user, displaying the plurality of options; when one of the options is operated, the control system performs a corresponding operation to control the optomechanical system to change to a secondary projection Sub-projected image of the area projection.

In another aspect, the embodiment of the present disclosure further provides a control method of a projector, where the projector is a projector described herein, the control method includes the step of controlling an optical system to project an image to a projection area, The projection area of the projector includes a main projection area and a sub-projection area in different directions; the control method includes: controlling the optomechanical system to project a main projection image to the main projection area, and projecting a sub-projection image to the sub-projection area, wherein The main projected image includes an icon and a plurality of options corresponding to the icon, and when the icon is detected to be operated by a user, displaying the plurality of options; when one of the options is operated, controlling the The optomechanical system changes the secondary projected image projected onto the secondary projection area.

DRAWINGS

In order to more clearly explain the technical solutions in the embodiments of the present disclosure or the related art, the drawings to be used in the embodiments or the related art description will be briefly described below. Obviously, the drawings in the following description are only Some of the disclosed embodiments can be used to obtain other figures from those of ordinary skill in the art without departing from the scope of the invention.

1 is a block diagram showing the composition of a projector in accordance with an embodiment of the present disclosure;

2 is a partial structural schematic view of a projector according to an embodiment of the present disclosure;

3 is another block diagram of a composition of a projector in accordance with an embodiment of the present disclosure;

4 is a block diagram of still another composition of a projector in accordance with an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of a projector according to an embodiment of the present disclosure.

Detailed ways

Specific embodiments of the present disclosure will be further described in detail below with reference to the drawings and embodiments. The following examples are intended to illustrate the disclosure, but are not intended to limit the scope of the disclosure.

1 is a block diagram showing the composition of a projector according to an embodiment of the present disclosure; FIG. 2 is a partial structural diagram of a projector according to an embodiment of the present disclosure; FIG. 3 is another block diagram of a projector according to an embodiment of the present disclosure; It is another block diagram of a projector according to an embodiment of the present disclosure; FIG. 5 is a schematic structural view of a projector according to an embodiment of the present disclosure.

As shown in FIG. 1 to FIG. 5, an embodiment of the present disclosure provides a projector, including: a control system 1 and a optomechanical system. The optomechanical system includes an optical assembly 2, a lens and a digital micromirror wafer 3. The optical component 2 is usually composed of a plurality of lenses. The light emitted by the light source 4 is adjusted by the optical component 2, and then concentrated by a triangular prism (not shown) to the digital micromirror wafer 3. The digital micromirror wafer 3 loads the modulated digital number. The optical image is projected through the lens.

The control system 1 controls the optomechanical system to project an image onto the projection area. The projection area includes a main projection area and a sub-projection area located in different directions.

The control system system controls the optomechanical system to project a main projected image to the main projection area and a secondary projected image to the sub-projection area. Wherein the main projected image includes an icon and a plurality of options corresponding to the icon, when the icon is detected to be operated by a user (eg, a click operation), the plurality of options are displayed; when one of the options is When operated by a user (e.g., a click operation), the control system performs a corresponding operation to control the optomechanical system to change the secondary projected image projected onto the secondary projection zone.

The above technical solution sets the projection area of the projector to include a main projection area and a sub-projection area, and sets a main projection image projected to the main projection area to include an icon and a plurality of options corresponding to the icon, when the user operates one of the options That is, corresponding to changing the sub-projection image projected to the sub-projection area, the user realizes the sub-projection image of the sub-projection area through the main projection area, and the operation is simple and the user experience is improved.

In some embodiments, changing the secondary projected image projected onto the secondary projection region includes switching the secondary projected image, interpolating the primary projected image in the secondary projection region, displaying the primary projected image in a partial region of the secondary projected image, and the like.

In some embodiments, the plurality of options can be set to include a first option, the control system controlling the projection of the optomechanical system to the secondary projection area when the first option is operated (eg, a click operation) The secondary projection image includes a sub-projection image that is identical to the main projection image, and the sub-projection image is located in a partial region of the secondary projection image to achieve the effect of "picture-in-picture".

In some embodiments, the plurality of options can be set to include a second option, the control system controlling the optomechanical system to switch to the secondary projection area when the second option is operated (eg, a click operation) The image is the main projected image, which realizes the insertion.

Of course, changing the sub-projection image projected to the sub-projection area is not limited to the above several forms, and will not be enumerated here.

In the actual application process, the main projection area of the present disclosure is a close projection area, which is close to the teacher or the lecturer, so that the teacher or the lecturer can change the secondary projection image of the sub-projection area through the main projection area. The secondary projection area is a remote projection area that is intended for students or listeners to enable students or listeners to view sub-projected images.

