Light source device and vehicle lamp

Abstract

The present application relates to the field of optical imaging technology, and discloses a light source device and a headlight, wherein the light source device includes a light emitting module, a light modulator, a lens module, and a controller. The plurality of micromirrors included in the light modulator are rotatably arranged on the optical path where the designated light beam is located, and when the micromirrors are respectively in a first rotation position and a second rotation position, the designated light beam is reflected by the micromirrors to form a first reflected light beam and a second reflected light beam, respectively. The lens module is used to image the first reflected light beam and the second reflected light beam, respectively, to generate a first outgoing light beam and a second outgoing light beam, and the outgoing angles of the first outgoing light beam and the second outgoing light beam belong to a first angle interval and a second angle interval, respectively. Since the outgoing angles corresponding to the two outgoing light beams emitted from the lens module are different, the second outgoing light beam can play a role in expanding the outgoing angle on the basis of the first outgoing light beam, so as to expand the illumination angle of the headlight equipped with the light source device.

Description

Technical Field

[0001] The present application relates to the field of optical imaging technology, and more specifically, to a light source device and a vehicle lamp. Background Art

[0002] With the increasing popularity and development of vehicles, adaptive high beams are becoming more and more popular among consumers due to their intelligent headlight systems. Existing adaptive high beams can automatically adjust the brightness, lighting range and other parameters of the high beams according to changes in the road, weather and surrounding environment to improve the safety of vehicles during driving.

[0003] Specifically, in order to realize the intelligentization of adaptive high beam lighting, R&D personnel will use digital light processing (DLP) technology in adaptive high beam lighting. The core of DLP technology is the digital micro-mirror device (DMD). DMD is a micro-mirror array composed of millions of micro-mirrors. Each micro-mirror can independently control the deflection angle to reflect the light emitted by the light source to realize the intelligent lighting of high beam lighting.

[0004] However, existing high beam lights have the problem of a small illumination angle (Field of View, FOV). Summary of the invention

[0005] The present application provides a light source device and a vehicle lamp.

[0006] According to a first aspect of the present application, the present application provides a light source device, which includes a light emitting module, a light modulator, a lens module and a controller. The light emitting module is used to generate a designated light beam. The light modulator includes a plurality of micromirrors, which are rotatably arranged on the light path where the designated light beam is located, each micromirror has a first rotation position and a second rotation position, and when the micromirror is in the first rotation position, the designated light beam is reflected by the light modulator to form a first reflected light beam; when the micromirror is in the second rotation position, the designated light beam is reflected by the micromirror to form a second reflected light beam. The lens module is arranged on the light path where the first reflected light beam and the second reflected light beam are located; the lens module is used to image the first reflected light beam to generate a first emitted light beam whose emission angle belongs to a first angle interval; the lens module is used to image the second reflected light beam to generate a second emitted light beam whose emission angle belongs to a second angle interval; the second angle interval does not overlap with at least part of the first angle interval. The controller is electrically connected to the light modulator, and is used to control at least one micromirror to switch between the first rotation position and the second rotation position.

[0007] According to the second aspect of the present application, the present application also provides a light source device, which includes a light-emitting module, a reflector, a lens module and a controller. The light-emitting module is used to generate a designated light beam. The reflector is rotatably arranged on the optical path where the designated light beam is located, and the reflector has a first rotation position and a second rotation position. When the reflector is in the first rotation position, the designated light beam is reflected by the reflector to form a first reflected light beam; when the reflector is in the second rotation position, the designated light beam is reflected by the reflector to form a second reflected light beam. The lens module is arranged on the optical path where the first reflected light beam and the second reflected light beam are located; the lens module is used to image the first reflected light beam to generate a first emitted light beam whose emission angle belongs to the first angle interval; the lens module is used to image the second reflected light beam to generate a second emitted light beam whose emission angle belongs to the second angle interval; the second angle interval does not overlap with at least part of the first angle interval. The controller is electrically connected to the reflector, and is used to control the reflector to switch between the first rotation position and the second rotation position, so that the first reflected light beam and the second reflected light beam are incident on the lens module in a time-sharing manner.

[0008] According to a third aspect of the present application, the present application also provides a vehicle lamp, which includes a housing and the above-mentioned light source device, and the light source device is arranged in the housing.

[0009] The present application provides a light source device and a vehicle lamp, wherein a controller in the light source device can control a plurality of micromirrors included in a light modulator to switch between a first rotation position and a second rotation position, and when the micromirror rotates to the first rotation position, the emission angle of a first outgoing light beam formed by imaging through a lens module belongs to a first angle interval. When the micromirror rotates to the second rotation position, the emission angle of a second outgoing light beam formed by imaging through a lens module belongs to a second angle interval. The second angle interval does not overlap with at least a portion of the first angle interval.

[0010] Since the exit angles corresponding to the first exit light beam and the second exit light beam emitted from the lens module are at least partially different, the second exit light beam can expand the exit angle on the basis of the first exit light beam. Therefore, when the light source device is applied to a vehicle lamp, the lighting angle of the vehicle lamp can be expanded to improve the lighting effect of the vehicle lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1It is a schematic diagram of the structure of a vehicle lamp provided in an embodiment of the present application.

[0013] Figure 2 yes Figure 1 The structural schematic diagram of the light source device in the vehicle lamp is shown.

[0014] Figure 3 yes Figure 2 A schematic structural diagram of a light modulator in a light source device is shown.

[0015] Figure 4 yes Figure 2 A schematic structural diagram of a light emitting module in a light source device is shown.

[0016] Figure 5 yes Figure 1 Another structural schematic diagram of a light source device in a vehicle lamp is shown.

[0017] Figure 6 It is a schematic diagram of the emission angle range corresponding to the first emission light beam and the second emission light beam provided in an embodiment of the present application.

[0018] Figure 7 yes Figure 5 A schematic structural diagram of a lens module in a light source device is shown.

[0019] Figure 8 It is a schematic diagram of the energy intensities corresponding to the first outgoing light beam and the second outgoing light beam provided in an embodiment of the present application.

[0020] Fig. 9 yes Figure 1 Another structural schematic diagram of a light source device in a vehicle lamp is shown.

[0021] Fig.10 yes Figure 1 Another structural schematic diagram of the light source device in the vehicle lamp is shown.

[0022] Fig.11 yes Fig.10 A schematic structural diagram of a lens module in a light source device is shown. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0024] See also Figure 1The embodiment of the present application provides a light source device 100 and a vehicle lamp 200 equipped with the light source device 100, and the vehicle lamp 200 is used to provide road lighting for the vehicle and send a driving signal (for example, a turn signal). Specifically, the vehicle lamp 200 can be a high beam lamp, for example, an adaptive high beam lamp based on DLP technology.

