WO2021005711A1 - 投射型映像表示装置 - Google Patents

投射型映像表示装置 Download PDF

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Publication number
WO2021005711A1
WO2021005711A1 PCT/JP2019/027132 JP2019027132W WO2021005711A1 WO 2021005711 A1 WO2021005711 A1 WO 2021005711A1 JP 2019027132 W JP2019027132 W JP 2019027132W WO 2021005711 A1 WO2021005711 A1 WO 2021005711A1
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WO
WIPO (PCT)
Prior art keywords
lens
projection
display device
image display
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/027132
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English (en)
French (fr)
Japanese (ja)
Inventor
周平 小林
清水　拓也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Ltd
Original Assignee
Maxell Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maxell Ltd filed Critical Maxell Ltd
Priority to PCT/JP2019/027132 priority Critical patent/WO2021005711A1/ja
Priority to JP2021530398A priority patent/JP7177936B2/ja
Priority to US17/617,930 priority patent/US12044900B2/en
Priority to CN201980098312.1A priority patent/CN114424118A/zh
Publication of WO2021005711A1 publication Critical patent/WO2021005711A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
    • 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
    • G03B21/12—Projectors or projection-type viewers; Accessories therefor adapted for projection of either still pictures or motion pictures
    • 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
    • G03B21/145—Housing details, e.g. position adjustments thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • 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
    • H04N9/3147—Multi-projection systems
    • 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
    • H04N9/317—Convergence or focusing systems
    • 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]
    • H04N9/3179—Video signal processing therefor

Definitions

  • the present invention relates to a projection type image display device having an imaging function.
  • Patent Document 1 is a background technology of a projection type video display device having an imaging function.
  • a test pattern on a screen projected from a projector is imaged by a monitor camera, the data is analyzed, and based on the analysis result, zooming adjustment to the screen frame and trapezoidal distortion are performed in addition to the focus adjustment of the projector. It is disclosed that adjustments are made automatically.
  • An object of the present invention is to provide a projection type image display device capable of exchanging an imaging lens according to the focal length of the projection lens.
  • the present invention is, for example, a projection type image display device, which transmits or transmits a light source, an illumination optical system that guides light from the light source to a display element, and a display element.
  • a projection lens mounting unit that can mount a projection lens that projects reflected light and selectively mounts one of a plurality of interchangeable projection lenses to a projection type image display device, and a plurality of It is configured to include an image pickup lens mounting portion capable of selectively mounting one of the interchangeable image pickup lenses in the projection type image display device.
  • FIG. 1 It is a block diagram of the block of the projection type image display device in Example 1.
  • FIG. It is a block diagram of another modification of the projection type image display device in Example 1.
  • FIG. It is a block diagram of still another modification of the projection type image display device in Example 1.
  • FIG. It is a block diagram of still another modification of the projection type image display device in Example 1.
  • FIG. It is a figure explaining an example of the operation of the projection type image display device in Example 1.
  • FIG. It is a figure explaining another example of the operation of the projection type image display device in Example 1.
  • FIG. It is a figure explaining still another example of the operation of the projection type image display device in Example 1.
  • FIG. It is a figure explaining the combination of the projection lens and the image pickup lens of the projection type image display apparatus in Example 1.
  • FIG. 1 It is explanatory drawing of attachment / detachment of the image pickup lens (or camera unit) and the projection lens of the projection type image display device in Example 1.
  • FIG. It is explanatory drawing of another example of attachment / detachment of an image pickup lens (or a camera unit) of a projection type image display apparatus and a projection lens in Example 1.
  • FIG. It is a figure explaining the identification method after exchange
  • FIG. It is a figure explaining another example of the identification method after exchange
  • FIG. It is a figure explaining still another example of the identification method after exchange
  • FIG. FIG. 5 is an explanatory diagram of a configuration in which a projection lens and an imaging lens (or a camera unit) can be attached and detached as an integrated lens unit in the first embodiment. It is explanatory drawing of another example of the configuration which makes a projection lens and an image pickup lens (or a camera unit) detachable as an integrated lens unit in Example 1. FIG. It is explanatory drawing of the operation principle of the lens shift function by a projection lens in Example 2.
  • FIG. FIG. 5 is a diagram illustrating a configuration in which the imaging range in the second embodiment includes the entire projection range by the lens shift function. It is a figure explaining the use state of the telephoto side end when FIG.
  • FIG. 11A is a wide-angle side end when the projection lens is a zoom lens in Example 2.
  • FIG. FIG. 5 is a diagram illustrating a configuration in which, when the projection lens is a zoom lens in the second embodiment, the image pickup lens is also a zoom lens and the image pickup lens also adjusts the zoom according to the zoom of the projection lens. It is a figure explaining the structure which performs the lens shift in conjunction with the projection lens and the image pickup lens in Example 2.
  • FIG. FIG. 5 is a diagram illustrating a configuration in which a projection lens and an imaging lens are interlocked to perform lens shift when the projection lens is a zoom lens in the second embodiment.
  • FIG. 5 is a diagram illustrating a configuration in which a projection lens and an image pickup lens are interlocked with each other as a zoom lens when the projection lens is a zoom lens in the second embodiment to shift a lens. It is a figure explaining the structure which performs a lens shift by interlocking a projection lens and an image pickup lens, and varying the shift amount in Example 2.
  • FIG. FIG. 5 is a diagram illustrating a configuration in which a projection lens and an imaging lens are interlocked and a shift amount is variable to perform lens shift when the projection lens is a zoom lens in the second embodiment.
  • FIG. 5 is a diagram illustrating a configuration in which when the projection lens is a zoom lens in the second embodiment, the imaging lens is also used as a zoom lens to link the projection lens and the imaging lens and to change the shift amount to perform lens shift.
  • FIG. 5 is a diagram illustrating a configuration in which the shift of the optical axis position of the projection lens and the conversion of the angle of the optical axis of the imaging camera are linked to perform the lens shift in the second embodiment.
  • FIG. 5 is a diagram illustrating a configuration in which a lens shift is performed in conjunction with a shift of the optical axis position of the projection lens and a conversion of the angle of the optical axis of the imaging camera when the projection lens is a zoom lens in the second embodiment.
  • the imaging lens is also used as a zoom lens, and the shift of the optical axis position of the projection lens and the conversion of the angle of the optical axis of the imaging camera are linked to perform the lens shift. It is a figure explaining.
  • FIG. 1A is a block diagram of the projection type video display device in this embodiment.
  • the projection type image display device 100 includes a projection optical system (projection lens) 101, a display element 102, a display element drive unit 103, an illumination optical system 104, a light source 105, a power supply 106, an operation input unit 107, and a non-volatile memory. It includes 108, a memory 109, and a control unit 110.
  • the projection type image display device 100 includes an image pickup lens 191 and an image sensor 192, an image pickup lens identification unit 193, a projection lens identification unit 194, a cooling unit 115, a communication unit 131, a video signal input unit 132, and an audio signal input unit 133. It includes a video signal output unit 134, an audio signal output unit 135, a speaker 140, an image adjustment unit 160, a storage unit 170, an attitude sensor 180, and the like.
  • the light source 105 generates light for image projection, and uses a high-pressure mercury lamp, a xenon lamp, an LED light source, a laser light source, or a combination thereof.
  • the power supply 106 converts an AC current input from the outside into a DC current and supplies electric power to the light source 105. Further, the power supply 106 supplies the required DC current to each of the other parts.
  • the illumination optical system 104 collects the light generated by the light source 105, makes it more uniform, and irradiates the display element 102.
  • the cooling unit 115 cools each part that becomes a high temperature state, such as the light source 105, the power supply 106, or the display element 102, by an air cooling method or a liquid cooling method as necessary.
  • the display element 102 is an element that transmits or reflects light from the illumination optical system 104 and modulates the light to generate an image.
  • a transmissive liquid crystal panel For example, a transmissive liquid crystal panel, a reflective liquid crystal panel, or a DMD (Digital Micromirror). Device: Registered trademark) Use a panel or the like.
  • the display element drive unit 103 sends a drive signal corresponding to the video signal to the display element 102.
  • the projection optical system 101 is a magnifying projection optical system that projects an image onto a display surface (screen) 200, and includes a lens and / or a mirror.
  • the video signal referred to by the display element driving unit 103 may be an input video signal input from the outside via the video signal input unit 132, and the image adjusting unit 160 adjusts the image with respect to the input video signal.
  • the video signals may be used, and the signals obtained by superimposing the OSD image signals generated by the control unit 110 on these video signals using the images stored in the non-volatile memory 108 or the storage unit 170 may be referred to.
