CN214225588U - AR optical system and AR eyeglasses - Google Patents
AR optical system and AR eyeglasses Download PDFInfo
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- CN214225588U CN214225588U CN202120249477.9U CN202120249477U CN214225588U CN 214225588 U CN214225588 U CN 214225588U CN 202120249477 U CN202120249477 U CN 202120249477U CN 214225588 U CN214225588 U CN 214225588U
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Abstract
The utility model discloses a AR optical system and AR glasses, AR optical system includes light-emitting component and beam split unit, light-emitting component is used for penetrating out the light beam, beam split unit is located light-emitting component's outgoing light path, beam split unit has and is used for the transflective first face and the second face that light beam and relative set up, beam split unit's first face with beam split unit's second face is the contained angle setting, so that the light beam warp beam split unit's first face reflection form like with the light beam sees through beam split unit's first face and follow beam split unit's second face reflection forms like the coincidence. The utility model provides a AR glasses when carrying out AR formation of image, can not produce the ghost image.
Description
Technical Field
The utility model relates to an augmented reality technical field especially relates to an AR optical system and AR glasses.
Background
Along with the continuous development of virtual reality and augmented reality technology in recent years, AR glasses are widely applied to the field of daily life gradually, what mainly plays in the AR glasses is AR optical system, AR optical system has the characteristics that can three-dimensionally display, good development prospect has, but can adopt the form of sheet glass to pass through the reflection to light among the present AR optical system, the twice reflection of light on sheet glass upper and lower surface all can be imaged through imaging system, consequently the problem of ghost image still can appear when people's eye watches the image, influence visual effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective provides an AR optical system and AR glasses, aims at solving the problem that present AR optical system can appear the ghost image.
To achieve the above object, the present invention provides an AR optical system, including:
a light emitting assembly for emitting a light beam; and the number of the first and second groups,
the light splitting unit is positioned on an emergent light path of the light emitting component and is provided with a first surface and a second surface which are used for transmitting and reflecting the light beam and are arranged oppositely, and the first surface and the second surface of the light splitting unit are arranged at an included angle, so that an image formed by reflecting the light beam by the first surface of the light splitting unit is superposed with an image formed by reflecting the light beam by the second surface of the light splitting unit after the light beam penetrates through the first surface of the light splitting unit.
Optionally, the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle; and the number of the first and second groups,
a transflective film disposed on the first side of the substrate.
Optionally, the light splitting unit further includes an antireflection film disposed on the second surface of the substrate.
Optionally, the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle; and the number of the first and second groups,
a reflective polarizing film disposed on the first side of the substrate, or a polarizing composite film disposed on the first side of the substrate.
Optionally, the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle;
a reflective polarizing film disposed on a first side of the substrate; and the number of the first and second groups,
and the polarizing absorption film is arranged on the second surface of the substrate.
Optionally, the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle;
a phase retardation film provided on the first surface of the substrate; and the number of the first and second groups,
a reflective polarizing film disposed on the second side of the substrate.
Optionally, the light splitting unit includes:
the first substrate is provided with a first surface and a third surface which are oppositely arranged, and the first surface and the second surface of the first substrate are arranged at an included angle;
the second substrate is attached to a third surface of the first substrate and provided with a second surface arranged opposite to the third surface of the first substrate;
a phase retardation film disposed on a first surface of the first substrate;
a reflective polarizing film disposed on a third surface of the first substrate; and the number of the first and second groups,
and the polarizing absorption film is arranged on the second surface of the second substrate.
Optionally, the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle;
a phase retardation film provided on the first surface of the substrate; and the number of the first and second groups,
and a reflective polarizing film and a polarization absorption film which are stacked on the second surface of the substrate, the reflective polarizing film being disposed close to the phase retardation film, and the polarization absorption film being disposed away from the phase retardation film.
Optionally, the thickness of the phase retardation film is 5um to 200 um; and/or the presence of a gas in the gas,
the thickness of the reflective polarizing film is 5-200 um; and/or the presence of a gas in the gas,
the thickness of the polarization absorption film is 5 um-200 um.
