CN113281951A - Projection equipment, projection system and projection method - Google Patents
Projection equipment, projection system and projection method Download PDFInfo
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- CN113281951A CN113281951A CN202010102969.5A CN202010102969A CN113281951A CN 113281951 A CN113281951 A CN 113281951A CN 202010102969 A CN202010102969 A CN 202010102969A CN 113281951 A CN113281951 A CN 113281951A
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- projection
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- invisible light
- visible light
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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
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
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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
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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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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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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
- G03B21/20—Lamp housings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
Abstract
The invention discloses a projection device, a projection system and a projection method, wherein the projection device comprises an invisible light source, a visible light source, an imaging device and a projection device, wherein the imaging device is arranged on the path of the invisible light source and is used for imaging the invisible light to form an invisible light characteristic image; the projection device is used for receiving the invisible light characteristic image and projecting the invisible light characteristic image to a projection plane to form a characteristic projection image; the device is also used for forming a visible light image and projecting the visible light image to a projection plane; and the system is also used for receiving monitoring information of the characteristic projection image and adjusting the projection state of the visible light image on the projection plane. The projection state adjusting device can enable the adjustment of the projection state of the projection image not to be influenced by the external environment, so that the influence of the working environment on the adjustment of the projection state of the projection equipment is reduced.
Description
Technical Field
The present invention relates to the field of projection technologies, and in particular, to a projection apparatus, a projection system, and a projection method.
Background
With the development of scientific technology and the rapid expansion of information content, people have higher and higher requirements on the visual size of a display picture, but limited by the transmittance of projection equipment, a single projection equipment cannot present a large image picture, and multiple projection equipments are generally used for projection fusion to realize large-size projection. On the other hand, in outdoor or large-scale occasions, a projection picture with higher brightness is needed, the brightness of a single projection device is limited, and a corresponding overlapping technology occurs, namely, a plurality of projection devices project the same picture, the picture is completely overlapped after adjustment, and the picture brightness is the sum of the brightness of the plurality of projection devices. The superposition and fusion technology of the above projection needs to adjust the projection state of the projection image accurately, so that a better display effect is realized.
The inventors of the present application have found in long-term research and development that adjustment of the projection state of a projection image is currently achieved by adding a characteristic image to the projection image. However, in outdoor occasions and the like, when the brightness of ambient light is high, the ambient light has a great influence on the brightness of a projected image, and the visible brightness of the projected image is low, so that the projection equipment can be built only under the condition that the ambient light brightness is low, such as at night, in cloudy days, in a low-brightness closed environment, and the like, and the limitation is large.
Disclosure of Invention
The invention provides a projection device, a projection system and a projection method, and aims to solve the technical problem that in the prior art, the work of building a plurality of projection devices matched with each other outdoors can only be carried out under the condition of weak ambient light, and the limitation is large.
In order to solve the above technical problem, one technical solution adopted by the present invention is to provide a projection apparatus, including:
the invisible light source and the visible light source are respectively used for emitting invisible light and visible light, and paths of the invisible light and the visible light are partially overlapped;
the imaging device is arranged on the path of the invisible light source and is used for carrying out imaging processing on the invisible light to form an invisible light characteristic image;
the projection device is used for receiving the invisible light characteristic image and projecting the invisible light characteristic image to a projection plane to form a characteristic projection image; the projection plane is used for receiving the visible light, imaging the visible light to form a visible light image and projecting the visible light image to the projection plane;
the projection device is further used for receiving monitoring information of the characteristic projection image and adjusting the projection state of the visible light image on the projection plane based on the detection information.
In a specific embodiment, the projection apparatus further includes an optical path guiding device disposed on a path of the invisible light source and the visible light source, for guiding the invisible light characteristic image and the visible light to the projection device, respectively.
In a specific embodiment, the optical path directing device comprises a dichroic plate or a band pass filter plate.
In a specific embodiment, the imaging device comprises a non-visible light modulation device and an imaging lens assembly;
the invisible light modulation device is used for scanning the invisible light and emitting the scanned invisible light to the imaging lens assembly;
the imaging lens assembly receives the scanned invisible light and forms the invisible light characteristic image based on the scanned invisible light.