  • the optical image generated by the display element 102 modulating the light according to the drive signals generated by the display element drive unit 103 with reference to these input video signals is displayed on the display surface 200 as a display image by the projection optical system 101. Be projected.
  • the posture sensor 180 is composed of a gravity sensor, a gyro sensor, or the like, and detects the installation posture of the projection type image display device 100.
  • the control unit 110 can use the detected information regarding the installation posture. Specifically, the control unit 110 uses the detected information on the installation posture to rotate the direction of the image displayed on the display element 102, and automatically controls the display direction so that the display direction does not seem strange to the installation state. May be good. Further, the control unit 110 controls the cooling unit 115 using the information regarding the detected installation posture, controls the local strength of cooling and the like, and changes the threshold value for detecting a cooling error so as to be suitable for the detected installation posture. Control and the like may be performed.
  • the image pickup lens 191 and the image pickup sensor 192 form a so-called camera (imaging camera), and are also configured as a camera unit.
  • the image sensor 192 may be a visible light sensor or an infrared sensor. It may be appropriately selected depending on the intended use.
  • a camera composed of an imaging lens 191 and an imaging sensor 192 is used to image a projected image or an image projection region including a projected image.
  • the camera may be configured as an infrared camera whose main detection wavelength is infrared rays.
  • the pointing position is optically designated by the pointer device by emitting or reflecting infrared rays, and the infrared camera images the display surface 200 including the light emission or reflection of the infrared rays.
  • a program executed by the control unit 110 detects the pointing position based on the imaging result.
  • Various interactive functions can be realized by controlling to change the image or GUI based on the detected pointing position.
  • a program executed by the control unit 110 based on the image captured by the infrared camera detects a person standing in front of the display surface 200 and is used for antiglare control such as reducing the light output of the projected image. You may.
  • the camera including the image pickup lens 191 and the image pickup sensor 192 may be configured as a visible light camera.
  • the image around the display surface 200 may be used for recording or imaging for outputting to the outside.
  • the projected image may be captured by a camera including the imaging lens 191 and the imaging sensor 192, and the autofocus function of the projection lens may be realized based on the captured image.
  • the autofocus function will be described later.
  • a camera including an image pickup lens 191 and an image sensor 192 captures a plurality of projected images of a plurality of projection type image display devices and automatically superimposes the plurality of projected images based on the captured images. Good.
  • the automatic superimposition function of the plurality of projected images will be described later.
  • the operation input unit 107 is a light receiving unit for operation buttons and a remote controller, and inputs an operation signal from the user.
  • the speaker 140 can output voice based on the voice data input to the voice signal input unit 133. Further, the speaker 140 may output a built-in operation sound or an error warning sound.
  • the communication unit 131 communicates various data such as control data and contents with an external device, a network, a server, or the like via a wired or wireless interface (I / F).
  • I / F a wired or wireless interface
  • the non-volatile memory 108 stores various data used in the projector function.
  • the memory 109 stores the projected video data and the control data of the device.
  • the image data used to generate the GUI image may be stored.
  • the control unit 110 controls the operation of each connected unit.
  • the image adjustment unit 160 performs image processing on the video data input by the video signal input unit 132.
  • Examples of the image processing include scaling processing for enlarging, reducing, and transforming an image, bright adjustment processing for changing brightness, contrast adjustment processing for changing the contrast curve of an image, and a gamma curve indicating the gradation characteristics of an image.
  • the storage unit 170 records video, image, audio, various data, and the like.
  • video, image, audio, various data, etc. may be recorded in advance at the time of product shipment, and video data, image data, audio data, etc. acquired from an external device, an external server, etc. via the communication unit 131, etc.
  • Various data such as data may be recorded.
  • the video, image, various data, and the like recorded in the storage unit 170 may be output as a projected video via the display element 102 and the projection optical system 101.
  • the voice recorded in the storage unit 170 may be output as voice from the speaker 140.
  • the video signal input unit 132 inputs a video signal from an external device via a wired or wireless I / F.
  • the audio signal input unit 133 inputs an audio signal from an external device via a wired or wireless I / F.
  • the video signal output unit 134 outputs a video signal to an external device via a wired or wireless I / F.
  • the video signal output unit 134 may have a function of outputting the video signal input from the first external device as it is to the second external device via the video signal input unit 132.
  • the video signal output unit 134 may have a function of outputting a video signal based on the video data recorded in the storage unit 170 to an external device.
  • the video signal output unit 134 may have a function of outputting a video signal based on the video captured by the camera to an external device.
  • the audio signal output unit 135 outputs an audio signal to an external device via a wired or wireless I / F.
  • the audio signal output unit 135 may have a function of outputting the audio signal input from the first external device as it is to the second external device via the audio signal input unit 133.
  • the audio signal output unit 135 may have a function of outputting an audio signal based on the audio data recorded in the storage unit 170 to an external device.
  • the video signal input unit 132 and the audio signal input unit 133 may be configured as an integrated signal input I / F, although a separate example is shown in the figure. Further, the video signal output unit 134 and the audio signal output unit 135 may also form an integrated signal output I / F in the same manner. Further, the video signal input unit 132, the audio signal input unit 133, the video signal output unit 134, and the audio signal output unit 135 may also form an integrated signal input / output I / F in the same manner. These integrated I / Fs may have a communication function for bidirectionally communicating control signals. The communication function may be provided separately from the communication unit 131.
  • the image pickup lens 191 is configured to be detachable from the projection type image display device 100 at the portion indicated by the alternate long and short dash line 122.
  • the image pickup lens identification unit 193 identifies the type and / or performance of the image pickup lens 191 mounted on the projection type image display device 100. The configuration of the image pickup lens identification unit 193 and the processing of the image pickup lens identification unit 193 when the image pickup lens 191 is attached / detached will be described later.
  • the projection type image display device 100 of FIG. 1A is configured such that the projection optical system (projection lens) 101 can be detached from the projection type image display device 100 at the portion indicated by the alternate long and short dash line 121.
  • the projection lens identification unit 194 identifies the type and / or performance of the projection lens 101 mounted on the projection type image display device 100. The configuration of the projection lens identification unit 194 and the processing of the projection lens identification unit 194 when the projection optical system (projection lens) 101 is attached / detached will be described later.
  • the image pickup lens 191 may be configured as shown in FIG. 1B as another modification in which the image pickup lens 191 is attached to and detached from the projection type image display device 100 differently. That is, in FIG. 1B, the portion indicated by the one-point chain line including the image pickup lens 191 and the image pickup sensor 192 is the camera unit 123, and the camera unit 123 is configured to be detachable from the projection type image display device 100. In this case, the image pickup lens identification unit 193 identifies the type and / or performance of the camera unit mounted on the projection type image display device 100. The configuration of the image pickup lens identification unit 193 and the processing of the image pickup lens identification unit 193 when the camera unit is attached / detached will be described later. Note that, in FIG. 1B, the configuration in which the projection optical system (projection lens) 101 is attached to and detached from the projection type image display device 100 is the same as in FIG. 1A, and the description thereof will be omitted.
  • the image pickup lens 191 is attached to and detached from the projection type image display device 100, it may be configured as shown in FIG. 1C. That is, in FIG. 1C, the portion indicated by the alternate long and short dash line including the imaging lens 191 and the projection optical system (projection lens) 101 is the lens unit 124, and the lens unit 124 is detachably configured from the projection type image display device 100.
  • the image pickup lens identification unit 193 identifies the type and / or performance of the image pickup lens 191 mounted on the projection type image display device 100.
  • the projection lens identification unit 194 identifies the type and / or performance of the projection lens 101 mounted on the projection type image display device 100.
  • the configuration of the image pickup lens identification unit 193, the configuration of the projection lens identification unit 194, and the processing of the image pickup lens identification unit 193 and the projection lens identification unit 194 when the lens unit is attached / detached will be described later.
  • the image pickup lens identification unit 193 and the projection lens identification unit 194 It is not necessary to provide the lenses individually, and both may be integrated to form a lens unit identification unit.
  • the lens unit identification unit may identify the type of lens unit, the type of imaging lens, and / or the type of projection lens.
  • the image pickup lens 191 is attached to and detached from the projection type image display device 100, it may be configured as shown in FIG. 1D. That is, as shown in FIG. 1D, the portion indicated by the alternate long and short dash line including the image pickup lens 191 and the image pickup sensor 192 and the projection optical system (projection lens) 101 is the lens unit 125, and the lens unit 125 displays a projection type image. It is configured to be removable from the device 100.
  • the image pickup lens identification unit 193 identifies the type and / or performance of the image pickup lens 191 mounted on the projection type image display device 100.
  • the projection lens identification unit 194 identifies the type and / or performance of the projection lens 101 mounted on the projection type image display device 100.
