WO2019179121A1

WO2019179121A1 - Light source module and automobile headlamp

Info

Publication number: WO2019179121A1
Application number: PCT/CN2018/113871
Authority: WO
Inventors: 陈良晓; 李屹
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2018-03-19
Filing date: 2018-11-05
Publication date: 2019-09-26
Also published as: CN110285381A

Abstract

Disclosed are a light source module and an automobile headlamp. The light source module (100) comprises a first light source (101), a second light source component (102) and a reflecting device (103); the first light source is disposed in a space surrounded by the reflecting device; a light emitting surface of the first light source faces towards a reflecting surface (103a) of the reflecting device; the reflecting surface is used for reflecting the light output by the first light source and guiding to a light outlet (110) of the reflecting device. An end of the reflecting device away from the light outlet is provided with an incident area (111); and the light output by the second light source component is incident through the incident area, directly passes through the inner space of the reflecting device and then exits through the light outlet. Therefore, the center brightness and the structural compactness of the light output by the light source module are improved.

Description

Light source module and vehicle headlight

Technical field

The present invention relates to the field of optical technologies, and in particular, to a light source module and a vehicular headlamp.

Background technique

The inventors of the present invention found in the long-term research and invention that the automobile headlights are lighting devices installed on both sides of the automobile head for night driving roads. There are two lights and four lights. The lighting effect of the headlights directly affects the operation and traffic safety of driving at night. Therefore, the traffic management departments of all countries in the world generally stipulate the lighting standards for automobile headlights in legal form to ensure the safety of driving at night.

However, the automobile headlamps widely used in the market have complicated internal structures, and due to the limitation of the internal structure of the existing automobile headlights, the brightness of the center of the output illumination light is insufficient to provide the illumination light required for the night driving of the automobile. The brightness of the center has an adverse effect on the safety of the car at night, and there are potential safety hazards.

Summary of the invention

In view of this, the technical problem to be solved by the present invention is to provide a light source module and a vehicle headlight, which can improve the center brightness and compactness of the light output by the light source module.

In order to solve the above technical problem, the present invention provides a light source module: the light source module includes a first light source, a second light source assembly, and a reflection device; the first light source is disposed in a space surrounded by the reflective device, And the light emitting surface of the first light source faces the reflecting surface of the reflecting device, and the reflecting surface is configured to reflect and guide the light output by the first light source to the light exit port of the reflecting device; An end portion away from the light exit opening is provided with an incident region, and light output by the second light source assembly is incident through the incident region, directly passes through an inner space of the reflecting device, and is emitted through the light exit opening.

Different from the prior art, the headlights of the automobile are limited by the internal structure, so that the center of the light output by the existing automobile headlights is not high in brightness and the structure is compact. The beneficial effects of the present invention are as follows: The light source module provided by the present invention comprises a first light source, a second light source component and a reflecting device, and the first light source is disposed in a space surrounded by the reflecting device, so that the light emitting surface of the first light source is oriented Reflecting device reflecting surface; and disposing the second light source component outside the space surrounded by the reflecting device, and guiding the output light of the second light source component to the inner space of the reflecting device by the incident region disposed at the end of the reflecting device away from the light emitting port . Since the incident region is located at the end of the reflecting device away from the lens, the received luminous flux from the first light source approaches "0", so that the second light source component can be passed without affecting the output light utilization rate of the first light source. The output light increases the center brightness of the light output by the light source module. And directly arranging the incident region of the second light source assembly on the end of the reflecting device such that the light of the first light source reflected by the reflecting surface of the reflecting device and the light of the second light source component incident through the incident region pass through the light exit port of the reflecting device The light is guided by the reflection device at the same time, and the light of the first light source and the second light source component is guided at the same time, and the structure is simple and compact, and the optical expansion loss during the general geometric combination is avoided. .

In one embodiment, the second light source assembly includes a laser and a concentrating lens. The exiting light of the laser has a small divergence angle and a high optical power density. By using a second light source assembly including a laser, brighter illumination can be achieved with a smaller incident area, and the smaller the incident area means Less loss of the first light source.

The laser can be, for example, a laser semiconductor light source such as a laser diode, a laser diode array, etc., and the laser can be other types of laser sources. The function of the concentrating lens is mainly to collimate the light emitted by the laser.