In a specific embodiment, the imaging lens assembly is an F-Theta imaging system.
In a specific embodiment, the projection device includes a DMD chip, and the DMD chip is configured to project the invisible light characteristic image to the projection plane, and modulate the visible light to form a visible light image and project the visible light image to the projection plane.
In a specific embodiment, the invisible light source is a single infrared light source, and the invisible light modulation device is a two-dimensional invisible light modulation device; or
The invisible light source is an infrared light source array, and the invisible light modulation device is a one-dimensional invisible light modulation device.
In order to solve the above technical problem, another technical solution of the present invention is to provide a projection system, which includes a monitoring device and the projection apparatus as described above, where the monitoring device is configured to collect and monitor the invisible light characteristic image formed by at least one set of the projection apparatus, so as to adjust a projection state of a projection image of visible light of the at least one set of the projection apparatus.
In a specific embodiment, the monitoring device includes an image capturing device and a display device, the image capturing device is configured to capture the invisible light characteristic image, and the display device is connected to the image capturing device and configured to display the invisible light characteristic image.
In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a projection method, including:
the invisible light source and the visible light source respectively emit invisible light and visible light;
the imaging device receives the invisible light to form an invisible light characteristic image and emits the invisible light characteristic image to the projection device;
the projection device projects the invisible light characteristic image to a projection plane to form a characteristic projection image, receives the visible light to form a visible light image and projects the visible light image to a projection screen; the projection state of the visible light image on the projection plane is adjusted by utilizing the received monitoring information of the characteristic projection image.
According to the invention, the invisible light source and the corresponding imaging device are added in the projection equipment to form the invisible light characteristic image in the projection image, so that the projection state adjustment of the projection image is not influenced by the external environment, the influence of the working environment on the adjustment of the projection state of the projection equipment is reduced, when a plurality of projection equipment are involved in the matched projection, the influence of the external environment on the construction of the plurality of mutually matched projection equipment can be reduced, and the overall working efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of a projection apparatus according to the present invention;
FIG. 3 is a schematic structural diagram of another embodiment of a projection apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of a projection apparatus according to the present invention;
FIG. 5 is a schematic view of a part of a projection apparatus in another embodiment of the projection apparatus of the present invention;
FIG. 6 is a schematic diagram of a projection system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another embodiment of a projection system according to the present invention;
FIG. 8 is a schematic view of a shingled projected image in another embodiment of the projection system of the present invention;
FIG. 9 is a schematic view of a fused projection image in another embodiment of the projection system of the present invention;
FIG. 10 is a schematic flow chart diagram illustrating an embodiment of a projection method according to the present invention;
fig. 11 is a schematic flow chart of another embodiment of the projection method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. While the term "and/or" is merely one type of association that describes an associated object, it means that there may be three types of relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Referring to fig. 1, an embodiment of a projection apparatus 10 of the present invention includes an invisible light source 110, a visible light source 120, an imaging device 200, and a projection device 300, where the invisible light source 110 and the visible light source 120 are respectively configured to emit invisible light and visible light, and paths of the invisible light and the visible light are partially overlapped; the imaging device 200 is arranged on the path of the invisible light source 110 and is used for imaging the invisible light to form an invisible light characteristic image; the projection device 300 receives the invisible light characteristic image formed by the imaging device 200 and projects the invisible light characteristic image to a projection plane to form a characteristic projection image; meanwhile, the projection device 300 is further configured to receive visible light, perform imaging processing on the received visible light to form a visible light image, and project the visible light image onto a projection plane. The invisible light characteristic image can be used as an adjustment mark of the projection state of the visible light image. The projection device 300 may receive monitoring information of a projection condition of the characteristic projection image, and adjust a projection state of the visible light image based on the monitoring information.
