WO2016113917A1 - 非接触入力装置及び方法 - Google Patents
非接触入力装置及び方法 Download PDFInfo
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- WO2016113917A1 WO2016113917A1 PCT/JP2015/052508 JP2015052508W WO2016113917A1 WO 2016113917 A1 WO2016113917 A1 WO 2016113917A1 JP 2015052508 W JP2015052508 W JP 2015052508W WO 2016113917 A1 WO2016113917 A1 WO 2016113917A1
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- light
- light emitting
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- image
- infrared
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04108—Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
Definitions
- the present invention relates to a non-contact input device and method that can form a real image in the air and can input a signal by operating an instruction means (for example, a finger) while viewing the real image (for example, a touch panel image) (that is, an indication position of a reproduction image) And non-contact detection apparatus and method).
- an instruction means for example, a finger
- viewing the real image for example, a touch panel image
- a matrix is formed by arranging a number of light emitting elements and light receiving elements in parallel along the XY axes directly above the display, and the surface of the display is touched with an obstacle such as a finger or a pen. In such a case, it has been proposed to detect the position where the obstacle is in contact with the display by crossing the matrix.
- Patent Document 3 discloses first and second light control panels in which a large number of first and second planar light reflecting portions are arranged in parallel and at regular intervals inside a transparent flat plate. Using the optical imaging means placed in contact with or close to each other so that the planar light reflecting portion is in an orthogonal state in plan view, the image on the display and the image on which the infrared rays are irregularly reflected on the display surface are simultaneously reproduced in the air as a reproduced image. There has been proposed a method and an apparatus for detecting the position of the display image on the display by detecting the position of the display means that is displayed and touching the display on the display with a two-dimensional infrared camera.
- Patent Document 4 a device has been proposed in which an optical sensor is built in a transistor shape surface constituting a liquid crystal panel to recognize the shape of multi-touch with a finger on the surface of the liquid crystal or the movement of a touch pen. Yes.
- Patent Document 3 there is a problem that an infrared light source, an infrared diffuse reflection surface, and an infrared camera are required in addition to the display panel, and the device configuration becomes more complicated. Furthermore, Patent Document 4 proposes an optical touch panel that includes a liquid crystal panel with a backlight and an optical sensor that detects that the liquid crystal panel has been touched by reflected light, but the touch panel is an aerial imaging type. Absent.
- a touch panel using a display is also used in ATMs and the like, it is not hygienic because an unspecified number of people touch the screen, and is not effective in preventing contact infection. Moreover, when light is irradiated toward the display, the reflected light is emitted from the display, and the display may be difficult to see.
- the present invention has been made in view of such circumstances, and an image to be formed is a spatial image that is not reflected light from another light source, and a specific position of the spatial image is pointed to by a pointing means such as a finger, a pointing stick, or a touch pen.
- An object of the present invention is to provide a non-contact input device and method capable of detecting the position and inputting a signal without physically touching the display.
- a non-contact input device has a plurality of light-emitting blocks, and a part or all of the light-emitting blocks intersects with a display in which a photosensor is incorporated in a plan view.
- a large number of first and second micro-reflecting surfaces are erected on the same plane, and the first reflected light from each first micro-reflecting surface is received by the corresponding second micro-reflecting surface.
- An optical imaging means for making the second reflected light An image of the display arranged on one side of the light image forming means is formed as a first real image on the other side of the light image forming means by the light image forming means and an instruction touching the first real image
- the image of the means for example, a finger or a touch pen
- the image displayed on the display includes a touch panel image, a keyboard image, and the like, but may be a normal color or black and white screen (image) (the same applies to the non-contact input method hereinafter).
- the optical sensor is an infrared sensor, and each of the light emitting blocks preferably includes an infrared light emitting unit and the infrared sensor in addition to a visible light emitting unit.
- a filter or the like is preferably used for the infrared sensor so as not to detect visible light.
- the optical sensor may be a visible light sensor.
- the optical sensor is an infrared sensor
- each of the light emitting blocks has the infrared sensor in addition to a visible light emitting unit, and touches the first real image.
- an infrared light emitting means for illuminating the indicating means from the light imaging means side may be provided separately from the display, and the position of the second real image may be detected by the infrared sensor.
- the visible light emitting section includes R light emitting means, G light emitting means, and B light emitting means.
- R means red
- G means green
- B means blue.
- the display is preferably a liquid crystal type. Therefore, a light source (backlight) is provided on the back side of the liquid crystal surface.
