CN112946914A - Transmission type geometric holographic screen with field angle and application thereof - Google Patents
Transmission type geometric holographic screen with field angle and application thereof Download PDFInfo
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- CN112946914A CN112946914A CN202110200554.6A CN202110200554A CN112946914A CN 112946914 A CN112946914 A CN 112946914A CN 202110200554 A CN202110200554 A CN 202110200554A CN 112946914 A CN112946914 A CN 112946914A
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- 230000003287 optical effect Effects 0.000 claims abstract description 31
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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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- 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
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
Abstract
The invention relates to the technical field of optical display, and discloses a transmission-type geometric holographic screen with an opening angle, which comprises a transmission-type geometric holographic screen, wherein at least one group of opening angle mirror groups is arranged around the edge of the transmission-type geometric holographic screen, and the opening angle mirror groups are used for reflecting part of light rays exceeding the edge of the transmission-type geometric holographic screen onto the transmission-type geometric holographic screen and participate in imaging through optical transformation of the transmission-type geometric holographic screen; each group of field angle lens group consists of a pair of field angle lenses arranged at an angle theta, wherein the angle between one field angle lens and the incident surface of the transmission type geometric holographic screen is alpha, and the included angle between the other field angle lens and the emergent surface of the transmission type geometric holographic screen is beta, so that the requirements are met: alpha is more than or equal to 90 degrees and less than or equal to 160 degrees, and beta is more than or equal to 90 degrees and less than or equal to 160 degrees. The invention can realize the obvious enlargement of the display window with relatively low cost, and simultaneously can increase the mechanical strength of the transmission type geometric holographic screen and improve the stability.
Description
Technical Field
The invention relates to the technical field of optical display, in particular to a transmission type geometric holographic screen with an opening angle and application thereof.
Background
The transmission type geometric holographic screen is a new type of plate optical lens element, which is a special lens formed by combining two groups of mutually perpendicular mirror arrays. This structure makes the light emitted from the object point on one side of the lens can be imaged near the symmetrical position of the object point relative to the lens after optical transformation (reflection) of the two groups of mirrors. The imaging mode is very similar to that of the common mirror imaging, and the imaging is carried out at the symmetrical position relative to the mirror, except that the image formed by the transmission type geometric holographic screen is a real image, and the common plane mirror can only form a virtual image.
Thus, a very ideal geometric holographic display effect can be achieved with it. However, the novel flat lens requires large-scale preparation of very precise microstructures in the production process, so the processing cost is extremely high. Therefore, in practical applications, in order to save cost, the display window is often made very small, and cannot meet the application of large-area display.
Disclosure of Invention
Aiming at the limitation of high processing cost of the existing transmission type geometric holographic screen on the display window of the display equipment, the transmission type geometric holographic screen with the opening angle and the application thereof are provided, the display window can be remarkably increased with relatively low cost, and meanwhile, the mechanical strength of the transmission type geometric holographic screen can be increased, and the stability is improved.
In order to solve the technical problem, the invention provides a transmission-type geometric holographic screen with an opening angle, which comprises a transmission-type geometric holographic screen, wherein at least one group of opening angle mirror groups is arranged along the periphery of the transmission-type geometric holographic screen, and the opening angle mirror groups are used for reflecting part of light rays exceeding the periphery of the transmission-type geometric holographic screen onto the transmission-type geometric holographic screen and participate in imaging through optical transformation of the transmission-type geometric holographic screen;
each group of field angle lens group consists of a pair of field angle lenses arranged at an angle theta, wherein the angle between one field angle lens and the incident surface of the transmission type geometric holographic screen is alpha, and the included angle between the other field angle lens and the emergent surface of the transmission type geometric holographic screen is beta, so that the requirements are met: alpha is more than or equal to 90 degrees and less than or equal to 160 degrees, beta is more than or equal to 90 degrees and less than or equal to 160 degrees, alpha-beta is less than or equal to 5 degrees, and alpha-beta represents the absolute value of alpha-beta.
Furthermore, the perimeter of the transmission-type geometric holographic screen is C, and the total length of the intersecting lines of the incident surface or the emergent surface of the transmission-type geometric holographic screen and the corresponding plurality of angle expanding mirrorsAnd L, satisfying:
the unit of C and L is mm.