The utility model discloses still provide an AR glasses, including foretell AR optical system, AR optical system includes:
a light emitting assembly for emitting a light beam; and the number of the first and second groups,
the light splitting unit is positioned on an emergent light path of the light emitting component and is provided with a first surface and a second surface which are used for transmitting and reflecting the light beam and are arranged oppositely, and the first surface and the second surface of the light splitting unit are arranged at an included angle, so that an image formed by reflecting the light beam by the first surface of the light splitting unit is superposed with an image formed by reflecting the light beam by the second surface of the light splitting unit after the light beam penetrates through the first surface of the light splitting unit.
The technical scheme of the utility model in, it is right through two faces setting of beam split unit beam of penetrating light the contained angle makes the image that the light beam is formed after the reflection of two faces can coincide to make people's eye can not appear the ghost image problem when watching the image, improve visual experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of an AR optical system provided by the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a light splitting unit of the AR optical system of FIG. 1;
fig. 3 is a schematic structural diagram of another embodiment of the light splitting unit of the AR optical system of fig. 1.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Set up AR optical system in order to realize AR formation of image in the AR glasses, AR optical system generally includes light-emitting component and beam split unit, and the beam split unit is plate glass generally, and plate glass's upper surface and lower surface are parallel, and light is at plate glass upper surface's reflection and sees through the upper surface and all can image through imaging system at the reflection of lower surface to lead to people's eye ghost image appearing when watching the image, visual effect greatly reduced.
In view of this, the utility model provides a AR optical system and AR glasses, contained angle setting is personally submitted to two of beam split unit, solves the problem that present AR optical system appears the ghost image. Fig. 1 to fig. 3 illustrate an embodiment of an AR optical system provided by the present invention.
Referring to fig. 1, the optical system includes a light emitting component 1 and a light splitting unit 2, the light emitting component 1 is configured to emit a light beam, the light splitting unit 2 is located on an emitting light path of the light emitting component 1, the light splitting unit 2 has a first surface 21 and a second surface 22, which are configured to transmit and reflect the light beam and are opposite to each other, and the first surface 21 and the second surface 22 of the light splitting unit 2 are disposed at an included angle, so that an image formed by the light beam reflected by the first surface 21 of the light splitting unit 2 coincides with an image formed by the light beam reflected by the second surface 22 of the light splitting unit 2 after passing through the first surface 21 of the light splitting unit 2.
The technical scheme of the utility model in, it is right through two faces of the 2 transmission reflection beams of beam splitting unit set up the contained angle, make the image that the light beam is formed after the reflection of two faces can coincide to make people's eye can not appear the ghost image problem when watching the image, improve visual experience.
There are various ways to realize the light splitting effect of the light splitting unit 2, and the following description will be made in a case-by-case manner.
In an embodiment, as shown in fig. 2, the light splitting unit 2 includes a substrate 23 and a transflective film 211, the substrate 23 has the first surface 21 and the second surface 22 which are oppositely disposed, the first surface 21 and the second surface 22 of the substrate 23 are disposed at an included angle, the transflective film 211 is disposed on the first surface 21 of the substrate 23, and the light beam is reflected by the transflective film 211 and is overlapped with an image formed by being transmitted by the transflective film 211 and then being reflected by the second surface 22, so as to improve the effect of eliminating the double image.
Further, the light splitting unit 2 further includes an antireflection film 221 disposed on the second surface 22 of the substrate 23, and by disposing the antireflection film 221, transmission of the second surface 22 is facilitated, and reflection is reduced.
In addition, in another implementation manner, as shown in fig. 2, the light splitting unit 2 includes a substrate 23, the substrate 23 has the first surface 21 and the second surface 22 which are oppositely arranged, and the first surface 21 and the second surface 22 of the substrate 23 are arranged at an included angle, and a reflective polarizing film disposed on the first surface 21 of the substrate 23, or a polarizing composite film disposed on the first surface 21 of the substrate 23. The reflective polarizing film has the characteristics of transmitting the first linearly polarized light and reflecting the second linearly polarized light, so that the light of the light beam reflected by the reflective polarizing film or the polarizing composite film is superposed with an image formed by the light of the light beam which penetrates through the first surface 21 and is reflected by the second surface 22, and the effect of eliminating double images is further achieved.
