JP2018054839A - Display unit and display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit and a display system that take into consideration a change in position of a user' eye.SOLUTION: A display unit comprises: a light source device 20 that emits illumination light 2; a display panel 30 that receives the illumination light 2 and emits image light; a driving device 50 that tilts at least part of the light source device 20 to change the direction of the illumination light 2; a detection device 40 that detects the position of a user's eye 5; and a control device 60 that controls the direction of the illumination light 2 with the driving device 50 on the basis of the position of the user's eye 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device and a display system.

  Conventionally, a display device that allows a user to visually recognize a virtual image via a reflecting member is known (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2006-126314

  When the position of the user's eyes changes in a liquid crystal display or the like, there may be a change in luminance variation viewed from the user due to the directivity characteristics of light emitted from the light source.

  The present invention has been made in view of the above-described points, and an object thereof is to provide a display device and a display system in consideration of a change in the position of a user's eyes.

  A display device according to an embodiment of the present disclosure includes a light source device that emits illumination light. The display device includes a display panel that receives the illumination light and emits image light. The display device includes a drive device that tilts at least a part of the light source device and changes the direction of the illumination light. The display device includes a detection device that detects a position of a user's eyes. The display device includes a control device that controls the direction of the illumination light by the driving device based on the position of the eyes of the user.

  A display system according to an embodiment of the present disclosure includes a display device. The display device includes a light source device that emits illumination light. The display device includes a display panel that receives the illumination light and emits image light. The display device includes a drive device that tilts at least a part of the light source device and changes the direction of the illumination light. The display device includes a detection device that detects a position of a user's eyes. The display device includes a control device that controls the direction of the illumination light by the driving device based on the position of the eyes of the user. The display system includes a projection member that reflects the image light toward the eyes of the user.

  According to the display device and the display system according to an embodiment of the present disclosure, the luminance distribution can be controlled in accordance with a change in the position of the user's eyes.

It is a figure which shows the example of the display system which concerns on one Embodiment. It is a functional block diagram which shows the schematic structural example of the display apparatus which concerns on one Embodiment. It is a figure which shows the structural example of a light source device. It is a figure which shows the example of the light distribution characteristic of a light source device. It is a figure which shows the example of a reference | standard optical path. It is a figure which shows the example of the light distribution characteristic of a display panel. It is a figure which shows the positional relationship between a display surface and eyes. It is a figure which shows the example of the light distribution characteristic of a display panel. It is a figure which shows the positional relationship between a display surface and eyes. It is a figure which shows the example which inclines the whole light source device which concerns on one Embodiment. It is a figure which shows the example which inclines a board | substrate and a 1st lens. It is a figure which shows the example which inclines a 2nd lens.

[Device configuration]
As shown in FIG. 1, the display system 1 according to an example of the embodiment includes a display device 10, an optical member 34, and a projection member 35. The display device 10 emits image light. The display system 1 causes the image light to reach the eye box 70 along the reference optical path 3. When the eyes 5 of the user of the display system 1 are within the range of the eye box 70, the display system 1 can cause the user to visually recognize the image light as the virtual image 74. The eye box 70 is also referred to as a predetermined area.

  The reference optical path 3 is a path from the display device 10 to the eye box 70. The optical member 34 and the projection member 35 are located along the reference optical path 3. The image light emitted from the display device 10 reaches the projection target member 35 via the optical member 34. The image light is reflected by the projection surface 36 of the projection member 35 and reaches the eye box 70. When the user's eyes 5 are within the range of the eye box 70, the user can visually recognize the image light reflected by the projection surface 36 as a virtual image 74.

  The optical member 34 may include a reflecting member including a convex surface or a concave mirror. The optical member 34 may include a refractive member including a convex lens or a concave lens. The convex lens includes a biconvex lens, a plano-convex lens, and a convex meniscus lens. The concave lens includes a biconcave lens, a plano-concave lens, and a concave meniscus lens. Projected member 35 includes, for example, a vehicle front windshield and a combiner. The projection member 35 may be a mirror or a half mirror. The projection member 35 is not limited to these, and may be a member including other optical elements.