Further, the transmission type geometric holographic screen is kept horizontal, on a cross section which is respectively perpendicular to the transmission type geometric holographic screen and the field angle mirror, the center of the edge of the transmission type geometric holographic screen is used as an original point O, a horizontal line passing through the original point O is used as an X axis, and a vertical line passing through the original point O is used as a Y axis, so that the following requirements are met:
|y1+y2the | < 3 > and the unit mm;
wherein, y1And y2Respectively, the Y coordinate of the reflecting layer on the entrance surface side of the transmission-type geometric holographic screen 1 and the Y coordinate of the reflecting layer on the exit surface side of the transmission-type geometric holographic screen are the same X coordinate1+y2L represents y1+y2Absolute value of (a).
Furthermore, the minimum width of the single field angle lens is W mm, and W is more than or equal to 3.
Further, the angle between the single aperture angle mirror and the transmission type geometric holographic screen is adjustable.
Further, the intensity of the single aperture mirror satisfies: the weight of the flat lapping load is not less than 219 g.
The invention also provides a transmission-type geometric holographic screen with an opening angle, which is formed by splicing a plurality of transmission-type geometric holographic screens with opening angles.
The invention also provides an application of the transmission-type geometric holographic screen with the opening angle, which is particularly applied to a virtual display system and comprises display equipment, interactive equipment and the transmission-type geometric holographic screen with the opening angle, wherein an image of the display equipment forms a real image suspended in the air through optical conversion of the transmission-type geometric holographic screen with the opening angle, and the interactive equipment can identify the interactive information of a user.
The invention also provides an application of the transmission-type geometric holographic screen with the opening angle, which is particularly applied to a geometric holographic display system and comprises projection display equipment, interactive equipment and the transmission-type geometric holographic screen with the opening angle, wherein the projection light of the projection display equipment forms a conjugate image through optical conversion of the transmission-type geometric holographic screen with the opening angle, the light of the conjugate image is output to a window position for a user to watch, and the interactive equipment can identify the interactive information of the user.
Compared with the prior art, the invention has the advantages that: the invention can realize the obvious enlargement of the display window with relatively low cost by additionally arranging the angle expanding mirror, and simultaneously can increase the mechanical strength of the transmission type geometric holographic screen and improve the stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention,
figure 2 is a top view of figure 1,
figure 3 is a front view of figure 1,
FIG. 4 is a schematic view of the cross section A-A of FIG. 3 and a coordinate system having the center of the edge of the transmissive geometry hologram panel 1 as an origin O, a horizontal line passing through the origin O as an X-axis, and a vertical line passing through the origin O as a Y-axis,
figure 5 is a schematic view of the configuration of the field lens 21 in an arc configuration,
FIG. 6 is a schematic structural diagram of a rectangular transmission-type geometric holographic screen 1 with flare angle lens groups 2 respectively arranged on two long sides,
figure 7 is a schematic view of the minimum width W of the field lens 21 in a profiled configuration,
figure 8 is a schematic diagram of the optical path of the present invention,
FIG. 9 is a schematic diagram of the present invention applied to a virtual display system,
figure 10 is a schematic diagram of the present invention applied to a geometric holographic display system,
FIG. 11 is a schematic diagram of a flat-lapped load mass test,
fig. 12 is a schematic diagram of a transmission-type geometric holographic screen 1, highlighting the microstructure and the feature cell size, with the following reference numerals:
the device comprises a transmission type geometric holographic screen 1, a reflecting surface 11, an opening angle mirror group 2, an opening angle mirror 21, a display device 100, an interactive device 101, a transmission type geometric holographic screen with an opening angle 102 and a projection display device 103.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 12, the invention provides a transmission-type geometric holographic screen with field angle, which includes a transmission-type geometric holographic screen 1, at least one field angle lens group 2 is arranged around the edge of the transmission-type geometric holographic screen 1, the field angle lens group 2 is used for reflecting part of light rays beyond the edge of the transmission-type geometric holographic screen 1 onto the transmission-type geometric holographic screen 1, and participate in imaging through optical transformation of the transmission-type geometric holographic screen 1, the field angle lens 21 plays a role in reflecting light rays to increase the optical aperture, so that a certain angle is required between the field angle lens group 2 and the incident plane and the emergent plane of the transmission-type geometric holographic screen 1;