Moreover, in another implementation manner, as shown in fig. 2, the light splitting unit 2 includes a substrate 23, the substrate 23 has the first surface 21 and the second surface 22 which are oppositely disposed, the first surface 21 and the second surface 22 of the substrate 23 are disposed at an included angle, the first surface 21 of the substrate 23 is provided with a reflective polarizing film, the second surface 22 of the substrate 23 is provided with a polarization absorbing film, and in this configuration, when AR imaging is performed, the light reflected by the reflective polarizing film of the light beam and the light reflected by the polarization absorbing film after passing through the reflective polarizing film are overlapped to form an image, so that a ghost image is eliminated.
In another implementation manner, as shown in fig. 2, the light splitting unit 2 includes a substrate 23, the substrate 23 has the first surface 21 and the second surface 22 which are oppositely disposed, and the first surface 21 and the second surface 22 of the substrate 23 are disposed at an included angle, the first surface 21 of the substrate 23 is provided with a phase retardation film, and the second surface 22 of the substrate 23 is provided with a reflective polarizing film, so that when AR imaging is performed, an image formed by light reflected by the phase retardation film of the first surface 21 of the light beam and light transmitted through the first surface 21 and then reflected by the reflective polarizing film of the second surface 22 is overlapped, thereby eliminating a ghost image.
In another implementation, as shown in fig. 2, the light splitting unit 2 includes a substrate 23, the substrate 23 has the first surface 21 and the second surface 22 disposed oppositely, the first surface 21 and the second surface 22 of the substrate 23 form an included angle, the first surface 21 of the substrate 23 is provided with a phase retardation film, a reflective polarizing film disposed close to the phase retardation film and a polarization absorbing film disposed far from the phase retardation film are stacked on the second surface 22 of the substrate 23, by arranging the reflective polarizing film and the polarizing absorption film in a laminated manner, stray light reflected from the bottom can be eliminated, meanwhile, the light reflected by the first surface 21 of the light beam coincides with an image formed by the light transmitted by the first surface 21 and reflected by the reflective polarizing film and the polarizing absorption film, thereby eliminating a ghost image.
In another implementation manner, as shown in fig. 3, the light splitting unit 2 includes a first substrate 24 and a second substrate 25, the first substrate 24 has a first surface 21 and a third surface 241 which are oppositely disposed, the first surface 21 of the first substrate 24 and the second surface 22 form an included angle, the second substrate 25 is attached to the third surface 241 of the first substrate 24, the second substrate 25 has a second surface 22 which is oppositely disposed to the third surface 241 of the first substrate 24, the first surface 21 of the first substrate 24 is provided with a phase retardation film, the third surface 241 of the first substrate 24 is provided with a reflective polarizing film, the second surface 22 of the second substrate 25 is provided with a polarization absorption film, and the phase retardation film, the first substrate 24, the reflective polarizing film, the second substrate 25 and the polarization absorption film are sequentially stacked, so that the light beam reflected by the phase retardation film, The light beams are overlapped with the images formed by the light beams which are transmitted by the phase delay film, the first substrate 24, the reflective polarizing film and the second substrate 25 in sequence and then reflected by the polarizing absorption film, so that the effect of eliminating the double images is also achieved. The second surface 22 of the second substrate 25 and the surface opposite to the second surface 22 are disposed in parallel, or may be disposed at an included angle, which is helpful for reducing interface reflection.
It should be noted that, the thickness of phase delay membrane is 5um ~ 200um, and/or, the thickness of reflective polarizing membrane is 5um ~ 200um, and/or, the thickness of polarization absorbing membrane is 5um ~ 200um, can be the alternative setting, also can select two settings, also can select three settings, no longer gives details here one by one, here all sets up phase delay membrane, reflective polarizing membrane and the thickness of polarization absorbing membrane to 5um ~ 200um, and each thickness parameter is the best is 5um ~ 50um, adopts the polarization material that the thickness is thinner, further reduces the ghost image of production.
The AR optical system 100 further includes a lens 3 (see fig. 1) disposed on the light exit side of the light emitting element 1, and the lens 3 is disposed to enlarge an image displayed by the light emitting element 1, so as to facilitate viewing by human eyes.
The AR optical system 100 further includes a curved mirror 4 (see fig. 1) disposed on the reflection optical path of the light splitting unit 2, and the curved mirror 4 can further reflect the light reflected by the light splitting unit 2. The curved surface type of the curved mirror 4 is not limited, and may be a spherical surface or an aspherical surface; the material of the curved mirror 4 is not limited, and may be glass or plastic, and will not be described in detail herein.
