CN108644739B - Far and near light multifocal lens and module - Google Patents
Far and near light multifocal lens and module Download PDFInfo
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- CN108644739B CN108644739B CN201810371881.6A CN201810371881A CN108644739B CN 108644739 B CN108644739 B CN 108644739B CN 201810371881 A CN201810371881 A CN 201810371881A CN 108644739 B CN108644739 B CN 108644739B
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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
- F21S41/25—Projection lenses
- F21S41/265—Composite lenses; Lenses with a patch-like shape
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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
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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
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
-
- 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
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
-
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A high beam and low beam multifocal lens and module, wrap the module and include the low beam LED, low beam reflector, high beam LED, high beam reflector, multifocal lens and near beam light barrier corresponding to high beam LED that correspond to low beam LED, multifocal lens include exit surface and incident surface, the said incident surface includes the first light source incident surface group and second light source incident surface group, the said first light source incident surface group includes at least one first incident surface, the first incident surface is the level and the focus of the first incident surface is F1, the first light source light forms the collimated light to shoot out after passing the lens; the second light source incidence surface group comprises at least one second incidence surface, the second incidence surface is a free-form surface, the focal point of the second incidence surface is F2, and the light of the second light source forms collimated light after passing through the lens to be emitted; the focus F1 and the focus F2 are on the same optical axis and the distance therebetween is Δ F. The invention separates the light sources and solves the problem of heat concentration.
Description
Technical Field
The invention relates to a car lamp, in particular to a far and near light multifocal lens and a module.
Background
In the technical field of lighting devices, particularly in the technical field of automotive lighting, in order to realize different lighting in different driving environments, the conventional lighting fixtures generally include high beam lighting and low beam lighting, and as for the high beam, the high beam has a wide irradiation range and a long irradiation distance, which can improve a wide visible area for a driver. An existing far and near light integrated vehicle lamp generally comprises an integrated light source, a lens and a light barrier, and forms a low beam type or a high beam type by switching the light barrier, such as a far and near light integrated vehicle lamp with chinese patent publication No. 107013868, which comprises a light source, a projection part and a light shielding part, wherein the light shielding part is rotatably or movably arranged relative to the light source or the projection part, so that the light shielding part at least has a first position and a second position, when the light shielding part is located at the first position, part of light rays emitted by the light source are shielded by the light shielding part, and then form a lighting spot of the low beam lamp after passing through the projection part; when the light shielding part is located at the second position, the light shielding part does not shield the light rays emitted by the light source, and the light rays emitted by the light source form illumination light spots of the high beam after passing through the projection part. The light source of the vehicle lamp is concentrated, so that the heat on the substrate is concentrated and is not easy to dissipate.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high beam and low beam multifocal lens and a module, wherein a low beam light source is separated from a high beam light source, so that heat concentration is reduced, and heat dissipation is facilitated; the structure is simple.
In order to solve the technical problems, the technical scheme of the invention is as follows: a distance and near light multifocal lens comprises an exit surface and an incident surface, wherein the incident surface comprises a first light source incident surface group and a second light source incident surface group, the first light source incident surface group comprises at least one first incident surface, the first incident surface is a plane, the focus of the first incident surface is F1, and first light source light rays form collimated light rays after passing through the lens and then are emitted; the second light source incidence surface group comprises at least one second incidence surface, the second incidence surface is a free-form surface, the focal point of the second incidence surface is F2, and the light of the second light source forms collimated light after passing through the lens to be emitted; the focus F1 and the focus F2 are on the same optical axis and the distance therebetween is Δ F. The invention utilizes the special-shaped lens to form a plurality of incident surfaces, different incident surfaces correspond to different light sources, the corresponding light sources are different in position due to different focuses of different incident surfaces, and the far and near light sources are separated to solve the problem of heat concentration; through far and near light source switching cooperation different lens incident planes to form low beam light type and far beam light type, need not the upset baffle, overall structure is simpler, in addition, owing to save movable part, whole structure installation accuracy is higher, and the light type is more reasonable.
As a refinement, the exit face is aspheric.
As an improvement, the lens is made of plastic, PMMA or PC.
As an improvement, when the light passing through the focus F2 enters the second incident surface, a refraction occurs, and the opposite extensions of the refracted light converge and converge to form a virtual focus F3, and the virtual focus F3 approaches the focus F1.
The value of Δ f is 2.5mm-10mm as an improvement.
