CN113864732A - Uniform light emitting optical system and warning lamp - Google Patents
Uniform light emitting optical system and warning lamp Download PDFInfo
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- CN113864732A CN113864732A CN202111196775.7A CN202111196775A CN113864732A CN 113864732 A CN113864732 A CN 113864732A CN 202111196775 A CN202111196775 A CN 202111196775A CN 113864732 A CN113864732 A CN 113864732A
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- inner lens
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- 230000003287 optical effect Effects 0.000 title claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000007 visual effect Effects 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
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/30—Hazard lights
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
An optical system and a warning light with uniform light emission sequentially comprise an LED lamp strip, a first inner lens and a second inner lens according to a light emitting direction; the LED lamp strip comprises a substrate and a plurality of LED light sources arranged on the LED substrate, wherein the LED light sources are equidistantly arranged along the length direction of the LED substrate; the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, light rays emitted by the LED light source are converged through the first inner lens to form light beams, the reverse extension lines of the light beams are converged at one point behind the LED light source, a virtual light source focus F is reconstructed, and the virtual focus F is used as the focus of the second inner lens; the base planes of the inner surface and the outer surface of the second inner lens are formed by free-form surfaces, and the second inner lens obtains a larger light source focal length through a virtual focus F reconstructed by the first inner lens. The light-emitting regulation requirement of the warning lamp is met, the size is small, and the light-emitting is uniform.
Description
Technical Field
The invention relates to an optical system, in particular to a uniform light-emitting optical system and a warning lamp.
Background
The vehicle warning lamp is used for reminding surrounding pedestrians and vehicles of paying attention to the road surface condition, is required to have a wide light distribution angle and strong illumination intensity, and has the requirement of miniaturization of the warning lamp in the market. Present LED lamp accessible is equipped with different lens and reflector and realizes above-mentioned performance, like the miniaturized LED warning light that china utility model CN205332081U disclosed, this utility model reflector team LED chip carries out the grading to add the optical stripe on the face guard, make the light-emitting of LED chip accord with the requirement of warning light. The technical defects are as follows: it is still necessary to provide a reflector, which is bulky. In addition, the ultrathin warning lamp, such as the ultrathin warning lamp with the publication number of CN207621935U, includes a base, an LED chip mounted on the base, a backing plate mounted between the base and the LED chip, a lens covering the LED chip, and a cover plate for fixing the lens on the base; the emergent surface of the lens is a plane, the incident surface comprises a first strip-shaped incident surface, a second incident surface surrounding the periphery of the first incident surface and a third incident surface surrounding the periphery of the second incident surface, the section of the first incident surface is arc-shaped, the second incident surface and the third incident surface are combined to form a saw-tooth-shaped section, and the ultrathin warning lamp is reduced in size but only has one layer of lens, so that uniform light emitting cannot be realized.
Disclosure of Invention
The invention aims to provide a uniform light-emitting optical system and a warning lamp, which meet the requirements of light emission regulations of the warning lamp, have small volume and uniform light emission.
In order to solve the technical problems, the technical scheme of the invention is as follows: an optical system capable of emitting light uniformly comprises an LED lamp strip, a first inner lens and a second inner lens in sequence according to a light emitting direction; the LED lamp strip comprises a substrate and a plurality of LED light sources arranged on the LED substrate, wherein the LED light sources are equidistantly arranged along the length direction of the LED substrate; the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, light rays emitted by the LED light source are converged through the first inner lens to form light beams, the reverse extension lines of the light beams are converged at one point behind the LED light source, a virtual light source focus F is reconstructed, and the virtual focus F is used as the focus of the second inner lens; the base planes of the inner surface and the outer surface of the second inner lens are formed by free-form surfaces, and the second inner lens obtains a larger light source focal length through a virtual focus F reconstructed by the first inner lens. The second inner lens obtains a larger light source focal length through the virtual focus F reconstructed by the first inner lens without increasing the whole length of the optical system, and the LED light source is a Lambert body light source and has the characteristics of high central angle light intensity and low edge angle light intensity; in addition, the upper and lower angles of the light spot are reduced in a refraction mode through the first inner lens, and the requirements of warning lamp laws and regulations are met; the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, so that more light rays can enter the lens, and the lighting effect is improved.
As an improvement, the first inner lens is a plano-convex lens, a biconvex lens or an inner concave convex lens composed of free curved surfaces.
As a refinement, the second inner lens is a biconvex lens.
As an improvement, the inner surface and the outer surface of the second inner lens are provided with a microstructure composed of a plurality of free curved surfaces.
As a refinement, the microstructures comprise maize-like particles, transverse/vertical stripes or fly-eye lenses.
As an improvement, the first inner lens and the second inner lens are in a ring shape or a strip shape.
As a refinement, the shape of the first inner lens and the second inner lens can be formed by stretching or scanning.
As an improvement, the LED light source is an LED device which comprises a support and a wafer arranged in the support.