For example, the projection device 300 forms a characteristic projection image on the projection screen, and obtains a projection state of the characteristic projection image by a monitoring device that can monitor the characteristic projection image (the projection state may include a projection position, a projection size, a projection definition, and the like); therefore, the projection device 300 can adjust the projection state of the visible light image according to the monitoring information of the projection state of the received characteristic projection image. Taking the projection position as an example, the projection position of the projection screen of the projection apparatus 300 on the projection plane is difficult to determine in the initial state, at this time, the projection apparatus 300 forms a characteristic projection image formed by invisible light on the projection plane, further acquires monitoring information of the projection position of the characteristic projection image, and adjusts the position or the projection state of the projection apparatus 300 according to the monitoring information to adjust the projection of the characteristic projection image to the position a, at this time, it is equivalent to adjusting the projection state of the visible light image, and since the visible light image is also projected to the projection plane by the projection apparatus 300, it is possible to realize that the visible light image is also projected at the position a.
According to the embodiment of the invention, the invisible light source 110 and the corresponding imaging device 200 are added into the projection equipment 10 to form the invisible light characteristic image in the projection image, so that the projection state adjustment of the projection image is not influenced by the external environment, the influence of the working environment on the adjustment of the projection state of the projection equipment is reduced, when a plurality of projection equipment are matched for projection, the influence of the external environment on the building of the plurality of projection equipment matched with each other can be reduced, the overall working efficiency is improved, and the engineering period is shortened.
In the present embodiment, paths of the invisible light and the visible light after passing through the projection apparatus 300 are overlapped.
In this embodiment, the projection state of the projection image of the visible light on the projection plane is adjusted by using the characteristic projection image, specifically, the characteristic projection image may be set to a special shape, such as a cross shape, a triangle, and the like, and the position, the state, the projection focal length, and the like of the projection device are adjusted by using the projection state (the projection state may include a projection position, a projection size, a projection definition, and the like) of the acquired characteristic projection image with the special shape, so as to adjust the projection state of the visible light image projected by the projection device. When a plurality of projection devices are involved in matching projection, the characteristic projection images in at least two projection images are overlapped to realize projection state adjustment, so that projection images emitted by the plurality of projection devices 10 can be overlapped or fused to synthesize projection images with larger areas or higher brightness so as to adapt to different projection occasions.
Referring to fig. 2, further, the projection apparatus 300 may be connected to and controlled by an image input control apparatus 400, and the imaging apparatus 200 may be connected to and controlled by an imaging control apparatus 230; in the present embodiment, the imaging control device 230 sends an imaging control instruction to the imaging device 200 based on the preset image information, so that the imaging device 200 forms the invisible light feature image corresponding to the preset image information by using the invisible light based on the imaging control instruction. Further, the image input control device 400 sends a projection control instruction to the projection device 300 according to the preset image information, so that the projection device 300 projects the invisible light characteristic image to the projection plane based on the projection control instruction to form a characteristic projection image. Therefore, the invisible light is finally projected onto the projection plane through the imaging device and the projection device to form a characteristic projection image corresponding to the preset image information. The preset image information may be a triangle, a cross, or other image information having a figure easy to recognize. For example, the image input control device 400 sends a corresponding control instruction to the imaging control device 230 based on the preset image information of the cross to be formed, and the imaging control device 230 controls the imaging device 200 based on the control instruction, so that the imaging device 200 performs imaging processing on the invisible light to form the invisible light image of the cross corresponding to the preset image information; further, the image input control device 400 transmits a projection control instruction to the projection device 300 according to preset image information of a cross to be formed; when the imaging device 200 forms a cross-shaped invisible light image corresponding to the preset image information to be transmitted to the projection device 300, a cross-shaped characteristic projection image is finally projected on the projection plane based on the corresponding modulation.
In this embodiment, the image input control device 400 and/or the imaging control device 230 may be an internal control device built in the projection apparatus 10, or may be an external control device connected to the projection apparatus 10 through a communication control interface. In this embodiment, the imaging apparatus 200 includes an invisible light modulation apparatus 210 and an imaging lens assembly 220, the invisible light modulation apparatus 210 is configured to perform imaging modulation on invisible light and emit the image-modulated invisible light to the imaging lens assembly 220; the imaging lens assembly 220 receives the image modulated invisible light and forms an invisible light characteristic image based on the image modulated invisible light.