  • the configuration of the image pickup lens identification unit 193, the configuration of the projection lens identification unit 194, and the processing of the image pickup lens identification unit 193 and the projection lens identification unit 194 when the lens unit is attached / detached will be described later.
  • the image pickup lens identification unit 193 and projection are performed. It is not necessary to provide the lens identification unit 194 individually, and both may be integrated to form a lens unit identification unit.
  • the lens unit identification unit may identify the type of lens unit, the type of image pickup lens, the type of image pickup sensor, and / or the type of projection lens.
  • the projection type video display device 100 can be equipped with various functions.
  • FIG. 2A is a diagram illustrating an example of the operation of the projection type image display device 100 in this embodiment.
  • the projection type image display device 100 includes a camera unit 123 including an image pickup lens 191 and an image pickup sensor 192.
  • the projected image may be imaged by the image sensor 192, and the focus gasping process on the screen of the projection lens 101 may be performed using the imaged result.
  • various known techniques may be used.
  • FIG. 2B is a diagram illustrating an example of another operation of the projection type image display device 100 in this embodiment.
  • the projection type image display device 100 tracks a locus drawn by a user with a pen-shaped device or the like on a display surface (screen) 200 by a camera unit 123, and displays the locus on the projected image. To do.
  • This makes it possible to realize a projection type video display device having an interactive function.
  • various known techniques such as mounting an infrared light emitting function on a pen-shaped device or an infrared laser curtain method that reflects infrared rays when the pen-shaped device comes into contact with a display surface (screen) may be used.
  • FIG. 2C is a diagram illustrating an example of still another operation of the projection type image display device 100 in this embodiment.
  • a plurality of projected images by a plurality of projection type image display devices 100 having a lens shift function capable of adjusting the position of the projected image are imaged by the camera unit 123, and the plurality of projection images are used.
  • the position of the projected image is adjusted so that the projected images overlap in a desired state. For example, in a desired state, a blended projection state in which the ends of a plurality of projected images are overlapped with each other to form one large projected image, or a stack projection state in which almost the entire projection images are overlapped at the same position. and so on.
  • the superposition adjustment function of the projected image is also called an edge blending function
  • the automatic superposition adjustment function is also called an automatic edge blending function.
  • the automatic superposition adjustment function for example, analysis processing based on the captured image of the camera unit is performed in at least one projection type image display device among a plurality of projection type image display devices.
  • the one projection type image display device detects, for example, a difference in shape, a difference in position, a difference in brightness, a difference in color, or a combination thereof of a plurality of projected images by the analysis process. Based on the detection result, the one projection type image display device is such that the difference in shape, the difference in position, the difference in brightness, or the difference in color of a plurality of projected images is reduced.
  • the shape, position, brightness, and color of the projected image of the projection type image display device of the above may be controlled.
  • the plurality of projected images are connected via a wired communication I / F or a wireless communication I / F, and the wired communication I / F or the wireless communication is performed.
  • the control information may be communicated via the I / F.
  • the shape, brightness, and color of the projected image may be controlled by controlling the entire projected image or a partial range such as the edge of the projected image. Control of the shape of the projected image includes linear and non-linear deformation control. Controlling the brightness or color of the projected image also includes controlling the brightness or color of the entire projected image or a predetermined part of the projected image, but the position of the entire projected image or a predetermined part of the projected image. Includes brightness or color control that varies linearly or non-linearly depending on. For detailed operation, various known techniques may be used.
  • FIG. 3 is a diagram illustrating a combination of a projection lens and an imaging lens of the projection type image display device in this embodiment.
  • the projection type image display device of the present embodiment has a configuration in which a plurality of types of projection lenses (interchangeable lenses) having different focal lengths can be selected and attached so that the user can select the screen size and the projection distance.
  • a plurality of types of projection lenses interchangeable lenses
  • FIG. 3 (A) is a case where a long focus lens 201 is used as a projection lens, (B) is a case where a medium focus lens 301 is used as a projection lens, and (C) is an ultrashort projection lens. The case where the focus lens 401 is used is shown.
  • the projection lens (interchangeable lens) is detachable, and the camera unit (or image pickup lens) is also detachable, so that a plurality of projection lenses having different focal distances can be attached.
  • the camera unit or image pickup lens
  • a projection type image display device can be used with a more suitable combination of the projection lens and the imaging lens. To be able to use.
  • the camera unit 303 when the projection lens is a wide-angle midfocal lens 301, the camera unit 303 needs to be able to image a wider range than the projected image. Therefore, it is necessary to use the image pickup lens 302 for medium focus, which has a wider angle than the medium focus lens of the projection lens. In this state, when the projection lens is replaced with the long focus lens 201 as shown in FIG. 3A, the projected image is displayed even if the camera unit 303 using the image pickup lens 302 having a wider angle than the projection lens of the medium focus lens remains. Although it is possible to take an image including the above, the ratio of the projected image to the imaging range becomes small. In this case, the actual resolution for capturing the projected image range is reduced.
  • the projection lens can be replaced with a long focus lens as shown in FIG. 3 (A).
  • the camera unit or the imaging lens
  • the projection lens can be replaced with a camera unit 203 having a long-focus long-focus imaging lens 202 with a longer focus than the medium-focus imaging lens 302 when the short-focus projection lens 301 is used.
  • the ratio of the projected image to the imaging range can be made more appropriate, and the above-mentioned decrease in the substantial resolution can be more preferably suppressed.
  • the projection lens can be attached and detached and replaced, and the camera unit or the imaging lens can also be attached and detached and exchanged, which is more suitable for the focal length of each projection lens. It becomes possible to use an imaging lens.
  • the ultrashort focus lens 401 shown in FIG. 3C is different from the long focus lens 201 and the middle focus lens 301 in the front direction (the optical axis direction of the long focus lens and the middle focus lens) of the projection type image display device.
  • the image may be projected in a steep direction with a large elevation angle. Then, there is a high possibility that the angle of the image pickup range of the image pickup lens cannot be covered at all by the image pickup range of the image pickup sensor for the long focus lens 201 and the image pickup range of the image pickup sensor for the middle focus lens 301.
  • the camera unit or the image pickup lens is replaced with the camera unit 403 for the ultrashort focus projection lens or the image pickup lens 402 for the ultrashort focus.
  • the projection type image display device of the present embodiment when the camera unit or the imaging lens is replaced, the settings of the brightness correction, the color correction, and the optical distortion correction for the captured image performed by the camera unit or the control unit are exchanged. It is desirable to change it according to the characteristics of the later imaging lens. This makes it possible to further suppress the possibility of erroneous control due to replacement of the camera unit or the imaging lens.
  • the correction of the optical distortion includes a correction of converting the captured projected image into an appropriate shape by performing a geometric correction on the captured image.
  • FIG. 4 is an explanatory diagram of attachment / detachment of the imaging lens (or camera unit) and the projection lens of the projection type image display device in this embodiment.
  • (A) shows a state in which the projection lens 101 and the image pickup lens 191 are attached to the projection type image display device 100, respectively
  • FIG. 4 (B) shows the projection lens 101 and the image pickup lens 191 separately.
  • the configuration that can be attached and detached is shown.
  • the image pickup lens may be replaced together with the camera unit.
  • 291 is a projection lens mounting unit capable of selectively mounting one of the plurality of interchangeable projection lenses on the projection type image display device
  • 292 is a plurality of interchangeable imaging lenses (2).
  • FIG. 5 is an explanatory diagram of another example in which the imaging lens (or camera unit) and the projection lens of the projection type image display device in this embodiment are individually attached and detached.
  • FIG. 5 shows an example of using an ultra-short focus lens as a detachable projection lens.
  • the same components as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 5 shows a state in which the ultra-short focus lens 401 and the ultra-short focus imaging lens 402 are attached to the projection type image display device 100, respectively, and FIG. 5 (B) shows the ultra-short focus lens.
  • the configuration in which the 401 and the ultra-short focus imaging lens 402 can be attached and detached individually is shown.
  • (C) is a side view of (A)
  • (D) is a side view of (B).
  • the image pickup lens or camera unit
  • the image pickup lens also needs to be attached with the image pickup lens (or camera unit) for the ultra short focus lens.
  • the identification method after exchanging the imaging lens (or camera unit) will be described.
  • the simplest method of identifying the image pickup lens (or camera unit) after replacement is a method in which the user selects the type of image pickup lens (or camera unit) after replacement through a menu after replacement.
  • FIGS. 6A to 6C a method will be described in which the projection type image display device can automatically identify the image pickup lens after replacement even if the user does not make a selection via a menu.
  • FIG. 6A is an explanatory diagram of an example of a method of identifying an image pickup lens (or a camera unit) by using communication in the projection type image display device of the present embodiment.
