WO2014162420A1 - 虚像表示装置 - Google Patents
虚像表示装置 Download PDFInfo
- Publication number
- WO2014162420A1 WO2014162420A1 PCT/JP2013/059883 JP2013059883W WO2014162420A1 WO 2014162420 A1 WO2014162420 A1 WO 2014162420A1 JP 2013059883 W JP2013059883 W JP 2013059883W WO 2014162420 A1 WO2014162420 A1 WO 2014162420A1
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- WO
- WIPO (PCT)
- Prior art keywords
- virtual image
- display device
- combiner
- image display
- portable terminal
- Prior art date
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- 238000003384 imaging method Methods 0.000 claims description 3
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
- B60R11/0235—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes of flat type, e.g. LCD
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B27/0101—Head-up displays characterised by optical features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
- B60R2011/0035—Sun visors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
- B60R2011/0049—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for non integrated articles
- B60R2011/005—Connection with the vehicle part
- B60R2011/0059—Connection with the vehicle part using clips, clamps, straps or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
- B60R2011/008—Adjustable or movable supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/20—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used
- B60R2300/205—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used using a head-up display
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- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
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- G02B2027/0127—Head-up displays characterised by optical features comprising devices increasing the depth of field
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- G02B2027/013—Head-up displays characterised by optical features comprising a combiner of particular shape, e.g. curvature
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- G02B2027/0161—Head-up displays characterised by mechanical features characterised by the relative positioning of the constitutive elements
Definitions
- the present invention relates to a technique for displaying a virtual image.
- Patent Document 1 discloses an information display device that can be attached to a vehicle and used as a head-up display, and can be detached from the vehicle and used as a portable information display device. In addition, when the information display device described in Patent Document 1 detects that it is used as a head-up display, the video on the display screen is inverted and displayed.
- the information display device described in Patent Document 1 is a dedicated machine capable of displaying as a portable information display device and displaying as a head-up display.
- the head-up display can be configured as appropriate by using the display on the display of a mobile terminal such as a mobile phone held by the user.
- the main object of the present invention is to provide a virtual image display device capable of displaying a virtual image using a mobile terminal.
- the virtual image display device includes a holding unit that detachably holds a portable terminal having a display surface for displaying an image, and reflects light that constitutes the image, and the observer uses the image as a virtual image. And a base part to which the holding means and the combiner are coupled.
- FIG. 1 schematically shows a virtual image display system according to a first embodiment.
- the front view of a portable terminal is shown.
- 1 shows a schematic configuration of a mobile terminal. It is the figure which showed typically the side view of the virtual image display apparatus with which the portable terminal was mounted
- maintenance part at the time of reversing a holder is shown.
- the state before and after removing a portable terminal is shown.
- (A) shows the front view of the portable terminal which displayed the guidance image according to classification information
- the side view of the virtual image display system which shows the positional relationship of a display, a combiner, and a virtual image is shown.
- the positional relationship between a certain object point, a combiner, and a virtual image is schematically shown. It is a graph which shows the relationship between the distance a and the distance b when the curvature in the reflective surface of a combiner is constant. It is a graph which shows the relationship between the distance b when the distance a is made constant, and the curvature radius r of a combiner.
- An example of a driver's field of view including a combiner is shown.
- (A) shows a front view of the portable terminal when the vehicle is inclined with respect to the horizontal direction by a predetermined angle.
- FIG. B shows the example of a display of the virtual image visually recognized via a combiner.
- the side view of the virtual image display apparatus of the accommodation state which concerns on 5th Example is shown.
- the side view of the virtual image display apparatus which concerns on 5th Example of the state which displays a virtual image is shown.
- (A) shows a side view of the virtual image display device when the reflecting portion is rotated about 90 degrees counterclockwise.
- (B) shows the side view of the virtual image display apparatus after rotating a reflection part and a portable terminal holding
- the side view of the virtual image display apparatus which concerns on the modification 2 is shown.
- the side view of the virtual image display apparatus which concerns on the modification 3 is shown.
- the side view of the virtual image display apparatus installed in the dashboard is shown.
- the side view of the virtual image display apparatus which concerns on the modification 8 is shown.
- the virtual image display device includes a holding unit that detachably holds a portable terminal having a display surface for displaying an image, and reflects light that constitutes the image, and displays the image as a virtual image.
- a combiner that is visually recognized by an observer, and a base portion to which the holding means and the combiner are coupled.
- the virtual image display device includes a holding unit, a combiner, and a base unit.
- the holding means detachably holds a portable terminal having a display surface for displaying an image.
- a combiner reflects the light which comprises the image which a portable terminal displays, and makes an observer visually recognize the said image as a virtual image.
- the holding means and the combiner are coupled to the base portion.
- the virtual image display device has a configuration in which the mobile terminal can be freely attached and detached, and uses the mobile terminal as a light source. Therefore, the virtual image display apparatus can make a viewer visually recognize a virtual image suitably using a viewer's portable terminal.
- the base portion is connected to a ceiling portion of the vehicle or a mounting means that can be attached to a sun visor equipped on the ceiling portion.
- the base portion includes a connection member that rotatably connects the base portion to the attachment means.
- the holding unit holds the mobile terminal in a direction in which a normal direction of the display surface of the mobile terminal passes above a center point of the reflection surface of the combiner. According to this aspect, the portable terminal is suitably held so as to widen the observer's head clearance.
- the combiner has a concave reflecting surface whose curvature gradually increases from the upper part to the lower part. According to this aspect, even when the display surface of the mobile terminal is tilted upward from the center of the combiner, it is possible to suppress the display of the width of the upper end portion of the virtual image being shorter than the width of the lower end portion. . In addition, the entire virtual image can be viewed with an appropriate sense of distance.
- the curvature of the reflecting surface gradually changes so that the imaging distance of the virtual image at the lower part becomes longer than the upper part. According to this aspect, when displaying a virtual image indicating information of an object that is farther from the current position as it approaches the lower end of the virtual image, it is possible for the observer to appropriately view the virtual image with a sense of distance in accordance with the content.
- the holding unit is rotatably coupled to the base unit so that a display surface of a portable terminal held by the holding unit is directed to the combiner side and the observer side.
- the observer can suitably operate the display surface of the mobile terminal facing the front.
- the holding unit is coupled to the base unit with a configuration in which a distance from the combiner can be changed. According to this aspect, the observer's head clearance can be suitably adjusted.
- the virtual image display device transmits information related to a type of the virtual image display device, which is a basis for performing control for switching a mode of an image displayed on the display surface by the mobile terminal. And transmitting means for transmitting information relating to the type to the portable terminal when the holding means and the portable terminal are within a predetermined distance.
- the virtual image display device can cause the mobile terminal to appropriately determine the display mode of the guide image so that the observer can appropriately visually recognize the virtual image.
- the virtual image display device includes a reflection unit that is coupled to the base portion and reflects light constituting an image displayed on the display surface by the portable terminal toward the combiner.
- the holding means holds the display surface of the portable terminal toward the reflecting means. According to this aspect, the virtual image display device can suppress left-right reversal of the image and virtual image displayed by the mobile terminal.
- the holding unit holds the display surface of the mobile terminal substantially parallel to the base portion. According to this aspect, the virtual image display device can suitably generate the observer's head clearance.
