CN119556469A - Optical element, head-up display system and vehicle - Google Patents
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Abstract
本公开涉及抬头显示器技术领域，尤其涉及一种光学元件、抬头显示器以及交通工具。光学元件包括基底透镜，所述基底透镜为片状透镜，且所述基底透镜上设置有方向控制单元和弥散单元。通过一个光学元件即可实现对光路的方向控制和弥散效果，减小了光学元件的占用空间，从而便于控制抬头显示器的整体体积，同时，还可以降低光学元件的成本。
The present disclosure relates to the technical field of head-up display, and in particular to an optical element, a head-up display, and a vehicle. The optical element includes a base lens, which is a sheet lens, and a direction control unit and a diffusion unit are arranged on the base lens. Direction control and diffusion effect of the light path can be achieved through one optical element, which reduces the space occupied by the optical element, thereby facilitating the control of the overall volume of the head-up display, and at the same time, the cost of the optical element can be reduced.
Description
Technical Field
The present disclosure relates to the field of heads-up display technology, and in particular, to an optical element, a heads-up display system, and a vehicle.
Background
HUD (head up display) is also called head up display device. Through projection of the light that the image source of HUD sent on imaging window (imaging plate of afterloading or the windscreen etc. of vehicle), the user need not the low head just can directly see the picture to can improve user experience. For example, in some cases, distraction caused by a driver looking down at the dashboard during driving can be avoided, so that driving safety factor is improved, and better driving experience can be brought.
Generally, a head-up display system includes a head-up display and a reflective imaging module, where, in order to improve the display effect of the HUD, the image source display module of the HUD generally includes two parts including a dispersing element and a directional control element, which results in complex light paths, larger occupied space, and larger overall volume of the HUD.
Disclosure of Invention
To solve or at least partially solve the above technical problems, the present disclosure provides an optical element, a head-up display system, and a vehicle.
The disclosure provides an optical element, which comprises a base lens, wherein the base lens is a sheet lens, and a direction control unit and a dispersion unit are arranged on the base lens.
Optionally, the direction control unit and the dispersion unit are arranged as an integral structural unit, and the integral structural unit is arranged as a micro lens array and is arranged on at least one side surface of the base lens.
Optionally, the integral structural unit is configured as an array of cylindrical microlenses, each having a deflection angle to the incident light, the deflection angle being determined by the focal length f and the decentering distance d of the cylindrical microlens.
Optionally, the columnar microlens array includes a first lens layer and a second lens layer, the first lens layer is disposed on one side of the base lens, and the second lens layer is disposed on the same side or opposite sides of the base lens.
Optionally, the first lens layer includes a plurality of first lenticular lenses that set up in succession along the first direction, at least part the play plain noodles of first lenticular lenses is eccentric arcwall face, the second lens layer includes a plurality of second lenticular lenses that set up in succession along the second direction, and at least part the play plain noodles of second lenticular lenses is eccentric arcwall face, the second direction with have the contained angle between the first direction.
Optionally, the first direction is perpendicular to the second direction.
Optionally, the integral structural unit is configured as an array of spherical microlenses, each having a deflection angle to an incident light ray, the deflection angle being determined by a focal length f and an decentering distance d of the spherical microlens.
Optionally, the spherical microlens array is disposed on a side surface of the base lens, and the spherical microlens array includes a plurality of spherical microlenses, and at least a portion of the light-emitting surface of the spherical microlenses is an eccentric arc surface.
Optionally, the caliber range of each microlens in the microlens array is greater than or equal to 500nm and less than or equal to 500um, when the microlens is a columnar microlens, the caliber is the width dimension of the columnar lens, when the microlens is a spherical microlens, the caliber comprises the radial dimension of the spherical microlens along a third direction and the radial dimension along a fourth direction, and the third direction is perpendicular to the fourth direction.
Optionally, the light emitting surface of each microlens in the microlens array is a convex surface or a concave surface.
Optionally, the deflection angle ranges from greater than or equal to-30 degrees and less than or equal to +30 degrees.
Optionally, the direction control unit and the dispersion unit are respectively disposed on two opposite sides of the base lens.
Optionally, the dispersing unit is configured to disperse the micro lens array or the sire, and the direction control unit is configured to control the lens array in direction.
