WO2021164440A1 - 一种投影设备、投影系统及投影方法 - Google Patents

一种投影设备、投影系统及投影方法 Download PDF

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Publication number
WO2021164440A1
WO2021164440A1 PCT/CN2020/142117 CN2020142117W WO2021164440A1 WO 2021164440 A1 WO2021164440 A1 WO 2021164440A1 CN 2020142117 W CN2020142117 W CN 2020142117W WO 2021164440 A1 WO2021164440 A1 WO 2021164440A1
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Prior art keywords
projection
image
invisible light
visible light
light
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PCT/CN2020/142117
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English (en)
French (fr)
Inventor
张贤鹏
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深圳光峰科技股份有限公司
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Publication of WO2021164440A1 publication Critical patent/WO2021164440A1/zh

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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
    • 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
    • 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
    • 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
    • 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
    • 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]
    • 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

Definitions

  • the invention relates to the field of projection technology, in particular to a projection device, a projection system and a projection method.
  • a single projection device cannot present a larger image screen.
  • Use multiple projection devices for projection fusion to achieve large-size projection on the other hand, in outdoor or large-scale occasions, a higher-brightness projection screen is required.
  • the brightness of a single projection device is limited.
  • the corresponding overlay technology appears, that is, multiple projection devices project the same screen, and the screens are completely overlapped after adjustment.
  • the screen brightness is the sum of the brightness of multiple projection devices.
  • the above projection overlay and fusion technology all require precise adjustment of the projection state of the projected image to achieve a better display effect.
  • the inventor of the present application has discovered that at present, by adding characteristic images to the projected image, the adjustment of the projection state of the projected image is realized.
  • the ambient light will have a greater impact on the brightness of the projected image, resulting in lower visible brightness of the projected image. Therefore, it is generally only possible to choose at night, cloudy,
  • the construction of the projection equipment under the condition of low ambient light brightness such as a closed environment with low brightness has great limitations.
  • the present invention provides a projection device, a projection system and a projection method, so as to solve the problem that in the prior art, the work of setting up a plurality of coordinated projection devices outdoors can only be carried out under the condition of weak ambient light, which is a technology with greater limitations problem.
  • a technical solution adopted by the present invention is to provide a projection device, including:
  • the invisible light source and the visible light source are respectively used to emit invisible light and visible light, and the paths of the invisible light and the visible light partially overlap;
  • An imaging device arranged on the path of the invisible light source, for imaging the invisible light to form an invisible light characteristic image
  • a projection device for receiving the invisible light characteristic image and projecting the invisible light characteristic image to a projection plane to form a characteristic projection image; and also for receiving the visible light and performing imaging processing on the visible light to form a visible light image And project to the projection plane;
  • the projection device is further configured to receive monitoring information of the characteristic projection image, and adjust the projection state of the visible light image on the projection plane based on the detection information.
  • the projection device further includes a light path guiding device, the light path guiding device is arranged on the path of the invisible light source and the visible light source, and is used to separately combine the invisible light characteristic image and the visible light source.
  • the visible light is guided to the projection device.
  • the light path guiding device includes a dichroic film or a band-pass filter.
  • the imaging device includes an invisible light modulation device and an imaging lens assembly
  • the invisible light modulation device is used to scan the invisible light, and emit 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.
  • the imaging lens assembly is an F-Theta imaging system.
  • the projection device includes a DMD chip, and the DMD chip is used to project the invisible light characteristic image onto the projection plane, and modulate the visible light to form a visible light image, and the visible light The image is projected onto the projection plane.
  • the invisible light source is a single infrared light source
  • the invisible light modulation device is a two-dimensional invisible light modulation device
  • the invisible light source is an infrared light source array
  • the invisible light modulation device is a one-dimensional invisible light modulation device.
  • another technical solution adopted by the present invention is to provide a projection system, including a monitoring device and the above-mentioned projection equipment.
  • the visible light characteristic image is collected and monitored to realize the adjustment of the projection state of the visible light projection image of the at least one set of the projection device.
  • the monitoring device includes an image capture device and a display device, the image capture device is used to capture the invisible light characteristic image, and the display device is connected to the image capture device for displaying all the images. Describe the invisible light characteristic image.
  • a projection method including:
  • the invisible light source and the visible light source emit invisible light and visible light respectively;
  • the imaging device receives the invisible light to form an invisible light characteristic image, and emits it to the projection device;
  • the projection device projects the invisible light characteristic image onto a projection plane to form a characteristic projection image, receives the visible light to form a visible light image and projects it onto a projection screen; and uses the received monitoring information of the characteristic projection image to project the projection image.
  • the visible light image on the plane adjusts the projection state.
  • the present invention adds an invisible light source and a corresponding imaging device to the projection equipment to form an invisible light characteristic image in the projected image, so that the projection state of the projected image can be adjusted without being affected by the external environment, so as to reduce the impact of the working environment on the projection.
  • the influence of the adjustment of the projection state of the device, when multiple projection devices are involved in the projection can reduce the influence of the external environment on the construction of multiple projection devices that cooperate with each other, and improve the overall work efficiency.
  • Fig. 1 is a schematic structural diagram of an embodiment of a projection device of the present invention
  • FIG. 2 is a schematic structural diagram of another embodiment of the projection device of the present invention.
