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US20160193922A1 - Display apparatus and display unit - Google Patents

Display apparatus and display unit Download PDF

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Publication number
US20160193922A1
US20160193922A1 US15/073,004 US201615073004A US2016193922A1 US 20160193922 A1 US20160193922 A1 US 20160193922A1 US 201615073004 A US201615073004 A US 201615073004A US 2016193922 A1 US2016193922 A1 US 2016193922A1
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United States
Prior art keywords
display
image
display device
region
mirror
Prior art date
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Abandoned
Application number
US15/073,004
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English (en)
Inventor
Satoshi Kuzuhara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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Filing date
Publication date
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Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. reassignment PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUZUHARA, Satoshi
Publication of US20160193922A1 publication Critical patent/US20160193922A1/en
Abandoned legal-status Critical Current

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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
    • G02B27/0101—Head-up displays characterised by optical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/10—Mirrors with curved faces
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/013—Head-up displays characterised by optical features comprising a combiner of particular shape, e.g. curvature
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0141—Head-up displays characterised by optical features characterised by the informative content of the display
    • 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
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0181—Adaptation to the pilot/driver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

Definitions

  • the present technology relates to a display apparatus that enables a virtual image of a display image to be visually perceived by projecting the display image to a light transmissive display member.
  • Unexamined Japanese Patent Publication No. 2013-25205 discloses a headup display including a curved screen that corrects a field curvature of a virtual image.
  • Unexamined Japanese Patent Publication No. 2013-111999 discloses a headup display that divides a display image into two screens and displays the display image.
  • a display apparatus includes a display unit that projects an image to a light transmissive display member, and the display apparatus forms a virtual image of the image projected by the display unit on an opposite side to a user side with respect to the display member.
  • the display unit includes a display device including a display region and a non-display region that is formed around the display region, a display controller that inputs an image signal to the display device in order to display a predetermined image in the display region, and a projection optical system that projects the image displayed on the display device to the display member.
  • the projection optical system includes a first reflecting member disposed on a display device side and a second reflecting member disposed on a display member side in an optical path extending from the display device to the display member.
  • the display controller is configured to be able to change a display position of the image in the display region by controlling the image signal input to the display device.
  • FIG. 1 is an explanatory view illustrating a configuration of an on-vehicle display apparatus provided with a display unit according to an exemplary embodiment of the present technology.
  • FIG. 2 is a perspective view illustrating a configuration of the display unit used in the on-vehicle display apparatus.
  • FIG. 3 is an explanatory view illustrating a schematic configuration of the display unit.
  • FIG. 4 is a plan view illustrating a display surface of a display device.
  • FIG. 5 is an explanatory view illustrating the case that a display position of an image displayed on the display device is changed.
  • FIG. 6 is an explanatory view illustrating a change of the image projected by a projection optical system by changing the display position of the image displayed on the display device.
  • FIG. 7 is an explanatory view illustrating a positional relationship among the display device of the display unit, first and second mirrors, a user, and the virtual image.
  • FIG. 8 is a plan view illustrating a positional relationship of the image displayed on the display device.
  • FIG. 9 is an explanatory view illustrating a relationship between an eye box that is a user's visually recognizable region and a user's recognizable virtual image in the exemplary embodiment.
  • FIG. 10 is an explanatory view illustrating a state when the virtual image is viewed from each of positions (1) to (5) of the eye box that is the visually recognizable region in the exemplary embodiment.
  • FIG. 11 is a perspective view illustrating a configuration of a display unit according to another exemplary embodiment used in the on-vehicle display apparatus.
  • FIG. 12 is a perspective view illustrating another example of the first mirror.
  • FIG. 13 is an explanatory view illustrating an example of a mirror in which a reflection surface is a free-form surface.
  • FIG. 1 is an explanatory view illustrating a configuration of an on-vehicle display apparatus provided with a display unit according to an exemplary embodiment of the present technology.
  • display unit 10 that projects an image is disposed in dashboard 21 of vehicle 20 .
  • Display unit 10 projects the image to wind shield 22 that is a light transmissive display member disposed in vehicle 20 , thereby forming virtual image 40 of the image projected by display unit 10 on an opposite side to a side of user 30 with respect to wind shield 22 .