In one embodiment, the second light source assembly includes a second excitation light source, a second wavelength conversion device, and a collecting lens, the second excitation light source emitting a second excitation light, and at least a portion of the second excitation light is The second wavelength converting device converts into a second received laser light, and the combined light of the second received laser light and the unconverted second excitation light is collected by a collecting lens and then incident on the reflecting device. In this embodiment, a method of exciting a wavelength conversion device by a second excitation light source can obtain high-intensity output light. Since the laser light emitted by the wavelength conversion device and the unabsorbed excitation light scattered by the wavelength conversion device are approximately Lambertian-distributed light, the present embodiment provides a non-converted second excitation light by providing a collecting lens. The second laser is collected, and the output light of the second light source component incident through the incident region of the reflecting device is incident at a small divergence angle, thereby preventing the output light of the second light source component from being changed by the reflecting surface of the reflecting device. .

In one embodiment, the concentrating lens is used to limit the divergence half angle of the light beam incident to the incident region to within 8 degrees. This embodiment makes the output light of the second light source assembly more concentrated, ensuring that the output light passes through the internal space of the reflecting device, and can serve as a light source that only enhances the central illuminance.

In one embodiment, the second excitation source is a blue laser source, the second wavelength conversion device comprises a yellow wavelength conversion material, and the blue light is converted by the yellow wavelength conversion material into a yellow light-receiving laser, the yellow light being subjected to laser light and unabsorbed blue light. The combined light becomes white light and then emerges.

In one embodiment, the exit angle of the light emitted by the first light source toward the incident region is greater than 60°. In this embodiment, a major portion of the light emitted by the first light source is incident on the reflecting surface and is reflected toward the light exiting port. Only a small portion of the light having an exit angle greater than 60° is incident on the incident region and is lost. Here, the exit angle refers to an angle from a normal to a light emitting surface of the first light source to an outgoing light.

In one embodiment, the light emitting surface of the first light source is disposed at a focus position of the reflective device, and the first light source is an LED light source. The light emitted by the LED light source is approximately Lambertian-distributed light, and its uniform illumination facilitates the formation of a wide spread angle illuminance distribution after reflection by the reflecting means. The LED light source can be a single LED light source or an LED array light source.

In one embodiment, the first light source includes a first excitation light source and a first wavelength conversion device, and an exit surface of the first wavelength conversion device is a light emitting surface of the first light source, and the first excitation light source emits a first excitation light, at least a portion of the first excitation light is converted into a first laser beam by the first wavelength conversion device, and a combined light of the first laser beam and the unconverted first excitation light is from the first An exit surface of a wavelength conversion device is emitted, and the first wavelength conversion device is disposed at a focus position of the reflection device.

In particular, the first excitation light source may be a laser light source that excites the light generated by the wavelength conversion device to have high brightness and can provide an emission density superior to that of the LED. Similarly, the light emitted by the wavelength conversion device is approximately Lambertian-distributed light, and is capable of providing a wide spread angle illuminance distribution under the reflection of the reflecting device.

In one embodiment, the first excitation source is a blue laser source, the first wavelength conversion device comprises a yellow wavelength conversion material, and the blue light is converted by the yellow wavelength conversion material into a yellow light-receiving laser, the yellow light being subjected to laser light and unabsorbed blue light. The combined light becomes white light and then emerges.

In one embodiment, the reflecting device is a reflecting cup, the inner space of which is a cavity, and the reflecting surface is disposed on the inner wall of the reflecting cup. The reflecting surface can be, for example, a metal reflective film.

In one embodiment, the reflecting device is a total reflection lens, and the reflecting surface is a total reflection surface of the total reflection lens. The internal space is a solid lens, and "the first light source is disposed in the reflecting device" is understood to mean that the first light source is disposed in the recess of the incident end of the total reflection lens.

In one embodiment, the light source module further includes a light shielding film disposed on the light exit opening, the light shielding film is movably disposed; when the light shielding film is in the first position, and the first light source and the second light source When the component is turned on, the light source module outputs a first form of light; when the light shielding film is in the second position, and the first light source is turned on, the light source module outputs a second form of light.

In one embodiment, when the light shielding sheet is in the first position, the light shielding sheet is located on the optical path of the light reflected by the first light source through the reflecting surface for changing the light distribution pattern of the light; when the light shielding sheet is in the second position The light shielding film does not block the light of the first light source.