- a light source backlight
- the light emission block has an infrared light emission part
- the light source includes an infrared light emission source.
- the display may be a light emitting diode type.
- a light emitting part of visible light can use a light emitting diode of three primary colors, and an infrared light emitting part can use an infrared light emitting diode.
- the light imaging means may use one described in Japanese Patent No. 5036898, or two orthogonal light reflections described in Japanese Patent No. 4734652.
- Unit optical elements having surfaces may be arranged in a plane.
- a non-contact input method includes a first and a second that have a large number of light-emitting blocks, and that intersect with a display in which a light sensor is incorporated in a part or all of the light-emitting blocks in plan view.
- a plurality of minute reflection surfaces are arranged upright on the same plane, and the first reflected light from each of the first minute reflection surfaces is received by the corresponding second minute reflection surface to be second.
- optical imaging means for reflecting light An image of the display arranged on one side of the light imaging means is imaged as a first real image on the other side of the light imaging means by the light imaging means, and the first real image is touched.
- the position of the second real image formed on the side of the light image forming means by forming an image of the instruction means is detected by the optical sensor of the display.
- the light sensor is an infrared sensor
- each light emitting block includes an R light emitting means, a G light emitting means, and a B light emitting means, in addition to a visible light emitting portion. It is preferable that the infrared sensor is provided.
- each of the light emitting blocks may be provided with an infrared light emitting unit, and may further have an infrared light emitting means for irradiating infrared rays toward the instruction means, or these may be provided at the same time. You can also.
- the light emitted from the display (including infrared rays) or the infrared rays from the infrared light emitting means is preferably subjected to high frequency modulation to be distinguished from natural light.
- an image on a display is formed as a first real image in space by an optical imaging means, and an image of an instruction means that touches the first real image is optically imaged.
- the image is formed on one side of the light image forming means, for example, on the display as a second real image, and the position of the second real image is detected by the optical sensor, so that the position of the indicating means can be detected relatively easily.
- a special two-dimensional infrared camera or the like is not necessary. Even if the position of the display changes with respect to the optical imaging means, the image of the instruction means is formed on the original display.
- the position of the pointing means can be detected only by infrared rays regardless of changes in visible light.
- the infrared light is emitted from an infrared light emitting means separately provided, the structure of the display can be simplified.
- the conventional "light sensor liquid crystal pad" can be utilized for a display as it is.
- the display image is a keyboard or the like, it is preferable to provide a special light image (for example, a spotlight) on each keyboard image. Accordingly, the detection accuracy can be improved by matching the position of the optical sensor with the light image.
- the non-contact input device 10 is formed apart from the flat display 11 with an angle ⁇ of 30 to 60 degrees.
- 11 is provided with light image forming means 13 for receiving the image displayed on the image 11 and forming the image on the display 11 as a real image 12 at a symmetrical position.
- a flat plate-like display such as a normal liquid crystal display
- a three-dimensional display having a light source inside, or a display having irregularities only on one side such as a keyboard can be used as the display. (The same applies to the following examples).
- the light imaging means 13 uses a transparent material such as transparent plastic or glass as a main material
- the transparent material enters the transparent material from the air and emits the light from the transparent material into the air. Since the refraction caused by the material is generated, the position of the display 11 is determined in consideration of the refraction angle (the same applies to the following embodiments). Note that the position of the display with respect to the optical imaging means is somewhat free, and focusing is not necessary when using a lens system.
- the optical imaging means 13 is a flat plate-shaped first, t1 and t2 (for example, 0.1 to 5 mm), which are arranged in contact or close to each other.
- Second light control panels 14 and 15 are provided inside the first and second light control panels 14 and 15, a large number of strip-shaped planar light reflecting portions 18 and 19 are formed side by side at a constant pitch (p1, p2) perpendicular to one surface. .
- the planar light reflecting portions 18 and 19 of the first and second light control panels 14 and 15 are arranged so as to intersect with each other in a plan view (in an orthogonal state in this embodiment).
- the first and second light control panels 14 and 15 are formed of a transparent material such as glass or transparent plastic, except for the planar light reflecting portions 18 and 19.
- the planar light reflecting portions 18 and 19 are preferably made of a metal sheet having good reflection efficiency, vapor deposited metal, a metal sheet having an adhesive layer in the middle, or a mirror surface sheet, and both the front and back surfaces are reflecting surfaces.
- the present invention is applied even when only one surface is a reflecting surface.
- a method for manufacturing the optical imaging means 13 is described in, for example, WO2009 / 131128A1.
