CN216361353U - Superlens-based vehicle lighting system - Google Patents
Superlens-based vehicle lighting system Download PDFInfo
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- CN216361353U CN216361353U CN202123429895.5U CN202123429895U CN216361353U CN 216361353 U CN216361353 U CN 216361353U CN 202123429895 U CN202123429895 U CN 202123429895U CN 216361353 U CN216361353 U CN 216361353U
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- 230000001419 dependent effect Effects 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 2
- 230000004075 alteration Effects 0.000 abstract description 6
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000002061 nanopillar Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 239000005350 fused silica glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005308 flint glass Substances 0.000 description 1
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- 229950005630 nanofin Drugs 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model relates to the technical field of superlenses. A superlens based vehicle lighting system comprising: the super lens device comprises a substrate and at least one super lens structure unit arranged on the substrate, wherein the super lens structure unit is composed of a nano structure; wherein, in the light propagation direction, the light source is arranged at the upstream of the super lens device, and the length of the light source is more than or equal to the focal depth of the super lens device. The vehicle lighting system formed by the super lens device can avoid the influence of chromatic aberration on lighting, and has the advantages of light weight, easy integration into an array and simple structure.
Description
Technical Field
The utility model relates to the technical field of superlenses, in particular to a vehicle lighting system based on a superlens.
Background
At present, most of vehicle lamps, especially vehicle lamps, are reflective lamps or projection lamps, wherein the reflective lamps reflect light sources out by using a reflective bowl to illuminate the front; the projection type car light projects light of a bulb to a far place through light gathered by the convex lens.
The two methods have the problems of complicated and heavy structure.
SUMMERY OF THE UTILITY MODEL
The utility model has the beneficial effects that: the vehicle lighting system based on the super lens is simple in structure and light.
The present invention provides a superlens based vehicle lighting system comprising:
the length L of the light source is larger than or equal to the focal depth delta of the super-lens device, the focal depth delta is the difference between the maximum focal depth max (f (lambda)) and the minimum focal depth min (f (lambda)), namely the length and the focal depth of the light source satisfy the following formula:
L≥Δ＝max(f(λ))-min(f(λ))；
the super lens device comprises a substrate and at least one super lens structure unit arranged on the substrate, wherein the super lens structure unit is composed of a nano structure;
wherein the light source is disposed upstream of the superlens device in a light propagation direction.
In a possible embodiment, the number of the superlens structure units is multiple, and the multiple superlens structure units are arranged in an array.
In a possible embodiment, the superlens structure units of the plurality of superlens structure units have the same structure.
In a possible embodiment, all superlens structure units of the plurality of superlens structure units have different structures.
In a possible embodiment, some superlens structure units in the plurality of superlens structure units have different structures.
In a possible embodiment, a brightness sensor and/or a color temperature sensor are also included.
In a possible embodiment, the light source is an LED light source, for example a tricolor LED light source or an LED light source emitting white light, or a gas discharge lamp.
In a possible embodiment, the superlens structure unit is square or regular hexagon, and each vertex and central position of the superlens structure unit is provided with at least one nano structure.
In a possible embodiment, the nanostructure is a polarization dependent structure or a polarization independent structure.
In a possible embodiment, the polarization-dependent structures comprise nanofins or nanoellipsoids and the polarization-independent structures comprise nanocylinders or nanosquarries.
In a possible embodiment, the substrate is a quartz substrate.
The utility model provides a vehicle lighting system based on a super lens.A light source and a super lens device are arranged at a lighting position of a vehicle, and the length of the light source is longer than the focal depth of the super lens device, so that light transmitted through the super lens device can be used as light for lighting the vehicle, such as white light. The vehicle lighting system formed by the superlens device has the advantages of light weight, easy integration into an array and simple structure.
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the utility model, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the utility model.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic view of a superlens based vehicle lighting system of the present invention, wherein the arrows are the light propagation directions;
FIG. 2 is a schematic view of a superlens structure element distribution of a superlens-based vehicle lighting system of the present invention;
FIG. 3 is a schematic view of a superlens structure element of a superlens-based vehicle lighting system of the present invention, wherein:
FIG. 3A is a schematic diagram of a regular hexagonal structural unit;
FIG. 3B is a schematic diagram of a square structural unit;
FIG. 3C is a schematic diagram of a nanopillar in a building block;
FIG. 3D is a schematic diagram of nanofins in a building block;
fig. 4 is a schematic view of an embodiment of a light source for a superlens-based automotive illumination lamp according to the present invention.