In one embodiment, at least a portion of the reflective surface is a portion of an ellipsoid, a light emitting surface of the first light source is disposed at a first focus of the ellipsoid, and a first position of the light mask is disposed on the ellipsoid a second focus; the light source module further includes a lens, a front focus of the lens coincides with the second focus, and the light output by the second light source assembly is parallel to an optical axis direction of the lens The internal space of the reflecting device propagates. Wherein, the front focus of the lens refers to the focus of the lens near the reflecting device.

The present invention also provides a vehicular headlamp comprising the light source module of any of the above.

In one embodiment, the vehicular headlamp is a near-integrated lamp, and when the first light source is turned on, the vehicular headlight emits a low beam, and when the first light source and the second light source component are simultaneously turned on, The car used a headlight to make a high beam.

In one embodiment, the vehicular headlamp includes a bottom support body, the first light source of the light source module, the second light source assembly, and the reflecting device are disposed on the surface of the bottom support body, and the visor is away from the second light source assembly relative to the reflective device. The side surface is disposed on the side of the bottom support body, the side of the light shielding sheet away from the bottom support body is provided with a lens, the light shielding sheet is movable, and the first light source, the second light source assembly and the light shielding sheet are matched to realize the vehicle front view. The lamp outputs different forms of light.

In one embodiment, a side of the bottom support away from the first light source, the second light source component, and the reflecting device includes a heat sink for discharging heat generated by the light source module when the light source module operates.

In one embodiment, the heat sink and the bottom support are integrated, and at the same time function as physical support and heat dissipation.

In one embodiment, the vehicular headlamp is a high beam, the light source module does not include a visor, the illuminance distribution provided by the first source is used to obtain an illumination area with a wide spread angle, and the illuminance distribution provided by the second light source component Used to enhance central illumination.

In one embodiment, the vehicular headlamp is a low beam, the light source module includes a light shielding structure, and the light shielding structure is immovable for forming a cutoff line, and the output light provided by the first light source and the second light source assembly The illuminance distribution is corrected to light that satisfies the requirements for low beam illumination.

DRAWINGS

1 is a schematic structural view of an embodiment of a light source module of the present invention;

2 is a schematic structural view of another embodiment of a light source module according to the present invention;

3 is a schematic structural view of an embodiment of a light shielding sheet of the present invention;

4 is a schematic structural view of an embodiment of a spot pattern of a first form of light according to the present invention;

5 is a schematic structural view of an embodiment of a spot pattern of a second form of light according to the present invention;

6 is a schematic structural view of still another embodiment of a light source module according to the present invention;

7 is a schematic structural view of still another embodiment of a light source module according to the present invention;

Figure 8 is a schematic view showing the structure of an embodiment of a vehicle headlamp according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The present invention provides a light source module including a first light source, a second light source assembly, and a reflection device, in order to solve the technical problem that the brightness of the center of the automobile headlamp is not high and the structure is poor. The first light source is disposed on the first light source. In a space surrounded by the reflecting device, the light emitting surface of the first light source faces the reflecting surface of the reflecting device, and the reflecting surface is configured to reflect and guide the light outputted by the first light source to the light exit port of the reflecting device; the end of the reflecting device away from the light emitting port An incident region is disposed, and the light output by the second light source component is incident through the incident region, directly passes through the internal space of the reflective device, and exits through the light exit port. Since the incident region is located at the end of the reflecting device away from the lens, the received luminous flux from the first light source approaches "0", so that the second light source component can be passed without affecting the output light utilization rate of the first light source. The output light increases the center brightness of the light output by the light source module. And directly arranging the incident region of the second light source assembly on the end of the reflecting device such that the light of the first light source reflected by the reflecting surface of the reflecting device and the light of the second light source component incident through the incident region pass through the light exit port of the reflecting device The light is guided by the reflection device at the same time, and the light of the first light source and the second light source component is guided at the same time, and the structure is simple and compact, and the optical expansion loss during the general geometric combination is avoided. . The details are explained below.

Please refer to FIG. 1. FIG. 1 is a schematic structural view of an embodiment of a light source module according to the present invention.

In this embodiment, the light source module 100 can be applied to a lighting device of a vehicle such as a vehicle, such as a vehicle headlight, etc., in a case where the light environment is poor, a device that needs to be illuminated around the vehicle to indicate the vehicle driving can be It is understood that the vehicle front light, the rear light, and other parts of the lighting device can be used in the applicable environment of the light source module 100 provided in this embodiment, thereby providing the vehicle with high central illumination. The light source module of the invention can also be applied to other lamps, such as searchlights, stage lights, ship/airlights and the like.

