CN114002765A - Adjustable optical system - Google Patents
Adjustable optical system Download PDFInfo
- Publication number
- CN114002765A CN114002765A CN202111155140.2A CN202111155140A CN114002765A CN 114002765 A CN114002765 A CN 114002765A CN 202111155140 A CN202111155140 A CN 202111155140A CN 114002765 A CN114002765 A CN 114002765A
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- lens
- air pump
- mirror
- mirror body
- control center
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- 230000003287 optical effect Effects 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000003190 augmentative effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
Abstract
The invention is suitable for the technical field of augmented reality, and provides an adjustable optical system which comprises a first lens and a second lens, wherein the first lens is used for focusing and amplifying a target image to obtain a virtual image, and the second lens is used for improving the definition of the virtual image; transparent liquid water is integrated in the first lens and the second lens; the first lens comprises a first knob, a first control center, a first air pump and a first lens body; the first knob controls the air flow output by the first air pump through the first control center, and the thickness distribution of the transparent liquid water in the first mirror body is adjusted so as to adjust the curvature of the first mirror body; the second lens comprises a second knob, a second control center, a second air pump and a second lens body; the second knob controls the air flow output by the second air pump through the second control center, and the thickness distribution of the transparent liquid water in the second mirror body is adjusted to adjust the curvature of the second mirror body. The invention can accurately adjust the definition of the virtual image obtained by human eyes.
Description
Technical Field
The invention relates to the technical field of augmented reality, in particular to an adjustable optical system.
Background
In the augmented reality technology, the imaging principle is that information on a screen is focused and projected to human eyes through a convex lens to realize an enlarged image. In order to enhance the focusing effect, a fisher texture is also typically engraved on the convex lens.
In practical application scenarios, the distance from the convex lens to the screen is fixed, but the distance from the human eye to the lens is not necessarily the same, so although the focus effect is enhanced by the fisher's veins, the scattering effect will still cause the resolution to decrease. The definition adjustment is also different from person to person, so that the definition can be adjusted accurately at present.
Disclosure of Invention
The invention mainly aims to provide an adjustable optical system to solve the problems that in the actual application scene of the existing augmented reality technology, the focusing effect cannot be used for resolving the problem that the definition of the scattering effect is reduced, and the definition adjusting effect is not accurate.
In order to achieve the above object, an embodiment of the present invention provides an adjustable optical system, including a first lens configured to focus and magnify a target image to obtain a virtual image, and a second lens configured to improve the sharpness of the virtual image;
transparent liquid water is integrated in the first lens and the second lens;
the first lens comprises a first knob, a first control center, a first air pump and a first lens body; the first knob controls the air flow output by the first air pump through the first control center, and the thickness distribution of the transparent liquid water in the first mirror body is adjusted to adjust the curvature of the first mirror body;
the second lens comprises a second knob, a second control center, a second air pump and a second lens body; the second knob controls the air flow output by the second air pump through the second control center, and the thickness distribution of the transparent liquid water in the second mirror body is adjusted to adjust the curvature of the second mirror body.
Optionally, the first knob controls the amount of air flow output by the first air pump through the first control center in the same manner as the second knob controls the amount of air flow output by the second air pump through the second control center;
after the first knob controls the air flow output by the first air pump through the first control center, the method comprises the following steps:
the first air pump compresses or sucks the liquid in the first mirror body.
Optionally, adjusting the curvature of the first mirror comprises:
calculating the focal length of the first mirror body according to the pressure generated by the air pump, the external environment pressure, the speed of the air flow output by the air pump and the radius of the first mirror body;
the focal length of the first mirror is synchronized with the curvature of the first mirror.
Optionally, the focal length of the first mirror is calculated according to the pressure generated by the air pump, the speed of the air flow output by the air pump, and the radius of the first mirror, and the formula is as follows:
wherein, P0The pressure is 1 atmosphere in the first mirror body, rho is air density, V is the speed of air flow output by the air pump, r is the radius of the first mirror body in a flat light state, and f is the focal length of the first mirror body.