  As shown in FIGS. 1 and 2, the display device 10 includes a light source device 20, a display panel 30, a detection device 40, a drive device 50, and a control device 60. The control device 60 is electrically connected to the light source device 20, the display panel 30, the detection device 40, and the drive device 50. The driving device 50 is electrically connected to the light source device 20.

  As shown in FIG. 3, the light source device 20 includes a substrate 21, a light emitting element 22, a first lens 23, and a second lens 24. The light emitting element 22 is located on the substrate 21. The light emitting element 22 may be configured as a point light source. The light emitting element 22 may be configured to be regarded as a surface light source. A plurality of light emitting elements 22 may be arranged on the substrate 21. A plurality of light emitting elements 22 may be arranged in a matrix on the substrate 21. The plurality of light emitting elements 22 may be configured to be regarded as a surface light source as a whole while being positioned on the substrate 21. The light emitting element 22 may be a lamp, an LED (Light Emission Diode), a laser, or the like. The light emitting element 22 emits illumination light 2. The illumination light 2 may be white light. The illumination light 2 may include light having a plurality of wavelengths. The illumination light 2 is not limited to visible light, and may include at least one of infrared light and ultraviolet light. The first lens 23 and the second lens 24 are also simply referred to as lenses.

  The illumination light 2 passes through the first lens 23 and the second lens 24 and enters the display panel 30. The first lens 23 may be a collimating lens, for example. When the first lens 23 is a collimating lens, the first lens 23 brings the illumination light 2 close to a parallel light beam. The second lens 24 may be a Fresnel lens, for example. When the second lens 24 is a Fresnel lens, it collects the illumination light 2. When the focal length of the second lens 24 is long, the illumination light 2 can be maintained in a state close to parallel rays. Each of the first lens 23 and the second lens 24 may be another type of lens.

  The light source device 20 may further include a diffusion plate or a light guide plate. The diffuser plate or the light guide plate can reduce variations in spatial intensity of the illumination light 2 by allowing the illumination light 2 to pass therethrough.

  The light source device 20 emits the illumination light 2 with an intensity corresponding to the emission direction of the illumination light 2. The intensity distribution of the illumination light 2 according to the emission direction of the illumination light 2 is also referred to as the light distribution characteristic of the light source device 20. The light distribution characteristic can be represented by a graph in which the relationship between the intensity of the illumination light 2 and the emission direction is plotted. The emission direction of the illumination light 2 can be various directions in the three-dimensional space.

  The light distribution characteristic can be represented by, for example, a three-dimensional polar coordinate system. The three-dimensional polar coordinate system has a radius and two angles as parameters. When the light distribution characteristic expressed in the three-dimensional polar coordinate system is axisymmetric with respect to a predetermined axis, the light distribution characteristic can be expressed in the two-dimensional polar coordinate system. The two-dimensional polar coordinate system has a radius and one angle as parameters. In the light distribution characteristics shown in the graph plotted in the polar coordinate system, the radius and angle of the polar coordinate system indicate the intensity and the emission direction of the illumination light 2, respectively. Hereinafter, the light distribution characteristic of the light source device 20 according to the present embodiment is represented by a two-dimensional polar coordinate system. The light distribution characteristic of the light source device 20 may be represented by a three-dimensional polar coordinate system.

  The light source device 20 may be a surface light source or may be regarded as a surface light source. In the present embodiment, even if the light source device 20 is a surface light source, the light source device 20 may be handled as emitting the illumination light 2 from a predetermined point. In this case, the intensity of light emitted from a predetermined point toward a predetermined direction is a value obtained by integrating the intensity of light emitted from an arbitrary point on the surface light source toward the predetermined direction over the entire surface light source. Good. In other words, the intensity distribution of the illumination light 2 according to the emission direction of the illumination light 2 emitted from the surface light source may be a set of the intensity of the light emitted from the surface light source calculated in various directions.

  When the light source device 20 is handled as emitting the illumination light 2 from a predetermined point, the light distribution characteristic of the light source device 20 is, for example, a characteristic shown in the two-dimensional polar coordinate system of FIG. The origin O of the polar coordinate system corresponds to the point where the light source device 20 emits the illumination light 2. A semicircle indicated by a broken line around the origin O is an isointensity line indicating that the intensity of the illumination light 2 is constant. An isointensity line that is far from the origin O indicates that the intensity of the illumination light 2 is high. The solid line is a graph showing the relationship between the intensity of the illumination light 2 and the emission direction. In the present embodiment, the direction in which the intensity of the illumination light 2 is the highest indicated by the one-dot chain line arrow may be the illumination optical axis 25 of the light source device 20. It is assumed that the light distribution characteristic of the light source device 20 is axially symmetric with respect to the illumination optical axis 25.

