CN107632404A - Air suspension display system - Google Patents
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- CN107632404A CN107632404A CN201710954416.0A CN201710954416A CN107632404A CN 107632404 A CN107632404 A CN 107632404A CN 201710954416 A CN201710954416 A CN 201710954416A CN 107632404 A CN107632404 A CN 107632404A
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- 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
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
- G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
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Abstract
The embodiments of the invention provide a kind of air suspension display system, the system includes display source and optics module；Wherein, the optics module includes at least three lens, light incidence end of the light through the optics module of the display source transmitting enters the optics module, pass through at least three lens successively, enter human eye after the beam projecting end of the optics module is converged in the air again, form suspension picture in the air.The light launched by the optics module including at least three lens display source enters human eye after being modulated, so as to observe suspension picture in the air, the air suspension display system can realize that big visual angle, large scale, the distortionless air suspension of fine definition are shown.
Description
Technical Field
The embodiment of the invention relates to the technical field of optical display, in particular to an air suspension display system.
Background
From black and white displays to color displays; from a CRT display to a quantum dot display; from flat displays to naked eye 3D displays. New display technologies have been continuously studied for a long time and successfully applied to various fields such as life entertainment, exhibition and display, advertisement media, medical education, military command, and the like. Among the numerous display technologies, the floating-in-the-air display technology has received attention from many researchers due to the ability to present images in the air, resulting in a strong visual impact and a truly false sensory experience for the viewer. The categories of images from hover are mainly divided into three-dimensional aerial imaging of real objects and planar aerial imaging of virtual objects. The former is mainly to place real objects in a floating display system, and by illuminating the real objects, it is achieved that an observer can see the real objects floating in the air through the display system. The latter mainly realizes the floating plane content after the virtual image displayed by the plane display such as LCD passes through the display system. The essence of floating display systems is that they are optical systems capable of imaging in real time, which can be classified into five categories according to previous work reports of researchers:
concave mirror + spectroscope: this optical structure is the earliest proposed solution for such display systems. The illuminated real object or the content displayed by the LCD is reflected by the beam splitter into the concave reflector, and the light passes through the beam splitter again under the convergence action of the concave reflector and then is imaged on the other side of the beam splitter. At this time, the observer can see the image floating in the air. In order to avoid the influence of ambient light on the visual perception, a circular polarizer may be added to the system to suppress the influence of ambient stray light. The spherical reflector has the advantages of simple structure and greatly reduced cost after the spherical reflector made of resin materials is applied. The disadvantages are that: the suspended image has a small size, a small viewing angle and a severe image deformation.
A coaxial structure; in order to solve the problems in the solution 1, researchers have proposed a coaxial reflection structure, which mainly comprises an upper and a lower two opposite axial reflectors, and a clear aperture with a certain size is opened in the center of the upper reflector. The real object is placed in the two reflectors, and light rays emitted by the object are reflected by the upper reflector and the lower reflector and then emitted out from the light-transmitting aperture of the upper reflector, so that imaging is carried out in the air. The advantages are that: the observer can look around the object image suspended in the air within the range of 360 degrees; simple structure easily assembles. The disadvantages are as follows: because the upper part is provided with the light-passing small hole, an observer cannot watch the glasses within a certain angle range above the small hole; it is only suitable for displaying small-sized images, and if large-sized images are displayed, the size of the display system can be very large, thereby increasing the cost and reducing the practicability.
Off-axis reflective structure: in order to further improve the effect, researchers have proposed off-axis reflecting structures. The content of the display source is imaged in the air after being reflected for a plurality of times by a reflector which is off-axis and rotates a certain angle. The advantages are that: the problem that the coaxial structure cannot be observed above is solved through the off-axis of the reflector; the viewing angle is large, and the display definition is high. The disadvantages are as follows: because of the off-axis mode, the surface type of the reflector is necessarily the aspheric surface type, thereby eliminating the eccentric aberration caused by the off-axis, which increases the process difficulty and the cost; the mutual distance and respective rotation angle of the reflectors bring great difficulty to assembly; it is not desirable to display a large size floating image.
