CN115469462A - Head-up display and head-up display equipment - Google Patents
Head-up display and head-up display equipment Download PDFInfo
- Publication number
- CN115469462A CN115469462A CN202211366292.1A CN202211366292A CN115469462A CN 115469462 A CN115469462 A CN 115469462A CN 202211366292 A CN202211366292 A CN 202211366292A CN 115469462 A CN115469462 A CN 115469462A
- Authority
- CN
- China
- Prior art keywords
- image
- light
- imaging
- display
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003384 imaging method Methods 0.000 claims abstract description 171
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 56
- 238000007493 shaping process Methods 0.000 claims description 16
- 210000001747 pupil Anatomy 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 210000003128 head Anatomy 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
- G02B30/35—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using reflective optical elements in the optical path between the images and the observer
-
- 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
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
- G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
-
- 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
- G02B2027/0183—Adaptation to parameters characterising the motion of the vehicle
Abstract
The disclosure relates to the technical field of optical display, and particularly provides a head-up display and a head-up display device. The head-up display includes an image generating device and a vibrating mirror. The image generation device is used for alternately generating the imaging light of the first image and the imaging light of the second image. The vibrating reflector is switched between a first position and a second position, and the vibrating reflector reflects light rays from the image generating device to the imaging device along a first light path under the first position; the oscillating mirror reflects light from the image generating device to the imaging device along a second optical path in the second position. And the conversion frequency of the imaging light of the first image and the imaging light of the second image is equal to the conversion frequency of the first position and the second position of the vibrating reflector. The head-up display is used for emitting imaging light to the imaging device. By implementing the head-up display and the head-up display device of the exemplary embodiment of the disclosure, a naked-eye 3D effect can be achieved.
Description
Technical Field
The disclosure relates to the technical field of optical display, in particular to a head-up display and a head-up display device.
Background
Head Up Display (Head Up Display), also called Head Up Display system, is abbreviated as HUD. The head-up display has the effect of projecting important driving information such as speed per hour, navigation and the like onto an imaging plate or windshield glass in front of a driver by an optical mirror reflection principle, so that the driver can see the important driving information such as speed per hour, navigation and the like without lowering head or turning head as much as possible, and the driving safety can be effectively improved.
At present, the head-up display can only provide a plane image generally, and the reality is poor. However, since the head-up display is often used in the in-vehicle field, it is not suitable for a device for assisting in generating a 3D image, such as wearing dedicated 3D glasses.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present disclosure is to provide a new line display and new line display equipment, can realize bore hole 3D's effect, promote customer experience.
According to an aspect of the present disclosure, there is provided a head-up display for emitting imaging light to an imaging device, the head-up display including:
image generating means for alternately generating an imaging light ray of the first image and an imaging light ray of the second image;
the vibrating mirror is switched between a first position and a second position, the vibrating mirror reflects the light from the image generating device to the imaging device along a first light path under the first position, and reflects the light from the image generating device to the imaging device along a second light path under the second position;
and the conversion frequency of the imaging light of the first image and the imaging light of the second image is equal to the conversion frequency of the first position and the second position of the vibrating reflector.
In an exemplary embodiment of the present disclosure, an image generating apparatus includes:
a light source for emitting light;
the display substrate is used for alternately generating a first image and a second image so as to convert the light projected to the display substrate into imaging light of the first image or imaging light of the second image;
the vibration reflector is arranged between the light source and the light path of the display substrate, and projects light rays emitted by the light source to the display substrate so as to generate imaging light rays of a first image or imaging light rays of a second image;
the first image and the second image of the display substrate have a frequency equal to the first position and the second position of the oscillating mirror.
In an exemplary embodiment of the present disclosure, the image generating apparatus further includes a light shaping unit disposed between the light source and the optical path of the display substrate;
the light shaping unit is used for changing the divergence angle of light rays emitted by the light source, so that imaging light rays of the first image are emitted from the display substrate in a first angle interval; the imaging light of the second image is emitted from the display substrate in a second angle interval.
In an exemplary embodiment of the present disclosure, the first angle interval and the second angle interval each correspond to a preset monocular pupil diameter.
In an exemplary embodiment of the present disclosure, the exit angles of the first angle interval and the second angle interval do not intersect.