In this embodiment, the light source module 100 includes a first light source 101, a second light source assembly 102, and a reflecting device 103. The first light source 101 is disposed in a space surrounded by the reflecting device 103, and the light emitting surface of the first light source 101 faces the reflection. The reflecting surface 103a of the device 103. The reflecting surface 103a reflects and guides the light output from the first light source 101 to the light exit port 110 of the reflecting device. An incident region 111 is disposed at an end of the reflecting device 103 away from the light exit opening 110. The light output by the second light source assembly 102 is incident on the inside of the reflecting device 103 through the incident region 111, and the light directly passes through the internal space of the reflecting device 103, and The light exit port 110 is emitted.

The first light source 101 may be a halogen bulb, a xenon bulb, an LED (Light Emitting Diode), or the like, and is a main source of light output by the light source module 100. The light path of the light output by the first light source 101 is in the light source module 100. After the adjustment and output, the illumination function of the light source module 100 is realized. The first light source 101 is characterized in that the light emitting surface emits light having an approximate Lambertian distribution, and the light distribution is uniform, which is favorable for forming an illuminance distribution of a wide spread angle after being reflected by the reflecting device.

In this embodiment, the LED is used as the first light source 101, and the components of the light source module 100 provided in the embodiment are reliably combined into a whole structure by using the advantages of simple structure, fast switching speed, high reliability and the like. This embodiment is only for the purpose of discussion, and is not limited to the type of the first light source 101 of the light source module 100 provided in this embodiment. The first light source 101 type described in this embodiment includes but is not limited to the above, The first light source 101 type that can realize the function of reliably combining the components of the light source module 100 and capable of outputting different forms of light by the light source module 100 can be the first light source 101 type as described in this embodiment. Make a limit.

The first light source 101 may include one or more light emitting diodes, and the number of the light emitting diodes included is determined according to the light energy outputted by the light emitting diodes and the light flux of the light source module 100. The light output of the light emitting diodes included in the first light source 101 is more The larger the luminous flux of the light source module 100, the smaller the number of light-emitting diodes that the first light source 101 needs to include, which is not limited herein.

In other embodiments of the invention, the first source of light in the form of an LED may also be replaced with a laser fluorescent source, as will be described in detail below.

In this embodiment, the second light source assembly 102 is a laser, and the second light source assembly may further include a collecting lens (group). The exiting light of the laser has a small divergence angle and a high optical power density. By using a second light source assembly including a laser, brighter illumination can be achieved with a smaller incident area, and the smaller the incident area means Less loss of the first light source. The laser can be, for example, a laser semiconductor light source such as a laser diode, a laser diode array, etc., and the laser can be other types of laser sources. The function of the concentrating lens is mainly to collimate the light emitted by the laser.

The laser as the second light source component may be a monochromatic laser or a multi-color laser. A single-color laser (such as a blue laser or a red laser) can display a unique color in a portion of the illumination area of the light source module to achieve a predetermined effect. For example, when the laser of the second light source component is blue light, it can be brighter at night; when the laser of the second light source component is red light, it can be brighter in foggy/rainy days. High-brightness white light can be synthesized by a multi-color laser such as a red, green, and blue three-color laser. Of course, the laser of the second light source component can also emit different colors of light as needed by a preset command or a person's operation while including a multi-color laser. For example, the second light source assembly includes both a red laser and a blue laser, and the blue laser is turned on at ordinary nights, and the red laser is turned on in rainy and foggy days.

In other embodiments of the invention, the second light source assembly may also be replaced with a laser fluorescent light source, as will be described in detail below.

In this embodiment, the reflecting device 103 is a reflecting cup, the inner space is a cavity, and the reflecting surface 103a is disposed on the inner wall of the reflecting cup, and the reflecting surface may be, for example, a metal reflective film. The reflector cup forms a semi-enclosed structure enclosing the first source such that the first source is in the interior space of the reflector cup.

In other embodiments of the invention, the reflecting means may also be a total reflection lens, as will be described in more detail below.

In this embodiment, the reflection device 103 includes a light exit port 110 and an incident region 111. The light exit port 110 is disposed opposite to the incident region 111. The light exit port 110 corresponds to the cup mouth of the reflective cup, and the incident region 111 corresponds to the cup bottom of the reflective cup, and The area of the light exit opening 110 is much larger than the area of the incident area 111.

