CN111120966B - Lens for vehicle lamp, dipped headlight, and vehicle - Google Patents
Lens for vehicle lamp, dipped headlight, and vehicle Download PDFInfo
- Publication number
- CN111120966B CN111120966B CN201911374713.3A CN201911374713A CN111120966B CN 111120966 B CN111120966 B CN 111120966B CN 201911374713 A CN201911374713 A CN 201911374713A CN 111120966 B CN111120966 B CN 111120966B
- Authority
- CN
- China
- Prior art keywords
- optical body
- light
- lens
- lamp according
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- F21S41/27—Thick lenses
-
- 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
-
- 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
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
Abstract
The invention provides a lens for a car lamp, a dipped headlight and a vehicle, and relates to the technical field of car lamps. Lens for vehicle lamp, comprising: a first optical body and a second optical body, the first optical body and the second optical body being connected and integrally molded; the first optical body is a total reflection lens and is provided with a light inlet end, the second optical body is provided with a light outlet end, and the light inlet end and the light outlet end are opposite; wherein the upper surface of the first optical body is smoothly and transitionally connected with the upper surface of the second optical body to form the upper surface of the lens for the car lamp, and the joint of the lower surface of the first optical body and the lower surface of the second optical body is recessed towards the upper surface of the lens for the car lamp to form a light ray cut-off part. The lens for the vehicle lamp solves the problem that the size chain of the dipped headlight lens in a form of a plurality of components is overlarge and has low precision; meanwhile, the first optical body transmits light rays in a total reflection mode, and the light efficiency is improved.
Description
Technical Field
The invention relates to the technical field of vehicle lamps, in particular to a lens for a vehicle lamp, a dipped headlight and a vehicle.
Background
Among the prior art, the passing lamp needs to pass through the setting of bright and dark cut-off line to guarantee that the light of throwing away can not lead to the fact the dazzling condition to opposite driver and pedestrian. As shown in fig. 1, the conventional low beam lens includes a light source 6 ', a reflector (specular reflection) 7 ', a light shielding member 8 ', a lens 9 ', a lens baffle bracket (not shown), and a heat sink 10 ', and has a complicated structure and an excessively large size chain.
In addition, the low beam light also has certain requirements on light efficiency and light emitting brightness, and when the height of the low beam light lens in the Z direction (corresponding to the direction of the vehicle in a three-dimensional coordinate) is less than 30mm, the brightness cannot meet the requirements. If the height of the low beam lens in the Z direction is less than 30mm, a plurality of lenses need to be added side by side to secure the brightness of the low beam, but the increase in the number of lenses compresses the installation space of the remaining components, resulting in difficulty in the overall design of the low beam.
Therefore, the above technical problems are urgently needed to be solved.
Disclosure of Invention
In view of this, embodiments of the present invention provide a lens for a vehicle lamp, a dipped headlight and a vehicle, and to solve the above problems, the present invention mainly provides the following technical solutions:
an embodiment of the present invention provides a lens for a vehicle lamp, including:
a first optical body and a second optical body, the first optical body and the second optical body being connected and integrally molded;
the first optical body is a total reflection lens and is provided with a light inlet end, the second optical body is provided with a light outlet end, and the light inlet end and the light outlet end are opposite;
wherein the upper surface of the first optical body is smoothly and transitionally connected with the upper surface of the second optical body to form the upper surface of the lens for the car lamp, and the joint of the lower surface of the first optical body and the lower surface of the second optical body is recessed towards the upper surface of the lens for the car lamp to form a light ray cut-off part.
Specifically, the lower surface close to the end opposite to the light-entering end of the first optical body is tilted towards the upper surface of the lens for the vehicle lamp, and the lower surface close to the end opposite to the light-exiting end of the second optical body is an inclined surface facing the upper surface of the lens for the vehicle lamp;
the tilting of the lower surface of the first optical body is connected with the inclined plane to form the recess, so that the light interception part is formed.
Specifically, the light intercepting part is located at a joint of the tilting part of the lower surface of the first optical body and the inclined plane, and is in a linear shape with a horizontal straight line in the middle and arc lines on two sides and a substantially U-shape.
Specifically, a direction from the light-in end to the light-out end is a first direction;
the shape of a section of the lower surface of the first optical body along the first direction is an arc with a downward convex middle part;
the radian of each position of the lower surface of the first optical body satisfies that the incident angle of the light ray incident from the light incident end is larger than 39 degrees.