In an exemplary embodiment of the present disclosure, the light shaping unit includes:
the light of the light source passes through the condenser lens, and then the divergence angle is reduced;
the light of the light source passes through the dodging lens, and the uniformity is improved.
In an exemplary embodiment of the present disclosure, a frequency of the transformation of the first image and the second image of the display substrate is not less than 48Hz.
In an exemplary embodiment of the present disclosure, a vibrating mirror includes: a mirror surface, a mirror frame, a first rotation axis, and a second rotation axis;
the mirror is hinged to the mirror frame through a first rotating shaft and a second rotating shaft, the mirror reflects light projected onto the mirror, and the first rotating shaft and the second rotating shaft are not parallel.
According to another aspect of the present disclosure, there is provided a head up display apparatus including:
any one of the above head-up displays; and, an imaging device;
the imaging device is used for receiving imaging light of the first image and forming a first target image in a first observation range; the imaging device is also used for receiving the imaging light of the second image and forming a second target image in a second observation range.
In an exemplary embodiment of the present disclosure, an image forming apparatus includes:
an imaging screen;
the first reflector is arranged between the image generating device and the optical path of the imaging screen and reflects the imaging light of the first image or the imaging light of the second image to the imaging screen;
the imaging screen is used for receiving imaging light of the first image from the first reflector and forming a first target image in a first observation range; the imaging screen is also used for receiving imaging light of the second image from the first reflector and forming a second target image in a second observation range;
the first mirror is angularly adjustably positioned relative to the imaging screen to move the first target image or the second target image across the imaging screen.
In an exemplary embodiment of the present disclosure, the imaging screen includes a windshield.
In an exemplary embodiment of the present disclosure, the imaging device further includes a second reflecting mirror disposed between the image generating device and an optical path of the first reflecting mirror, the second reflecting mirror being configured to reflect the imaging light of the first image or the imaging light of the second image to the first reflecting mirror.
The head-up display and the head-up display device can form the imaging light of a first image and the imaging light of a second image along different optical paths, and form a first target image and a second target image in a first observation range and a second observation range respectively.
In actual use, the first observation range and the second observation range may correspond to the single-eye observation ranges of the left and right eyes of an observer such as a driver, respectively. When the oscillating mirror is in the first position, one eye of the driver can observe one target image, and when the oscillating mirror is in the second position, the other eye of the driver can observe another target image due to the change of the optical path. The imaging light of the first image and the imaging light of the second image are reflected alternately through the vibrating reflector, and the imaging light is imaged alternately in the observation ranges of the two eyes of a driver, so that the images of the left eye and the right eye generate parallax, the naked eye 3D effect is formed, the driver does not need to wear auxiliary equipment, and the driving comfort is improved.
In addition, compared with the scheme of providing the head-up display of the two-dimensional image, the vibrating reflector mainly changes the light path of the imaging light projected to the imaging device, so that the imaging device is not greatly changed, only the light path of the imaging device needs to be adjusted to be adapted to the head-up display, and the development and production cost can be reduced. The exterior of the head-up display device can be not greatly changed, which is beneficial to the arrangement of the head-up display device on vehicles and other carriers.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived by those of ordinary skill in the art without inventive effort.
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
fig. 1 schematically illustrates a structural view of a head-up display apparatus according to an exemplary embodiment of the present disclosure.
Fig. 2 schematically illustrates a schematic view of a left-eye image, a right-eye image, and a stereoscopic image according to an exemplary embodiment of the present disclosure.
Fig. 3 schematically shows a schematic view of the rotation angle of the oscillating mirror in the XY plane according to an exemplary embodiment of the present disclosure.
Fig. 4 schematically illustrates a rotation angle diagram in YZ-plane of a vibrating mirror according to an exemplary embodiment of the present disclosure.
The reference numerals are explained below:
1. a light source; 2. vibrating a mirror; 3. a display substrate; 4. a second reflector; 5. a first reflector; 6. an imaging screen; 7. the left eye of the observer; 8. the right eye of the observer; 101. a left eye image; 102. a right eye image; 103. and (3) stereo images.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, it is to be understood that the terms "a," "an," "the," and "said" are intended to mean that there are one or more of the elements/components/etc.; the terms "comprising" and "having" are intended to mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects. The "image" may represent a real image or a virtual image. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
An object of the present disclosure is to provide a new line display and new line display device, can realize bore hole 3D's effect. The head-up display and the head-up display apparatus of the present disclosure will be described in detail with reference to fig. 1 to 4.
