Light source apparatus and optical system

Abstract

Disclosed in the present application are a light source apparatus and an optical system. The light source apparatus comprises an excitation-light source, a fluorescence module and an opto-mechanical relay module, wherein the excitation-light source comprises an excitation-light generator and a plurality of optical devices, the plurality of optical devices being configured to form at least two shaping units, one of which is selectively located on an optical path where first excitation light generated by the excitation-light generator is located, such that second excitation light is generated, and the light spot energy distribution situations of second excitation light generated by different shaping units being different; the fluorescence module comprises a fluorescence wheel, which is used for generating specified fluorescence and third excitation light; and the opto-mechanical relay module is arranged on an optical path where the third excitation light and the specified fluorescence are located. At least two shaping units can realize multiple different light spot energy distributions, and therefore an optical system can realize multiple different optical functions by only providing one light source module in the optical system, thereby lowering the hardware cost of the optical system and reducing the space occupied by the optical system.

Description

Light source device and optical system Technical Field

[0001] This application relates to the field of optical imaging technology, and more specifically, to a light source device and an optical system. Background Technology

[0002] As users increasingly demand multifunctional products, they often require the same optical system to perform different functions in different scenarios. For example, vehicle lights need to provide illumination while the vehicle is in motion, and projection display functionality when the vehicle is parked.

[0003] Existing optical systems employ a structure of multiple light source modules and optical lens groups. For example, one light source module and optical lens group is used to realize the illumination function, while another light source module and optical lens group is used to realize the projection display function. As a result, the hardware cost of the optical system is high and it occupies a large space. Summary of the Invention

[0004] This application provides a light source device and an optical system.

[0005] According to a first aspect of this application, embodiments of this application provide a light source device, which includes an excitation light source, a fluorescence module, and an optomechanical relay module. The excitation light source includes an excitation light generator and multiple optical devices; the excitation light generator generates a first excitation light; the multiple optical devices form at least two shaping units, one of which is selectively located on the optical path of the first excitation light, for optically shaping the first excitation light to generate a second excitation light; the energy distribution of the second excitation light generated by different shaping units is different. The fluorescence module includes a fluorescence wheel disposed on the optical path of the second excitation light; the fluorescence wheel includes adjacent fluorescent and transmissive portions; the fluorescent portion generates a specified fluorescence under the excitation of the second excitation light; the transmissive portion transmits the second excitation light to form a third excitation light. The optomechanical relay module is disposed on the optical path of the third excitation light and the specified fluorescence, for guiding the third excitation light and the specified fluorescence to a specified position.

[0006] According to a second aspect of this application, embodiments of this application also provide an optical system, which includes the aforementioned light source device and light modulator. The light source device is used to generate a specified ray of light, and the light modulator is disposed on the optical path of the specified ray of light.

[0007] This application provides a light source device and an optical system. Multiple optical components in the light source device can be used to form at least two shaping units, and the energy distribution of the second excitation light generated by different shaping units is different. Specifically, different energy distributions can correspond to various optical functions that the light source device can achieve. Therefore, by switching between at least two shaping units, the light source device can change the energy distribution of the second excitation light, thereby achieving different optical functions. For example, one shaping unit can correspond to an illumination function, in which case the shaping unit can shape the first excitation light into a light spot that meets regulatory requirements (e.g., a light spot that is bright in the center and dark around the edges). The other shaping unit can correspond to a projection display function, in which case the shaping unit can shape the first excitation light into a light spot with a uniform energy distribution to ensure the display quality of the projected image.

[0008] The at least two shaping units in this application can achieve various different spot energy distributions by sharing the same first excitation light, enabling the optical system to achieve multiple different optical functions with only one light source module. On the one hand, this reduces the hardware cost of the optical system; on the other hand, it reduces the space occupied by the optical system, realizing a miniaturized design. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of the structure of the optical system provided in an embodiment of this application.

[0011] Figure 2 is a schematic diagram of the light spot energy distribution under the high beam illumination mode provided in the embodiment of this application.

[0012] Figure 3 is a schematic diagram of the light spot energy distribution under the low beam illumination mode provided in the embodiments of this application.

[0013] Figure 4 is a schematic diagram of the light source device in the optical system shown in Figure 1.

[0014] Figure 5 is a schematic diagram of the fluorescent wheel in the light source device shown in Figure 4.

[0015] Figure 6 is a schematic diagram of one structure of the excitation light source in the light source device shown in Figure 4.

[0016] Figure 7 is a schematic diagram of another structure of the excitation light source in the light source device shown in Figure 4.

[0017] Figure 8 is a schematic diagram of another structure of the excitation light source in the light source device shown in Figure 4.

[0018] Figure 9 is a schematic diagram of another structure of the excitation light source in the light source device shown in Figure 4.

[0019] Figure 10 is a schematic diagram of another structure of the fluorescent wheel shown in Figure 5.

[0020] Figure 11 is a schematic diagram of another structure of the light source device shown in Figure 4.

[0021] Figure 12 is another structural schematic diagram of the light source device shown in Figure 4.

[0022] Figure 13 is another structural schematic diagram of the fluorescent wheel shown in Figure 5.

[0023] Figure 14 is another structural schematic diagram of the light source device shown in Figure 4. Detailed Implementation

[0024] 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 with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0025] Referring to Figure 1, this application provides an optical system 100 capable of performing various optical functions, such as illumination and projection display. Specifically, the optical system 100 can be installed on a vehicle's headlights. When the vehicle is in motion, the optical system 100 can provide illumination; when the vehicle is parked, the optical system 100 can provide projection display, thus enriching the usage scenarios of the headlights. Of course, the optical system 100 can also be applied to other devices with illumination functions; this embodiment does not impose specific limitations.

[0026] In this embodiment, the optical system 100 may include a light source device 200 and a light modulator 120. The light source device 200 is used to generate a specified light LD, which may be a mixed light of laser and fluorescence, a mixed light of LED light and fluorescence, or a mixed light of laser, LED light and fluorescence.

[0027] In this embodiment, the light source device 200 can change the energy distribution of the light spot corresponding to a specified light LD to achieve different optical functions. For example, when the optical system 100 needs to achieve the illumination function (that is, when the optical system 100 is working in illumination mode), the light source device 200 can shape the light spot into a non-uniform energy distribution light spot that is "bright in the middle and dark around the edges".