Specifically, the shape of a cross section of the upper surface of the first optical body along the first direction is parabolic, and each radian of the upper surface of the first optical body satisfies that an incident angle of a light ray incident from the light incident end is greater than 39 degrees.
Specifically, two sides of the upper surface and the lower surface of the first optical body are connected in a downward arc-shaped curved shape, and two sides of the lower surface and the upper surface of the first optical body are connected in an upward arc-shaped curved shape;
wherein two sides of the upper surface of the first optical body are smoothly connected with two sides of the lower surface of the first optical body.
Specifically, the width of the first optical body gradually increases along the first direction, and the width of the second optical body gradually increases along the first direction.
Specifically, the light entrance end is an arc curved surface structure recessed from the first optical body toward the second optical body, and is configured to converge light into the first optical body.
Specifically, the arc curved surface structure of the light incident end is strip-shaped and is arranged along the width direction of the first optical body.
Specifically, the light incident end occupies the entire surface of one side of the first optical body.
Specifically, the upper surface of the first optical body is smoothly extended to form the upper surface of the second optical body;
the main body of the lower surface of the second optical body is a plane and forms a preset angle with the inclined plane of part of the lower surface of the first optical body.
Specifically, the preset angle is greater than 120 degrees.
Specifically, the preset angle is 135 degrees to 160 degrees.
Specifically, the left and right side surfaces of the second optical body are both vertical planes;
the surface of the light-emitting end of the second optical body is an arc surface which is convex outwards.
Specifically, the projection of the second optical body from top to bottom is in a fan-shaped ring shape, and the central angle corresponding to the fan-shaped ring shape of the second optical body is 30-60 degrees.
In addition, an embodiment of the present invention provides a low beam lamp including: a lens for a vehicle lamp;
the lens for the vehicle lamp includes: a first optical body and a second optical body, the first optical body and the second optical body being connected and integrally molded;
the first optical body is a total reflection lens and is provided with a light inlet end, the second optical body is provided with a light outlet end, and the light inlet end and the light outlet end are back-to-back;
wherein the upper surface of the first optical body is smoothly transitionally connected with the upper surface of the second optical body to form the upper surface of the lens for the car lamp, and the joint of the lower surface of the first optical body and the lower surface of the second optical body is recessed towards the upper surface of the lens for the car lamp to form a light ray intercepting part.
In addition, an embodiment of the present invention provides a vehicle including: a dipped headlight;
the low beam light comprises: a lens for a vehicle lamp;
the lens for the vehicle lamp includes: a first optical body and a second optical body, the first optical body and the second optical body being connected and integrally molded;
the first optical body is a total reflection lens and is provided with a light inlet end, the second optical body is provided with a light outlet end, and the light inlet end and the light outlet end are opposite;
wherein the upper surface of the first optical body is smoothly and transitionally connected with the upper surface of the second optical body to form the upper surface of the lens for the car lamp, and the joint of the lower surface of the first optical body and the lower surface of the second optical body is recessed towards the upper surface of the lens for the car lamp to form a light ray cut-off part.
By the technical scheme, the lens for the vehicle lamp, the dipped headlight and the vehicle provided by the embodiment of the invention at least have the following advantages:
the lens for the vehicle lamp provided by the embodiment of the invention can be used as a lens for projecting light of a low beam lamp, is in a structure that a first optical body and a second optical body are integrally formed, and a light and shade cut-off line is arranged at the joint of the lower surfaces of the first optical body and the second optical body, so that the light emitted by a light source can be projected from the second optical body after being subjected to the total emission of the first optical body and the shielding action of a light cut-off part 3. Compared with the prior art that the light projection of the dipped headlight needs structures of a lens, a lens baffle bracket, a reflector (mirror reflection), a radiator and the like, and the problem of overlarge dimensional chain of multi-component assembly exists, the integrated lens for the automobile lamp provided by the embodiment of the invention is equivalent to the integration of all optical elements in the prior art, and the problem of overlarge dimensional chain of the dipped headlight lens in a form of a plurality of components and low precision is solved; meanwhile, the first optical body transmits light rays in a total reflection mode, so that the light efficiency is improved and can reach more than 60%, and further, the lens can be designed to be smaller in the Z direction (the direction in the coordinate of a designed vehicle), and the size in the Z direction can be compressed to be less than 20 mm.