Reference numerals:
1. a light source; 2. a substrate; 3. a superlens structure unit; 4. a red light area; 5. a green area; 6. the blue light region.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. The features of the following examples and embodiments may be combined with each other without conflict.
The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings and exemplary embodiments.
It is noted that the vehicles of the present application may include land vehicles, water vehicles, and air vehicles, wherein land vehicles may include, inter alia, automobiles, motorcycles, bicycles, and the like. In the following, the vehicle lighting system of the present application is described in detail by taking an automobile as an example, however, it is to be understood that the present invention is not limited to the specific embodiments, but may be modified arbitrarily by those skilled in the art within the scope of the present invention.
In addition, the vehicle lighting system of the present invention can be widely used for lighting or indicating light sources inside and outside a vehicle, such as headlamps (including high beam, low beam, fog lamp, etc.), tail lamps, turn signals, back lamps, and the like.
Referring to fig. 1 to 4, in the present embodiment, a vehicle lighting system based on a superlens includes a light source and a superlens device.
The light source 1 may be a light source 1 that emits light when energized, and for example, the light source 1 may be an LED light source or a gas discharge lamp.
The light source 1 may be disposed at the front, rear, side, top and bottom lamp positions of a vehicle as required, wherein the vehicle may include two-wheel vehicles, three-wheel vehicles, four-wheel vehicles, and the like, such as motorcycles, agricultural vehicles, and automobiles.
As shown in fig. 1, the superlens device is disposed in the propagation direction of the light emitted from the light source 1, and the length of the light source 1 is greater than or equal to the focal depth of the superlens device, so that the chromatic aberration generated by the superlens does not affect the final lighting effect after the light passes through the superlens device, for example, the light emitted from the light source 1 uniformly illuminates forward after passing through the superlens device.
The superlens device can comprise a substrate 2 and at least one superlens structure unit 3 arranged on the substrate 2, wherein the superlens structure unit 3 is composed of nano structures.
The substrate 2 is an optical fiber that can transmit an operating wavelength band. The light in the working band can be visible light, and the wavelength is generally 780-400 nm. The material of the substrate 2 may be one of fused silica, crown glass, flint glass, and sapphire.
The superlens structure unit 3 is composed of a nanostructure, and light emitted from the light source 1 is transmitted through the superlens structure unit 3 and the substrate 2 and irradiated forward.
In the light propagation direction, the light source 1 is arranged at the upstream of the super lens device, and the light source 1 and the super lens device are separated by a certain distance, wherein the separated distance can be determined according to the length of the light source 1 and the incident light of the super lens, so that the light is prevented from chromatic aberration after passing through the super lens device.
Through changing the car light structure of vehicle, can replace traditional lens with super lens device and be used for car headlight, can alleviate car headlight's weight, simple structure.
As shown in fig. 2, in one embodiment, the number of the superlens structure units 3 is plural, and the plural superlens structure units 3 may be arranged in an array.
It should be noted that the superlens structure unit 3 arranged in an array may be a layer of sub-wavelength artificial nanostructure film, and incident light is modulated by the superlens structure unit 3 arranged in an array. The superlens structure unit 3 comprises a full-dielectric or plasma nano antenna, and can directly adjust and control the phase, amplitude, polarization and other characteristics of light.
The superlens structure units 3 may have the same structure, different structures, or partially different structures as required.
As shown in fig. 3, for example, when the superlens structure units 3 arranged in an array may be square or regular hexagon, the superlens structure units 3 arranged in an array may be all square or regular hexagon, or may be staggered square or regular hexagon, or may form an array structure in a manner that one region is square and the other region is regular hexagon. It should be understood that the actual product may have the nanostructure missing at the edge of the superlens due to the limitation of the superlens shape, so that it does not satisfy the complete hexagon or square. Specifically, as shown in fig. 2, the nanostructures are regularly arranged, and a plurality of nanostructures are arranged in an array to form the superlens structure unit 3.
If the superlens structure unit 3 is a square, at least one nanostructure is disposed at each vertex and center of the square, as shown in fig. 3B. Specifically, a central nanostructure is included, which is surrounded by 4 peripheral nanostructures at equal distances from the central nanostructure, forming a square.