In order to solve the above technical problem, another technical solution of the present invention is: a warning lamp comprises a uniform light emitting optical system, and sequentially comprises an LED lamp strip, a first inner lens and a second inner lens in the light emitting direction, wherein the first inner lens and the second inner lens are annular; the LED lamp strip comprises a substrate and a plurality of LED light sources arranged on the LED substrate, wherein the LED light sources are equidistantly arranged along the length direction of the LED substrate; the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, light rays emitted by the LED light source are converged through the first inner lens to form light beams, the reverse extension lines of the light beams are converged at one point behind the LED light source, a virtual light source focus F is reconstructed, and the virtual focus F is used as the focus of the second inner lens; the base planes of the inner surface and the outer surface of the second inner lens are formed by free-form surfaces, and the second inner lens obtains a larger light source focal length through a virtual focus F reconstructed by the first inner lens. The second inner lens obtains a larger light source focal length through the virtual focus F reconstructed by the first inner lens without increasing the whole length of the optical system, and the LED light source is a Lambert body light source and has the characteristics of high central angle light intensity and low edge angle light intensity; in addition, the upper and lower angles of the light spot are reduced in a refraction mode through the first inner lens, and the requirements of warning lamp laws and regulations are met; the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, so that more light rays can enter the lens, and the lighting effect is improved.
As an improvement, the LED lamp strip is a flexible lamp strip or a ring-shaped structure formed by surrounding a plurality of LED substrates.
Compared with the prior art, the invention has the following beneficial effects:
1. the second inner lens obtains a larger light source focal length through the virtual focus F reconstructed by the first inner lens without increasing the whole length of the optical system, and the LED light source is a Lambert body light source and has the characteristics of high central angle light intensity and low edge angle light intensity;
2. the upper and lower angles of the light spot are reduced by the refraction of the first inner lens, so that the requirements of warning lamp regulations are met;
3. the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, so that more light rays can enter the lens, and the lighting effect is improved;
4. the light rays converged by the first inner lens are combined by utilizing the microstructures on the inner surface and the outer surface of the second inner lens to realize the diffusion and mixing processes of the light rays, so that the uniformly luminous warning lamp is obtained;
5. the first inner lens and the second inner lens can form lens groups of different shapes in modes of stretching, scanning and the like, the quantity of the LED light sources is freely defined, and the uniform light emitting and light distribution design of the warning lamp is realized.
Drawings
Fig. 1 is a perspective view of an optical system.
Fig. 2 is a front view of the optical system.
Fig. 3 is an end view of the optical system.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, a warning light includes uniform light emitting optical system, includes LED lamp area 1, first inner lens 2 and second inner lens 3 according to the light-emitting direction in proper order, lens 3 is the annular form in first inner lens 2 and the second, LED lamp area 1 is flexible lamp area or the annular column structure that is enclosed by a plurality of LED base plates.
The LED lamp strip 1 comprises an LED substrate 11 and a plurality of LED light sources 12 arranged on the LED substrate 11, wherein the LED light sources 12 are equidistantly arranged along the length direction of the LED substrate 11, and the center distance between every two adjacent LED light sources 12 is 7.0-7.5 mm; the LED light source 12 is an LED device that includes a frame and a wafer disposed within the frame.
The first inner lens 2 is a plano-convex lens, a biconvex lens or an inner concave convex lens formed by free curved surfaces, the plano-convex lens is adopted in the embodiment, the plane faces the LED light source 12, and the convex surface of the first inner lens is provided with the second inner lens 3; the distance between the inner surface of the first inner lens 2 and the center of the LED light source 12 is 3-5mm, so that more light rays can enter the lens, and the lighting effect is improved; light emitted by the LED light source 12 is converged by the first inner lens 2 to form a light beam, the reverse extension line of the light beam is converged at one point behind the LED light source 12, and a virtual light source focus F is reconstructed and serves as a focus of the second inner lens 3.
The base planes of the inner surface and the outer surface of the second inner lens 3 are composed of free-form surfaces, and the inner surface and the outer surface of the second inner lens can be set into microstructures 31 composed of a plurality of small free-form surfaces as required, such as corn-shaped particles, horizontal/vertical stripes, fly-eye lenses and the like, so that light with high light intensity (cd) at a central angle is refracted towards a large angle, and the light intensity at the large angle is improved; the second inner lens 3 of the present embodiment is a biconvex lens, and the virtual focal point F reconstructed by the first inner lens 2 by the second inner lens 3 obtains a larger focal length of the light source.
The first inner lens 2 and the second inner lens 3 are in a ring shape or a strip shape, and the shapes of the first inner lens 2 and the second inner lens 3 can be formed in a stretching or scanning mode; the LED lamp strip 1 is a flexible lamp strip or an annular structure formed by surrounding a plurality of LED substrates.