Drawings
FIG. 1 is a schematic diagram of a low beam lens in the prior art;
fig. 2 is a schematic view of a first-view perspective structure of a lens for a vehicle lamp according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second perspective view perspective structure of a lens for a vehicle lamp according to an embodiment of the present invention;
fig. 4 is a top view of a lens for a vehicle lamp according to an embodiment of the present invention;
FIG. 5 is a side view of a lens for a vehicle lamp according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a lens for a vehicle lamp along a first direction according to an embodiment of the present invention;
fig. 7 is a schematic third-view perspective view of a lens for a vehicle lamp according to an embodiment of the present invention.
The reference numerals in fig. 1 to 7 include:
100-lens for car light, 1-first optical body, 2-second optical body, 11-light-in end, 21-light-out end, 3-light cut-off portion, 12-warping, 22-inclined plane, R-preset angle, F-first direction, 6 ' -light source, 7 ' -reflector, 8 ' -light-shielding component, 9 ' -lens, 10 ' -radiator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 2 to 7, a lens 100 for a vehicle lamp according to a first embodiment of the present invention includes: a first optical body 1 and a second optical body 2, the first optical body 1 and the second optical body 2 being connected and integrally molded; the first optical body 1 is a total reflection lens and is provided with a light inlet end 11, the second optical body 2 is provided with a light outlet end 21, and the light inlet end 11 is opposite to the light outlet end 21; wherein, the upper surface of the first optical body 1 and the upper surface of the second optical body 2 are smoothly transitionally connected to form the upper surface of the lens 100 for the vehicle lamp, and the joint of the lower surface of the first optical body 1 and the lower surface of the second optical body 2 is recessed toward the upper surface of the lens 100 for the vehicle lamp to form the light beam cut-off part 3.
Specifically, in the lens 100 for a vehicle lamp according to the embodiment of the present invention, the first optical body 1 and the second optical body 2 are integrally formed, for example, by injection molding or block machining, and the material for forming the first optical body 1 and the second optical body 2 may be optical glass or other high light transmittance materials.
The lens 100 for the car light adopts the operating principle of total reflection to transmit light, namely, the light enters the optically dense medium of the lens 100 for the car light from the optically sparse medium of air, and the side surface of the lens 100 for the car light is set to the angle capable of making the light totally reflected in the side surface, namely, the surface of the first optical body 1 is required to be a smooth surface, so that the light entering the first optical body 1 through the light inlet end 11 arranged on the first optical body 1 can be transmitted to the second optical body 2 as much as possible, and the light efficiency can be effectively improved through the enlarged projection of the second optical body 2. The structure of the light incident end 11 can be matched with the structure of the light source, so that light emitted by the light source can be vertically incident into the first optical body 1, and the incidence rate of the light emitted by the light source can be ensured.
The second optical body 2 is provided with a light-emitting end 21, and the light-emitting end 21 can refer to the traditional structural form of the light-emitting end 21, for example, be provided as a circular arc curved surface, so as to achieve the effect of amplifying the projected light.
The light ray cut-off part 3 is arranged between the first optical body 1 and the second optical body 2, and the light ray cut-off part 3 corresponds to a focal plane of the lens 100 for the vehicle lamp, namely, the top edge of an upward recess at the joint of the lower surface of the first optical body and the lower surface of the second optical body is positioned on the focal plane, so that light rays emitted by a light source have obvious light and shade cut-off lines after passing through the lens 100 for the vehicle lamp provided by the invention, so as to realize the illumination effect of a low-beam lamp. In addition, the light ray cut-off part 3 is formed by arranging a recess at the joint of the lower surface of the first optical body 1 and the lower surface of the second optical body 2, and because the light ray in the first optical body 1 is totally reflected, at least part of the light ray can enter the second optical body 2 under the action of total reflection when the light ray irradiates the position of the light ray cut-off part 3 formed by the recess, so that the transmission efficiency of the light ray is ensured, namely, compared with the prior art that the light and dark cut-off line is formed by shielding of a shielding object, a part of the light ray is lost, the lens 100 for the vehicle lamp provided by the embodiment of the invention effectively improves the light efficiency.
The lens 100 for a vehicle lamp according to the embodiment of the present invention is a lens for projecting light of a low beam lamp, and is configured by integrally molding the first optical body 1 and the second optical body 2, and the light intercepting part 3 is disposed at the joint of the lower surfaces of the first optical body 1 and the second optical body 2, so that light emitted from a light source can be projected from the second optical body 2 after passing through the full emission of the first optical body 1 and the shielding effect of the light intercepting part 3, and thus the lens 100 for a vehicle lamp according to the embodiment of the present invention can achieve the light projection effect of a low beam lamp by an integral lens structure. Compared with the prior art that the light projection of the low beam needs structures of a lens, a lens baffle bracket, a reflector (mirror reflection), a radiator and the like, and the problem of overlarge size chain of multi-component assembly exists, the integrated lens 100 for the vehicle lamp, provided by the embodiment of the invention, is equivalent to the integration of all optical elements in the prior art, and the problem of overlarge size chain and low precision of the low beam lens in a form of a plurality of components is solved; meanwhile, the first optical body 1 is used for transmitting light rays in a total reflection mode, the light efficiency is improved, the light efficiency can reach more than 60%, and then the lens can be designed to be smaller in the Z direction, so that the size of the Z direction can be compressed to be less than 20 mm.