Retroreflective structure + beam splitter: to enable larger size suspended images, researchers have proposed skyweight display systems based on retroreflective structures and beam splitters. The structure mainly comprises a hollow or solid spherical lens and a reflecting film is plated on the surface of the lower hemisphere. The structure can realize the effect that the reflected light and the incident light are parallel to each other and have opposite directions. Light emitted by the display source is incident on the retro-reflective structure through the beam splitter, and reflected light passing through the retro-reflective structure passes through the beam splitter again in the opposite direction of the incident light to be focused and imaged on the other side of the beam splitter. The advantages are that: the suspension display image with larger size can be realized; the processing technology is mature and the cost is low; the viewing angle is large. The disadvantages are that; the suspension image is very blurred due to the serious aberration of the spherical lens, and the display effect of the suspension image is greatly influenced.
Double-layer plane mirror array: the scheme is that the plane mirror array consists of an upper layer of plane mirror array and a lower layer of plane mirror array, and plane mirror units between the two layers are mutually vertical. Light rays emitted by the display source are reflected by the plane mirror array and then are converged and imaged on the other side. The advantages are that: because of the planar mirror reflection imaging, the system has no aberration, and can realize a suspension image with no distortion and high definition. The disadvantages are as follows: theoretically, each light ray of the display source should be converged and imaged after being reflected once on the upper and lower flat mirror arrays respectively. In practice, multiple reflections may occur before two more layers of reflectors, which results in that the viewer can see the floating image and also can see the ghost at the same time; the spacing of the mirror units determines the low display frequency and resolution of the system; the effective viewing angle is small; the utilization rate of light energy is low; the manufacturing cost is extremely high.
In summary, the existing aerial suspension display system has the problems of small observation visual angle, small imaging size, unclear aerial suspension display image and the like.
Disclosure of Invention
Embodiments of the present invention provide an airborne display system that overcomes, or at least partially solves, the above problems.
The embodiment of the invention provides 1 an air suspension display system, which is characterized by comprising a display source and an optical module; wherein,
the optical module comprises at least three lenses, and light emitted by the display source enters the optical module through the light incident end of the optical module, sequentially passes through the at least three lenses, is converged through the light emergent end of the optical module and then enters human eyes to form a suspended image in the air.
Further, each lens in the optical module is a conventional lens or a fresnel lens.
Furthermore, the distance between the centers of the adjacent lenses in the optical module is d, and d is more than or equal to 500mm and more than or equal to 0 mm; the thickness of each lens in the optical module is l, and l is more than or equal to 500mm and is more than 0 mm; the diameter of the circumscribed circle of each lens in the optical module is D, and D is more than or equal to 5000mm and more than 0 mm.
Optionally, the system further includes a protection plate disposed between the light exit end of the optical module and an imaging position of the system.
Optionally, the optical axes of the lenses in the optical module are on the same straight line, the light emitting surface of the display source is opposite to the light incident end of the optical module, and the distance between the light emitting surface of the display source and the lens center of the light incident end of the optical module is 0-5000 mm.
Optionally, the system further comprises a reflective element;
the reflecting element is arranged between the display source and the light incident end of the optical module, between any two lenses in the optical module or between the light emergent end of the optical module and the imaging position of the system.
Wherein the rotation angle of the reflection element is theta0And 90 is°＞θ0＞0°。
Optionally, the reflective element is disposed between the display source and the light incident end of the optical module; wherein,
the optical axes of all lenses in the optical module are on the same straight line, the light-emitting surface of the display source is parallel to the optical axes of all lenses in the optical module, and light rays emitted by the display source enter the optical module after being reflected by the reflecting element;
the distance between the light emitting surface of the display source and the center of the reflecting element is 0-5000mm, and the distance between the center of the lens at the optical incidence end of the optical module and the center of the reflecting element is 0-5000 mm.
Optionally, the reflective element is disposed between any two lenses in the optical module, and the optical module is divided into a first optical subunit and a second optical subunit by the reflective element; wherein,
the first optical subunit is close to a light incidence end of the optical module, optical axes of all lenses in the first optical subunit are on the same straight line, and the optical axes of all lenses in the first optical subunit are perpendicular to a light emitting surface of the display source;
the second optical subunit is close to the light ray emergent end of the optical module, and the optical axes of all lenses in the second optical subunit are on the same straight line;
the light rays emitted by the display source enter the second optical subunit after passing through the first optical subunit and being reflected by the reflecting element;
the distance between the center of the last lens in the first optical subunit in the light propagation direction and the center of the reflecting element is 0-5000mm, and the distance between the center of the first lens in the second optical subunit in the light propagation direction and the center of the reflecting element is 0-5000 mm.