The present disclosure also provides a head-up display system, including
The image source is used for emitting image light, the image source comprises a backlight device, a light processing device and a display screen, the light processing device comprises the optical element according to any one of the above, and the optical element is arranged in a light path between the backlight device and the display screen;
and the reflecting device reflects the image light rays to the eye box area to form a virtual image.
Optionally, the backlight device includes a backlight lamp panel, the backlight lamp panel includes mounting substrate, a plurality of backlight lamp and drive plate, the backlight lamp install in mounting substrate, the drive plate with the backlight lamp electricity is connected, the drive plate or mounting substrate is equipped with and walks the line circuit, and a plurality of the backlight lamp respectively with corresponding walk the line circuit to be connected, in order to pass through the drive plate independent control is at least part the luminance of backlight lamp.
The disclosure also provides a vehicle comprising the head-up display system.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
The optical element provided by the embodiment of the disclosure comprises a base lens, wherein the base lens is a sheet lens, and a direction control unit and a dispersion unit are arranged on the base lens. The directional control and dispersion effect of the light path can be realized through one optical element, and the occupied space of the optical element is reduced, so that the whole volume of the head-up display can be conveniently controlled, and meanwhile, the cost of the optical element can be reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of an eccentric lens;
FIG. 2 is a top view of an optical element according to some embodiments of the present disclosure;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a bottom view of an optical element according to some embodiments of the present disclosure;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a top view of an optical element according to further embodiments of the present disclosure;
FIG. 7 is a front view of an optical element according to further embodiments of the present disclosure;
FIG. 8 is a left side view of an optical element according to further embodiments of the present disclosure;
FIG. 9 is a schematic diagram of a head-up display system according to some embodiments of the present disclosure;
FIG. 10 is a schematic diagram of the structure of the optical element with a lenticular lens array according to some embodiments of the present disclosure, wherein the lenticular surface is convex;
FIG. 11 is a schematic diagram of the structure of the optical element with a lenticular lens array according to some embodiments of the present disclosure, wherein the lenticular surface is convex;
FIG. 12 is a schematic diagram of the structure of the optical element with a lenticular lens array according to some embodiments of the present disclosure, wherein the lenticular surface is concave;
FIG. 13 is a schematic diagram of the structure of the optical element with a lenticular lens array according to some embodiments of the present disclosure, wherein the lenticular surface is concave;
fig. 14 is a schematic structural diagram of a head-up display system according to some embodiments of the present disclosure.
1, A base lens; 2, a first columnar lens, 3, a second columnar lens, 4, a spherical micro lens, 10, a transflective film, 20, a windshield, 30, an image source, 40, a virtual image, 100, a backlight device, 200, a collimating lens, 300, a direction control dispersion element, 400, a display screen, 500, a first reflecting mirror, 600, a second reflecting mirror, 700, a reflecting device and 800, an eye box area.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein, and it is apparent that the embodiments in the specification are only some, rather than all, of the embodiments of the present disclosure.
Fig. 1 is a schematic diagram of directional control of an eccentric lens, where D is the aperture of the eccentric lens, D is the eccentric distance, f is the focal length, θ is the eccentric angle, and the deflection angle θ is determined by the focal length f and the eccentric distance D, and the angle θ= artan (D/f). By designing the focal length f and the eccentric distance d, the angle of the outgoing light of the eccentric lens can be controlled. The deflection angle of the eccentric lens to the collimated incident light is between-30 degrees and +30 degrees.
As shown in fig. 2 to 8, the embodiment of the present disclosure provides an optical element including a base lens 1, wherein the base lens 1 is a sheet-shaped lens, and a direction control unit and a dispersion unit are provided on the base lens 1. The direction control unit can control the emitting direction of the light rays, and the dispersing unit can disperse the light rays. The directional control and dispersion effect of the light path can be realized through one optical element, and the occupied space of the optical element is reduced, so that the whole volume of the head-up display can be conveniently controlled, and meanwhile, the cost of the optical element can be reduced.
Further, the direction control unit and the dispersion unit are arranged as an integral structural unit, the integral structural unit is arranged as a micro lens array, and the micro lens array is arranged on at least one side surface of the base lens. The integrated structure unit can not only realize the directional control of incident light, but also realize the dispersion effect. Therefore, the production efficiency of the optical element is convenient to improve, and the production cost of the optical element is reduced.