considering that the aperture angle lens group 2 acts in a manner of reflecting light rays, so that part of light rays which cannot be received by the transmission-type geometric holographic screen 1 originally can be received by the transmission-type geometric holographic screen after optical conversion and then subjected to imaging conversion, the geometric relationship between the aperture angle lens group 2 and the transmission-type geometric holographic screen 1 needs to be finely adjusted during design, so as to achieve the optimal display effect. If the aperture angle lens group 2 is not properly arranged, the system may become more complex and redundant, and even the effective optical aperture may be reduced, and the following description will be given on the specific structural relationship:
each group of field angle lens group 2 consists of a pair of field angle lenses 21 arranged at an angle theta, wherein the angle between one field angle lens 21 and the incident surface of the transmission type geometric holographic screen 1 is alpha, and the included angle between the other field angle lens 21 and the emergent surface of the transmission type geometric holographic screen 1 is beta, so that the requirements are met: alpha is more than or equal to 90 degrees and less than or equal to 160 degrees, beta is more than or equal to 90 degrees and less than or equal to 160 degrees, and alpha-beta represents the absolute value of alpha-beta, so that the alpha-beta can be well matched with the alpha-beta to achieve the aim of increasing the effective optical aperture, in practical application, the alpha and the beta are ensured to be close to each other as much as possible, and are preferably the same, namely, the field angle mirrors 21 arranged at the two sides of the incident plane and the emergent plane of the transmission type geometric holographic screen 1 are symmetrical with each other relative to the transmission type geometric holographic screen 1, and the effect is optimal;
if the angles alpha and beta are acute, the light path is blocked, but the effective optical aperture is reduced, so that the method cannot be applied;
the field angle mirror 21 may be a plane mirror or a curved mirror, and it should be noted that when the curved mirror is used, α is an intersection line between the field angle mirror 21 on the incident surface side and the transmission-type geometric hologram screen 1, an included angle between a tangent plane of the curved field angle mirror 21 and the transmission-type geometric hologram screen 1, β is an intersection line between the field angle mirror 21 on the exit surface side and the transmission-type geometric hologram screen 1, and an included angle between a tangent plane of the curved field angle mirror 21 and the transmission-type geometric hologram screen 1 is shown in fig. 4;
the field angle lens group 2 can effectively enlarge the optical aperture and increase the structural stability of the whole screen. It is known from the working principle of the transmission type geometric holographic screen 1 that when it is deformed by the external influence (such as vibration, blowing of a fan, etc.), it will generate significant aberration, so that it cannot work normally. Therefore, it is necessary to increase the structural stability of the composite material by some designs. The splayed lens group 2 can form inverted triangular branches at the edge, the structure can obviously improve the stability of the structure, and meanwhile, the damage condition under extreme conditions such as violent striking, falling, impact and the like can be greatly reduced. Therefore, from many aspects, the material of the wide-angle mirror 21 is preferably selected to have a certain mechanical strength, and preferably a mirror surface made of glass or transparent plastic, and the structural simulation shows that when the wide-angle mirror 21 satisfies: when the flat lapping load mass is more than or equal to 219g, the overall structural strength of the transmission-type geometric holographic screen with the opening angle can be greatly improved, the opening angle mirror 21 generally needs to be provided with a plating layer, the surface of the opening angle mirror can only reflect a small amount of light rays for glass or transparent plastic materials, the plating layer can play a leading role in reflecting the light rays, and the plating layer of the opening angle mirror 21 is a working reflecting layer;
referring to fig. 11, the above method for measuring the weight of the flatwise load is as follows:
selecting a test strip (a strip made of the same material as the wide-angle mirror 21 or a strip cut from the wide-angle mirror 21) with the thickness consistent with the wide-angle mirror 21 and the width of 5 +/-1 mm, transversely mounting the test strip on a bracket at a distance of 4 +/-0.5 cm, suspending a 219g weight on the test strip, measuring the deformation displacement of the test strip in the vertical direction to be less than 3 mm, judging that the flat-mounting load quality is more than or equal to 219g if the deformation displacement is not more than 3 mm and the breakage is not caused, and otherwise, not meeting the requirement;