[0028] Please refer to Figures 2 and 3 respectively. Figure 2 shows a schematic diagram of the beam energy distribution in the high beam illumination mode that meets regulatory requirements, and Figure 3 shows a schematic diagram of the beam energy distribution in the low beam illumination mode that meets regulatory requirements. When the light source device 200 shapes the beam into a non-uniform energy distribution as shown in Figure 2, the optical system 100 operates in the high beam illumination mode; when the light source device 200 shapes the beam into a non-uniform energy distribution as shown in Figure 3, the optical system 100 operates in the low beam illumination mode.

[0029] It is not difficult to observe that the energy distribution of the light spot in both the low beam and high beam illumination modes is a non-uniform distribution characterized by "stronger energy in the center and weaker energy around the edges." The difference lies in the overall shape of the light spot. In some possible embodiments, a first light spot shaping component and a second light spot shaping component (e.g., a light spot shaping component can be a light-shielding plate) can be provided in the light source device 200. The first and second light spot shaping components can be selectively disposed in the optical path of the light source device 200. Here, the "optical path" can be the optical path where the first excitation light J1 is located, or it can be the optical path where the designated light LD is located. Specifically, when the optical system 100 operates in the low beam illumination mode, the first light spot shaping component can be moved into the optical path of the light source device 200 to make the shape of the light spot meet the regulatory requirements for low beam illumination; when the optical system 100 operates in the high beam illumination mode, the second light spot shaping component can be moved into the optical path of the light source device 200 to make the shape of the light spot meet the regulatory requirements for high beam illumination. Therefore, by setting a first spot shaping component and a second spot shaping component, this embodiment enables the optical system 100 to flexibly switch between high beam lighting mode and low beam lighting mode, thus enriching the application scenarios of vehicle lights.

[0030] When the optical system 100 needs to perform a projection display function (that is, when the optical system 100 is operating in projection display mode), the light source device 200 can shape the light spot into a light spot with a uniform energy distribution. Specifically, the specific implementation of the light source device 200 will be described later in the specification.

[0031] The light modulator 120 is positioned on the optical path of the designated light LD and is used to guide the designated light LD. Specifically, when the optical system 100 needs to perform an illumination function, the light modulator 120 is used to directly reflect the designated light LD to the area to be illuminated (e.g., the front and rear areas of a vehicle); when the optical system 100 needs to perform a projection display function, the light modulator 120 is used to modulate the designated light LD to generate light carrying image information and reflect the light carrying image information to the area to be projected (e.g., a projection screen, a wall, etc.).

[0032] Specifically, the optical modulator 120 can be a digital micromirror device (DMD). The DMD is composed of an array of digital micromirrors, with each micromirror forming a modulation unit. Each modulation unit modulates the image corresponding to one pixel. Each micromirror flips under the drive signal generated by the controller. The number of flips of each micromirror is determined by the drive signal. The flipped array of digital micromirrors modulates a specified light LD to form light carrying image information. In other possible embodiments, the optical modulator 120 can also be an HTPS-LCD display chip, a Liquid Crystal on Silicon (LCoS) chip, etc. This embodiment does not limit the specific implementation of the optical modulator 120.

[0033] Referring to Figures 4 and 5, the light source device 200 in this embodiment may include an excitation light source 30, a fluorescence module 40, and an optomechanical relay module 50. The excitation light source 30 may include an excitation light generator 320 and multiple optical devices 340. The excitation light generator 320 generates a first excitation light J1, and the multiple optical devices 340 form at least two shaping units 3410. One of the at least two shaping units 3410 may be selectively located in the optical path of the first excitation light J1, and is used to optically shape the first excitation light J1 to generate a second excitation light J2. Specifically, the spot energy distribution of the second excitation light J2 generated by different shaping units 3410 is different. In particular, different spot energy distributions can correspond to various optical functions that the light source device 200 can achieve.

[0034] Therefore, by switching at least two shaping units 3410, the light source device 200 can change the energy distribution of the second excitation light J2, thereby achieving different optical functions. For example, one shaping unit 3410 can correspond to the illumination function, in which case the shaping unit 3410 can shape the first excitation light J1 into a light spot that meets regulatory requirements (e.g., a light spot that is bright in the center and dark around the edges). The other shaping unit 3410 can correspond to the projection display function, in which case the shaping unit 3410 can shape the first excitation light J1 into a light spot with uniform energy distribution to ensure the display quality of the projected image. Specifically, when the light source device 200 needs to implement the illumination function, the shaping unit 3410 corresponding to the illumination function is switched to the optical path where the first excitation light J1 is located; when the light source device 200 needs to implement the projection display function, the shaping unit 3410 corresponding to the projection display function is switched to the optical path where the first excitation light J1 is located, so that the light source device 200 can switch between the illumination mode and the projection display mode.

[0035] The fluorescence module 40 may include a fluorescence wheel 410, which is disposed in the optical path of the second excitation light J2. The fluorescence wheel 410 includes adjacent fluorescence portions 4120 and transmission portions 4140, which are arranged around the rotation center M of the fluorescence wheel 410. Specifically, the fluorescence portion 4120 generates a specified fluorescence F under the excitation of the second excitation light J2; the transmission portion 4140 transmits the second excitation light J2 to form a third excitation light J3. Therefore, during the rotation of the fluorescence wheel 410, the specified fluorescence F and the third excitation light J3 are emitted from the fluorescence wheel 410 in a time-sharing manner. An optomechanical relay module 50 is disposed in the optical path of the third excitation light J3 and the specified fluorescence F, and is used to guide the third excitation light J3 and the specified fluorescence F to a specified position.

[0036] The term "guiding" here can be understood as performing optical operations such as converging, reflecting, and filtering on the third excitation light J3 and the designated fluorescence F, so that the third excitation light J3 and the designated fluorescence F can be accurately incident on the designated position. The "designated position" here is suitable for setting up the light modulator 120. In other words, the "designated ray LD" incident on the light modulator 120 can be understood as a temporal mixture of the third excitation light J3 and the designated fluorescence F. That is, during the operation of the light source device 200, the third excitation light J3 and the designated fluorescence F will continuously and cyclically incident on the light modulator 120.

