TWI449950B - Header display device - Google Patents

Description

Head up display device

The present invention relates to an optical system architecture, and more particularly to a head-up display device suitable for use in a mobile carrier.

It is well known that the past Head Up Display (HUD) is a flight aid used on aircraft, which allows the driver to see the information on the meter without looking down, to avoid interruption of attention and loss. Mastery of Situation Awareness, because of the convenience of using a head-up imaging device and improved flight safety, it can also be used on other types of mobile vehicles, not only for civil aircraft, but also for automobiles and Ships can also be used.

In the past, the head-up display function in the prior art only provides simple meter data information with a small display area within the driver's line of sight to show any key to the mobile-loaded vehicle. Information, and in the head-up display of the conventional technology, most of the single-channel optical imaging device is used to provide a small display area, which is to first project key information to the optical machine, and the display screen is placed on the inner side of the windshield, and Facing the windshield, the key information is transmitted to the display screen via the optical machine, and the key information displayed by the display screen is directly displayed on the windshield through the reflection of the windshield, and the display position is usually directly In the line of sight in front of the driver, the driver can directly see the speed of the vehicle or other desired value while driving, without having to look up or down to change the line of sight. However, such a single optical path imaging device can be known according to optical imaging principles, regardless of Is the use of any lens or mirror, input image, imaging area and lens, mirror optical component size Small is proportional to the relationship. As a result, the head-up imaging device requires a large lens or a mirror to project the virtual image, so it is not easy to integrate the single optical path imaging device with the instrument panel. Because the required volume of the head-up imaging device is too large for the instrument panel that has been filled with wires and connectors, not to mention the optical component size of the head-up imaging device should not be reduced based on the projection quality, so in space It is very difficult to implement a large imaging area in a limited cockpit. Moreover, the display information with a small display area can only allow the driver to use the light to briefly look at the instrument console, so the driver cannot immediately It can filter out important key information. If the driver is too careful to pay attention to the key information of the head-up imaging device, it is easy to distract and make the driver feel dangerous.

In view of the above, the present invention is directed to the above problems, and provides a head-up display device which can have the size of an optical component for reducing a lens or a mirror, and has a large-area imaging range, which is a combination of safety and efficiency. Functional high-order head-up display unit.

The main object of the present invention is to provide a head-up display device which utilizes a rotating mechanism to perform partial cutting of image signals for individual projection, and supplemented by technical means of re-collecting the images. The present invention can utilize the same lens or mirror optics. The size of the component can be used to create a larger imaging area, or the size of the optical component of the lens or mirror can be reduced, thereby reducing the volume of the head-up display device, and achieving a large-area development effect in a limited in-vehicle installation space. The information screen provided by the head-up display device can be completely overlapped with the external scene or the corresponding image of the information screen can be displayed together, which can help the driver pay attention to the key information of the required mobile vehicle, and effectively solve the past single optical path developing device. A problem that can only be displayed in a small area.

Another object of the present invention is to provide a head-up display device which respectively projects and collects images by a rotating mechanism, and can adjust the appropriate display angle at any time with the height and posture of the driving through the adjustability of the see-through plane mirror. Compared with the single optical path developing device used in the past, the present invention can provide the driver with a full attention to the road condition and driving comfort in front.

In order to achieve the above object, the present invention provides a head-up display device comprising: at least a developing unit capable of generating one or more input images, at least one virtual image generating component for receiving an input image and generating at least one virtual image; and a rotating mechanism Controlling the rotation angle of the virtual image generating component, causing the virtual image generating component to change the virtual image projection angle; and the complex perspective planar mirror to respectively receive the virtual image and reflect into a large area virtual image.

The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.

The present invention is to provide a head-up display device which can cut an image by using a rotating mechanism and a virtual image generating element, or can perform image projection by a plurality of developing units, and supplement the image to re-collect the image by using the technology of the present invention. The content can directly reduce the size of the optical component of the lens or the mirror, and has a large area of imaging range. The present invention provides the adjustability of the see-through plane mirror, and can adjust the most appropriate display angle according to the height and sitting posture of the driving.