  • Fig. 3 is a schematic structural diagram of another embodiment of the projection device of the present invention.
  • FIG. 4 is a schematic structural diagram of another embodiment of the projection device of the present invention.
  • FIG. 5 is a schematic diagram of a part of the structure of a projection device in another embodiment of the projection device of the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of the projection system of the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of the projection system of the present invention.
  • FIG. 8 is a schematic diagram of overlaying a projected image in another embodiment of the projection system of the present invention.
  • FIG. 9 is a schematic diagram of fused projection images in another embodiment of the projection system of the present invention.
  • FIG. 10 is a schematic flowchart of an embodiment of the projection method of the present invention.
  • FIG. 11 is a schematic flowchart of another embodiment of the projection method of the present invention.
  • first and second in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
  • a plurality of means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “including” and “having” and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.
  • an embodiment of the projection device 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.
  • the invisible light source 110 and the visible light source 120 are used to emit invisible light and visible light, respectively.
  • the paths of visible light partially overlap;
  • the imaging device 200 is arranged on the path of the invisible light source 110 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 combines
  • the invisible light characteristic image is projected onto the projection plane to form a characteristic projection image; at the same time, the projection device 300 is also used to receive visible light, and perform imaging processing on the received visible light to form a visible light image and project it onto the projection plane.
  • the invisible light characteristic image can be used as an adjustment indicator of the projection state of the visible light image.
  • the projection device 300 may receive monitoring information on the projection condition of the characteristic projection image, and adjust the projection state of the visible light image based on the monitoring information.
  • the projection device 300 forms a characteristic projection image on the projection screen, and obtains the projection state of the characteristic projection image through a monitoring device that can monitor the characteristic projection image (the projection state may include projection position, projection size, projection definition, etc.); Therefore, the projection device 300 can adjust the projection state of the visible light image according to the received monitoring information of the projection state of the characteristic projection image.
  • the projection position as an example, in the initial state of the projection device 300, the projection position of the projection screen on the projection plane is difficult to determine.
  • the projection device 300 forms a characteristic projection image formed by invisible light on the projection plane, and further obtains a characteristic projection image.
  • the position or projection state of the projection device 300 is adjusted according to the monitoring information to adjust the characteristic projection image to the position A. At this time, it is equivalent to adjusting the projection state of the visible light image. It is also projected onto the projection plane by the projection device 300, so that the visible light image is also projected at the A position.
  • the invisible light source 110 and the corresponding imaging device 200 are added to the projection device 10 to form an invisible light characteristic image in the projected image, so that the projection state of the projected image can be adjusted without being affected by the external environment to reduce
  • the influence of a small working environment on the adjustment of the projection state of the projection equipment, when multiple projection equipment is involved in the projection can reduce the influence of the external environment on the construction of multiple projection equipment that cooperate with each other, improve the overall work efficiency, and shorten the project cycle .
  • the paths of the invisible light and the visible light after passing through the projection device 300 overlap.
  • the characteristic projection image is used to adjust the projection state of the visible light projected image on the projection plane.
  • the characteristic projection image can be set to a special shape, such as a cross, a triangle, etc.
  • the projection state of the projection image with the characteristics of the special shape can include the projection position, projection size, projection definition, etc.
  • the projection state can include the projection position, projection size, projection definition, etc.
  • adjust the position, state, and projection focal length of the projection device adjust the visible light image projected by the projection device
  • the projection status When multiple projection devices are involved in coordinated projection, the characteristic projection images in at least two projection images are overlapped to adjust the projection state, so that the projection images emitted by the multiple projection devices 10 can be overlapped or merged to synthesize a larger area. Larger or brighter projected image to adapt to different projection occasions.
  • the projection device 300 can be connected to and controlled by an image input control device 400, and the imaging device 200 can be connected and controlled by an imaging control device 230; in this embodiment, the imaging control device 230 is based on a preset
  • the image information sends an imaging control instruction to the imaging device 200, so that the imaging device 200 uses invisible light to form an invisible light characteristic image corresponding to the preset image information based on the imaging control instruction.
  • the image input control device 400 sends a projection control instruction to the projection device 300 according to preset image information, so that the projection device 300 projects the invisible light characteristic image to a projection plane based on the projection control instruction to form a characteristic projection image.
  • 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 with graphics that are easy to recognize.
  • 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 shape 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 can
  • the invisible light performs imaging processing to form a cross-shaped invisible light image corresponding to the preset image information; further, the image input control device 400 sends a projection control instruction to the projection device 300 according to the preset image information of the cross-shaped to be formed;
  • the cross-shaped characteristic projection image is finally projected on the projection plane based on the corresponding modulation.
  • the image input control device 400 and/or the imaging control device 230 may be an internal control device built in the projection device 10, or may be an external control device connected to the projection device 10 through a communication control interface.
  • the imaging device 200 includes an invisible light modulating device 210 and an imaging lens assembly 220.
  • the invisible light modulating device 210 is used for imaging and modulating the invisible light, and emitting the imaging modulated invisible light to the imaging lens assembly 220;
  • the lens assembly 220 receives the invisible light after imaging modulation, and forms an invisible light characteristic image based on the invisible light after imaging modulation.
  • the invisible light source 110 may be a single infrared light source, such as a single IR LD (Infrared Radiation Laser diode, infrared laser diode).