As shown in fig. 3A, if the superlens structure unit 3 is a regular hexagon, at least one nanostructure is disposed at each vertex and center of the regular hexagon. Specifically, the nano-structure comprises a central nano-structure, wherein 6 peripheral nano-structures which are equidistant from the central nano-structure are surrounded, and the peripheral nano-structures are uniformly distributed on the circumference to form a regular hexagon, which can also be understood as the combination of regular triangles formed by a plurality of nano-structures.
As shown in fig. 3, in one embodiment, the nanostructures are polarization dependent structures or polarization independent structures. The polarization-dependent structures comprise nanofins or nanoellipsoids, and as shown in fig. 3C and 3D, the polarization-independent structures comprise nanocylinders or nanosquarries.
It should be noted that, the phase required by the nanostructure at different wavelengths can be searched for the nanostructure with the closest phase in the nanostructure database.
The nanostructure may be an all-dielectric structure, with high transmittance in the operating band, and the selectable materials include: titanium oxide, silicon nitride, fused silica, aluminum oxide, gallium nitride, gallium phosphide, amorphous silicon, crystalline silicon, hydrogenated amorphous silicon, and the like.
As shown in fig. 3D, in one embodiment, air may be used as a space between adjacent nanostructures and/or between the nanostructures and the substrate 2 and/or on top of the nanostructures, and other materials may be filled to protect the nanostructures.
The nano-structure can be a polarization-dependent structure, such as a nano-fin, a nano-elliptic cylinder and the like, and the structure exerts a geometric phase on incident light; the nanostructure may also be a polarization independent structure, such as a nanocylinder or a nanocylinder, which imparts a propagation phase to the incident light.
In one embodiment, the superlens-based vehicle lighting system further comprises a sensor for detecting the brightness of the light source and/or the brightness of the external environment. The sensor may be connected to a control device of the vehicle to control the brightness of the light emitted by the light source. For example, when the day and the black alternate, or when the shade day, etc., the brightness or the color temperature detected by the sensor is lower than the preset threshold, the control device may automatically turn on the light source 1; or the light output by the light source 1 is detected by the sensor, and if the detected light brightness does not reach the threshold value, the sensor can send a signal to the control device, and the control device can improve the brightness of the light output by the light source 1.
It should be noted that the control device is a conventional device used for controlling a vehicle on the vehicle, and the illustration in this embodiment is for convenience of understanding the coordination relationship between the sensor and the light source 1, and the control device is not modified in this embodiment. In addition, the number of the sensors may be plural, and the sensors may be disposed at different positions of the vehicle according to different needs so as to perform different functions, for example, the sensors may include a light sensor for detecting the ambient brightness and/or the brightness of the light source or a color temperature sensor for detecting the color temperature of the light output by the light source.
In the vehicle lighting system based on the super lens, different wavelengths are mapped in a one-to-one correspondence mode for the focal length f and the wavelength lambda of the super lens device, and the range formed by all the focal lengths is called the focal depth delta of the super lens.
It should be noted that the focal depth calculation formula is:
Δ＝max(f(λ))-min(f(λ)) (1)
wherein, Delta is the focal depth; max (f (λ)) is the maximum depth of focus of the superlens arrangement; min (f (λ)) is the minimum depth of focus of the superlens device.
The length of the light source 1 is larger than or equal to the difference between the maximum focal depth and the minimum focal depth, so that the chromatic aberration problem of the super lens can be avoided, and light with different wavelengths can be uniformly irradiated.
When the length of the light source 1 is L, if L is larger than or equal to delta, the following formula is used for calculating:
L≥Δ＝max(f(λ))-min(f(λ)) (2)
the chromatic aberration in light can be avoided after the light emitted by the light source 1 passes through the super-lens device by the formula (2).