For the first embodiment of the present invention, reference is made to FIG. 1 to illustrate a block diagram of the device architecture of the present invention. As shown, the head-up display device 10 of the present invention can be coupled with at least one such as a charge-coupled component or a complementary metal-oxidation- The imaging unit 12 of the semiconductor component and the processing unit 14 of at least one such as a central processing unit, a microprocessor or a single-chip microcomputer, and using a liquid crystal display or a digital light processing projector as the developing unit 16, when the processing unit 14 is powered When the camera unit 12 and the developing unit 16 are connected, the camera unit 12 can use a single or multiple to capture a front view such as a lane line, a horizontal line or an obstacle profile or a single or multiple camera units 12 can be reused. The external signal is placed around the vehicle to capture the dead space of the vehicle. The processing unit 14 integrates the key information required for the mobile vehicle, such as receiving the external signal of the camera unit 12, and simultaneously receiving and processing the vehicle. Operating temperature, speed, speed, guidance information, tire pressure, shifting tips, steering, reversing tips, obstacle warnings, flight altitude, flight speed, flight Direction, vertical rate change, vehicle tilt angle, wind direction information, vehicle travel or idle vehicle signal, or reusable obstacle contour detection as obstacle distance warning signal, processing unit 14 in the assembly mobile vehicle After the key information is processed, it is processed into an image signal. Finally, the processing unit 14 transmits the image signal to the developing unit 16, and the developing unit 16 generates at least one input image to be projected to the optical mechanism 18.

For the first embodiment of the present invention, reference may be made to FIGS. 2, 3A, and 3B, and reference is made to FIG. 1 to explain the first embodiment of the optical mechanism, the structure diagram of the virtual image generating element, and the virtual image. The present invention discloses an embodiment of utilizing a plurality of micromirrors on a digital micromirror device as a virtual image generating component. As shown, the head display device 10 disclosed by the present invention is at least The imaging unit 16 can generate one or more input images and an optical mechanism 18 that can receive an input image and generate a virtual image. As shown in FIG. 2, FIG. 3A and FIG. 3B, the optical mechanism 18 includes at least: The virtual image generating component 22 can receive the input image generated by the developing unit 16 and generate at least one virtual image, and the plurality of see-through mirrors 28 respectively receive the virtual image and reflect it into a large-area virtual image, wherein the virtual image generating component 22 in the first embodiment As shown in FIG. 3A, a plurality of virtual image generating elements 22 may be arranged in a matrix array to form a digital micromirror element 24, and the virtual image generating element 22 may be used. The rotating mechanism 26 controls the angle of rotation of the virtual image generating element 22 to change the virtual image projection angle. Since each input image system has a plurality of pixels, each virtual image generating element 22 corresponds to at least one pixel, and is designed in the present invention. The technical means is that the number of yaw states of the see-through plane mirror 28 and the rotating mechanism 26 are equal, that is, in the second figure, the invention is exemplified by the rotation mechanism 26 with the left and right two segments as a yaw state, so that two perspectives are used. The plane mirror 28 is a corresponding embodiment. When the rotation mechanism 26 is assumed to be in the yaw state in the left, middle, and right sections, the three perspective plane mirrors 28 are used as the corresponding embodiments, so that the rotation mechanism 26 is set to have various deviations. In the pendulum state, it is only necessary to correspond to the number of the perspective plane mirrors 28, and the implementation principle is the same and clear, so the details are not repeated, and the detailed implementation of the rotation mechanism 26 is shown in FIG. 3B, wherein the rotation mechanism 26 is shown in FIG. Further included may be the actuator set 30 and the power unit 32, the actuator set 30 may be comprised of a gear 34, a rack 36, or a combination thereof, and the power unit 32 A micromotor can be used such that power unit 32 can generate power to drive actuator group 30 such that actuator group 30 can control virtual image generating component 22, at which point rotation mechanism 26 can be set to at least cycle = 1/60. The method rapidly yaws the virtual image generating element 22, that is, when the virtual image generating element 22 projects the virtual image to the front perspective plane mirror 28 under the number of yaws of up to 60 times or more per second, in the principle of persistence of the human eye vision. Next, the perspective plane mirror 28 presents a virtual image display screen.