  • the invisible light modulation device 210 is a two-dimensional invisible light modulation device, such as Two-dimensional galvanometer, etc. By providing the invisible light modulation device 210, the energy utilization rate of the infrared light can be improved, and the energy consumption can be reduced.
  • the invisible light source 110 may also be an infrared light source array, such as a line array type IR LD or a two-dimensional array type IR LD, and the invisible light modulation device 210 may also be a single-dimensional invisible light modulation device.
  • the array type IR LD the structure of the invisible light modulation device 210 can be made simpler, and the brightness of the infrared light can be increased.
  • the imaging lens assembly 220 may be an F-Theta (Flat Field Focusing Lens) imaging system.
  • the F-Theta imaging system includes multiple lenses, and the design of multiple lenses has barrel distortion, so that the deviation of the emitted light and the deviation angle of the incident light form a simple linear correspondence, which does not require complex electronic correction , Can achieve a tighter spot size, which can be applied to a fast, small and relatively inexpensive scanning imaging device.
  • the visible light source 120 may be an RGB (Red Green Blue) light source.
  • the projection device 10 may further include a light path guiding device 500, which is arranged on the path of the invisible light source 110 and the visible light source 120, and is used to combine the invisible light characteristic image and the visible light source 120 respectively.
  • the visible light is guided to the projection device 300.
  • the paths of the invisible light and the visible light after passing through the light path guiding device 500 overlap.
  • the light path guiding device 500 includes a dichroic film, such as a dichroic film that transmits invisible light and reflects visible light.
  • a dichroic film such as a dichroic film that transmits invisible light and reflects visible light.
  • the dichroic film may also be a dichroic film that transmits visible light and reflects invisible light, which is not limited here.
  • the light path guiding device 500 may further include other components such as a bandpass filter that can transmit one of visible light and invisible light and reflect the other, which is not limited herein.
  • the projection device 300 includes a mirror assembly 310, an imaging lens 320 disposed on the mirror assembly 310, and a projection plane set relative to the imaging lens 320, and the invisible light characteristic image and visible light pass through the mirror assembly 310 and the imaging lens. 320 is projected onto the projection plane to form a projected 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.
  • the DMD chip 311 is connected to the image input control device 400 for It cooperates with the TIR prism assembly 312 to reflect the invisible light characteristic image and visible light to the imaging lens 320.
  • the DMD chip 311 is used to project the invisible light characteristic image to the projection plane, to modulate the visible light to form a visible light image, and to project the visible light image to the projection plane.
  • the DMD chip 311 can be connected to and controlled by the image input control device 400, and project the invisible light characteristic image to the projection plane according to the projection control instruction, and modulate the visible light to form a visible light image and project the visible light image to the projection plane.
  • the mirror assembly 310 may be a single DMD mirror assembly.
  • the mirror assembly 310 can also be a multi-DMD mirror assembly.
  • Blue light is reflected and yellow light is transmitted; then green light is reflected and red light is transmitted through the green DMD chip 314 and its corresponding TIR prism; and then the red light DMD chip 315 and its corresponding TIR prism are combined with blue and green light Then, it exits to the imaging lens 320.
  • the wavelength of the infrared light in this embodiment is relatively close to the wavelength of the red light in the visible light, the infrared light and the red light can share the same optical path.
  • the reflection of the internal mirror surface of the DMD mirror assembly has no direct relationship with the wavelength, it has extremely strong reflection ability for both visible light and infrared light. Therefore, by providing the DMD mirror assembly in this embodiment, the reflection of infrared light can be avoided. Therefore, the projection state can be adjusted by the characteristic image formed by infrared light.
  • both the TIR prism and the imaging lens 320 have infrared imaging functions.
  • an embodiment of the projection system of the present invention includes a projection device 10 and a monitoring device 700.
  • the monitoring device 700 is used to collect and monitor the invisible light characteristic image formed by the projection device 10 to realize the visible light projection image of the projection device 10 Adjust the projection status.
  • the structure of the projection device 10 refer to the foregoing embodiment of the projection device 10, which will not be repeated here.
  • the monitoring device 700 includes an image capture device 710 and a display device 720.
  • the image capture device 710 is used to capture an invisible light characteristic image
  • the display device 720 is connected to the image capture device 710 and is used to display an invisible light characteristic image.
  • the image acquisition device 710 may be an infrared CCD (Charge-coupled Device) camera
  • the display device 720 may be an infrared display device.
  • CCD Charge-coupled Device
  • the image input control device 400 controls the invisible light modulation device 210 through the scanning control device 230 to scan the invisible light emitted by the invisible light source 110 according to the characteristic image signal, so as to form an invisible light characteristic image through the imaging device 200. 220 is combined with visible light, and then the projection device 300 is controlled by the image input control device 400 to form a characteristic projection image, so as to realize the local dimming function.
  • the characteristic projection image is collected by the monitoring device 700 to adjust the projection state of the projection image according to the characteristic image.
  • the image input control device 400 can also adjust DMD imaging according to different working modes. For example, when only the projection state of the projected image needs to be adjusted without displaying the normal projected image, it can only be Visible light is regulated instead of visible light, and the projection state of the projected image is adjusted through the invisible light characteristic image formed by the invisible light, and the projected image can be displayed in black and white and other effects.