In this embodiment, the invisible light source 110 may be a single Infrared light source, such as a single IR LD (Infrared Laser diode), and correspondingly, the invisible light modulation device 210 is a two-dimensional invisible light modulation device, such as a two-dimensional galvanometer. The energy utilization rate of infrared light can be improved and energy consumption can be reduced by arranging the invisible light modulation device 210.
In other embodiments, the invisible light source 110 may also be an infrared light source array, such as a line array IR LD or a two-dimensional array IR LD, and the invisible light modulation device 210 may also be a single-dimensional invisible light modulation device. By providing the array type IR LD, the structure of the invisible light modulation device 210 can be made simpler, and the brightness of infrared light can be increased.
In this embodiment, the imaging lens assembly 220 may be an F-Theta (flat field focusing lens) imaging system. The F-Theta imaging system comprises a plurality of lenses, and the lenses are designed to have barrel-shaped distortion, so that the offset size generated by emergent rays and the offset angle of incident rays form a simple linear corresponding relation, complex electronic correction is not needed, tighter spot size can be realized, and the F-Theta imaging system is suitable for a rapid, miniaturized and relatively cheap scanning imaging device.
In the present embodiment, the visible light source 120 may be an RGB (Red Green Blue) light source.
Referring to fig. 3, in another specific embodiment, the projection apparatus 10 may further include an optical path directing device 500, and the optical path directing device 500 is disposed on the path of the invisible light source 110 and the visible light source 120, and is used for directing the invisible light characteristic image and the visible light to the projection device 300 respectively.
In the present embodiment, the paths of the invisible light and the visible light after passing through the optical path directing device 500 are overlapped.
In the present embodiment, the optical path directing device 500 includes a dichroic sheet, such as a dichroic sheet that is opaque to visible light and reflective to visible light. Referring to fig. 4, in other embodiments, the dichroic sheet may also be a dichroic sheet that is visible light transmissive and invisible light reflective, without limitation.
In other embodiments, the optical path directing device 500 may further include other components such as a band pass filter, etc. that can transmit one of visible light and invisible light and reflect the other, which is not limited herein.
In the present embodiment, the projection apparatus 300 includes a mirror assembly 310, an imaging lens 320 disposed on the mirror assembly 310, and a projection plane disposed opposite to the imaging lens 320, and the invisible light characteristic image and the visible light are projected to the projection plane through the mirror assembly 310 and the imaging lens 320 to form a projection image on the projection plane.
The mirror assembly 310 includes a DMD (Digital Micro-mirror Device) chip 311 and a TIR (Total Internal Reflection) prism assembly 312, where the DMD chip 311 is connected to the image input control Device 400, and is used to cooperate with the TIR prism assembly 312 to reflect the invisible light characteristic image and the visible light to the imaging lens 320. The DMD chip 311 is configured to project the invisible light characteristic image onto a projection plane, modulate the visible light to form a visible light image, and project the visible light image onto the projection plane. Further, the DMD chip 311 may be connected to and controlled by the image input control device 400, and projects the invisible light feature image onto the projection plane according to the projection control instruction, and modulates the visible light to form a visible light image and projects the visible light image onto the projection plane.
In this embodiment, the mirror assembly 310 may be a single DMD mirror assembly.
In other embodiments, the mirror assembly 310 may also be a multi-DMD mirror assembly, such as that shown in fig. 5, where the invisible light signature image and the visible light enter the TIR prism assembly 316 and pass through the blue DMD chip 313 and its corresponding TIR prism, such that the blue light is reflected and the yellow light is transmitted; then the green light is reflected and the red light is transmitted through the green light DMD chip 314 and the corresponding TIR prism thereof; and then the combined light is combined with blue light and green light by a red light DMD chip 315 and a corresponding TIR prism and then emitted to an imaging lens 320. In this embodiment, the wavelength of the infrared light is closer to the wavelength of the red light in the visible light, so the infrared light and the red light can share the same optical path.