[0025] In this embodiment, the vehicle lamp 200 may include a light source device 100 and a housing 210, wherein the light source device 100 is disposed in the housing 210, and the housing 210 serves to fix and protect the light source device 100. The light source device 100 is used to generate an illumination beam L, and the illumination beam L may be emitted to the outside through a light exit window disposed on the housing 210.

[0026] See also Figure 2 and Figure 3 The first embodiment of the present application provides a light source device 100, which may include a light emitting module 10, a light modulator 30, a lens module 50, and a controller 70. The light emitting module 10 is used to generate a designated light beam E. The light modulator 30 may include a plurality of micromirrors 310, which are rotatably arranged on the optical path where the designated light beam E is located. Each micromirror 310 has a first rotation position and a second rotation position. When the micromirror 310 is in the first rotation position, the designated light beam E is reflected by the micromirror 310 to form a first reflected light beam F1; when the micromirror 310 is in the second rotation position, the designated light beam E is reflected by the micromirror 310 to form a second reflected light beam F2. The second reflected light beam F2 does not overlap with the first reflected light beam F1.

[0027] The lens module 50 is arranged on the optical path where the first reflected light beam F1 and the second reflected light beam F2 are located, and the lens module 50 is used to image the first reflected light beam F1 to generate a first outgoing light beam O1 whose outgoing angle belongs to the first angle interval. The lens module 50 is also used to image the second reflected light beam F2 to generate a second outgoing light beam O2 whose outgoing angle belongs to the second angle interval. The second angle interval does not overlap with at least part of the first angle interval. The controller 70 is electrically connected to the optical modulator 30, and is used to control at least one micromirror 310 to switch between the first rotation position and the second rotation position.

[0028] Since the emission angles corresponding to the first emission light beam O1 and the second emission light beam O2 emitted from the lens module 50 are at least partially different, the second emission light beam O2 can expand the emission angle on the basis of the first emission light beam O1. Therefore, when the light source device 100 is applied to the vehicle lamp 200, the lighting angle of the vehicle lamp 200 can be expanded to improve the lighting effect of the vehicle lamp 200.

[0029] It should be noted here that the lens module 50 may include one or more lenses, and the one or more lenses are used to image the first reflected light beam F1 and the second reflected light beam F2 respectively. Among them, "imaging" the first reflected light beam can be understood as: there is a one-to-one mapping relationship between the spatial position of the micromirror in the first rotation position on the light modulator and the spatial angle of the first outgoing light beam, and the mapping relationship here can be understood as the imaging law of the lens. Similarly, "imaging" the second reflected light beam can be understood as: there is a one-to-one mapping relationship between the spatial position of the micromirror in the second rotation position on the light modulator and the spatial angle of the second outgoing light beam, and the mapping relationship here can be understood as the imaging law of the lens. In short, the first outgoing light beam O1 and the second outgoing light beam O2 in this embodiment are beams emitted after being imaged by one or more lenses, respectively. The specific implementation method of the lens module 50 is described in the following embodiments.

[0030] The specific implementation of the light source device 100 is introduced below.

[0031] See also Figure 4 , the light-emitting module 10 may include a light-emitting unit 120 and a converging lens 140. The light-emitting unit 120 is used to generate a designated light beam E. Specifically, the light-emitting unit 120 may include one or more of a laser generator, an LED chip, and a fluorescence conversion device. The designated light beam E may be a laser beam, an LED beam, a laser and LED mixed beam, a laser and fluorescence mixed beam, etc. This embodiment does not limit the specific implementation of the light-emitting unit 120.

[0032] The converging lens 140 is disposed on the optical path where the designated light beam E is located, and is used to converge and collect the designated light beam E to ensure that the designated light beam E can accurately enter the area where the light modulator 30 is located, and to improve the energy utilization efficiency of the designated light beam E. Specifically, the number of the converging lenses 140 can be one or more. Figure 4 In the illustrated embodiment, there are four converging lenses 140. Of course, researchers can adjust the number of converging lenses 140 according to actual needs of the light source device 100. For example, the number of converging lenses 140 can also be two, three, five, and so on.

[0033] In some possible embodiments, the light source device 100 is suitable for application in high beam lamps, and the central energy intensity of the designated light beam E needs to be greater than the edge energy intensity. That is, the energy distribution of the light spot corresponding to the designated light beam E is as follows: the energy intensity at the center of the light spot of the designated light beam E is greater than the energy intensity at the edge of the light spot, so as to achieve a high beam lighting effect that meets the requirements of traffic regulations. Therefore, in this embodiment, the light emitting module 10 may further include a Gaussian scatterer (not shown in the figure), which is arranged on the light path where the designated light beam E is located. For example, the Gaussian scatterer may be arranged between the light emitting unit 120 and the converging lens 140; when there are multiple converging lenses 140, the Gaussian scatterer may also be arranged between adjacent converging lenses 140. Since the light intensity of the light emitted through the Gaussian scatterer can be Gaussian distributed, the light spot energy of the designated light beam E can be non-uniformly distributed with strong intensity in the middle and weak intensity around, so as to meet the requirements of traffic regulations.

[0034] Please refer again Figure 2 , the light source device 100 may further include a guide 320. The guide 320 is disposed on the optical path where the designated light beam E is located, and is used to guide the designated light beam E to the light modulator 30, so that the designated light beam E can be smoothly incident on the area where the light modulator 30 is located. Figure 2 In the illustrated embodiment, the guide 320 may be a third reflector 3210, which is disposed on the optical path where the designated light beam E is located, and is used to reflect the designated light beam E to the light modulator 30. In this embodiment, the guide 320 is implemented in a non-prism manner, which can reduce the hardware cost of the light source device 100. Specifically, the third reflector 3210 deviates from the optical path where the first reflected light beam F1 and the second reflected light beam F2 are located, so as to ensure that the first reflected light beam F1 and the second reflected light beam F2 generated by reflection from the light modulator 30 can be smoothly incident on the lens module 50.

[0035] See also Figure 5 The guide 320 may also be a total internal reflection (TIR) ​​prism 3230, which is disposed on the optical path of the designated light beam E and is used to reflect the designated light beam E to the light modulator 30. The total internal reflection prism 3230 is also disposed on the optical path of the first reflected light beam F1 and the second reflected light beam F2 generated by the light modulator 30, and is used to transmit the first reflected light beam F1 and the second reflected light beam F2 to the lens module 50. Specifically, the total internal reflection prism 3230 may be composed of two triangular prisms.