as shown in fig. 8, it can be known from the optical path schematic diagram that the flare angle lens group 2 is respectively matched with the flare angle lenses 21 on both sides of the incident surface and the emergent surface of the transmission-type geometric holographic screen 1 to increase the effective optical aperture, the light of the image point is reflected by the flare angle lens 21 on one side of the incident surface of the transmission-type geometric holographic screen 1 in sequence, the optical conversion of the transmission-type geometric holographic screen 1 is performed, and the optical conjugate conversion of the image point is performed after the light of the image point is reflected by the flare angle lens 21 on one side of the emergent surface of the transmission-type geometric holographic screen 1. In order to make the aberration small enough to meet the imaging requirement in the actual scene, the geometrical relationship between the pair of field angle mirrors 21 of the field angle mirror group 2 and the transmission type geometrical holographic screen 1 needs to be finely adjusted. Theoretical calculation and experimental verification find that when the transmission-type geometric holographic screen 1 is kept horizontal, on a cross section perpendicular to both the transmission-type geometric holographic screen 1 and the field lens 21, the coordinate system with the center of the edge of the transmission-type geometric holographic screen 1 as an origin O, a horizontal line passing through the origin O as an X axis and a vertical line passing through the origin O as a Y axis, as shown in FIG. 4, satisfies | Y1+y2When the | < 3 >, the unit mm can meet the requirement of actual imaging quality and meet the display requirements of common outdoor advertisements, self-service ticket purchasing systems and the like;
wherein, y1And y2Respectively, the Y coordinate of the reflection layer of the section of the field lens 21 on the incident surface side of the transmission-type geometric holographic screen 1 and the Y coordinate of the reflection layer of the section of the field lens 21 on the emergent surface side of the transmission-type geometric holographic screen 1 are the same X coordinate, the reflection layer is the plating layer, | Y1+y2L represents y1+y2Absolute value of (d);
to obtain better imaging quality, | y is preferred1+y2The | < 2mm, at this time, the common image quality display requirement of the common desktop can be met;
further, to obtain better imaging quality, | y is preferable1+y2The | < 1mm, at the moment, the display requirement of high-definition image quality of a common desktop can be met;
in addition, due to different application scenarios, the transmissive geometric holographic screen 1 itself has great differences, which are often reflected in the microstructure morphology and size. For example, for mobile devices, the naked eye is very sensitive to aberrations, whereas for stage or casino applications, the user is relatively far from the screen, where the microstructures are less noticeable even if the size is large. Therefore, in order to deal with different design scenes, a relatively universal design rule, namely | y1+y2The characteristic element size is less than or equal to 5 times, the characteristic element size is the distance between two adjacent reflecting surfaces 11 of the transmission type geometric holographic screen 1 and is represented by d, and figure 12 shows. When the distance between two adjacent reflecting surfaces 11 of the transmission-type geometric holographic screen 1 is not a fixed value, each microstructure needs to meet the design rule;
the perimeter of the transmission-type geometric holographic screen 1 is C mm, the sum of the lengths of the intersecting lines of all the angle expanding mirrors 21 on the incident surface side or the exit surface side of the transmission-type geometric holographic screen 1 and the transmission-type geometric holographic screen 1 is L mm, and preferably satisfies that
The effective optical aperture can be obviously increased, and the method has great practical value;
taking the angle mirror 21 on the incident surface side of the transmission-type geometric holographic screen 1 as an example for explanation, since the incident surface side includes at least one angle mirror 21, the lengths of the intersecting lines of the angle mirrors 21 and the transmission-type geometric holographic screen 1 can be sequentially marked as L1、L2、……、LnThe sum of the lengths of the intersecting lines of all the angle mirrors 21 and the transmission-type geometric holographic screen 1 is L1+L2+……+LnThe unit of the length is mm;
in general, the transmissive geometric holographic panel 1 and the field angle mirror 21 are generally in regular shapes, such as rectangles, such that the field angle mirror 21 can be disposed on four sides or partial edges of the transmissive geometric holographic panel 1, such as on one short side, two short sides, one long side, two long sides, or one short side and one long side of the transmissive geometric holographic panel 1, and the specific arrangement can be flexibly adjusted according to the practical application, as shown in fig. 1 to 3, and a set of field angle mirror sets 2 is disposed on one short side and one long side of the rectangular transmissive geometric holographic panel 1, respectively, so that the total length L of the intersecting lines of all the field angle mirrors 21 on the incident surface side of the transmissive geometric holographic panel 1 and the transmissive geometric holographic panel 1 is L ═ L1+L2；