  • the projection type image display device 100 includes an identification unit (hereinafter, an image pickup lens identification unit 193) of an image pickup lens 191 (or a camera unit), and the image pickup lens 191 (or a camera unit) has, for example, a unique ID number or an image pickup.
  • An IC (Integrated Circuit) 197 having information for identifying an imaging lens (or camera unit) such as a model name of a lens (or camera unit) is provided.
  • the projection type image display device 100 acquires information for identifying the image pickup lens (or camera unit) from the IC 197 of the image pickup lens (or camera unit) and takes an image.
  • the lens (or camera unit) can be identified.
  • the projection type image display device may change the correction setting for the captured image described with reference to FIG. 3 according to the type of the imaging lens (or camera unit) based on the identification result.
  • the information on the characteristics of the image pickup lens (or camera unit) may be determined from the information on the image pickup lens (or camera unit) identified by the image projection device. Further, as another method, the IC may be provided with information on the characteristics of the imaging lens itself, and may be configured to acquire information indicating the characteristics of the imaging lens (or camera unit) instead of the identification information. ..
  • the image pickup lens identification unit may be configured to include an IC information reader, which is hardware that reads information from the IC.
  • the IC information reader may be simply provided, and the control unit may process the information read by the IC information reader to identify the imaging lens (or camera unit).
  • FIG. 6B is an explanatory diagram of a method of identifying an imaging lens (or camera unit) by a junction terminal of an imaging lens (or camera unit) in the projection type image display device of the present embodiment.
  • the projection type image display device 100 includes an image pickup lens identification unit 193, and the image pickup lens (or camera unit) is for identifying, for example, an image pickup lens (or camera unit) at a connection portion with a projection type image display device.
  • the image pickup lens identification unit of the projection type image display device having the switch 198 identifies the type of the image pickup lens (or camera unit) connected by the ON / OFF pattern of the switch.
  • the switch may be connected by, for example, a plurality of electrical terminals, some terminals may be grounded, and the presence or absence of connection may be determined by the pattern of the electrical switch.
  • the projection type image display device may change the correction setting for the captured image described with reference to FIG. 3 according to the type of the imaging lens (or camera unit) based on the identification result.
  • the image pickup lens identification unit may be configured to include a switch discrimination unit that reads a switch ON / OFF pattern.
  • a switch discriminating unit may be provided, and the control unit may process information on the state of the switch determined by the switch discriminating unit to identify the imaging lens (or camera unit).
  • an electric circuit is provided at the connection portion between the projection type image display device and the image pickup lens (or camera unit) in the present embodiment, and the image pickup lens (or the image pickup lens (or camera unit) is provided based on electrical characteristics such as voltage, current, resistance value, or power.
  • electrical characteristics such as voltage, current, resistance value, or power.
  • the image pickup lens (or camera unit) has a resistance unique to each type for identifying the image pickup lens (or camera unit) at the connection portion with the projection type image display device.
  • the projection type image display device includes an imaging lens identification unit 193, and further includes a measuring unit that measures the electrical characteristics of the connection unit with the imaging lens (or camera unit). When an imaging lens (or camera unit) is connected, the measuring unit measures the electrical characteristics of the terminal, and the imaging lens identification unit identifies the connected imaging lens (or camera unit) using the measurement results. To do.
  • the electrical characteristics used for identification may be either voltage, current, resistance value, or electric power. Alternatively, a combination of these may be used.
  • the projection type image display device may change the correction setting for the captured image described with reference to FIG. 3 according to the type of the imaging lens (or camera unit) based on the identification result.
  • the measuring unit may be simply provided, and the control unit may process the information on the electrical characteristics of the terminals measured by the measuring unit to identify the imaging lens (or camera unit).
  • the projection type image display device may further include a configuration for identifying the type of projection lens attached (connected) to the projection type image display device.
  • a configuration for identifying the type of the projection lens As for the configuration for identifying the type of the projection lens, the configuration described with reference to FIGS. 6A to 6C is provided in the projection lens instead of the image pickup lens (or camera unit), and projection is performed instead of the image pickup lens identification unit of the projection type image display device.
  • a lens identification unit may be provided.
  • the process of identifying the type of the imaging lens (or the camera unit) described with reference to FIGS. 6A to 6C may be read as the process of identifying the type of the projection lens, and thus the description thereof will be omitted again.
  • an identification unit having both the function of the imaging lens identification unit and the function of the projection lens identification unit is provided. You may. Alternatively, the control unit may execute both the image pickup lens identification process of the image pickup lens identification unit and the projection lens identification process of the projection lens identification unit.
  • the imaging lens (or camera unit) and the projection lens are individually attached and detached as described with reference to FIGS. 4 and 5, when the desired projection lens is attached to the projection type image display device, the user attaches the projection lens to the projection lens. It is necessary to select and attach a suitable imaging lens (or camera unit). Therefore, in the projection type image display device of the present embodiment, a suitable combination of imaging lenses for each projection lens is set as a "recommended combination", and the "recommended combination" is stored in the memory of the projection type image display device. Store information. The type of projection lens actually worn by the user and the type of imaging lens (or camera unit) are identified, and the operation and warning of the projection type image display device as shown in FIG. 7, for example, according to the identified combination. Processing may be performed.
  • FIG. 7 is a diagram illustrating a combination of a projection lens and an imaging lens in this embodiment.
  • the recommended combinations are (1) an ultra-short focus projection lens and an image pickup lens for an ultra-short focus lens (or a camera unit), and (2) a middle focus projection lens and an image pickup lens for a middle focus lens (or a camera unit). ), (3) A long-focus projection lens and an imaging lens (or camera unit) for a long-focus lens.
  • FIG. 7 shows an example of the combination of the projection lens and the image pickup lens (or the camera unit), the operation of the projection type image display device, and the presence / absence of a warning.
  • "Warning" in FIG. 7 and the following description means indicating in the projected image with a message or mark that the combination of the projection lens and the imaging lens (or camera unit) is not the recommended combination, or indicating that fact. It is a process such as emitting the indicated voice from the speaker. At this time, the model number of the imaging lens (or camera unit) recommended to be used together with the mounted projection lens is displayed in the projected image with a message or mark, or the model number is emitted from the speaker by voice. May be done. Further, along with the warning process, an inquiry screen or voice output asking the user whether to continue the state as it is may be performed to prompt the user to input an operation.
  • FIG. 7 the concepts of "working" and “not working” in FIG. 7 and the following description are intended for the operation of a projection type image display device using an imaging lens (or camera unit).
  • an imaging lens or camera unit
  • the autofocus function using the image pickup lens (or camera unit) described in FIG. 2A the interactive function using the image pickup lens (or camera unit) described in FIG. 2B, and the image pickup lens (or camera unit) described in FIG. 2C. It is assumed that the automatic edge blending function using the camera unit) does not work.
  • Combination [A] Since it is a recommended combination, it operates without warning.
  • Combination [B] Warn because it is not a recommended combination.
  • the imaging lens for a short single focus lens does not work in combination with anything other than a short single focus lens.
  • Combination [C] Warn because it is not a recommended combination.
  • the imaging lens for a short single focus lens does not work in combination with anything other than a short single focus lens. That is, since the short single focus lens has a different angle of view, the image to be captured may be deformed.
  • Combination [D] Warn because it is not a recommended combination.
  • the short single focus lens does not work in combination with any image other than the short single focus lens imaging lens.
  • Combination [E] Since it is a recommended combination, it operates without warning.
  • Combination [F] Warn because it is not a recommended combination. However, since the projection range of the long focus lens is included in the image pickup range of the image sensor for the medium focus lens, the combination can be operated although the accuracy is reduced if the warning is OK.
  • Combination [G] Warn because it is not a recommended combination. The short single focus lens does not work in combination with any image other than the short single focus lens imaging lens.
  • Combination [H] Warn because it is not a recommended combination. However, since the projection range of the medium focus lens extends beyond the image pickup range of the long focus lens imaging sensor, the combination should not operate.
  • Combination [I] Since it is a recommended combination, it operates without warning.
  • the control unit may control each unit for the warning and operation of the above combination.
  • the projection type image display device in the present embodiment identifies the type of the projection lens worn by the user and the type of the imaging lens (or camera unit), and is a projection type according to the identified combination.
  • the recommended combination operates as it is, and in the case of a non-recommended combination, a warning is issued and some functions using the imaging lens (or camera unit) are operated. Do not (may be expressed as limiting the operation).