[0036] In this embodiment, the optical modulator 30 may include a plurality of micromirrors 310, and the plurality of micromirrors 310 may be arranged in an M*N array. Each micromirror 310 has a first rotation position and a second rotation position, wherein the first rotation position may correspond to the On state of the micromirror 310, and the second rotation position may correspond to the Off state of the micromirror 310. That is, when the micromirror 310 is in the first rotation position, the first reflected light beam F1 formed by the specified light beam E after being reflected by the micromirror 310 may be understood as the On light corresponding to the On state. When the micromirror 310 is in the second rotation position, the second reflected light beam F2 formed by the specified light beam E after being reflected by the micromirror 310 may be understood as the Off light corresponding to the Off state. Specifically, the optical modulator 30 may be a digital micromirror device (DMD), and this embodiment does not limit the specific implementation of the optical modulator 30.

[0037] In some possible embodiments, each micromirror 310 may be individually controlled by the controller 70. Specifically, the controller 70 may control all micromirrors 310 to switch from a current position to another position; the controller 70 may also control a portion of the micromirrors 310 to switch from a current position to another position, and control the remaining portion of the micromirrors 310 to maintain the current position.

[0038] It should be noted that the multiple micromirrors 310 in the On state and the Off state respectively can only reflect light and do not modulate the designated light beam E. Therefore, when the light spot energy of the designated light beam E is non-uniformly distributed with strong center and weak surroundings, the light spot energy of the first reflected light beam F1 and the second reflected light beam F2 generated by the reflection of the multiple micromirrors 310 is also non-uniformly distributed with strong center and weak surroundings.

[0039] In this embodiment, the lens module 50 may include a first lens assembly 520, a second lens assembly 540 and a reflective assembly 560. The first lens assembly 520 is disposed on the optical path where the first reflected light beam F1 is located, and is used to adjust the emission angle of the first reflected light beam F1. The reflective assembly 560 and the second lens assembly 540 are sequentially disposed on the optical path where the second reflected light beam F2 is located, and the reflective assembly 560 is used to reflect the second reflected light beam F2 to the second lens assembly 540, and the second lens assembly 540 is used to adjust the emission angle of the second reflected light beam F2.

[0040] exist Figure 5In the illustrated embodiment, the optical axis of the first lens assembly 520 is parallel to the optical axis of the second lens assembly 540. The first lens assembly 520 is also used to image the first reflected light beam F1 to generate a first outgoing light beam O1. The second lens assembly 540 is also used to image the second reflected light beam F2 to generate a second outgoing light beam O2. The outgoing angle of the first outgoing light beam O1 belongs to the first angle interval, and the outgoing angle of the second outgoing light beam O2 belongs to the second angle interval.

[0041] The "emergence angle" is explained here. When the light source device 100 is used in a high beam, the illumination light beam L generated by the light source device 100 needs to meet the angle range required by traffic regulations. Specifically, in the horizontal direction, the horizontal emission angle (H FOV) needs to cover at least -12°~+12°; in the vertical direction, the vertical emission angle (V FOV) needs to cover at least 0~2°. The "horizontal direction" here refers to the direction parallel to the horizontal plane, and the "vertical direction" here refers to the direction perpendicular to the horizontal plane. The "horizontal plane" can be the plane where a vehicle in normal driving state is located. The "emergence angle" in this application refers to the horizontal emission angle (H FOV) in the horizontal direction.

[0042] Specifically, the second angle interval does not overlap with at least part of the first angle interval. For example, the second angle interval and the first angle interval can be two completely non-overlapping intervals, for example, the second angle interval is [-16°, 0°], and the first angle interval is (0°, +16°]. For another example, the second angle interval and the first angle interval can be two partially overlapping intervals, the second angle interval is [-16°, +2°], and the first angle interval is [-2°, +16°].

[0043] In some possible embodiments, the absolute value of the angle value in the first angle interval is less than or equal to the absolute value of the angle value in the second angle interval. For example, the second angle interval may include two sub-intervals, and the first angle interval is located between the two sub-intervals. Exemplarily, the second angle interval may be [-16°, -8°] and [+8°, +16°], and the first angle interval may be [-8°, +8°]. It should be noted here that the positive and negative signs corresponding to the angle values ​​represent the propagation direction of the light. For example, a light ray with an exit angle of -6° and a light ray with an exit angle of +6° are axially symmetric about the optical axis of the lens.

[0044] See also Figure 6 , Figure 6 Schematic diagram of the emission angle range corresponding to the first emission light beam O1 and the second emission light beam O2 provided in this embodiment. The first emission light beam O1 may correspond to Figure 6 In the area A1 and area A2, the second outgoing light beam O2 can correspond to Figure 6Specifically, the vertical emission angles corresponding to regions B1, A1, A2, and B2 are -2° to +6°; the horizontal emission angle corresponding to region B1 is -16° to -8°; the horizontal emission angle corresponding to region A1 is -8° to 0°; the horizontal emission angle corresponding to region A2 is 0° to +8°; and the horizontal emission angle corresponding to region B2 is +8° to +16°.

[0045] It should be noted here that Figure 6 Regions B1, A1, A2, and B2 in FIG. 1 only reflect the range of the emission angles, and do not reflect the imaging position and the distribution of the beam intensity. For example, the beam corresponding to region B1 and the beam corresponding to region A1 are not adjacent in space, and the two beams may overlap or partially overlap.

[0046] The specific optical path corresponding to the lens module 50 is described below.

[0047] See also Figure 3 and Figure 7 , the light modulator 30 may have a first reflection region 302 and a second reflection region 304, the first reflection region 302 and the second reflection region 304 may be two adjacent reflection regions on the light modulator 30, wherein a portion of the micromirrors 310 included in the light modulator 30 may be located in the first reflection region 302, and another portion of the micromirrors 310 included in the light modulator 30 may be located in the second reflection region 304. Specifically, the area corresponding to the first reflection region 302 and the second reflection region 304 may be the same, and the first reflection region 302 and the second reflection region 304 may be symmetrically arranged about the designated axis K.

[0048] exist Figure 7 In the illustrated embodiment, the designated light beam E may include a first designated sub-beam E1 and a second designated sub-beam E2, where the "first designated sub-beam E1" and the "second designated sub-beam E2" are named for the convenience of describing the optical path below. Specifically, the portion of the designated light beam E incident on the first reflection area 302 is referred to as the first designated sub-beam E1, and the portion of the designated light beam E incident on the second reflection area 304 is referred to as the second designated sub-beam E2.

[0049] The first designated sub-beam E1 is reflected by the multiple micro-mirrors 310 at the first rotational position corresponding to the first reflection area 302 to form a first reflected sub-beam F11, and the second designated sub-beam E2 is reflected by the multiple micro-mirrors 310 at the first rotational position corresponding to the second reflection area 304 to form a second reflected sub-beam F12. Further, the first lens assembly 520 is used to image the first reflected sub-beam F11 to generate a first outgoing sub-beam O11 whose outgoing angle belongs to the first angle sub-interval. The first lens assembly 520 is also used to image the second reflected sub-beam F12 to generate a second outgoing sub-beam O12 whose outgoing angle belongs to the second angle sub-interval, and the second angle sub-interval does not overlap with the first angle sub-interval, and both belong to the first angle interval.