In some embodiments, to increase the flexibility of the device, the projection area of the projector is arranged to include two main projection areas in the same plane, the main projection images of the two main projection areas being the same. In one embodiment, the projector includes a projector body 100, and the two main projection areas are respectively located on opposite sides of the projector body 100, that is, two close projection areas are disposed on opposite sides of the projector. It is convenient for users to choose according to the actual situation.

In some embodiments, the optomechanical system includes two main lenses 12, which are respectively disposed on the opposite sides of the projector body, and the main lens 12 is configured to A main projection area on the same side of the projector body projects a main projection image.

The same image can be simultaneously supplied to the two main lenses 12 by a spectroscopic system or two optomechanical systems. The specific implementation principle will be described below.

In some embodiments, in order to achieve the purpose that the teacher or the lecturer can flexibly manipulate the projected image, setting the projector further includes: two laser scanning arrays 7 respectively disposed on the opposite sides of the projector body 100 Two first cameras 8 respectively disposed on the opposite sides of the projector body 100; the laser scanning array 7 configured to emit a plurality of surfaces of the main projection area covering the same side of the projector body 100 a laser line; the first camera 8 is configured to acquire laser light reflected by a user when touching a surface of a main projection area on the same side of the projector body 100; the control system 1 is connected to the first camera 8, and is also constructed For the laser light acquired according to the first camera 8, the position touched by the user is determined, and the light machine system is controlled to project a main projected image corresponding to the touch position to the main projection area.

In one embodiment, the laser scanning array 7 can be placed at the bottom of the projector body 100 of the projector near the plane of the main projection area.

The above technical solution can improve the accuracy of the touch position detection by using the laser scanning array 7, and at the same time, in the case where a plurality of laser heads (for example, three to five) illuminate the main projection area at multiple angles, the multi-touch position can be realized. Detect, respond to teachers or instructors in a timely manner, and perform appropriate operations.

In one example, the laser scanning array 7 uses a 850 nm or 808 nm infrared word line to create a fan that is invisible to the naked eye, spreading the entire main projection area. The thickness of this laser infrared fan is about 1mm to 2mm. When an object such as a finger or a special stylus is close to the main projection area, the infrared rays on the laser infrared fan surface are reflected to form a reflection point. The tip of the finger or stylus will act as an infrared. The point is displayed. The first camera 8 captures the infrared reflection point, and transmits the main projection image of the main projection area to the control system 1 at this time, and the control system 1 processes and analyzes the main projection image to identify the touch event and the coordinate position of the infrared reflection point. Realizing manipulation of various application icons in the main projection image, and then calling corresponding control commands to perform corresponding operations, for example, forming a new main projection image, and then projecting a new main projection image through the main lens 12 to the main projection Area.

In some embodiments, two second cameras 10 may be disposed on the opposite sides of the projector body 100 respectively, configured to collect the surface of the main projection area on the same side of the projector body 100. laser. The control system 1 is coupled to the second camera 10 and configured to determine the position of the laser and control the manipulation of various application icons in the main projection map to perform corresponding operations.

In one example, the laser can be a laser emitted by a laser pointer held by a teacher or a lecturer. The laser spot hitting the main projection area is captured by the second camera 10, and the main projection image of the main projection area is transmitted to the control system 1 at this time, and the control system 1 processes and analyzes the main projection image to recognize the touch. The event and the coordinate position of the laser point, and then call the corresponding control command to realize the manipulation of various application icons in the main projected image, including multi-touch, to achieve the projection manipulation effect of "where to hit".

In some embodiments, the second camera 10 can be the same camera as the first camera 8. In the case that the laser scanning array 7 is not working, the second camera 10 captures the laser spot emitted by the laser pen, thereby improving the flexibility of the device.

The laser spot or laser reflection point captured by the camera can be fixed in position, or can be clicked, double-clicked or crossed. When the main projection area where the laser point or laser reflection point is located has a change in distance or inclination, trapezoidal correction must be performed, otherwise the coordinate calculation may be inaccurate. For example, the coordinate calculation compensation can be performed in real time according to the change of the projection area as follows: First, the length and width directions of the projection area where the laser point or the laser reflection point is located are respectively corrected by trapezoid; the second step is to identify and calculate The coordinates of the laser point or the laser reflection point are output; in the third step, the coordinates of the laser point or the laser reflection point are correlated with the trapezoidal correction parameter to obtain a real-time compensation value.

It can be understood by those skilled in the art that the number of main projection areas can also be one or more than two, and the number of corresponding components can also be adjusted accordingly. For example, in the case of one main projection area, a main lens corresponding thereto, a laser scanning array, a first camera, a second camera, and the like can be provided.