- the holding means may be rotatably attached to the base portion so that the display surface of the portable terminal held by the holding means is directed to the reflecting means side and the observer side.
- the observer when using the mobile terminal, the observer can suitably operate the display surface of the mobile terminal facing the front.
- the reflection means is coupled to the base portion so as to be rotatable in the same direction as the rotation direction of the holding means, and the holding means is capable of rotating the reflection means. It rotates in conjunction with the rotation of the reflecting means within a predetermined angle range of the angle range.
- the display surface of the portable terminal can be preferably directed to the front.
- the combiner is coupled to the base portion in a configuration that allows the distance to the observer to be changed. According to this aspect, the observer can suitably adjust the display position of the virtual image and the size of the virtual image.
- the combiner is provided with a light shielding member that blocks or attenuates external light from a direction in which the observer visually recognizes the virtual image. According to this aspect, the virtual image display device can make a virtual image be viewed appropriately even when the amount of light output by the mobile terminal is relatively low with respect to external light.
- rotation includes a case where the movement direction can be both clockwise and counterclockwise, and also includes a case where the movable range (angle) is limited.
- FIG. 1 schematically shows a virtual image display system according to a first embodiment.
- the virtual image display system includes a mobile terminal 100 having a display 110 and a virtual image display device 200 that displays a display on the display 110 of the mobile terminal 100 as a virtual image “Iv”.
- FIG. 1 is a side view of the driver's seat of the vehicle, and the driver sits on a seat in the passenger compartment.
- a roof (sheet metal) 27 that forms the outer frame of the vehicle, and below that is a ceiling 28 that is the interior of the passenger compartment.
- the mobile terminal 100 is a mobile terminal such as a smartphone or iPad (registered trademark), and is held by the virtual image display device 200 with the display 110 facing the windshield 25. Then, the mobile terminal 100 displays on the display 110 an image (also referred to as “guidance image Im”) for assisting driving such as a map around the current position and a route to the destination.
- an image also referred to as “guidance image Im”
- the virtual image display device 200 is installed obliquely upward in front of the driver, and the terminal device 100 is detachable.
- the virtual image display device 200 mainly includes a base unit 3, a combiner 5, a mobile terminal holding unit 7, an arm 8, and a clip unit 9.
- the base part 3 is formed in a plate shape, and a portable terminal holding part 7, an arm 8 holding the combiner 5, and a clip part 9 are attached thereto.
- the direction in which the base portion 3 extends is the “X-axis direction”
- the direction perpendicular to the base portion 3 is the “Z-axis direction”
- the direction perpendicular to the X-axis direction and the Z-axis direction is the “Y-axis direction”.
- Direction, and the positive direction of each axis is determined in the direction shown in FIG. 1 and FIG.
- the combiner 5 is a half mirror. When light emitted from the display 110 of the mobile terminal 100 is irradiated while external light from the front of the vehicle is transmitted, the irradiated light is directed to the driver's eye point “Pe”. It is an optical member that makes the observer visually recognize the virtual image Iv by partially reflecting. Note that the tip of the arrow in the virtual image Iv indicates the upward direction.
- the display light reflecting surface of the combiner 5 has a concave shape. Thereby, the combiner 5 displays the virtual image Iv in an enlarged manner.
- the arms 8 are a pair of support members attached to both ends of the base portion 3 in the Y-axis direction. The arms 8 extend in the direction of the windshield 25 and sandwich the combiner 5.
- the portable terminal holding unit 7 holds the portable terminal 100 with the display 110 of the portable terminal 100 facing the combiner 5.
- a short-range wireless communication tag 6 illustrated in FIG. 4 to be described later is provided on the surface of the mobile terminal holding unit 7 in contact with the back surface of the mobile terminal 100.
- the portable terminal holding unit 7 is an example of the “holding unit” in the present invention.
- the near field communication tag 6 is a tag capable of near field communication such as NFC (Near Field Communication).
- NFC Near Field Communication
- the short-range wireless communication tag 6 is information corresponding to the type of the virtual image display device 200 (also referred to as “type information Ik”).
- the type information Ik is information for the mobile terminal 100 to determine the display mode on the display 110 of the guide image Im, and details will be described later.
- the clip portion 9 is attached to the upper surface of the base portion 3 facing the ceiling 28, and the base portion 3 is attached to the sun visor 29 with the sun visor 29 sandwiched therebetween.
- the clip portion 9 is a plate-like elastic body having a substantially J-shaped cross section, and has an elastic force that urges the sun visor 29 in the direction of nipping.
- the clip part 9 is an example of the “attachment means” in the present invention.
- FIG. 2 shows a front view of the mobile terminal 100.
- the portable terminal 100 is a portable terminal that can be carried by a user, and includes a display 110 on which a touch panel 120 is stacked.
- FIG. 3 shows a schematic configuration of the mobile terminal 100.
- the mobile terminal 100 includes an output unit 11, an input unit 12, a storage unit 13, a communication unit 14, a GPS reception unit 15, a tilt detection unit 16, and a control unit 17.
- Each element of the portable terminal 100 is connected to each other via a bus (not shown) so that necessary information can be transmitted between the elements.
- the output unit 11 includes a display 110, a speaker (not shown), and the like, and outputs information for responding to the operation of the user of the mobile terminal 100 based on the control of the control unit 17.
- the input unit 12 includes a touch panel 120, and is an interface that accepts input of necessary commands and information performed by the terminal user to the portable terminal 100, that is, an operation.
- the input unit 12 may include keys, switches, buttons, voice input devices, and the like for inputting various commands and data.
- the storage unit 13 stores a program for controlling the operation of the mobile terminal 100 and holds information necessary for the operation of the mobile terminal 100. Further, the storage unit 13 stores information on the size of the display 110 and the like.
- the communication unit 14 transmits / receives data to / from other devices according to a predetermined protocol.
- the communication unit 14 performs wireless communication with the short-range wireless communication tag 6 illustrated in FIG. 4 in a state where the mobile terminal 100 is attached to the mobile terminal holding unit 7, and the short-range wireless communication tag 6 receives the type information Ik.
- the GPS reception unit 15 generates information on the current position of the mobile terminal 100 by receiving radio waves carrying downlink data including positioning data from a plurality of GPS satellites, and transmits the information to the control unit 17.
- the inclination detection unit 16 is an acceleration sensor or a gyro sensor, for example, and detects the inclination of the mobile terminal 100. Then, the inclination detection unit 16 transmits the generated detection signal to the control unit 17. In addition to the inclination in the direction in which the mobile terminal 100 in front view of FIG. 2 is rotated, the inclination detection unit 16 is inclined in the direction in which the mobile terminal 100 is rotated about the longitudinal direction or the short direction of the mobile terminal 100. May also be detected.
- the control unit 17 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like (not shown), and executes application software stored in the storage unit and so on. Various controls are performed on each of the components. For example, based on the type information Ik received from the virtual image display device 200, the control unit 17 determines the display mode of the guide image Im so that the observer can preferably visually recognize the virtual image Iv. This control method will be described in detail in the [Display Control Method] section.
- FIG. 4 is a diagram schematically showing a side view of the virtual image display device 200 to which the mobile terminal 100 is attached.