As shown in fig. 2 to 7, in a specific implementation, a lower surface of the first optical body 1, which is close to an end opposite to the light-entering end 11, is tilted toward an upper surface of the lens 100 for a vehicle lamp, and a lower surface of the second optical body 2, which is close to an end opposite to the light-exiting end 21, is an inclined surface 22 facing the upper surface of the lens 100 for a vehicle lamp; the protrusion 12 of the lower surface of the first optical body 1 is connected to the inclined surface 22 to form the recess, so as to form the light intercepting part 3.
Specifically, the tilt 12 at the connection between the lower surface of the first optical body 1 and the lower surface of the second optical body 2 may be an arc-shaped tilt 12, or a tilt 12 in the form of an inclined surface 22, wherein the arc-shaped tilt 12 is preferably connected with the inclined surface 22 at the connection between the lower surface of the second optical body 2, and is a connection between the edge of the surface and the edge of the surface, so that the connection forms a line, and the connection is located on the focal plane, so that after the light is transmitted from the first optical body 1 to the light cut-off portion 3, the upper half of the light is transmitted into the second optical body 2 and is emitted from the light emitting end 21 of the second optical body by projection, while the lower half of the light is blocked by the light cut-off portion 3, and due to the edge structure of the light cut-off portion 3, when the whole incident light is emitted from the second optical body 2, the emitted light shadow forms a form with only the lower half of the light shadow, there is a clear cutoff in the upper half. Further, the lens 100 for a vehicle lamp has the light intercepting part 3, and the light projected by the first optical body 1 and the second optical body 2 provides the illumination effect required for the low beam.
Further, the light intercepting part 3 is located at a joint of the tilted part 12 of the lower surface of the first optical body 1 and the inclined surface 22, and forms a substantially U-shaped line shape with a horizontal straight line in the middle and arc lines on both sides.
Specifically, the length direction of the formed linear edge corresponds to the width direction of the first optical body 1 and the second optical body 2, and thus, the two sides of the light ray cut-off portion 3 are set to be arcs, and the lens 100 for the vehicle lamp forms the edge-shaped optical structure at the arcs of the two sides, because the edge-shaped optical structure has the effect of total reflection, light rays enter the first optical body 1 through the light incident end 11 and irradiate the position of the light ray cut-off portion 3 through total reflection, and can enter the second optical body 2 together with light rays which are not blocked by the light ray cut-off portion 3 through the total reflection of the edge-shaped optical structure formed at the arcs, and further, the light ray cut-off portion 3 is set to be in the form of arcs at the two sides, so that the light efficiency can be improved. And the light rays passing through the edge-shaped optical structure and passing through the edge-shaped optical structure without being shielded are concentrated at the light ray cut-off part 3 together with the light rays totally reflected by the edge-shaped optical structure, so that the light intensity at the position is higher, and the road surface illumination effect is favorably improved.
As shown in fig. 2-7, in an implementation, a direction from the light-entering end 11 to the light-exiting end 21 is a first direction F; the shape of a section of the upper surface of the first optical body 1 along the first direction F is parabolic, and each radian of the upper surface of the first optical body satisfies that the incident angle of light incident from the light incident end is greater than 39 degrees. The lower surface of the first optical body 1 is in a curved arc shape with a downward convex middle part along the section shape of the first direction F; the radian of each position of the lower surface of the first optical body satisfies that the incident angle of the light ray incident from the light incident end is larger than 39 degrees. The two sides of the upper surface and the lower surface of the first optical body 1, which are connected, are downward arc-shaped curved, and the two sides of the lower surface and the lower surface of the first optical body 1, which are connected, are upward arc-shaped curved; wherein, two sides of the upper surface of the first optical body 1 are smoothly connected with two sides of the lower surface of the first optical body 1.