Optionally, the reflecting element is disposed between the light exit end of the optical module and the imaging position of the system; wherein,
the optical axes of all the lenses in the optical module are on the same straight line, the light emitting surface of the display source is perpendicular to the optical axes of all the lenses in the optical module, and light rays emitted by the display source pass through the optical module and then are reflected by the reflecting element to converge in the air and then enter human eyes, so that an aerial suspended image is formed;
the distance between the center of the lens at the light ray outgoing end of the optical module and the center of the reflecting element is 0-5000mm, and the distance between the center of the reflecting element and the center of the system imaged in the air is 0-5000 mm.
The embodiment of the invention provides an aerial suspension display system, which can realize large-view-angle, large-size and high-definition distortion-free aerial suspension display by modulating light rays emitted by a display source through an optical module comprising at least three lenses and then forming images in an aerial suspension mode.
Drawings
Fig. 1 is a structural diagram of an air suspension display system according to an embodiment of the present invention;
FIG. 2 is a diagram of a conventional lens shape in an embodiment of the present invention;
FIG. 3 illustrates the shape of a Fresnel lens according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative embodiment of an airborne display system according to the present invention;
FIG. 5 is a schematic diagram of an embodiment of an aerial suspension display system;
fig. 6 is a structural diagram of another floating display system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention relates to the following technical terms:
the traditional lens refers to a spherical or aspherical lens, and the material can be various kinds of glass or plastics;
the Fresnel lens is a plane lens with threads and equivalent functions to the traditional lens, and the threads of the Fresnel lens can be concentric circles or linear threads;
the aberration is a deviation from an ideal state of gaussian optics (first order approximation theory or paraxial ray) in which a result of non-paraxial ray tracing and a result of paraxial ray tracing do not match in an actual optical system. One of the aberrations is distortion, which refers to distortion deformation of an image;
a spectroscope, which is a flat mirror capable of dividing a beam of light into transmitted light and reflected light, is generally formed by coating optical glass.
In order to achieve a better floating display effect, the embodiment of the invention provides a floating display system based on an optical module or an optical module and an element with a reflection function. The optical lens in the optical module may be a conventional lens, a fresnel lens, or a combination of both. Light rays emitted by the display source are modulated by the optical module, converged at the other side and enter human eyes, and accordingly a suspended image is formed in the air. The air suspension display system can realize large-view-angle, large-size and high-definition distortion-free air suspension display. Specifically proposed are: if the optical module is made of plastic materials, the production cost of the air suspension display system is greatly reduced, and the application potential of the invention in various fields is further ensured.
Fig. 1 is a schematic structural diagram of an air suspension display system according to an embodiment of the present invention, as shown in fig. 1, the system includes a display source and an optical module; wherein,
the optical module comprises at least three lenses, and light emitted by the display source enters the optical module through the light incident end of the optical module, sequentially passes through the at least three lenses, is converged through the light emergent end of the optical module and then enters human eyes to form a suspended image in the air.
Wherein, the display source M1Is an illuminated physical object or an electronic device that is capable of providing visual content information to a viewer. It may be a Liquid Crystal Display (LCD), laser display, projector, LED display, OLED display, quantum dot display, or other device and system capable of displaying visual content. It is used to display static, dynamic, and any content that can be displayed or viewed. Static content refers to content that is displayed without changing over time, and includes, but is not limited to, pictures, still images, still text, and graphical data. Dynamic content refers to content that changes over time and includes, but is not limited to, recorded video, real-time video, changing images, dynamic text and graphical data, and the like.
Optical module M2Composed of lenses 1 to N shown in FIG. 1, NRepresents the total number of lenses, and N is more than or equal to 3. Various optical films (such as antireflection films) can be plated on the optical lens according to actual needs. The optical module is used for modulating (refracting or reflecting) light rays emitted by the display source, so that emergent light rays can be converged in the air according to a certain rule and then enter human eyes, and the purpose of observing a suspended image in the air is achieved.