Because the reflection of the internal mirror surface of the DMD mirror component has no direct relation with the wavelength and has extremely strong reflection capability on visible light and infrared light, the DMD mirror component is arranged in the embodiment, so that the influence on the reflection of the infrared light can be avoided, and the projection state can be adjusted through the characteristic image formed by the infrared light.
In the present embodiment, the TIR prism and the imaging lens 320 both have an infrared imaging function.
Referring to fig. 6, an embodiment of the projection system of the present invention includes a projection device 10 and a monitoring device 700, where the monitoring device 700 is configured to collect and monitor a characteristic image of invisible light formed by the projection device 10 to adjust a projection state of a projection image of visible light of the projection device 10. The structure of the projection apparatus 10 refers to the above embodiment of the projection apparatus 10, and is not described herein again.
In this embodiment, the monitoring device 700 includes an image capturing device 710 and a display device 720, the image capturing device 710 is used for capturing the invisible light characteristic image, and the display device 720 is connected to the image capturing device 710 and is used for displaying the invisible light characteristic image.
In this embodiment, the image capturing Device 710 may be an infrared CCD (Charge-coupled Device) camera, and the display Device 720 may be an infrared display Device.
Specifically, the image input control device 400 controls the invisible light modulation device 210 to scan the invisible light emitted by the invisible light source 110 through the scan control device 230 according to the characteristic image signal, so as to form an invisible light characteristic image through the imaging device 200, and then combines the invisible light with the visible light through the imaging lens assembly 220, and then the image input control device 400 controls the projection device 300 to form a characteristic projection image, so as to implement a Local Dimming function. The characteristic projection images are acquired by the monitoring device 700 to adjust the projection state of the projection images according to the characteristic images.
In this embodiment, the image input control device 400 may further regulate and control the DMD imaging according to different working modes, for example, when only the projection state of the projection image needs to be regulated and the normal projection image does not need to be displayed, only the invisible light may be regulated and controlled and the visible light may not be regulated and controlled, the projection state of the projection image may be regulated through the invisible light characteristic image formed by the invisible light, and the projection image may be displayed in black and white.
Referring to fig. 7, another embodiment of the projection system of the present invention includes at least two projection apparatuses 10 and a monitoring device 700. The structure of the projection apparatus 10 refers to the above embodiment of the projection apparatus 10, and is not described herein again. The monitoring device 700 is configured to acquire a feature projection image of the at least two projection images formed by the at least two projection apparatuses 10, and perform overlap-beating or fusion according to the feature projection image.
Referring to fig. 7 and 8 together, in an embodiment, the at least two projection devices include a first projection device 101 and a second projection device 102, the first projection device 101 is configured to form a first projected image 810, the first projected image 810 includes a first invisible light characteristic image 811; the second projection device 102 is configured to form a second projection image 820, the second projection image 820 includes a second invisible light characteristic image 821, and the first invisible light characteristic image 811 and the second invisible light characteristic image 821 are overlapped by positioning the first projection device 101 and the second projection device 102, so that the first projection image 810 and the second projection image 810 overlap to form a complete projection image 830.
Referring to fig. 7 and 9 together, in another embodiment, the at least two projection devices include a first projection device 101 and a second projection device 102, the first projection device 101 being configured to form a third projected image 840, the third projected image 840 including a third invisible light characteristic image 840; the second projection device 102 is used to form a fourth projection image 850, the fourth projection image 850 includes a fourth invisible light characteristic image 851, and the third invisible light characteristic image 841 and the fourth invisible light characteristic image 851 are overlapped by setting the positions of the first projection device 101 and the second projection device 102, so that the third projection image 840 and the fourth projection image 850 are fused to form a complete projection image 860.
In the above two embodiments, the invisible light characteristic image can be monitored according to the monitoring device 700, so as to adjust the position of the projection apparatus according to the invisible light characteristic image, so that the blending or superimposing effect is more accurate.
It can be understood that when a plurality of projection devices are provided, part of the projection devices in the plurality of projection devices can be fused, and part of the projection devices can be overlapped.