  • a menu screen having a setting for the user to manually switch to the "operate” state for the function identified as the "non-operate” combination and set to the "non-operate” state by the control of the control unit. May be provided. This is because the identification function of the imaging lens (or the camera unit) and / or the identification function of the projection lens may be in an error state for some reason, and the correct identification result may not be output. Even in such an error state, if the user correctly attaches the recommended combination of projection lens and image pickup lens (or camera unit), the image pickup lens (or camera unit) can be used manually via the menu.
  • a projection lens and an imaging lens are configured as an integrated lens unit, and the lens unit is attached to and detached from the projection type image display device.
  • An example of the possible configuration will be described.
  • FIG. 8 is an explanatory diagram of a configuration in which a projection lens and an imaging lens (or a camera unit) are configured as an integrated lens unit in this embodiment, and the lens unit can be attached and detached.
  • (A) shows a state in which the projection lens 101 and the image pickup lens 191 are mounted on the projection type image display device 100 as an integrated lens unit
  • FIG. 8 (B) shows the projection lens 101 and the image pickup lens 191.
  • the configuration is shown so that it can be attached and detached in units of one lens unit.
  • Reference numeral 293 is a lens unit mounting unit capable of selectively mounting one of the plurality of interchangeable lens units to the projection type image display device.
  • (C) is a side view of (A)
  • (D) is a side view of (B).
  • a projection lens having a predetermined focal length and an imaging lens (or camera unit) suitable for the projection lens are configured as an integral lens unit in advance.
  • an imaging lens (or camera unit) suitable for the projection lens is already integrated and connected, so that the user can project a predetermined focal length. It is not necessary to search and select a suitable imaging lens (or camera unit) for the lens. In this case, it is preferable to save the trouble of installing the projection type image display device by the user.
  • image pickup lens (or camera unit) type identification process may include the image pickup lens (or camera unit) type identification process described with reference to FIGS. 6A to 6C.
  • the projection lens and the image pickup lens (or the camera unit) can be attached and detached in an integrated lens unit unit, but the identification process of the projection lens is performed by the image pickup lens (or the camera unit) as described in FIGS. 6A to 6C. ) May be installed separately from the identification process.
  • a configuration for identifying the projection lens and a configuration for identifying the imaging lens (or camera unit) are separately mounted on the lens unit in which the projection lens and the imaging lens (or camera unit) are integrated. It will be.
  • the combination information of the projection lens and the image pickup lens (or the camera unit) is stored in the memory of the projection type image display device in advance, the lens unit side in which the projection lens and the image pickup lens (or the camera unit) are integrated can be stored. Only a configuration for identifying either a projection lens or an image pickup lens (or a camera unit) needs to be provided. In this way, the projection type image display device performs identification processing on one of them, and based on the result of the identification processing, the projection lens and the image pickup lens (or camera unit) stored in the memory. It may be configured to identify both the type of the projection lens and the type of the image pickup lens (or the camera unit) by referring to the combination information.
  • the lens unit side in which the projection lens and the image pickup lens (or camera unit) are integrated is provided only with a configuration for identifying the image pickup lens (or camera unit), and the projection type image display device is shown in FIGS. 6A to 6A.
  • the connected imaging lens (or camera unit) is identified by the method described in 6C.
  • the type of the projection lens may be identified by referring to the identified type of the imaging lens (or camera unit) and the combination information of the projection lens and the imaging lens (or the camera unit) stored in the memory.
  • the lens unit side in which the projection lens and the imaging lens (or the camera unit) are integrated is provided only with a configuration for identifying the projection lens, and the projection type image display device is a connected projection lens. Performs identification processing.
  • the type of the image pickup lens (or the camera unit) may be identified by referring to the identified type of the projection lens and the combination information of the projection lens and the image pickup lens (or the camera unit) stored in the memory.
  • FIG. 9 is an explanatory diagram of another example in which the imaging lens (or camera unit) and the projection lens of the projection type image display device in this embodiment are integrally attached and detached as a lens unit.
  • FIG. 9 shows an example of using an ultra-short focus lens as a detachable projection lens.
  • the same components as those in FIG. 8 are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 9 the same components as those in FIG. 8 are designated by the same reference numerals, and the description thereof will be omitted.
  • (A) shows a state in which the ultra-short focus lens 401 and the ultra-short focus imaging lens 402 are mounted on the projection type image display device 100 as an integrated lens unit 124
  • (B) is super The configuration is shown in which the short focus lens 401 and the ultra short focus imaging lens 402 can be attached and detached in an integrated lens unit unit.
  • (C) is a side view of (A)
  • (D) is a side view of (B).
  • the lens unit of the ultra-short focus lens is integrated with an imaging lens (or camera unit) for the ultra-short focus lens.
  • the current lens unit is removed, and the projection lens which is an ultra-short focus lens and the imaging lens (or camera unit) for the ultra-short focus lens are used. It can be easily replaced by replacing it with a lens unit that is integrated with. Since the configuration and processing related to the identification process of the imaging lens (or camera unit) and the identification process of the projection lens are the same as those in FIG. 8, the description thereof will be omitted.
  • This embodiment describes a case where a projection lens having a projection function projected on a front screen realizes a lens shift function in a projection type image display device having an imaging function.
  • FIG. 10 is an explanatory diagram of an operating principle in which a lens shift function is performed by a projection lens such as a medium focus lens or a long focus lens that projects onto a front screen, which is a premise of this embodiment.
  • (A) shows an image on the front screen 200 when the optical axis 12 of the projection lens 101 coincides with the central axis 11 of the display element 102 included in the projection type image display device. It shows the state of projection.
  • (B) is on the front screen 200 when the optical axis 12 of the projection lens 101 is displaced in the direction perpendicular to the optical axis with respect to the central axis 11 of the display element 102. It shows the state of projecting an image. In that case, as shown in (B), the projection position of the projected image on the screen 200 is displaced (shifted) as compared with (A).
  • this lens position variable mechanism is referred to as a lens shift function.
  • FIG. 11A is a diagram illustrating a configuration in which the imaging range includes the projection range of the projected image at all the projection positions by the lens shift function in this embodiment. That is, FIG. 11A shows an example in which the optical axis of the projection lens 101 is shifted in the horizontal direction by ⁇ D from the center of the display element 102, where (A) is a ⁇ D shift, (B) is a shift of zero, and (C). Is a diagram showing the relationship between the image pickup lens 191 and the projection lens 101, the projection range 210 on the screen 200, and the image pickup range 220 when the image is + D-shifted.
  • FIG. 11A shows an example of a shift mechanism in which a projection lens is held by a slider 150 that can be displaced in the horizontal direction.
  • This is an example, and another shift mechanism may be used as long as the optical axis of the projection lens can be shifted.
  • the projected image is shifted by ⁇ about D ⁇ M depending on the magnification M of the projection lens.
  • the size of the projected image on the screen is M times the size of the displayed image on the display element due to the magnification M of the projection lens.
  • the optical axis position and angle of the imaging lens are not changed according to the state of the lens shift function of the projection lens. That is, the slide mechanism provided in the lens shift function shifts the optical axis of the projection lens by ⁇ D with respect to the projection type image device main body.
  • the position of the display element 102 relative to the main body of the projection type video apparatus is fixed.
  • the positions of the image pickup lens 191 and the image pickup sensor 192 are also fixed relative to the projection type image apparatus main body.
  • the slider may be driven by a manual rotary gear or the like (not shown) that can convert the rotational torque into the displacement amount of the slider. Further, the slider may be driven by a stepping motor, and the displacement amount may be controlled to be electronically controlled.
  • the lens shift function can be achieved by widening the focal length of the imaging lens sufficiently. It has an imaging range 220 including a projection range 210 of all projection positions by.
  • the imaging range 220 it is necessary to make the imaging range 220 very large with respect to the projection range 210.
  • the appropriate imaging range without lens shift is about 1.1 to 1.7 times the image projection range, it is necessary to add the amount of shift on the screen of the lens shift. Therefore, for example, FIG.
  • the ratio of the projection range (interactive effective function target range) to the imaging range is small, the resolution efficiency of the imaging sensor becomes poor when used as an imaging sensor for interactive functions.
  • FIG. 11B shows a state in which the telephoto end is used when the projection lens is a zoom lens and FIG. 11A is the wide-angle end.
  • FIG. 11B the same components as those in FIG. 11A are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 11B since FIG. 11A, which is the wide-angle end, already has an imaging range including the range of the projected image at all the projection positions by the lens shift function, the zoom of the projection lens is set to the telephoto end. Even in this case, the state in which the imaging range 220 includes the projection range 210 of all the projection positions by the lens shift function is always maintained.
  • the ratio of the projection range 210 (interactive effective function target range) to the image pickup range 220 becomes smaller, so that the resolution efficiency of the image pickup sensor becomes even worse when used as an image pickup sensor for the interactive function.