[0050] For example, when the first angle interval is [-8°, +8°], the first angle sub-interval may be [0°, +8°], and the second angle sub-interval may be [-8°, 0°]. It is not difficult to find that the emission angle of the first emitted sub-beam O11 may correspond to Figure 6 In the area A2, the emission angle of the second emitted sub-beam O12 may correspond to Figure 6 Area A1 in .

[0051] Specifically, the first lens assembly 520 may include one or more lenses, and the lens may be a positive lens, a complex lens, a spherical lens, an aspherical lens, etc. This embodiment does not limit the specific implementation of the first lens assembly 520.

[0052] Therefore, when the plurality of micromirrors 310 are in the first rotation position, the first output light beam O1 emitted by the first lens assembly 520 may correspond to Figure 6 In the case where the spot energy of the first reflected light beam F1 is non-uniformly distributed with strong center and weak surroundings, the overall energy distribution corresponding to the regions A1 and A2 is also non-uniformly distributed with strong center and weak surroundings. In other words, the smaller the emission angle, the greater the spot energy. Figure 8 , Figure 8 The overall energy distribution corresponding to the area A1 and the area A2 is schematically shown, wherein the “white squares” correspond to areas with higher energy intensity, and the “grey squares” correspond to areas with lower energy intensity.

[0053] Please refer again Figure 7 The first designated sub-beam E1 is reflected by the multiple micro-mirrors 310 at the second rotation position corresponding to the first reflection area 302 to form a third reflected sub-beam F21, and the second designated sub-beam E2 is reflected by the multiple micro-mirrors 310 at the second rotation position corresponding to the second reflection area 304 to form a fourth reflected sub-beam F22.

[0054] Specifically, the reflection assembly 560 may include a first reflection mirror 5610 and a second reflection mirror 5630, wherein the first reflection mirror 5610 is disposed on the optical path where the third reflection sub-beam F21 is located, and is used to reflect the third reflection sub-beam F21 to the second lens assembly 540. The second lens assembly 540 is used to image the third reflection sub-beam F21 to generate a third outgoing sub-beam O21 whose outgoing angle belongs to the third angle sub-interval. The second reflection mirror 5630 is disposed on the optical path where the fourth reflection sub-beam F22 is located, and is used to reflect the fourth reflection sub-beam F22 to the second lens assembly 540. The second lens assembly 540 is used to image the fourth reflection sub-beam F22 to generate a fourth outgoing sub-beam O22 whose outgoing angle belongs to the fourth angle sub-interval, and the fourth angle sub-interval does not overlap with the third angle sub-interval, and both belong to the second angle interval.

[0055] For example, when the second angle interval is [-16°, -8°] and [+8°, +16°], the third angle sub-interval may be [-16°, -8°], and the fourth angle sub-interval may be [+8°, +16°]. It is not difficult to find that the emission angle of the third outgoing sub-beam O21 may correspond to Figure 6 In the area B1 in FIG. 1 , the emission angle of the fourth emitted sub-beam O22 may correspond to Figure 6 Therefore, when the plurality of micromirrors 310 are in the second rotation position, the second output light beam O2 emitted by the second lens assembly 540 may correspond to Figure 6 Area B1 and area B2 in.

[0056] It should be noted that the third reflected sub-beam F21 and the fourth reflected sub-beam F22 are named for the convenience of describing the optical path. In the actual optical path, the third reflected sub-beam F21 and the fourth reflected sub-beam F22 correspond to the same optical beam (that is, the second reflected beam F2). When the second reflected beam F2 is incident on the first reflector 5610 and the second reflector 5630, the first reflector 5610 and the second reflector 5630 need to divide the second reflected beam F2 into equal parts to ensure that the angles covered by the regions B1 and B2 are consistent.

[0057] Specifically, the second lens assembly 540 may include one or more lenses, and the lens may be a positive lens, a complex lens, a spherical lens, an aspherical lens, etc. This embodiment does not limit the specific implementation of the second lens assembly 540.

[0058] In some possible embodiments, at least part of the second angle sub-interval is located between at least part of the third angle sub-interval and at least part of the first angle sub-interval, and at least part of the first angle sub-interval is located between at least part of the second angle sub-interval and at least part of the fourth angle sub-interval. Specifically, the second angle sub-interval [-8°, 0°] is located between the third angle sub-interval [-16°, -8°] and the first angle sub-interval [0°, +8°]. The first angle sub-interval [0°, +8°] is located between the second angle sub-interval [-8°, 0°] and the fourth angle sub-interval [+8°, +16°].

[0059] In addition, since the first reflected sub-beam F11 and the third reflected sub-beam F21 correspond to the same reflection area (that is, the first reflection area 302), and the first reflector 5610 is provided on the optical path of the third reflected sub-beam F21, the spot pattern of the third outgoing sub-beam O21 is axially symmetrical with the spot pattern of the first outgoing sub-beam O11. Figure 8 As shown, the pattern of region A2 (corresponding to the first emergent sub-beam O11 ) is axially symmetric with the pattern of region B1 (corresponding to the third emergent sub-beam O221 ), so that in region B1 , the smaller the emergent angle, the greater the spot energy.

[0060] Similarly, since the second reflected sub-beam F12 and the fourth reflected sub-beam F22 correspond to the same reflection area (that is, the second reflection area 304), and a second reflector 5630 is provided on the optical path of the fourth reflected sub-beam F22, the spot pattern of the fourth outgoing sub-beam O22 is axially symmetrical with the spot pattern of the second outgoing sub-beam O12. Figure 8 As shown, the pattern of region A1 (corresponding to the second emergent sub-beam O12 ) is axially symmetric with the pattern of region B2 (corresponding to the fourth emergent sub-beam O22 ), so that in region B2 , the smaller the emergent angle, the greater the spot energy.

[0061] Further, in the present embodiment, the controller 70 is configured to: when the duration of the micromirror 310 being in the first rotation position is greater than or equal to the first duration, control the micromirror 310 to rotate to the second rotation position; when the duration of the micromirror 310 being in the second rotation position is greater than or equal to the second duration, control the micromirror 310 to rotate to the first rotation position. Wherein, the second duration is less than the first duration. Specifically, the ratio between the second duration and the first duration may be greater than or equal to 0.15 and less than or equal to 0.85. For example, the ratio between the second duration and the first duration may be 3 / 17, 1 / 4, 1 / 3, 1 / 2, etc. The controller 70 may be a microcontroller unit (MCU), or a control circuit integrated with a control chip, etc., which is not specifically limited in the present embodiment.

[0062] On the one hand, the controller 70 is used to control the micromirror 310 to continuously switch between the first rotation position and the second rotation position, so that the illumination light beam L generated by the light source device 100 is a light beam in which the first output light beam O1 and the second output light beam O2 are superimposed in time, so that the second output light beam O2 can play a role in expanding the output angle based on the first output light beam O1.