It should be noted that the present invention is not limited to the material of the substrate 23, the first substrate 24 and the second substrate 25, and may be a rigid transparent material such as glass or plastic, which is not described in detail herein.
It should be noted that the included angles are determined according to actual conditions, such as the thickness of the substrate 23, the distance between the light splitting unit 2 and the light emitting assembly 1, and the detailed description is omitted here.
It should be noted that, the phase retardation film of the present invention may be a QWP film; the reflective polarizing film may be, for example, an APF film, or other film material having a function of reflecting and polarizing light; the polarization absorbing film may be, for example, a POL film, which helps to eliminate stray light from the bottom, thereby reducing interference of external light, or other film materials having a polarization absorbing function for light, and will not be described in detail herein.
The utility model provides a AR glasses, including foretell AR optical system 100, AR glasses include foretell AR optical system 100's whole technical characteristics, consequently, also have the technological effect that above-mentioned whole technical characteristics brought, and here is no longer repeated one by one.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. An AR optical system, comprising:
a light emitting assembly for emitting a light beam; and the number of the first and second groups,
the light splitting unit is positioned on an emergent light path of the light emitting component and is provided with a first surface and a second surface which are used for transmitting and reflecting the light beam and are arranged oppositely, and the first surface and the second surface of the light splitting unit are arranged at an included angle, so that an image formed by reflecting the light beam by the first surface of the light splitting unit is superposed with an image formed by reflecting the light beam by the second surface of the light splitting unit after the light beam penetrates through the first surface of the light splitting unit.
2. The AR optical system according to claim 1, wherein the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle; and the number of the first and second groups,
a transflective film disposed on the first side of the substrate.
3. The AR optical system of claim 2, wherein the light splitting unit further comprises an antireflection film disposed on the second face of the substrate.
4. The AR optical system according to claim 1, wherein the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle; and the number of the first and second groups,
a reflective polarizing film disposed on the first side of the substrate, or a polarizing composite film disposed on the first side of the substrate.
5. The AR optical system according to claim 1, wherein the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle;
a reflective polarizing film disposed on a first side of the substrate; and the number of the first and second groups,
and the polarizing absorption film is arranged on the second surface of the substrate.
6. The AR optical system according to claim 1, wherein the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle;
a phase retardation film provided on the first surface of the substrate; and the number of the first and second groups,
a reflective polarizing film disposed on the second side of the substrate.
7. The AR optical system according to claim 1, wherein the light splitting unit includes:
the first substrate is provided with a first surface and a third surface which are oppositely arranged, and the first surface and the second surface of the first substrate are arranged at an included angle;
the second substrate is attached to a third surface of the first substrate and provided with a second surface arranged opposite to the third surface of the first substrate;
a phase retardation film disposed on a first surface of the first substrate;
a reflective polarizing film disposed on a third surface of the first substrate; and the number of the first and second groups,
and the polarizing absorption film is arranged on the second surface of the second substrate.
8. The AR optical system according to claim 1, wherein the light splitting unit includes:
the substrate is provided with the first surface and the second surface which are oppositely arranged, and the first surface and the second surface of the substrate are arranged at an included angle;
a phase retardation film provided on the first surface of the substrate; and the number of the first and second groups,
and a reflective polarizing film and a polarization absorption film which are stacked on the second surface of the substrate, the reflective polarizing film being disposed close to the phase retardation film, and the polarization absorption film being disposed away from the phase retardation film.
9. The AR optical system according to any one of claims 7 to 8, wherein the phase retardation film has a thickness of 5 to 200 um; and/or the presence of a gas in the gas,
the thickness of the reflective polarizing film is 5-200 um; and/or the presence of a gas in the gas,
the thickness of the polarization absorption film is 5 um-200 um.
10. AR glasses, characterized in that they comprise an AR optical system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120249477.9U CN214225588U (en) | 2021-01-28 | 2021-01-28 | AR optical system and AR eyeglasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120249477.9U CN214225588U (en) | 2021-01-28 | 2021-01-28 | AR optical system and AR eyeglasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214225588U true CN214225588U (en) | 2021-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120249477.9U Active CN214225588U (en) | 2021-01-28 | 2021-01-28 | AR optical system and AR eyeglasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214225588U (en) |
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2021
- 2021-01-28 CN CN202120249477.9U patent/CN214225588U/en active Active
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