  • the effective resolution efficiency of the imaging sensor is worse at the telephoto end of the projection lens than at the wide-angle end.
  • the imaging lens may also be a zoom lens, and the zoom of the imaging lens may be adjusted according to the zoom of the projection lens.
  • FIG. 11C shows an example in which the zoom of the projection lens is in the telephoto end and the zoom of the imaging lens is also in the telephoto end.
  • the same components as those in FIG. 11B are designated by the same reference numerals, and the description thereof will be omitted.
  • the zoom of the imaging lens may be manual or automatic, similar to the zoom of the projection lens. If it is auto, the zoom of the imaging lens may be controlled in conjunction with the zoom of the projection lens. In the case of manual operation, the user or the installer may manually adjust the position appropriately.
  • FIGS. 11A to 11C for the sake of simplicity, an example of only the lens shift in the horizontal direction has been described, but in the case of the lens shift in the vertical direction and the lens shift in the two directions of the horizontal direction and the vertical direction. In the case of providing, the idea of the example of FIGS. 11A to 11C can be applied.
  • FIG. 12A is a diagram illustrating a configuration in which a projection lens and an imaging lens are interlocked to perform lens shift when a projection lens that projects onto a front screen, such as a medium focus lens or a long focus lens, has a lens shift function.
  • the same components as those in FIG. 11A are designated by the same reference numerals, and the description thereof will be omitted.
  • the projection lens 101 and the image pickup lens 191 are interlocked to perform lens shift. Specifically, the optical axis of the projection lens is shifted in the horizontal direction by ⁇ D from the center of the display element. At the same time, the optical axis of the image pickup lens is shifted horizontally by the same amount with respect to the center of the image pickup sensor.
  • FIG. 12A shows an example of a slide mechanism as a shift mechanism that holds both the projection lens 101 and the image pickup lens 191 with a slider 151 that can be displaced in the horizontal direction.
  • This is an example, and another shift mechanism may be used if shift is possible. By doing so, the shift amount of the projection lens 101 and the image pickup lens 191 is always the same.
  • the optical axis of the projection lens 101 and the optical axis of the image pickup lens 191 are shifted by ⁇ D with respect to the projection type image apparatus main body by the slide mechanism provided in the lens shift function.
  • the relative positions of the display element 102 and the image sensor 192 with respect to the main body of the projection type image device are fixed.
  • the slider 151 may be driven by a manual rotary gear or the like (not shown) that can convert the rotational torque into the displacement amount of the slider. Further, the slider may be driven by a stepping motor, and the displacement amount may be controlled to be electronically controlled.
  • the size of the projected image on the screen is M times the size of the displayed image on the display element due to the magnification M of the projection lens.
  • the imaging range 220 by the imaging lens may be, for example, as shown in FIG. 12A, having a size that includes the entire projection range 210 of the projected image on the screen and secures a predetermined margin. For example, it is desirable that the projection range is about 1.1 times to 1.7 times. Although a margin may be provided, when the image sensor is used for the interactive function, the ratio of the projection range (interactive effective function target range) to the image range becomes small, so that the effective resolution efficiency of the image sensor is doubled. It is more efficient to set it to a degree.
  • the shift amount by the shift mechanism is the same for the optical axis of the projection lens and the optical axis of the image pickup lens. Therefore, as shown in FIG. 12A, the projection range 210 is still included in the image pickup range 220 on the screen.
  • the magnification of the imaging lens is M, which is the same as the magnification of the projection lens (in the case of a zoom lens, the magnification at the wide-angle end). Then, when the magnification of the imaging lens and the magnification of the projection lens are the same, the relationship between the projection range on the screen and the imaging range is proportional to the size of the imaging range of the imaging sensor and the size of the display range on the display element.
  • the imaging range of the imaging lens is set to about 1.1 to 1.7 times the projection range on the screen
  • the size of the imaging range of the imaging sensor and the size of the display range on the display element are the same.
  • the combination of the image sensor and the display element may be determined so as to be about 1.1 times to 1.7 times.
  • the projected image shifts on the screen by ⁇ about D ⁇ M depending on the magnification M of the projection lens.
  • the imaging range is shifted by ⁇ about D ⁇ M depending on the magnification M of the imaging lens.
  • the ratio of the image projection range (interactive effective function target range) to the image pickup range is small, the resolution efficiency of the image pickup sensor becomes poor when used as an image pickup sensor for the interactive function.
  • FIG. 12B shows a state in which the telephoto end is used when the projection lens is a zoom lens and FIG. 12A is the wide-angle end.
  • FIG. 12B the same components as those in FIG. 12A are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 12B since FIG. 12A, which is the wide-angle end, already has an imaging range including the range of the projected image at all projection positions, even if the zoom of the projection lens is set to the telephoto end, it is always possible.
  • the state in which the imaging range 220 includes the projection range 210 of the projected image at all the projection positions by the lens shift function is maintained.
  • the ratio of the projection range 210 (interactive effective function target range) to the image pickup range 220 becomes smaller, so that the resolution efficiency of the image sensor becomes relatively poor for use in the image sensor for the interactive function. .. That is, at the telephoto end of the projection lens, the effective resolution efficiency of the image sensor is worse than at the wide-angle end.
  • the image pickup lens 191 may also be a zoom lens, and the zoom of the image pickup lens may be adjusted according to the zoom of the projection lens 101.
  • FIG. 12C shows an example in which the zoom of the projection lens is in the telephoto end and the zoom of the imaging lens is also in the telephoto end.
  • the same components as those in FIG. 12B are designated by the same reference numerals, and the description thereof will be omitted.
  • the effective resolution efficiency of the image pickup sensor is improved as compared with the example of FIG. 12B, and is equivalent to the example of FIG. 12A.
  • the zoom of the imaging lens may be manual or automatic, similar to the zoom of the projection lens. If it is auto, the zoom of the imaging lens may be controlled in conjunction with the zoom of the projection lens. In the case of manual operation, the user or the installer may manually adjust the position appropriately.
  • FIGS. 12A to 12C for the sake of simplicity, an example of only the horizontal lens shift has been described, but in the case of the vertical lens shift and the two-direction lens shift in the horizontal direction and the vertical direction. In the case of providing, the idea of the example of FIGS. 12A to 12C can be applied.
  • the image pickup sensor instead of moving the optical axis of the image pickup lens in the direction perpendicular to the optical axis, the image pickup sensor may be moved in the opposite direction. That is, since the relative positions of the image pickup sensor and the image pickup lens may be changed, the relative positions of the image pickup sensor and the image pickup lens that receive light through the image pickup lens are changed in conjunction with the displacement of the projection lens.
  • a position variable mechanism may be provided. In that case, the amount of change that changes the relative position by the position variable mechanism is equal to the amount of displacement of the projection lens.
  • FIGS. 12A to 12C can be adopted in the configuration described in FIG. 8 (a configuration in which a projection lens and an imaging lens (or a camera unit) are configured as an integrated lens unit and attached / detached in units of lens units). That is, the lens unit shown in FIG. 8 may include a slider and various mechanisms for the lens shift function described with reference to FIGS. 12A to 12C.
  • FIG. 13A the configuration of FIG. 13A is used in order to realize the miniaturization of the image sensor and the image lens while realizing the function of the configuration of FIG. 12A.
  • the same components as those in FIG. 12A are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 13A shows a lens shift that shifts the optical axis of the projection lens and the optical axis of the image pickup lens in conjunction with each other, but the shift amount of the optical axis of the image pickup lens is multiplied by the shift amount of the optical axis of the projection lens. It has a lens shift function.
  • the optical axis of the projection lens 101 is shifted in the horizontal direction by ⁇ D from the center of the display element 102, and at the same time, the optical axis of the image pickup lens 191 is ⁇ D with respect to the center of the image sensor 192. Shifts horizontally by / N. That is, the shift amount of the optical axis of the image pickup lens 191 is 1 / N times the shift amount of the optical axis of the projection lens 101.
  • FIG. 13A has, for example, the following configuration as a shift mechanism that realizes a displacement amount conversion of 1 / N times. That is, both a first slider 152 in which the position of the optical axis of the projection lens can be displaced in the horizontal direction and a second slider 153 in which the position of the optical axis of the imaging lens can be displaced in the horizontal direction are prepared.
  • a plurality of gears constituting a rack and pinion mechanism for interlocking the displacement of the slider and the rotation of the gears are provided, and the plurality of gears are related to the transmission gear 154. At least one of these sliders may be driven by a manual rotary gear or the like (not shown) that can convert the rotational torque into the displacement amount of the slider.
  • At least one slider may be driven by a stepping motor, and the displacement amount may be controlled to be electronically controlled. Since there are various known techniques for the configuration of the transmission gear 154 using the plurality of gears, those may be used, and detailed description thereof will be omitted.