  • another embodiment of the projection system of the present invention includes at least two projection devices 10 and a monitoring device 700.
  • the monitoring device 700 is used to collect feature projection images in at least two projection images formed by at least two projection devices 10, and perform overlay or fusion according to the feature projection images.
  • At least two projection devices include a first projection device 101 and a second projection device 102.
  • the first projection device 101 is used to form a first projection image 810
  • the first projection device 101 is used to form a first projection image 810.
  • the image 810 includes a first invisible light characteristic image 811
  • the second projection device 102 is used to form a second projection image 820
  • the second projection image 820 includes a second invisible light characteristic image 821.
  • the position of the device 102 is such that the first invisible light characteristic image 811 and the second invisible light characteristic image 821 overlap, so that the first projected image 810 and the second projected image 810 are superimposed to form a complete projected image 830.
  • At least two projection devices include a first projection device 101 and a second projection device 102, the first projection device 101 is used to form a third projection image 840, and the third projection device
  • the projection image 840 includes a third invisible light characteristic image 840;
  • the second projection device 102 is used to form a fourth projection image 850, and
  • the fourth projection image 850 includes a fourth invisible light characteristic image 851.
  • the position of the projection device 102 makes the third invisible light characteristic image 841 and the fourth invisible light characteristic image 851 overlap, so that the third projected image 840 and the fourth projected image 850 are fused to form a complete projected image 860.
  • the invisible light characteristic image can be monitored according to the monitoring device 700, so as to adjust the position of the projection device according to the invisible light characteristic image, so that the fusion or overlay effect is more accurate.
  • an embodiment of the projection method of the present invention includes:
  • the invisible light source and the visible light source emit invisible light and visible light respectively;
  • the imaging device receives invisible light to form an invisible light characteristic image, and emits it to the projection device;
  • the projection device projects the invisible light characteristic image onto the projection plane to form a characteristic projection image, receives visible light to form a visible light image and projects it onto the projection screen; and uses the received monitoring information of the characteristic projection image to project the visible light image on the projection plane. ⁇ The adjustment.