The projector of the present disclosure is capable of projecting images to the main projection area and the sub-projection area located in different directions, and the above object can be specifically achieved by a spectroscopic system or two optical system, which will be specifically described below.

In a specific embodiment, images can be projected to the primary and secondary projection zones located in different directions by a beam splitting system. This specific embodiment will be described below with reference to FIGS. 1 and 2. As shown in FIGS. 1 and 2, the optomechanical system includes a main lens 12 configured to project a main projection image to the main projection area, and a sub-lens 13 configured to The sub-projection area projects a sub-projection image; a spectroscopic system (splitting device) 11 , after the light is split by the spectroscopic system 11 , is respectively projected to the main lens 12 and the sub-lens 13 , and the main projection image and The secondary projected image is the same.

Specifically, the digital optical image of the digital micromirror wafer 3 loaded and modulated is subjected to the splitting action of the spectroscopic system 11 and simultaneously projected to the main lens 12 and the sub-lens 13 .

Here, the spectroscopic system 11 can be, but is not limited to, including a prism structure, and other optical elements capable of realizing the spectroscopic effect are also applicable to the technical solutions of the present disclosure.

When the spectroscopic system 11 includes the triangular prism 110, after the light is incident on the triangular prism 110, a part of the light is refracted and then emitted to the main lens 12, and the other part of the light is reflected and then emitted to the sub-lens 13.

In some embodiments, the spectroscopic system 11 further includes a concentrating element 111. The light reflected by the triangular prism 110 is concentrated by the concentrating element 111 and uniformly emitted to the sub-lens 13 to improve the display of the sub-projection image. effect. The concentrating element 111 may specifically be an optical structure such as an aspherical mirror.

Of course, in order to be able to project an image to the sub-projection area of the set direction, the direction of propagation of the light can be adjusted by the optical path deflection element so that the image can be projected in the desired setting direction. In some embodiments, the spectroscopic system 11 further includes an optical path deflecting element 112 through which the light exiting the concentrating element 111 passes through the optical path deflecting element 112 and exits to the secondary lens 13. The optical path deflection element 112 may specifically be a plane mirror to deflect the light propagation direction by 90°. Of course, the optical path deflection element can also be a combination of a plurality of reflectors to deflect the desired angle of light propagation.

In some embodiments, the optomechanical system is arranged to include two drive members 6, one of which corresponds to the position of the main lens 12 and the other of which has a position corresponding to the position of the secondary lens 13. The driving member 6 is configured to drive the corresponding lens movement to perform focusing so that the projected image is clearly displayed in the projection area.

In some embodiments, the drive component 6 can be a motor. Of course, the traditional physical wheel mode can also be used to directly adjust the lens movement for focusing. Since the functions of the driving members 6 are the same, they are identified by the same reference numerals.

In some embodiments, the spectroscopic system 11 is further provided with a switching element 5, and the control system 1 controls the spectroscopic system 11 to project an image to the main projection area and/or the sub-projection area by controlling the switching element 5, the user may Projecting images to the main and/or sub-projection areas as needed to increase the flexibility and versatility of the device.

In some embodiments, the switching element 5 may include a shielding plate disposed on the light exiting side, and the shielding member drives the shielding plate to block or block the emission of light, and the specific structure will not be described in detail herein.

In the above embodiment, the light is split by the spectroscopic system and simultaneously projected to the main lens and the sub-lens, and the projected images of the main projection area and the sub-projection area are the same. The technical solution has the advantages of only adding a mirror splitting system, simple structure, small volume, low cost and easy implementation.

In the above embodiment, in the case where the laser scanning array 7 is added to realize the touch position detection of the laser reflection point generated by the user's touch, the control system 1 gives feedback to the user's touch, and performs corresponding operations, the main projection area and the sub-projection area. The actions are the same, for example: both switch to a new projected image.

It is also possible to set the main projection area with priority control, and set the icon of the resident main projection area through necessary software design, and when the user feels necessary, operate (for example, click) the icon to display multiple options that the user can select, and then When the user operates (for example, clicks) one of the options, the control system 1 performs a corresponding operation in response to the user's operation. A new projected image that can be temporarily inserted during the automatic playback of the main projection area and the sub-projection area, and a new projection image can be included in the main projection area and the sub-projection area, so as to display a new projected image locally, such as "Picture in Picture "effect.

The laser scanning array 7 can be used to determine whether the icon is operated (for example, whether it is clicked). The specific principle has been described in detail above and will not be described herein.