Optionally, after the second knob controls the air flow output by the second air pump through the second control center, the method further includes:
the second air pump does not adjust the liquid in the second mirror body.
Optionally, after the second knob controls the air flow output by the second air pump through the second control center, the method further includes:
the second air pump does not adjust the liquid in the second mirror body.
Optionally, after the curvature of the first mirror body is adjusted and the curvature of the second mirror body is adjusted, the first mirror body is a convex lens, and the second mirror body is a concave lens.
Optionally, before the first knob controls the amount of air output by the first air pump through the first control center, the method includes:
and adjusting the first mirror body and the second mirror body into plane mirrors.
The embodiment of the invention provides an adjustable optical system, which integrates transparent liquid water in a first lens and a second lens, adjusts the thickness distribution of the transparent liquid water by using the pressure of a first air pump and a second air pump, achieves the purposes of adjusting the focal length and the distance, and realizes the controllability of the size of a virtual image obtained after a target image is focused and amplified and the accurate adjustment of the definition of the virtual image in human eyes.
Drawings
FIG. 1 is a schematic diagram of a tunable optical system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first lens provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second lens assembly according to an embodiment of the present invention;
fig. 4 is a supplementary illustration schematic diagram of lens parameters provided by the embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Suffixes such as "module", "part", or "unit" used to denote elements are used herein only for the convenience of description of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
As shown in fig. 1, an adjustable optical system 100 according to an embodiment of the present invention is applied to an actual scene of an augmented reality technology, and first focuses and amplifies an image on an AR screen to form a virtual image that can be recognized by a user, and then adjusts the definition of the virtual image obtained by human eyes, so as to achieve an effect of clearly watching a VR picture without wearing glasses for near vision.
In fig. 1, the adjustable optical system 100 comprises two adjustable lenses, a first lens 101 and a second lens 102, wherein the second lens 102 is placed between a human eye 200 and the first lens 101. The first lens 101 is used for focusing and amplifying a target image to obtain a virtual image; the second lens 102 is used to improve the clarity of the virtual image.
Transparent liquid water is integrated in the first lens 101 and the second lens 102.
It should be noted that the definition of the virtual image included in the embodiment of the present invention is the definition of the virtual image seen by human eyes, and for different users, the definition of the virtual image seen by the users is different if the vision conditions of the users are different.
In the embodiment of the present invention, the first lens 101 and the second lens 102 have the same composition structure, and fig. 2 and 3 respectively show the structure of the first lens 101 and the second lens 102, in detail, in fig. 2, the first lens 101 includes a first knob 1011, a first control center 1012, a first air pump 1013, and a first mirror 1014, and the first mirror 1014 integrates transparent liquid water therein; in practical applications, the first knob 1011 controls the amount of air flow output from the first air pump 1013 through the first control center 1012, and adjusts the thickness distribution of the transparent liquid water in the first mirror 1014 to adjust the curvature of the second mirror 1014. In fig. 3, the second lens 102 includes a second knob 1021, a second control center 1022, a second air pump 1023 and a second mirror 1024, and the second mirror 1024 is integrated with transparent liquid water; the second knob 1021 controls the air flow output from the second air pump 1023 through the second control center 1022, and adjusts the thickness distribution of the transparent liquid water in the second mirror 1024 to adjust the curvature of the second mirror 1024.
It is conceivable that the first lens 101 and the second lens 102 have the same composition structure, and the first knob 1011 controls the amount of air flow output by the first air pump 1013 through the first control center 1012 in the same manner as the second knob 1021 controls the amount of air flow output by the second air pump 1023 through the second control center 1022; the embodiment of the present invention takes the first lens 101 as an example, and describes a manner and an effect of controlling the air flow:
the effect that can be obtained after the first knob 1011 controls the amount of gas output by the first gas pump 1013 through the first control center 1012 is that the first gas pump 1013 compresses or sucks the liquid in the first mirror 1014. Similarly, the second knob 1021 can control the amount of air output from the second air pump 1023 through the second control center 1022, so that the second air pump 1023 can compress or suck the liquid in the second mirror 1024.