According to an aspect of the present disclosure, there is provided a head up display, as shown in fig. 1, for emitting imaging light to an imaging device, the head up display including an image generating device and a vibrating mirror 2. The image generation device is used for alternately generating imaging light rays of a first image and imaging light rays of a second image. The vibrating reflector 2 is switched between a first position and a second position, and the vibrating reflector 2 reflects the light from the image generating device to the imaging device along a first light path under the first position; the oscillating mirror 2 reflects light from the image generating device to the imaging device along a second optical path in a second position. Wherein the conversion frequency of the imaging light of the first image and the imaging light of the second image is equal to the conversion frequency of the first position and the second position of the oscillating mirror 2.
The head-up display can form the imaging light of the first image and the imaging light of the second image along different optical paths and emit the imaging light to the imaging device. So that a first target image and a second target image are formed in the first observation range and the second observation range, respectively, after passing through the imaging device.
In actual use, the first observation range and the second observation range may correspond to the left and right monocular observation ranges of an observer such as a driver, respectively. When the oscillating mirror 2 is in the first position, one eye of the driver can observe one target image, for example, the left eye image 101 for the left eye, and when the oscillating mirror 2 is in the second position, another eye of the driver can observe another target image, for example, the right eye image 102 for the right eye, due to the change of the optical path. The imaging light of the first image and the second image is reflected alternately by the vibrating reflector 2, and imaging is performed alternately in the observation ranges of the two eyes of the driver, so that parallax of the images of the left eye and the right eye is generated, a naked eye 3D effect is formed, the driver does not need to wear auxiliary equipment, and the driving comfort is improved. Of course, the driver may also see the right eye image 102 with the right eye of the vibrating mirror 2 in the first position. That is, the position of the oscillating mirror 2 and the imaging light of the image generating device are switched at the same frequency, and the position of the oscillating mirror 2 and the imaging light of the image generating device are matched with each other, so that the observer can perceive the stereoscopic image 103 in a continuous process.
Furthermore, in a heads-up display device, the image generating portion and the imaging device are generally relatively independent and assembled together at the time of assembly. The imaging device is bulky and includes a plurality of complex components such as a housing and a mirror. Compared with the existing scheme for providing the head-up display of the two-dimensional image, the vibration reflector 2 mainly changes the light path of the imaging light projected to the imaging device, so that the imaging device is not greatly changed, the light path is only required to be adjusted to be adapted to the head-up display, and the development and production cost can be reduced. The exterior of the head-up display device can be not greatly changed, which is beneficial to the arrangement of the head-up display device on vehicles and other carriers.
Further, in the related art, a scheme for realizing naked-eye 3D in the display field includes a technique of a 3D display screen. Generally, a slit grating or a lenticular lens layer is arranged on one side of the display screen, which emits image light, so that half of pixels of the screen display a left eye image 101, and the other half of pixels display a right eye image 102, and then visual images of left and right eyes are separated and enter the observation ranges of a left eye 7 and a right eye 8 of an observer to form parallax. Or the light rays of the emergent image of the display screen are polarized and screened, so that the left eye image and the right eye image are separated. However, such solutions reduce the brightness and resolution of the final image observed by the human eye and have relatively strict requirements on the position of observation, which is only visible at a relatively fixed position. For example, in the slit grating technology, the backlight of the light source is shielded by the parallax barrier, thereby seriously affecting the display brightness; in the scheme of applying the lenticular lens principle, the lenticular lens reflects external light very strongly and is easily interfered by stray light to influence the display quality.