Specifically, in order to ensure that light can realize total reflection in the first optical body 1, the first optical body 1 may be simulated as an ellipsoid, the light incident end 11 of the first optical body 1 is used as one spherical center of the ellipsoid, the other end of the first optical body, that is, one end of the focal plane, is used as the other spherical center of the ellipsoid, and since the lens of the ellipsoid has the characteristic of total reflection, the upper surface and the lower surface of the first optical body 1 may be appropriately deformed, and as long as it is ensured that when light incident from the light incident end 11 is irradiated on the upper surface or the lower surface, the incident angle corresponding to the incident point is greater than 39 degrees, total reflection can be realized.
The upper surface of the first optical body 1 may be provided based on a paraboloid or a hyperboloid, and is preferably a paraboloid. The lower surface of the first optical body 1 is curved, so that the light entering the first optical body 1 is reflected by total reflection when the light is transmitted and irradiated on the lower surface of the first optical body 1, and the lower surface is curved, so that the incident angle and the reflection angle of the light are both reduced, the quantity of the light reflected by the light interception part 3 can be increased, and the light efficiency is effectively improved.
In addition, both sides of the upper and lower surfaces of the first optical body 1 are set to be arc-shaped curved shapes, and both sides of the upper surface and the lower surface of the first optical body 1 are smoothly connected at both sides, so that the first optical body 1 can be guaranteed to be a totally reflected optical body, and the light can be transmitted in the first optical body 1 in a totally reflected manner.
As shown in fig. 2-7, in implementations in which the width of the first optical body 1 gradually increases along the first direction F, the width of the second optical body 2 also gradually increases.
Specifically, by gradually widening the first optical body 1 and the second optical body 2 in the first direction F, the entire lens 100 for a vehicle lamp can be designed to be smaller in the Z direction (direction in the coordinate of the design vehicle) while satisfying the illumination intensity, and the dimension in the Z direction can be reduced to 20mm or less, thereby satisfying the use requirement.
In a specific implementation, the light incident end 11 is a circular arc curved surface structure recessed from the first optical body 1 toward the second optical body 2, and is configured to collect light into the first optical body 1.
Specifically, in order to make all the light emitted from the light source enter the first optical body 1, the light entrance end 11 is configured as a circular arc curved surface concave toward the first optical body 1. It should be noted that the curved surface of the arc curved surface structure needs to be set according to the light angle of the light source, so as to ensure that the light emitted by the light source can vertically irradiate on the arc curved surface of the light incident end 11, and ensure that all the light emitted by the light source enters the first optical body 1.
Furthermore, the arc curved surface structure of the light incident end 11 is strip-shaped and is arranged along the width direction of the first optical body 1; and the light entry end 11 occupies the entire surface of one side of the first optical body 1.
Specifically, the light incident end 11 is configured to have a long-strip-shaped arc curved surface structure, and the light incident end 11 can accommodate and take in more light rays, for example, the light source can be a long-strip-shaped LED light source, and at this time, the long-strip-shaped light incident end 11 can ensure that all light rays emitted by the light source are taken in. Meanwhile, the light incoming end 11 occupies the whole surface of one side of the whole first optical body 1, so that the light incoming end 11 is matched with a light source, one side of the first optical body 1 is set to be the minimum area, the whole volume of the first optical body 1 can be reduced, and the design and use requirements of a vehicle are met.
As shown in fig. 2-7, in an implementation, the upper surface of the first optical body 1 is smoothly extended to form the upper surface of the second optical body 2; the lower surface of the second optical body 2 is a plane and forms a predetermined angle R with the inclined surface 22 of the lower surface of the first optical body 1.
Specifically, in the lens 100 for a vehicle lamp according to the embodiment of the present invention, the first optical body 1 and the second optical body 2 are integrally formed, and for convenience of processing and considering that the upper surface of the second optical body 2 is not a surface required for light transmission, reflection, or refraction when the low beam effect is not formed, it is preferable that the upper surface of the second optical body 2 is obtained by directly and smoothly extending the upper surface of the first optical body 1 after designing the shape of the upper surface. In addition, the main body of the lower surface of the second optical body 2 is not a surface for transmitting, reflecting, or refracting light, and the lower surface is not limited as long as it has characteristics that facilitate mounting, so the main body of the lower surface of the second optical body 2 is provided as a plane.
The predetermined angle is set between the inclined plane 22 of the lower surface of the second optical body 2 and the plane of the main body, so that the inclined plane 22 has a certain tangential angle, and after the inclined plane 22 is connected with the tilted part 12 of the lower surface of the first optical body 1, a proper light ray cut-off part 3 can be obtained. The preset angle R may be set specifically according to the specific situation of the warpage of the lower surface of the first optical body 1 and the structural size of the entire lens 100 for a vehicle lamp.