- metals having high reflection efficiency include aluminum, silver, titanium, nickel, and chromium.
- the pitches p1 and p2 of the planar light reflecting portions 18 and 19 are the same, and the thicknesses t1 and t2 of the first and second light control panels 14 and 15 are preferably the same for production efficiency.
- the pitch of the planar light reflecting portions 18 and 19 is treated as p, and the thickness of the first and second light control panels 14 and 15 is treated as t.
- the planar light reflecting portions 18 and 19 intersect to form a large number of square frames, as shown in the partially enlarged view of FIG.
- the aspect ratio ⁇ (height / width) of one frame (that is, one frame) is thickness (t) / pitch (p).
- the aspect ratio ⁇ is about 1 to 4.5, but in order to obtain a brighter real image 12 by being reflected by a single planar light reflecting portion 18 or 19 multiple times, 2.5 to 4.5 (more details) Is more than 3 and not more than 4.5).
- First and second minute reflecting surfaces 20 and 21 intersecting in plan view are formed at one frame portion of the first and second light control panels 14 and 15. A large number of the first and second minute reflecting surfaces 20 and 21 are erected on the same plane. Therefore, the light from the display 11 arranged on one side of the light imaging means 13 is reflected by each first minute reflecting surface 20 of the first light control panel 14 on the front side (display 11 side) ( The first reflected light) is further reflected by the corresponding second minute reflecting surface 21 (second reflected light), and the real image 12 is formed on the other side of the optical imaging means 13. This real image 12 is formed in the space and has the same size as the image 11 a formed on the display 11.
- the incident light and the reflected light include not only the case where the light is reflected only within one frame but also the case where the incident light and the reflected light are reflected by jumping over one frame.
- the display 11 is basically a liquid crystal type, and includes an R light emitting means 26, a G light emitting means 27, and a B light emitting means 28, which are examples of a backlight 24, a liquid crystal section 25, and a light emitting section for visible light.
- a plurality of cells (light emission blocks) 29 having the following (hereinafter also simply referred to as RGB light emitting means 26 to 28) have a display unit 30 arranged in a grid pattern.
- the R light emitting means 26, the G light emitting means 27, and the B light emitting means 28 do not emit light themselves, and when the light of the backlight 24 passes through the liquid crystal unit 25, R (red), G (green), B ( The part that emits light in blue) can be replaced with a simple color filter.
- the liquid crystal unit 25 has a well-known structure, and is supplied with power by strip-like transparent electrodes 31 and 32 arranged in a grid in the X and Y directions above and below, and is in cell units (ie, RGB) in a light shielding state and a light transmitting state.
- the light emission means can be controlled by 26 to 28 units.
- the cell 29 arranged in the display unit 30 has an infrared light emitting unit 33 and an infrared sensor 34 as an example of a light sensor in addition to the RGB light emitting means 26 to 28 in units of cells 29.
- strip-shaped transparent electrodes 36 and 37 that obtain optical signals from the infrared sensor 34 are arranged in a grid pattern above and below.
- reference numerals 39 to 41 and 41a denote transparent protective plate materials
- 42 denotes a deflection filter
- 43 denotes a barrier of each cell 29.
- the light source of the backlight 24 a light source including red, blue, and green visible light and including infrared light is used.
- the liquid crystal unit 25 is controlled using the transparent electrodes 31 and 32
- the infrared sensor 34 is controlled using the transparent electrodes 36 and 37.
- reference numeral 25a denotes a liquid crystal unit main body.
- the transparent electrodes 31, 32, 36, and 37 shown in FIG. 4 are shown in different directions from the transparent electrodes 31, 32, 36, and 37 shown in FIG. Therefore, the display 11 shown in FIG. 4 is a modification of the display 11 shown in FIG.
- the optical sensor may be provided in all of the light emitting blocks, or may be provided in a part of the light emitting blocks excluding a part.
- this display 11 will be described.
- the backlight 24 is turned on, when the liquid crystal unit 25 corresponding to (that is, directly below) the RGB light emitting means 26 to 28 and the infrared light emitting unit 33 in each cell 29 is turned on and off via the transparent electrodes 31 and 32, Visible light and infrared light are generated from one cell 29.
- an image 11 a can be formed on the display 11 and infrared light having a uniform illuminance is generated from the display 11.
- the light (r1 to r4) from the image 11a displayed on the display 11 enters the optical imaging means 13 as shown in FIG. 1, and a real image 12 (first real image, hereinafter the same) is formed on the other side. Is done.