  In one embodiment, the illumination optical axis 25 is in the direction in which the intensity of the illumination light 2 is highest, but is not limited thereto. The illumination optical axis 25 may be an axis of symmetry of the light distribution characteristic when the light distribution characteristic is axially symmetric. When there are a plurality of directions in which the intensity of the illumination light 2 is highest, the illumination optical axis 25 may be an axis along a vector obtained by averaging vectors indicating the respective directions. The illumination optical axis 25 may be an axis along a vector obtained by weighting and averaging a vector indicating the emission direction by the intensity of light emitted in each direction.

  The display panel 30 forms image light from the incident illumination light 2. The display panel 30 may be a liquid crystal panel, for example. As shown in FIG. 5, the display panel 30 has a display surface 31. The display panel 30 may form image light on the display surface 31 by changing the spatial intensity distribution of the illumination light 2. The display panel 30 may form image light on the display surface 31 by temporally changing the intensity of the illumination light 2. The display panel 30 may form image light on the display surface 31 by changing a spatial intensity distribution of light having a predetermined frequency included in the illumination light 2.

  As described above, the reference optical path 3 is a path connecting the display device 10 and the eye box 70. In the present embodiment, the reference optical path 3 may be a path connecting the first predetermined point 32 and the second predetermined point 72 as shown in FIG. The first predetermined point 32 may be a point on the display surface 31 of the display panel 30. The first predetermined point 32 may be a central point on the display surface 31. The first predetermined point 32 is not limited to this, and may be another point determined as appropriate. The second predetermined point 72 may be a point in the eye box 70. The second predetermined point 72 may be a central point of the eye box 70. The second predetermined point 72 is not limited to this, and may be another point determined as appropriate.

  The reference optical path 3 in FIG. 5 connects the first predetermined point 32 and the second predetermined point 72 in a straight line. The optical member 34 or the projection target member 35 may be located in the reference optical path 3. The reference optical path 3 can be a bent path according to the reflection or refraction of light by the optical member 34 or the projection target member 35. In the present embodiment, the reference optical path 3 is treated as a straight line.

  The display panel 30 receives the illumination light 2 over the entire display surface 31 from the light source device 20 side, and emits image light from the entire display surface 31 toward the eye box 70 side. In the present embodiment, the display panel 30 receives the illumination light 2 at the first predetermined point 32 and emits image light from the first predetermined point 32. The display panel 30 may receive the illumination light 2 at a point other than the first predetermined point 32 and emit image light.

  The image light has an intensity distribution according to the emission direction due to the light distribution characteristics of the illumination light 2. In other words, the display panel 30 has a light distribution characteristic. In the present embodiment, it is assumed that the light distribution characteristic of the display panel 30 is the same as the light distribution characteristic of the light source device 20. The image optical axis 33 of the display panel 30 may be determined corresponding to the illumination optical axis 25 of the light source device 20. The direction of the image optical axis 33 may be the same as the direction of the illumination optical axis 25 in the display panel 30 or may be different. The direction of the illumination optical axis 25 on the display surface 31 is also referred to as an incident direction in which the illumination light 2 enters the display panel 30. When the orientation of the image optical axis 33 is different from the orientation of the illumination optical axis 25, the relationship between the orientation of the image optical axis 33 and the orientation of the illumination optical axis 25 may be determined by the characteristics of the display panel 30. Hereinafter, the direction of the image optical axis 33 is assumed to be the same as the direction of the illumination optical axis 25.

  In one embodiment, the reference optical path 3 extends in the normal direction of the display surface 31 of the display panel 30. The direction of the reference optical path 3 is not limited to this. The reference optical path 3 may extend in a direction having a predetermined angle that is not 0 degrees with respect to the normal direction of the display surface 31 of the display panel 30.