In the present embodiment, the minimum exit angle of the light emitted by the first light source 101 toward the incident region 111 is θ, θ>60°. In this embodiment, a major portion of the light emitted by the first light source is incident on the reflecting surface of the reflecting device 103, and is reflected toward the light exit port. Only a small portion of the light having an exit angle greater than 60° is incident on the incident region and is lost. Here, the exit angle refers to an angle from a normal to a light emitting surface of the first light source to an outgoing light. In actual products, a large number of commercially available LEDs have an illumination angle of 120° (ie, ±60° centered on the normal), and light having an exit angle greater than 60° is almost negligible, so the incident area is set larger than the first light source. In the angular range of the exit angle of 60°, the loss of the light emitted from the first light source can be reduced, and the end space of the reflecting device can be effectively utilized. Of course, the angular limit of θ is not a necessary feature of the present invention, and in other embodiments of the present invention, the θ angle may be other values.

Please refer to FIG. 2. FIG. 2 is a schematic structural view of another embodiment of the light source module of the present invention.

In the embodiment, the light source module 200 includes a first light source 201, a second light source assembly 202, a reflection device 203, a light shielding sheet 204, and a lens 205. The second light source assembly 202, the first light source 201, and the light shielding sheet 204 are sequentially disposed in a direction close to the lens 205. The first light source 201 is disposed in a space surrounded by the reflecting device 203, and the reflecting device 203 is disposed opposite to the first light source 201. The light emitting surface of a light source 201 faces the reflecting surface of the reflecting device 203. An incident region 211 is disposed at an end of the reflecting device 203 remote from the light exit port 210. The second light source assembly 202 is also disposed at an end of the reflecting device 203 away from the lens 205, and inputs the output light to the inside of the reflecting device 203 through the incident region 211.

In the present embodiment, the reflecting surface reflects and guides the light output from the first light source 201 to the light exit port 210 of the reflecting device, and then exits through the lens 205. The light output from the second light source assembly 202 passes directly through the inner space of the reflecting device 203 in a direction parallel to the optical axis 206 of the lens 205, and propagates through the light exit port 210 to the lens 205 to be emitted.

The first difference from the embodiment shown in FIG. 1 is that, in this embodiment, the second light source component 202 is a laser fluorescent light source. Specifically, the second light source assembly 202 includes a second excitation light source 208, a second wavelength conversion device 209, and a collecting lens 207. The second excitation light source 208 emits the second excitation light, and the second excitation light is converted into the second laser light by the second wavelength conversion device 209, and the second laser light is combined with the remaining portion of the second excitation light that is not converted. The light is emitted from the exit surface of the second wavelength conversion device 209, collected by the collecting lens 207, and incident on the reflecting device 203 through the incident region 211.

Unlike the pure laser source in the embodiment of Fig. 1, the second light source assembly 202 of the present embodiment is capable of providing a wider range of wavelengths of light. In particular, in a specific embodiment of the embodiment, the second excitation light source is a blue laser light source, and the second wavelength conversion device comprises a yellow wavelength conversion material (the second wavelength conversion device may include, for example, YAG:Ce phosphor, fluorescent glass, Fluorescent ceramics, fluorescent single crystals, etc., blue light is converted into a yellow light-receiving laser by a yellow wavelength converting material, and the yellow light is combined with the unabsorbed blue light to become white light and then emitted. The white light obtained by laser fluorescence has high brightness and high light conversion efficiency, and is suitable for lighting applications. Of course, the present invention is not limited to the technical solution of the blue laser excitation yellow wavelength conversion material, and may be an excitation light source of other colors or a wavelength conversion material of other colors.

In addition, in the modified embodiment of the embodiment, the wavelength conversion device can also emit only the laser light (either the sensor light can be completely absorbed, or the filter can be prevented from entering the reflection device by the filter), instead of the excitation light and the light receiving device. The mixed light of the laser. For example, in a case where the second excitation light source is a blue light source, the second wavelength conversion device includes a yellow wavelength conversion material, and the second light source component emits only yellow light, and the yellow light forms a central yellow spot of the illumination region of the light source module, which is particularly suitable. Long distance exposure in rainy and foggy days.