[0037] Since at least two shaping units 3410 in the light source device 200 can achieve various different light spot energy distributions by sharing the same first excitation light J1, the optical system 100 only needs to set up one light source module 200 to achieve a variety of different optical functions. On the one hand, the hardware cost of the optical system 100 can be reduced; on the other hand, the space occupied by the optical system 100 can be reduced, realizing the miniaturization design of the optical system 100.

[0038] The specific optical path structure of the light source device 200 will be described in detail below.

[0039] In this embodiment, the excitation light source 30 is used to generate a second excitation light J2 and adjust the energy distribution of the second excitation light J2. The excitation light source 30 may include an excitation light generator 320 and multiple optical devices 340. The excitation light generator 320 is used to generate a first excitation light J1. Specifically, the first excitation light J1 is blue light. Therefore, the second excitation light J2 emitted after passing through the shaping unit 3410 is also blue light, as is the third excitation light J3 emitted after passing through the phosphor wheel 410.

[0040] In some possible embodiments, the excitation light generator 320 can be a laser generator, in which case the first excitation light J1 is a blue laser. Specifically, the laser generator can integrate multiple blue laser chips to enhance the brightness of the blue laser. In other possible embodiments, the excitation light generator 320 can be an LED light generator, in which case the first excitation light J1 is blue LED light. Specifically, the LED light generator can integrate multiple blue LED beads to enhance the brightness of the blue LED light.

[0041] In some possible embodiments, the first excitation light J1 can be a mixed light, wherein a portion of the first excitation light J1 can be used as the excitation light, and another portion of the first excitation light J1 can be used as the supplementary light. For example, the excitation light generator 320 can be a red-blue dual-color laser generator, in which case the first excitation light J1 is a mixed light of blue laser and red laser, wherein the blue laser is used as the excitation light and the red laser is used as the supplementary light to increase the brightness of the red light component in the specified light LD, so that the optical system 100 has a better image display effect or higher illumination brightness. Of course, the excitation light generator 320 can be a red-blue LED light generator or a red-green-blue tri-color laser generator; this embodiment does not specifically limit it. In the following description, the first excitation light J1 is blue light as an example.

[0042] In this embodiment, multiple optical devices 340 are used to form at least two shaping units 3410. Referring to FIG6, the at least two shaping units 3410 may include a first shaping unit 3412 and a second shaping unit 3414. The energy distribution of the second excitation light J2 generated by the first shaping unit 3412 is such that the energy intensity at the center of the second excitation light J2 spot is greater than the energy intensity at the edge of the spot. That is, the energy of the second excitation light J2 spot exhibits a non-uniform distribution with concentrated energy in the center and weak energy around the edges, in order to achieve a near-beam illumination effect that meets regulatory requirements.

[0043] Therefore, when the first shaping unit 3412 switches to the optical path where the first excitation light J1 is located, the light source device 200 can realize the illumination function. Specifically, the spot energy of the second excitation light J2 can decrease sequentially from the center of the spot to the periphery; alternatively, there can be a period of energy increase during the energy decrease process. Specifically, researchers can shape the spot of the first excitation light J1 according to the light pattern requirements corresponding to the illumination function to meet the regulatory requirements for both high and low beam illumination.

[0044] The energy distribution of the second excitation light J2 generated by the second shaping unit 3414 is as follows: the energy intensity is uniformly distributed from the center to the edge of the second excitation light J2 spot. In other words, the energy of the second excitation light J2 spot is uniformly distributed to ensure the display quality of the projected image. Therefore, when the second shaping unit 3414 switches to the optical path of the first excitation light J1, the light source device 200 can realize the projection display function.

[0045] Of course, at least two shaping units 3410 may also include other shaping units, which may form light spots with other energy distributions. For example, the light spot energy may be distributed in a non-uniform manner with concentrated energy around the edges and weak energy in the center, so as to achieve other optical functions. This embodiment does not specifically limit this.

[0046] In this embodiment, the excitation light source 30 may further include a motion platform 360. The first shaping unit 3412 and the second shaping unit 3414 are mounted on the motion platform 360. One of the first shaping unit 3412 and the second shaping unit 3414 moves to the optical path where the first excitation light J1 is located under the drive of the motion platform 360. For example, the motion platform 360 may include multiple limiting ribs. Multiple optical devices 340 used to form the first shaping unit 3412 and the second shaping unit 3414 can be embedded in the corresponding limiting ribs to fix the optical devices 340.

[0047] In some possible embodiments, the motion platform 360 can be used to drive the first shaping unit 3412 and the second shaping unit 3414 to move along a specified direction X, so that one of the first shaping unit 3412 and the second shaping unit 3414 moves to the optical path where the first excitation light J1 is located, thereby achieving switching between the first shaping unit 3412 and the second shaping unit 3414. Here, the "specified direction X" can be perpendicular to the optical path where the first excitation light J1 is located. Specifically, the motion platform 360 may include a mounting base (not shown in the figure) and a linear drive structure (not shown in the figure). The mounting base is used to fix the first shaping unit 3412 and the second shaping unit 3414, and the linear drive structure is driven by the mounting base to move the mounting base along the specified direction X. For example, the linear drive structure can be a lead screw and nut structure, a gear and rack structure, etc.

[0048] In the embodiment shown in FIG6, the plurality of optical devices 340 may include a first Gaussian scattering plate 341. The first Gaussian scattering plate 341 is used to form at least a portion of the structure of the first shaping unit 3412. Since the light intensity of the light emitted through the first Gaussian scattering plate 341 can be Gaussian distributed, the spot energy of the second excitation light J2 can be non-uniformly distributed with a strong center and weak edges. Specifically, when the first shaping unit 3412 moves to the optical path where the first excitation light J1 is located, the first Gaussian scattering plate 341 is located on the optical path where the first excitation light J1 is located, and it is used to perform Gaussian scattering on the first excitation light J1.

[0049] In the embodiment shown in Figure 6, the plurality of optical devices 340 may further include a convex lens 342 and a concave lens 343. The first Gaussian scattering plate 341, the convex lens 342, and the concave lens 343 are arranged sequentially at intervals to jointly form a first shaping unit 3412. When the first shaping unit 3412 moves to the optical path where the first excitation light J1 is located, the first Gaussian scattering plate 341, the convex lens 342, and the concave lens 343 are sequentially located on the optical path where the first excitation light J1 is located. Specifically, the convex lens 342 and the concave lens 343 are used to shape the light scattered by the first Gaussian scattering plate 341 according to a preset angular distribution so that the second excitation light J2 can meet the preset angular distribution.