  • the invisible light source 110 and the corresponding imaging device 200 are added to the projection device 10 to form an invisible light characteristic image in the projected image, so that the projection state of the projected image can be adjusted without being affected by the external environment to reduce
  • the influence of a small working environment on the adjustment of the projection state of the projection equipment, when multiple projection equipment is involved in the projection can reduce the influence of the external environment on the construction of multiple projection equipment that cooperate with each other, improve the overall work efficiency, and shorten the project cycle .
  • another embodiment of the projection method of the present invention includes:
  • the invisible light source and the visible light source emit invisible light and visible light respectively;
  • the imaging device receives the invisible light to form an invisible light characteristic image, and emits it to the projection device;
  • the projection device projects the invisible light characteristic image onto the projection plane to form a characteristic projection image, receives visible light to form a visible light image and projects it onto the projection screen;
  • the monitoring device collects and monitors the invisible light characteristic image, so as to use the received monitoring information of the characteristic projection image to adjust the projection state of the visible light image on the projection plane.
  • the invisible light source 110 and the corresponding imaging device 200 are added to the projection device 10 to form an invisible light characteristic image in the projected image, so that the projection state of the projected image can be adjusted without being affected by the external environment to reduce
  • the influence of a small working environment on the adjustment of the projection state of the projection equipment, when multiple projection equipment is involved in the projection can reduce the influence of the external environment on the construction of multiple projection equipment that cooperate with each other, improve the overall work efficiency, and shorten the project cycle .

Abstract

一种投影设备（10）、投影系统及投影方法，投影设备（10）包括不可见光光源（110）及可见光光源（120）、成像装置（200）以及投影装置（300），成像装置（200）设置在不可见光光源（110）的路径上，用于对不可见光进行成像处理以形成不可见光特征图像；投影装置（300）用于接收不可见光特征图像，并将不可见光特征图像投影至投影平面以形成特征投影图像；还用于形成可见光图像并投影至投影平面；还用于接收特征投影图像的监测信息，对投影平面上的可见光图像的投影状态调节。投影图像的投影状态的调节不受外界环境的影响，以减小工作环境对投影设备（10）的投影状态的调节的影响，当涉及多台投影设备（10）配合投影时，可减小外界环境对相互配合的多台投影设备（10）的搭建，提高整体工作效率。

Description

一种投影设备、投影系统及投影方法 技术领域
本发明涉及投影技术领域，特别涉及一种投影设备、投影系统及投影方法。
背景技术
随着科学技术的发展以及信息量的急速膨胀，人们对显示画面的可视尺寸的要求越来越高，但受限于投影设备的透射比，单个投影设备无法呈现较大的图像画面，通常使用多台投影设备进行投影融合以实现大尺寸投影。另一方面，在户外或大型场合中，需要较高亮度的投影画面，单个投影设备的亮度有限，相应的出现叠打技术，即多台投影设备投影相同的画面，调解后使得画面完全重合，画面亮度为多台投影设备的亮度总和。以上投影的叠打和融合技术都需要对投影图像进行精准的投影状态的调节，从而实现较好的显示效果。
本申请的发明人在长期的研发中发现，目前通过在投影图像中加入特征图像，以实现对投影图像的投影状态的调节。但是在户外场合等，当周围环境光的亮度较高时，环境光对投影图像的亮度会有较大的影响，导致投影图像的可见亮度较低，因此一般只能选择在晚上、阴天、低亮度的封闭环境等环境光亮度较低的情况下进行投影设备的搭建，局限性较大。