Further, the preset angle R is preferably greater than 120 degrees, for example, the preset angle may be set to 135-160 degrees, that is, the angle between the inclined plane 22 and the main body plane of the lower surface of the second optical body 2 may not be too small, so as to avoid affecting the effect of the light intercepting part 3 formed by the connection between the inclined plane 22 and the portion of the tilted part 12 of the lower surface of the first optical body 1.
As shown in fig. 2 to fig. 7, in an implementation, a surface where the light emitting end of the second optical body 2 is located is an arc surface protruding outward.
In particular, the method comprises the following steps of,
in the specific implementation, since the left and right side surfaces of the second optical body 2 are non-functional surfaces, the two side surfaces are set to be vertical planes for the convenience of processing and the convenience of subsequent positioning and installation. The second optical body 2 mainly functions to project the light transmitted by the first optical body 1, and in order to improve the light efficiency and the brightness, a surface where the light emitting end 21 of the second optical body 2 is located may be an outwardly convex arc surface, that is, the projection of the second optical body 2 from top to bottom may be a fan-shaped ring, and preferably, a central angle corresponding to the fan-shaped ring of the second optical body 2 is set to be 30-60 degrees.
Example two
An embodiment of the present invention provides a low beam light, including: a lens 100 for a vehicle lamp; as shown in fig. 2 to 7, the lens 100 for a vehicle lamp includes: a first optical body 1 and a second optical body 2, the first optical body 1 and the second optical body 2 being connected and integrally molded; the first optical body 1 is a total reflection lens and is provided with a light inlet end 11, the second optical body 2 is provided with a light outlet end 21, and the light inlet end 11 is opposite to the light outlet end 21; wherein, the upper surface of the first optical body 1 and the upper surface of the second optical body 2 are smoothly transitionally connected to form the upper surface of the lens 100 for the vehicle lamp, and the joint of the lower surface of the first optical body 1 and the lower surface of the second optical body 2 is recessed toward the upper surface of the lens 100 for the vehicle lamp to form the light beam cut-off part 3.
Specifically, the lens 100 for the vehicle lamp in the second embodiment can directly use the lens 100 for the vehicle lamp provided in the first embodiment, and specific implementation structures can refer to relevant contents described in the first embodiment, and are not described herein again.
In the low beam lamp provided by the embodiment of the present invention, the lens 100 for the vehicle lamp provided by the above embodiment is used, and the lens 100 for the vehicle lamp adopts the structure that the first optical body 1 and the second optical body 2 are integrally molded, and the light interception part 3 is arranged at the connection part of the lower surfaces of the first optical body 1 and the second optical body 2, so that the light emitted by the light source can be projected from the second optical body 2 after passing through the full emission of the first optical body 1 and the shielding function of the light interception part 3, and thus, the lens 100 for the vehicle lamp provided by the embodiment of the present invention can realize the light projection effect of the low beam lamp through an integral lens structure. Compared with the prior art that the light projection of the low beam needs structures of a lens, a lens baffle bracket, a reflector (mirror reflection), a radiator and the like, and the problem of overlarge size chain of multi-component assembly exists, the integrated lens 100 for the vehicle lamp, provided by the embodiment of the invention, is equivalent to the integration of all optical elements in the prior art, and the problem of overlarge size chain and low precision of the low beam lens in a form of a plurality of components is solved; meanwhile, the first optical body 1 transmits light rays in a total reflection mode, so that the light efficiency is improved and can reach more than 60%, and further, the lens can be designed to be smaller in the Z direction (the direction in the coordinate of a designed vehicle), and the size in the Z direction can be compressed to be less than 20 mm.
EXAMPLE III
An embodiment of the present invention provides a vehicle, including: a dipped headlight; the low beam light comprises: a lens 100 for a vehicle lamp; as shown in fig. 2 to 7, the lens 100 for a vehicle lamp includes: a first optical body 1 and a second optical body 2, the first optical body 1 and the second optical body 2 being connected and integrally molded; the first optical body 1 is a total reflection lens and is provided with a light inlet end 11, the second optical body 2 is provided with a light outlet end 21, and the light inlet end 11 is opposite to the light outlet end 21; wherein, the upper surface of the first optical body 1 and the upper surface of the second optical body 2 are smoothly transitionally connected to form the upper surface of the lens 100 for the vehicle lamp, and the joint of the lower surface of the first optical body 1 and the lower surface of the second optical body 2 is recessed toward the upper surface of the lens 100 for the vehicle lamp to form the light beam cut-off part 3.