- the display 11 and the real image 12 are formed to be bilaterally symmetric or vertically symmetric with respect to the optical imaging unit 13.
- the infrared rays emitted from the infrared light emitting portion 33 of the display 11 are formed in a planar shape and overlapped with the position of the real image 12, but cannot be visually recognized.
- ⁇ indicates that the first real image 12 (70) and the second real image 45a are formed symmetrically with respect to the optical imaging means 13.
- r1 to r4 and r1 ′ to r4 ′ denote infrared rays outside the infrared ray bundle that contribute to image formation.
- the infrared sensor 34 arranged on the display 11 detects the infrared image of the instruction means 45, thereby detecting which part of the real image 12 is pressed.
- the real image 12 is a keyboard or the like
- the pressed position of the keyboard can be detected. Therefore, the non-contact input device 10 does not require an external infrared light emitting unit or an infrared camera.
- the non-contact input device 50 is formed so as to be separated from a flat display 51 with an angle ⁇ of 30 to 60 degrees, and an image 11a displayed on the display 51 is input.
- Optical image forming means 13 for forming an image as a real image 12 at a symmetrical position is provided.
- FIG. 5A A partially enlarged view of the display 51 is shown in FIG. 5A, and a cross-sectional enlarged portion of the display 51 is shown in FIG.
- the display 51 of the non-contact input device 50 forms an image using a light emitting diode type instead of a liquid crystal type.
- the display 51 includes, in addition to the R light emitting means 52, the G light emitting means 53, and the B light emitting means 54 (visible light emitting parts) each formed of a light emitting diode, an infrared light emitting part 55 made of a light emitting diode, and a photodiode.
- a number of cells (light-emitting blocks) 58 having an infrared sensor (an example of an optical sensor) 56 made of the like are provided.
- the transparent electrode 61 may be opaque.
- Reference numeral 63 denotes a transparent protective plate, 64 denotes a protective plate, and 65 denotes a deflection filter.
- a visible light image including red, green and blue light and an infrared ray can be emitted from the display 51, and the image 11 a displayed on the display 51 is a space at a symmetrical position via the light imaging means 13.
- a real image 12 is formed.
- the reflected infrared image forms an infrared image (second real image 45 a) on the surface of the display 51 via the optical imaging unit 13, and the position can be detected by the infrared sensor 56. .
- the non-contact input device 67 according to the third embodiment of the present invention shown in FIG. 6 is formed so as to be separated from the flat display 68 with an angle ⁇ of 30 to 60 degrees and displayed on the display 68.
- the light image forming means 13 that receives light from 69 and forms the image 69 as a real image (first real image) 70 at a symmetrical position is provided.
- infrared light emitting means 71 for irradiating the entire real image 70 with infrared light is provided on the other side of the light imaging means 13.
- the infrared light emitting means 71 is composed of, for example, an infrared light emitting diode or an infrared lamp, and reliably illuminates the pointing means 45 that has touched the real image 70 from the light imaging means 13 side, and reflects the reflected light to the light imaging means 13. It has come to depart.
- the infrared light emitting means 71 does not irradiate light (infrared rays) toward the light imaging means 13 in principle.
- the display 68 has a large number of light emitting blocks (cells) 73, and each light emitting block 73 has an R light emitting means 74, a G light emitting means 75, and a B light emitting means 76. And an infrared sensor 77 which is an example of the optical sensor.
- the display 68 is a liquid crystal type, a liquid crystal part is provided at the bottom of the RGB light emitting means 74 to 76.
- the RGB light emitting means 74 to 76 are each formed of a light emitting diode. .
- the infrared light emitting means 71 irradiates the instruction means (finger, touch pen, etc.) 45 with infrared rays, and as shown in FIG.
- Some infrared reflected light passes through the optical imaging means 13 and forms an image on the display 68 as the second real image 45a.
- h2 and h4 indicate infrared rays passing through the optical imaging means 13 and passing outside.
- the position of the second real image 45 a is detected by the infrared sensor 77.
- the infrared signal from the infrared light emitting units 33 and 55 and the infrared light emitting means 71 is modulated in order to distinguish it from the external infrared light.
- the on / off signal or the waveform signal is preferable.
- the modulation is performed by controlling the liquid crystal.
- the power is supplied to the infrared light emitting unit (light emitting diode) 55.
- the power applied to the means 71 is modulated.
- the infrared sensors 34, 56, and 77 once convert the received infrared light into an electrical signal, and then select a necessary signal through a filter.
- infrared light is used in addition to visible light.