System in-air floating image M3Representing a still image or a moving video suspended in air, the viewer can see the image truly or the video floats in the air and can manually pass through the suspended image.
The embodiment of the invention provides an aerial suspension display system, which modulates light rays emitted by a display source through an optical module comprising at least three lenses, and then converges in the air to enter human eyes, so that a viewer can observe a suspended image in the air.
Based on the above embodiments, each lens in the optical module is a conventional lens or a fresnel lens.
In particular, the optical lenses in the optical module in the floating display system may be conventional glass lenses, plastic lenses or fresnel lenses or any combination thereof.
As shown in fig. 2, each optical lens in the optical module in the floating display system in the above embodiment may be any one of the structures in fig. 2 or a composite structure glued together between them. For example, the plano-convex lens and the biconcave lens in fig. 2 may be combined into a double cemented lens or a triple cemented structure with a double convex lens. R is the curvature radius of the optical lens, and the value range of the absolute value is as follows: r is more than 0. l is the central thickness of the optical lens, and the value range is as follows: l is more than 0mm and is more than or equal to 500 mm. lEThe thickness of the edge of the optical lens is as follows: 500mm is more than or equal to lEThe shape of the optical lens with the diameter larger than 0mm can be rectangular, circular or squareAnd the shape, the hexagon and other arbitrary shapes, therefore, D refers to the size of the diameter of the circumcircle of each optical lens, and the selection range is as follows: d is more than 0mm and is more than or equal to 5000 mm. The material used for each optical lens can be various glass materials (such as crown glass, flint glass, dense crown glass, heavy flint glass or LA series glass); can be plastic resin material (such as PMMA, PC, COC, POLYCARB, etc.); various optical films (such as antireflection films) can be plated on the optical lens according to actual needs. It should be noted that fig. 2 only illustrates that several forms of the conventional lens are possible, and does not limit the scope and rights of the patent. The optical lens shown in fig. 2 is in the form of a conventional lens, and likewise the optical lens may be in the form of a fresnel lens.
As shown in fig. 3, each optical lens in the optical module may be any one of the structures in fig. 3 or a composite structure glued together. The optical power of each optical lens can take positive power, negative power or zero power as the case may be. The thickness range of the Fresnel lens is as follows: d is more than 0mm and is more than or equal to 500 mm. The shape of the fresnel lens can be any shape such as rectangle, circle, square, hexagon, etc., so D refers to the size of the diameter of the circumcircle of each fresnel lens, and the selection range is: d is more than 0mm and is more than or equal to 5000 mm. The range of the ring distance of the Fresnel lens is 0.01 mm-100 mm. Various optical films (such as antireflection films) can be plated on the Fresnel lens according to actual needs. It should be noted that fig. 3 only illustrates some fresnel lenses, and does not limit the structure of the fresnel lenses. In fact, the depth of each tooth, the inclination angle and the draft angle of each tooth of the fresnel lens can be adjusted according to the actual production process and requirements under the condition of ensuring that the optical power is unchanged. Each tooth of the fresnel lens can be a straight triangular sawtooth or an arc line type equivalent to the corresponding tooth. All of which are intended to be covered by this patent.
Fig. 2-3 illustrate the optical lens in the optical module as a conventional lens and a fresnel lens, respectively, and it should be noted that these are only two specific embodiments and do not limit the scope and rights of the patent. In practice, the optical module may be a combination of the two (i.e., a combination of a conventional lens and a fresnel lens).
Based on the embodiment, the distance between the centers of the adjacent lenses in the optical module is d, and d is more than or equal to 500mm and more than or equal to 0 mm; the thickness of each lens in the optical module is l, and l is more than or equal to 500mm and is more than 0 mm; the diameter of the circumscribed circle of each lens in the optical module is D, and D is more than or equal to 5000mm and more than 0 mm.
Based on the above embodiment, as shown in fig. 1, the system further includes a protection plate disposed between the light exit end of the optical module and the imaging position of the system.