The second inner lens 3 obtains a larger light source focal length through the virtual focus F reconstructed by the first inner lens 2 without increasing the whole length of the optical system, and because the LED light source 12 is a Lambert light source and has the characteristics of high central angle light intensity and low edge angle light intensity, when the distance between the light source and the light-emitting surface is enlarged, the light from the light-emitting surface has uniform visual effect and inconspicuous light-dark change, the optical system of the invention emits light more uniformly; in addition, the upper and lower angles of the light spot are reduced in a refraction mode through the first inner lens 2, and the requirements of warning lamp regulations are met; the distance between the inner surface of the first inner lens 2 and the center of the LED light source 12 is 3-5mm, so that more light rays can enter the lens, and the lighting effect is improved.
Claims (10)
1. A uniform light emission optical system, characterized by: the LED lamp strip comprises an LED lamp strip, a first inner lens and a second inner lens in sequence according to a light emitting direction;
the LED lamp strip comprises a substrate and a plurality of LED light sources arranged on the LED substrate, wherein the LED light sources are equidistantly arranged along the length direction of the LED substrate;
the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, light rays emitted by the LED light source are converged through the first inner lens to form light beams, the reverse extension lines of the light beams are converged at one point behind the LED light source, a virtual light source focus F is reconstructed, and the virtual focus F is used as the focus of the second inner lens;
the base planes of the inner surface and the outer surface of the second inner lens are formed by free-form surfaces, and the second inner lens obtains a larger light source focal length through a virtual focus F reconstructed by the first inner lens.
2. A homogeneous luminous optical system according to claim 1, wherein: the first inner lens is a plano-convex lens, a biconvex lens or an inner concave convex lens formed by free curved surfaces.
3. A homogeneous luminous optical system according to claim 1, wherein: the second inner lens is a biconvex lens.
4. A homogeneous luminous optical system according to claim 1, wherein: the inner surface and the outer surface of the second inner lens are provided with microstructures consisting of a plurality of free-form surfaces.
5. A homogeneous luminous optical system according to claim 4, wherein: the microstructures include corn-like particles, horizontal/vertical stripes, or fly-eye lenses.
6. A homogeneous luminous optical system according to claim 1, wherein: the first inner lens and the second inner lens are in a ring shape or a strip shape.
7. A homogeneous luminous optical system according to claim 6, wherein: the shape of the first inner lens and the second inner lens can be formed by a stretching or scanning manner.
8. A homogeneous luminous optical system according to claim 1, wherein: the LED light source is an LED device and comprises a support and a wafer arranged in the support.
9. A warning light, includes the even luminous optical system, its characterized in that: the LED lamp comprises an LED lamp strip, a first inner lens and a second inner lens in sequence according to a light emitting direction, wherein the first inner lens and the second inner lens are annular;
the LED lamp strip comprises a substrate and a plurality of LED light sources arranged on the LED substrate, wherein the LED light sources are equidistantly arranged along the length direction of the LED substrate;
the distance between the inner surface of the first inner lens and the center of the LED light source is 3-5mm, light rays emitted by the LED light source are converged through the first inner lens to form light beams, the reverse extension lines of the light beams are converged at one point behind the LED light source, a virtual light source focus F is reconstructed, and the virtual focus F is used as the focus of the second inner lens;
the base planes of the inner surface and the outer surface of the second inner lens are formed by free-form surfaces, and the second inner lens obtains a larger light source focal length through a virtual focus F reconstructed by the first inner lens.
10. A warning light as claimed in claim 9, wherein: the LED lamp strip is a flexible lamp strip or an annular structure formed by surrounding a plurality of LED substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111196775.7A CN113864732A (en) | 2021-10-14 | 2021-10-14 | Uniform light emitting optical system and warning lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111196775.7A CN113864732A (en) | 2021-10-14 | 2021-10-14 | Uniform light emitting optical system and warning lamp |
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| Publication Number | Publication Date |
|---|---|
| CN113864732A true CN113864732A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111196775.7A Pending CN113864732A (en) | 2021-10-14 | 2021-10-14 | Uniform light emitting optical system and warning lamp |
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| Country | Link |
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| CN (1) | CN113864732A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014038289A1 (en) * | 2012-09-05 | 2014-03-13 | 山下電装株式会社 | Solar simulator |
| CN207065475U (en) * | 2017-07-17 | 2018-03-02 | 广州达森灯光股份有限公司 | A kind of LED beam condensing units |
| CN212456699U (en) * | 2020-07-14 | 2021-02-02 | 常州星宇车灯股份有限公司 | Overtaking auxiliary warning lamp |
-
2021
- 2021-10-14 CN CN202111196775.7A patent/CN113864732A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014038289A1 (en) * | 2012-09-05 | 2014-03-13 | 山下電装株式会社 | Solar simulator |
| CN207065475U (en) * | 2017-07-17 | 2018-03-02 | 广州达森灯光股份有限公司 | A kind of LED beam condensing units |
| CN212456699U (en) * | 2020-07-14 | 2021-02-02 | 常州星宇车灯股份有限公司 | Overtaking auxiliary warning lamp |
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