As a modification, the first light source incidence surface group comprises a first incidence surface, and the second light source incidence surface group comprises a second incidence surface; the first incident surface is located on the lower half of the inner side of the lens and the second incident surface is located on the upper half of the inner side of the lens, or the first incident surface is located on the upper half of the inner side of the lens and the second incident surface is located on the lower half of the inner side of the lens.
As a modification, the first light source incidence surface group comprises one first incidence surface, and the second light source incidence surface group comprises two second incidence surfaces; the first incidence plane is positioned in the middle part of the inner side of the lens, and the two second incidence planes are respectively positioned on the upper side and the lower side of the first incidence plane.
As a modification, the first light source incidence surface group comprises two first incidence surfaces, and the second light source incidence surface group comprises one second incidence surface; the second incidence plane is positioned in the middle part of the inner side of the lens, and the two first incidence planes are respectively positioned on the upper side and the lower side of the second incidence plane.
In order to solve the above technical problem, another technical solution of the present invention is: a distance light module comprises a near light LED, a near light reflector corresponding to the near light LED, a distance light reflector corresponding to the distance light LED, a multi-focus lens and a near light baffle plate, wherein the multi-focus lens comprises an exit surface and an incidence surface, the incidence surface comprises a first light source incidence surface group and a second light source incidence surface group, the first light source incidence surface group comprises at least one first incidence surface, the first incidence surface is a plane, the focus of the first incidence surface is F1, and the first light source light forms collimated light after passing through the lens to be emitted; the second light source incidence surface group comprises at least one second incidence surface, the second incidence surface is a free-form surface, the focal point of the second incidence surface is F2, and the light of the second light source forms collimated light after passing through the lens to be emitted; the focus F1 and the focus F2 are on the same optical axis and the distance therebetween is Δ F. The invention utilizes the special-shaped lens to form a plurality of incident surfaces, different incident surfaces correspond to different light sources, the corresponding light sources are different in position due to different focuses of different incident surfaces, and the far and near light sources are separated to solve the problem of heat concentration; through far and near light source switching cooperation different lens incident planes to form low beam light type and far beam light type, need not the upset baffle, overall structure is simpler, in addition, owing to save movable part, whole structure installation accuracy is higher, and the light type is more reasonable.
As a modification, the first light source incidence surface group comprises a first incidence surface, and the second light source incidence surface group comprises a second incidence surface; the first incidence plane is positioned at the lower half part of the inner side of the lens, and the second incidence plane is positioned at the upper half part of the inner side of the lens; the low-beam LED emits light vertically upwards, the light is converged to a focus F1 through the low-beam reflector, the low-beam light barrier is arranged near the focus F1, and the light is emitted from the lower half part of the lens to form a low-beam light; the high beam LED emits light vertically downward, and the light is converged to the focal point F2 by the high beam reflector, and the light is emitted from the upper half of the lens to form a high beam pattern.
Compared with the prior art, the invention has the following beneficial effects:
the invention utilizes the special-shaped lens to form a plurality of incident surfaces, different incident surfaces correspond to different light sources, the corresponding light sources are different in position due to different focuses of different incident surfaces, and the far and near light sources are separated to solve the problem of heat concentration; through far and near light source switching cooperation different lens incident planes to form low beam light type and far beam light type, need not the upset baffle, overall structure is simpler, in addition, owing to save movable part, whole structure installation accuracy is higher, and the light type is more reasonable.
Drawings
FIG. 1 is an optical path diagram of example 1.
FIG. 2 is an optical path diagram of example 2.
FIG. 3 is an optical path diagram of example 3.
FIG. 4 is an optical path diagram of example 4.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a high beam and low beam LED vehicle light source module includes a low beam LED1, a low beam reflector 2 corresponding to the low beam LED1, a high beam LED 3, a high beam reflector 4 corresponding to the high beam LED 3, a multi-focus lens 5, and a low beam light barrier 6.