Further, in some embodiments of the present disclosure, as shown in fig. 10-13, the integral structural unit is provided as a lenticular microlens array including a plurality of lenticular microlenses arranged in an array, each lenticular microlens having a deflection angle to incident light, the deflection angle being determined by a focal length f and an off-center distance d of the lenticular microlens. For example, where the deflection angle θ= artan (d/f). Therefore, by adjusting the focal length f and the eccentric distance d of the columnar micro lens, a proper deflection angle can be obtained, so that the direction of the incident light ray of the optical element is controlled, and a preset deflection angle is generated between the incident light ray and the emergent light ray. Meanwhile, by arranging the columnar micro-lens array, the light dispersion effect can be realized.
For example, as shown in fig. 10 to 11, an eccentric convex cylindrical lens array design is schematically illustrated, and as shown in fig. 12 to 13, an eccentric concave cylindrical lens array design is schematically illustrated.
Further, as shown in fig. 2 to 5, in some embodiments of the present disclosure, the lenticular microlens array includes a first lens layer disposed on one side of the base lens and a second lens layer disposed on the same side or opposite sides of the base lens, and directional control of incident light in different directions is achieved by superposition of the first lens layer and the second lens layer. For example, the first lens layer can control the deflection angle of the optical element in one direction, the second lens layer can control the deflection angle of the optical element in the other direction, for example, the first lens layer can control the first deflection angle of the outgoing light in the horizontal direction, the second lens layer can control the second deflection angle of the outgoing light in the vertical direction, and the deflection angle of the outgoing light can be adjusted in the two-dimensional direction by arranging the first lens layer and the second lens layer, so that the propagation direction of the light in the three-dimensional space is controlled. For example, when the first lens layer and the second lens layer are provided on the same side of the base lens, the first lens layer and the second lens layer may be provided so as to intersect each other, and the structure after intersection of the two may be provided on the surface of the base lens 1. Or for example, when the first lens layer and the second lens layer are respectively provided on opposite sides of the base lens, the first lens layer may be provided on one side surface of the base lens 1 and the second lens layer may be provided on the other side surface of the base lens 1.
Further, in some embodiments of the present disclosure, the first lens layer further includes a plurality of first cylindrical lenses 2 continuously disposed along a first direction, and at least a portion of light-emitting surfaces of the first cylindrical lenses 2 are eccentric arc surfaces, the second lens layer includes a plurality of second cylindrical lenses 3 continuously disposed along a second direction, and at least a portion of light-emitting surfaces of the second cylindrical lenses 3 are eccentric arc surfaces, and an included angle is formed between the second direction and the first direction. For example, the light exit surface of the first cylindrical lens 2 is a convex surface or a concave surface, the decentering angle of the light path in the first direction is controlled by the setting of the decentering angle of the convex surface or the concave surface of the light exit surface of the first cylindrical lens 2, in other words, the deflection angle of the light ray in the first direction is controlled by the focal length f and the decentering distance d of the first cylindrical lens 2, and similarly, the light exit surface of the second cylindrical lens 3 is also a convex surface or a concave surface, the deflection angle of the light path in the second direction is controlled by the setting of the decentering angle of the convex surface or the concave surface of the light exit surface of the second cylindrical lens 3, in other words, the deflection angle of the light ray in the second direction is controlled by the focal length f and the decentering distance d of the second cylindrical lens 3. Because an included angle is formed between the first direction and the second direction, the light path passes through the superposition of the first cylindrical lens 2 and the second cylindrical lens 3, and the direction control on the two-dimensional angle is realized. The light-emitting surfaces of the first cylindrical lenses of the first lens layer may be continuous convex surfaces or continuous concave surfaces, or may have both convex surfaces and concave surfaces, and the outer surfaces of the second cylindrical lenses of the second lens layer may be continuous convex surfaces or continuous concave surfaces, or may have both convex surfaces and concave surfaces, so long as the first lens layer and the second lens layer are superimposed, and a desired light-emitting direction of the optical path may be obtained.
Further, in some embodiments of the present disclosure, the first direction and the second direction are perpendicular. For example, the first direction is the X direction, the second direction is the Y direction, and the first lens layer and the second lens layer realize the eccentric control of the light path in the X direction and the Y direction, so as to realize the direction control of the emergent angle of the light path in the two-dimensional angle.