As a modification of the above embodiment, as shown in FIG. 3, a spectroscopic system (splitting device) 11 may be disposed on the light exit side of the main lens 12 to split the light to simultaneously project the main projection area and the sub-projection area. The same image. For example, a prism can be disposed on the light exit side of the main lens 12 to split the light to simultaneously project the same image in two different directions. In this case, just ensure that the lens is in focus.

In another specific embodiment, images are projected to the primary and secondary projection zones located in different directions by adding a optomechanical system. This specific embodiment will be described below in conjunction with FIG. As shown in FIG. 4, the optomechanical system includes: a main optomechanical system and a secondary optomechanical system; the control system controls the main optomechanical system to project a main projection image to the main projection area, and control the secondary optomechanical system A secondary projected image is projected to the secondary projection area, the primary projected image and the secondary projected image being the same or different.

The advantage of this technical solution is that the user can project the same or different images in the main projection area and the sub-projection area as needed, and the flexibility is high.

The main optical system and the secondary optical system each include an optical component 2, a digital micromirror wafer 3, a lens (the main optical system includes a main lens 12 in the figure, and the secondary optical system includes a secondary lens 13 in the figure), Light source 4, etc. The switches of the primary optomechanical system and the secondary optomechanical system can be controlled by software switches.

In the above specific embodiment, in the case where the laser scanning array 7 is added to realize the touch position detection of the laser reflection point generated by the user touching the main projection area, the control system 1 gives feedback to the user's touch and performs a corresponding operation.

It is also possible to set the main projection area with priority control, and set the icon of the resident main projection area through necessary software design. When the user feels it is necessary, the icon is opened to display multiple options that the user can select, and then when the user operates ( For example, when one of the options is clicked, the control system 1 performs a corresponding operation in response to the user's touch. It can project real-time linkage, or interrupt the secondary projection image of the sub-projection area and switch to the main projection image of the main projection area. It can also be temporarily inserted into the main projection image of the main projection area when the sub-projection area is automatically played. The sub-projection image of the sub-projection area may be included in the main projection image to realize a main projection image of the main projection area, such as a "picture in picture" effect.

The laser scanning array 7 can be used to determine whether the icon is operated (for example, whether it is clicked). The specific principle has been described in detail above and will not be described herein.

In some embodiments, the optomechanical system is arranged to include two drive members 6, one of which corresponds to the position of the main lens 12 and the other of which has a position corresponding to the position of the secondary lens 13. The driving member 6 is configured to drive the corresponding lens movement to focus so that the projected image is clearly displayed in the projection area.

In some embodiments, the drive component 6 can be a motor. Of course, the traditional physical wheel mode can also be used to directly adjust the lens movement for focusing. Since the functions of the driving members 6 are the same, they are identified by the same reference numerals.

The above specific embodiment realizes projecting images to the main projection area and the sub-projection area located in different directions by providing two optical machine systems, and can realize the same or different images projected to the main projection area and the sub-projection area, and the flexibility is more flexible. high.

In some embodiments, setting the projector further includes a third camera 9 configured to acquire a projected image of the primary and secondary projection regions. The control system 1 is coupled to the third camera 9, configured to determine whether the image of the projection area is out of focus, and if out of focus, the control drive unit 6 drives the corresponding lens movement until the image of the projection area is out of focus.

It should be noted that the above first camera 8, second camera 10 and third camera 9 can be independently arranged, and the specific setting positions can be flexibly processed, for example, they can all be placed at the same position of the projector body, and can also be conveniently Different cameras are installed at different angles of inclination. In the above first camera 8, second camera 10, and third camera 9, the two cameras may be the same camera, or the three cameras may be the same camera, and the number of cameras may be reduced by time division multiplexing. For example, the projection image and the laser spot of the projection area are acquired by the same camera in a time-sharing manner, and the projection autofocus and the laser spot automatic recognition are respectively performed.

Based on the same inventive concept, an embodiment of the present disclosure further provides a method of controlling a projector. In some embodiments, the control method includes the step of controlling the optomechanical system to project an image onto the projection area.

In some embodiments, the projection area includes a main projection area and a sub-projection area in different directions, and the controlling method may include: controlling the optomechanical system to project a main projection image to the main projection area, to the sub-projection area Projecting a secondary projected image, wherein the primary projected image includes an icon and a plurality of options corresponding to the icon, the plurality of options being displayed when detecting that the icon is operated by a user (eg, a click operation); When one of the options is operated (e.g., a click operation), the optomechanical system is controlled to change the secondary projected image projected onto the secondary projection area.