- FIG. 5 is a perspective view of the virtual image display device 200 to which the mobile terminal 100 is attached. 4 and 5, the mobile terminal 100 is held by the mobile terminal holding unit 7 in a horizontally long state, that is, in a state where the longitudinal direction of the mobile terminal 100 is parallel to the Y axis.
- guide portions 31 for sliding the arm 8 in the X-axis direction are provided on both side surfaces of the base portion 3 in the Y-axis direction.
- a groove is formed in the guide portion 31 along the X-axis direction.
- a sliding portion 32 to which one end of the arm 8 is connected is slidably fitted into the guide portion 31 in a direction along the X-axis direction (see arrows 23x and 23y in FIG. 4).
- the slide portion 32 is provided with a restriction portion 320 that restricts the movement range of the slide portion 32 to the range where the groove of the guide portion 31 is formed.
- the restricting portion 320 is fixed to the slide portion 32 in a state of being inserted into the groove of the guide portion 31 and is movable in the X-axis direction along the groove of the guide portion 31.
- the arm 8 is rotatable in the vertical direction of the virtual image display device 200 (see arrows 24x and 24y in FIG. 4) with the end connected to the slide portion 32 as an axis. Further, the end of the arm 8 opposite to the above-described end holds the combiner 5 so as to be rotatable about the Y axis (see arrows 25x and 25y in FIG. 4).
- the user can suitably adjust the position of the combiner 5 in the X-axis direction by operating the slide portion 32.
- the display position and size of the virtual image Iv vary depending on the distance between the combiner 5 and the display 110 on which the display image is displayed. Therefore, the user can suitably adjust the display position and size of the virtual image Iv by adjusting the position of the combiner 5 in the X-axis direction using the slide portion 32.
- the user can adjust the position of the combiner 5 suitably by adjusting the attachment angle of the arm 8 with respect to the slide part 32 and the attachment angle with respect to the arm 8 of the combiner 5.
- FIG. Therefore, the virtual image display device 200 can suitably cope with the difference in the height of the ceiling of the vehicle to which the virtual image display device 200 is attached or the physique of the user.
- the portable terminal holding unit 7 includes an installation unit 70, a hinge unit 71, a first arm 72, a second arm unit 74, and a holder 75.
- the installation part 70 is provided in the base part 3.
- the installation portion 70 is provided with a hinge portion 71 that holds the first arm 72 rotatably around the Y axis (see arrows 20x and 20y in FIG. 4).
- the end of the first arm 72 opposite to the hinge portion 71 is joined to the second arm 74.
- the second arm 74 is joined to the first arm 72 so as to be rotatable about the Y axis (see arrows 21x and 21y in FIG. 4).
- the second arm 74 is connected to the back surface of the holder 75 substantially perpendicularly.
- the holder 75 holds the mobile terminal 100.
- the holder 75 includes a support part 75a that supports the mobile terminal 100 and a movable part 75b that extends from the support part 75a.
- the end portion 750b of the movable portion 75b is accommodated in the support portion 75a.
- the movable part 75b is slidable in the direction which pinches
- the holder 75 can hold the portable terminal 100 suitably regardless of the size of the portable terminal 100.
- the short-range wireless communication tag 6 is provided on the surface of the support portion 75a facing the mobile terminal 100.
- the short-range wireless communication tag 6 is disposed at a position where the mobile terminal 100 can communicate with the communication unit 14 of the mobile terminal 100 in a state where the mobile terminal 100 is attached to the mobile terminal holding unit 7.
- the mounting angle of the first arm 72 with respect to the installation portion 70 can be adjusted, and the mounting angle of the second arm 74 with the first arm 72 can be adjusted.
- the user can manually adjust the position of the display 110 of the mobile terminal 100 to a position suitable for visually recognizing the virtual image Iv.
- the display position and size of the virtual image Iv vary depending on the distance between the combiner 5 and the display 110. Therefore, the user can suitably adjust the display position and size of the virtual image Iv by adjusting the distance of the holder 75 and the portable terminal 100 from the combiner 5 with this configuration.
- the holder 75 is a portable terminal in such a direction that the normal direction of the display 110 (see arrow 28 in FIG. 4) passes above the center point of the reflecting surface of the combiner 5 (see broken line 29 in FIG. 4). Hold 100. Thereby, it can prevent that the holder 75 and the portable terminal 100 protrude with respect to a user's head, and can fully provide a head clearance.
- the second arm 74 can rotate about 180 degrees with respect to the first arm 72 in the direction of the arrow 21x in FIG. 4, whereby the holder 75 causes the display 110 of the mobile terminal 100 to be set to the eye point Pe. Hold in a pointed state. This will be described with reference to FIG.
- FIG. 6 shows a side view of the mobile terminal 100 held by the mobile terminal holding unit 7 when the holder 75 is reversed from the state shown in FIG.
- the display 110 of the mobile terminal 100 is fixed in a state where it is directed to the eye point Pe. Therefore, the user can operate the mobile terminal 100 while directly viewing the display 110 in a state where the mobile terminal 100 is mounted on the mobile terminal holding unit 7.
- FIG. 7 shows a state before and after removing the portable terminal 100 by sliding the movable portion 75b of the holder 75 from the state of FIG.
- the movable part 75b and the portable terminal 100 before removing the portable terminal 100 are indicated by broken lines.
- the user slides the movable portion 75 b in the direction of separating the movable portion 75 b from the support portion 75 a (see the arrow 22 x). Thereby, the portable terminal 100 can be suitably removed from the holder 75.
- the control unit 17 executes a predetermined application for displaying the guide image Im, and determines the display mode of the guide image Im based on the type information Ik received from the short-range wireless communication tag 6.
- the type information Ik is, for example, information on the necessity of inverting the guide image Im, information indicating whether the mobile terminal 100 is held in portrait or landscape, information on the size of the combiner 5, and combiner 5 Information on the distance between the mobile terminal holding unit 7, information on the mounting angle of the mobile terminal 100 with respect to the combiner 5, information on the size of the mobile terminal 100 that can be held by the mobile terminal holding unit 7, and information on the curvature of the combiner.
- the value which may be changed based on user operation such as the distance of the above-mentioned combiner 5 and the portable terminal holding
- the control unit 17 determines whether the guidance image Im needs to be reversed, the direction of the guidance image Im, the size of the guidance image Im, the display position of the guidance image Im on the display 110, and the guidance image.
- the vertical and horizontal expansion / contraction ratio (namely, aspect ratio) of Im is determined. A specific example will be described with reference to FIG.
- FIG. 8A shows a front view of the mobile terminal 100 displaying the guide image Im
- FIG. 8B shows a virtual image Iv visually recognized by the user via the combiner 5 in the example of FIG. Show.
- the control unit 17 determines that the virtual image Iv visually recognized via the combiner 5 is based on the type information Ik received from the short-range wireless communication tag 6 with respect to the guide image Im. Recognize that it is displayed horizontally reversed. Therefore, in this case, as shown in FIG. 8A, the control unit 17 displays the guide image Im on the display 110 in advance by being horizontally reversed. As described above, the control unit 17 can recognize the necessity of inversion of the guide image Im based on the type information Ik, and can make the user appropriately recognize the virtual image Iv.