Further, in some embodiments of the present disclosure, the light-emitting surface of the first lens layer and/or the second lens layer is a micro-transparent surface to form a dispersion unit. The first lens layer and the second lens layer may be disposed on the same side or opposite sides of the base lens 1, and structures of the first lens layer and the second lens layer may overlap together when the first lens layer and the second lens layer are disposed on the same side of the base lens 1. When the first lens layer and the second lens layer are disposed on the same side of the base lens 1, the surface of the lens layer may be formed as a micro-transparent surface by controlling the size of the lenticular lens to achieve a dispersion effect. When the first lens layer and the second lens layer are disposed on opposite sides of the base lens 1, the first lens layer and the second lens layer are disposed on both surfaces of the base lens 1, respectively, and the surfaces of the lens layers can be formed into micro-lens surfaces by controlling the size of the lenticular lens, so as to achieve a dispersion effect.
For example, the materials of the first lens layer and the second lens layer may be selected from PC plastic, glass, or photoresist, and the material of the base lens 1 may be selected from PC plastic, glass, or the like.
For example, each of the first and second cylindrical lenses 2 and 3 may be independently designed with an off-center angle as required, and the off-center angles of the first and second cylindrical lenses 2 and 3 are mainly determined by the focal length f and the off-center distance d of the lenses, and the sizes of each of the first and second cylindrical lenses 2 and 3 may be the same or different.
Further, as shown in fig. 6 to 8, in other embodiments of the present disclosure, the integral structural unit is provided as an array of spherical microlenses, each having a deflection angle to an incident light ray, the deflection angle being determined by a focal length f and an decentration distance d of the spherical microlens. Here, it should be understood that the deflection angle of the spherical microlens to the incident light is in two dimensions, and thus the spherical microlens array may be disposed on one side of the base lens. The spherical micro-lens array comprises a plurality of spherical micro-lenses, and at least part of the light emergent surfaces of the spherical micro-lenses are eccentric spherical surfaces. Thus, the decentering angle of the spherical surface of the light exit surface of the spherical microlens can be controlled by controlling the decentering angle of the optical path in the two-dimensional direction, in other words, the deflection angle of the light in the two-dimensional direction can be controlled by using the focal length f and the decentering distance d of the spherical microlens.
For example, the light emitting surface of each spherical microlens is an eccentric curved surface with a convex or concave middle part, and each spherical microlens is a convex eccentric bulge or an eccentric pit from the appearance, so that each spherical microlens can realize control of the light emitting direction of the light path in multiple angles. The shape of the orthographic projection of the spherical microlenses may be rectangular or circular, and a plurality of spherical microlenses are uniformly distributed on the base lens 1. In this embodiment, as shown in fig. 6, a plurality of spherical microlenses 4 are provided on the same side of the base lens 1, and the spherical microlenses 4 can achieve both directional control and dispersion effects. The shape and the size of the homogenized light spot after the light path is dispersed can be controlled by controlling the sizes of the spherical microlenses 4 in the X direction and the Y direction and the deflection angle of the light, and the emergent direction of emergent light is controlled by controlling the eccentricity of the spherical microlenses 4. That is, the deflection angle is controlled by controlling the focal length f and the decentering distance d of the spherical microlens.
The light exit surface of each spherical microlens 4 may be a convex surface or a concave surface, or may have both a convex surface and a concave surface, as long as a desired light exit direction of the optical path can be obtained.
It will be appreciated herein that the lens designations of "lenticular lens" or "spherical microlens" and the like mentioned above are for convenience of description, and do not impose specific limitations on the structure described in this disclosure.
Further, the aperture range of each microlens in the microlens array is 500nm or more and 500um or less, and when the microlens is a columnar microlens, the aperture of the microlens is the width dimension of the columnar lens, such as shown by Dx in fig. 3 or Dy in fig. 5. When the microlens is a spherical microlens, the aperture of the microlens includes a radial dimension of the spherical microlens in a third direction and a radial dimension of the spherical microlens in a fourth direction, and the third direction and the fourth direction are perpendicular. For example, in the x-direction and y-direction in fig. 6 and 7, the apertures are Dx and Dy, respectively.
Further, the deflection angle ranges from greater than or equal to-30 degrees to less than or equal to 30 degrees. In other words, the optical element deflects the collimated incident light between-30 degrees and +30 degrees. Thus, the deflection angle of the light can be accurately controlled.