In the embodiment shown in FIG. 2, the second wavelength conversion device is a transmissive wavelength conversion device, that is, the excitation light incident surface of the wavelength conversion device is different from the laser light exit surface. In other embodiments of the present invention, the second wavelength conversion device may also be a reflective wavelength conversion device, that is, the excitation light incident surface of the wavelength conversion device and the laser-exposed surface are the same surface, and the wavelength conversion device needs to be converted with wavelength. A reflective layer or a reflective device is disposed on the opposite side of the incident surface of the device. For variations of the transmissive wavelength conversion device and the reflective wavelength conversion device, reference may be made to the fluorescent color wheel, which will not be described again. In other embodiments of the present invention, the wavelength conversion device may also be an integrator rod in which a wavelength conversion material is disposed, and the like, and will not be described again.

In the present embodiment, the collecting lens 207 is used to collect and collect the light emitted from the second wavelength converting device 209, and reduce the divergence angle of the light beam incident on the incident region 211, so that the output light of the second light source component 202 is more concentrated. It ensures that the output light passes through the internal space of the reflecting device without touching the reflecting surface of the reflecting device, and can be used as a light source that only strengthens the central illuminance.

In a preferred embodiment, the collecting lens 207 limits the divergence half angle of the light beam incident to the incident region 211 to within 8 (i.e., ± 8° with respect to the optical axis). The technical solution enables the light of the second light source component incident from the incident region to propagate for a relatively long distance d without being affected by the reflecting device or the first one even if the first light source can reach the incident region at a minimum angle of 60°. Either side of the light source is blocked (disposed in the direction of the optical axis of the incident light along the second light source assembly, and the distance from the first light source to the incident area is a, then d>2a).

Different from the embodiment shown in FIG. 1 , the light source module of the embodiment further includes a light shielding sheet 204 , wherein the light shielding sheet 204 is movably disposed in a module space between the first light source 201 and the lens 205 ; The second light source assembly 202 and the light shielding sheet 204 cooperate to realize the light source module 200 outputting different forms of light.

Specifically, when the light shielding sheet 204 is in the first position S1, the first light source 201 and the second light source component 202 are turned on, the light source module 200 outputs the first form of light; when the light shielding sheet 204 is in the second position S2, the first light source When the 201 is turned on, the light source module 202 outputs the second form of light. Wherein, when the light shielding sheet 204 is in the second position S2, the light shielding sheet 204 is located on the optical path of the light reflected by the first light source 201 through the reflecting surface 203, for changing the light distribution pattern of the light; when the light shielding sheet 204 is in the first At the position S1, the light shielding sheet does not block the light of the first light source.

As shown in FIG. 3, it is a schematic structural view of one embodiment of the light shielding sheet 204. The visor 204 achieves a modification of the light distribution by a stepped structure. It can be understood that the shape of the light shielding sheet is not limited to the structure shown in FIG.

In the visor structure shown in FIG. 3, the spot pattern of the first form of light is as shown in FIG. 4, wherein the area A is a spot corresponding to the light output by the first light source 201, and the area B is corresponding to the second light source component 202. The spot of the light output. The spot pattern of the second form of light is as shown in FIG. 5, wherein the area A' corresponds to the spot of the light output by the first light source 201.

When the vehicle headlamp adopts the light source module in the embodiment, the vehicle headlight is a near-integrated lamp, the first form of light is high beam, and the second form of light is low beam. When the first light source is turned on, the vehicle headlight emits a low beam; when the first light source and the second light source assembly are simultaneously turned on, the vehicle headlight emits a high beam.

In the present invention, a light shielding sheet is not essential. When the light source module does not include the light shielding film, the light source module can be used as a high beam light for the vehicle headlight, wherein the illumination distribution provided by the first light source is used to obtain an illumination area with a wide spread angle, and the second light source component provides The illuminance distribution is used to enhance the central illumination.

In the present invention, the light shielding sheet may also be provided as a non-movable light shielding structure for forming a cut-off line of the low beam, and correcting the illuminance distribution of the output light provided by the first light source and the second light source assembly to satisfy the low beam illumination requirement. Light.

In the embodiment shown in FIG. 2, the light source module 200 also adds a lens 205 with respect to the embodiment shown in FIG. The reflecting surface 203 may be disposed as a part of an ellipsoidal surface, the light emitting surface of the first light source 201 is disposed at a first focus of the ellipsoidal surface, and the first position of the light shielding sheet 204 is disposed at a second focus of the ellipsoidal surface. The front focus F1 of the lens 205 coincides with the second focus of the ellipsoid. The light output from the second light source unit 202 propagates in the inner space of the reflecting means in a direction parallel to the optical axis of the lens 205.