- control unit 17 recognizes whether the display 110 is held vertically or horizontally based on the type information Ik, and determines the direction of the guide image Im according to the recognition result. Specifically, when the portable terminal 100 is held in a vertically long state, the control unit 17 matches the vertical direction of the guide image Im with the longitudinal direction of the display 110 and holds the portable terminal 100 in a horizontally long state. In this case, the vertical direction of the guide image Im is matched with the short direction of the display 110. Note that the control unit 17 may determine the direction of the guide image Im based on the output of the inclination detection unit 16 instead of the type information Ik.
- control unit 17 determines the size of the guide image Im in the display 110 based on the size information of the combiner 5 included in the type information Ik and the size information of the display 110 stored in the storage unit 13. To do.
- the storage unit 13 stores in advance a map or the like indicating an appropriate size of the guide image Im for each combination of the size of the combiner 5 and the size of the display 110, and the control unit 17 stores the map.
- the size of the guide image Im is determined by referring to it. In the example of FIGS.
- the control unit 17 displays the guide image Im on the entire surface of the display 110, the entire guide image Im is not projected onto the combiner 5 (that is, the guide image Im And the guide image Im is reduced by a predetermined rate and displayed on the display 110.
- the control part 17 can make a user visually recognize suitably the whole guide image Im as the virtual image Iv.
- the control unit 17 determines the display position of the guide image Im in the display 110 based on the attachment angle of the mobile terminal 100 with respect to the combiner 5 included in the type information Ik.
- the storage unit 13 stores in advance a map or the like indicating the display position of the appropriate guide image Im for each attachment angle or the like of the portable terminal 100 with respect to the combiner 5, and the control unit 17 refers to the map.
- the display position of the guide image Im is determined.
- the control unit 17 recognizes that the virtual image Iv is shifted to the lower left than the center of the combiner 5 when the guide image Im is displayed at the center of the display 110.
- the guide image Im is displayed by shifting to the upper right in advance.
- the control part 17 can display suitably the virtual image Iv according to the center of the combiner 5.
- the control unit 17 determines the aspect ratio of the guide image Im based on the type information Ik.
- the storage unit 13 stores in advance a map or the like indicating an appropriate aspect ratio of the guide image Im for each attachment angle of the mobile terminal 100 included in the type information Ik, and the control unit 17 The aspect ratio of the guide image Im is determined with reference to the map.
- the control unit 17 recognizes that the virtual image Iv is displayed by being contracted by a predetermined rate in the vertical direction with respect to the guide image Im based on the type information Ik. Im is displayed with an aspect ratio that is longer than the normal aspect ratio by a predetermined ratio in the vertical direction. Thereby, the control part 17 can make a user visually recognize the virtual image Iv with an appropriate aspect ratio.
- the control unit 17 may change the display mode of the guide image Im based on the input to the input unit 12.
- the control unit 17 receives an input for correcting the display position, aspect ratio, and the like of the guide image Im by the input unit 12, and changes the display mode of the guide image Im based on the input.
- the control part 17 can adjust suitably the display mode of the virtual image Iv according to a user preference.
- the virtual image display device 200 includes the mobile terminal holding unit 7, the combiner 5, and the base unit 3.
- the portable terminal holding unit 7 detachably holds the portable terminal 100 having the display 110 that displays the guide image Im.
- the combiner 5 reflects light constituting the guide image Im displayed on the mobile terminal 100 and causes the viewer to visually recognize the image as a virtual image Iv that overlaps the front landscape.
- Base portion 3 is coupled to portable terminal holding portion 7 and combiner 5.
- the virtual image display device 200 has a configuration in which the mobile terminal 100 is detachable, and uses the mobile terminal 100 as a light source. Therefore, the virtual image display apparatus can make a user visually recognize the virtual image Iv suitably using a user's portable terminal 100.
- control unit 17 in addition to the display control of the guide image Im of the first example, the control unit 17 preferably performs keystone correction of the guide image Im. Thereby, the control part 17 displays the image displayed on the said area
- FIG. 9 is a side view of the virtual image display system showing the positional relationship among the display 110, the combiner 5, and the virtual image Iv.
- the portion of the guide image Im displayed on the upper end in the display 110 is referred to as “upper end image portion”, and the portion of the guide image Im displayed on the lower end in the display 110 is referred to as “lower end image portion”.
- the distance “a1” between the upper end image portion and the position of the combiner 5 on which the upper end image portion is projected is greater than the distance “a2” between the lower end image portion and the position of the combiner 5 on which the lower end image portion is projected. long. Therefore, the distance “b1” between the position of the combiner 5 where the upper end image portion is projected and the position where the virtual image Iv corresponding to the upper end image portion is imaged is the position of the combiner 5 where the lower end image portion is projected and the lower end image portion. Is longer than the distance “b2” from the position at which the virtual image Iv corresponding to is formed.
- the portion of the virtual image Iv corresponding to the lower end image portion is displayed larger than the portion of the virtual image Iv corresponding to the upper end image portion. Therefore, when the rectangular guide image Im is displayed, the virtual image Iv is displayed in a trapezoid whose upper end portion is short.
- the control unit 17 displays the image displayed in the area smaller as the area of the display 110 closer to the combiner 5. Specifically, the control unit 17 recognizes the tilt of the display 110 with respect to the Z axis based on the output of the tilt detection unit 16 and corrects the trapezoid of the guide image Im according to the recognized tilt of the display 110. In this case, for example, the control unit 17 refers to the map of the correction amount of the trapezoid correction of the guide image Im appropriate for each inclination of the display 110 stored in advance in the storage unit 13, thereby correcting the keystone of the guide image Im. Do.
- control unit 17 refers to the information on the inclination of the combiner 5 included in the type information Ik, calculates the relative inclination of the display 110 with respect to the combiner 5, and determines the relative inclination. Accordingly, the keystone correction of the guide image Im may be performed.
- FIG. 10 schematically shows a positional relationship among an object point P1, a combiner 5, and a virtual image Iv of an object. Thereafter, the distance between the object point P1 and the combiner 5 is “a”, the distance between the virtual image Iv and the combiner 5 is “b”, the focal length of the reflecting surface of the combiner 5 is “f”, and the curvature of the reflecting surface of the combiner 5 is set. Let the radius be “r”.
- the distances a and b and the focal length f have a relationship defined by the following formula (1) based on the imaging formula.
- the focal length f of the reflecting surface of the combiner 5 is 1 ⁇ 2 of the radius of curvature r of the reflecting surface of the combiner 5.
- FIG. 11 is a graph showing the relationship between the distance a and the distance b in FIG. 10 when the radius of curvature r on the reflecting surface of the combiner 5 is constant.
- the distance b between the combiner 5 and the virtual image Iv increases as the distance a between the combiner 5 and the object point P1 increases.
- the distances a1 and a2 in FIG. 9 correspond to the distance a in FIG. 10
- the distances b1 and b2 in FIG. 9 correspond to the distance b in FIG.
- the distance b2 corresponding to the lower end image portion is shorter than the distance b1 corresponding to the upper end image portion.
- the control unit 17 performs trapezoidal correction of the guide image Im so that the display width is narrowed from the upper end to the lower end of the guide image Im. Thereby, the control part 17 can make a user visually recognize the virtual image Iv suitably.