In other embodiments of the present disclosure, the dispersion unit and the direction control unit are not integral structures, and the dispersion unit and the direction control unit are separate structural units, respectively. The dispersing unit and the direction control unit may be provided on the same side or opposite sides of the base lens, for example, the direction control unit and the dispersing unit are provided on opposite sides of the base lens 1, respectively.
In some embodiments, the direction control unit is configured as a direction control lens array for controlling the outgoing direction of the light passing through the optical element, and the dispersing unit is configured as a dispersing lens array or a moire pattern for producing a dispersing effect on the light passing through the optical element to form the incident light beam into a shaped light spot.
Further, in other embodiments of the present disclosure, the directional control lens array includes a plurality of fresnel lenses distributed in an array. A fresnel lens is a special optical lens whose surface profile includes annular steps, so that a certain focal length can be achieved with a substantial reduction in the thickness of the lens. This reduction in thickness is very useful in achieving lenses with very large diameters and large diopters. The overall thickness of the optical element is reduced by utilizing the characteristics of the fresnel lens, but the effect of the deflection direction can be achieved by the structural design of the fresnel lens.
Further, in some embodiments of the present disclosure, the dispersing unit includes a moire pattern formed by an etching process provided on the base lens 1, that is, a dispersing effect on the optical path is achieved by providing the moire pattern.
It should be noted that, in the embodiment of the present disclosure, the dispersion of the optical path may be achieved by providing a micro-transparent surface on the surface of the direction control unit or the surface of the base lens 1, or by providing a siren on the base lens 1.
Still further, in some embodiments of the present disclosure, there is provided a head-up display system including a head-up display including an image source for emitting image light, the image source including a backlight device, a light processing device, and a display screen, the light processing device including the above-described optical element, the optical element being disposed in an optical path between the backlight device and the display screen, the head-up display system further including a reflection device that reflects the image light to an eye box area to form a virtual image.
For example, as shown in fig. 14, after the backlight light emitted by the backlight device 100 is collimated by the collimating lens 200, the light enters the direction control dispersion element 300 (optical element), then the light enters the display screen 400 (such as an LCD) to form an image light, then the image light enters the reflecting device 700 (such as a windshield provided with a transflective film) after being processed by an intermediate light path element (such as a folding process of the first mirror 500 and the second mirror 600), and the light reflected by the reflecting device enters the eye box area 800 where the human eye is located to form a virtual image.
In some embodiments, the backlight device includes a backlight panel, the backlight panel includes a mounting substrate, a plurality of backlights and a driving board, the backlights are mounted on the mounting substrate, the driving board is electrically connected with the backlights, the driving board or the mounting substrate is provided with a wiring circuit, and the plurality of backlights are respectively connected with the corresponding wiring circuits so as to independently control the brightness of at least part of the backlights through the driving board.
For example, the head-up display comprises a backlight device and an image generating unit, the backlight device comprises a plurality of backlight lamps, the image generating unit comprises a display panel, the display panel comprises a plurality of display areas, the display areas correspond to the backlight lamps one by one, the control module determines brightness information corresponding to each display area according to an image to be displayed on the display panel, determines target brightness corresponding to each backlight lamp according to the brightness information corresponding to each display area, and controls each backlight lamp based on the target brightness corresponding to each backlight lamp. When the head-up display is displayed, the target brightness corresponding to each backlight is determined according to the image to be displayed, the backlight is controlled according to the target brightness, and the light waste caused by lighting all the backlights is avoided by controlling each backlight independently, so that the power consumption is reduced, and the light utilization rate and the image contrast are improved.
For example, according to the distribution of the display contents in each display area in the image to be displayed, the display area of the display panel may be divided into a dark area and a brightness, the dark area is a display area with lower display brightness (or no display contents), the bright area is a display area with higher display brightness (or display contents exist), the brightness information corresponding to the bright area and the dark area is different, and the target brightness of the backlight determined according to the brightness information is also different, so as to realize the backlight respectively controlling the dark area and the bright area of the image. The brightness of the backlight in the dark area is different from that of the backlight in the brightness, so that the effect of improving the image contrast can be achieved, the contrast of a virtual image formed by the head-up display is improved, and meanwhile, the brightness of the backlight corresponding to the dark area is reduced or the backlight in the dark area is turned off, so that the backlight power consumption is reduced, and the overall power consumption of the display panel is reduced.