[0050] In some possible embodiments, the excitation light generator 320 may integrate multiple blue laser chips, such that the light spot of the first excitation light J1 is an elliptical elongated strip. In this case, the convex lens 342 may be a convex cylindrical lens, and the concave lens 343 may be a concave cylindrical lens.

[0051] In some other possible embodiments, the convex lens 342 and the concave lens 343 can be replaced by other optical elements to adjust the angular distribution of the light scattered by the first Gaussian scatterer 341. For example, the convex lens 342 and the concave lens 343 can be replaced by a meniscus lens (not shown in the figure) with its convex surface facing the first Gaussian scatterer 341 and its concave surface used to emit the second excitation light J2, so that the overall structure of the first shaping unit 3412 is more compact.

[0052] Referring to Figure 7, the multiple optical devices 340 may further include a single-row compound eye lens 344, which and a first Gaussian scattering plate 341 are arranged at intervals to form a first shaping unit 3412. When the first shaping unit 3412 moves to the optical path where the first excitation light J1 is located, the single-row compound eye lens 344 and the first Gaussian scattering plate 341 are sequentially located on the optical path where the first excitation light J1 is located, and the side of the single-row compound eye lens 344 with the microlens array faces the excitation light generator 320. Specifically, the single-row compound eye lens 344 is used to shape the angular distribution of the first excitation light J1 before it is incident on the first Gaussian scattering plate 341, so that the second excitation light J2 can meet the preset angular distribution.

[0053] It is not difficult to see that, compared with the first shaping unit 3412 shown in Figure 6, which is formed by three optical devices 340, namely the first Gaussian scattering plate 341, the convex lens 342 and the concave lens 343, the first shaping unit 3412 in Figure 7 only requires two optical devices 340, namely, a single row of compound eye lenses 344 and the first Gaussian scattering plate 341. This can reduce the volume of the first shaping unit 3412, making the structure of the light source device 200 more compact, and achieving the miniaturization design of the optical system 100.

[0054] Referring again to Figure 6, the plurality of optical devices 340 may include a homogenizer 345, which is used to form at least a portion of the structure of the second shaping unit 3414. When the second shaping unit 3414 moves to the optical path where the first excitation light J1 is located, the homogenizer 345 is located on the optical path where the first excitation light J1 is located. Specifically, the homogenizer 345 is used to homogenize the first excitation light J1 so that the spot energy of the second excitation light J2 can be uniformly distributed. In the embodiment shown in Figure 6, the homogenizer 345 may be a compound eye lens 3452. In the embodiment shown in Figure 7, the homogenizer 345 may be a homogenizing rod 3454 (e.g., a square rod). In some other possible embodiments, a scattering sheet (e.g., a Lambertian scattering sheet) may be provided in the second shaping unit 3414 to replace the homogenizer 345 in order to homogenize the spot.

[0055] It should be noted that in the prior art, when the optical system 100 performs projection display, a light homogenizer (e.g., a compound eye lens) is usually placed between the phosphor wheel and the light modulator to achieve uniform display of image light. However, in this application, since the illumination light path and the projection display light path share the light path between the phosphor wheel 410 and the light modulator 120, if a light homogenizer is placed between the phosphor wheel 410 and the light modulator 120 to achieve uniform projection display, it would cause the non-uniform energy distribution of the illumination light path to be homogenized. Therefore, this application places the light homogenizer in the projection display light path within the second shaping unit 3414 to improve the brightness uniformity of the image light while avoiding any impact on the illumination light path.

[0056] In some other possible embodiments, referring to Figure 8, the motion platform 360 can be used to drive the first shaping unit 3412 and the second shaping unit 3414 to rotate around a designated center O, so that one of the first shaping unit 3412 and the second shaping unit 3414 rotates into the optical path where the first excitation light J1 is located, thereby achieving switching between the first shaping unit 3412 and the second shaping unit 3414. Specifically, the motion platform 360 may include a mounting base (not shown in the figure) and a rotary drive structure (not shown in the figure). The mounting base is used to fix the first shaping unit 3412 and the second shaping unit 3414, and the rotary drive structure is driven to rotate around the designated center O. For example, the rotary drive structure may be a rotary motor, a rotary servo, etc.

[0057] In the embodiment shown in FIG8, the first shaping unit 3412 may include the first Gaussian scattering plate 341, the convex lens 342, and the concave lens 343 described above. Of course, the first shaping unit 3412 may also include a single row of compound eye lenses 344 and the first Gaussian scattering plate 341. The second shaping unit 3414 may include the light-diffusing element 345 described above (e.g., compound eye lens 3452, light-diffusing rod 3454, etc.). This embodiment does not limit the specific implementation of the first shaping unit 3412 and the second shaping unit 3414.

[0058] In some possible embodiments, some optical components 340 in the first shaping unit 3412 and the second shaping unit 3414 can be integrated into the same optical component, so that the structure of the light source device 200 can be more compact. Referring to FIG9, the multiple optical components 340 may include a second Gaussian scattering plate 346 and a freeform surface optical component 347, which are sequentially located on the optical path of the first excitation light J1. The freeform surface optical component 347 can rotate around a designated center O. Specifically, the motion platform 360 may include a rotation drive structure (not shown in the figure), and the freeform surface optical component 347 can be directly connected to the output shaft of the rotation drive structure.

[0059] Specifically, as shown in part (a) of Figure 9, when the freeform optical element 347 rotates to the first angle, the second Gaussian scattering plate 346 and the freeform optical element 347 together form the first shaping unit 3412. As shown in part (b) of Figure 9, when the freeform optical element 347 rotates to the second angle, the second Gaussian scattering plate 346 and the freeform optical element 347 together form the second shaping unit 3414. The second angle is different from the first angle. Specifically, the first angle and the second angle can differ by 90 degrees. The freeform optical element 347 at the first angle can be rotated 90 degrees counterclockwise around a designated center O to reach the second angle. Therefore, this embodiment achieves the switching between the first shaping unit 3412 and the second shaping unit 3414 by rotating the freeform optical element 347.