  • the above configuration is an example, and another shift mechanism may be used as long as it is a shift that realizes a displacement amount conversion of 1 / N times.
  • the two sliders are each driven by a stepping motor, the displacement amount is electronically controlled, and the shift amount of the optical axis of the imaging lens is always the shift amount of the optical axis of the projection lens. It may be controlled so as to be 1 / N times as large as.
  • the optical axis of the projection lens is shifted by ⁇ D with respect to the projection type image device main body by the above-mentioned slide mechanism included in the lens shift mechanism.
  • the optical axis of the imaging lens shifts by ⁇ D / N with respect to the main body of the projection type imaging device.
  • the relative positions of the display element and the image sensor with respect to the main body of the projection type image device are fixed.
  • the image sensor uses a size of 1 / N times in the length direction (size of 1 / N squared in area) than the size of FIG. 12A.
  • the magnification of the image pickup lens is M ⁇ N
  • the relationship between the projection range on the screen and the image pickup range is the same as in FIG. 12A.
  • the size of the image pickup lens can be reduced as the size of the image pickup sensor becomes smaller. Therefore, in the configuration of FIG. 13A, the size of the image sensor is 1 / N times larger in the length direction than the size in the case of FIG. 12A, so that the image lens in FIG. 13A is smaller than the image lens in FIG. 12A. It is possible to realize the conversion. Since both the image pickup lens and the image pickup sensor can be manufactured at a lower cost as they are smaller, the configuration of FIG. 13A can realize a lower cost than the configuration of FIG. 12A.
  • the imaging lens, the imaging sensor, the projection lens, the display element, and the shift mechanism are configured as described above, so that when the shift amount of the optical axis of the projection lens is ⁇ D, projection is performed on the screen.
  • the projected image shifts by ⁇ about D ⁇ M depending on the magnification M of the lens.
  • the shift amount of the optical axis of the imaging lens is ⁇ D / N, and the imaging range is shifted by ⁇ about D ⁇ M on the screen depending on the magnification M ⁇ N of the imaging lens.
  • the size of the image sensor may be 1 / N times that of the case of FIG. 12A.
  • the shift amount of the optical axis of the imaging lens is always 1 / N times the shift amount of the optical axis of the projection lens, so that the same effect as in the case of FIG. And the image sensor can be made smaller and less costly.
  • FIG. 13B shows a state in which the telephoto end is used when the projection lens is a zoom lens and FIG. 13A is the wide-angle end.
  • the same components as those in FIG. 13A are designated by the same reference numerals, and the description thereof will be omitted.
  • the imaging range 220 includes the projection range 210 of all the projection positions by the lens shift function is always maintained.
  • the ratio of the projection range (interactive effective function target range) to the image pickup range becomes smaller, so that the resolution efficiency of the image pickup sensor becomes relatively poor for use in the image pickup sensor for the interactive function. That is, at the telephoto end of the projection lens, the effective resolution efficiency of the image sensor is worse than at the wide-angle end.
  • the image pickup lens 191 may also be a zoom lens, and the zoom of the image pickup lens may be adjusted according to the zoom of the projection lens 101.
  • the same components as those in FIG. 13B are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 13C shows an example in which the zoom of the projection lens is in the telephoto end and the zoom of the imaging lens is also in the telephoto end.
  • the effective resolution efficiency of the image sensor is improved as compared with the case of FIG. 13B, which is equivalent to the case of FIG. 13A.
  • the zoom of the imaging lens may be manual or automatic, similar to the zoom of the projection lens. If it is auto, the zoom of the imaging lens may be controlled in conjunction with the zoom of the projection lens. In the case of manual operation, the user or the installer may manually adjust the position appropriately.
  • FIGS. 13A to 13C for the sake of simplicity, an example of only a horizontal lens shift has been described, but in the case of a vertical lens shift and in the case of providing a lens shift in two directions of the horizontal direction and the vertical direction. Also, the ideas of FIGS. 13A to 13C can be applied.
  • the image sensor may be moved instead of moving the optical axis of the image pickup lens. That is, since the relative positions of the image pickup sensor and the image pickup lens may be changed, the relative positions of the image pickup sensor and the image pickup lens that receive light through the image pickup lens are changed in conjunction with the displacement of the projection lens.
  • a position variable mechanism may be provided. In that case, the amount of change that changes the relative position by the position variable mechanism is 1 / N times the amount of displacement of the projection lens.
  • FIGS. 13A to 13C can be adopted in the configuration described in FIG. 8 (a configuration in which a projection lens and an imaging lens (or a camera unit) are configured as an integrated lens unit, and the lens unit is attached and detached). That is, the lens unit shown in FIG. 8 may include a slider and various mechanisms for the lens shift function described with reference to FIGS. 13A to 13C.
  • one of the two sliders may be provided with an opening that does not optically interfere with imaging, and the imaging sensor may be arranged outside the two sliders.
  • FIG. 14A is a diagram illustrating another example of reducing the size and cost of the image sensor and the image lens while realizing the functions of the configuration of FIG. 13A.
  • the same components as those in FIG. 13A are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 14A when the optical axis of the projection lens is shifted by ⁇ D in the horizontal direction using the slider, the angle between the image pickup sensor and the image pickup camera including the image pickup lens is horizontal in conjunction with the shift of the optical axis of the projection lens.
  • a shift mechanism that changes ⁇ ⁇ ° in the direction is used. That is, the optical axis of the imaging lens is changed by ⁇ ⁇ °.
  • the image pickup camera 195 and the member fixed to the projection type image device main body are connected by a free joint such as a ball joint. Then, using the ball joint as a fulcrum 156, the angle of the imaging camera 195 can be changed. Further, a connecting portion 157 between the slider 155 and the imaging camera 195 is provided at a position on the image projection direction side of the fulcrum 156, and for example, the connecting portion 157 is configured by a ball joint bearing. The body portion of the image pickup camera 195 is slidable on the ball joint bearing.
  • connection portion 157 and the ball joint bearing may be referred to as a displacement angle conversion mechanism.
  • the optical axis of the projection lens 101 is shifted by ⁇ D with respect to the projection type image device main body by the above slide mechanism included in the lens shift mechanism.
  • the position of the display element 102 relative to the main body of the projection type video apparatus is fixed.
  • the angle of the optical axis of the imaging lens changes by ⁇ ⁇ with respect to the optical axis of the projection lens.
  • the image sensor rotates in conjunction with the variable optical axis of the image lens. That is, the relative position of the image sensor with respect to the image lens does not change, and the angle of the entire image camera 195 including the image lens and the image sensor is variable by ⁇ ⁇ with respect to the optical axis of the projection lens 101. It may be expressed that the entire image pickup camera 195 has an angle variable by ⁇ ⁇ from a predetermined installation direction (for example, the front direction of the projection type image display device) set by the projection type image display device.
  • one drive of the slider 155 of the lens shift mechanism shown in FIG. 14A may be driven by a manual rotary gear (not shown) that can convert the rotational torque into the displacement amount of the slider.
  • the slider 155 may be driven by a motor such as a stepping motor, and the displacement amount may be controlled electronically.
  • the angle change of the imaging camera may also be driven by a motor such as a stepping motor, and the displacement of the slider 155 and the angle change of the imaging camera 195 may be controlled to be linked. ..
  • the imaging range 220 of the imaging lens is trapezoidal on the screen as shown in the figure. It becomes a distorted shape. Therefore, when recognizing the projection range 210 using the image pickup camera 195, it is necessary to perform geometric transformation correction processing.
  • a technique may be used in which a projection type image display device is installed, the projection lens position of the shift mechanism is fixed at a desired position, and then the projected test pattern is imaged and calibrated.
  • variable rotation angle ⁇ is projected on the screen according to the magnification of the imaging lens, the shift amount ⁇ D of the projection lens, the size of the display element, and the magnification of the projection lens (in the case of a zoom lens, the magnification at the wide-angle end).
  • the projection range of the lens may be appropriately determined so as to always be included in the imaging range of the imaging lens.
  • a fulcrum (a free joint that connects the imaging camera to a member fixed to the projection type image device main body) and a slider
  • the setting of the distance L in the optical axis direction of the projection lens from the connecting portion (ball joint bearing) connecting the body of the imaging camera may be appropriately changed.
  • an appropriate variable rotation angle ⁇ must be set, and after trapezoidal distortion on the screen. It suffices to satisfy the two points that the imaging range on the screen covers the projection range.
  • the former point is determined by the shift amount ⁇ D of the projection lens and the setting of the distance L (first setting).