As shown in fig. 1, the multifocal lens 5 is made of plastic, PMMA or PC, and includes an exit surface 51 and an entrance surface 52. The exit surface 51 is aspheric and is a complete exit surface. The incidence plane 52 includes a first light source incidence plane group including at least one first incidence plane 522 and a second light source incidence plane group including at least one second incidence plane 521, in this embodiment, the first light source incidence plane group includes one first incidence plane 522 and the second light source incidence plane group includes one second incidence plane 521, the first incidence plane 522 is located in the lower half of the inner side of the lens 5, the second incidence plane 521 is located in the upper half of the inner side of the lens 5, and the first incidence plane 522 and the second incidence plane 521 constitute the complete incidence plane of the lens 5. The first incident surface 522 is a plane, a focal point of the first incident surface 522 is F1, and the first light source light passes through the lens 5 to form collimated light and then is emitted; the second incident surface 521 is a free-form surface, the focal point of the second incident surface 521 is F2, and the second light source light passes through the lens 5 to form collimated light and then is emitted. When the light passing through the focal point F2 enters the second incident surface 521, a refraction occurs, and the reversely extended lines of the refracted light converge and converge at a point to form a virtual focal point F3, and the virtual focal point F3 approaches the focal point F1. The focus F1 and the focus F2 are moderate, the distance between the two points is Δ F, the more the intersection point is close to the inner side of the lens 5, the larger the Δ F is, the more the inner upper half part protrudes to the light source side, and the Δ F is 2.5mm-10 mm.
The low-beam LED emits light vertically upwards, the low-beam reflector 2 converges the light to a focus F1, a light barrier 6 is arranged near the focus F1, and the light is emitted from the lower half part of the lens 5 to form a low-beam type; the high beam LED is directed vertically downward, and the high beam reflector 4 focuses the light to a focal point F2, and the light is emitted from the upper half of the lens 5 to form a high beam pattern.
The thickness of the light barrier 6 depends on the size of Δ f, the larger the Δ f is, the larger the thickness of the light barrier 6 is, and the lower the processing difficulty of the light barrier 6 is.
The invention utilizes the special-shaped lens 5 to form a plurality of incident surfaces, different incident surfaces correspond to different light sources, the corresponding light sources are different in position due to different focuses of different incident surfaces, and the far and near light sources are separated to solve the problem of heat concentration; through far and near light source switching cooperation different lens 5 incident planes to form low beam light type and far beam light type, need not the upset baffle, overall structure is simpler, in addition, owing to save movable part, whole structure installation accuracy is higher, and the light type is more reasonable.
Example 2
As shown in fig. 2, unlike embodiment 1, the first light source incidence plane group includes a first incidence plane 522, the second light source incidence plane group includes a second incidence plane 521, the first incidence plane 522 is located in the upper half of the inner side of the lens 5, and the second incidence plane 521 is located in the lower half of the inner side of the lens 5.
Example 3
As shown in fig. 3, the difference from embodiment 1 is: the first light source incidence plane group comprises a first incidence plane 522, and the second light source incidence plane group comprises two second incidence planes 521; the first incident surface 522 is located at the middle portion of the inner side of the lens 5, and the two second incident surfaces 521 are located at the upper and lower sides of the first incident surface 522. The focal points of the two second incident surfaces 521 are both F2, and the positional relationship between the focal point F1 and the focal point F2 is the same as that in embodiment 1. The light passing through the focal point F1 exits from the middle of the lens 5, and the light passing through the focal point F2 exits from the upper and lower portions of the lens 5.
Example 4
As shown in fig. 4, the difference from embodiment 1 is: the first light source incidence plane group comprises two first incidence planes 522, and the second light source incidence plane group comprises one second incidence plane 521; the second incident surface 521 is located at the middle portion inside the lens 5, and the two first incident surfaces 522 are located at the upper and lower sides of the second incident surface 521. The focal points of the two first incident surfaces 522 are the same as F1, and the positional relationship between the focal point F1 and the focal point F2 is the same as in embodiment 1. The light passing through the focal point F1 exits from the upper and lower portions of the lens 5, and the light passing through the focal point F2 exits from the middle portion of the lens 5.
Claims (5)
1. A high and low beam multifocal lens comprising an exit surface and an entrance surface, characterized in that: the incident plane comprises a first light source incident plane group and a second light source incident plane group, the first light source incident plane group comprises at least one first incident plane, the first incident plane is a plane, the focal point of the first incident plane is F1, and the first light source light forms collimated light after passing through the lens to be emitted; the second light source incidence surface group comprises at least one second incidence surface, the second incidence surface is a free-form surface, the focal point of the second incidence surface is F2, and the light of the second light source forms collimated light after passing through the lens to be emitted; the focus F1 and the focus F2 are on the same optical axis, and the distance between the focus F1 and the focus F2 is Δ F, and the value of Δ F is 2.5mm-10 mm; the first light source incidence surface group comprises a first incidence surface, and the second light source incidence surface group comprises two second incidence surfaces; the first incidence plane is positioned in the middle part of the inner side of the lens, and the two second incidence planes are respectively positioned on the upper side and the lower side of the first incidence plane.