Referring to fig. 10, an embodiment of the projection method of the present invention includes:
s201, respectively emitting invisible light and visible light by an invisible light source and a visible light source;
s202, the imaging device receives the invisible light to form an invisible light characteristic image and emits the invisible light characteristic image to the projection device;
s203, the projection device projects the invisible light characteristic image to a projection plane to form a characteristic projection image, receives visible light to form a visible light image and projects the visible light image to a projection screen; and adjusting the projection state of the visible light image on the projection plane by utilizing the received monitoring information of the characteristic projection image.
The structure of the projection apparatus for implementing the projection method of the present invention refers to the above embodiment of the projection apparatus 10, and is not described herein again.
According to the embodiment of the invention, the invisible light source 110 and the corresponding imaging device 200 are added into the projection equipment 10 to form the invisible light characteristic image in the projection image, so that the projection state adjustment of the projection image is not influenced by the external environment, the influence of the working environment on the adjustment of the projection state of the projection equipment is reduced, when a plurality of projection equipment are matched for projection, the influence of the external environment on the building of the plurality of projection equipment matched with each other can be reduced, the overall working efficiency is improved, and the engineering period is shortened.
Referring to fig. 11, another embodiment of the projection method of the present invention comprises:
s301, respectively emitting invisible light and visible light by the invisible light source and the visible light source;
s302, the imaging device receives the invisible light to form an invisible light characteristic image and emits the invisible light characteristic image to the projection device;
s303, projecting the invisible light characteristic image to a projection plane by the projection device to form a characteristic projection image, receiving visible light to form a visible light image, and projecting the visible light image to a projection screen;
s304, the monitoring device collects and monitors the invisible light characteristic image so as to adjust the projection state of the visible light image on the projection plane by using the monitoring information of the received characteristic projection image.
The structure of the projection system for implementing the projection method of the present invention is described in the above embodiments of the projection system, and is not described herein again.
According to the embodiment of the invention, the invisible light source 110 and the corresponding imaging device 200 are added into the projection equipment 10 to form the invisible light characteristic image in the projection image, so that the projection state adjustment of the projection image is not influenced by the external environment, the influence of the working environment on the adjustment of the projection state of the projection equipment is reduced, when a plurality of projection equipment are matched for projection, the influence of the external environment on the building of the plurality of projection equipment matched with each other can be reduced, the overall working efficiency is improved, and the engineering period is shortened.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A projection device, comprising:
the invisible light source and the visible light source are respectively used for emitting invisible light and visible light, and paths of the invisible light and the visible light are partially overlapped;
the imaging device is arranged on the path of the invisible light source and is used for carrying out imaging processing on the invisible light to form an invisible light characteristic image;
the projection device is used for receiving the invisible light characteristic image and projecting the invisible light characteristic image to a projection plane to form a characteristic projection image; the projection plane is used for receiving the visible light, imaging the visible light to form a visible light image and projecting the visible light image to the projection plane;
the projection device is further used for receiving monitoring information of the characteristic projection image and adjusting the projection state of the visible light image on the projection plane based on the monitoring information.
2. The projection apparatus of claim 1, further comprising an optical path directing device disposed in a path of the invisible light source and the visible light source for directing the invisible light feature image and the visible light, respectively, to the projection device.
3. The projection device of claim 2, wherein the optical path directing means comprises a dichroic or band pass filter.
4. The projection apparatus of claim 1, wherein the imaging device comprises a non-visible light modulation device and an imaging lens assembly;
the invisible light modulation device is used for scanning the invisible light and emitting the scanned invisible light to the imaging lens assembly;
the imaging lens assembly receives the scanned invisible light and forms the invisible light characteristic image based on the scanned invisible light.
5. The projection device of claim 4, wherein the imaging lens assembly is an F-Theta imaging system.
6. The projection device of claim 1, wherein the projection device comprises a DMD chip configured to project the invisible light characteristic image onto the projection plane, and to modulate the visible light to form a visible light image and project the visible light image onto the projection plane.