In particular, the protection plate may be a flat plate or a plate with a certain curvature. It may be any color, such as black, white, green, etc. The material can be glass, acrylic and other materials capable of transmitting light, the light transmittance range is 1-99%, and the reflectivity is 1-99% (it needs to be stated that the control of the light transmittance can be realized by adding some components in the materials or coating films or pasting films on the surfaces of the materials, and the like). Its thickness can be chosen according to the actual needs. Its dimensional specification may be greater than, equal to, or less than the size of the lenses in the optical module. The shape of the device can be any shape such as square, rectangle, hexagon, circle and the like.
Based on the above embodiment, as shown in fig. 1, the optical axes of the lenses in the optical module are on the same straight line, the light emitting surface of the display source is opposite to the light incident end of the optical module, and the distance between the light emitting surface of the display source and the lens center of the light incident end of the optical module is 0-5000 mm.
In particular, by the display source M1The emitted light enters the optical module, and after modulation (reflection and refraction) of the optical module, the light can be converged again in the air according to a certain rule and then enters human eyes, so that a suspended image can be observed in the air. The shape of the optical lens can be any shape such as rectangle, circle, square, hexagon, etc., each lightThe sizes of the optical lenses may be the same or different. Various optical films (such as antireflection films) can be plated on the optical lens according to actual needs. θ is the viewing angle, and the variation range is: 180 DEG or more theta is more than 0 DEG (the view angle of the circle can be 360 DEG), the size of the suspension image and the display source M1The ratio of the upper display image sizes ranges from 0.1:1 to 10: 1. The display system shown in fig. 1 is only one of the structural forms of the display system, and is not intended to limit the protection scope of the display system, and one or more elements with a reflection function may be added at any position between the display source and the floating image, and the effect of the floating display can be achieved. In order to eliminate the influence of ambient light and glare, a polarizer (linear polarizer or circular polarizer), a quarter-wave retarder, or the like may be added to the optical path.
Based on the above embodiment, the system further comprises a reflective element;
the reflecting element is arranged between the display source and the light incident end of the optical module, between any two lenses in the optical module or between the light emergent end of the optical module and the imaging position of the system.
Wherein the rotation angle of the reflection element is theta0And 90 DEG > theta0＞0°。
Specifically, the light path of the system can be more variable by adding the reflecting element, the structure adjustment is more flexible, and the system is more suitable for market popularization.
Based on the above embodiment, as shown in fig. 4, the reflective element is disposed between the display source and the light incident end of the optical module; wherein,
the optical axes of all lenses in the optical module are on the same straight line, the light-emitting surface of the display source is parallel to the optical axes of all lenses in the optical module, and light rays emitted by the display source enter the optical module after being reflected by the reflecting element; the distance between the light emitting surface of the display source and the center of the reflecting element is 0-5000mm, and the distance between the center of the lens at the incident end of the optical module and the center of the reflecting element is 0-5000 mm.
Wherein the reflecting element is a plane mirror with reflecting ability, such as a glass mirror, a resin mirror, a smooth metal surface, etc. The size variation range is as follows: 10 mm-5000 mm. The range of variation of the reflectance is: 01 to 99 percent. The thickness can be selected according to actual needs (preferably: 0.1mm to 100 mm).
In particular, LIThe distance between the center of the image suspended in the air and the center of the last optical lens in the optical module is 5000mm ≥ LINot less than 0mm, theta is the viewing angle, and the variation range is as follows: 180 DEG or more theta is more than 0 DEG (the view angle of the ring view can be 360 degrees). Size of floating image and display source M1The ratio of the upper display image sizes ranges from 0.1:1 to 10: 1.
It is stated that: in FIG. 4, an element E with a reflection function is added between the display source and the optical module, the number of the reflection elements E can be one or more, and the number of the optical lenses in the optical module satisfies N ≧ 3. Fig. 4 is only an example, and does not limit the scope and right of the present patent, and a polarizer (linear polarizer or circular polarizer), a quarter-wave retarder, etc. may be added to the optical path to eliminate the influence of ambient light and glare.