- the infrared light emitting unit does not exist in the cell, and has a visible light optical sensor instead of the infrared sensor. Therefore, the optical sensor type touch panel used for a normal personal computer can be diverted.
- it is preferable to modulate visible light and the optical sensor may detect only a part of the visible light.
- Infrared rays also include light rays having a wavelength longer than that of visible rays, such as far infrared rays.
- the present invention is not limited to the above-described embodiments, and for example, the present invention is also applied to a case where the configuration of a part of the non-contact input device according to the first to third embodiments is replaced.
- the shape and structure of the light emitting block (cell) have been specifically described. However, improvements and changes in shape can be made without changing the gist of the present invention.
- the RGB light emitting means is used. However, the order may be changed, colors other than RGB may be combined, and monochrome may be used.
- the non-contact input device and method according to the present invention (device and method for detecting the indication position of a reproduced image in a non-contact manner), when used for an operation panel of various machines, have an operation panel (for example, a keyboard or a touch panel).
- an operation panel for example, a keyboard or a touch panel.
- the non-contact input device and method according to the present invention can be optimally used not only for operation panels of factory machines but also for touch panels of mobile phones, personal computers, automobiles, ships, and the like.
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Abstract
Description
更に、特許文献4には、バックライト付きの液晶パネルと、液晶パネルにタッチしたことを反射光によって検知する光センサを備えた光学式タッチパネルが提案されているが、タッチパネルは空中結像式ではない。
また、ディスプレイに向けて光が照射されると、その反射光がディスプレイから放射され、ディスプレイが見にくい場合があった。
前記光結像手段の一側に配置された前記ディスプレイの画像を前記光結像手段によって前記光結像手段の他側に第1の実像として結像し、前記第1の実像に触れた指示手段(例えば、指やタッチペン)の画像を前記光結像手段の一側(通常はディスプレイ上)に第2の実像として結像させ、前記第2の実像の位置を前記ディスプレイの光センサで検知する。
前記光結像手段の一側に配置された前記ディスプレイの画像を、前記光結像手段によって前記光結像手段の他側に第1の実像として結像し、前記第1の実像に触れた指示手段(例えば、指やタッチペン)の画像が結像して前記光結像手段の一側にできる第2の実像の位置を、前記ディスプレイの光センサで検知する。
この非接触入力方法において、前記各発光ブロックは赤外線発光部を備えていることもでき、また前記指示手段に向けて赤外線を照射する赤外線発光手段を別に有することもできるし、これらを同時に設けることもできる。
また、光結像手段に対してディスプレイの位置が変わっても、指示手段の画像は元のディスプレイ上に結像する。
図1、図2に示すように、本発明の第1の実施例に係る非接触入力装置10は、平面状のディスプレイ11と30~60度の角度αを有して離れて形成され、ディスプレイ11に表示される画像を入光して対称位置にディスプレイ11の画像を実像12として結像する光結像手段13を備えている。なお、ここで、ディスプレイとしては通常の液晶ディスプレイのように平面板状のものの他に、内部に光源を有する立体状のもの、キーボードのように片側にのみ凹凸を有するものを使用することもできる(以下の実施例でも同じ)。また、光結像手段13が透明プラスチック、ガラス等の透明材を主要材料として使用している場合は、空気中から透明材に入光し、透明材から空気中に出光するときに、透明材の材質に起因する屈折を生じるので、屈折角を考慮してディスプレイ11の位置を決める(以下の実施例においても同じ)。なお、光結像手段に対するディスプレイの位置はある程度自由であり、レンズ系を用いる場合のピント合わせは必要でない。