  • User 30 can visually perceive virtual image 40 of the image projected by display unit 10 through wind shield 22 .
  • Center optical path L of the projected image is indicated by an alternate long and two short dashes line in FIG. 1 , and also in the following description, center optical path L is indicated by the alternate long and two short dashes line in the drawings.
  • FIG. 2 is a perspective view illustrating a configuration of the display unit used in the on-vehicle display apparatus.
  • FIG. 2 illustrates the display unit with a housing of the display unit partially cut.
  • FIG. 3 is an explanatory view illustrating a schematic configuration of the display unit.
  • display device 12 that displays the image and a projection optical system that projects the image displayed on display device 12 to wind shield 22 that is the display member are accommodated in housing 11 including opening 11 A. Therefore, user 30 can visually perceive virtual image 40 of the image through wind shield 22 of the display member. User 30 can visually perceive virtual image 40 of the image projected to wind shield 22 of the display member from eye box 31 that is a previously-assumed visually recognizable region.
  • Opening 11 A of housing 11 constitutes an outgoing port of projected light of the projection optical system.
  • a light transmissive cover such as a transparent resin sheet may be disposed so as to close opening 11 A.
  • a liquid crystal display apparatus for example, a liquid crystal display apparatus, an organic EL display apparatus, and a plasma display are used as display device 12 .
  • display device 12 a predetermined image is displayed in a display region of display device 12 using an image signal input from display controller 15 .
  • the projection optical system includes first mirror 13 and second mirror 14 in an optical path from display device 12 to wind shield 22 of the display member.
  • First mirror 13 is a first reflecting member disposed on the side of display device 12 .
  • Second mirror 14 is a second reflecting member disposed on the display member side, namely, on the side of opening 11 A through which the projected light for the image displayed on display device 12 is output.
  • opening 11 A through which the projected light is output includes first end 11 B that is formed in a rim on the side of first mirror 13 of opening 11 A and second end 11 C that is formed in a rim on the side of second mirror 14 of opening 11 A.
  • Display device 12 is disposed such that the display region where the image is displayed is located on the side of first mirror 13 with respect to straight line LS connecting first end 11 B and second end 11 C. Therefore, even if the light is incident on display unit 10 , the incidence of the light on the display region of display device 12 can be restrained to form high-quality virtual image 40 .
  • FIG. 4 is a plan view illustrating a display surface of the display device.
  • rectangular display device 12 includes rectangular display region 12 A where predetermined image 16 is displayed using the image signal input from display controller 15 and non-display region 12 B that is formed around display region 12 A.
  • Image 16 displayed on display device 12 becomes a vertically- and horizontally-reversed image with respect to virtual image 40 displayed by display unit 10 .
  • Marks (1), (2), (3), and (4) indicating positions of virtual image 40 in FIG. 3 and marks (1), (2), (3), and (4) indicating positions of image 16 in FIG. 4 show that image 16 displayed on display device 12 becomes the inverted image with respect to virtual image 40 formed by display unit 10 .
  • Display controller 15 controls the image signal input to display device 12 , which enables the display positions of image 16 to be changed in display region 12 A.
  • FIG. 5 is an explanatory view illustrating the case that the display position of the image displayed on the display device is changed.
  • FIG. 6 is an explanatory view illustrating a change of the image projected by the projection optical system by changing the display position of the image displayed on the display device.
  • display controller 15 controls the image signal, which enables the image displayed on display device 12 to be changed from display position 16 A to display position 16 B.
  • display positions 16 A and 16 B are not limited to the two places, but display controller 15 can set display positions 16 A and 16 B to arbitrary positions.
  • the position where the image is displayed on display device 12 can be changed by controlling display controller 15 , and user 30 can visually perceive proper virtual image 40 according to the position of the viewpoint of user 30 .
  • an attachment error of display unit 10 is generated when display unit 10 is installed on vehicle 20 .
  • display controller 15 when display controller 15 is controlled to adjust the display position of the image displayed on display device 12 , user 30 can visually perceive proper virtual image 40 . Therefore, the attachment error can be corrected in display unit 10 itself.
  • display controller 15 is controlled to adjust display positions 16 A and 16 B of image 16 displayed on display device 12 , which allows user 30 to visually perceive proper virtual image 40 .
  • the viewpoint of user 30 is located in a substantial center of eye box 31 that is the visually recognizable region in order that user 30 can visually perceive proper virtual image 40 . Accordingly, in the case that the position of the viewpoint of user 30 changes, display controller 15 controls the display positions 16 A and 16 B of image 16 displayed on display device 12 to be moved such that the viewpoint of user 30 is located in the substantial center of eye box 31 that is the visually recognizable region.
  • Vi/Is is greater than or equal to 2 and less than 7.
  • Vi is a movement amount of the user's viewpoint region and Is is a movement amount of image 16 displayed on display device 12 .