2. A distance-near multifocal lens according to claim 1, characterized in that: the emergent surface is aspheric.
3. A distance-near multifocal lens according to claim 1, characterized in that: the lens is made of PMMA or PC.
4. A distance-near multifocal lens according to claim 1, characterized in that: when the light ray passing through the focus F2 enters the second incident surface, a refraction occurs, and the reverse extension lines of the refracted light ray converge and converge at a point to form a virtual focus F3, and the virtual focus F3 approaches the focus F1.
5. A distance light module, including passing light LED, passing light reflector, distance light LED that correspond with passing light LED, the distance light reflector that corresponds with distance light LED, multifocal lens and passing light barn door, multifocal lens includes exit surface and incident surface, its characterized in that: the incident plane comprises a first light source incident plane group and a second light source incident plane group, the first light source incident plane group comprises at least one first incident plane, the first incident plane is a plane, the focal point of the first incident plane is F1, and the first light source light forms collimated light after passing through the lens to be emitted; the second light source incidence surface group comprises at least one second incidence surface, the second incidence surface is a free-form surface, the focal point of the second incidence surface is F2, and the light of the second light source forms collimated light after passing through the lens to be emitted; the focus F1 and the focus F2 are on the same optical axis, and the distance between the focus F1 and the focus F2 is Δ F, and the value of Δ F is 2.5mm-10 mm; the first light source incidence surface group comprises a first incidence surface, and the second light source incidence surface group comprises two second incidence surfaces; the first incidence plane is positioned in the middle part of the inner side of the lens, and the two second incidence planes are respectively positioned on the upper side and the lower side of the first incidence plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371881.6A CN108644739B (en) | 2018-04-24 | 2018-04-24 | Far and near light multifocal lens and module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371881.6A CN108644739B (en) | 2018-04-24 | 2018-04-24 | Far and near light multifocal lens and module |
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| Publication Number | Publication Date |
|---|---|
| CN108644739A CN108644739A (en) | 2018-10-12 |
| CN108644739B true CN108644739B (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810371881.6A Active CN108644739B (en) | 2018-04-24 | 2018-04-24 | Far and near light multifocal lens and module |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855043A (en) * | 2019-03-22 | 2019-06-07 | 华域视觉科技(上海)有限公司 | Small opening mould group, car light and vehicle |
| JP7279513B2 (en) * | 2019-05-24 | 2023-05-23 | 市光工業株式会社 | vehicle lamp |
| CN110160009B (en) * | 2019-06-12 | 2024-06-25 | 佛山市升阳光学科技有限公司 | Combined optical lens with multiple focal lengths |
| EP3812650A1 (en) | 2019-10-25 | 2021-04-28 | Lumileds Holding B.V. | Lighting module for vehicle headlight |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439689A (en) * | 2016-10-31 | 2017-02-22 | 江苏洪昌科技股份有限公司 | High beam and low beam integrated automobile LED headlamp optical system |
| CN206130804U (en) * | 2016-10-31 | 2017-04-26 | 江苏洪昌科技股份有限公司 | Optical system of far and near light integral type car LED head -light |
| CN107166290A (en) * | 2017-06-26 | 2017-09-15 | 长春海拉车灯有限公司 | A kind of illumination module and the car light with the illumination module |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5641332B2 (en) * | 2011-01-24 | 2014-12-17 | スタンレー電気株式会社 | Lamp |
| JP6516495B2 (en) * | 2015-02-13 | 2019-05-22 | 株式会社小糸製作所 | Vehicle lamp |
| CN106813176A (en) * | 2015-11-27 | 2017-06-09 | 欧司朗有限公司 | A kind of headlight |
| CN107023795B (en) * | 2017-05-02 | 2023-12-19 | 东莞市长资实业有限公司 | LED automobile headlamp module with high-low beam function |
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2018
- 2018-04-24 CN CN201810371881.6A patent/CN108644739B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439689A (en) * | 2016-10-31 | 2017-02-22 | 江苏洪昌科技股份有限公司 | High beam and low beam integrated automobile LED headlamp optical system |
| CN206130804U (en) * | 2016-10-31 | 2017-04-26 | 江苏洪昌科技股份有限公司 | Optical system of far and near light integral type car LED head -light |
| CN107166290A (en) * | 2017-06-26 | 2017-09-15 | 长春海拉车灯有限公司 | A kind of illumination module and the car light with the illumination module |
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| CN108644739A (en) | 2018-10-12 |
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