- the combiner 5 of the virtual image display device 200 has a concave reflecting surface whose curvature gradually increases from the upper part to the lower part.
- the virtual image display device 200 prevents the virtual image Iv from being distorted into a trapezoid and makes the entire virtual image Iv uniform distance from the eye point Pe so that the virtual image Iv is visually recognized.
- FIG. 12 is a graph showing the relationship between the distance b and the radius of curvature r of the combiner 5 when the distance a is constant in the example of FIG.
- the distance b and the radius of curvature r have a negative correlation. Therefore, in the third embodiment, the radius of curvature r of the reflecting surface of the combiner 5 is reduced from the upper part to the lower part so as to cancel out the distance b becoming shorter toward the lower part of the combiner 5 due to the inclination of the portable terminal 100 with respect to the combiner 5. Gradually becomes smaller. Thereby, the virtual image Iv can be visually recognized by setting the entire virtual image Iv to a uniform distance from the eye point Pe.
- FIG. 13 shows an example of the driver's field of view including the combiner 5.
- the virtual image display system displays a route image 90 indicating a route planned to travel as a virtual image Iv at a position where the road in the landscape serving as the route is vertically inverted with respect to the horizon.
- the lower end image portion (see the broken line frame 95) of the route image 90 indicates a road at a position far from the current position
- the upper end image portion (see the broken line frame 96) of the route image 90 is the current position.
- a road at a position relatively close to the position is shown.
- the distance b ⁇ b> 1 corresponding to the upper end image portion of the root image 90 is the distance corresponding to the lower end image portion of the root image 90. It becomes longer than b2.
- the upper end image portion of the route image 90 corresponding to the road near the current position is displayed at a position relatively far from the eye point Pe, and the lower end image of the route image 90 corresponding to the road far from the current position.
- the part is displayed at a position relatively close to the eye point Pe. Therefore, in this case, the virtual image Iv is displayed against the sense of distance that the virtual image Iv should indicate.
- the radius of curvature r is gradually reduced with the reflecting surface of the combiner 5 facing from the top to the bottom. Therefore, it is possible to prevent the distance b between the combiner 5 and the virtual image Iv from becoming shorter at the lower part of the combiner 5 due to the inclination of the portable terminal 100 with respect to the combiner 5.
- the combiner 5 and the virtual image Iv corresponding to the upper end image portion have a distance b1 shorter than the distance b2 between the combiner 5 and the virtual image Iv corresponding to the lower end image portion.
- the radius of curvature r may be gradually reduced with the reflecting surface 5 being directed from the top to the bottom. That is, in this case, the lower part of the combiner 5 due to the inclination of the portable terminal 100 with respect to the combiner 5 surpasses the distance b between the combiner 5 and the virtual image Iv, and the combiner 5 changes the curvature of the reflecting surface of the combiner 5.
- the distance b between the combiner 5 and the virtual image Iv is made longer at the lower part of 5. Accordingly, the lower part of the virtual image Iv can be displayed farther from the eye point Pe, and the user can more realistically recognize the route image 90 of FIG.
- the type information Ik includes information related to the curvature of the combiner 5, and the control unit 17 of the portable terminal 100 determines the current position at a position where the curvature radius r of the combiner 5 is small based on the information related to the curvature of the combiner 5.
- the display position on the display 110 may be changed so that an image desired to be associated with a position far away from the image is projected.
- the control unit 17 detects the horizontal tilt of the display 110 with respect to the horizontal direction, and the guide image Im is in the opposite direction to the tilt of the display 110 by the tilt. Rotate to Thereby, the control part 17 displays the virtual image Iv suitably, without inclining right and left with respect to a horizontal direction, even if it is drive
- the virtual image display device 200 may tilt left and right (that is, in the roll direction) with respect to the horizontal direction together with the vehicle.
- the control unit 17 detects the tilt in the roll direction made by the display 110 with respect to the horizontal direction based on the output of the tilt detection unit 16 and the like, and the guide image Im is set as the tilt of the display 110 by the tilt. Rotate in the opposite direction.
- FIG. 14 (A) shows a front view of the mobile terminal 100 when the vehicle is tilted counterclockwise with respect to the horizontal direction by an angle “ ⁇ ”.
- FIG. 14B shows a display example of the virtual image Iv visually recognized through the combiner 5.
- the display 110 tilts counterclockwise by an angle ⁇ with respect to the horizontal direction, and as shown in FIG. 14B, the combiner 5 moves from the horizontal direction by an angle ⁇ . Tilt clockwise.
- the control unit 17 detects that the display 110 is tilted counterclockwise by an angle ⁇ from the horizontal direction based on the output of the tilt detection unit 16, and the guide image Im is rotated clockwise by the opposite direction. Rotate relative to display 110 by ⁇ .
- the left-right direction of the guide image Im is parallel to the horizontal direction.
- the virtual image Iv is in the horizontal direction. It is displayed without tilting.
- control unit 17 can cause the virtual image Iv to be visually recognized by the user without tilting the virtual image Iv even when the vehicle is traveling on an unpaved road or the like.
- the control unit 17 favors the virtual image Iv without the virtual image Iv being inclined. Can be visually recognized by the user.
- the mobile terminal 100 is installed substantially parallel to the base unit 3. Thereby, a driver
- FIG. 15 shows a side view of the virtual image display device 200A in the housed state according to the fifth embodiment
- FIG. 16 shows a side view of the virtual image display device 200A in a state of displaying the virtual image Iv.
- the virtual image display device 200 ⁇ / b> A includes a base portion 3, a reflection portion 4, a combiner 5, a portable terminal holding portion 7 ⁇ / b> A, an arm 8, and a clip portion 9.
- the same components as those of the virtual image display apparatus 200A similar to the virtual image display apparatus 200 according to the first embodiment are appropriately denoted by the same reference numerals, and the description thereof is omitted.
- the short-range wireless communication tag 6 (not shown) is disposed at a position where the mobile terminal 100 can communicate with the communication unit 14 of the mobile terminal 100 in a state where the mobile terminal 100 is attached to the mobile terminal holding unit 7A.
- the reflection unit 4 has a mirror 40 for reflecting the emitted light from the display 110 toward the combiner 5.
- the reflection unit 4 is rotatable about the Y axis with the rotation shaft portion 41 as an axis.
- the rotating shaft portion 41 is supported by a support portion 38 provided on the surface of the base portion 3 opposite to the surface on which the clip portion 9 is provided.
- the reflection part 4 has the stopper 42 for fixing the reflection part 4 with respect to 7 A of portable terminal holding
- the mirror 40 is an example of the “reflecting means” in the present invention.
- the mobile terminal holding unit 7A holds the mobile terminal 100 substantially parallel to the base unit 3.
- the mobile terminal holding unit 7 ⁇ / b> A has a pair of arms 76 that hold the mobile terminal 100 from both side surfaces of the mobile terminal 100.
- the portable terminal holding portion 7A has a rotation shaft (not shown) that is rotatably fixed to the support portion 38, and is rotatable within a range of about 90 degrees in the counterclockwise direction from the state of FIG.
- the portable terminal holding portion 7A has a fitting portion 78 that can be fitted to the stopper 42.
- the fitting portion 78 is fitted with the stopper 42 when the tip of the stopper 42 comes into contact with a predetermined pressure.