  • display controller 15 controls the movement amount of image 16 such that Vi/Is is greater than or equal to 4 and less than 6.
  • the experimental result showed that a distortion of the image observed in eye box 31 of user 30 increases when Vi/Is is greater than or equal to 7, and eye box 31 that is the visually recognizable region of user 30 is narrowed when Vi/Is is less than 2.
  • First mirror 13 that is the first reflecting member of the projection optical system is disposed above a display surface of display device 12 , namely, immediately above display region 12 A.
  • reflection surface 13 A that reflects the image displayed on display device 12 has a convex shape of a free-form surface.
  • Second mirror 14 that is the second reflecting member of the projection optical system is disposed immediately below wind shield 22 that is the display member on the optical path on which the image is reflected by reflection surface 13 A of first mirror 13 .
  • reflection surface 14 A that faces reflection surface 13 A of first mirror 13 and projects the image to wind shield 22 that is the display member has a concave shape of the free-form surface.
  • FIG. 7 is an explanatory view illustrating a positional relationship among the display device of the display unit, the first and second mirrors, the user, and the virtual image.
  • FIG. 8 is a plan view illustrating a positional relationship of the image displayed on the display device. Each symbol illustrated in FIGS. 7 and 8 is defined as follows. An interval between display device 12 and first mirror 13 and an interval between first mirror 13 and second mirror 14 mean a length of the center optical path.
  • D 12 Interval between first mirror 13 and second mirror 14 in center optical path
  • Lv Length (T ⁇ tan ⁇ ) in longitudinal direction of virtual image 40
  • T Distance from pupil of user 30 to virtual image 40 in center optical path
  • ⁇ Angle in a vertical direction when virtual image 40 is viewed from pupil of user 30
  • Yv Length (corresponding to length in perpendicular direction of virtual image) in longitudinal direction of image 16 displayed on display device 12
  • DL 1 Interval between first mirror 13 and image 16 of display device 12
  • first mirror 13 and second mirror 14 are disposed such that interval D 12 between first mirror 13 and second mirror 14 satisfies 0.2 ⁇ D 12 /Lv ⁇ 1.3. Desirably, first mirror 13 and second mirror 14 are disposed such that interval D 12 between first mirror 13 and second mirror 14 satisfies 0.5 ⁇ D 12 /Lv ⁇ 1.0. More desirably, first mirror 13 and second mirror 14 are disposed such that an upper limit of interval D 12 between first mirror 13 and second mirror 14 satisfies D 12 /Lv ⁇ 0.9.
  • user 30 can visually perceive sufficiently large virtual image 40 in small-size display unit 10 having the small interval between first mirror 13 and second mirror 14 .
  • An increase in curvature of second mirror 14 can be restrained, and a screen distortion of virtual image 40 can easily be corrected. That is, in the exemplary embodiment, downsizing of display unit 10 can be provided.
  • a relationship between length Yv in the longitudinal direction of image 16 displayed on display device 12 and distance T in the center optical path from user 30 to virtual image 40 satisfies 0.03 ⁇ (T ⁇ Lv)/Yv ⁇ 0.22.
  • the downsizing of display unit 10 can be provided, and the downsizing of the display apparatus provided with display unit 10 can be provided.
  • interval D 12 between first mirror 13 and second mirror 14 and interval DL 1 between first mirror 13 and image 16 of display device 12 satisfy 3.0 ⁇ D 12 /DL 1 .
  • interval D 12 between first mirror 13 and second mirror 14 and interval DL 1 between first mirror 13 and image 16 of display device 12 satisfy 3.5 ⁇ D 12 /DL 1 ⁇ 10.0.
  • interval D 12 between first mirror 13 and second mirror 14 and interval DL 1 between first mirror 13 and image 16 of display device 12 satisfy 5.0 ⁇ D 12 /DL 1 ⁇ 8.0.
  • interval D 12 between first mirror 13 and second mirror 14 and interval DL 1 between first mirror 13 and image 16 of display device 12 satisfy 3.0 ⁇ D 12 /DL 1 , the increase in curvature of second mirror 14 can be restrained, and the screen distortion of virtual image 40 can easily be corrected. That is, in the exemplary embodiment, downsizing of display unit 10 can be provided.
  • FIG. 9 is an explanatory view illustrating a relationship between the eye box that is the user's visually recognizable region and the user's recognizable virtual image in the exemplary embodiment.
  • virtual image 40 is viewed from lower left position (3) of eye box 31 .
  • FIG. 10 is an explanatory view illustrating a state when the virtual image is viewed from each of positions (1) to (5) of the eye box that is the visually recognizable region in the exemplary embodiment.
  • the visually recognizable region eye box means a region where the user can observe the whole virtual image without omission.
  • the visually recognizable region has a rectangular shape of 120 mm ⁇ 35 mm.
  • the screen distortion is corrected in the whole region of eye box 31 when virtual image 40 is viewed from positions (1) to (5) of eye box 31 . That is, user 30 can visually perceive good virtual image 40 in the whole region of eye box 31 .
  • FIG. 11 is a perspective view illustrating a configuration of a display unit according to another exemplary embodiment used in the on-vehicle display apparatus.
  • first light shielding section 11 D is provided at a rim on the side of first mirror 13 of opening 11 A through which the projected light passes
  • second light shielding section 11 E having a shape cut and raised from housing 11 is provided at a rim on the side of second mirror 14 of opening 11 A.
  • First light shielding section 11 D includes first end 11 B
  • second light shielding section 11 E includes second end 11 C.