As a preferred embodiment, as shown in fig. 6, the aperture angle lens group 2 is respectively arranged on two long sides of the transmission type geometric holographic screen 1, so that the processing procedure during manufacturing and processing can be reduced, and the optical aperture can be obviously increased;
of course, the transmission-type geometric holographic screen 1 and the field angle mirror 21 can also adopt other special-shaped structures;
preferably, the minimum width of the single gonioscope 21 is W, and the unit mm, W is greater than or equal to 3, so that the user can obviously feel the increase of the effective aperture, and a larger visual space experience is brought;
it should be noted that, when the wide-angle mirror 21 is a regular rectangle, the minimum width of a single wide-angle mirror 21 is the width of the rectangular wide-angle mirror 21, for decorative and aesthetic purposes, the opposite sides of the intersecting line of the wide-angle mirror 21 may be made into an irregular shape, such as a bevel edge, a wavy edge, etc., as shown in fig. 7, and when the shape of the wide-angle mirror 21 is irregular, the minimum width of a single wide-angle mirror 21 is the minimum perpendicular distance between the intersecting line and the opposite side thereof;
when the wide-angle mirror 21 is a curved mirror structure, the width of a single wide-angle mirror 21 is the distance between the start and stop points of the curved mirror, as shown in fig. 5;
due to the large difference of screens of different application scenes, the screen is difficult to design by using a fixed size and adopts a proportional designThe counter is more efficient, defining: the maximum line length of the transmission type geometric holographic screen 1 is LScreen (B)The unit mm, the maximum line length L of the transmission type geometric holographic screen 1Screen (B)For the length of the largest line segment that can be drawn on the screen, for example, the length of the diagonal line for a rectangular screen and the diameter of the circle for a circular screen, W is preferably not less than 0.02LScreen (B)At this time, the optical aperture can be effectively increased, but if W is too large, the light restriction effect is deteriorated, some light cannot reach the transmissive geometric hologram screen 1 after being reflected by the mirror 21, and the effect of enlarging the display area cannot be achieved, and further, W is preferably not more than 0.3LScreen (B)；
In order to increase the versatility and flexibility of the application of the present invention, the angle between the single wide-angle mirror 21 and the transmission-type geometric holographic screen 1 can be adjusted, specifically, it can be realized by the existing movable assembly, hinge joint, etc.
When the invention is actually used, part of light rays which exceed the edge of the transmission-type geometric holographic screen 1 are reflected to the transmission-type geometric holographic screen 1 through the optical conversion of the additionally arranged field-angle mirror 21, and the part of light rays can participate in imaging through the optical conversion of the transmission-type geometric holographic screen 1, so that a display window can be effectively enlarged.
The application of the transmission-type geometric holographic screen with a field angle in the virtual display system of the present invention, as shown in fig. 9, specifically includes an existing display device 100 and an interactive device 101, and is further equipped with the transmission-type geometric holographic screen with a field angle 102 of the present invention to implement virtual floating imaging, where the display device 100 may employ an LCD screen, an LED screen, an OLED screen, a volumetric display device, and the like, an image displayed by the display device 100 forms a real image floating in the air through optical conversion of the transmission-type geometric holographic screen with a field angle 102, the interactive device 101 may recognize interactive information of a user, and the interactive device 101 includes a controller and an interactive action capturing unit, and belongs to the conventional prior art, and is not described in detail.
The invention relates to an application of a transmission-type geometric holographic screen with a field angle in a geometric holographic display system, as shown in fig. 10, specifically comprising a projection display device 103 and an interaction device 101, and further equipped with a transmission-type geometric holographic screen with a field angle 102 of the invention to realize 3D holographic display, wherein the projection display device 103 is a device (a projector, a holographic projector, a 3D projector, etc.) for displaying pictures in a projection manner, projected light forms a conjugate image through optical conversion of the transmission-type geometric holographic screen with a field angle 102, light of the conjugate image is output to a window position for a user to watch, the interaction device 101 can identify interaction information of the user, the interaction device 101 comprises a controller and an interaction action capturing unit, belongs to the conventional prior art, and is not described in detail;
for non-wearable application scenarios, a user tracking system is also needed for tracking the motion of the user and adjusting the position of the window so that the position of the window always covers the eyes of the user.