  As shown in FIG. 5, when the direction of the illumination optical axis 25 is along the reference optical path 3, the direction of the image optical axis 33 is also along the reference optical path 3. Of the image light emitted from the first predetermined point 32, the component traveling in the direction of the image optical axis 33 travels along the reference optical path 3 and reaches the second predetermined point 72. When the user's eyes 5 are located at the second predetermined point 72, the user visually recognizes a component that proceeds in the direction of the image optical axis 33.

  Of the image light emitted from the first predetermined point 32, a component traveling in a direction having a predetermined angle that is not 0 degrees with respect to the image optical axis 33 proceeds in a direction having a predetermined angle with respect to the reference optical path 3. A point other than the second predetermined point 72 of the eye box 70 is reached. When the user's eye 5 is located at a point other than the second predetermined point 72, the user visually recognizes a component that proceeds in a direction having a predetermined angle with respect to the image optical axis 33.

  The detection device 40 detects the position of the user's eyes 5. The detection device 40 may include a camera, for example. The detection device 40 may photograph the user's face with a camera. The detection device 40 may detect the position of the user's eyes 5 from the captured image of the camera. The detection device 40 may detect the position of the user's eye 5 as a coordinate in a three-dimensional space from a photographed image of one camera. The detection device 40 may detect the position of the user's eyes 5 as coordinates in a three-dimensional space from images captured by two or more cameras.

  The detection device 40 does not include a camera and may be connected to a camera outside the device. The detection device 40 may include an input terminal for inputting a signal from a camera outside the device. The camera outside the apparatus may be directly connected to the input terminal. The camera outside the apparatus may be indirectly connected to the input terminal via a shared network. The detection device 40 that does not include a camera may detect the position of the user's eye 5 from the signal input to the input terminal.

  The detection device 40 may include a sensor, for example. The sensor may be an ultrasonic sensor or an optical sensor. The detection device 40 may detect the position of the user's head using a sensor and detect the position of the user's eyes 5 based on the position of the head. The detection device 40 may detect the position of the user's eyes 5 as coordinates in a three-dimensional space by one or more sensors.

  The display device 10 may not include the detection device 40. When the display device 10 does not include the detection device 40, the display device 10 may include an input terminal that inputs a signal from a detection device outside the device. The detection device outside the device may be connected to the input terminal. The detection device outside the device may use an electric signal and an optical signal as a transmission signal for the input terminal. The detection device outside the device may be indirectly connected to the input terminal via a shared network.

  The driving device 50 drives the light source device 20 spatially. The driving device 50 may spatially drive the light source device 20 by a motor or a piezoelectric element. The direction of the illumination optical axis 25 is changed by spatially driving the light source device 20. The emission direction of the illumination light 2 is changed according to the change of the direction of the illumination optical axis 25.

  The drive device 50 may tilt the light source device 20 at a predetermined angle. The driving device 50 may tilt the light source device 20 so that the angle between the illumination optical axis 25 and the reference optical path 3 changes. The drive device 50 may drive the light source device 20 in a direction along the illumination optical axis 25. The driving device 50 may drive the light source device 20 in a direction that intersects the illumination optical axis 25.

  The driving device 50 may drive the entire light source device 20 spatially. The drive device 50 may drive each part of the light source device 20 separately and spatially. The driving device 50 may spatially drive at least one of the substrate 21 including the light emitting element 22, the first lens 23, and the second lens 24.

  As shown in FIG. 2, the control device 60 is connected to each component of the display device 10. The control device 60 may output control information for setting the intensity of the illumination light 2 to the light source device 20. The control device 60 may output control information related to the intensity distribution when the image light is generated from the illumination light 2 to the display panel 30. The control device 60 may acquire control information related to the position of the user's eyes 5 from the detection device 40. The control device 60 may obtain a photographed image by the camera from the detection device 40 and calculate the position of the user's eyes 5. The control device 60 may obtain detection information of the user's head by the sensor from the detection device 40 and calculate the position of the user's eyes 5. The control device 60 may output control information related to spatial driving of the light source device 20 to the driving device 50. The control device 60 may include a detection device 40 that does not include a camera. The control device 60 may realize the detection device 40 that does not include a camera as one function.