[0063] On the other hand, since the duration of the micromirror 310 being in the second rotation position is shorter than the duration of the micromirror 310 being in the first rotation position, the overall energy intensity of the first outgoing light beam O1 can be greater than the overall energy intensity of the second outgoing light beam O2. Figure 8 , the overall energy intensity of region A1 and region A2 is stronger than that of region B1 and region B2. The darker the color of the "gray square", the weaker the corresponding energy intensity, so that the overall energy intensity corresponding to region A1, region A2, region B1 and region B2 can present an energy distribution with a strong middle and weak surroundings.

[0064] It should be noted here that in the prior art, in order to achieve the regulatory requirements of covering the emission angles of -16° ~ +16° in the horizontal direction and -2° ~ +6° in the vertical direction, and to meet the energy distribution of "strong in the middle and weak around", the high beam will result in the phenomenon that most of the light energy is concentrated in the local area of ​​the DMD. And when the light distribution brightness is higher and the spatial emission angle range is larger, the local optical power density of the DMD will be higher. Therefore, in this case, the local optical power density of the DMD will exceed the safety threshold of the device, and there is a risk of reducing the service life of the DMD.

[0065] Therefore, in order to solve the above problems, the inventor of the present application has proposed the light source device 100 in the present embodiment. Since the first emergent light beam O1 and the second emergent light beam O2 are emitted in different time periods and the corresponding emergent angles are different, the emergent angle range of the first emergent light beam O1 can be reduced to reduce the local optical power density of the DMD to ensure the service life of the DMD. Specifically in the present application, the first emergent light beam O1 only needs to cover the emergent angle of -8° to +8° in the horizontal direction, and the emergent angles of -16° to -8° and +8° to +16° in the horizontal direction are covered by the second emergent light beam O2. The second reflected light beam F2 can play a role in expanding the emergent angle, so that the light beam after the first emergent light beam O1 and the second emergent light beam O2 are superimposed can meet the requirements of the regulations.

[0066] In some possible embodiments, the controller 70 is specifically configured to: control the light modulator 30 to switch between a first operating mode and a second operating mode; in the first operating mode, at least some of the multiple micromirrors 310 are in a first rotation position, and in the second operating mode, at least some of the multiple micromirrors 310 are in a second rotation position, so that the first reflected light beam F1 formed by at least some of the micromirrors 310 and the second reflected light beam F1 formed by at least some of the micromirrors 310 are incident on the lens module in a time-sharing manner.

[0067] As an example, in the first working mode, all micromirrors 310 included in the light modulator 30 are in the first rotation position. Similarly, in the second working mode, all micromirrors 310 included in the light modulator 30 are in the second rotation position. At this time, the light modulator 30 can be equivalent to a reflector.

[0068] As another example, in the first working mode, a part of the micromirrors 310 included in the light modulator 30 is in the first rotation position, while another part of the micromirrors 310 is in the second rotation position. Similarly, in the second working mode, a part of the micromirrors 310 included in the light modulator 30 is in the second rotation position, while another part of the micromirrors 310 is in the first rotation position. That is to say, the controller 70 can control the flipping state of the light modulator 30 to adjust another part of the micromirrors 310 corresponding to a specific emission angle to achieve the Adaptive Driving Beam (ADB) function. Specifically, the controller 70 can automatically change the light type of the high beam according to the current road driving conditions, and only turn off (or greatly reduce) the illumination light in the direction of the oncoming vehicle when there is an oncoming vehicle, and keep the illumination light in other directions unchanged, thereby effectively improving driving safety.

[0069] However, since the micromirror 310 switches between the first rotation position and the second rotation position by switching between the On state and the Off state, when the area A1 needs to reduce the light intensity of a part of the area to realize the ADB function, since the area A1 and the area B2 correspond to the same reflective area on the DMD, the light intensity of the part of the area corresponding to the area B2 will be increased, that is, the area A1 and the area B2 will show the characteristic of complementary brightness. Similarly, the area A2 and the area B1 will show the characteristic of complementary brightness.

[0070] In order to solve the above problems, the inventors of the present application have designed the optical path of the lens module 50, and separated the emission angles corresponding to the area A1 and the area B2 as much as possible, and separated the emission angles corresponding to the area A2 and the area B1 as much as possible. Specifically in the present application, the area A1 corresponds to the emission angle of -8° ~ 0°, the area B2 corresponds to the emission angle of +8° ~ +16°, and the mapping relationship between the area A1 and the area B2 is flipped left and right. Similarly, the area B1 corresponds to the emission angle of -16° ~ -8°, the area A2 corresponds to the emission angle of 0° ~ +8°, ​​and the mapping relationship between the area A2 and the area B1 is flipped left and right, so that when the ADB function is enabled, the emission angles of the On light and the Off light are separated as much as possible, so as to minimize the probability that the two areas need to reduce the light intensity at the same time, so as to ensure the lighting effect of the high beam.

[0071] In summary, the light source device 100 in this embodiment can achieve ADB performance with high illumination brightness and a large illumination angle while satisfying the reliability and life of the light modulator 30 (eg, DMD device).

[0072] In some possible embodiments, see Fig. 9 The optical axis of the first lens assembly 520 coincides with the optical axis of the second lens assembly 540. The second lens assembly 540 is located on a side of the first lens assembly 520 away from the light modulator 30, and is also disposed on the optical path of the first reflected light beam F1.

[0073] The first lens assembly 520 and the second lens assembly 540 are also used to sequentially image the first reflected light beam F1 to generate the first outgoing light beam O1. The second lens assembly 540 is also used to image the second reflected light beam F2 to generate the second outgoing light beam O2. Of course, the "first lens assembly 520 and the second lens assembly 540" here can be regarded as the same lens assembly, the first lens assembly 520 is the front lens group in the lens assembly, and the second lens assembly 540 is the rear lens group in the lens assembly.

[0074] It is not difficult to find here that the first outgoing light beam O1 and the second outgoing light beam O2 are both emitted from the second lens assembly 540, so that the external light exit window is smaller and the overall structure of the headlight 200 can be more compact. In addition, the emission angle of the second outgoing light beam O2 can also match the low beam headlight, assisting the adaptive adjustment of the low beam headlight pattern, so that the headlight 200 can realize high beam lighting and low beam lighting at the same time. Fig. 9 For the detailed description of the first lens assembly 520, the second lens assembly 540, the reflective assembly 560 and the optical path in the illustrated embodiment, reference may be made to the relevant introduction in the above embodiments, which will not be repeated here.