[0060] In some possible embodiments, the freeform optical element 347 may have a first surface 3472, a second surface 3474, a third surface 3476, and a fourth surface 3478 that are sequentially adjacent to each other. The first surface 3472 and the third surface 3476 are opposite to each other, and the first surface 3472 is a convex surface while the third surface 3476 is a concave surface. When the freeform optical element 347 rotates to a first angle, the first surface 3472 faces the excitation light generator 320, and the second excitation light J2 is emitted via the third surface 3476. Specifically, the second Gaussian scatterer 346 is used to Gaussian scatter the first excitation light J1, such that the intensity of the light emitted via the second Gaussian scatterer 346 is Gaussian distributed. The first surface 3472 and the third surface 3476 correspond to the convex lens 342 and the concave lens 343 in the embodiment shown in FIG8. Specifically, the first surface 3472 and the third surface 3476 are used to shape the light scattered by the second Gaussian scatterer 346 according to a preset angular distribution, so that the second excitation light J2 can meet the preset angular distribution. Therefore, the spot energy of the second excitation light J2 generated by the first shaping unit 3412 can be non-uniformly distributed with strong energy in the middle and weak energy around the edges.

[0061] The second surface 3474 and the fourth surface 3478 face away from each other, and both surfaces are provided with microlens arrays. When the freeform optical component 347 rotates to the second angle, the second surface 3474 faces the excitation light generator 320, and the second excitation light J2 is emitted through the fourth surface 3478. Specifically, the second surface 3474 and the fourth surface 3478 with microlens arrays correspond to the light homogenizer 345 in the embodiment shown in FIG8, that is, the compound eye lens.

[0062] It should be noted that when the first laser light J1 is incident on the second shaping unit 3414, the second Gaussian scattering plate 346 will be located on the optical path of the first laser light J1, thus performing Gaussian scattering on the first excitation light J1. However, due to the presence of the second surface 3474 and the fourth surface 3478, which are equipped with a microlens array, the second surface 3474 and the fourth surface 3478 can homogenize the light scattered by the second Gaussian scattering plate 346, thereby homogenizing the energy distribution that is strong in the center and weak around the edges, so that the energy of the second excitation light J2 emitted from the fourth surface 3478 can be uniformly distributed.

[0063] Of course, in some other possible embodiments, the second Gaussian scatterer 346 and the freeform optical element 347 can be fixed on the mounting base, and the rotation drive structure drives the mounting base to rotate around a designated center O. When the mounting base rotates to the first angle, the first surface 3472 and the third surface 3476 of the second Gaussian scatterer 346 and the freeform optical element 347 are located on the optical path of the first excitation light J1. When the mounting base rotates to the second angle, the second surface 3474 and the fourth surface 3478 of the freeform optical element 347 are located on the optical path of the first excitation light J1. In this case, the second Gaussian scatterer 346 does not constitute an optical device in the second shaping unit 3414, so that the spot energy of the second excitation light J2 emitted from the second shaping unit 3414 can be more uniform.

[0064] In some possible embodiments, the excitation light source 30 may further include a relay lens 380, which is disposed in the optical path of the second excitation light J2. On one hand, for the second excitation light J2 emitted from the first shaping unit 3412, the relay lens 380 can convert the second excitation light J2 satisfying a preset angular distribution into a second excitation light J2 satisfying a preset planar distribution before it is incident on the phosphor wheel 410. That is, the relay lens 380 here plays the role of "angular-to-planar conversion". On the other hand, for the second excitation light J2 emitted from the second shaping unit 3414, the relay lens 380 can converge and collect the second excitation light J2 to improve the energy utilization efficiency of the second excitation light J2. Specifically, the relay lens 380 can be a convex lens, and the number of relay lenses 380 can be one or more; this embodiment does not limit this.

[0065] In this embodiment, the fluorescence module 40 is used to generate a specified fluorescence F under the excitation of the second excitation light J2. Specifically, the fluorescence module 40 may include a fluorescence wheel 410, and the transmission portion 4140 of the fluorescence wheel 410 is used to transmit the second excitation light J2 to form a third excitation light J3.

[0066] In some possible embodiments, referring again to FIG5, the transmission section 4140 includes a plurality of scattering media 4142. The second excitation light J2 is scattered by the plurality of scattering media 4142 and then transmitted out of the transmission section 4140 to form the third excitation light J3. Since the divergence angle of the second excitation light J2 is small while the divergence angle of the designated fluorescence F is large, the plurality of scattering media 4142 can expand the divergence angle so that the third excitation light J3 can be emitted at a larger divergence angle to match the divergence angle of the designated fluorescence F, thereby improving the white light illuminance and color uniformity of the designated light LD, and thus achieving a better display effect. Specifically, the scattering media 4142 can be nano-scattering particles.

[0067] The fluorescent part 4120 of the fluorescent wheel 410 is used to generate a specified fluorescence F under the excitation of the second excitation light J2. It is easy to understand that the specified fluorescence F and the second excitation light J2 have the same spot energy distribution. For example, under the illumination function, the spot energy of the specified fluorescence F and the second excitation light J2 are both non-uniformly distributed with "strong in the middle and weak around the edges"; under the projection display function, the spot energy of the specified fluorescence F and the second excitation light J2 are both uniformly distributed.

[0068] It should be noted that no light-diffusing device (e.g., compound eye lens) is placed in the optical path between the fluorescence module 40 and the light modulator 120, so as to avoid the specified fluorescence F with non-uniform energy distribution being uniformly diffused by the light-diffusing device, which would lead to non-compliance with regulatory requirements.

[0069] In some possible embodiments, referring to FIG10, the fluorescent wheel 410 is a first fluorescent wheel 412, and the fluorescent portion 4120 of the first fluorescent wheel 412 may include a red fluorescent portion 4121, a first yellow fluorescent portion 4122, and a first green fluorescent portion 4123. The first yellow fluorescent portion 4122, the red fluorescent portion 4121, the first green fluorescent portion 4123, and the transmission portion 4140 are adjacent to each other. Specifically, the red fluorescent portion 4121 is used to generate red fluorescence FR under the excitation of the second excitation light J2; the first yellow fluorescent portion 4122 is used to generate first yellow fluorescence FY1 under the excitation of the second excitation light J2; and the first green fluorescent portion 4123 is used to generate first green fluorescence FG1 under the excitation of the second excitation light J2. That is to say, the "designated fluorescence F" in this embodiment may include red fluorescence FR, first yellow fluorescence FY1, and first green fluorescence FG1.