In the exemplary embodiment of the present disclosure, the vibrating mirror 2 reflects the light from the image generating device to the imaging device in the first position or the second position without screening the light. The image generating device continuously changes the imaging light of the left-eye image and the right-eye image, and the vibrating reflector 2 also adjusts the reflection angle at the same frequency, so that the imaging light of the left-eye image 101 can only reach the observation range of the left eye 7 of the observer, and the imaging light of the right-eye image 102 can only reach the observation range of the right eye 8 of the observer. Through calculation, when the switching speed of the imaging light and the vibrating reflector 2 reaches above a certain frequency, continuous and different pictures can be seen by two eyes of a person according to the visual persistence principle, so that stereoscopic vision is generated. Referring to fig. 2, a left-eye image 101 and a right-eye image 102 may be synthesized into a stereoscopic image 103 in a human visual system.
It can be seen that in the process of monocular imaging each time, all light rays of the image generation device are used for monocular imaging, so that the resolution and the brightness of the image can be ensured not to be lost.
Specifically, the image generating device may include a light source 1 and a display substrate 3. The light source 1 is configured to emit light, and the display substrate 3 is configured to alternately generate a first image and a second image, so that the light projected onto the display substrate 3 is converted into an imaging light of the first image or an imaging light of the second image. Of course, the same thing as the above is that the first image includes image information corresponding to one of the left-eye image 101 or the right-eye image 102, and the second image includes image information corresponding to the other of the left-eye image 101 or the right-eye image 102, such as a pixel arrangement pattern on the display substrate 3.
For example, the head-up display may further include an image control module and a processor, which may acquire and control the first image and the second image generated by the display substrate 3 and the intensity of the light emitted from the light source 1. The image control module and the processor may be integrated into a head-up display device, or may be integrated into a device carrying a head-up display, such as a central control system of an automobile. The display substrate 3 alternately generates the first image and the second image, and may be a monocular image in which a processor generates a pattern of a vehicle speed, a navigation, a road condition, and the like to be projected onto the windshield by executing a specific computer program. The light source 1 can be a light-emitting lamp tube or an LED lamp bead, and the display substrate 3 can be a TFT (thin film transistor) liquid crystal display screen and the like.
In an exemplary embodiment, referring to fig. 1, the oscillating mirror 2 is disposed between the light source 1 and the optical path of the display substrate 3, and the oscillating mirror 2 projects light emitted from the light source 1 to the display substrate 3 to generate imaging light of the first image or imaging light of the second image. Of course, the frequency of the first and second images of the display substrate 3 and the frequency of the first and second positions of the oscillating mirror 2 should also be equal to ensure that the oscillating mirror 2 fits the image generating device.
The first image is illustrated as corresponding to the left-eye image 101, and it can be understood that, on the basis of this, a person skilled in the art can easily think that the first image corresponds to the right-eye image 102 without affecting the implementation of the present solution.
In an exemplary embodiment, when the oscillating mirror 2 is in the first position, light emitted from the light source 1 is reflected by the oscillating mirror 2 and enters the display substrate 3 along the first optical path. At this time, the display substrate 3 displays the first image, the light passes through the display substrate 3 to become imaging light including left-eye image information, and is emitted from the display substrate 3 to the imaging device at a certain emission angle, and the left-eye image 101 is formed in the observation range of the left eye 7 of the observer after passing through the imaging device.
Similarly, when the vibrating mirror 2 is at the second position, the angle is changed compared with the first position, and the light emitted from the light source 1 is reflected by the vibrating mirror 2, i.e. enters the display substrate 3 along a second light path different from the first light path. At this time, the display substrate 3 displays the second image, the light passes through the display substrate 3 to become imaging light including information of the right eye image, and is emitted from the display substrate 3 to the imaging device, and the right eye image 102 is formed in the observation range of the right eye 8 of the observer after passing through the imaging device. Obviously, since the light source 1 and the display substrate 3 are unchanged and the oscillating mirror 2 is rotated, the angle at which the imaging light of the right-eye image 102 exits to the imaging device is also different.