For example, according to an image to be displayed by the display panel, a pixel group corresponding to each display area is determined, and the pixel group includes a plurality of pixels. Specifically, the image to be displayed is formed by a plurality of pixels, each pixel displays a color, and a pixel group in the image to be displayed corresponding to each display area, that is, a plurality of pixels in the image to be displayed corresponding to each display area, can be determined according to the distribution situation of the display content in the image to be displayed in each display area. The display panel comprises a plurality of pixel units, each pixel unit corresponds to a group of three primary color filters, and one pixel in an image to be displayed corresponds to one pixel unit on the display panel.
For example, as shown in fig. 9, the head-up display system includes a head-up display and a reflection device, the reflection device is located on the light-emitting side of the image source 30 of the head-up display and configured to reflect the image light emitted from the image source 30 to the eye-box region of the head-up display, so that the user can view the virtual image 40 formed at the imaging position outside the reflection device when both eyes are located in the eye-box region. The reflecting means comprises a windscreen 20 and a transflective film 10.
For example, the head-up display reflects the outgoing light of the image source 30 by the reflection device, so that the observer can observe the virtual image formed outside the reflection device and the object outside the reflection device at the same time in the eye box area. When the head-up display system provided by the embodiment of the disclosure is used for displaying, each backlight can be independently controlled according to an image to be displayed, so that all the backlights are prevented from being turned on, only part of the backlights are turned on, and the light-emitting brightness of each backlight can be independently controlled. By controlling the backlight of different areas corresponding to the image to be displayed, partial backlight lamps are turned off and other backlight lamps are turned on, so that the image contrast ratio can be improved, the contrast ratio of a virtual image imaged by the head-up display is improved, and meanwhile, the power consumption of the head-up display can be reduced by turning off the partial backlight lamps or reducing the brightness of the partial backlight lamps.
For example, the eye box area may be an area where an observer needs to watch the image according to actual requirements, that is, an eye box area (eyebox), where the eyes of the observer are located and the image displayed by the head-up display can be seen, for example, a planar area or a stereoscopic area.
On the basis of the above implementation manner, the embodiment of the present disclosure further provides a vehicle, which includes the head-up display system, and has the corresponding beneficial effects, and in order to avoid repeated description, the description is omitted here.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (16)
1. The optical element is characterized by comprising a base lens (1), wherein the base lens (1) is a sheet lens, and a direction control unit and a dispersion unit are arranged on the base lens (1).
2. An optical element according to claim 1, characterized in that the direction control unit and the dispersing unit are provided as a unitary structural unit provided as a micro lens array and on at least one side of the base lens (1).
3. The optical element according to claim 2, characterized in that the integral structural unit is arranged as an array of cylindrical microlenses, each having a deflection angle for the incident light, the deflection angle being determined by the focal length f and the decentration distance d of the cylindrical microlens.
4. An optical element according to claim 3, characterized in that the lenticular microlens array comprises a first lens layer provided on one side of the base lens (1) and a second lens layer provided on the same side or on the opposite side of the base lens (1).
5. The optical element according to claim 4, wherein the first lens layer comprises a plurality of first cylindrical lenses (2) arranged continuously along a first direction, at least part of the light emitting surfaces of the first cylindrical lenses (2) are eccentric arc surfaces, the second lens layer comprises a plurality of second cylindrical lenses (3) arranged continuously along a second direction, at least part of the light emitting surfaces of the second cylindrical lenses (3) are eccentric arc surfaces, and an included angle is formed between the second direction and the first direction.
6. The optical element of claim 5, wherein the first direction is perpendicular to the second direction.
7. The optical element according to claim 2, characterized in that the integral structural unit is arranged as an array of spherical microlenses, each having a deflection angle for the incident light, the deflection angle being determined by the focal length f and the decentration distance d of the spherical microlens.
8. The optical element according to claim 7, wherein the spherical microlens array is provided on one side surface of the base lens (1), the spherical microlens array including a plurality of spherical microlenses, at least a part of the light-emitting surfaces of the spherical microlenses being eccentric arcuate surfaces.
9. The optical element of claim 2, wherein each of the microlenses in the microlens array has a caliber ranging from greater than or equal to 500nm to less than or equal to 500um, the caliber being a width dimension of the lenticular lens when the microlens is a lenticular microlens, the caliber including a radial dimension of the spherical microlens in a third direction and a radial dimension in a fourth direction when the microlens is a spherical microlens, the third direction being perpendicular to the fourth direction.