Based on the above embodiment, as shown in fig. 5, the reflective element is disposed between any two lenses in the optical module, and the optical module is divided into a first optical subunit and a second optical subunit by the reflective element; wherein,
the first optical subunit is close to a light incidence end of the optical module, optical axes of all lenses in the first optical subunit are on the same straight line, and the optical axes of all lenses in the first optical subunit are perpendicular to a light emitting surface of the display source; the second optical subunit is close to the light ray emergent end of the optical module, and the optical axes of all lenses in the second optical subunit are on the same straight line; the light rays emitted by the display source enter the second optical subunit after passing through the first optical subunit and being reflected by the reflecting element; the distance between the center of the last lens in the first optical subunit in the light propagation direction and the center of the reflecting element is 0-5000mm, and the distance between the center of the first lens in the second optical subunit in the light propagation direction and the center of the reflecting element is 0-5000 mm.
Based on the above embodiment, as shown in fig. 6, the reflective element is disposed between the light exit end of the optical module and the imaging position of the system; wherein,
the optical axes of all the lenses in the optical module are on the same straight line, the light emitting surface of the display source is perpendicular to the optical axes of all the lenses in the optical module, and light rays emitted by the display source pass through the optical module and then are reflected by the reflecting element to converge in the air and then enter human eyes, so that a suspended image is formed in the air;
the distance between the center of the lens at the light ray outgoing end of the optical module and the center of the reflecting element is 0-5000mm, and the distance between the center of the reflecting element and the center of the system imaged in the air is 0-5000 mm.
Based on the above embodiments, the surface shape of each lens in the optical module is obtained by using optical design software or algorithm according to actual conditions.
Specifically, taking a lens structure as an example, when the surface type of each lens is optimally designed, the distance between a display source and a reflector or an optical module needs to be determined; the distance between the suspended image and the reflector E or the optical module, the size and the viewing angle of the suspended image and the number of lenses in the optical module are determined.
The above are all target values to be optimized by the whole system, and to reach the target values, the optimization algorithm needs to be used for continuous iterative calculation after the optimization variables are selected, and finally, the values of the optimization variables and the specific surface type parameters meeting the target values are obtained. The optimization variables of the system are as follows: the thickness of each optical lens, the distance between adjacent optical lenses, the material selected for the optical lenses, and the surface type formula (including the variables of the formula: curvature, aspheric surface coefficient, etc.) (either the existing spherical or aspheric surface type formula or the user-defined surface type formula) followed by each optical lens.
As shown in table 1, the parameters of one of the optical lenses calculated according to the above method.
TABLE 1
The surface type formula followed by the optical elements in table 1 is as follows:
where Z is the sagittal height of the lens, c is the curvature, r is the radial aperture, k is the conic coefficient, a1～a5Is an aspherical coefficient.
The above embodiment is only one of the possibilities, and in fact, the change of the system optimization target value, the change of the selection of the optimization variables, the change of the optimization sequence, the selection of the surface formula (the selection of the internal variables) and the selection of the optimization algorithm can all obtain different variable values and surface parameters, so that a plurality of surface parameters meeting the requirements can be obtained. Or may be converted to a fresnel lens equivalent to the computational surface type. It is within the scope of the present patent that various surface parameters may be obtained by modifications within the scope of the present patent by referring to the above-described embodiments without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An air suspension display system is characterized by comprising a display source and an optical module; wherein,
the optical module comprises at least three lenses, and light emitted by the display source enters the optical module through the light incident end of the optical module, sequentially passes through the at least three lenses, is converged through the light emergent end of the optical module and then enters human eyes to form a suspended image in the air.
2. The system of claim 1, wherein each lens in the optical module is a conventional lens or a fresnel lens.
3. The system of claim 2, wherein the distance between the centers of adjacent lenses in the optical module is d, and d is greater than or equal to 500mm and greater than or equal to 0 mm; the thickness of each lens in the optical module is l, and l is more than or equal to 500mm and is more than 0 mm; the diameter of the circumscribed circle of each lens in the optical module is D, and D is more than or equal to 5000mm and more than 0 mm.
4. The system of claim 3, further comprising a protective plate disposed between the light exit end of the optical module and an imaging location of the system.
5. The system of claim 3, wherein the optical axes of the lenses of the optical module are collinear, the light emitting surface of the display source is disposed opposite to the light incident end of the optical module, and the distance between the light emitting surface of the display source and the lens center of the light incident end of the optical module is 0-5000 mm.