- the stopper 42 is detached from the fitting portion 78 when a predetermined stress is applied so as to remove the fitting.
- the reflection unit 4 is rotated to a position where the mirror 40 is substantially parallel to the base unit 3. Thereby, when not using virtual image display device 200A, head clearance can be secured suitably.
- the reflecting unit 4 is rotated counterclockwise by a predetermined angle from the state of FIG. Thereby, as shown in FIG. 16, the mirror 40 is fixed at a position facing the display 110 and reflecting the light of the display 110 to the combiner 5.
- the virtual image display device 200 ⁇ / b> A can cause the display light of the portable terminal 100 installed substantially parallel to the base unit 3 to be incident on the combiner 5 and display the virtual image Iv to the user.
- the virtual image display device 200 ⁇ / b> A configures the guide image Im at the eye point Pe by reflecting the guide image Im with the mirror 40 and then reflecting the reflected light with the combiner 5. Make light incident. Therefore, in this case, unlike the case of the virtual image display device 200 of the first to fourth embodiments, the control unit 17 does not need to invert the guide image Im in advance and display it on the display 110.
- the type information Ik of the short-range wireless communication tag 6 (not shown) includes information indicating that there is no need to invert the guide image Im, and the control unit 17 of the mobile terminal 100 uses the type information Ik.
- the guide image Im is displayed on the display 110 without being horizontally reversed.
- FIG. 17A shows a side view of the virtual image display device 200A when the reflecting section 4 is rotated about 90 degrees counterclockwise from the state of FIG.
- the stopper 42 is in contact with the fitting portion 78, and the fitting portion 78 and the stopper 42 are fitted. Thereby, the reflection part 4 and the portable terminal holding
- FIG. 17B is a side view of the virtual image display device 200A after the reflection unit 4 and the portable terminal holding unit 7A are rotated about 45 degrees counterclockwise from the state of FIG. 17A.
- the fitting portion 78 and the stopper 42 are fitted, the reflecting portion 4 and the portable terminal holding portion 7A are rotated by the same angle from the state of FIG.
- the portable terminal holding portion 7A is locked with respect to the support portion 38 of the base portion 3. Therefore, in this case, the user can preferably operate the mobile terminal 100 while viewing the display 110 in front.
- the virtual image display device 200A includes a GPS receiver, and the measured information is transmitted to the mobile terminal 100 by wireless communication. You may send it. Thereby, even if it is a case where the GPS receiving part 15 of the portable terminal 100 cannot measure, the information of the present position can be suitably acquired by the portable terminal 100.
- a receiving antenna that receives radio waves from a GPS satellite may be arranged on a dashboard of a vehicle, and may be connected to a GPS receiver of the virtual image display device 200A by a cable.
- the virtual image display device 200A may include various sensors such as a gyro, an acceleration sensor, and a distance sensor in addition to the GPS receiver, and may be capable of independent positioning.
- the virtual image display device 200A may be able to acquire various vehicle information such as vehicle speed pulses from the vehicle. These forms are not limited to the fifth embodiment, and are effective in the first to fourth embodiments.
- the virtual image display apparatus 200 can cause the mobile terminal 100 to suitably perform route guidance and the like by transmitting the acquired information to the mobile terminal 100.
- the control unit 17 further determines whether the display 110 is in the state directed toward the combiner 5 or the state directed toward the eye point Pe. Based on the guide image Im, it is preferable to switch between left and right inversion and non-inversion. Specifically, the control unit 17 reverses the guide image Im in the horizontal direction in the state of FIG. 4 in which the display 110 is directed to the combiner 5, and guides in the state of FIG. 6 in which the display 110 is directed to the eye point Pe. The image Im is not reversed.
- the tilt detection unit 16 is an acceleration sensor capable of detecting the acceleration in the thickness direction of the mobile terminal 100.
- the control unit 17 monitors the output of the inclination detection unit 16 when it is determined that the vehicle Ve is accelerating based on the output of the GPS reception unit 15. Specifically, the control unit 17 recognizes that the vehicle Ve is moving forward when the vehicle Ve is moving at a predetermined speed (for example, 20 km / h) or more, and monitors the rate of change in the speed of the vehicle Ve. Thus, when it is determined that the vehicle is accelerating in the forward direction, the output of the inclination detector 16 is monitored. Then, the control unit 17 determines whether the acceleration indicated by the output of the tilt detection unit 16 is the direction of the display 110 or the direction of the back surface 130.
- a predetermined speed for example, 20 km / h
- the control unit 17 determines whether the acceleration indicated by the output of the tilt detection unit 16 is the direction of the display 110 or the direction of the back surface 130.
- control part 17 determines with the display 110 being the state which was orient
- the control unit 17 determines that the display 110 is directed toward the eye point Pe when the acceleration indicated by the output of the tilt detection unit 16 is an acceleration with the direction of the display 110 being negative.
- the control unit 17 indicates that the acceleration indicated by the output of the tilt detection unit 16 is an acceleration in which the direction of the display 110 is negative. In this case, it can be determined that the display 110 is directed to the combiner 5.
- the control unit 17 once determines the orientation of the display 110 described above, based on the output of the tilt detection unit 16 until it detects that the mobile terminal 100 is removed from the mobile terminal holding unit 7. Whether or not the orientation of the display 110 has been switched may be recognized by determining whether or not the screen is reversed horizontally.
- the control unit 17 determines whether or not the user's face is reflected in an image generated by a camera (not shown) included in the mobile terminal 100, and the user's face is reflected in the image. In this case, it may be determined that the user faces the surface of the mobile terminal 100 provided with the camera. For example, when the camera 17 is provided on the display 110 side of the mobile terminal 100 and the user's face is image-recognized, the control unit 17 recognizes that the display 110 is directed to the eye point Pe. The control unit 17 may authenticate the presence / absence of the face in the image and the user's face using various known face recognition techniques. Also by this, the control part 17 can determine the direction of the display 110 suitably.
- control unit 17 switches the guide image Im between the left and right direction inversion and non-inversion, so that the user can keep the mobile terminal 100 attached to the virtual image display device 200 while the mobile terminal 100 is attached. Even in the case of operation, an image can be appropriately displayed on the display 110.
- the control unit 17 detects that the mobile terminal 100 is attached to the mobile terminal holding unit 7 by receiving a radio signal including the type information Ik from the short-range wireless communication tag 6. Instead of this, or in addition to this, the control unit 17 is executing a predetermined navigation application for displaying the guide image Im, and the portable terminal 100 is being charged. The terminal 100 may be recognized as being attached to the portable terminal holding unit 7 and the guidance image Im may be reversed.
- FIG. 18 shows a side view of a virtual image display device 200B according to this modification.
- the virtual image display device 200 ⁇ / b> B includes a charging unit 78 and a cable 79.
- the charging unit 78 is provided on the back surface of the holder 75 and receives power from a cable 79 connected to a cigar charger or the like to charge the mobile terminal 100.
- the charging unit 78 may be a wireless power feeder that complies with, for example, the Qi standard.
- a power supply connector to the mobile terminal 100 may be used instead of the wireless power supply.
- the short-range wireless communication tag 6 (not shown) is disposed at a position where the mobile terminal 100 can communicate with the communication unit 14 of the mobile terminal 100 in a state where the mobile terminal 100 is attached to the mobile terminal holding unit 7A.