[0070] Specifically, in the embodiment shown in Figure 10, the first yellow fluorescent part 4122, the red fluorescent part 4121, the first green fluorescent part 4123, and the transmission part 4140 are sequentially adjacent and arranged around the rotation center M. Therefore, during the rotation of the first fluorescent wheel 412, the red fluorescent FR, the first green fluorescent FG1, the third excitation light J3 (blue light), and the first yellow fluorescent FY1 are emitted from the first fluorescent wheel 412 in a time-sharing manner.

[0071] Compared to existing fluorescent wheels, the first fluorescent wheel 412 in this embodiment is equipped with a first yellow fluorescent part 4122. For the projection display function, by controlling the timing current, the proportions of red fluorescence FR, first green fluorescence FG1, third excitation light J3, and first yellow fluorescence FY1 in a specified light LD can be adjusted, thereby effectively achieving color temperature adjustment. For the lighting function, the addition of the first yellow fluorescence FY1 can effectively improve the lighting brightness and ensure lighting efficiency.

[0072] In some possible embodiments, please refer to Figure 11. The first fluorescent wheel 412 is a transmissive fluorescent wheel 414, through which the red fluorescent FR, the first yellow fluorescent FY1, and the first green fluorescent FG1 are transmitted to the optomechanical relay module 50.

[0073] In the embodiment shown in Figure 11, the fluorescence module 40 may further include a first reflector 420, which is disposed in the optical path of the second excitation light J2 and is used to reflect the second excitation light J2 to the transmissive phosphor wheel 414. The first reflector 420 can fold the optical path, so that the overall optical path structure of the light source device 200 can be more compact. Specifically, the first reflector 420 may be a reflector.

[0074] In the embodiment shown in Figure 11, the fluorescence module 40 may further include at least one first collecting lens 430. The at least one first collecting lens 430 is disposed in the optical path containing the red fluorescence FR, the first yellow fluorescence FY1, and the first green fluorescence FG1, serving to converge and collect the fluorescence, thereby ensuring efficient energy utilization of the fluorescence. Specifically, in Figure 11, there are two first collecting lenses 430, and both first collecting lenses 430 are convex lenses.

[0075] In some possible embodiments, referring to FIG12, the fluorescence module 40 may further include a first light combiner 440 and a guide assembly 450. The first light combiner 440 is disposed in the optical path of the second excitation light J2 and is used to reflect the second excitation light J2 to the first phosphor wheel 412.

[0076] In the embodiment shown in Figure 12, the first phosphor wheel 412 is a reflective phosphor wheel 416. The red phosphor FR, the first yellow phosphor FY1, and the first green phosphor FG1 are reflected by the reflective phosphor wheel 416 to the first light combiner 440. The first light combiner 440 is also used to transmit the red phosphor FR, the first yellow phosphor FY1, and the first green phosphor FG1 to the optomechanical relay module 50. Specifically, the first light combiner 440 can be a blue-reflecting and yellow-transmitting light combiner.

[0077] In some possible embodiments, the fluorescence module 40 may further include at least one second collecting lens 460. This second collecting lens 460 is disposed between the reflective fluorescence wheel 416 and the first light combiner 440, and is located in the optical path containing the red fluorescence FR, the first yellow fluorescence FY1, and the first green fluorescence FG1, serving to converge and collect the fluorescence to ensure efficient energy utilization. Specifically, in Figure 12, there are two second collecting lenses 460, both of which are convex lenses.

[0078] In the embodiment shown in Figure 12, the guiding component 450 is disposed in the optical path of the third excitation light J3 emitted from the reflective phosphor wheel 416. It guides the third excitation light J3 to the first light combiner 440, which in turn reflects the third excitation light J3 emitted from the guiding component 450 to the optomechanical relay module 50. In some possible embodiments, the guiding component 450 may include multiple mirrors, as shown in Figure 12. These mirrors may include a first mirror 4520, a second mirror 4540, and a third mirror 4560. These mirrors are sequentially disposed in the optical path of the third excitation light J3 emitted from the reflective phosphor wheel 416, reflecting the third excitation light J3 to the first light combiner 440, so that the third excitation light J3 can smoothly enter the optomechanical relay module 50.

[0079] In some possible embodiments, the guiding component 450 may further include a third collecting lens 4580, which is disposed in the optical path of the third excitation light J3 between the first reflector 4520 and the second reflector 4540. The third collecting lens 4580 is used to converge and collect the third excitation light J3 to ensure the energy utilization efficiency of the third excitation light J3. Specifically, the third collecting lens 4580 may be a convex lens, and the number of third collecting lenses 4580 may be one or more; this embodiment does not limit this.

[0080] In this embodiment, a reflective phosphor wheel 416 is used instead of the transmissive phosphor wheel 414 in the embodiment shown in Figure 11. This solves the problem of poor heat dissipation of the transmissive phosphor wheel 414, thereby improving the excitation efficiency of fluorescence. Of course, the optical path structure of the phosphor module 40 shown in Figure 11 is simple and suitable for applications with strict requirements on the size of the optical system 100 and good heat dissipation.

[0081] In this embodiment, the optomechanical relay module 50 is disposed on the optical path containing the third excitation light J3, the red fluorescence FR, the first yellow fluorescence FY1, and the first green fluorescence FG1. It guides the third excitation light J3, the red fluorescence FR, the first yellow fluorescence FY1, and the first green fluorescence FG1 to a designated position, which is suitable for setting up the optical modulator 120. That is, the "designated light LD" incident on the optical modulator 120 can be understood as a temporal mixture of the red fluorescence FR, the first green fluorescence FG1, the third excitation light J3, and the first yellow fluorescence FY1. In other words, during the operation of the light source device 200, the red fluorescence FR, the first green fluorescence FG1, the third excitation light J3, and the first yellow fluorescence FY1 are continuously and cyclically incident on the optical modulator 120.