Specifically, the lens 100 for the vehicle lamp in the third embodiment can directly use the lens 100 for the vehicle lamp provided in the first embodiment, and specific implementation structures can refer to relevant contents described in the first embodiment, and are not described herein again.
In the vehicle according to the embodiment of the present invention, the lens 100 for the vehicle lamp is used as the low beam lamp, the lens 100 for the vehicle lamp is formed by integrally molding the first optical body 1 and the second optical body 2, and the light intercepting part 3 is provided at the joint of the lower surfaces of the first optical body 1 and the second optical body 2, so that the light emitted by the light source can be projected from the second optical body 2 after passing through the full emission of the first optical body 1 and the shielding function of the light intercepting part 3, and thus the lens 100 for the vehicle lamp according to the embodiment of the present invention can realize the light projection effect of the low beam lamp by an integral lens structure. Compared with the prior art that the light projection of the low beam needs structures of a lens, a lens baffle bracket, a reflector (mirror reflection), a radiator and the like, and the problem of overlarge size chain of multi-component assembly exists, the integrated lens 100 for the vehicle lamp, provided by the embodiment of the invention, is equivalent to the integration of all optical elements in the prior art, and the problem of overlarge size chain and low precision of the low beam lens in a form of a plurality of components is solved; meanwhile, the first optical body 1 transmits light rays in a total reflection mode, so that the light efficiency is improved and can reach more than 60%, and further, the lens can be designed to be smaller in the Z direction (the direction in the coordinate of a designed vehicle), and the size in the Z direction can be compressed to be less than 20 mm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (13)
1. A lens for a vehicle lamp, characterized by comprising:
a first optical body and a second optical body integrally molded;
the first optical body is a total reflection lens and is provided with a light inlet end, the second optical body is provided with a light outlet end, and the light inlet end and the light outlet end are opposite;
wherein the upper surface of the first optical body is smoothly and transitionally connected with the upper surface of the second optical body to form the upper surface of the lens for the car light, and the joint of the lower surface of the first optical body and the lower surface of the second optical body is concave towards the upper surface of the lens for the car light to form a light ray cut-off part;
the lower surface close to the end, opposite to the light inlet end, of the first optical body is tilted towards the upper surface of the lens for the car lamp, and the lower surface close to the end, opposite to the light outlet end, of the second optical body is an inclined surface facing the upper surface of the lens for the car lamp;
the tilting of the lower surface of the first optical body is connected with the inclined plane to form the recess so as to form the light interception part;
the light interception part is positioned at the joint of the tilting part of the lower surface of the first optical body and the inclined plane and is in a linear shape with a horizontal straight line in the middle and arc lines on two sides and a U shape.
2. The lens for a vehicular lamp according to claim 1,
the direction from the light inlet end to the light outlet end is a first direction;
the shape of a section of the lower surface of the first optical body along the first direction is an arc with a downward convex middle part;
the radian of each position of the lower surface of the first optical body satisfies that the incident angle of the light ray incident from the light incident end is larger than 39 degrees.
3. The lens for a vehicular lamp according to claim 2,
the shape of a section of the upper surface of the first optical body along the first direction is parabolic, and each radian of the upper surface of the first optical body satisfies that the incident angle of light rays incident from the light incident end is greater than 39 degrees.
4. The lens for a vehicular lamp according to claim 2,
the two sides of the upper surface and the lower surface of the first optical body are connected in a downward arc-shaped bent shape, and the two sides of the lower surface and the upper surface of the first optical body are connected in an upward arc-shaped bent shape;
wherein two sides of the upper surface of the first optical body are smoothly connected with two sides of the lower surface of the first optical body.
5. The lens for a vehicular lamp according to claim 2,
the width of the first optical body gradually increases along the first direction, and the width of the second optical body gradually increases along the first direction.
6. The lens for a vehicular lamp according to claim 1,
the light-entering end is an arc curved surface structure which is concave from the first optical body to the second optical body and is used for converging light rays into the first optical body.
7. The lens for a vehicular lamp according to claim 1,
the upper surface of the first optical body is smoothly extended to form the upper surface of the second optical body;
the main body of the lower surface of the second optical body is a plane and forms a preset angle with the inclined plane of part of the lower surface of the second optical body.
8. The lens for a vehicular lamp according to claim 7,
the preset angle is greater than 120 degrees.
9. The lens for a vehicular lamp according to claim 8,
the preset angle is 135-160 degrees.