In order to further realize the ultra-large aperture holographic screen, a plurality of transmission-type geometric holographic screens with opening angles can be spliced to form a larger geometric holographic screen, such as an array form and the like
The ultra-large aperture holographic screen formed by splicing a plurality of transmission-type geometric holographic screens with opening angles can be applied to the virtual display system or the geometric holographic system to realize the remarkable increase of the optical aperture of the system.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (11)
1. A transmission-type geometric holographic screen with an opening angle comprises a transmission-type geometric holographic screen (1), and is characterized in that: at least one group of field angle lens groups (2) are arranged along the periphery of the transmission type geometric holographic screen (1), and the field angle lens groups (2) are used for reflecting part of light rays exceeding the periphery of the transmission type geometric holographic screen (1) onto the transmission type geometric holographic screen (1) and participating in imaging through optical transformation of the transmission type geometric holographic screen (1);
each group of field angle lens group (2) consists of a pair of field angle lenses (21) arranged at an angle theta, wherein the angle between one field angle lens (21) and the incident surface of the transmission type geometric holographic screen (1) is alpha, and the included angle between the other field angle lens (21) and the emergent surface of the transmission type geometric holographic screen (1) is beta, so that the requirements are met: alpha is more than or equal to 90 degrees and less than or equal to 160 degrees, beta is more than or equal to 90 degrees and less than or equal to 160 degrees, alpha-beta is less than or equal to 5 degrees, and alpha-beta represents the absolute value of alpha-beta.
2. The angular transmissive geometric holographic screen of claim 1, wherein: the perimeter of the transmission type geometric holographic screen (1) is C, the length sum of the intersecting lines of the incident surface or the emergent surface of the transmission type geometric holographic screen (1) and the corresponding field angle mirrors (21) is L, and the following conditions are met:
the unit of C and L is mm.
3. The angular transmissive geometric holographic screen of claim 1, wherein: keeping the transmission type geometric holographic screen (1) horizontal, on the section respectively perpendicular to the transmission type geometric holographic screen (1) and the field angle mirror (21), taking the center of the edge of the transmission type geometric holographic screen (1) as an origin O, taking a horizontal line passing through the origin O as an X axis, and taking a vertical line passing through the origin O as a coordinate system of a Y axis, satisfying the following conditions:
|y1+y2the | < 3 > and the unit mm;
wherein, y1And y2When the X coordinates are the same, the Y coordinate of the section reflecting layer of the field lens (21) on the incident surface side of the transmission type geometric holographic screen (1) and the Y coordinate, | Y coordinate of the section reflecting layer of the field lens (21) on the emergent surface side of the transmission type geometric holographic screen (1)1+y2L represents y1+y2Absolute value of (a).
4. The angular transmissive geometric holographic screen of claim 1, wherein: the minimum width of the single opening angle mirror (21) is W mm, and W is more than or equal to 3.
5. The angular transmissive geometric holographic screen of claim 1, wherein: the angle between the single field angle mirror (21) and the transmission type geometric holographic screen (1) is adjustable.
6. The angular transmissive geometric holographic screen of claim 1, wherein: the intensity of the single aperture mirror (21) satisfies: the weight of the flat lapping load is not less than 219 g.
7. The utility model provides a take aperture angle transmission type geometry holographic screen which characterized in that: formed by splicing a plurality of angular transmission geometry holographic screens as claimed in any of claims 1 to 5.
8. Application of the aperture-angle transmissive geometrical holographic screen according to any of claims 1 to 6, in particular to a virtual display system, comprising a display device (100), an interactive device (101) and an aperture-angle transmissive geometrical holographic screen (102), wherein an image of the display device (100) is optically transformed by the aperture-angle transmissive geometrical holographic screen (102) to form a real image floating in the air, and the interactive device (101) can recognize the interactive information of the user.
9. Application of the angular transmissive geometric holographic screen according to claim 6, in particular for a virtual display system, comprising a display device (100), an interactive device (101) and an angular transmissive geometric holographic screen (102), wherein the image of the display device (100) is optically transformed by the angular transmissive geometric holographic screen (102) to form a real image floating in the air, and the interactive device (101) can recognize the interactive information of the user.
10. The application of the transmission-type geometric holographic screen with the opening angle as claimed in any one of claims 1 to 5, in particular to a geometric holographic display system, comprising a projection display device (103), an interactive device (101) and the transmission-type geometric holographic screen with the opening angle (102), wherein the projection light of the projection display device (103) forms a conjugate image through optical conversion of the transmission-type geometric holographic screen with the opening angle (102), the light rays of the conjugate image are output to a window position for a user to watch, and the interactive device (101) can recognize the interactive information of the user.
11. The application of the transmission-type geometric holographic screen with the opening angle as set forth in claim 6, in particular to a geometric holographic display system, comprising a projection display device (103), an interactive device (101) and the transmission-type geometric holographic screen with the opening angle (102), wherein the projection light of the projection display device (103) forms a conjugate image through optical conversion of the transmission-type geometric holographic screen with the opening angle (102), the light of the conjugate image is output to a window position for a user to watch, and the interactive device (101) can recognize the interactive information of the user.