7. The projection apparatus of claim 1, wherein the invisible light source is a single infrared light source, and the invisible light modulation device is a two-dimensional invisible light modulation device; or
The invisible light source is an infrared light source array, and the invisible light modulation device is a one-dimensional invisible light modulation device.
8. A projection system, comprising a monitoring device and a projection device as claimed in any one of claims 1 to 7, wherein the monitoring device is configured to collect and monitor the invisible light characteristic image formed by at least one set of the projection devices, so as to adjust the projection state of the projection image of the visible light of the at least one set of the projection devices.
9. The projection system of claim 8, wherein the monitoring device comprises an image capturing device and a display device, the image capturing device is configured to capture the invisible light characteristic image, and the display device is connected to the image capturing device and configured to display the invisible light characteristic image.
10. A method of projection, comprising:
the invisible light source and the visible light source respectively emit invisible light and visible light;
the imaging device receives the invisible light to form an invisible light characteristic image and emits the invisible light characteristic image to the projection device;
the projection device projects the invisible light characteristic image to a projection plane to form a characteristic projection image, receives the visible light to form a visible light image and projects the visible light image to a projection screen; the projection state of the visible light image on the projection plane is adjusted by utilizing the received monitoring information of the characteristic projection image.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102969.5A CN113281951A (en) | 2020-02-19 | 2020-02-19 | Projection equipment, projection system and projection method |
| PCT/CN2020/142117 WO2021164440A1 (en) | 2020-02-19 | 2020-12-31 | Projection device, projection system and projection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102969.5A CN113281951A (en) | 2020-02-19 | 2020-02-19 | Projection equipment, projection system and projection method |
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| CN113281951A true CN113281951A (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010102969.5A Pending CN113281951A (en) | 2020-02-19 | 2020-02-19 | Projection equipment, projection system and projection method |
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| Country | Link |
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| CN (1) | CN113281951A (en) |
| WO (1) | WO2021164440A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167668A (en) * | 2021-12-09 | 2022-03-11 | 深圳市火乐科技发展有限公司 | Ultra-short-focus projection equipment and light source device thereof |
| CN114979605A (en) * | 2022-07-27 | 2022-08-30 | 深圳市美特乐光电科技有限公司 | Projector for intelligent positioning correction and projection method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8282222B2 (en) * | 2007-10-10 | 2012-10-09 | Gerard Dirk Smits | Image projector with reflected light tracking |
| CN105308503A (en) * | 2013-03-15 | 2016-02-03 | 斯加勒宝展示技术有限公司 | System and method for calibrating a display system using a short throw camera |
| CN104076914B (en) * | 2013-03-28 | 2018-04-27 | 联想(北京)有限公司 | A kind of electronic equipment and method for displaying projection |
| CN105407344B (en) * | 2014-09-09 | 2019-03-29 | 深圳光峰科技股份有限公司 | The glasses of stereoscopic image projecting device and stereoscopic display |
| CN106371273B (en) * | 2015-07-20 | 2020-05-29 | 深圳光峰科技股份有限公司 | Mixed light source device, light-emitting control method thereof and projection system |
| CN106842784B (en) * | 2015-12-03 | 2019-04-26 | 深圳光峰科技股份有限公司 | A kind of optical projection system and projecting method |
-
2020
- 2020-02-19 CN CN202010102969.5A patent/CN113281951A/en active Pending
- 2020-12-31 WO PCT/CN2020/142117 patent/WO2021164440A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167668A (en) * | 2021-12-09 | 2022-03-11 | 深圳市火乐科技发展有限公司 | Ultra-short-focus projection equipment and light source device thereof |
| CN114167668B (en) * | 2021-12-09 | 2024-02-09 | 深圳市火乐科技发展有限公司 | Ultrashort-focus projection equipment and light source device thereof |
| CN114979605A (en) * | 2022-07-27 | 2022-08-30 | 深圳市美特乐光电科技有限公司 | Projector for intelligent positioning correction and projection method |
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| WO2021164440A1 (en) | 2021-08-26 |
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