Since the whole head-up display device transmits light rays by the optical reflection principle, according to the reflection law, on the premise that the imaging device is unchanged, the angle of the light rays entering human eyes after finally passing through the imaging device is only related to the angle of the imaging light rays initially emitted from the display substrate 3. Establish vibrating mirror 2 in the one end of light incidence display substrate 3, through the angle of adjustment vibrating mirror 2, just can the direct control light get into the angle of display substrate 3, and then the angle of the formation of image light of control outgoing on display substrate 3, and need not to increase other optical device again, make the structure more succinct, can reduce cost, and convenient to overhaul. Viewed from another aspect, before the light enters the display substrate 3, the process of adjusting the optical path by the vibrating mirror 2 is compared with the existing head-up display, the optical path principle of the light emitted from the display substrate 3 and the optical devices that need to pass through are not changed greatly, so that the imaging device and the components such as the housing of the head-up display device can not be modified greatly, the cost of development and manufacture can be reduced, and the arrangement of the head-up display device is facilitated.
Of course, in another exemplary embodiment, the image generation device may be a self-luminous display panel such as an OLED or a Micro LED, in which case the vibration mirror 2 may be disposed on the side of the exit end of the image generation device, i.e., between the vibration mirror 2 and the optical path of the imaging device. In this way, it is necessary to add other optical devices to assist the adjustment of the optical path, so that the imaging light reflected by the oscillating mirror 2 enters the imaging device.
In an exemplary embodiment of the present disclosure, the image generating apparatus further includes a light shaping unit disposed between the light source 1 and the optical path of the display substrate 3. The light shaping unit is used for changing the divergence angle of the light emitted by the light source 1, so that the imaging light of the first image is emitted from the display substrate 3 in a first angle interval; the imaging light of the second image is emitted from the display substrate 3 in the second angle range.
Specifically, the divergence angle of the light source 1 such as a light-emitting lamp bead is generally large. In imaging, the divergence angle of the light beam emitted from the light source 1 affects the angle at which the final light rays exit from the imaging device, i.e., the angle at which the light rays enter the human eye, thereby affecting the range at which the target image can be observed. In the existing head-up display that provides a two-dimensional image, the range of binocular observation is not distinguished, and therefore both the observer's left eye 7 and the observer's right eye 8 can observe target images of both eyes. The divergence angle of the light is controlled by the light shaping unit, so that the imaging light of the first image and the imaging light of the second image are both in the respective preset angle interval, and the divergence angle of the light can be matched with the observation range of a single eye of a person. For example, the light shaping unit may include a condensing lens, and the divergence angle of the light source 1 is reduced after passing through the condensing lens. The condenser lens may specifically be a lens group of one or more aspherical lenses.
It should be particularly emphasized that the "first angle interval" and the "second angle interval" in the present disclosure refer to a range of a spatial angle formed between the outgoing side of the light and the display substrate 3 when the light is emitted from the display substrate 3. In an exemplary embodiment of the present disclosure, the exit angles of the first angle interval and the second angle interval do not intersect, so that no imaging light of the right eye image 102 exits in the observation range of the left eye 7 of the observer, and no imaging light of the left eye image 101 exits in the observation range of the right eye 8 of the observer, which avoids mutual interference between the left eye image and the right eye image and influences the implementation effect of naked eye 3D. It will be understood by those skilled in the art that the "angle interval" and the "angle range" refer to angle information including directions, rather than absolute values of spatial angle values without direction information. For example, when the imaging light of the left-eye image 101 and the imaging light of the right-eye image 102 are symmetrically emitted from the common normal direction of the display substrate 3, it is understood that the emission angles are different.
In an exemplary embodiment of the present disclosure, the first angle interval and the second angle interval each correspond to a preset monocular pupil diameter. In particular, it has been explained in detail in the foregoing that the divergence angle of the light beam for imaging emitted by the light source 1 should not be too large, in particular should not encompass the binocular viewing range of the observer; in practice, the divergence angle of the light beam used for imaging should not be too small, and specifically, it should be ensured that the observers with different interpupillary distances can observe the target images of the left eye and the right eye respectively in both eyes.
The preset monocular pupil diameter is a human eye parameter set according to a study on a population and a software simulation, and it is considered that the preset monocular pupil diameter can cover a monocular observation range of an observer in a normal case. Specifically, for most people, the viewing range of the left eye 7 of the observer falls within the preset left-eye monocular pupil diameter, and correspondingly, the viewing range of the right eye 8 of the observer also falls within the preset right-eye monocular pupil diameter. The pupil distance of most human eyes can be covered by the observation range in which a monocular image can be observed through the adjustment of the divergence angle of the light beam by the light shaping unit and the adjustment of the exit angle by the vibrating mirror 2.