  • Display device 12 is disposed such that the display region where the image is displayed is located on the side of first mirror 13 with respect to straight line LS connecting first end 11 B and second end 11 C.
  • display unit 10 includes first light shielding section 11 D and second light shielding section 11 E to enlarge an opening area of opening 11 A, so that a degree of freedom can be ensured in design.
  • the display unit includes display device 12 including display region 12 A and non-display region 12 B formed around display region 12 A, display controller 15 that inputs the image signal to display device 12 in order to display predetermined image 16 in display region 12 A, and the projection optical system that projects the image displayed on display device 12 to the display member.
  • the projection optical system includes first mirror 13 disposed on the side of display device 12 and second mirror 14 disposed on the display member side in the optical path from display device 12 to the display member.
  • Display controller 15 controls the image signal input to display device 12 , which enables the display positions of image 16 to be changed in display region 12 A.
  • the position where the image is displayed on display device 12 can be changed by controlling display controller 15 , and user 30 can visually perceive proper virtual image 40 according to the position of the viewpoint of user 30 .
  • the screen distortion generated in wind shield 22 that is the display member having the predetermined curvature can be corrected well. Therefore, the screen distortion is decreased in the virtual image of the image formed on the opposite side to the user side with respect to the display member, and the user can visually perceive the virtual image without sensing an uncomfortable feeling.
  • reflection surface 13 A of first mirror 13 has a rotationally asymmetric convex shape. Therefore, the screen distortion can be corrected well over the whole user's viewpoint region.
  • reflection surface 13 A of first mirror 13 has the convex shape in the horizontal direction. Therefore, the curvature in the horizontal direction of reflection surface 14 A of second mirror 14 can be increased and the display apparatus can be downsized.
  • reflection surface 13 A of first mirror 13 has the convex shape of the free-form surface.
  • reflection surface 13 A may be formed by a toroidal surface having a convex shape in the horizontal direction.
  • the toroidal surface means an aspherical shape in which the horizontal direction differs from the perpendicular direction orthogonal to the horizontal direction in the curvature.
  • Rotationally asymmetric reflection surface 13 A of first mirror 13 may have a shape in which the X-axis direction differs from the Y-axis direction in the curvature as illustrated in FIG. 12 .
  • FIG. 13 is an explanatory view illustrating an example of the mirror in which the reflection surface is the free-form surface. As illustrated in FIG. 13 , the reflection surface which is the free-form surface is defined as follows.
  • reflection surface F has reflecting regions ⁇ 1 , ⁇ 2 , ⁇ 3 , and ⁇ 4 having different curvatures with a point at which reference longitudinal curve F 1 intersects reference crosswise curve F 2 as a boundary.
  • the length in Tables has a unit (mm), and the angle has a unit (degree).
  • the free-form surface is defined by the following mathematical formula.
  • z is a sag amount at a position (x,y) from an axis defining the surface
  • r is a curvature radius at an origin of the axis defining the surface
  • c is a curvature at the origin of the axis defining the surface
  • k is a conic constant
  • Cj is a coefficient of a monomial x m y n .
  • a coordinate origin that is a reference is located in the center of the image (display surface) displayed on display device 12 .
  • the crosswise direction of the display surface is set to an X-axis
  • the longitudinal direction is set to a Y-axis
  • a direction perpendicular to the display surface is set to a Z-axis.
  • a surface number 1 indicates the display surface of display device 12
  • a surface number 2 indicates first mirror 13
  • a surface number 3 indicates the second mirror
  • a surface number 4 indicates wind shield 22
  • a surface number 5 indicates the user's viewpoint.
  • ADE means a rotation amount of the mirror from the Z-axis direction toward the Y-axis direction about the X-axis
  • BDE means a rotation amount of the mirror from the X-axis direction toward the Z-axis direction about the Y-axis
  • CDE means a rotation amount of the mirror from the X-axis direction toward the Y-axis direction about the Z-axis.
  • Table 20 illustrates examples of the display size of the image, the virtual image size, and the distance from the user's viewpoint to the virtual image in Examples 1 to 6.
  • Table 21 illustrates examples of numerical values derived from parameters of D 12 : the interval between first mirror 13 and second mirror 14 , Lv: the longitudinal length (T ⁇ tan ⁇ ) of virtual image 40 , T: the distance from the pupil of user 30 to virtual image 40 in FIG. 7 .
  • Example Example Example 1 2 3 4 5 6 Display X 97.6 97.6 100.0 100.0 40.0 14.4 size Y 36.6 36.6 50.0 50.0 20.5 38.4 Virtual X 420.0 420.0 540.0 540.0 252.0 300.0 image size Y 157.5 157.5 270.0 270.0 126.0 112.5 Distance 2100 2100 2700 2700 2100 2500 between pupil and virtual image
  • Example Example Example 1 2 3 4 5 6 D12/Lv 0.84 0.86 0.61 0.61 0.89 0.90 ⁇ (T ⁇ Lv)/Yv 0.10 0.10 0.05 0.05 0.16 0.20
  • the present technology is suitable for the display apparatus, such as the on-vehicle headup display, in which the high image quality is required.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Instrument Panels (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
US15/073,004 2013-12-27 2016-03-17 Display apparatus and display unit Abandoned US20160193922A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013271279 2013-12-27
JP2013-271279 2013-12-27
PCT/JP2014/006364 WO2015098076A1 (fr) 2013-12-27 2014-12-22 Équipement d'affichage et unité d'affichage