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Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005134615A (en) * | 2003-10-30 | 2005-05-26 | Nikon Corp | Image viewing apparatus |
| CN201122207Y (en) * | 2006-12-22 | 2008-09-24 | 东舞工程咨询（上海）有限公司 | Phantom image forming apparatus |
| US20100177402A1 (en) * | 2007-06-21 | 2010-07-15 | National Institute Of Information And Communications Technology | Floating image interaction device and its program |
| JP2011081309A (en) * | 2009-10-09 | 2011-04-21 | Pioneer Electronic Corp | Spatial video display device |
| CN102033317A (en) * | 2009-09-28 | 2011-04-27 | 斯坦雷电气株式会社 | Display device |
| CN102169282A (en) * | 2011-04-19 | 2011-08-31 | 浙江大学 | Multi-view desktop type three-dimensional display device |
| CN102231044A (en) * | 2011-06-29 | 2011-11-02 | 浙江大学 | Stereoscopic three-dimensional display based on multi-screen splicing |
| CN102804026A (en) * | 2009-05-11 | 2012-11-28 | 独立行政法人情报通信研究机构 | Display device |
| JP2013105000A (en) * | 2011-11-14 | 2013-05-30 | Toshiba Corp | Video display device and video display method |
| CN103713392A (en) * | 2012-09-28 | 2014-04-09 | Nlt科技股份有限公司 | Space image forming element, method of manufacturing the same, display device, and terminal |
| US20140168210A1 (en) * | 2012-01-20 | 2014-06-19 | Nicholas Sheppard Bromer | Mirror array display system |
| TW201443484A (en) * | 2013-04-24 | 2014-11-16 | Asukanet Co Ltd | Stereoscopic image display device and method for displaying stereoscopic image |
| CN104216128A (en) * | 2014-09-01 | 2014-12-17 | 北京邮电大学 | Display device and display system of full-parallax three-dimensional light field |
| CN105760810A (en) * | 2015-02-10 | 2016-07-13 | 公安部第研究所 | Transmission type three-dimensional finger vein data acquisition apparatus |
| US20170017089A1 (en) * | 2015-07-17 | 2017-01-19 | Lg Electronics Inc. | Micro mirror array, manufacturing method of the micro mirror array, and floating display device including the micro mirror array |
| JP2017067933A (en) * | 2015-09-29 | 2017-04-06 | 株式会社パリティ・イノベーションズ | Two-faced corner reflector array |
| JP2017173527A (en) * | 2016-03-23 | 2017-09-28 | コニカミノルタ株式会社 | Aerial video display device |
| CN107850701A (en) * | 2015-07-27 | 2018-03-27 | 索尼公司 | Optics and display unit |
| CN109567388A (en) * | 2019-01-22 | 2019-04-05 | 像航（上海）科技有限公司 | Without medium air-borne imagery intelligence table |
| CN209118668U (en) * | 2018-09-30 | 2019-07-16 | 深圳市眸合科技有限公司 | A kind of optical system for realizing multi-screen seamless tiled display |
| CN110166616A (en) * | 2018-03-27 | 2019-08-23 | 梁中新 | A kind of structure and method preventing visual fatigue |
| CN110612471A (en) * | 2019-06-19 | 2019-12-24 | 深圳盈天下视觉科技有限公司 | Aerial imaging system and aerial imaging method for increasing visual range |
| CN110687625A (en) * | 2019-09-30 | 2020-01-14 | 浙江棱镜文化传媒有限公司 | Flat lens for air imaging and air imaging system |
| CN210109474U (en) * | 2019-06-19 | 2020-02-21 | 深圳盈天下视觉科技有限公司 | Aerial imaging system for increasing visualization range |
| CN111128056A (en) * | 2018-10-15 | 2020-05-08 | 青海荟源工贸有限公司 | Holographic 3D advertisement of transmission-type machine |
| CN111240034A (en) * | 2020-03-25 | 2020-06-05 | 北京航空航天大学 | 3D display device |
| US20200344461A1 (en) * | 2019-04-26 | 2020-10-29 | Tianma Japan, Ltd. | Display device |
| CN112305779A (en) * | 2020-11-25 | 2021-02-02 | 万维科研有限公司 | Display device and electronic apparatus |
| CN212541009U (en) * | 2020-08-06 | 2021-02-12 | 荆门市探梦科技有限公司 | Transmission type geometric holographic display system for optimizing display configuration |
-
2021