In an exemplary embodiment of the present disclosure, the light shaping unit may further include a dodging lens, and the uniformity of the light source 1 is improved after passing through the dodging lens. Specifically, the uniformity of the light beam emitted from the light source 1 such as a light-emitting lamp bead is generally poor, and the luminance is not uniform during imaging, which easily affects the imaging effect. The dodging lens may be a lens group composed of optical elements such as a micro lens array, an aspheric lens, and a fly eye lens, but is not limited thereto, and the brightness distribution of light passing through the dodging lens is more uniform, thereby avoiding the generation of light spots and dark areas during imaging.
In an exemplary embodiment of the present disclosure, the frequency of the transformation of the first image and the second image of the display substrate 3 is not less than 48Hz. According to experiments, for a single eye, when the refresh frequency of the image is greater than 24Hz, the human eye can see a continuous image. That is, when the conversion frequency of the first image and the second image on the display substrate 3 is not less than 48Hz, the image generating device and the oscillating mirror 2 operate at the same frequency, so that the human eyes can observe continuous stereoscopic images.
In an exemplary embodiment of the present disclosure, the vibrating mirror 2 includes: mirror surface, mirror holder, first rotation axis and second rotation axis. The mirror is fixedly arranged relative to the image generation device, the mirror is hinged to the mirror frame through a first rotating shaft and a second rotating shaft, the mirror reflects light projected onto the mirror, and the first rotating shaft and the second rotating shaft are not parallel.
The mirror surface of the oscillating mirror 2 rotates about at least two rotation axes which are not parallel, so that the rotation angle of the mirror surface between the first position and the second position is a spatial angle having components of two or three different dimensions in space. When the angle of the vibrating mirror 2 is adjusted to adapt to the preset monocular pupil diameter, the light path for left eye imaging and the light path for right eye imaging can be adjusted more flexibly. For example, the oscillating mirror 2 may be a fast mirror or a Digital Micromirror (DMD) device, or the like.
The rotation angle of the mirror surface of the oscillating mirror 2 can be calculated according to the angle of the imaging device at the position corresponding to the human eye. For example, referring to fig. 3 and 4, when the rotation angle of the oscillating mirror 2 in the first position with respect to a reference plane is a spatial angle α, the rotation angle can be decomposed into an angle a in the XY plane and an angle c in the YZ plane, so as to provide an illumination light with an angle M for the display substrate 3, and at this time, the display substrate 3 displays image information of a left eye, and then the image is displayed on a left eye 7 of an observer by the imaging device; when the rotation angle of the oscillating mirror 2 relative to the same reference plane at the second position is a spatial angle β, the angle may be decomposed into an angle b in the XY plane and an angle d in the YZ plane, so as to provide the display substrate 3 with an illumination light of an angle N, and at this time, the display substrate 3 displays image information of the right eye, and then the image is displayed on the right eye 8 of the observer by the imaging device.
According to another aspect of the present disclosure, there is provided a head up display apparatus, as shown in fig. 1, including the head up display and the imaging device of any one of the above.
The imaging device is used for receiving imaging light of the first image and forming a first target image in a first observation range; the imaging device is also used for receiving the imaging light of the second image and forming a second target image in a second observation range.
For example, the imaging device may include an imaging screen 6, a first mirror 5, and a second mirror 4. The first mirror 5 and the second mirror 4 are both arranged between the image generating device and the optical path of the imaging screen 6. The second mirror 4 deflects, compresses and optimizes the imaging light from the image generating means, while the first mirror 5 deflects, compresses and optimizes the light from the second mirror 4 further and projects it onto the imaging screen 6. By reflection from the imaging screen 6, a first target image is formed in the first viewing range or a second target image is formed in the second viewing range. The first reflector 5 may be a plane reflector or a curved reflector, and the second reflector 4 may also be a plane reflector or a curved reflector.
In an exemplary embodiment, the first mirror 5 is angularly adjustable relative to the imaging screen 6 to move the first target image or the second target image over the imaging screen 6. For example, the first reflector 5 is provided with an axial overturning shaft, so that observation light rays at different positions in the horizontal direction can be expanded in the vertical direction, and the height of the observer observed by eyes can be adapted to the change of the sitting posture and the height of the observer.