In practical application, when the liquid in the first mirror 1014 and the second mirror 1024 changes, the curvature of the first mirror 1014 changes, the focusing and amplifying effect of a target image is affected, and when the curvature of the second mirror 1024 changes, the definition of a virtual image obtained by human eyes is adjusted to be suitable for the definition of the current human eyes.
The implementation manner of adjusting the curvature of the first mirror body may be:
calculating the focal length of the first mirror body according to the pressure generated by the air pump, the external environment pressure, the speed of the air flow output by the air pump and the radius of the first mirror body;
the focal length of the first mirror is synchronized with the curvature of the first mirror.
Is formulated as:
wherein, P0The pressure is 1 atmosphere in the first mirror body, rho is air density, V is the speed of air flow output by the air pump, r is the radius of the first mirror body in a flat light state, and f is the focal length of the first mirror body.
Wherein, the speed of the air flow output by the air pump is determined by the power of the air pump, and the radius of the first lens is a fixed value. When the focal length is calculated, the focal length is synchronous with the curvature radius. This results in a sharp pattern by adjusting the curvature.
The above formula is obtained by equalizing the pressures inside and outside the mirror body, and in detail, the pressure P generated by the air pump is 1/2PV 2. Internal pressure F ═ P0N r 2, and the external pressure is F ═ P ^ S; wherein S is 2 h-r 2,then P is equal to F, corresponding to 1/2PV 2 (2 pi F h-pi r 2) P0Pi r 2, finally simplified to the above formula.
S, f, h, and r used in the above process are lens parameters, and as shown in fig. 4, a convex lens is taken as an example in the embodiment of the present invention, and positions represented by the above lens parameters are shown.
In a practical application scenario of the augmented reality technology, when a user uses the adjustable optical system provided by the embodiment of the invention, the curvature requirement of the first lens is input according to the requirement of the user on the imaging size of a display picture, and the curvature requirement of the second lens is input according to the vision condition of the user. When the first air pump and the second air pump adjust the curvatures of the first lens and the second lens to required values, the thicknesses of the transparent liquid water in the first lens body and the second lens body are distributed to enable the curvatures to reach the respective required values.
In the embodiment of the invention, after the curvature of the first lens body is adjusted and the curvature of the second lens body is adjusted, the first lens body of the first lens is a convex lens, and the second lens body of the second lens is a concave lens, so that the effects of focusing and amplifying and improving the definition are respectively realized.
In one embodiment, if the sharpness does not need to be adjusted, the method includes:
the second air pump does not adjust the liquid in the second mirror body.
It is understood that, before each use of the optical adjustment system 100, the numerical values of the first lens and the second lens in the system should be reset, that is, before the first knob controls the air flow output by the first air pump through the first control center, the method includes:
and adjusting the first mirror body and the second mirror body into plane mirrors.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the foregoing embodiments illustrate the present invention in detail, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. An adjustable optical system, comprising a first lens for focus-magnifying an image of an object to obtain a virtual image and a second lens for improving the sharpness of the virtual image;
transparent liquid water is integrated in the first lens and the second lens;
the first lens comprises a first knob, a first control center, a first air pump and a first lens body; the first knob controls the air flow output by the first air pump through the first control center, and the thickness distribution of the transparent liquid water in the first mirror body is adjusted to adjust the curvature of the first mirror body;
the second lens comprises a second knob, a second control center, a second air pump and a second lens body; the second knob controls the air flow output by the second air pump through the second control center, and the thickness distribution of the transparent liquid water in the second mirror body is adjusted to adjust the curvature of the second mirror body.