  The control device 60 includes one or more processors. The processor may include a general-purpose processor that reads a specific program and executes a specific function, and a dedicated processor specialized for a specific process. The dedicated processor may include an application specific integrated circuit (ASIC). The processor may include a programmable logic device (PLD). The PLD may include an FPGA (Field-Programmable Gate Array). The control device 60 may be either a system-on-a-chip (SoC) in which one or more processors cooperate and a system in a package (SiP). The control device 60 may include a storage device that stores various information or a program for operating each component of the display device 10. The storage device may be composed of, for example, a semiconductor memory. The storage device may function as a work memory for the control device 60.

[Intensity distribution of image light]
As described above, the display panel 30 has light distribution characteristics. The light distribution characteristic of the display panel 30 is as shown in FIG. 6, for example. In FIG. 6, the origin O is a point corresponding to the first predetermined point 32. The origin O is not limited to the first predetermined point 32. The origin O may be a point other than the first predetermined point 32 located on the display surface 31. The light distribution characteristic of the display panel 30 shown in FIG. 6 is shown as a graph plotted in a two-dimensional polar coordinate system, similar to the light distribution characteristic of the light source device 20 shown in FIG.

  In FIG. 6, the direction of the image optical axis 33 coincides with the direction of the reference optical path 3. The range of angles indicated by θ is a range in which image light having an intensity equal to or higher than a predetermined ratio with respect to the intensity of image light in the direction of the image optical axis 33 is emitted. In other words, the difference between the intensity of the image light emitted in a direction within an angle range of θ or less with respect to the direction of the image optical axis 33 and the intensity of the image light emitted in the direction of the image optical axis 33 is It is below a predetermined value. The predetermined value may be set based on whether the user is likely to sense the presence of the intensity distribution.

  Depending on the direction in which the user views the display panel 30, the intensity distribution of the image light sensed by the user is different. As shown in FIG. 7A, when the user's eyes 5 are in a position where the display panel 30 is viewed from the front, each point on the display surface 31 has a viewing angle viewed from the user's eyes 5 of θ or less. It exists in the range which becomes the angle. When the direction of the image optical axis 33 is the same direction as the reference optical path 3, image light from a direction having an angle of θ or less with respect to the image optical axis 33 reaches the user's eye 5. The image light in this case appears to the user as having a difference in intensity that is less than or equal to a predetermined value. The user is less likely to sense the intensity distribution of the image light from the display panel 30.

  As shown in FIG. 7B, when the user's eyes 5 are at a position where the display panel 30 is viewed obliquely, a part of the display surface 31 has a viewing angle viewed from the user's eyes 5. It exists in a range where the angle (θ1) is larger than θ. The reference optical path 3 is assumed to extend in the normal direction of the display surface 31. When the direction of the image optical axis 33 is the same direction as the reference optical path 3, image light from a direction having an angle larger than θ with respect to the image optical axis 33 also reaches the user's eyes 5. The image light in this case appears to the user such that the difference in intensity is larger than a predetermined value. The user can easily sense the intensity distribution of the image light from the display panel 30.

  The positional relationship between the user's eye 5 and the display panel 30 shown in FIGS. 7A and 7B is associated with which range of the eye box 70 the user's eye 5 is located. It is done. In FIG. 7A, the user's eye 5 is located at a point on the reference optical path 3. The positional relationship shown in FIG. 7A is associated with the case where the user's eye 5 is located at the second predetermined point 72. In FIG. 7B, the user's eye 5 is located at a point deviating from the reference optical path 3. The positional relationship shown in FIG. 7B is associated with the case where the user's eye 5 is located at a point away from the second predetermined point 72 in the eye box 70.

  When the image light is reflected by the projection member 35 and travels toward the user's eyes 5, the user visually recognizes the image light as a virtual image 74. The luminance distribution of the virtual image 74 corresponds to the intensity distribution of the image light. When the user's eyes 5 are not on the reference optical path 3 as shown in FIG. 7B, the user can easily perceive the luminance distribution of the virtual image 74.

  The control device 60 of the display device 10 can control the angle of the illumination optical axis 25 by tilting the light source device 20 by the driving device 50. In other words, the control device 60 can control the angle of the image optical axis 33. For example, as shown in FIG. 8, the image optical axis 33 can be controlled such that the angle between the reference optical path 3 and the image optical axis 33 is θ. The range in which the difference from the intensity of the image light emitted in the direction of the image optical axis 33 is equal to or less than a predetermined value moves by an angle (θ) clockwise compared to FIG.