In an exemplary embodiment, the angles of the first mirror 5, the oscillating mirror 2, and the light shaping unit described above to adjust the divergence angle of the light are all controllable. When the pupil distance or the observation height of the observer do not match, the pupil distance or the observation height can be adjusted by controlling the actions of the first reflecting mirror 5, the vibrating reflecting mirror 2 and the light shaping unit. In addition, the angles that the first reflector 5, the oscillating reflector 2 and the light shaping unit should adjust can be calculated according to the specific values of the pupil parameters by simulation software such as zemax, light tools and the like.
The imaging screen 6 may be a projection screen or a display screen, etc. according to different application scenarios of the head-up display device. When applied to an in-vehicle scene, the imaging screen 6 may comprise a windshield. The heads-up display device may be an AR-HUD (augmented reality heads-up display). Since the relative position between the driver and the windshield is generally not changed greatly when the driver drives, the left eye image 101 and the right eye image 102 are directly formed on the windshield in front of the driver, so that a 3D display effect is realized, and the number of times of adjusting the optical devices such as the vibrating mirror 2, the light shaping unit, the first mirror 5 and the second mirror 4 can be reduced.
By implementing the head-up display device of the exemplary embodiment of the disclosure, a naked-eye 3D effect can be formed in a visual system of an observer such as a driver, the driver does not need to wear auxiliary equipment, and the driving comfort is improved.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A heads-up display for emitting imaging light to an imaging device, the heads-up display comprising:
image generating means for alternately generating an imaging light ray of the first image and an imaging light ray of the second image;
a vibrating mirror that switches between a first position in which it reflects light from the image generating device to the imaging device along a first optical path and a second position in which it reflects light from the image generating device to the imaging device along a second optical path;
wherein a conversion frequency of the imaging light of the first image and the imaging light of the second image is equal to a conversion frequency of the first position and the second position of the oscillating mirror.
2. The heads-up display of claim 1 wherein the image generation means comprises:
a light source for emitting light;
the display substrate is used for alternately generating a first image and a second image so as to convert light projected to the display substrate into imaging light of the first image or imaging light of the second image;
the vibration reflector is arranged between the light source and the light path of the display substrate, and projects light rays emitted by the light source to the display substrate so as to generate imaging light rays of the first image or imaging light rays of the second image;
the first and second images of the display substrate have a switching frequency equal to the switching frequency of the first and second positions of the oscillating mirror.
3. The heads-up display of claim 2 wherein the image generation device further comprises a light shaping unit disposed between the light source and the optical path of the display substrate;
the light shaping unit is used for changing the divergence angle of the light emitted by the light source, so that the imaging light of the first image is emergent from the display substrate in a first angle interval; and the imaging light of the second image is emitted from the display substrate in a second angle range.
4. The heads-up display of claim 3 wherein the first and second angular intervals each correspond to a predetermined monocular pupil diameter.
5. The heads-up display of claim 3 wherein the exit angles of the first and second angle intervals do not intersect.
6. The heads-up display of claim 3 wherein the light shaping unit comprises:
the light of the light source passes through the condenser lens, and the divergence angle is reduced;
and the light of the light source passes through the dodging lens, so that the uniformity is improved.
7. The heads-up display of claim 2 wherein the first image and the second image of the display substrate have a transition frequency of no less than 48Hz.
8. The heads-up display of claim 1 wherein the vibrating mirror comprises: a mirror surface, a mirror frame, a first rotation axis, and a second rotation axis;
wherein the mirror holder is fixedly disposed with respect to the image generating device, the mirror surface is hinged to the mirror holder by the first rotation axis and the second rotation axis, the mirror surface reflects light projected onto the mirror surface, and the first rotation axis and the second rotation axis are not parallel.
9. A heads-up display device, comprising:
the heads-up display of any one of claims 1-8; and, an imaging device;
the imaging device is used for receiving imaging light of the first image and forming a first target image in a first observation range; the imaging device is also used for receiving the imaging light of the second image and forming a second target image in a second observation range.