2. The tunable optical system of claim 1, wherein the first knob controls the amount of air output by the first air pump through the first control center in the same manner that the second knob controls the amount of air output by the second air pump through the second control center;
after the first knob controls the air flow output by the first air pump through the first control center, the method comprises the following steps:
the first air pump compresses or sucks the liquid in the first mirror body.
3. The adjustable optical system of claim 2, wherein adjusting the curvature of the first mirror comprises:
calculating the focal length of the first mirror body according to the pressure generated by the air pump, the external environment pressure, the speed of the air flow output by the air pump and the radius of the first mirror body;
the focal length of the first mirror is synchronized with the curvature of the first mirror.
4. An adjustable optical system as claimed in claim 2 or 3, wherein the focal length of the first mirror is calculated from the pressure generated by the air pump, the speed of the air flow output by the air pump, and the radius of the first mirror by the formula:
wherein, P0The pressure is 1 atmosphere in the first mirror body, rho is air density, V is the speed of air flow output by the air pump, r is the radius of the first mirror body in a flat light state, and f is the focal length of the first mirror body.
5. The adjustable optical system of claim 2 or 3, wherein after the second knob controls the amount of air flow output by the second air pump through the second control center, the adjustable optical system further comprises:
the second air pump does not adjust the liquid in the second mirror body.
6. The adjustable optical system of claim 4, wherein after the second knob controls the amount of air flow output by the second air pump via the second control center, the adjustable optical system further comprises:
the second air pump does not adjust the liquid in the second mirror body.
7. The tunable optical system of claim 1, 2, 3, or 6, wherein the first mirror is a convex lens and the second mirror is a concave lens after adjusting the curvature of the first mirror and the curvature of the second mirror.
8. The adjustable optical system of claim 1, 2, 3, or 6, wherein the first knob, prior to controlling the amount of air flow output by the first air pump via the first control center, comprises:
and adjusting the first mirror body and the second mirror body into plane mirrors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155140.2A CN114002765A (en) | 2021-09-29 | 2021-09-29 | Adjustable optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155140.2A CN114002765A (en) | 2021-09-29 | 2021-09-29 | Adjustable optical system |
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| Publication Number | Publication Date |
|---|---|
| CN114002765A true CN114002765A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111155140.2A Pending CN114002765A (en) | 2021-09-29 | 2021-09-29 | Adjustable optical system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661156A (en) * | 2008-08-26 | 2010-03-03 | 中国科学院西安光学精密机械研究所 | Method for realizing zoom optical system without moving lens group and optical system |
| CN206114931U (en) * | 2016-09-28 | 2017-04-19 | 张岩 | Lens that can zoom |
| CN207502823U (en) * | 2017-11-02 | 2018-06-15 | 广东烨嘉光电科技股份有限公司 | A kind of VR lens systems of adjustable focus |
| CN110941090A (en) * | 2018-09-21 | 2020-03-31 | 苹果公司 | Electronic device with adjustable lens |
-
2021
- 2021-09-29 CN CN202111155140.2A patent/CN114002765A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661156A (en) * | 2008-08-26 | 2010-03-03 | 中国科学院西安光学精密机械研究所 | Method for realizing zoom optical system without moving lens group and optical system |
| CN206114931U (en) * | 2016-09-28 | 2017-04-19 | 张岩 | Lens that can zoom |
| CN207502823U (en) * | 2017-11-02 | 2018-06-15 | 广东烨嘉光电科技股份有限公司 | A kind of VR lens systems of adjustable focus |
| CN110941090A (en) * | 2018-09-21 | 2020-03-31 | 苹果公司 | Electronic device with adjustable lens |
Non-Patent Citations (2)
| Title |
|---|
| 约翰舒伯克: "《流体机械》", 31 January 2020 * |
| 郁道银: "《工程光学》", 30 May 1995 * |
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Application publication date: 20220201 |