[0075] The first embodiment of the present application provides a light source device 100, which may include a light emitting module 10, a light modulator 30, a lens module 50, and a controller 70. The light emitting module 10 is used to generate a designated light beam E. The light modulator 30 may include a plurality of micromirrors 310, which are rotatably arranged on the optical path where the designated light beam E is located, and each micromirror 310 has a first rotation position and a second rotation position. When the micromirror 310 is in the first rotation position, the designated light beam E is reflected by the micromirror 310 to form a first reflected light beam F1; when the micromirror 310 is in the second rotation position, the designated light beam E is reflected by the micromirror 310 to form a second reflected light beam F2. The second reflected light beam F2 does not overlap with the first reflected light beam F1.

[0076] The lens module 50 is arranged on the optical path where the first reflected light beam F1 and the second reflected light beam F2 are located, and the lens module 50 is used to image the first reflected light beam F1 to generate a first outgoing light beam O1 whose outgoing angle belongs to the first angle interval. The lens module 50 is also used to image the second reflected light beam F2 to generate a second outgoing light beam O2 whose outgoing angle belongs to the second angle interval. The second angle interval does not overlap with at least part of the first angle interval. The controller 70 is electrically connected to the optical modulator 30, and is used to control at least one micromirror 310 to switch between the first rotation position and the second rotation position.

[0077] Since the emission angles corresponding to the first emission light beam O1 and the second emission light beam O2 emitted from the lens module 50 are at least partially different, the second emission light beam O2 can expand the emission angle on the basis of the first emission light beam O1. Therefore, when the light source device 100 is applied to the vehicle lamp 200, the lighting angle of the vehicle lamp 200 can be expanded to improve the lighting effect of the vehicle lamp 200.

[0078] See also Fig.10 The second embodiment of the present application provides a light source device 300, which may include a light emitting module 20, a reflector 40, a lens module 60, and a controller 80. The light emitting module 20 is used to generate a designated light beam E. The reflector 40 is rotatably arranged on the optical path where the designated light beam E is located. The reflector 40 has a first rotation position and a second rotation position. When the reflector 40 is in the first rotation position, the designated light beam E is reflected by the reflector 40 to form a first reflected light beam F1; when the reflector 40 is in the second rotation position, the designated light beam E is reflected by the reflector 40 to form a second reflected light beam F2. The second reflected light beam F2 does not overlap with the first reflected light beam F1.

[0079] The lens module 60 is arranged on the optical path where the first reflected light beam F1 and the second reflected light beam F2 are located, and the lens module 60 is used to image the first reflected light beam F1 to generate a first emitted light beam whose emission angle belongs to the first angle interval. The lens module 60 is also used to image the second reflected light beam F2 to generate a second emitted light beam whose emission angle belongs to the second angle interval. Among them, the second angle interval does not overlap with at least part of the first angle interval. The controller 80 is electrically connected to the reflector 40, and is used to control the reflector 40 to switch between the first rotation position and the second rotation position, so that the first reflected light beam F1 and the second reflected light beam F2 are incident on the lens module 60 in a time-sharing manner.

[0080] Since the emission angles corresponding to the first emission light beam O1 and the second emission light beam O2 emitted from the lens module 60 are at least partially different, the second emission light beam O2 can expand the emission angle on the basis of the first emission light beam O1. Therefore, when the light source device 300 is applied to the vehicle lamp 200, the lighting angle of the vehicle lamp 200 can be expanded to improve the lighting effect of the vehicle lamp 200.

[0081] In this embodiment, the reflector 40 may be a reflector. It is not difficult to find that the reflector 40 is used in this embodiment to replace the light modulator 30 in the first embodiment, which can reduce the hardware cost of the light source device 300 and the vehicle lamp 200 equipped with the light source device 300. Specifically, the reflector 40 has a first reflective area 401 and a second reflective area 403. The first reflective area 401 and the second reflective area 403 may be adjacent to each other, and the areas corresponding to the two may be the same.

[0082] Specifically, the features of the light emitting module 20 and the controller 80 may refer to and follow the features of the light emitting module 10 and the controller 70 in the first embodiment, respectively, and will not be described one by one here to save space.

[0083] See also Fig.11 The lens module 60 may include a first lens assembly 610, a second lens assembly 630 and a reflection assembly 650. The first lens assembly 610 is disposed on the optical path where the first reflected light beam F1 is located, and is used to adjust the emission angle of the first reflected light beam F1. The reflection assembly 650 and the second lens assembly 630 are sequentially disposed on the optical path where the second reflected light beam F2 is located, and the reflection assembly 650 is used to reflect the second reflected light beam F2 to the second lens assembly 630, and the second lens assembly 630 is used to adjust the emission angle of the second reflected light beam F2.

[0084] Specifically, the designated light beam E may include a first designated light beam E1 and a second designated light beam E2. When the reflector 40 is in the first rotation position, the first designated light beam E1 is reflected by the first reflection region 401 to form a first reflected light beam F11, and the second designated light beam E2 is reflected by the second reflection region 403 to form a second reflected light beam F12. The first lens assembly 610 is used to image the first reflected light beam F11 to generate a first emitted light beam O11 whose emission angle belongs to the first angle sub-interval. The first lens assembly 610 is used to image the second reflected light beam F12 to generate a second emitted light beam O12 whose emission angle belongs to the second angle sub-interval. The second angle sub-interval does not overlap with the first angle sub-interval, and both belong to the first angle interval.

[0085] In some possible embodiments, when the reflector 40 is in the second rotation position, the first designated sub-beam E1 is reflected by the first reflection area 401 to form a third reflected sub-beam F21, and the second designated sub-beam E2 is reflected by the second reflection area 403 to form a fourth reflected sub-beam F22. The reflective assembly 650 includes a first reflector 6520 and a second reflector 6540. The first reflector 6520 is disposed on the optical path of the third reflected sub-beam F21, and is used to reflect the third reflected sub-beam F21 to the second lens assembly 630. The second lens assembly 630 is used to image the third reflected sub-beam F21 to generate a third emitted sub-beam O21 whose emission angle belongs to the third angle sub-interval. The second reflector 6540 is arranged on the optical path where the fourth reflected sub-beam F22 is located, and is used for reflecting the fourth reflected sub-beam F22 to the second lens assembly 630; the second lens assembly 630 is used for imaging the fourth reflected sub-beam F22 to generate a fourth emergent sub-beam O22 whose emergent angle belongs to the fourth angle sub-interval, and the fourth angle sub-interval and the third angle sub-interval do not overlap, and both belong to the second angle interval.

[0086] In some possible embodiments, at least part of the second angle sub-interval is located between at least part of the third angle sub-interval and at least part of the first angle sub-interval; at least part of the first angle sub-interval is located between at least part of the second angle sub-interval and at least part of the fourth angle sub-interval.