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Application Number Title Priority Date Filing Date
PCT/JP2014/006364 Continuation WO2015098076A1 (fr) 2013-12-27 2014-12-22 Équipement d'affichage et unité d'affichage

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US20160193922A1 true US20160193922A1 (en) 2016-07-07

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US15/073,004 Abandoned US20160193922A1 (en) 2013-12-27 2016-03-17 Display apparatus and display unit
US15/076,657 Abandoned US20160202480A1 (en) 2013-12-27 2016-03-22 Display apparatus and display unit
US15/079,683 Active US9599816B2 (en) 2013-12-27 2016-03-24 Display apparatus and display unit
US15/083,731 Ceased US10473927B2 (en) 2013-12-27 2016-03-29 Display apparatus and display unit
US17/474,486 Active USRE49561E1 (en) 2013-12-27 2021-09-14 Display apparatus and display unit

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US15/083,731 Ceased US10473927B2 (en) 2013-12-27 2016-03-29 Display apparatus and display unit
US17/474,486 Active USRE49561E1 (en) 2013-12-27 2021-09-14 Display apparatus and display unit

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EP3388884A1 (fr) 2018-10-17
EP3088934A1 (fr) 2016-11-02
JPWO2015098077A1 (ja) 2017-03-23
EP3035107A4 (fr) 2017-03-01
EP3088934A4 (fr) 2017-03-29
US10473927B2 (en) 2019-11-12
WO2015098077A1 (fr) 2015-07-02
EP3035106B1 (fr) 2018-06-06
WO2015098078A1 (fr) 2015-07-02
EP3035106A1 (fr) 2016-06-22
JPWO2015098076A1 (ja) 2017-03-23
EP3035105A1 (fr) 2016-06-22
EP3035107A1 (fr) 2016-06-22
WO2015098075A1 (fr) 2015-07-02
JP5957710B2 (ja) 2016-07-27
JP5957709B2 (ja) 2016-07-27
JP5957711B2 (ja) 2016-07-27
US9599816B2 (en) 2017-03-21
EP3035107B1 (fr) 2018-06-20
EP3035105B1 (fr) 2018-06-06
US20160209650A1 (en) 2016-07-21
EP3035105A4 (fr) 2017-01-25
JPWO2015098075A1 (ja) 2017-03-23
WO2015098076A1 (fr) 2015-07-02
USRE49561E1 (en) 2023-06-27
EP3388884B1 (fr) 2023-04-12

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