- the portable terminal 100 is charged when placed on the virtual image display device 200B. Accordingly, when the control unit 17 is executing a predetermined navigation application for displaying the guide image Im and the mobile terminal 100 is being charged, the mobile terminal 100 is attached to the mobile terminal holding unit 7. It can be suitably determined that it is present.
- the combiner 5 may have a light shielding plate at a position that blocks external light from the direction in which the virtual image Iv is visually recognized by the user. Thereby, even if ambient external light is strong, the fall of the visibility of the virtual image Iv is suppressed suitably.
- FIG. 19 shows a side view of a virtual image display device 200C according to this modification.
- the virtual image display device 200 ⁇ / b> C is provided with a light shielding plate 50 so as to cover a surface opposite to the reflective surface of the combiner 5.
- the light shielding plate 50 blocks all or part of the light incident on the combiner 5 from the direction in which the virtual image Iv is visually recognized by the user.
- the virtual image display device 200 ⁇ / b> C can allow the user to visually recognize the virtual image Iv even when the luminance of the guide image Im is relatively low with respect to external light.
- the virtual image display systems according to the first to fifth embodiments use the guide image Im displayed on the display 110 of the mobile terminal 100 as an intermediate image, it is difficult to ensure sufficient luminance. Therefore, according to this modification, the virtual image Iv can be suitably viewed by the user.
- the light shielding plate 50 may be freely opened and closed with respect to the combiner 5.
- the light shielding plate 50 can freely rotate in a range from the position in FIG. 19 to a position along the arm 8, and is placed at a position along the arm 8 when not in use.
- the control unit 17 detects that the light shielding plate 50 is closed with respect to the combiner 5 based on an output from a sensor (not shown) that detects the open / close state of the light shielding plate 50 with respect to the combiner 5.
- the brightness of the guide image Im may be lowered. Thereby, the power consumption of the portable terminal 100 can be suppressed suitably.
- the light shielding plate 50 can be opened and closed based on a control signal transmitted from the control unit 17, and the control unit 17 shields the light when the remaining charge of the battery of the mobile terminal 100 becomes a predetermined amount or less.
- a control signal may be transmitted to the light shielding plate 50 so that the plate 50 is closed with respect to the combiner 5.
- the installation unit 70 of the mobile terminal holding unit 7 may be slidable in the X-axis direction with respect to the base unit 3.
- the base 3 is provided with a rail for the installation unit 70 to slide, and the installation unit 70 is slidably fitted to the rail.
- the portable terminal holding part 7 has a configuration that can slide in the X-axis direction, the user can suitably adjust the head clearance, and the distance between the display 110 and the combiner 5 can be suitably adjusted. Can be adjusted.
- the virtual image display device 200 was attached to the sun visor 29.
- the mounting position of the virtual image display device 200 to which the present invention is applicable is not limited to this. Instead, the virtual image display device 200 may be installed on a dashboard.
- FIG. 20 shows a side view of the virtual image display device 200D when installed on the dashboard.
- the virtual image display device 200 ⁇ / b> D has a configuration in which the virtual image display device 200 except the clip unit 9 of the first embodiment is vertically inverted.
- the base part 3 is fixed on the dashboard.
- the portable terminal 100 is mounted in the portable terminal holding
- virtual image display device 200D can make a user visually recognize virtual image Iv based on guidance image Im which display 110 of personal digital assistant 100 outputted. it can.
- the virtual image display device 200 may be attached to the ceiling 28 instead of the sun visor 29.
- the virtual image display device 200 has, on the upper surface of the base portion 3, a member that fits into an attachment hole (not shown) provided in the ceiling 28 for installing the sun visor 29 instead of the clip portion 9.
- the virtual image display device 200 may include a reflecting mirror (not shown) that does not transmit external light instead of the combiner 5. In this case, even if the brightness of the guide image Im is relatively low with respect to outside light, the virtual image Iv can be suitably viewed by the user.
- the clip portion 9 of the virtual image display device 200 is attached to the base portion 3.
- the clip portion 9 and the base portion 3 may be connected by a rotatable connecting member.
- FIG. 21 shows a side view of the virtual image display device 200 according to this modification.