It can be understood that the second light source assembly 202, the light shielding sheet 204 and the lens 205 in the embodiment shown in FIG. 2 can be independently replaced or added to the embodiment shown in FIG. 1.

FIG. 6 is a schematic structural view of still another embodiment of a light source module according to the present invention. The light source module 300 includes a first light source 301, a second light source assembly 302, and a reflecting device 303. The first light source 301 is disposed in a space surrounded by the reflecting device 303, and the light emitting surface of the first light source 301 faces the reflecting surface of the reflecting device 303. The reflecting surface reflects and guides the light output from the first light source 301 to the light exit port 310 of the reflecting device. An incident region 311 is disposed at an end of the reflecting device 303 remote from the light exit port 310. The light output by the second light source assembly 302 is incident on the inside of the reflecting device 303 through the incident region 311, and the light directly passes through the internal space of the reflecting device 303, and The light exit port 310 is emitted.

Different from the embodiment shown in FIG. 1, the first light source 301 in the embodiment of FIG. 6 is a fluorescent excitation light source, including a first excitation light source 312 and a first wavelength conversion device 313. The exit surface of the first wavelength conversion device 313 is the light emitting surface of the first light source 301, the first excitation light source 312 emits the first excitation light, and at least part of the first excitation light is converted into the first laser light by the first wavelength conversion device 313. A combined light of the laser and the unconverted first excitation light is emitted from the exit surface of the first wavelength conversion device 313. The first wavelength conversion device 313 is disposed at a focus position of the reflection device 303. It can be understood that the first light source in the embodiment of FIG. 6 can also be replaced by a reflective laser fluorescent light source. The technical solution can make the excitation light enter the incident surface of the wavelength conversion device through the through hole by providing a through hole on the reflective surface. (ie its exit surface), no longer repeat here.

The first excitation light source 312 may be a laser light source that excites light generated by the wavelength conversion device to have high brightness and can provide a light-emitting density superior to that of the LED. Similarly, the light emitted by the wavelength conversion device is approximately Lambertian-distributed light, and is capable of providing a wide spread angle illuminance distribution under the reflection of the reflecting device.

In a specific embodiment, the first excitation light source is a blue laser light source, the first wavelength conversion device comprises a yellow wavelength conversion material, and the blue light is converted into a yellow light-receiving material by the yellow wavelength conversion material, the yellow light being laser-irradiated and unabsorbed. The blue light merges into white light and then exits.

In the embodiment of Fig. 6, the second light source assembly 202 can also be implemented as described in the various embodiments above. The light source module 300 can generally increase the structure of a light shielding film, a lens, and the like.

FIG. 7 is a schematic structural view of still another embodiment of a light source module according to the present invention. The light source module 400 includes a first light source 401, a second light source assembly 402, and a reflecting device 403. The first light source 401 is disposed in a space surrounded by the reflecting device 403, and the light emitting surface of the first light source 401 faces the reflecting surface 403a of the reflecting device 403. . The reflecting surface reflects and guides the light output from the first light source 401 to the light exit port 410 of the reflecting device. An incident region 411 is disposed at an end of the reflecting device 404 away from the light exit port 410. The light output by the second light source assembly 402 is incident on the inside of the reflecting device 403 through the incident region 411, and the light directly passes through the internal space of the reflecting device 403, and The light exit port 410 is emitted.

Different from the embodiment shown in Fig. 1, the reflection device 403 in the embodiment of Fig. 7 is a total reflection lens, and the reflection surface 403a is a total reflection surface of the total reflection lens. Here, the internal space of the reflecting device 403 is a solid lens, and "the first light source is disposed in the reflecting device" can be understood as the first light source 401 is disposed in the pit of the incident end of the total reflection lens. As shown in FIG. 1, an opening 411 is provided at the incident end of the total reflection lens 403, and the second light source assembly 402 is directly incident through the opening.

It can be understood that the reflecting device in each embodiment described above can also be replaced with the reflecting device of the total reflection lens type in FIG. 7 , and details are not described herein again.

Please refer to FIG. 8. FIG. 8 is a schematic structural view of an embodiment of a vehicle headlamp according to the present invention.