10. The optical element of claim 2, wherein the light exit surface of each of the microlenses in the microlens array is convex or concave.
11. An optical element according to claim 3 or 7, characterized in that the deflection angle ranges from greater than or equal to-30 degrees and less than or equal to +30 degrees.
12. An optical element according to claim 1, characterized in that the direction control unit and the dispersing unit are arranged on opposite sides of the base lens (1), respectively.
13. The optical element of claim 11, wherein the dispersing unit is configured as a dispersing microlens array or a moire, and the direction control unit is configured as a direction control lens array.
14. A heads-up display system, comprising:
An image source for emitting image light, the image source comprising a backlight, a light processing device and a display screen, the light processing device comprising an optical element according to any one of claims 1-13, the optical element being arranged in an optical path between the backlight and the display screen;
and the reflecting device reflects the image light rays to the eye box area to form a virtual image.
15. The head-up display system of claim 14, wherein the backlight device comprises a backlight panel, the backlight panel comprises a mounting substrate, a plurality of backlights and a driving board, the backlights are mounted on the mounting substrate, the driving board is electrically connected with the backlights, the driving board or the mounting substrate is provided with a wiring circuit, and the plurality of backlights are respectively connected with the corresponding wiring circuits so as to independently control the brightness of at least part of the backlights through the driving board.
16. A vehicle comprising the heads-up display system of claim 14 or 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311118872.3A CN119556469A (en) | 2023-08-31 | 2023-08-31 | Optical element, head-up display system and vehicle |
| PCT/CN2024/115463 WO2025045140A1 (en) | 2023-08-31 | 2024-08-29 | Optical element, head-up display system, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311118872.3A CN119556469A (en) | 2023-08-31 | 2023-08-31 | Optical element, head-up display system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119556469A true CN119556469A (en) | 2025-03-04 |
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ID=94738852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311118872.3A Pending CN119556469A (en) | 2023-08-31 | 2023-08-31 | Optical element, head-up display system and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN119556469A (en) |
| WO (1) | WO2025045140A1 (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3035110A1 (en) * | 2014-12-18 | 2016-06-22 | Optotune AG | Optical system for avoiding speckle patterns |
| WO2017183556A1 (en) * | 2016-04-20 | 2017-10-26 | 日本精機株式会社 | Head-up display device |
| JP2021015132A (en) * | 2017-10-31 | 2021-02-12 | 富士フイルム株式会社 | Head-up display device |
| CN108732823B (en) * | 2018-08-03 | 2023-08-08 | 广东烨嘉光电科技股份有限公司 | Backlight system of head-up display device |
| CN111948812A (en) * | 2019-05-17 | 2020-11-17 | 未来（北京）黑科技有限公司 | A head-up display system |
| CN111948813A (en) * | 2019-05-17 | 2020-11-17 | 未来（北京）黑科技有限公司 | Head-up display system |
| JP2021135472A (en) * | 2020-02-28 | 2021-09-13 | 株式会社リコー | Display device and movable body |
| CN114879290B (en) * | 2022-05-13 | 2024-09-10 | 宁波舜宇奥来技术有限公司 | Diffusion sheet and head-up display device |
| CN115097672A (en) * | 2022-07-25 | 2022-09-23 | 业成科技（成都）有限公司 | Backlight module, image generation unit, head-up display and vehicle |
| DE102022210445A1 (en) * | 2022-09-30 | 2024-04-04 | Continental Automotive Technologies GmbH | Display device with diffuser |
| CN221175130U (en) * | 2023-08-31 | 2024-06-18 | 未来（北京）黑科技有限公司 | Optical element, head-up display system and vehicle |
| CN117930512A (en) * | 2024-03-08 | 2024-04-26 | 未来（北京）黑科技有限公司 | Direction control device, image source, head-up display device and vehicle |
| CN118068577A (en) * | 2024-04-03 | 2024-05-24 | 未来（北京）黑科技有限公司 | Direction control assembly, backlight source, image source, head-up display device and vehicle |
-
2023
- 2023-08-31 CN CN202311118872.3A patent/CN119556469A/en active Pending
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2024
- 2024-08-29 WO PCT/CN2024/115463 patent/WO2025045140A1/en unknown
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| WO2025045140A1 (en) | 2025-03-06 |
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