- the clip portion 9 is connected to a ball link 35 provided on the base portion 3.
- the ball link 35 holds the clip portion 9 so as to be rotatable with respect to the base portion 3.
- the ball link 35 is an example of the “connecting member” in the present invention. According to such a configuration, even when the virtual image display device 200 is attached to a vehicle in which the sun visor 29 is tilted from the horizontal, the combiner 5 is tilted by rotating the base unit 3 with respect to the clip unit 9. It can install suitably, without.
- the member fitted into the mounting hole provided in the ceiling 28 and the base portion 3 may be connected by a rotatable connecting member.
Abstract
Description
上記虚像表示装置の他の一態様では、前記保持手段は、前記携帯端末の表示面の法線方向が前記コンバイナの反射面の中心点より上方を通過する向きで前記携帯端末を保持する。この態様により、携帯端末が観察者のヘッドクリアランスを広くするように好適に保持される。
[ヘッドアップディスプレイの構成]
図1は、第1実施例に係る虚像表示システムを模式的に示す。図1に示すように、虚像表示システムは、ディスプレイ110を有する携帯端末100と、携帯端末100のディスプレイ110の表示を虚像「Iv」として表示させる虚像表示装置200とを有する。なお、図1は、車両の運転席を側方から見た図であり、運転者は車室内のシートに座っている。運転者の頭上には車両の外枠を形成するルーフ(板金)27があり、その下方には車室の内装である天井28がある。また、運転者の前方には車両のフロントガラス25がある。
次に、携帯端末100の構成について説明する。図2は、携帯端末100の正面図を示す。携帯端末100は、利用者が持ち運び可能な携帯型端末であって、タッチパネル120が積層されたディスプレイ110を有する。
次に、虚像表示装置200の詳細な構成について、図4、図5を参照して説明する。図4は、携帯端末100が装着された虚像表示装置200の側面図を模式的に示した図である。また、図5は、携帯端末100が装着された虚像表示装置200の斜視図である。図4、5では、携帯端末100は、横長の状態、即ち携帯端末100の長手方向がY軸と平行な状態で携帯端末保持部7に保持されている。
まず、コンバイナ5の位置調整に関する機構について説明する。
次に、携帯端末100の位置調整に関する機構について、引き続き図4、図5を参照して説明する。
次に、携帯端末100の制御部17が実行する表示制御方法について説明する。制御部17は、案内画像Imを表示するための所定のアプリケーションを実行し、近距離無線通信タグ6から受信した種別情報Ikに基づき、案内画像Imの表示態様を決定する。
第2実施例では、第1実施例の案内画像Imの表示制御に加えて、制御部17は、好適に、案内画像Imの台形補正を行う。これにより、制御部17は、コンバイナ5に近いディスプレイ110の領域ほど、当該領域に表示する画像を小さく表示する。
なお、以下の式(2)に示すように、コンバイナ5の反射面の焦点距離fは、コンバイナ5の反射面の曲率半径rの1/2となる。
そして、式(1)、(2)によれば、コンバイナ5の反射面での曲率半径rが一定の場合、コンバイナ5と虚像Ivとの距離bは、コンバイナ5と物点P1との距離aに応じて変化する。
第3実施例では、第2実施例に代えて、又はこれに加えて、虚像表示装置200のコンバイナ5は、上部から下部にかけて曲率が徐々に大きくなる凹面状の反射面を有する。これにより、虚像表示装置200は、虚像Ivが台形に歪むのを防ぐとともに、虚像Ivの全体をアイポイントPeから均一な距離にして虚像Ivを視認させる。
第4実施例では、第1~第3実施例に加えて、制御部17は、ディスプレイ110の水平方向に対する左右の傾きを検知し、当該傾き分だけ案内画像Imをディスプレイ110の傾きと逆方向に回転させる。これにより、制御部17は、一例として未舗装の道路等を走行中であっても、水平方向に対して左右に傾くことなく虚像Ivを好適に表示する。
第5実施例では、携帯端末100は、ベース部3と略平行に設置される。これにより、運転者のヘッドクリアランスを好適に確保する。
以下、第1~第5実施例に好適な各変形例について説明する。なお、これらの各変形例は、任意に組み合わせて上述の各実施例に適用することが可能である。
第1~第4実施例において、制御部17は、ディスプレイ110がコンバイナ5に向けられた状態であるか、又は、アイポイントPeに向けられた状態であるかをさらに判定し、その判定結果に基づき、案内画像Imの左右方向の反転及び非反転を切り替えるとよい。具体的には、制御部17は、ディスプレイ110がコンバイナ5に向けられた図4の状態では案内画像Imを左右方向に反転させ、ディスプレイ110がアイポイントPeに向けられた図6の状態では案内画像Imを反転させない。
第1実施例では、制御部17は、近距離無線通信タグ6から種別情報Ikを含む無線信号を受信することで、携帯端末100が携帯端末保持部7に装着されたことを検知した。これに代えて、又は、これに加えて、制御部17は、案内画像Imを表示するための所定のナビゲーションのアプリケーションを実行中であり、かつ、携帯端末100が充電中である場合に、携帯端末100が携帯端末保持部7に装着されていると認識し、案内画像Imの反転処理等を行ってもよい。
コンバイナ5は、ユーザにより虚像Ivが視認される方向からの外光を遮る位置に遮光板を有してもよい。これにより、周囲の外光が強い場合であっても、虚像Ivの視認性の低下を好適に抑制する。
図4の説明において、携帯端末保持部7の設置部70は、ベース部3に対してX軸方向にスライド自在であってもよい。この場合、例えば、ベース部3には設置部70がスライドするためのレールが設けられ、設置部70は、当該レールに対して、スライド自在に嵌め込まれる。このように、携帯端末保持部7がX軸方向にスライド自在な構成を有することで、利用者は、ヘッドクリアランスを好適に調整することができると共に、ディスプレイ110とコンバイナ5との距離を好適に調整することができる。
虚像表示装置200は、サンバイザ29に取り付けられていた。しかし、本発明が適用可能な虚像表示装置200の取り付け位置は、これに限定されない。これに代えて、虚像表示装置200は、ダッシュボードに設置されてもよい。
虚像表示装置200は、コンバイナ5に代えて、外光を透過しない反射鏡(不図示)を備えるものであってよい。この場合、案内画像Imの輝度が外光に対して相対的に低い場合であっても、虚像Ivをユーザに好適に視認させることができる。
第1~第4実施例において、虚像表示装置200のクリップ部9はベース部3に取り付られていた。これに代えて、クリップ部9とベース部3は、回転可能な接続部材により接続されていてもよい。
12 入力部
13 記憶部
14 通信部
15 傾き検知部
16 GPS受信部
17 制御部
100 携帯端末
110 ディスプレイ
120 タッチパネル
200、200A~200D 虚像表示装置
Claims (15)
- 画像を表示する表示面を有する携帯端末を着脱自在に保持する保持手段と、
前記画像を構成する光を反射し、当該画像を虚像として観察者に視認させるコンバイナと、
前記保持手段および前記コンバイナが結合するベース部と、
を備えることを特徴とする虚像表示装置。 - 前記ベース部は、車両の天井部、または天井部に装備されたサンバイザへ取り付け可能な取り付け手段に接続されていることを特徴とする請求項1に記載の虚像表示装置。
- 前記ベース部は、当該ベース部を前記取り付け手段に対して回転可能に接続する接続部材を備えることを特徴とする請求項2に記載の虚像表示装置。
- 前記保持手段は、前記携帯端末の表示面の法線方向が前記コンバイナの反射面の中心点より上方を通過する向きで前記携帯端末を保持することを特徴とする請求項2または3に記載の虚像表示装置。
- 前記コンバイナは、上部から下部にかけて曲率が徐々に大きくなる凹面状の反射面を有することを特徴とする請求項4に記載の虚像表示装置。
- 前記反射面は、上部よりも下部における虚像の結像距離が長くなるように曲率が徐変することを特徴とする請求項5に記載の虚像表示装置。
- 前記保持手段は、当該保持手段が保持する携帯端末の表示面を前記コンバイナ側、および前記観察者側に向けられるように回転自在に前記ベース部に結合されていることを特徴とする請求項1~6のいずれか一項に記載の虚像表示装置。
- 前記保持手段は、前記コンバイナとの距離を変更自在な構成で前記ベース部に結合されていることを特徴とする請求項1~7のいずれか一項に記載の虚像表示装置。
- 前記携帯端末が前記表示面に表示する画像の態様を切り換える制御を行うための基となる、当該虚像表示装置の種別に関する情報を送信する送信手段を備え、
前記送信手段は、前記保持手段と前記携帯端末が所定距離以内に近づいた場合に、前記種別に関する情報を当該携帯端末に送信することを特徴とする請求項1~8のいずれか一項に記載の虚像表示装置。 - 前記ベース部に結合され、前記携帯端末が前記表示面に表示する画像を構成する光を前記コンバイナに向けて反射する反射手段を備え、
前記保持手段は、前記携帯端末の表示面を前記反射手段に向けて保持することを特徴とする請求項1~3のいずれか一項に記載の虚像表示装置。 - 前記保持手段は、携帯前記端末の表示面を前記ベース部と略平行に保持することを特徴とする請求項10に記載の虚像表示装置。
- 前記保持手段は、当該保持手段が保持する携帯端末の表示面を前記反射手段側、および前記観察者側に向けられるように回転自在に前記ベース部に結合されていることを特徴とする請求項10または11に記載の虚像表示装置。
- 前記反射手段は、前記保持手段の回転方向と同一方向に回転自在に前記ベース部に結合されており、
前記保持手段は、前記反射手段が回転可能な角度範囲のうちの所定の角度範囲内において当該反射手段の回転に連動して回転することを特徴とする請求項12に記載の虚像表示装置。 - 前記コンバイナは、前記観察者との距離を変更自在な構成で前記ベース部に結合されていることを特徴とする請求項1~13のいずれか一項に記載の虚像表示装置。
- 前記コンバイナには、前記観察者により前記虚像が視認される方向からの外光を遮る、または減衰させる遮光部材が設けられることを特徴とする請求項1~14のいずれか一項に記載の虚像表示装置。
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US20180231776A1 (en) | 2018-08-16 |
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