10. The heads-up display apparatus according to claim 9, wherein the imaging device includes:
an imaging screen;
the first reflector is arranged between the image generating device and the optical path of the imaging screen and reflects the imaging light of the first image or the imaging light of the second image to the imaging screen;
the imaging screen is used for receiving imaging light of the first image from the first reflector and forming a first target image in the first observation range; the imaging screen is also used for receiving imaging light of the second image from the first reflector and forming a second target image in the second observation range;
the first mirror is angularly adjustably positioned relative to the imaging screen to move the first target image or the second target image across the imaging screen.
11. The heads-up display device of claim 10 wherein the imaging screen comprises a windshield.
12. The heads-up display apparatus of claim 10 wherein the imaging device further comprises a second mirror disposed between the image generating device and the optical path of the first mirror, the second mirror configured to reflect the imaging light of the first image or the imaging light of the second image to the first mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211366292.1A CN115469462A (en) | 2022-11-03 | 2022-11-03 | Head-up display and head-up display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211366292.1A CN115469462A (en) | 2022-11-03 | 2022-11-03 | Head-up display and head-up display equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115469462A true CN115469462A (en) | 2022-12-13 |
Family
ID=84338038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211366292.1A Pending CN115469462A (en) | 2022-11-03 | 2022-11-03 | Head-up display and head-up display equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115469462A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205427328U (en) * | 2016-03-17 | 2016-08-03 | 深圳子午线科技有限公司 | Plane formula timesharing display device |
| CN213987058U (en) * | 2020-12-04 | 2021-08-17 | 深微光电科技(深圳)有限公司 | Double-lens time-sharing light splitting optical path and optical equipment |
| CN114815236A (en) * | 2021-01-27 | 2022-07-29 | 怡利电子工业股份有限公司 | Symmetrical light path 3D head-up display |
-
2022
- 2022-11-03 CN CN202211366292.1A patent/CN115469462A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205427328U (en) * | 2016-03-17 | 2016-08-03 | 深圳子午线科技有限公司 | Plane formula timesharing display device |
| CN213987058U (en) * | 2020-12-04 | 2021-08-17 | 深微光电科技(深圳)有限公司 | Double-lens time-sharing light splitting optical path and optical equipment |
| CN114815236A (en) * | 2021-01-27 | 2022-07-29 | 怡利电子工业股份有限公司 | Symmetrical light path 3D head-up display |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9182604B2 (en) | Minimized-thickness angular scanner of electromagnetic radiation | |
| US5754344A (en) | Head-mounted stereoscopic image display apparatus | |
| US6078427A (en) | Smooth transition device for area of interest head-mounted display | |
| US6222675B1 (en) | Area of interest head-mounted display using low resolution, wide angle; high resolution, narrow angle; and see-through views | |
| JP3492251B2 (en) | Image input device and image display device | |
| JP7003925B2 (en) | Reflectors, information displays and mobiles | |
| JP2009128565A (en) | Display device, display method and head-up display | |
| US10410566B1 (en) | Head mounted virtual reality display system and method | |
| US10955685B2 (en) | Volumetric display arrangement and a method for representing content of an image | |
| US9684166B2 (en) | Motor vehicle and display of a three-dimensional graphical object | |
| CN114365027A (en) | System and method for displaying object with depth of field | |
| CN113661432B (en) | Head-up display device | |
| JP4945691B2 (en) | Display device, display method, and head-up display | |
| US20230077212A1 (en) | Display apparatus, system, and method | |
| JP2020095271A (en) | Device and method for displaying three-dimensional images | |
| CN115469462A (en) | Head-up display and head-up display equipment | |
| US20060158731A1 (en) | FOCUS fixation | |
| JP7424823B2 (en) | image display device | |
| US20210294119A1 (en) | Display apparatus for rendering three-dimensional image and method therefor | |
| JP7127415B2 (en) | virtual image display | |
| CN112526748A (en) | Head-up display device, imaging system and vehicle | |
| CN108732772B (en) | Display device and driving method thereof | |
| JP2011128235A (en) | Display device and display method | |
| JP2002156599A (en) | Image observation apparatus and image observation system using the same | |
| CN210666207U (en) | Head-up display device, imaging system and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221213 |
|
| RJ01 | Rejection of invention patent application after publication |