  When the orientation of the image optical axis 33 is tilted clockwise by an angle (θ), the orientation of the image optical axis 33 has an angle (θ) with respect to the reference optical path 3 as shown in FIG. In FIG. 9, as in FIG. 7B, the user's eyes 5 are located at a point away from the second predetermined point 72. In FIG. 9, unlike FIG. 7B, the image optical axis 33 is inclined, so that each point on the display surface 31 is in a range where the viewing angle viewed from the user's eyes 5 is an angle of θ or less. Can exist. In this case, it is difficult for the user to sense the luminance distribution of the virtual image 74.

  The control device 60 may acquire control information related to the position of the user's eyes 5 from the detection device 40. The control device 60 may calculate the position of the user's eyes 5 based on the control information acquired from the detection device 40. The control device 60 tilts the light source device 20 by the driving device 50 based on the position of the user's eyes 5. The control device 60 controls the angle of the illumination optical axis 25 with respect to the reference optical path 3 by tilting the light source device 20. In other words, the control device 60 controls the angle of the image optical axis 33. In this way, even when the user's eye 5 moves to a position far from the second predetermined point 72 of the eye box 70, it becomes difficult for the user to perceive the luminance distribution of the virtual image 74. Compared to the case where the light source device 20 does not tilt, the range of the eye box 70 can be expanded.

  As illustrated in FIG. 10, the driving device 50 may tilt the entire light source device 20 by an angle (θ). In this case, the directions of the illumination optical axis 25 and the image optical axis 33 are directions having an angle (θ) with respect to the reference optical path 3. The intensity distribution of the image light or the luminance distribution of the virtual image 74 is less likely to be detected from the user's eye 5 located at a point other than the second predetermined point 72 of the eye box 70.

  As illustrated in FIG. 11, the driving device 50 may tilt the substrate 21 including the light emitting element 22 and the first lens 23 by an angle (θ) without tilting the second lens 24. In this case as well, the directions of the illumination optical axis 25 and the image optical axis 33 are directions having an angle (θ) with respect to the reference optical path 3. The intensity distribution of the image light or the luminance distribution of the virtual image 74 is less likely to be detected from the user's eye 5 located at a point other than the second predetermined point 72 of the eye box 70.

  11 and 12, the angle of the image optical axis 33 emitted from the display surface 31 with respect to the reference optical path 3 is equal to the tilt angle of the light source device 20. On the other hand, the angle of the image optical axis 33 with respect to the reference optical path 3 at the position of the user's eye 5 may differ from the tilt angle of the light source device 20 due to refraction at the optical member 34 or the projection member 35.

  As illustrated in FIG. 12, the driving device 50 may tilt the second lens 24 by an angle (θ) without tilting the substrate 21 including the light emitting element 22 and the first lens 23. In this case, the second lens 24 is an optical element that can change the traveling direction of the illumination light 2. The directions of the illumination optical axis 25 and the image optical axis 33 are directions having an angle (θ) with respect to the reference optical path 3. The intensity distribution of the image light or the luminance distribution of the virtual image 74 is less likely to be detected from the user's eye 5 located at a point other than the second predetermined point 72 of the eye box 70.

  As illustrated in FIGS. 11 and 12, the display device 10 according to the present embodiment may include a plurality of lenses and tilt at least one of the plurality of lenses.

  When the user visually recognizes the display panel 30, the display device 10 according to the present embodiment detects the user's eyes 5 and directs the illumination optical axis 25 in the direction of the user's eyes 5. By doing in this way, even when the user visually recognizes the display panel 30 from an oblique direction, the intensity distribution of the image light is hardly perceived as in the case where the user visually recognizes the display panel 30 from the front. Even when the user visually recognizes the image light from the display panel 30 as a real image, the intensity distribution of the image light is not easily detected. Even when the user visually recognizes the image light from the display panel 30 as the virtual image 74, the intensity distribution of the image light is not easily detected.

  The drawings used in the description relating to the display system 1 and the display device 10 according to the present embodiment are schematic. The dimensional ratios and the like on the drawings do not necessarily match the actual ones.