发明内容
本发明提供一种投影设备、投影系统及投影方法，以解决现有技术中在户外搭建相互配合的多台投影设备的工作只能在环境光较弱的情况下进行，局限性较大的技术问题。
为解决上述技术问题，本发明采用的一个技术方案是提供一种投影 设备，包括：
不可见光光源及可见光光源，分别用于出射不可见光和可见光，所述不可见光和所述可见光的路径部分重叠；
成像装置，设置在所述不可见光光源的路径上，用于对所述不可见光进行成像处理以形成不可见光特征图像；
投影装置，用于接收所述不可见光特征图像，并将所述不可见光特征图像投影至投影平面以形成特征投影图像；还用于接收所述可见光，对所述可见光进行成像处理以形成可见光图像并投影至所述投影平面；
所述投影装置还用于接收所述特征投影图像的监测信息，基于所述检测信息调节所述投影平面上的所述可见光图像的投影状态。
在一具体实施例中，所述投影设备还包括光路引导装置，所述光路引导装置设置在所述不可见光光源和所述可见光光源的路径上，用于分别将所述不可见光特征图像和所述可见光引导至所述投影装置。
在一具体实施例中，所述光路引导装置包括二向色片或带通滤波片。
在一具体实施例中，所述成像装置包括不可见光调制装置和成像透镜组件；
所述不可见光调制装置用于对所述不可见光进行扫描，并向所述成像透镜组件出射扫描后的不可见光；
所述成像透镜组件接收所述扫描后的不可见光，并基于所述扫描后的不可见光形成所述不可见光特征图像。
在一具体实施例中，所述成像透镜组件为F-Theta成像系统。
在一具体实施例中，所述投影装置包括DMD芯片，所述DMD芯片用于将所述不可见光特征图像投影至所述投影平面，以及对所述可见光进行调制形成可见光图像并将所述可见光图像投影至所述投影平面。
在一具体实施例中，所述不可见光光源为单颗红外光源，所述不可见光调制装置为二维不可见光调制装置；或
所述不可见光光源为红外光源阵列，所述不可见光调制装置为一维不可见光调制装置。
为解决上述技术问题，本发明采用的另一个技术方案是提供一种投影系统，包括监测装置及如上述的投影设备，所述监测装置用于对至少一组所述投影设备形成的所述不可见光特征图像进行采集和监测，以实现对所述至少一组所述投影设备的可见光的投影图像进行投影状态的调节。
在一具体实施例中，所述监测装置包括图像采集装置及显示装置，所述图像采集装置用于采集所述不可见光特征图像，所述显示装置与所述图像采集装置连接，用于显示所述不可见光特征图像。
为解决上述技术问题，本发明采用的另一个技术方案是提供一种投影方法，包括：
不可见光光源及可见光光源分别出射不可见光和可见光；
成像装置接收所述不可见光以形成不可见光特征图像，并出射至投影装置；
所述投影装置将所述不可见光特征图像投影至投影平面形成特征投影图像，接收所述可见光形成可见光图像并投影至投影屏幕；以利用接收到的所述特征投影图像的监测信息对所述投影平面上的所述可见光图像进行投影状态的调节。
本发明通过在投影设备中加入不可见光光源及相应的成像装置，以在投影图像中形成不可见光特征图像，能够使得投影图像的投影状态调节不受外界环境的影响，以减小工作环境对投影设备的投影状态的调节的影响，当涉及多台投影设备配合投影时，可减小外界环境对相互配合的多台投影设备的搭建的影响，提高整体工作效率。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图，其中：
图1是本发明投影设备一实施例的结构示意图；
图2是本发明投影设备另一实施例的结构示意图；
图3是本发明投影设备另一实施例的结构示意图；
图4是本发明投影设备另一实施例的结构示意图；
图5是本发明投影设备另一实施例中投影装置的部分结构示意图；
图6是本发明投影系统一实施例的结构示意图；
图7是本发明投影系统另一实施例的结构示意图；
图8是本发明投影系统另一实施例中叠打投影图像的示意图；
图9是本发明投影系统另一实施例中融合投影图像的示意图；
图10是本发明投影方法一实施例的流程示意图；
图11是本发明投影方法另一实施例的流程示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，均属于本发明保护的范围。
本申请中的术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。而术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
参见图1，本发明投影设备10一实施例包括不可见光光源110、可 见光光源120、成像装置200以及投影装置300，不可见光光源110及可见光光源120分别用于出射不可见光和可见光，不可见光和可见光的路径部分重叠；成像装置200设置在不可见光光源110的路径上，用于对不可见光进行成像处理以形成不可见光特征图像；投影装置300接收成像装置200形成的不可见光特征图像，并将不可见光特征图像投影至投影平面以形成特征投影图像；同时，投影装置300还用于接收可见光，对接收的可见光进行成像处理以形成可见光图像并投影至投影平面。不可见光特征图像可作为可见光图像的投影状态的调节标识。投影装置300可接收对特征投影图像的投影情况的监测信息，基于该监测信息调节可见光图像的投影状态。
例如，投影装置300在投影屏幕形成特征投影图像，通过可对特征投影图像进行监测的监测装置以获取特征投影图像的投影状态(投影状态可包括投影位置、投影大小、投影清晰度等)；由此，投影装置300即可根据接收到的特征投影图像的投影状态的监测信息调节其对可见光图像的投影状态的进行调节。以投影位置举例，投影装置300在初始状态中其投影画面在投影平面上的投影位置难以确定，此时，投影装置300在投影平面上形成不可见光形成的特征投影图像，进一步获取对特征投影图像的投影位置的监测信息，根据该监测信息调节投影装置300的位置或投影状态以调整至特征投影图像投影至A位置处，此时，即相当于对可见光图像的投影状态进行调节，由于可见光图像也是被投影装置300投影至投影平面，即可实现令可见光图像也在A位置处投影。
本发明实施例通过在投影设备10中加入不可见光光源110及相应的成像装置200，以在投影图像中形成不可见光特征图像，能够使得投影图像的投影状态调节不受外界环境的影响，以减小工作环境对投影设备的投影状态的调节的影响，当涉及多台投影设备配合投影时，可减小外界环境对相互配合的多台投影设备的搭建的影响，提高整体工作效率，缩短工程周期。
在本实施例中，不可见光和可见光在经过投影装置300后的路径是重叠的。
在本实施例中，利用特征投影图像对可见光在投影平面上的投影图像进行投影状态的调节，具体可以为将特征投影图像设置为特殊的形状，例如十字形、三角形等，通过获取到的具有特殊的形状的特征投影图像的投影状态(投影状态可包括投影位置、投影大小、投影清晰度等)，对投影设备的位置、状态、投影焦距等进行调节，进而调节有投影设备投影的可见光图像的投影状态。当涉及多个投影设备配合投影时，使得至少两幅投影图像中的特征投影图像重叠以实现投影状态调节，从而能够对多个投影设备10出射的投影图像进行叠打或融合，以合成面积更大或者亮度更高的投影图像，以适应不同放映场合。