6. The system of claim 3, further comprising a reflective element;
the reflecting element is arranged between the display source and the light incident end of the optical module, between any two lenses in the optical module or between the light emergent end of the optical module and the imaging position of the system.
7. The system of claim 6, wherein the reflective element has an angle of rotation θ0And 90 DEG > theta0＞0°。
8. The system of claim 7, wherein the reflective element is disposed between the display source and the light incident end of the optical module; wherein,
the optical axes of all lenses in the optical module are on the same straight line, the light-emitting surface of the display source is parallel to the optical axes of all lenses in the optical module, and light rays emitted by the display source enter the optical module after being reflected by the reflecting element;
the distance between the light emitting surface of the display source and the center of the reflecting element is 0-5000mm, and the distance between the center of the lens at the optical incidence end of the optical module and the center of the reflecting element is 0-5000 mm.
9. The system of claim 7, wherein the reflective element is disposed between any two lenses in the optical block, the optical block being divided into a first optical subunit and a second optical subunit by the reflective element; wherein,
the first optical subunit is close to a light incidence end of the optical module, optical axes of all lenses in the first optical subunit are on the same straight line, and the optical axes of all lenses in the first optical subunit are perpendicular to a light emitting surface of the display source;
the second optical subunit is close to the light ray emergent end of the optical module, and the optical axes of all lenses in the second optical subunit are on the same straight line;
the light rays emitted by the display source enter the second optical subunit after passing through the first optical subunit and being reflected by the reflecting element;
the distance between the center of the last lens in the first optical subunit in the light propagation direction and the center of the reflecting element is 0-5000mm, and the distance between the center of the first lens in the second optical subunit in the light propagation direction and the center of the reflecting element is 0-5000 mm.
10. The system of claim 7, wherein the reflective element is disposed between the light exit end of the optical module and an imaging location of the system; wherein,
the optical axes of all the lenses in the optical module are on the same straight line, the light emitting surface of the display source is perpendicular to the optical axes of all the lenses in the optical module, and light rays emitted by the display source pass through the optical module and then are reflected by the reflecting element to converge in the air and then enter human eyes, so that an aerial suspended image is formed;
the distance between the center of the lens at the light ray outgoing end of the optical module and the center of the reflecting element is 0-5000mm, and the distance between the center of the reflecting element and the center of the system imaged in the air is 0-5000 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954416.0A CN107632404A (en) | 2017-10-13 | 2017-10-13 | Air suspension display system |
| PCT/CN2018/102074 WO2019072032A1 (en) | 2017-10-13 | 2018-08-24 | Air suspension display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954416.0A CN107632404A (en) | 2017-10-13 | 2017-10-13 | Air suspension display system |
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| CN107632404A true CN107632404A (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710954416.0A Pending CN107632404A (en) | 2017-10-13 | 2017-10-13 | Air suspension display system |
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| Country | Link |
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| CN (1) | CN107632404A (en) |
| WO (1) | WO2019072032A1 (en) |
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| CN108269511A (en) * | 2018-02-28 | 2018-07-10 | 北京眸合科技有限公司 | A kind of air suspension display system |
| CN108563074A (en) * | 2018-06-04 | 2018-09-21 | 东莞广辰光电科技有限公司 | A kind of slim back lighting of liquid crystal display system of tool directionality |
| CN108761819A (en) * | 2018-08-16 | 2018-11-06 | 深圳市眸合科技有限公司 | A kind of full parallax auto-stereo display system |
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| WO2019072032A1 (en) * | 2017-10-13 | 2019-04-18 | 北京眸合科技有限公司 | Air suspension display system |
| CN112201185A (en) * | 2020-11-18 | 2021-01-08 | 深圳市传呈科技有限公司 | Medium-free aerial imaging |
| WO2022028438A1 (en) * | 2020-08-03 | 2022-02-10 | 深圳光峰科技股份有限公司 | Fresnel combined optical device and three-dimensional display apparatus |
| WO2023097814A1 (en) * | 2021-11-30 | 2023-06-08 | 歌尔光学科技有限公司 | Optical system and head-mounted display device |
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| WO2019072032A1 (en) | 2019-04-18 |
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