[0087] Specifically, the features of the first lens assembly 610, the second lens assembly 630 and the reflection assembly 650 may refer to and follow the features of the first lens assembly 520, the second lens assembly 540 and the reflection assembly 560 in the first embodiment, respectively. To save space, they will not be described one by one here. Similarly, the features of multiple light beams may refer to and follow the features of multiple light beams with the same name in the first embodiment, respectively. To save space, they will not be described one by one here. For example, the features of the first emergent sub-beam O11 in this embodiment may refer to and follow the features of the first emergent sub-beam O11 in the first embodiment, respectively. For another example, the features of the first angle sub-interval in this embodiment may refer to and follow the features of the first angle sub-interval in the first embodiment, respectively.

[0088] It should be noted here that, in the absence of conflict, any other one or more features of the light source device 100 corresponding to the first embodiment can be combined with the light source device 300 corresponding to the second embodiment, and will not be described one by one here to save space.

[0089] In the specification of this application, certain words are used to refer to specific components in the specification and claims. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to"; "substantially" means that those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0090] In the description of the present application, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", and "inside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the present application. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0091] In this application, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be internal communication between two elements, or it can be only surface contact. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0093] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A light source device, characterized in that: Suitable for use in high beam lamps, the light source device comprises: A light emitting module, used for generating a designated light beam, wherein the central energy intensity of the designated light beam is greater than the edge energy intensity; The optical modulator comprises a plurality of micromirrors, wherein the plurality of micromirrors are rotatably arranged on an optical path where the designated light beam is located, and each of the micromirrors has a first rotation position and a second rotation position; when the micromirror is at the first rotation position, the designated light beam is reflected by the micromirror to form a first reflected light beam; when the micromirror is at the second rotation position, the designated light beam is reflected by the micromirror to form a second reflected light beam; Wherein, the optical modulator has a first reflection area and a second reflection area; the designated light beam includes a first designated sub-beam and a second designated sub-beam; the first designated sub-beam is reflected by a plurality of micro-mirrors corresponding to the first reflection area and located at the first rotation position to form a first reflected sub-beam, and the second designated sub-beam is reflected by a plurality of micro-mirrors corresponding to the second reflection area and located at the first rotation position to form a second reflected sub-beam; the first designated sub-beam is reflected by a plurality of micro-mirrors corresponding to the first reflection area and located at the second rotation position to form a third reflected sub-beam, and the second designated sub-beam is reflected by a plurality of micro-mirrors corresponding to the second reflection area and located at the second rotation position to form a fourth reflected sub-beam; wherein, the first reflected sub-beam and the second reflected sub-beam correspond to the first reflected light beam, and the third reflected sub-beam and the fourth reflected sub-beam correspond to the second reflected light beam; A lens module is arranged on an optical path where the first reflected light beam and the second reflected light beam are located; the lens module is used to image the first reflected light beam to generate a first emergent light beam whose emergent angle belongs to a first angle interval; the lens module is used to image the second reflected light beam to generate a second emergent light beam whose emergent angle belongs to a second angle interval; wherein the second angle interval does not overlap with at least a part of the first angle interval, and the absolute value of the angle value in the first angle interval is less than or equal to the absolute value of the angle value in the second angle interval; Wherein, the lens module includes a first lens assembly, a second lens assembly and a reflection assembly; the first lens assembly is used to image the first reflected sub-beam to generate a first emergent sub-beam whose emergent angle belongs to a first angle sub-interval, the first lens assembly is used to image the second reflected sub-beam to generate a second emergent sub-beam whose emergent angle belongs to a second angle sub-interval, the second angle sub-interval and the first angle sub-interval do not overlap, and both belong to the first angle interval; the reflection assembly includes a first reflector and a second reflector, the first reflector is arranged on the optical path where the third reflected sub-beam is located, and is used to reflect the third reflected sub-beam to the second lens assembly; the second lens assembly is used to image the third reflected sub-beam to generate a third emergent sub-beam whose emergent angle belongs to the third angle sub-interval; the second reflector is arranged on the optical path where the fourth reflected sub-beam is located, and is used to reflect the fourth reflected sub-beam to the second lens assembly; the second lens assembly is used to image the fourth reflected sub-beam to generate a fourth emergent sub-beam whose emergent angle belongs to a fourth angle sub-interval, the fourth angle sub-interval and the third angle sub-interval do not overlap, and both belong to the second angle interval; Wherein, at least part of the second angle sub-interval is located between at least part of the third angle sub-interval and at least part of the first angle sub-interval; at least part of the first angle sub-interval is located between at least part of the second angle sub-interval and at least part of the fourth angle sub-interval; In the case where the spot energy of the designated light beam is in a non-uniform distribution with strong center and weak surroundings, the spot energies of the first reflected light beam and the second reflected light beam generated by the reflection of the plurality of micromirrors are also in a non-uniform distribution with strong center and weak surroundings; in the case where the spot energy of the first reflected light beam is in a non-uniform distribution with strong center and weak surroundings, the overall energy distribution corresponding to the area corresponding to the exit angle of the first emergent sub-beam and the area corresponding to the exit angle of the second emergent sub-beam is also in a non-uniform distribution with strong center and weak surroundings; wherein the spot pattern of the third emergent sub-beam is axially symmetrical with the spot pattern of the first emergent sub-beam; and the spot pattern of the fourth emergent sub-beam is axially symmetrical with the spot pattern of the second emergent sub-beam; and a controller electrically connected to the light modulator, for controlling the micromirror to cyclically switch between the first rotation position and the second rotation position, so that the first outgoing light beam and the second outgoing light beam are temporally superimposed to form an illumination light beam, so that the second outgoing light beam has the effect of expanding the outgoing angle on the basis of the first outgoing light beam; The controller is configured to: control the micromirror to rotate to the second rotation position when the time length of the micromirror in the first rotation position is greater than or equal to the first time length; control the micromirror to rotate to the first rotation position when the time length of the micromirror in the second rotation position is greater than or equal to the second time length; the second time length is less than the first time length; wherein the time length of the micromirror in the second rotation position is less than the time length of the micromirror in the first rotation position, so that the overall energy intensity of the first emergent light beam is greater than the overall energy intensity of the second emergent light beam, so that the overall energy intensity corresponding to the area corresponding to the emergent angle of the first emergent sub-beam, the area corresponding to the emergent angle of the second emergent sub-beam, the area corresponding to the emergent angle of the third emergent sub-beam and the area corresponding to the emergent angle of the fourth emergent sub-beam presents an energy distribution that is strong in the middle and weak around.

2. The light source device according to claim 1, characterized in that: There is a one-to-one mapping relationship between the spatial position of the micromirror at the first rotation position on the light modulator and the spatial angle of the first outgoing light beam; There is a one-to-one mapping relationship between the spatial position of the micromirror at the second rotation position on the light modulator and the spatial angle of the second emergent light beam.