ここで、図1に示すように、実像12の所定位置に指示手段45の一例である指(タッチペン、指示棒等でもよい)を入れると、指示手段45から赤外線の反射光が発生し、その画像が光結像手段13を介してディスプレイ11側(即ち、ディスプレイ11上)に第2の実像45aとして結像される。図1に示すように、指示手段45からの赤外線の反射光は、r1’、r3’の帰路で光結像手段13に入光し、光結像手段13で屈曲反射し、r2’、r4’の帰路を通って第2の実像45aを結像する。第2の実像45aは赤外線による結像であるので、目視できない。図1(図6も同じ)において、θは第1の実像12(70)と第2の実像45aが光結像手段13に対して対称に形成されることを示す。なお、r1~r4、r1’~r4’は結像に寄与する赤外線束の外側の赤外線を示す。
従って、この非接触入力装置10においては、外付けの赤外線発光部や赤外線カメラ等は必要でない。
図1、図2に示すように、この非接触入力装置50は、平面状のディスプレイ51と30~60度の角度αを有して離れて形成され、ディスプレイ51に表示される画像11aを入光して対称位置に実像12として結像する光結像手段13を備えている。
実像12に指示手段45で接触すると、その反射赤外線が光結像手段13を介してディスプレイ51の表面に赤外線画像(第2の実像45a)を結像し、赤外線センサ56によってその位置を検知できる。
なお、ディスプレイ68が液晶式の場合は、RGB発光手段74~76の底部に液晶部が設けられ、ディスプレイ68が発光ダイオード式の場合は、RGB発光手段74~76がそれぞれ発光ダイオードからなっている。
赤外線センサ34、56、77は受光した赤外線を一旦電気信号に変えた後、フィルタを通して必要信号を選択する。
この場合、可視光に変調をかけるのが好ましく、更に可視光の一部の光のみを光センサが検知するようにしてもよい。また、赤外線は可視光線より波長が長い光線、例えば、遠赤外線等も含む。
第1~第3の実施例では、発光ブロック(セル)の形状、構造を具体的に説明したが、本発明の要旨を変更しない範囲での改良、形状変更は可能である。
また、前記実施例においては、RGB発光手段を用いたが、順序は入れ換えてもよく、更にはRGB以外の色を組み合わせてもよいし、更にモノクロームであってもよい。
Claims (10)
- 多数の発光ブロックを有し、該発光ブロックの一部又は全部には光センサが組み込まれたディスプレイと、平面視して交差する第1、第2の微小反射面がそれぞれ同一平面上に多数立設して配置され、前記各第1の微小反射面からの第1の反射光を、対応する前記第2の微小反射面で受けて第2の反射光とする光結像手段とを備え、
前記光結像手段の一側に配置された前記ディスプレイの画像を前記光結像手段によって前記光結像手段の他側に第1の実像として結像し、前記第1の実像に触れた指示手段の画像を前記光結像手段の一側に第2の実像として結像させ、前記第2の実像の位置を前記ディスプレイの光センサで検知することを特徴とする非接触入力装置。 - 請求項1記載の非接触入力装置において、前記光センサは赤外線センサであって、前記各発光ブロックは、可視光の発光部の他に、赤外線発光部と前記赤外線センサとを有することを特徴とする非接触入力装置。
- 請求項1記載の非接触入力装置において、前記光センサは赤外線センサであって、前記各発光ブロックは、可視光の発光部の他に前記赤外線センサを有し、前記第1の実像に触れた前記指示手段を前記光結像手段の側から照らす赤外線発光手段を前記ディスプレイとは別に備え、前記第2の実像の位置を前記赤外線センサによって検知することを特徴とする非接触入力装置。
- 請求項2又は3記載の非接触入力装置において、前記可視光の発光部がR発光手段、G発光手段、及びB発光手段を有することを特徴とする非接触入力装置。
- 請求項1~4のいずれか1記載の非接触入力装置において、前記ディスプレイは液晶式であることを特徴とする非接触入力装置。
- 請求項1~4のいずれか1記載の非接触入力装置において、前記ディスプレイは発光ダイオード式であることを特徴とする非接触入力装置。
- 多数の発光ブロックを有し、該発光ブロックの一部又は全部には光センサが組み込まれたディスプレイと、平面視して交差する第1、第2の微小反射面がそれぞれ同一平面上に多数立設して配置され、前記各第1の微小反射面からの第1の反射光を、対応する前記第2の微小反射面で受けて第2の反射光とする光結像手段とを用い、
前記光結像手段の一側に配置された前記ディスプレイの画像を、前記光結像手段によって前記光結像手段の他側に第1の実像として結像し、前記第1の実像に触れた指示手段の画像が結像して前記光結像手段の一側にできる第2の実像の位置を、前記ディスプレイの光センサで検知することを特徴とする非接触入力方法。 - 請求項7記載の非接触入力方法において、前記光センサは赤外線センサであって、前記各発光ブロックは、R発光手段、G発光手段、及びB発光手段を有する可視光の発光部の他に前記赤外線センサを備えていることを特徴とする非接触入力方法。
- 請求項8記載の非接触入力方法において、前記各発光ブロックは赤外線発光部を備えていることを特徴とする非接触入力方法。
- 請求項7又は8記載の非接触入力方法において、前記指示手段に向けて赤外線を照射する赤外線発光手段を有していることを特徴とする非接触入力方法。
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