  • the latter point is determined by the magnification setting (second setting) of the image sensor and the image lens. Since the second setting can be set independently of the first setting, it can be set relatively freely as long as the size of the image sensor and the magnification of the image lens are within a realistic range. As a result, it becomes possible to use a smaller imaging sensor than the examples of FIGS. 11A to 11C and 12A to 12C, and it is possible to realize cost reduction.
  • FIG. 14B shows a state in which the telephoto end is used when the projection lens is a zoom lens and FIG. 14A is the wide-angle end.
  • FIG. 14B the same components as those in FIG. 14A are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 14B since FIG. 14A, which is the wide-angle side end, already has an imaging range 220 including the projection ranges 210 of all the projection positions, even when the zoom of the projection lens 101 is set to the telephoto side end, The state in which the imaging range 220 includes the projection range 210 of all the projection positions by the lens shift function is always maintained.
  • the ratio of the projection range (interactive effective function target range) to the image pickup range becomes smaller, so that the resolution efficiency of the image pickup sensor becomes relatively poor for use in the image pickup sensor for the interactive function. That is, at the telephoto end of the projection lens, the effective resolution efficiency of the image sensor is worse than at the wide-angle end.
  • the imaging lens may be a zoom lens, and the zoom of the imaging lens may be adjusted according to the zoom of the projection lens.
  • the same components as those in FIG. 14B are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 14C shows an example in which the zoom of the projection lens is in the telephoto end and the zoom of the imaging lens is also in the telephoto end.
  • the effective resolution efficiency of the image sensor is improved as compared with the example of FIG. 14B, which is equivalent to the example of FIG. 14A.
  • the zoom of the imaging lens may be manual or automatic in the same way as the zoom of the projection lens. If it is auto, the zoom of the imaging lens may be controlled in conjunction with the zoom of the projection lens. In the case of manual operation, the user or the installer may manually adjust the position appropriately.
  • FIGS. 14A to 14C for the sake of simplicity, an example of only shifting the lens of the projection lens in the horizontal direction and changing the angle of the optical axis of the imaging lens in the horizontal direction has been described, but the projection lens in the vertical direction
  • FIGS. The idea of the example of FIG. 14C can be applied.
  • FIGS. 14A to 14C can be adopted in the configuration described in FIG. 8 in which the projection lens and the camera unit are configured as an integrated lens unit and the lens unit is attached and detached. That is, the lens unit shown in FIG. 8 may include a slider and various mechanisms for the lens shift function described with reference to FIGS. 14A to 14C.
  • the influence of the resolution efficiency of the image sensor when it is used for the image sensor for the interactive function is mentioned.
  • the influence of the resolution efficiency of the image sensor is not limited to the interactive function application of the image sensor, and even when the image sensor is used for the focus adjustment application, the higher the resolution efficiency of the image sensor is, the more preferable. That is, in the embodiment of the present invention described above, the example of further increasing the resolution efficiency of the image pickup sensor is more suitable when the image pickup sensor is used for the focus adjustment application.
  • the present invention is not limited to the above-mentioned examples, and includes various modifications.
  • the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.
  • 11 Central axis of display element
  • 12 Optical axis of projection lens
  • 100 Projection type image display device
  • 101 Projection optical system (projection lens)
  • 102 Display element
  • 123 Camera unit
  • 124, 125 Lens unit
  • 154 transmission gear
  • 156 fulcrum
  • 157 connection part
  • 191 image pickup lens
  • 192 image pickup sensor
  • 193 image pickup lens identification part
  • 194 projection lens identification part.
  • 195 Imaging camera
  • 197 IC
  • 198 Switch
  • 200 Display surface (screen)
  • 201 Long focus lens
  • 202 Long focus imaging lens
  • 210 Projection range
  • 220 Imaging range
  • 291 Projection lens Mounting part
  • 292 Imaging lens mounting part (camera unit connection part)
  • 293 Lens unit mounting part
  • 301 Medium focus lens
  • 302 Medium focus imaging lens
  • 401 Ultra short focus lens
  • 402 Ultra short focus Imaging lens.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Controls And Circuits For Display Device (AREA)
PCT/JP2019/027132 2019-07-09 2019-07-09 投射型映像表示装置 Ceased WO2021005711A1 (ja)

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PCT/JP2019/027132 WO2021005711A1 (ja) 2019-07-09 2019-07-09 投射型映像表示装置
JP2021530398A JP7177936B2 (ja) 2019-07-09 2019-07-09 投射型映像表示装置
US17/617,930 US12044900B2 (en) 2019-07-09 2019-07-09 Projection type video display device
CN201980098312.1A CN114424118A (zh) 2019-07-09 2019-07-09 投射型影像显示装置

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210211584A1 (en) * 2020-01-05 2021-07-08 Ningbo Sunny Opotech Co., Ltd. Multi-Aperture Imaging System and Application Thereof
WO2024257479A1 (ja) * 2023-06-13 2024-12-19 パナソニックＩｐマネジメント株式会社 光学系、画像投写装置および撮像装置
JP2025109751A (ja) * 2021-05-24 2025-07-25 セイコーエプソン株式会社 プロジェクター

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006099115A (ja) * 2005-09-26 2006-04-13 Casio Comput Co Ltd 撮影機能付投射装置、及び投射画像撮影システム
JP2009219102A (ja) * 2008-02-13 2009-09-24 Seiko Epson Corp プロジェクタ、マルチスクリーンシステム、プロジェクタ制御方法、プロジェクタ制御プログラム、情報記憶媒体
JP2017129839A (ja) * 2016-01-20 2017-07-27 セイコーエプソン株式会社 プロジェクター
JP2017173488A (ja) * 2016-03-23 2017-09-28 セイコーエプソン株式会社 プロジェクター及びプロジェクターの制御方法
JP2017208677A (ja) * 2016-05-18 2017-11-24 セイコーエプソン株式会社 プロジェクター
JP2018085553A (ja) * 2016-11-21 2018-05-31 セイコーエプソン株式会社 プロジェクターシステム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3198630B2 (ja) * 1992-07-13 2001-08-13 セイコーエプソン株式会社 プロジェクター
JP2000241874A (ja) 1999-02-19 2000-09-08 Nec Corp プロジェクタの自動画面位置調整方法及び装置
JP2004093890A (ja) * 2002-08-30 2004-03-25 Canon Inc 投射型画像表示装置
JP3764976B2 (ja) 2003-10-10 2006-04-12 カシオ計算機株式会社 撮影機能付投射装置、及び投射画像撮影システム
JP5381416B2 (ja) * 2009-07-01 2014-01-08 リコーイメージング株式会社 プロジェクターシステム
JP4924755B2 (ja) * 2010-09-09 2012-04-25 株式会社ニコン 交換レンズ、カメラボディおよび電子機器
JP5637895B2 (ja) * 2011-02-24 2014-12-10 キヤノン株式会社 画像投射装置
US20130113975A1 (en) * 2011-11-04 2013-05-09 Peter Gabris Projector Image Correction Method and System
US9961318B2 (en) 2016-01-20 2018-05-01 Seiko Epson Corporation Projector
JP6728914B2 (ja) * 2016-04-11 2020-07-22 セイコーエプソン株式会社 投写システム、及びプロジェクターの制御方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006099115A (ja) * 2005-09-26 2006-04-13 Casio Comput Co Ltd 撮影機能付投射装置、及び投射画像撮影システム
JP2009219102A (ja) * 2008-02-13 2009-09-24 Seiko Epson Corp プロジェクタ、マルチスクリーンシステム、プロジェクタ制御方法、プロジェクタ制御プログラム、情報記憶媒体
JP2017129839A (ja) * 2016-01-20 2017-07-27 セイコーエプソン株式会社 プロジェクター
JP2017173488A (ja) * 2016-03-23 2017-09-28 セイコーエプソン株式会社 プロジェクター及びプロジェクターの制御方法
JP2017208677A (ja) * 2016-05-18 2017-11-24 セイコーエプソン株式会社 プロジェクター
JP2018085553A (ja) * 2016-11-21 2018-05-31 セイコーエプソン株式会社 プロジェクターシステム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210211584A1 (en) * 2020-01-05 2021-07-08 Ningbo Sunny Opotech Co., Ltd. Multi-Aperture Imaging System and Application Thereof
US11575844B2 (en) * 2020-01-05 2023-02-07 Ningbo Sunny Opotech Co., Ltd. Multi-aperture imaging system and application thereof
JP2025109751A (ja) * 2021-05-24 2025-07-25 セイコーエプソン株式会社 プロジェクター
WO2024257479A1 (ja) * 2023-06-13 2024-12-19 パナソニックＩｐマネジメント株式会社 光学系、画像投写装置および撮像装置

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JP7177936B2 (ja) 2022-11-24

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