3. The light source device according to claim 1, characterized in that: The optical axis of the first lens assembly is parallel to the optical axis of the second lens assembly; The first lens assembly is used for imaging the first reflected light beam to generate the first emergent light beam; the second lens assembly is used for imaging the second reflected light beam to generate the second emergent light beam.

4. The light source device according to any one of claims 1 to 3, characterized in that: The controller is specifically configured as follows: The optical modulator is controlled to switch between a first operating mode and a second operating mode; in the first operating mode, at least some of the plurality of micromirrors are in the first rotation position, and in the second operating mode, at least some of the plurality of micromirrors are in the second rotation position, so that a first reflected light beam formed by at least some of the micromirrors and a second reflected light beam formed by at least some of the micromirrors are incident on the lens module in a time-sharing manner.

5. The light source device according to any one of claims 1 to 3, characterized in that: The light source device further includes a guide, which is disposed on the optical path where the designated light beam is located, and is used to guide the designated light beam to the light modulator.

6. The light source device according to claim 5, characterized in that: The guide member is a total internal reflection prism, which is arranged on the optical path where the designated light beam is located, and is used to reflect the designated light beam to the light modulator; the total internal reflection prism is also arranged on the optical path where the first reflected light beam and the second reflected light beam are located, and is used to transmit the first reflected light beam and the second reflected light beam to the lens module; or The guide is a third reflector, which is disposed on the optical path where the designated light beam is located, and is used to reflect the designated light beam to the light modulator; the third reflector deviates from the optical paths where the first reflected light beam and the second reflected light beam are located.

7. A light source device, characterized in that: Suitable for use in high beam lamps, the light source device comprises: A light emitting module, used for generating a designated light beam, wherein the central energy intensity of the designated light beam is greater than the edge energy intensity; a reflector, rotatably disposed on the optical path where the designated light beam is located, the reflector having a first rotation position and a second rotation position; when the reflector is at the first rotation position, the designated light beam is reflected by the reflector to form a first reflected light beam; when the reflector is at the second rotation position, the designated light beam is reflected by the reflector to form a second reflected light beam; Wherein, the reflector has a first reflection area and a second reflection area; the designated light beam includes a first designated sub-beam and a second designated sub-beam; when the reflector is in the first rotation position, the first designated sub-beam is reflected by the first reflection area to form a first reflected sub-beam, and the second designated sub-beam is reflected by the second reflection area to form a second reflected sub-beam; when the reflector is in the second rotation position, the first designated sub-beam is reflected by the first reflection area to form a third reflected sub-beam, and the second designated sub-beam is reflected by the second reflection area to form a fourth reflected sub-beam; wherein, the first reflected sub-beam and the second reflected sub-beam correspond to the first reflected light beam, and the third reflected sub-beam and the fourth reflected sub-beam correspond to the second reflected light beam; A lens module is arranged on an optical path where the first reflected light beam and the second reflected light beam are located; the lens module is used to image the first reflected light beam to generate a first emergent light beam whose emergent angle belongs to a first angle interval; the lens module is used to image the second reflected light beam to generate a second emergent light beam whose emergent angle belongs to a second angle interval; wherein the second angle interval does not overlap with at least a part of the first angle interval, and the absolute value of the angle value in the first angle interval is less than or equal to the absolute value of the angle value in the second angle interval; Wherein, the lens module includes a first lens assembly, a second lens assembly and a reflection assembly; the first lens assembly is used to image the first reflected sub-beam to generate a first emergent sub-beam whose emergent angle belongs to a first angle sub-interval, the first lens assembly is used to image the second reflected sub-beam to generate a second emergent sub-beam whose emergent angle belongs to a second angle sub-interval, the second angle sub-interval and the first angle sub-interval do not overlap, and both belong to the first angle interval; the reflection assembly includes a first reflector and a second reflector, the first reflector is arranged on the optical path where the third reflected sub-beam is located, and is used to reflect the third reflected sub-beam to the second lens assembly; the second lens assembly is used to image the third reflected sub-beam to generate a third emergent sub-beam whose emergent angle belongs to the third angle sub-interval; the second reflector is arranged on the optical path where the fourth reflected sub-beam is located, and is used to reflect the fourth reflected sub-beam to the second lens assembly; the second lens assembly is used to image the fourth reflected sub-beam to generate a fourth emergent sub-beam whose emergent angle belongs to a fourth angle sub-interval, the fourth angle sub-interval and the third angle sub-interval do not overlap, and both belong to the second angle interval; Wherein, at least part of the second angle sub-interval is located between at least part of the third angle sub-interval and at least part of the first angle sub-interval; at least part of the first angle sub-interval is located between at least part of the second angle sub-interval and at least part of the fourth angle sub-interval; In the case where the spot energy of the designated light beam is in a non-uniform distribution with strong center and weak surroundings, the spot energies of the first reflected light beam and the second reflected light beam generated by the reflection of the reflector are also in a non-uniform distribution with strong center and weak surroundings; in the case where the spot energy of the first reflected light beam is in a non-uniform distribution with strong center and weak surroundings, the overall energy distribution corresponding to the area corresponding to the exit angle of the first emergent sub-beam and the area corresponding to the exit angle of the second emergent sub-beam is also in a non-uniform distribution with strong center and weak surroundings; wherein the spot pattern of the third emergent sub-beam is axially symmetrical with the spot pattern of the first emergent sub-beam; and the spot pattern of the fourth emergent sub-beam is axially symmetrical with the spot pattern of the second emergent sub-beam; and a controller electrically connected to the reflector, for controlling the reflector to cyclically switch between the first rotation position and the second rotation position, so that the first reflected light beam and the second reflected light beam are incident on the lens module in a time-sharing manner, and the first outgoing light beam and the second outgoing light beam are superimposed in time to form an illumination light beam, so that the second outgoing light beam plays a role of expanding the outgoing angle on the basis of the first outgoing light beam; The controller is configured to: control the reflector to rotate to the second rotation position when the time length of the reflector in the first rotation position is greater than or equal to the first time length; control the reflector to rotate to the first rotation position when the time length of the reflector in the second rotation position is greater than or equal to the second time length; the second time length is less than the first time length; wherein the time length of the reflector in the second rotation position is less than the time length of the first rotation position, so that the overall energy intensity of the first emergent light beam is greater than the overall energy intensity of the second emergent light beam, so that the overall energy intensity corresponding to the area corresponding to the emergent angle of the first emergent sub-beam, the area corresponding to the emergent angle of the second emergent sub-beam, the area corresponding to the emergent angle of the third emergent sub-beam and the area corresponding to the emergent angle of the fourth emergent sub-beam presents an energy distribution with strong energy in the middle and weak energy around.

8. A vehicle lamp, characterized in that: include: case; And the light source device according to any one of claims 1 to 7, wherein the light source device is arranged in the housing.

Images