For example, the situation that different wavelengths are inversely proportional to the focal length and the wavelength of the superlens device, i.e. the superlens has negative chromatic aberration, the longer the wavelength of the incident light, the shorter the focal length, i.e. the different focal positions of the incident light with different wavelengths on the x-axis are different, and R can be consideredNIs the radius of the superlens, N is RNThe number of nanostructures in the radius is determined by the following formula:
the focal length is calculated by
The longest wavelength and the shortest wavelength of the incident light are calculated by formula 1, and the longest wavelength and the shortest wavelength are calculated by the following formulas:
incident longest wavelength λmaxHas a focal length of
Incident shortest wavelength λminHas a focal length of
The position difference on the axis obtained by subtracting the shortest wavelength formula 3 from the longest wavelength formula 2 is as follows:
the position difference of the longest wavelength and the shortest wavelength on the axis is as follows:
according to the above embodiments, a superlens based vehicle lighting system is exemplarily illustrated:
the proposal provides an embodiment of the automobile illuminating lamp based on the super lens, the side length of the super lens structure unit 3 is 2mm, namely RNThe substrate 2 is made of quartz material and has an amorphous silicon nano-pillar structure, the superlens structure units 3 are arranged in a regular hexagon with a period of 500nm, the height of the nano-pillar is 600nm, and N is 2000.
As shown in fig. 4, the light source is an LED illumination source with three colors of red, green and blue, wherein,
Blue 6 wavelength, λblue＝470nm。
The calculation is made by the following formula:
when the thickness of the three-color LED illumination source is larger than 2.64mm, the light with different colors emitted by the light source can be changed into uniform white light to be emitted after passing through the super-lens device.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A superlens based vehicle lighting system, comprising:
a light source having a length L equal to or greater than a focal depth Δ of the superlens device, the focal depth Δ being a difference between a maximum focal depth max (f (λ)) and a minimum focal depth min (f (λ)), the light source length and the focal depth satisfying the following formula:
L≥Δ＝max(f(λ))-min(f(λ))；
the super lens device comprises a substrate and at least one super lens structure unit arranged on the substrate, wherein the super lens structure unit is composed of a nano structure;
wherein the light source is disposed upstream of the superlens device in a light propagation direction.
2. The superlens-based vehicle lighting system of claim 1, wherein the number of superlens structure units is plural, and the plural superlens structure units are arranged in an array.
3. The superlens-based vehicle lighting system of claim 2, wherein the superlens structural units of the plurality of superlens structural units are identically structured.
4. The superlens-based vehicle lighting system of claim 2, wherein the superlens structural units of the plurality of superlens structural units are of non-identical construction.
5. The superlens-based vehicle lighting system of claim 2, wherein some of the superlens structure units in the plurality of superlens structure units are of non-identical construction.
6. The superlens-based vehicle lighting system of claim 1, further comprising a brightness sensor and/or a color temperature sensor.
7. The superlens-based vehicle lighting system of claim 1, wherein the light source is an LED light source or a gas discharge lamp.
8. A superlens-based vehicle lighting system according to any one of claims 1-7, wherein the superlens structural units are square or regular hexagonal, and at least one nanostructure is disposed at each vertex and center of the superlens structural units.
9. The superlens-based vehicle lighting system of claim 8, wherein the nanostructure is a polarization-dependent structure or a polarization-independent structure.
10. The superlens-based vehicle lighting system of claim 9, wherein the polarization-dependent structures comprise nanofins or nanoellipsoids and the polarization-independent structures comprise nanocylinders or nanosquares.
11. The superlens-based vehicle lighting system of claim 8, wherein the substrate is a quartz substrate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966916A (en) * | 2022-06-27 | 2022-08-30 | 清华大学深圳国际研究生院 | Polarization-independent super-resolution super-structured lens and manufacturing method thereof |
| US11927769B2 (en) | 2022-03-31 | 2024-03-12 | Metalenz, Inc. | Polarization sorting metasurface microlens array device |
| US11978752B2 (en) | 2019-07-26 | 2024-05-07 | Metalenz, Inc. | Aperture-metasurface and hybrid refractive-metasurface imaging systems |
| US11988844B2 (en) | 2017-08-31 | 2024-05-21 | Metalenz, Inc. | Transmissive metasurface lens integration |
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2021
- 2021-12-31 CN CN202123429895.5U patent/CN216361353U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11988844B2 (en) | 2017-08-31 | 2024-05-21 | Metalenz, Inc. | Transmissive metasurface lens integration |
| US11978752B2 (en) | 2019-07-26 | 2024-05-07 | Metalenz, Inc. | Aperture-metasurface and hybrid refractive-metasurface imaging systems |
| US11927769B2 (en) | 2022-03-31 | 2024-03-12 | Metalenz, Inc. | Polarization sorting metasurface microlens array device |
| CN114966916A (en) * | 2022-06-27 | 2022-08-30 | 清华大学深圳国际研究生院 | Polarization-independent super-resolution super-structured lens and manufacturing method thereof |
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