  The display device 10 according to the present embodiment can also be applied when the user directly views the display panel 30. According to the display device 10 according to the present embodiment, even when the display panel 30 is viewed from an oblique direction, the intensity distribution of the image light is less likely to be detected as in the case where the user views the display panel 30 from the front.

  The display system 1 may be constructed on a moving body. The display system 1 may share part of the calibration with other devices and parts included in the moving body. For example, the moving body may also use the windshield as a part of the display system 1. The display system 1 and the display device 10 may be mounted on a moving body. The “mobile body” in the present disclosure includes a vehicle, a ship, and an aircraft. “Vehicle” in the present disclosure includes, but is not limited to, automobiles and industrial vehicles, and may include railway vehicles, domestic vehicles, and fixed-wing aircraft that run on the runway. The automobile includes, but is not limited to, a passenger car, a truck, a bus, a two-wheeled vehicle, a trolley bus, and the like, and may include another vehicle that travels on a road. Industrial vehicles include industrial vehicles for agriculture and construction. Industrial vehicles include but are not limited to forklifts and golf carts. Industrial vehicles for agriculture include, but are not limited to, tractors, tillers, transplanters, binders, combines, and lawn mowers. Industrial vehicles for construction include, but are not limited to, bulldozers, scrapers, excavators, crane trucks, dump trucks, and road rollers. Vehicles include those that travel by human power. The vehicle classification is not limited to the above. For example, an automobile may include an industrial vehicle capable of traveling on a road, and the same vehicle may be included in a plurality of classifications. Ships in the present disclosure include marine jets, boats, and tankers. The aircraft in the present disclosure includes fixed wing aircraft and rotary wing aircraft.

  The display system 1 and the display device 10 according to the present embodiment can be mounted not only on a moving body but also on various devices.

  In the present disclosure, descriptions such as “first” and “second” are identifiers for distinguishing the configuration. The members distinguished in the description of “first” and “second” in the present disclosure can exchange numbers in the configuration. For example, the first lens can exchange the identifiers “first” and “second” with the second lens. The identifiers are exchanged at the same time, and the configuration is distinguished even after the identifiers are exchanged. The identifier may be deleted. The configuration from which the identifier is deleted is distinguished by a code. Based on only the description of the identifiers “first” and “second” in the present disclosure, it should not be used as an interpretation of the order of the configuration, or as the basis for the existence of an identifier with a small number.

DESCRIPTION OF SYMBOLS 1 Display system 2 Illumination light 3 Reference | standard optical path 5 User's eyes 10 Display apparatus 20 Light source apparatus 21 Board | substrate 22 Light emitting element 23 1st lens 24 2nd lens 25 Illumination optical axis 30 Display panel 31 Display surface 32 1st predetermined point 33 Image Optical axis 34 Optical member 35 Projected member 36 Projected surface 40 Detection device 50 Drive device 60 Control device 70 Eye box 72 Second predetermined point 74 Virtual image

Claims (5)

A light source device for emitting illumination light;
A display panel that receives the illumination light and emits image light;
A drive device that tilts at least a part of the light source device and changes the direction of the illumination light;
A detection device for detecting the position of the user's eyes;
And a control device that controls the direction of the illumination light by the driving device based on the position of the eyes of the user. The light source device includes a light emitting element and a lens,
The display device according to claim 1, wherein the driving device tilts at least one of the light emitting element and the lens. The lens includes a plurality of lenses,
The display device according to claim 2, wherein the driving device tilts at least one of the plurality of lenses. An optical member;
The display panel is
A display surface including a first predetermined point;
The image light is emitted from the display surface via the optical member toward a predetermined region including a second predetermined point,
The drive device changes the incident direction of the illumination light to the display panel to a direction having a predetermined angle with respect to a reference optical path connecting the first predetermined point to the second predetermined point,
The display device according to claim 1, wherein the control device controls the predetermined angle based on a position of the user's eyes and the second predetermined point. A light source device for emitting illumination light;
A display panel that receives the illumination light and emits image light;
A drive device that tilts at least a part of the light source device and changes the direction of the illumination light;
A detection device for detecting the position of the user's eyes;
A display device having a control device for controlling the direction of the illumination light by the driving device based on the position of the eyes of the user;
A display system comprising: a projection member that reflects the image light toward the eyes of the user.

Images