In this embodiment, the vehicular headlamp 500 includes a bottom support body 501 and a light source module (not shown), wherein the light source module is the light source module described in the above embodiments, and its structure and operation The principle has been elaborated in the above embodiments, and will not be described again here. The first light source 502, the second light source assembly 503, and the reflection device 504 of the light source module are disposed on the surface of the bottom support body 501, and the light shielding sheet 505 is disposed away from the side of the reflection device 504 away from the second light source assembly 503 and disposed on the bottom support body 501. On the side, the side of the light shielding sheet 505 away from the bottom support body 501 is provided with a lens 506, and the light shielding sheet 505 is movable. Specifically, the shielding surface of the light shielding sheet 505 faces the lens 506 and can be perpendicular to the horizontal plane perpendicular to the optical axis of the lens 506. The direction of the movement, the first light source 502, the second light source assembly 503, and the light shielding sheet 505 cooperate to realize that the vehicle headlamp 500 outputs different forms of light.

One side of the bottom support 501 away from the first light source 502, the second light source assembly 503, and the reflective device 504 includes a heat sink 507 for discharging heat generated by the light source module when the light source module is in operation.

Optionally, the heat sink 507 and the bottom support body 501 may be an integrated structure, and the first light source 502, the second light source component 503, and the reflection device 504 of the light source module are disposed on one side surface of the heat sink 507 to The heat dissipation function of the light source module works as a light source module. Of course, it can be understood that the heat sink 507 and the bottom support body 501 are not integrated, and the heat sink 507 is disposed away from the bottom support body 501. One side of the first light source 502, the second light source assembly 503, and the reflection device 504, the heat sink 507 and the bottom support body 501 may be adhered and fixed by a viscous gel, or may be fixedly connected by a connector such as a bolt. , not limited here.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A light source module, wherein the light source module comprises a first light source, a second light source component and a reflecting device;

The first light source is disposed in a space surrounded by the reflecting device, and a light emitting surface of the first light source faces a reflecting surface of the reflecting device, and the reflecting surface is configured to reflect light output by the first light source And guiding the light exit to the reflecting device;

An end of the reflecting device remote from the light exit opening is provided with an incident area, and light output by the second light source component is incident through the incident area, directly passes through an inner space of the reflective device, and passes through the light exit port. Exit.
The light source module according to claim 1, wherein the second light source assembly comprises a laser and a collecting lens.
The light source module according to claim 1, wherein the second light source assembly comprises a second excitation light source, a second wavelength conversion device and a collecting lens, and the second excitation light source emits a second excitation light, at least Part of the second excitation light is converted into a second laser beam by the second wavelength conversion device, and the combined light of the second laser beam and the unconverted second excitation light is collected by a collecting lens and then incident to the Reflecting device.
The light source module according to claim 1, wherein an angle of incidence of the light emitted by the first light source toward the incident region is greater than 60°.
The light source module according to claim 1, wherein the light emitting surface of the first light source is disposed at a focus position of the reflecting device, and the first light source is an LED light source.
The light source module according to claim 1, wherein the first light source comprises a first excitation light source and a first wavelength conversion device, and an exit surface of the first wavelength conversion device is a light emission of the first light source The first excitation light source emits a first excitation light, and at least a portion of the first excitation light is converted into a first laser light by the first wavelength conversion device, the first laser light and the first unconverted light The combined light of the excitation light is emitted from the exit surface of the first wavelength conversion device, and the first wavelength conversion device is disposed at a focus position of the reflection device.
The light source module according to claim 1, wherein said reflecting means is a total reflection lens, and said reflecting surface is a total reflection surface of said total reflection lens.
The light source module according to claim 1, further comprising a light shielding film disposed on the light exiting opening, wherein the light shielding film is movably disposed;

When the light shielding sheet is in the first position, and the first light source and the second light source component are turned on, the light source module outputs the first form light;

The light source module outputs a second form of light when the light shielding sheet is in the second position and the first light source is turned on.
The light source module according to claim 8, wherein at least a part of the reflecting surface is a part of an ellipsoid, and a light emitting surface of the first light source is disposed at a first focus of the ellipsoid, the light shielding film The first position is set at the second focus of the ellipsoid;

The light source module further includes a lens, a front focus of the lens coincides with the second focus, and the light output by the second light source assembly is in an internal space of the reflective device in a direction parallel to an optical axis of the lens propagation.
A vehicular headlamp, comprising the light source module according to any one of claims 1 to 9, wherein when the first light source is turned on, the vehicular headlight emits a low beam, When the first light source and the second light source assembly are simultaneously turned on, the vehicle headlight emits a high beam.