[0082] In the embodiments shown in Figures 11 and 12, the optomechanical relay module 50 may include a first relay lens 510, a third reflector 520, and a first spherical mirror 530. The first relay lens 510, the third reflector 520, and the first spherical mirror 530 are sequentially arranged in the optical path containing the third excitation light J3, the red fluorescence FR, the first yellow fluorescence FY1, and the first green fluorescence FG1, guiding these light sources to the optical modulator 120. Specifically, the first relay lens 510 may be a convex lens, which converges the light rays. The third reflector 520 may be a mirror, which folds the optical path to make the overall optical path structure of the light source device 200 more compact. The first spherical mirror 530 converges and reflects the light rays.

[0083] It should be noted that the light emitted from the first spherical mirror 530 is suitable for direct incidence on the optical modulator 120. This means that no other optical components are needed between the first spherical mirror 530 and the optical modulator 120. Compared to the traditional prism and lens group scheme, the optical path of the optomechanical repeater module 50 in this embodiment is simpler, reducing the overall size of the light source device 200 and facilitating better heat dissipation for both the optical modulator 120 and the optomechanical repeater module 50.

[0084] In some possible embodiments, referring to FIG13, the fluorescent wheel 410 is a second fluorescent wheel 418, and the fluorescent portion 4120 of the second fluorescent wheel 418 may include an orange fluorescent portion 4124, a second yellow fluorescent portion 4125, and a second green fluorescent portion 4126. The second yellow fluorescent portion 4125, the orange fluorescent portion 4124, the second green fluorescent portion 4126, and the transmission portion 4140 are adjacent to each other. Specifically, the orange fluorescent portion 4124 is used to generate orange fluorescence FO under the excitation of the second excitation light J2; the second yellow fluorescent portion 4125 is used to generate second yellow fluorescence FY2 under the excitation of the second excitation light J2; and the second green fluorescent portion 4126 is used to generate second green fluorescence FG2 under the excitation of the second excitation light J2. That is, the "designated fluorescence F" in this embodiment may include orange fluorescence FO, second yellow fluorescence FY2, and second green fluorescence FG2.

[0085] Specifically, in the embodiment shown in Figure 13, the second yellow fluorescent portion 4125, the orange fluorescent portion 4124, the second green fluorescent portion 4126, and the transmission portion 4140 are sequentially adjacent and arranged around the rotation center M. Therefore, during the rotation of the second fluorescent wheel 418, the orange fluorescent FO, the second green fluorescent FG2, the third excitation light J3 (blue light), and the second yellow fluorescent FY2 are emitted from the second fluorescent wheel 418 in a time-sharing manner.

[0086] Compared to existing fluorescent wheels, the second fluorescent wheel 418 in this embodiment is equipped with a second yellow fluorescent part 4125. For the projection display function, by controlling the timing current, the proportions of orange fluorescence FO, second green fluorescence FG2, third excitation light J3, and second yellow fluorescence FY2 in a specified light LD can be adjusted, thereby effectively achieving color temperature adjustment. For the lighting function, the addition of the second yellow fluorescence FY2 can effectively improve the lighting brightness and ensure lighting efficiency.

[0087] Referring to Figure 14, the second fluorescent wheel 418 is a transmissive fluorescent wheel. Orange fluorescence FO, second yellow fluorescence FY2, and second green fluorescence FG2 are transmitted to the optomechanical relay module 50 via the second fluorescent wheel 418. Of course, the second fluorescent wheel 418 can also be a reflective fluorescent wheel to improve the excitation efficiency of fluorescence. Specifically, the optical path structure of the second fluorescent wheel 418 as a reflective fluorescent wheel can be referred to the optical path structure shown in Figure 12, and will not be repeated here.

[0088] In the embodiment shown in Figure 14, the fluorescence module 40 may further include at least one fourth collecting lens 470. This fourth collecting lens 470 is positioned in the optical path containing the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2, serving to converge and collect the fluorescence, thereby ensuring efficient energy utilization of the fluorescence. Specifically, in Figure 14, there are two fourth collecting lenses 470, both of which are convex lenses.

[0089] In the embodiment shown in Figure 14, the fluorescence module 40 may further include a second reflector 480, which is disposed in the optical path of the second excitation light J2 and is used to reflect the second excitation light J2 to the second phosphor wheel 418. The second reflector 480 can fold the optical path, so that the overall optical path structure of the light source device 200 can be more compact. Specifically, the second reflector 480 may be a reflector.

[0090] In the embodiment shown in FIG14, the light source device 200 may further include a supplementary light source 60 for generating red light R. Specifically, the supplementary light source 60 may include a supplementary light generator 610 and at least one fifth collecting lens 620, the supplementary light generator 610 being used to generate red light R.

[0091] In some possible embodiments, the supplementary light generator 610 can be a laser generator, in which case the red light R is a red laser. Specifically, the laser generator can integrate multiple red laser chips to enhance the brightness of the red laser. In other possible embodiments, the supplementary light generator 610 can be an LED light generator, in which case the red light R is red LED light. Specifically, the LED light generator can integrate multiple red LED beads to enhance the brightness of the red LED light.

[0092] At least one fifth collecting lens 620 is disposed in the optical path containing the red light R, serving to converge and collect the red light R, thereby ensuring the energy utilization efficiency of the red light R. Specifically, in Figure 14, there is one fifth collecting lens 620, which is a convex lens.

[0093] In this embodiment, the optomechanical relay module 50 is positioned on the optical path containing the red light R, the third excitation light J3, the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2. It is used to direct the red light R, the third excitation light J3, the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2 to a designated position, which is suitable for setting up the optical modulator 120. That is, the "designated light LD" incident on the optical modulator 120 can be understood as a temporal mixture of the red light R, the orange fluorescence FO, the second green fluorescence FG2, the third excitation light J3, and the second yellow fluorescence FY2. In other words, during the operation of the light source device 200, the red light R, the orange fluorescence FO, the second green fluorescence FG2, the third excitation light J3, and the second yellow fluorescence FY2 are continuously and cyclically incident on the optical modulator 120.

[0094] Compared to the light source device 200 in Figures 11 and 12, the designated light LD generated by the light source device 200 shown in Figure 14 also includes orange light (i.e., orange fluorescence FO), which can more effectively improve brightness, widen the color temperature adjustment range, and improve the color rendering index.