参见图2，进一步的，投影装置300可连接并受控于一图像输入控制装置400，成像装置200可连接并受控于一成像控制装置230；本实施例中，成像控制装置230基于预设图像信息向成像装置200发送成像控制指令，以使像装置200基于成像控制指令利用不可见光形成与预设图像信息对应的不可见光特征图像。进一步，图像输入控制装置400根据预设图像信息向投影装置300发送投影控制指令，以使投影装置300基于所述投影控制指令将所述不可见光特征图像投影至投影平面以形成特征投影图像。由此，不可见光通过成像装置和投影装置最终投影至投影平面上形成与该预设图像信息对应的特征投影图像。预设图像信息可为三角形、十字形或其他具有便于识别的图形的图像信息。例如，图像输入控制装置400基于要形成的十字形的预设图像信息向控制成像控制装置230发送相应的控制指令，成像控制装置230即基于该控制指令控制成像装置200，以使成像装置200对不可见光进行成像处理，形成与预设图像信息对应的十字形的不可见光图像；进一步，图像输入控制装置400根据要形成的十字形的预设图像信息向投影装置300发送投影控制指令；当成像装置200形成与预设图像信息对应的十字形的不可见光图像被传输到投影装置300时，基于对应的调制最终在投影平面投影出十字形的特征投影图像。
本实施例中，图像输入控制装置400和/或成像控制装置230可为投影设备10中内置的内部控制装置，也可以是投影设备10通过通信控制 接口连接的外部控制装置。在本实施例中，成像装置200包括不可见光调制装置210和成像透镜组件220，不可见光调制装置210用于对不可见光进行成像调制，并向成像透镜组件220出射成像调制后的不可见光；成像透镜组件220接收成像调制后的不可见光，并基于成像调制后的不可见光形成不可见光特征图像。
在本实施例中，不可见光光源110可以为单颗红外光源，例如单颗IR LD(Infrared Radiation Laser diode，红外线激光二极管)，相应的，不可见光调制装置210为二维不可见光调制装置，例如二维振镜等。通过设置不可见光调制装置210能够提升红外光的能量利用率，降低能耗。
在其他实施例中，不可见光光源110还可以为红外光源阵列，例如线阵列式IR LD或二维阵列式IR LD，不可见光调制装置210还可以为单维不可见光调制装置。通过设置阵列式IR LD，能够使得不可见光调制装置210的结构更加简单，并且能够增加红外光的亮度。
在本实施例中，成像透镜组件220可以为F-Theta(平场聚焦透镜)成像系统。F-Theta成像系统包括多个镜片，且多个镜片的设计具有桶形畸变，使得出射光线产生的偏移大小与入射光线的偏移角形成简单的线性对应关系，其不需要复杂的电子矫正，能够实现更加紧密的光斑尺寸，从而能够适用于快速、小型化且相对廉价的扫描成像装置。
在本实施例中，可见光源120可以为RGB(Red Green Blue，红绿蓝)光源。
参见图3，在另一具体实施例中，投影设备10还可以包括光路引导装置500，光路引导装置500设置在不可见光光源110和可见光光源120的路径上，用于分别将不可见光特征图像和可见光引导至投影装置300。
在本实施例中，不可见光和可见光在经过光路引导装置500后的路径是重叠的。
在本实施例中，光路引导装置500包括二向色片，例如不可见光透射且可见光反射的二向色片。参见图4，在其他实施例中，二向色片还可以为可见光透射且不可见光反射的二向色片，在此不做限制。
在其他实施例中，光路引导装置500还可以包括带通滤波片等其他 可以让可见光和不可见光中的一者透射，另一者反射的部件，在此不做限制。
在本实施例中，投影装置300包括反射镜组件310、设置于反射镜组件310上的成像镜头320以及相对成像镜头320设置的投影平面，不可见光特征图像和可见光经反射镜组件310及成像镜头320投影至投影平面，以在投影平面上形成投影图像。
其中，反射镜组件310包括DMD(Digital Micro-mirror Device，数字微镜器件)芯片311及TIR(Total Internal Reflection，全内反射)棱镜组件312，DMD芯片311与图像输入控制装置400连接，用于与TIR棱镜组件312配合，以将不可见光特征图像和可见光反射至成像镜头320。其中，DMD芯片311用于将不可见光特征图像投影至投影平面，以及对可见光进行调制形成可见光图像并将可见光图像投影至投影平面。进一步，DMD芯片311可连接并受控于图像输入控制装置400，据投影控制指令将不可见光特征图像投影至投影平面，以及对可见光进行调制形成可见光图像并将可见光图像投影至投影平面。
在本实施例中，反射镜组件310可以为单DMD反射镜组件。
在其他实施例中，反射镜组件310还可以为多DMD反射镜组件，例如图5所示，不可见光特征图像和可见光进入TIR棱镜组件316，经蓝光DMD芯片313及其对应的TIR棱镜，使得蓝光反射，黄光透射；再经绿光DMD芯片314及其对应的TIR棱镜，使得绿光反射，红光透射；再经红光DMD芯片315及其对应的TIR棱镜，与蓝光和绿光合并后出射至成像镜头320。其中，由于本实施例中的红外光的波长与可见光中的红光的波长较为接近，因此红外光与红光可共用同一光路。
由于DMD反射镜组件内部镜面的反射与波长无直接关系，对于可见光及红外光都具有极强的反射能力，因此通过在本实施例中设置DMD反射镜组件，能够避免红外光的反射受影响，从而能够通过红外光形成的特征图像进行投影状态调节。
在本实施例中，TIR棱镜及成像镜头320都具有红外成像功能。
参见图6，本发明投影系统一实施例包括投影设备10及监测装置 700，监测装置700用于对投影设备10形成的不可见光特征图像进行采集、监测以实现对投影设备10的可见光的投影图像进行投影状态的调节。其中，投影设备10的结构参见上述投影设备10实施例，在此不再赘述。
在本实施例中，监测装置700包括图像采集装置710及显示装置720，图像采集装置710用于采集不可见光特征图像，显示装置720与图像采集装置710连接，用于显示不可见光特征图像。
在本实施例中，图像采集装置710可以为红外CCD(Charge-coupled Device，电荷耦合元件)相机，显示装置720可以为红外显示装置。
具体的，图像输入控制装置400根据特征图像信号通过扫描控制装置230控制不可见光调制装置210对不可见光源110发射的不可见光进行扫描，以通过成像装置200形成不可见光特征图像，经成像透镜组件220与可见光合光，再通过图像输入控制装置400对投影装置300进行控制以形成特征投影图像，以实现Local Dimming(区域调光)功能。通过监测装置700采集特征投影图像，以根据特征图像对投影图像进行投影状态的调节。