10. The lens for a vehicular lamp according to claim 7,
the surfaces of the left side and the right side of the second optical body are vertical planes;
the surface of the light-emitting end of the second optical body is an arc surface which is convex outwards.
11. The lens for a vehicular lamp according to claim 1,
the projection of the second optical body from top to bottom is in a sector ring shape, and the central angle of the sector ring shape is 30-60 degrees.
12. A low beam light, characterized by: the method comprises the following steps:
a lens for a vehicular lamp according to any one of claims 1 to 11.
13. A vehicle, characterized in that: the method comprises the following steps:
the low beam of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374713.3A CN111120966B (en) | 2019-12-27 | 2019-12-27 | Lens for vehicle lamp, dipped headlight, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374713.3A CN111120966B (en) | 2019-12-27 | 2019-12-27 | Lens for vehicle lamp, dipped headlight, and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111120966A CN111120966A (en) | 2020-05-08 |
| CN111120966B true CN111120966B (en) | 2022-05-03 |
Family
ID=70503852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911374713.3A Active CN111120966B (en) | 2019-12-27 | 2019-12-27 | Lens for vehicle lamp, dipped headlight, and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111120966B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895335A (en) * | 2015-09-14 | 2017-06-27 | 法雷奥照明公司 | The light emitting module being made of clear material |
| CN108302457A (en) * | 2016-09-01 | 2018-07-20 | 法雷奥照明公司 | Optical module for illuminating ceiling light |
| CN109073184A (en) * | 2016-04-29 | 2018-12-21 | Zkw集团有限责任公司 | For motor vehicle searchlight for generating the lighting unit of the light beam with light and shade limit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539163B (en) * | 2017-07-31 | 2021-05-28 | 长春海拉车灯有限公司 | Optical lens and have optical lens's optical module, vehicle headlamps |
| CN209839956U (en) * | 2019-01-30 | 2019-12-24 | 曼德电子电器有限公司 | High beam module and vehicle |
| CN110067986A (en) * | 2019-06-03 | 2019-07-30 | 华域视觉科技(上海)有限公司 | Low beam reflector, the projection-type headlamp of distance-light one and vehicle |
-
2019
- 2019-12-27 CN CN201911374713.3A patent/CN111120966B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895335A (en) * | 2015-09-14 | 2017-06-27 | 法雷奥照明公司 | The light emitting module being made of clear material |
| CN109073184A (en) * | 2016-04-29 | 2018-12-21 | Zkw集团有限责任公司 | For motor vehicle searchlight for generating the lighting unit of the light beam with light and shade limit |
| CN108302457A (en) * | 2016-09-01 | 2018-07-20 | 法雷奥照明公司 | Optical module for illuminating ceiling light |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111120966A (en) | 2020-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7384899B2 (en) | Light-emitting module that reflects the illuminated surface of the condenser | |
| JP4921372B2 (en) | LED collimator element with semi-parabolic reflector | |
| US8070337B2 (en) | Vehicle lamp | |
| US7748880B2 (en) | Vehicle lamp with overhead sign illumination | |
| US7985011B2 (en) | Vehicle lamp | |
| US8348486B2 (en) | Vehicular lamp unit and vehicular lamp | |
| WO2011086969A1 (en) | Vehicle headlamp | |
| US20070236950A1 (en) | Headlight assembly having strongly trained cut-off | |
| US7645061B2 (en) | Headlight assembly | |
| US8801250B2 (en) | Vehicle lighting device | |
| US10766399B2 (en) | Headlight system for a vehicle | |
| CN110094688B (en) | Intelligent head lamp | |
| CN110094689B (en) | Intelligent head lamp | |
| US7121704B2 (en) | Vehicle headlamp | |
| CN112469941A (en) | Front light device | |
| US7175322B2 (en) | Vehicle headlamp | |
| KR101243358B1 (en) | Headlight for vehicle | |
| WO2021093233A1 (en) | Reflection-type headlamp module, headlamp module, headlamp and vehicle | |
| CN114270097A (en) | Headlamp module and headlamp device | |
| EP1160503A2 (en) | Vehicle light | |
| CN107062123B (en) | Projection type optical lighting system for automobile lamp | |
| EP3974877A1 (en) | Vehicular light guiding body and vehicular lamp unit | |
| CN210662689U (en) | Reflection-type headlamp module, headlamp and vehicle | |
| CN211694714U (en) | High beam optical element, high beam module, car light and vehicle | |
| CN111120966B (en) | Lens for vehicle lamp, dipped headlight, and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |