CN110553213A - Light source module - Google Patents
Light source module Download PDFInfo
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- CN110553213A CN110553213A CN201810558679.4A CN201810558679A CN110553213A CN 110553213 A CN110553213 A CN 110553213A CN 201810558679 A CN201810558679 A CN 201810558679A CN 110553213 A CN110553213 A CN 110553213A
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- Prior art keywords
- light
- light source
- convex lens
- source module
- optical axis
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
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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
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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
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The application discloses light source module, this light source module includes: the light source is used for emitting light; the light-condensing element is arranged on the light-emitting side of the light source and comprises a first incident surface and a reflecting surface, and the light-condensing element is used for converging a first part of light rays passing through the first incident surface to a first converging point and converging a second part of light rays passing through the reflecting surface to a second converging point; the convex lens is arranged on the light-emitting side of the light-gathering element, the front focus of the convex lens is positioned on the first gathering point, the second gathering point is positioned between the first gathering point and the convex lens, and the convex lens is used for projecting the light rays of the first gathering point and the second gathering point. In this way, this application can realize improving the light-emitting effect of light source module to the light distribution control of the different regions of emergent facula through compact optical design.
Description
Technical Field
The application relates to the technical field of lighting, in particular to a light source module.
Background
With the improvement of living standard of people, more and more people join in the line of purchasing cars, which directly promotes the development of the car industry, and various products with different configurations and different price are launched by various large car companies to meet different consumers. In the automotive market, the appearance of the car is also becoming more and more important, and naturally the headlight module as the "eye" of the car is also being emphasized.
the light source module of a typical automobile utilizes an ellipsoidal reflector to reflect light emitted from a light source and projects the light through a lens. However, the central brightness of the illumination spot and the width of the illumination spot are difficult to be considered in the technical scheme, so that the illumination spot is dark at the center or narrow in the left and right illumination ranges. In order to solve the problem, one technical scheme is to arrange a plurality of different light sources respectively responsible for the central brightness of the illumination light spot and the width of the illumination light spot, but the technical scheme leads to a bulky structure of the vehicle lamp and is not beneficial to compact design.
disclosure of Invention
The main technical problem who solves of this application provides a light source module, can realize improving light source module's light-emitting effect to the light distribution control in the different regions of emergent facula through compact's optical design.
In order to solve the technical problem, the application adopts a technical scheme that: providing a light source module, wherein the light source module comprises a light source, a light-gathering element and a convex lens, and the light source is used for emitting light; the light-condensing element is arranged on the light-emitting side of the light source and comprises a first incident surface and a reflecting surface, and the light-condensing element is used for converging a first part of light rays passing through the first incident surface to a first converging point and converging a second part of light rays passing through the reflecting surface to a second converging point; the convex lens is arranged on the light-emitting side of the light-gathering element, the front focus of the convex lens is positioned on the first gathering point, the second gathering point is positioned between the first gathering point and the convex lens, and the convex lens is used for projecting the light rays of the first gathering point and the second gathering point.
Through the mode, the first part of light rays passing through the first incident surface are converged at the first convergence point by the light condensation element, and the front focus of the convex lens is positioned on the first convergence point, so that the first part of light rays can be emitted in parallel under the action of the convex lens; in addition, because a plurality of different light sources are not arranged, the structure of the light source module can be more compact.
In one embodiment, the light collecting element is a total internal reflection lens, the light collecting element further includes a second incident surface, the second incident surface is connected with the first incident surface and surrounds the first incident surface, the reflective surface is connected with the second incident surface and surrounds the second incident surface, the first portion of the light is directly transmitted to the first convergence point after being incident through the first incident surface, and the second portion of the light is reflected to the second convergence point on the reflective surface after being incident through the second incident surface.
In one embodiment, the eccentricity of a cross-section of the reflective surface along a main optical axis of the light-concentrating element is greater than the eccentricity of a cross-section of the first incident surface along a main optical axis of the light-concentrating element. Through the mode, the light emitting range of the second part of light can be expanded to a large extent, and therefore a large light spot area is obtained.
In one embodiment, the main optical axis of the light-concentrating element passes through the center of the first incident surface.
In one embodiment, the outer contour of the first portion of light rays is conical, and the conical taper angle ranges from 60 ° to 120 °.
In one embodiment, the light source module further includes a movable light blocking sheet, when the movable light blocking sheet is disposed at the first position, the movable light blocking sheet is located at the first convergence point, and a side edge of the movable light blocking sheet close to a main optical axis of the convex lens reaches the main optical axis of the convex lens, and light rays are emitted through the convex lens to form a low beam type; when the movable light blocking sheet is arranged at the second position, the movable light blocking sheet does not block light, and the light is emitted through the convex lens to form a high beam type. By the mode, the light source module can realize the switching of the high beam function and the low beam function.
In one embodiment, the light source module further includes a driving mechanism, and the driving mechanism is configured to drive the movable light blocking sheet to move so as to switch the movable light blocking sheet between the first position and the second position. By the mode, the light source module can automatically realize the switching of the high beam function and the low beam function.
In one embodiment, the light concentrating element further comprises a light emitting surface and a light absorbing surface arranged adjacently, the angle between the light emitting surface and the light absorbing surface is less than 170 °, the light emitting surface is perpendicular to the main optical axis of the convex lens, and the intersection line of the light emitting surface and the light absorbing surface is stepped, and the light absorbing surface is coated with a light absorbing material to form the light absorbing material layer. By the mode, the included angle between the light emitting surface and the light absorbing surface is smaller than 170 degrees, so that the volume of the light condensing element can be reduced, and a user can more easily coat the light absorbing material.
In one embodiment, the light source is disposed on the main optical axis of the light condensing element, the optical axis of the light source is not parallel to the optical axis of the light condensing element, and the intensity of the first portion of light falling on the light emitting surface is greater than the intensity of the first portion of light falling on the light absorbing surface. Through the mode, the light absorption surface coated with the light absorption material can absorb a small part of light, and most of light is projected through the light emergent surface, so that the light utilization rate is improved.
In one embodiment, the convex lens is an aspheric lens, the light source module further comprises a radiator and a lamp panel, the lamp panel is used for fixing the light source, and the radiator is used for dissipating heat generated by the light source during operation.
Drawings
FIG. 1 is a schematic cross-sectional view of a light source module according to a first embodiment of the present application;
FIG. 2 is a schematic structural diagram of a light source module according to a first embodiment of the present application;
Fig. 3 is a schematic view of a first light spot formed by light emitted from a light source module according to a first embodiment of the present application;
Fig. 4 is a schematic structural view illustrating a movable light barrier of a light source module according to a second embodiment of the present application when the movable light barrier blocks light;
Fig. 5 is a schematic structural view illustrating a movable light barrier of a light source module according to a second embodiment of the present application when the movable light barrier does not block light;
Fig. 6 is a schematic view of a second light spot of a low beam type emitted by a light source module according to a second embodiment of the present application;
FIG. 7 is a schematic structural diagram of a light source module according to a third embodiment of the present application;
Fig. 8 is a schematic cross-sectional view of a light source module according to a third embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. 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 application.
The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic cross-sectional view of a light source module according to a first embodiment of the present disclosure, fig. 2 is a schematic structural view of the light source module according to the first embodiment of the present disclosure, and fig. 3 is a schematic view of a first light spot formed by light emitted from the light source module according to the first embodiment of the present disclosure.
The light source module includes a light source 11, a light condensing element 12 and a convex lens 13.
In the present embodiment, the light source module 10 may be an automotive lamp module, which may be an automotive front lamp module or an automotive rear lamp module. The light source module 10 may be used to emit a low beam type or a high beam type. When the dipped beam type light is emitted, the light beam inclines towards the ground side so as to avoid dazzling a driver of an oncoming vehicle; when emitting the high beam type, the light beam is emitted to the front and far, so that the intensity of the light emitted from the light source module 10 is high.
The light source 11 is for emitting light. In this embodiment, the number of the light sources 11 may be 1. In other embodiments, the number of light sources 11 may be greater than 1 to increase the intensity of the light emitted by the light sources 11. When the number of the light sources 11 is more than 1, the optical axes of more than 1 light source may be parallel to each other, or may be combined into a beam of light through a light combining device to be emitted.
In the present embodiment, the light source 11 may be an LED light source. In other embodiments, the light source 11 may be a halogen light source, a xenon light source, a laser light source, or the like, and may also be a laser fluorescence light source. When the light source is a laser fluorescent light source, the light source comprises an excitation light source and a fluorescent sheet, and the fluorescent sheet can be replaced to the position of the LED of the embodiment, so that the effect similar to that of the LED light source is achieved.
The light condensing element 12 is disposed on the light emitting side of the light source 11, the light condensing element 12 may include a first incident surface 121 and a reflecting surface 123, and the light condensing element 12 is configured to condense a first part of light passing through the first incident surface 121 to the first condensing point 14, and is configured to condense a second part of light passing through the reflecting surface 123 to the second condensing point 15. In this embodiment, the optical axis of the light source 11 coincides with the central light emitted by the light source, so that more light emitted by the light source can be converged at the first converging point 14, and the central brightness of the light beam irradiation area can meet the requirement. In this embodiment, the second portion of light surrounds the first portion of light, and the optical axis of the light source is on the first portion of light.
The first and second convergence points 14, 15 may both be located on the main optical axis of the light-concentrating element 12, and in this embodiment, the first and second convergence points 14, 15 do not coincide.
The light-focusing element 12 may be a total internal reflection lens. The light-condensing element 12 further includes a second incident surface 122, the second incident surface 122 is connected to the first incident surface 121 and surrounds the first incident surface 121, the reflective surface 123 of the light-condensing element 12 is connected to the second incident surface 122 and surrounds the second incident surface 122, a first portion of the light is directly transmitted to the first convergence point 14 after being incident through the first incident surface 121, and a second portion of the light is reflected to the second convergence point 15 after being incident through the second incident surface 122 on the reflective surface 123.
The main optical axis of the light condensing element 12 passes through the center of the first incident surface 121.
The outer contour of the first portion of light rays is conical, and the conical taper angle α 1 ranges from 60 ° to 120 °, for example, the conical angle α 1 may be 60 °, 90 °, or 120 °. In the embodiment of the present application, the angle of the cone angle α 1 can be changed by changing the distance between the light source and the condensing element. When the taper angle α 1 is larger, the brightness of the first area 16 is higher, and the brightness of the second area 17 is darker, where the first area 16 may be a light spot area formed by light emitted by the light source module and corresponding to the first convergence point, the second area 17 may be an area surrounding the first area 16, and the brightness of the first area 16 is higher than the brightness of the second area 17.
the eccentricity of the reflection surface 123 in a cross section perpendicular to the main optical axis of the light condensing element 12 is greater than the eccentricity of the first incident surface 121 in a cross section perpendicular to the main optical axis of the light condensing element 12.
In the present embodiment, the cross section of the reflection surface 123 along the main optical axis perpendicular to the light condensing element 12 may be circular, and the cross section of the second incident surface 122 along the main optical axis perpendicular to the light condensing element 12 may be elliptical. In other embodiments, the cross section of the reflection surface 123 along the main optical axis perpendicular to the light condensing element 12 and the cross section of the second incident surface 122 along the main optical axis perpendicular to the light condensing element 12 may be both elliptical, and the first incident surface 121 and the second incident surface 122 may have other shapes, such as triangle, quadrangle, pentagon, hexagon, etc., which is not limited by the embodiment.
The shape of the first area 16 of the light spot can be made circular by setting the first incident surface 121 to be circular in cross section along the main optical axis perpendicular to the light condensing element 12, and the shape of the second area 17 of the light spot can be made elliptical by setting the reflection surface 123 to be elliptical in cross section along the main optical axis perpendicular to the light condensing element 12.
The convex lens 13 is disposed on the light-emitting side of the light-gathering element 12, the front focus of the convex lens 13 is located on the first convergence point 14, the second convergence point 15 is located between the first convergence point 14 and the convex lens 13, and the convex lens 13 is configured to project the light of the first convergence point 14 and the light of the second convergence point 15. Since the focal point of the convex lens 13 is located on the first convergence point 14, the convex lens 13 can emit the light rays at the first convergence point 14 in parallel, and the second convergence point 15 is located between the first convergence point 14 and the convex lens 13, that is, the second convergence point 15 is located within the focal length of the convex lens 13, so that the convex lens 13 can emit the light rays at the second convergence point 15 in a divergent manner.
The convex lens 13 may be a biconvex lens 13, a plano-convex lens 13, a meniscus lens 13, or an aspherical lens. In the present embodiment, the convex lens 13 is an aspherical lens, and in other embodiments, the convex lens 13 may be other types of convex lenses 13, for example, a biconvex lens 13, a plano-convex lens 13, a meniscus lens 13, or the like. By setting the convex lens 13 as an aspheric lens, the convex lens 13 can have a better curvature radius, so that the light emitted from the light source module 10 can better meet the requirements of users.
in this embodiment, the main optical axis of the convex lens 13 coincides with the main optical axis of the light condensing element 12, and the light source 11 is disposed on the main optical axis of the convex lens 13 or the main optical axis of the light condensing element 12.
Alternatively, the projection of the convex lens 13 on a cross section perpendicular to the optical axis of the convex lens 13 may be a circle, an ellipse, or a polygon, wherein the polygon may be a triangle, a quadrangle, a pentagon, or a hexagon, etc. In the present application, the projection of the convex lens 13 on a cross section perpendicular to the optical axis of the convex lens 13 is circular. In other embodiments, the projection of the convex lens 13 on the cross section perpendicular to the optical axis of the convex lens 13 may also be in other shapes, such as a quadrangle or a hexagon, which is not limited in this embodiment.
The light source module 10 may further include a lamp panel 18, and the lamp panel 18 is used for fixing the light source 11. Optionally, a control circuit (not shown) may be further disposed in the lamp panel 18, and the control circuit is configured to control on and off of the light source 11. Through setting up lamp plate 18, the light that can make light source 11 send only shines one side to lamp plate 18, not only can improve the utilization ratio of light, can also increase the intensity of this sidelight.
The light source module 10 further includes a heat sink 19, and the heat sink 19 is used for dissipating heat generated by the light source 11 during operation, so as to prevent the heat generated by the light source 11 during operation from being too high and damaging the light source 11. Optionally, the heat sink 19 is also used to fix the lamp panel 18, and thus the light source 11 fixed on the lamp panel 18.
Referring to fig. 4 to 6, fig. 4 is a schematic structural diagram of a movable light-blocking plate of a light source module according to a second embodiment of the present application when the movable light-blocking plate blocks light, fig. 5 is a schematic structural diagram of a movable light-blocking plate of a light source module according to a second embodiment of the present application when the movable light-blocking plate does not block light, and fig. 6 is a schematic diagram of a low beam type second light spot emitted by the light source module according to the second embodiment of the present application.
In the present embodiment, the light source module 20 includes a light source (not shown), a light-gathering element 21 and a convex lens 22.
The light source, the light collecting element 21 and the convex lens 22 in the present embodiment may be the light source 11, the light collecting element 12 and the convex lens 13 in the first embodiment.
The light source module 20 further includes a movable light blocking sheet 23, the movable light blocking sheet 23 is disposed between the light condensing element 21 and the convex lens 22, the movable light blocking sheet 23 is used for blocking part of light emitted from the light condensing element 21, and when the movable light blocking sheet 23 blocks part of light, light having a cut-off line is formed after the light which is not blocked is emitted through the convex lens 13.
In the present embodiment, the movable light-blocking sheet 23 may be disposed perpendicular to the main optical axis of the condensing element 21. In other embodiments, the movable light-blocking sheet 23 may not be arranged perpendicular to the main optical axis of the light-condensing element 21.
More specifically, the movable light blocking sheet 23 may be disposed at a first convergence point, and when the movable light blocking sheet 23 is disposed at the first position, the movable light blocking sheet 23 is disposed at the first convergence point, and a side edge of the movable light blocking sheet 23 close to a main optical axis of the convex lens 22 reaches the main optical axis of the convex lens 22, and light rays are emitted through the convex lens 22 to form a low beam type; when the movable light blocking sheet 23 is disposed at the second position, the movable light blocking sheet 23 does not block light, and the light is emitted through the convex lens 22 to form a high beam type. In other embodiments, the movable light-blocking sheet 23 may also be disposed between the first convergence point and the light-condensing element 21 or between the first convergence point and the convex lens 22, which is not limited herein.
In this embodiment, the low beam pattern forms a second spot having a distinct cut-off line, which may include a third area 24 and a fourth area 25, the third area 24 being brighter than the fourth area 25, and the fourth area 25 partially surrounding the third area 24. The light spot formed by the high beam type may be the first light spot in the first embodiment.
Optionally, the light source module 20 may further include a driving mechanism (not shown) connected to the movable light blocking sheet 23, and the driving mechanism is configured to drive the movable light blocking sheet 23 to move, so that the movable light blocking sheet 23 can be switched between the first position and the second position, and the light source module 20 emits a low beam type and a high beam type.
optionally, the driving mechanism may have multiple implementation manners, for example, a power-on magnetic attraction manner may be adopted, that is, when the light source module 20 needs to emit a low beam shape, the driving mechanism does not operate, and the side edge of the movable light blocking sheet 23 close to the main optical axis of the convex lens 22 is located at the position of the main optical axis of the convex lens 22 to block part of light emitted by the light source, so as to obtain the low beam shape; when light source module 20 need send the high beam light type, actuating mechanism moves, and the actuating mechanism coil lets in the electric current this moment, and the side that activity barn door 23 is close to the primary optical axis of convex lens 22 moves to the position of keeping away from the primary optical axis of convex lens 22 to make the barn door not shelter from light, thereby obtain the high beam light type.
The side of the movable light-blocking sheet 23 close to the main optical axis of the light-condensing element 21 may be provided in a stepped shape.
the stepped shape may be divided into a first section 231, a second section 232, and a third section 233, and the first section 231, the second section 232, and the third section 233 are sequentially connected. In a cross-section taken perpendicular to the main optical axis of the light-concentrating element 21, the projections of the first segment 231 and the third segment 233 are parallel, and the projections of the first segment 231 and the third segment 233 are also parallel to the major axis of the ellipse. The angle between the first 231 and second 232 sections may be 15 ° or 45 °. Wherein the first segment 231 or the third segment 233 may pass through a main optical axis of the light condensing element 21, and further, an intersection point of the first segment 231 and the second segment 232 or an intersection point of the third segment 233 and the second segment 232 is on the main optical axis.
In other embodiments, the stepped shape may be further divided into a first segment (not shown) and a second segment (not shown), and the first segment and the second segment are connected, and the included angle between the first segment and the second segment is 15 °.
The side edge of the movable light blocking sheet 23 close to the main optical axis of the light condensing element 21 is set to be step-shaped, so that the light emitted by the light source module 20 is light type with a cut-off line of step-shaped light and shade.
Alternatively, the movable light-blocking sheet 23 may be made of metal or polymer. A first light absorbing material may be further coated on the movable light-blocking sheet 23 to form a first light absorbing material layer (not shown) on the movable light-blocking sheet 23. The first layer of light absorbing material is typically black in color, since the black material absorbs light of all colors, although other dark colors may be used depending on other specific design requirements. The light absorbing material layer may be made of: iron oxide, carbon black, loose soot, graphite, aniline black, aniline sulfide black, and the like.
Referring to fig. 7 to 8, fig. 7 is a schematic structural diagram of a light source module according to a third embodiment of the present application, and fig. 8 is a schematic cross-sectional diagram of the light source module according to the third embodiment of the present application.
In the present embodiment, the light source module 30 includes a light source 31, a light-focusing element 32 and a convex lens 33. Similarly, the light condensing element 32 includes a first incident surface 321, a second incident surface 322, and a third incident surface 323, and the connection relationship of the first incident surface 321, the second incident surface 322, and the third incident surface 323 may be the same as the connection relationship of the first incident surface 121, the second incident surface 122, and the third incident surface 123 in the first embodiment.
The light source 31, the light condensing element 32, and the convex lens 33 may be the light source 11, the light condensing element 12, and the convex lens 13 in the first embodiment.
The light-concentrating element 32 may further comprise a light exit surface 323 and a light absorbing surface 324 arranged adjacently, the angle between the light exit surface 323 and the light absorbing surface 324 being smaller than 180 °, the light exit surface 323 being perpendicular to the main optical axis. Alternatively, the angle between the light exit plane 323 and the light absorption plane 324 may range between 120 ° and 175 °. For example, the angle between the light exit face 323 and the light absorption face 324 may be 120 °, 165 ° or 175 °.
The intersection line of the light emitting surface 323 and the light absorbing surface 324 is stepped, and the light absorbing surface 324 is coated with a light absorbing material to form a second light absorbing material layer (not shown) on the surface of the light absorbing surface 324. Alternatively, the color and material of the second light absorbing material layer may be the same as those of the first light absorbing material layer in the second embodiment.
By setting the angle between the light exit plane 323 and the light absorption plane 324 to be less than 180 °, not only the volume of the light condensing element 32 can be reduced, but also the user can more easily apply the second light absorbing material.
In this embodiment, the intersection line of the light emitting surface 323 and the light absorbing surface 324 may be divided into a first segment 325, a second segment 326 and a third segment 327, the first segment 325, the second segment 326 and the third segment 327 are sequentially connected, the first segment 325 is parallel to the third segment 327, and both the first segment 325 and the third segment 327 are parallel to the major axis of the ellipse. The angle between the first section 325 and the second section 326 may be 15 or 45. Wherein the first segment 325 or the third segment 327 may pass through a main optical axis of the light condensing element 32. Further, the intersection of the first segment 325 with the second segment 326 or the intersection of the third segment 327 with the second segment 326 is on the main optical axis of the condensing element 32.
In other embodiments, the intersection line of the light exit plane 323 and the light absorption plane 324 may be divided into a first section 325 and a second section 326, the first section 325 being connected to the second section 326, and the angle between the first section 325 and the second section 326 may be 15 °.
In the present embodiment, the light source 31 is disposed on the main optical axis of the light condensing element 32, the optical axis of the light source 31 is not parallel to the main optical axis of the light condensing element 32, and the intensity of the first portion of light falling on the light emitting surface is greater than the intensity of the first portion of light falling on the light absorbing surface. Optionally, the included angle between the optical axis of the light source 31 and the main optical axis of the light condensing element 32 may be in the range of 5 to 60 °. For example, the angle between the optical axis of the light source 31 and the main optical axis of the light condensing element 32 may be 5 °, 30 °, 45 °, or 60 °.
For example, when the light source module 30 in this embodiment is installed in a headlight of an automobile, the light source 31 may be rotated to a side away from the ground or the operation platform, so that an included angle between an optical axis of the light source 31 and a main optical axis of the light condensing element 32 may be 5 to 60 °, so that most of light emitted by the light source 31 can be emitted through the light emitting surface 323, and a small part of light is absorbed by the light absorbing surface 324, thereby improving the utilization rate of light.
different from the prior art, the light source module comprises a light source, a light condensing element and a convex lens, wherein the light source is used for emitting light; the light-condensing element is arranged on the light-emitting side of the light source and comprises a first incident surface and a reflecting surface, and the light-condensing element is used for converging a first part of light rays passing through the first incident surface to a first converging point and converging a second part of light rays passing through the reflecting surface to a second converging point; the convex lens is arranged on the light-emitting side of the light-gathering element, the front focus of the convex lens is positioned on the first gathering point, the second gathering point is positioned between the first gathering point and the convex lens, and the convex lens is used for projecting the light rays of the first gathering point and the second gathering point.
Because the light condensing element converges the first part of light passing through the first incident surface at the first convergent point and the front focus of the convex lens is positioned on the first convergent point, the first part of light can be emitted in parallel under the action of the convex lens, and because the light condensing element converges the second light passing through the reflecting surface at the second convergent point and the second convergent point is positioned between the first convergent point and the convex lens, the second part of light can be emitted in a divergent way under the action of the convex lens, so that the middle of a light spot formed by the light source module is bright and has a large area, and the light emitting effect of the light source module is greatly improved; in addition, because a plurality of different light sources are not arranged, the structure of the light source module can be more compact.
The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.
Claims (10)
1. The utility model provides a light source module which characterized in that, light source module includes:
A light source for emitting light;
The light-condensing element is arranged on the light-emitting side of the light source and comprises a first incident surface and a reflecting surface, and the light-condensing element is used for converging a first part of light rays passing through the first incident surface to a first converging point and converging a second part of light rays passing through the reflecting surface to a second converging point;
Convex lens, convex lens locate condensing element's light-emitting side, just convex lens's front focus is located on the first convergent point, the second convergent point is located first convergent point with between the convex lens, convex lens be used for with the light of first convergent point and second convergent point is thrown away.
2. The light source module of claim 1, wherein the light collecting element is a total internal reflection lens, the light collecting element further includes a second incident surface, the second incident surface is connected to the first incident surface and surrounds the first incident surface, the reflective surface is connected to the second incident surface and surrounds the second incident surface, the first portion of the light is directly transmitted to the first convergence point after being incident through the first incident surface, and the second portion of the light is reflected to the second convergence point after being incident through the second incident surface.
3. The light source module of claim 2, wherein an eccentricity of a cross-section of the reflective surface along a main optical axis of the light condensing element is greater than an eccentricity of a cross-section of the first incident surface along a main optical axis of the light condensing element.
4. The light source module of claim 2, wherein a main optical axis of the light condensing element passes through a center of the first incident surface.
5. The light source module as claimed in claim 1, wherein the outer contour of the first portion of light rays is conical, and the conical angle of the conical shape is in a range of 60 ° to 120 °.
6. The light source module according to claim 1, further comprising a movable light blocking sheet, wherein when the movable light blocking sheet is disposed at the first position, the movable light blocking sheet is at the first convergence point, and a side edge of the movable light blocking sheet close to the main optical axis of the convex lens reaches the main optical axis of the convex lens, and the light rays are emitted by the convex lens to form a low beam type; when the movable light blocking sheet is arranged at the second position, the movable light blocking sheet does not block the light, and the light is emitted through the convex lens to form a high beam type.
7. The light source module according to claim 6, further comprising a driving mechanism, wherein the driving mechanism is configured to drive the movable light barrier to move, so that the movable light barrier is switched between the first position and the second position.
8. The light source module according to claim 1, wherein the light condensing element further comprises a light emitting surface and a light absorbing surface which are adjacently arranged, an included angle between the light emitting surface and the light absorbing surface is less than 180 °, the light emitting surface is perpendicular to a main optical axis of the convex lens, an intersection line of the light emitting surface and the light absorbing surface is stepped, and the light absorbing surface is coated with a light absorbing material.
9. The light source module according to claim 8, wherein the light source is disposed on a main optical axis of the light converging element, the optical axis of the light source is not parallel to the optical axis of the light converging element, and the intensity of the first portion of light falling on the light emitting surface is greater than the intensity of the first portion of light falling on the light absorbing surface.
10. The light source module of claim 1, wherein the convex lens is an aspheric lens, the light source module further comprises a heat sink and a lamp panel, the lamp panel is used for fixing the light source, and the heat sink is used for dissipating heat generated by the light source during operation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810558679.4A CN110553213B (en) | 2018-06-01 | 2018-06-01 | Light source module |
| PCT/CN2019/070542 WO2019227938A1 (en) | 2018-06-01 | 2019-01-05 | Light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810558679.4A CN110553213B (en) | 2018-06-01 | 2018-06-01 | Light source module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110553213A true CN110553213A (en) | 2019-12-10 |
| CN110553213B CN110553213B (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810558679.4A Active CN110553213B (en) | 2018-06-01 | 2018-06-01 | Light source module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110553213B (en) |
| WO (1) | WO2019227938A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN110553213B (en) | 2022-01-07 |
| WO2019227938A1 (en) | 2019-12-05 |
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Denomination of invention: Light source module Effective date of registration: 20230518 Granted publication date: 20220107 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: YLX Inc. Registration number: Y2023980040992 |