- 2021-02-23 CN CN202110200554.6A patent/CN112946914B/en active Active
Patent Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005134615A (en) * | 2003-10-30 | 2005-05-26 | Nikon Corp | Image viewing apparatus |
| CN201122207Y (en) * | 2006-12-22 | 2008-09-24 | 东舞工程咨询（上海）有限公司 | Phantom image forming apparatus |
| US20100177402A1 (en) * | 2007-06-21 | 2010-07-15 | National Institute Of Information And Communications Technology | Floating image interaction device and its program |
| CN102804026A (en) * | 2009-05-11 | 2012-11-28 | 独立行政法人情报通信研究机构 | Display device |
| CN102033317A (en) * | 2009-09-28 | 2011-04-27 | 斯坦雷电气株式会社 | Display device |
| JP2011081309A (en) * | 2009-10-09 | 2011-04-21 | Pioneer Electronic Corp | Spatial video display device |
| CN102169282A (en) * | 2011-04-19 | 2011-08-31 | 浙江大学 | Multi-view desktop type three-dimensional display device |
| CN102231044A (en) * | 2011-06-29 | 2011-11-02 | 浙江大学 | Stereoscopic three-dimensional display based on multi-screen splicing |
| JP2013105000A (en) * | 2011-11-14 | 2013-05-30 | Toshiba Corp | Video display device and video display method |
| US20140168210A1 (en) * | 2012-01-20 | 2014-06-19 | Nicholas Sheppard Bromer | Mirror array display system |
| CN103713392A (en) * | 2012-09-28 | 2014-04-09 | Nlt科技股份有限公司 | Space image forming element, method of manufacturing the same, display device, and terminal |
| TW201443484A (en) * | 2013-04-24 | 2014-11-16 | Asukanet Co Ltd | Stereoscopic image display device and method for displaying stereoscopic image |
| CN104216128A (en) * | 2014-09-01 | 2014-12-17 | 北京邮电大学 | Display device and display system of full-parallax three-dimensional light field |
| CN105760810A (en) * | 2015-02-10 | 2016-07-13 | 公安部第研究所 | Transmission type three-dimensional finger vein data acquisition apparatus |
| US20170017089A1 (en) * | 2015-07-17 | 2017-01-19 | Lg Electronics Inc. | Micro mirror array, manufacturing method of the micro mirror array, and floating display device including the micro mirror array |
| CN107850701A (en) * | 2015-07-27 | 2018-03-27 | 索尼公司 | Optics and display unit |
| JP2017067933A (en) * | 2015-09-29 | 2017-04-06 | 株式会社パリティ・イノベーションズ | Two-faced corner reflector array |
| JP2017173527A (en) * | 2016-03-23 | 2017-09-28 | コニカミノルタ株式会社 | Aerial video display device |
| CN110166616A (en) * | 2018-03-27 | 2019-08-23 | 梁中新 | A kind of structure and method preventing visual fatigue |
| CN209118668U (en) * | 2018-09-30 | 2019-07-16 | 深圳市眸合科技有限公司 | A kind of optical system for realizing multi-screen seamless tiled display |
| CN111128056A (en) * | 2018-10-15 | 2020-05-08 | 青海荟源工贸有限公司 | Holographic 3D advertisement of transmission-type machine |
| CN109567388A (en) * | 2019-01-22 | 2019-04-05 | 像航（上海）科技有限公司 | Without medium air-borne imagery intelligence table |
| US20200344461A1 (en) * | 2019-04-26 | 2020-10-29 | Tianma Japan, Ltd. | Display device |
| CN210109474U (en) * | 2019-06-19 | 2020-02-21 | 深圳盈天下视觉科技有限公司 | Aerial imaging system for increasing visualization range |
| CN110612471A (en) * | 2019-06-19 | 2019-12-24 | 深圳盈天下视觉科技有限公司 | Aerial imaging system and aerial imaging method for increasing visual range |
| CN110687625A (en) * | 2019-09-30 | 2020-01-14 | 浙江棱镜文化传媒有限公司 | Flat lens for air imaging and air imaging system |
| CN111240034A (en) * | 2020-03-25 | 2020-06-05 | 北京航空航天大学 | 3D display device |
| CN212541009U (en) * | 2020-08-06 | 2021-02-12 | 荆门市探梦科技有限公司 | Transmission type geometric holographic display system for optimizing display configuration |
| CN112305779A (en) * | 2020-11-25 | 2021-02-02 | 万维科研有限公司 | Display device and electronic apparatus |
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