The above technical solution sets the projection area of the projector to include a main projection area and a sub-projection area, and sets a main projection image projected to the main projection area to include an icon and a plurality of options corresponding to the icon, and the user operates (eg, clicks) When one of the options is selected, the sub-projection image projected to the sub-projection area is changed correspondingly, and the sub-projection image of the sub-projection area is changed by the user through the main projection area, which is easy to operate and improves the user experience.

The above steps may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device. Implemented so that they can be stored in a storage device by a computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be separately fabricated into individual integrations. The circuit modules are implemented by making a plurality of modules or steps of them into a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

The above is only an exemplary embodiment of the present disclosure, and it should be noted that those skilled in the art can make several improvements and substitutions without departing from the principles of the disclosed technology. Substitutions are also considered to be the scope of protection of the present disclosure.

Claims (11)

A projector comprising a control system and an optical system, the control system controlling the optical system to project an image to a projection area, wherein the projection area comprises a main projection area and a sub-projection area in different directions; The control system system controls the optomechanical system to project a main projection image to the main projection area, and project a sub-projection image to the sub-projection area, wherein the main projection image includes an icon and a plurality of options corresponding to the icon, when Displaying the plurality of options when detecting that the icon is operated by a user; When one of the options is operated, the control system performs a corresponding operation to control the optomechanical system to change the secondary projected image projected onto the secondary projection zone. The projector of claim 1 wherein said plurality of options includes a first option, said control system controlling a secondary projection of said optomechanical system to a secondary projection area when said first option is operated The image includes a sub-projection image that is identical to the main projection image. The projector according to claim 1, wherein said plurality of options includes a second option, said control system controlling said optomechanical system to switch an image projected to said sub-projection area when said second option is operated Project the image as the main. The projector according to claim 1, wherein said projection area comprises two main projection areas located in the same plane; The projector includes a projector body, and the two main projection areas are respectively located on opposite sides of the projector body; The optomechanical system includes two main lenses, the two main lenses are respectively disposed on the opposite sides of the projector body, and the main lens is configured to be located on the same side of the projector body The main projection area projects the main projected image. The projector of claim 4, wherein the projector further comprises: Two laser scanning arrays respectively disposed on the opposite sides of the projector body; Two first cameras are respectively disposed on the opposite sides of the projector body; The laser scanning array is configured to emit a plurality of laser lines covering a surface of a main projection area on the same side of the projector body; the first camera is configured to acquire a user to touch a main projection area located on the same side of the projector body Laser reflected from the surface; The control system is coupled to the first camera, and is further configured to determine a position touched by the user according to the laser light acquired by the first camera, and control the light machine system to project a main projected image corresponding to the touch position to the main projection area. The projector of claim 4, wherein the projector further comprises: Two second cameras respectively disposed on the opposite sides of the projector body, configured to collect laser light on a surface of a main projection area on the same side of the projector body; The control system is coupled to the second camera and configured to determine a position of the laser and to control the optomechanical system to project a main projected image corresponding to the laser position toward the main projection area. The projector according to any one of claims 1 to 3, wherein the optomechanical system comprises: a main lens and a sub-lens, the main lens configured to project a main projection image to the main projection area, the sub-lens configured to project a sub-projection image to the sub-projection area; In the spectroscopic system, after the light is split by the spectroscopic system, the light is respectively projected to the main lens and the sub-lens, and the main projected image and the sub-projected image are the same. The projector according to any one of claims 4 to 6, wherein the optomechanical system further comprises: a secondary lens configured to project a secondary projected image to the secondary projection area; In the spectroscopic system, after the light is split by the spectroscopic system, the light is respectively projected to the main lens and the sub-lens, and the main projected image and the sub-projected image are the same. The projector according to claim 7 or 8, wherein the spectroscopic system further comprises: A switching element that controls the spectroscopic system to project an image onto the main projection area and/or the sub-projection area by controlling the switching element. The projector according to any one of claims 1 to 6, wherein the optomechanical system comprises a main optomechanical system and a secondary optomechanical system; The control system controls the main light machine system to project a main projected image to the main projection area, and controls the secondary light machine system to project a secondary projected image to the secondary projected area, the primary projected image and the secondary projected image being the same or different. A projector control method, the projector of any one of claims 1 to 10, the control method comprising the step of controlling an optical system to project an image onto a projection area, wherein the projection The projection area of the instrument includes a main projection area and a sub-projection area in different directions; The control method includes: Controlling the optomechanical system to project a main projected image to the main projection area, and projecting a sub-projection image to the sub-projection area, wherein the main projected image includes an icon and a plurality of options corresponding to the icon, when the icon is detected Displaying the plurality of options when operated by a user; When one of the options is operated, the optomechanical system is controlled to change the secondary projected image projected onto the secondary projection zone.

Images