Next, referring to FIG. 4, FIG. 5, FIG. 6 and FIG. 7 together, reference is made to FIG. 2 at the same time to illustrate the imaging diagram of the virtual image generating component of the present invention, the large-area imaging schematic, the optical characteristic diagram of the concave mirror and the arc. As shown in FIG. 4 and FIG. 5, the virtual image generating element 22 of the present invention may be a concave mirror 38 or a convex lens 40, which utilizes the optical principle of erecting a virtual image to generate a virtual image and has a large area. The image is imaged out of the window and the resulting virtual image can be matched at least to the actual lane line 42 and to the virtual image lane line 44.

As shown in FIG. 6, the concave mirror 38 of the present invention has optical characteristics. When the radius of curvature R is ∞, it is a concave mirror 38, and the focal length is ∞; when the radius of curvature R is 100, it is a concave mirror 38 having a curvature, and the focal length thereof. Is 50. The concave mirror 38 can produce a virtual image with a focal length of the formula (1):

f=R/2 (1)

The curved surface of the concave mirror 38 can also be set as an aspherical surface to avoid optical aberration. When the input image is placed in the focal length, the concave mirror 38 will present an enlarged virtual image, and the magnification is as shown in equations (2) and (3):

1/S+1/S'=1/f (2)

m=S'/S (3)

Wherein the formulae (1) to (3) R are the radius of curvature, S is the object distance, S' is the image distance, f is the focal length, and m is the magnification.

As shown in FIG. 7, a disclosed display device 10 is provided. If the technical content is applied to a vehicle, the area of the display screen provided may correspond to the virtual image lane line 44, and the screen may cover at least the width 4 Metric, 1 meter high, wherein the see-through plane mirror 28 is a flat sheet of high reflectivity optical film, the transmittance can be between 70% and 75%, and the reflectivity can be between 30% and 25%, and Placed in the window of the windshield 46, so that the driver can watch the virtual image in front through the perspective plane mirror 28 and the windshield 46 in sequence, and the virtual image will overlap with the front scene or the virtual image corresponding to the scene. For display, when the number of illuminating plane mirrors 28 and the matching optical path are sufficient, the fluoroscopic mirror 28 can be turned into a curved mirror 48 to display a large screen. In addition, the fluoroscopic mirror 28 can be adjusted, and the driver can Adjust your proper display angle at any time with your height and sitting position. The fifth and seventh drawings of the present invention are described with the vehicle as a vehicle. Therefore, the virtual image lane line 44 is used as an auxiliary explanation. Of course, any other mobile vehicle such as an aircraft and a ship should be correspondingly provided. The horizontal lines are implemented in the same principle and are clear, so the details are not repeated.

Referring to FIG. 8A, FIG. 8B and FIG. 8C together, the above-mentioned adjustable perspective plane mirror structure diagram, the adjustable perspective plane mirror schematic view and the adjustable perspective plane mirror top view of the present invention are used to illustrate the present invention. The perspective plane mirror 28 is adjustable, and the driver can adjust the appropriate display angle according to his height and sitting posture. As shown in FIG. 8A, the see-through plane mirror 28 can be fixed on the rotating mechanism 50, and the rotating mechanism 50 is set. On the rotary actuating mechanism 52, the rotating mechanism 50 can be turned clockwise and counterclockwise for the horizontal axis X, and the rotary actuating mechanism 52 can be turned clockwise and counterclockwise for the vertical axis Y, so that the see-through plane mirror 28 has Tonality, the appropriate display angle can be adjusted at any time with the height and sitting posture of the driving. As shown in FIGS. 8B and 8C, the rotating mechanism 50 and the rotary actuating mechanism 52 can be adjusted according to the position of the human eye 54. The optimum display angle of the flat mirror 28.

Referring to FIG. 9A, FIG. 9B and FIG. 9C, FIG. 9B is a schematic view showing a schematic view of the present invention, a schematic diagram of the left half and the right half of the polyscopic image, and a schematic diagram of the upper half and the lower half of the collective image. The inventive head-up display device 10 has a viewing range 56, and the see-through plane mirror 28 can reflect the virtual image into the viewing range 56 to present a large area of virtual image, since the first embodiment of the present invention is based on at least two input images. For illustrative purposes, there are therefore two optical paths to present the virtual image of the left half 58 , the right half 60 , or the upper half 62 and the lower half 64 to be reflected within the viewing range 56, when the virtual images are merged and then in the viewing range 56. The inside view is a large-area virtual image display. Similarly, if the present invention is changed to three or more input images, the virtual image of the viewing range 56 is three or more. In part, the implementation principles are the same and clear, so they will not be described again.

Next, with regard to the second embodiment of the present invention, reference may be made to FIG. 10 and also to FIG. 4, FIG. 9A, FIG. 9B, and FIG. 9C for explaining a second embodiment of the optical mechanism, as shown in the figure. The head-up display device 10 of the present invention further includes a light source generating component 65. The light source generating component 65 can generate a light source, and the optical mechanism 18 uses a digital micromirror device (DMD) as an implementation aspect of the developing unit 66. Since the imaging unit 66 is composed of a plurality of micromirrors, and each input image has a plurality of pixels, each of the micromirrors can respectively correspond to each pixel, and the micromirror and the pixel on the developing unit 66. The number is equal. When the developing unit 66 obtains the light source of the light source generating component 65, the developing unit 66 can generate one or more input images, and the developing unit 66 can control the light and dark state of each pixel (like the digital switch 0 and The state of 1), therefore, the developing unit 66 can decide which part of the pixel is to be projected, and when the micromirror on the developing unit 66 projects a part of the pixel to the virtual image generating element 68, the virtual image generating element 68 re-projects the virtual image to The plane mirror 28 can also achieve the purpose and effect of combining the partial virtual images of the first embodiment into a large-area virtual image display. As shown in FIG. 4, the virtual image generating element 68 can use the concave mirror 38 or the convex lens 40, and the same is true. The optical principle of the virtual image is enlarged to generate a virtual image. In the second embodiment, the rotation mechanism 70 is also used to control the rotation angle of the virtual image generating element 68, so that the virtual image generating element 68 can change the projection angle of the virtual image to project each pixel. To the see-through plane mirror 28 to respectively receive the virtual image and reflect into a large area virtual image, wherein the rotating mechanism 70 has the actuator group 72 and the power unit 74, and the actuator group 72 can be the gear 76, the rack 78 or a combination thereof, and the power unit 74 It is a stepping motor, and the rotating mechanism 70 also rapidly yaws the virtual image generating element 68 at least in a setting manner of a period of 1/60. The principle of the human eye vision persistence is the same as that of the first embodiment, and therefore will not be described again. In the second embodiment disclosed by the present invention, at least two input images are also taken as an example, so that the two light paths are also provided to present the left half 58, the right half 60 or the upper half 62, and the lower half. The virtual image of the half portion 64 is reflected into the viewing range 56, and its implementation principle is the same as that of the first embodiment, and will not be described again.

The foregoing embodiments of the present invention are disclosed above, but are not intended to limit the invention. Modifications and modifications made without departing from the spirit and scope of the invention are claimed in the scope of the invention. Please refer to the attached patent application for the scope of patents defined by the present invention.

10. . . Head up display device

12. . . Camera unit

14. . . Processing unit

16. . . Imaging unit

18. . . Optical mechanism

twenty two. . . Virtual image generating component

twenty four. . . Digital micromirror component

26. . . Rotating mechanism

28. . . Perspective plane mirror

30. . . Motivation group

32. . . Power unit

34. . . gear

36. . . rack

38. . . concave mirror

40. . . Convex lens

42. . . Actual lane line

44. . . Virtual image lane line

46. . . windshield

48. . . Curved mirror

50. . . Rotating mechanism

52. . . Rotary actuation mechanism

54. . . Human eye

56. . . Polyscope range

58. . . Left half

60. . . Right half

62. . . Upper half

64. . . Lower half

65‧‧‧Light source generating components

66‧‧‧Digital micromirror components

68‧‧‧virtual image generating components

70‧‧‧Rotating mechanism

72‧‧‧Activity Group

74‧‧‧Power unit

72‧‧‧Activity Group

76‧‧‧ Gears

78‧‧‧Racks

S‧‧‧

S’‧‧‧ image distance

F‧‧•focal length

Figure 1 is a block diagram of the device architecture of the present invention.

Figure 2 is a schematic view of a first embodiment of an optical mechanism.

Fig. 3A is a structural diagram of the virtual image generating element.

Fig. 3B is a structural diagram of the virtual image generating element and the rotating mechanism.

Fig. 4 is a schematic view showing the imaging of the virtual image generating element of the present invention.

Figure 5 is a schematic representation of a large area imaging.

Figure 6 is a schematic diagram of the optical characteristics of a concave mirror.

Figure 7 is a schematic diagram of a curved mirror image.

Figure 8A is a structural view of an adjustable perspective plane mirror.

Figure 8B is a schematic plan view of an adjustable perspective plane mirror.

Figure 8C is a top plan view of an adjustable perspective plane mirror.

Figure 9A is a schematic view of the polyscopic range.

Figure 9B is a schematic view of the left and right halves of the image.

Figure 9C is a schematic view of the upper half and the lower half of the image.

Figure 10 is a schematic view of a second embodiment of the optical mechanism.

16. . . Imaging unit

18. . . Optical mechanism

twenty four. . . Digital micromirror element

28. . . Perspective plane mirror

Claims (10)

A head-up display device comprising: at least one image developing unit, which can generate one or more input images; at least one virtual image generating component, the virtual image generating component can receive the input image and generate at least one virtual image; and a rotating mechanism can control the The virtual image generates a rotation angle of the component, so that the virtual image generation component changes the virtual image projection angle; and the plurality of perspective planar mirrors respectively receive the virtual image and reflect the large-area virtual image. The head-up display device of claim 1, wherein when the virtual image generating elements are plural, they may be arranged in a matrix array to form a digital micromirror device, and each of the input images has a plurality of pixels, and each of the virtual image generating elements Corresponding to at least one of the pixels, the rotating mechanism has at least two yaw states, and the number of the see-through mirrors is equal to the number of the yaw states. The head-up display device of claim 1, further comprising a light source generating component, wherein the light source generating component generates a light source, wherein the developing unit is a digital micromirror component and has a plurality of micromirrors, and is composed of the micromirror a matrix array, the imaging unit can obtain the light source to generate the input image, wherein each of the input images has a plurality of pixels, each of the micromirrors respectively corresponding to each of the pixels, and the number of the micromirrors is associated with the pixel The number is equal. The head-up display device of claim 1, wherein the rotating mechanism further comprises a consistent motivation group and a power unit, and the power unit can generate power to drive the actuator group, so that the actuator group can control the virtual image generating component. The power unit is a stepping motor or a micro motor. The head-up display device of claim 1, wherein the developing unit is a liquid crystal display or a digital light processing projector. The head-up display device of claim 1, wherein there is a viewing range, and the see-through plane mirror reflects the large-area virtual image to be within the viewing range. The device of claim 1 further comprising at least one camera unit and at least one processing unit, the processing unit being electrically connected to the camera unit and the image forming unit, wherein the camera unit can capture an external signal. The processing unit can receive the external signal of the camera unit and process the external signal and a carrier signal into an image signal, and the processing unit can transmit the image signal to the image forming unit, so that the image forming unit can generate the input image. The head-up display device of claim 7, wherein the external signal can be a lane line, a horizontal line or an obstacle profile; the vehicle signal can be a vehicle operating temperature, a rotational speed, a speed, a navigation information, a tire pressure, and a shift Tips, Steering, Reversing Tips, Obstacle Warning, Flight Height, Flight Speed, Heading, Vertical Rate Change, Vehicle Tilt Angle, Wind Direction Information, Vehicle Travel or Idle Signal. The head-up display device of claim 1, wherein the virtual image generating element is a concave mirror, a convex lens, or a combination thereof. The head-up display device according to claim 1, wherein the see-through plane mirror is a flat sheet of a high-reflectance optical film, and the transmittance may be 70% to 75%, and the reflectance may be 30% to 25%. The flat mirror is adjustable to adjust the appropriate display angle.