在本实施例中，图像输入控制装置400还可以根据不同的工作模式对DMD成像进行调控，例如，在仅需对投影图像进行投影状态的调节而无需显示正常的投影图像时，可以仅对不可见光进行调控而不对可见光进行调控，通过不可见光形成的不可见光特征图像对投影图像进行投影状态的调节，而投影图像可以显示为黑白等效果。
参见图7，本发明投影系统另一实施例包括至少两个投影设备10及监测装置700。其中，投影设备10的结构参见上述投影设备10实施例，在此不再赘述。监测装置700用于采集至少两个投影设备10形成的至少两幅投影图像中的特征投影图像，并根据特征投影图像进行叠打或融合。
一并参见图7和图8，在一实施例中，至少两个投影设备包括第一投影设备101及第二投影设备102，第一投影设备101用于形成第一投影图像810，第一投影图像810包括第一不可见光特征图像811；第二 投影设备102用于形成第二投影图像820，第二投影图像820包括第二不可见光特征图像821，通过设置第一投影设备101及第二投影设备102的位置，使得第一不可见光特征图像811与第二不可见光特征图像821重合，以使得第一投影图像810与第二投影图像810叠打形成完整的投影图像830。
一并参见图7和图9，在另一实施例中，至少两个投影设备包括第一投影设备101及第二投影设备102，第一投影设备101用于形成第三投影图像840，第三投影图像840包括第三不可见光特征图像840；第二投影设备102用于形成第四投影图像850，第四投影图像850包括第四不可见光特征图像851，通过设置第一投影设备101及第二投影设备102的位置，使得第三不可见光特征图像841与第四不可见光特征图像851重合，以使得第三投影图像840与第四投影图像850融合形成完整的投影图像860。
在以上两个实施例中，都可以根据监测装置700对不可见光特征图像进行监测，以根据不可见光特征图像对投影设备的位置进行调整，使得融合或叠打效果更精确。
可以理解的是，投影设备较多时可实现多个投影设备中部分投影设备进行融合，部分投影设备进行叠打。
参见图10，本发明投影方法一实施例包括：
S201、不可见光光源及可见光光源分别出射不可见光和可见光；
S202、成像装置接收不可见光以形成不可见光特征图像，并出射至投影装置；
S203、投影装置将不可见光特征图像投影至投影平面形成特征投影图像，接收可见光形成可见光图像并投影至投影屏幕；以利用接收到的特征投影图像的监测信息对投影平面上的可见光图像进行投影状态的调节。
其中，实现本发明投影方法的投影设备的结构参见上述投影设备10实施例，在此不再赘述。
本发明实施例通过在投影设备10中加入不可见光光源110及相应 的成像装置200，以在投影图像中形成不可见光特征图像，能够使得投影图像的投影状态调节不受外界环境的影响，以减小工作环境对投影设备的投影状态的调节的影响，当涉及多台投影设备配合投影时，可减小外界环境对相互配合的多台投影设备的搭建的影响，提高整体工作效率，缩短工程周期。
参见图11，本发明投影方法另一实施例包括：
S301、不可见光光源及可见光光源分别出射不可见光和可见光；
S302、成像装置接收不可见光以形成不可见光特征图像，并出射至投影装置；
S303、投影装置将不可见光特征图像投影至投影平面形成特征投影图像，接收可见光形成可见光图像并投影至投影屏幕；
S304、监测装置对不可见光特征图像进行采集和监测，以利用接收到的特征投影图像的监测信息对投影平面上的可见光图像进行投影状态的调节。
其中，实现本发明投影方法的投影系统的结构参见上述投影系统实施例，在此不再赘述。
本发明实施例通过在投影设备10中加入不可见光光源110及相应的成像装置200，以在投影图像中形成不可见光特征图像，能够使得投影图像的投影状态调节不受外界环境的影响，以减小工作环境对投影设备的投影状态的调节的影响，当涉及多台投影设备配合投影时，可减小外界环境对相互配合的多台投影设备的搭建的影响，提高整体工作效率，缩短工程周期。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种投影设备，其特征在于，包括：
    不可见光光源及可见光光源，分别用于出射不可见光和可见光，所述不可见光和所述可见光的路径部分重叠；
    成像装置，设置在所述不可见光光源的路径上，用于对所述不可见光进行成像处理以形成不可见光特征图像；
    投影装置，用于接收所述不可见光特征图像，并将所述不可见光特征图像投影至投影平面以形成特征投影图像；还用于接收所述可见光，对所述可见光进行成像处理以形成可见光图像并投影至所述投影平面；
    所述投影装置还用于接收所述特征投影图像的监测信息，基于所述监测信息调节所述投影平面上的所述可见光图像的投影状态。
  2. 根据权利要求1所述的投影设备，其特征在于，所述投影设备还包括光路引导装置，所述光路引导装置设置在所述不可见光光源和所述可见光光源的路径上，用于分别将所述不可见光特征图像和所述可见光引导至所述投影装置。
  3. 根据权利要求2所述的投影设备，其特征在于，所述光路引导装置包括二向色片或带通滤波片。
  4. 根据权利要求1所述的投影设备，其特征在于，所述成像装置包括不可见光调制装置和成像透镜组件；
    所述不可见光调制装置用于对所述不可见光进行扫描，并向所述成像透镜组件出射扫描后的不可见光；
    所述成像透镜组件接收所述扫描后的不可见光，并基于所述扫描后的不可见光形成所述不可见光特征图像。
  5. 根据权利要求4所述的投影设备，其特征在于，所述成像透镜组件为F-Theta成像系统。
  6. 根据权利要求1所述的投影设备，其特征在于，所述投影装置包括DMD芯片，所述DMD芯片用于将所述不可见光特征图像投影至所述投影平面，以及对所述可见光进行调制形成可见光图像并将所述可 见光图像投影至所述投影平面。
  7. 根据权利要求1所述的投影设备，其特征在于，所述不可见光光源为单颗红外光源，所述不可见光调制装置为二维不可见光调制装置；或
    所述不可见光光源为红外光源阵列，所述不可见光调制装置为一维不可见光调制装置。
  8. 一种投影系统，其特征在于，包括监测装置及如权利要求1至7任一项所述的投影设备，所述监测装置用于对至少一组所述投影设备形成的所述不可见光特征图像进行采集和监测，以实现对所述至少一组所述投影设备的可见光的投影图像进行投影状态的调节。
  9. 根据权利要求8所述的投影系统，其特征在于，所述监测装置包括图像采集装置及显示装置，所述图像采集装置用于采集所述不可见光特征图像，所述显示装置与所述图像采集装置连接，用于显示所述不可见光特征图像。
  10. 一种投影方法，其特征在于，包括：
    不可见光光源及可见光光源分别出射不可见光和可见光；
    成像装置接收所述不可见光以形成不可见光特征图像，并出射至投影装置；
    所述投影装置将所述不可见光特征图像投影至投影平面形成特征投影图像，接收所述可见光形成可见光图像并投影至投影屏幕；以利用接收到的所述特征投影图像的监测信息对所述投影平面上的所述可见光图像进行投影状态的调节。
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