[0095] In the embodiment shown in Figure 14, the optomechanical relay module 50 may include a second light combiner 540, a second relay lens 550, and a second spherical mirror 560. The second light combiner 540, the second relay lens 550, and the second spherical mirror 560 are disposed in the optical path containing the red light R, the third excitation light J3, the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2, and are used to guide the red light R, the third excitation light J3, the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2 to the optical modulator 120.

[0096] Specifically, the second light combiner 540 can transmit red light R to the second relay lens 550, and reflect the third excitation light J3, orange fluorescence FO, second yellow fluorescence FY2, and second green fluorescence FG2 to the second relay lens 550. In one embodiment, the second light combiner 540 can be a red-transmitting and yellow-reflecting light combiner.

[0097] In some other possible embodiments, the second light combiner 540 can reflect the red light R to the second relay lens 550 and transmit the third excitation light J3, orange fluorescence FO, second yellow fluorescence FY2, and second green fluorescence FG2 to the second relay lens 550. Specifically, the second light combiner 540 can be a red-reflecting and yellow-transmitting light combiner. Researchers can flexibly adjust the light combining method of the second light combiner 540 according to the setting position of the light modulator 120; this embodiment does not impose specific limitations.

[0098] The second relay lens 550 can be a convex lens, which converges light rays. The second spherical mirror 560 converges and reflects light rays. The light rays emitted from the second spherical mirror 560 are suitable for direct incidence on the optical modulator 120. In other words, no other optical components are needed between the second spherical mirror 560 and the optical modulator 120. Compared to the traditional prism and lens group scheme, the optical path of the optomechanical relay module 50 in this embodiment is simpler, reducing the overall size of the light source device 200 and facilitating better heat dissipation for the optical modulator 120 and the optomechanical relay module 50.

[0099] In some possible embodiments, the optomechanical relay module 50 may further include a filter 570, which is disposed in the optical path containing the third excitation light J3, orange fluorescence FO, second yellow fluorescence FY2 and second green fluorescence FG2 between the second phosphor wheel 418 and the second light combiner 540. The filter 570 is used to filter out the bands of orange fluorescence FO that are far from red light (that is, the components in the orange band that do not belong to red light), so that when the light source device 200 realizes the projection display function, the purity of the red light component can be higher, so as to achieve better control of the image color gamut.

[0100] In some possible embodiments, the filter 570 may be selectively disposed in the optical path containing the third excitation light J3, the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2. For example, the optomechanical relay module 50 may also include a driver (not shown) for moving the filter 570. When the light source device 200 needs to perform a projection display function, the driver moves the filter 570 into the optical path containing the third excitation light J3, the orange fluorescence FO, the second yellow fluorescence FY2, and the second green fluorescence FG2 to filter the orange fluorescence FO and improve the image display quality. When the light source device 200 needs to perform an illumination function, the driver removes the filter 570 to increase the light intensity of the orange fluorescence FO, thereby improving the overall illumination brightness. Specifically, the filter 570 may be a filter used to transmit light with a wavelength greater than or equal to 580 nm.

[0101] This application provides a light source device 200 and an optical system 100 configured with the light source device 200. The light source device 200 may include an excitation light source 30, a fluorescence module 40, and an optomechanical relay module 50. The excitation light source 30 may include an excitation light generator 320 and multiple optical devices 340. The excitation light generator 320 generates a first excitation light J1. The multiple optical devices 340 form at least two shaping units 3410. One of the at least two shaping units 3410 is selectively located in the optical path of the first excitation light J1 and is used to optically shape the first excitation light J1 to generate a second excitation light J2. Specifically, the spot energy distribution of the second excitation light J2 generated by different shaping units 3410 is different. The fluorescence module 40 may include a fluorescence wheel 410, which is disposed in the optical path of the second excitation light J2. The fluorescence wheel 410 includes adjacent fluorescence portions 4120 and transmission portions 4140, which are arranged around the rotation center M of the fluorescence wheel 410. Specifically, the fluorescence portion 4120 is used to generate a specified fluorescence F under the excitation of the second excitation light J2; the transmission portion 4140 is used to transmit the second excitation light J2 to form a third excitation light J3. The optomechanical relay module 50 is arranged in the optical path where the third excitation light J3 and the specified fluorescence F are located, and it is used to guide the third excitation light J3 and the specified fluorescence F to a specified position.

[0102] Since at least two shaping units 3410 in the light source device 200 can achieve various different light spot energy distributions by sharing the same first excitation light J1, the optical system 100 only needs to set up one light source module 200 to achieve a variety of different optical functions. On the one hand, the hardware cost of the optical system 100 can be reduced; on the other hand, the space occupied by the optical system 100 can be reduced, realizing the miniaturization design of the optical system 100.

[0103] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.

[0104] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0105] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0107] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0108] 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 them. 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, include: Excitation light source, including excitation light generator and multiple optical devices; The excitation light generator is used to generate the first excitation light; The plurality of optical devices are used to form at least two shaping units, one of which is selectively located in the optical path of the first excitation light, for optically shaping the first excitation light to generate a second excitation light; The energy distribution of the second excitation light spot produced by different shaping units is different; A fluorescence module includes a fluorescence wheel disposed in the optical path of the second excitation light; the fluorescence wheel includes an adjacent fluorescence part and a transmission part; the fluorescence part is used to generate a specified fluorescence under the excitation of the second excitation light; the transmission part is used to transmit the second excitation light to form a third excitation light; as well as An optomechanical relay module is disposed on the optical path where the third excitation light and the designated fluorescence are located, and is used to guide the third excitation light and the designated fluorescence to a designated position.

2. The light source device according to claim 1, characterized in that, At least two shaping units include a first shaping unit and a second shaping unit. The energy distribution of the second excitation light generated by the first shaping unit is such that the energy intensity at the center of the second excitation light spot is greater than the energy intensity at the edge of the spot. The energy distribution of the second excitation light generated by the second shaping unit is such that the energy intensity is uniformly distributed from the center of the second excitation light spot to the edge of the spot. The excitation light source also includes a motion platform; the first shaping unit and the second shaping unit are mounted on the motion platform, and one of the first shaping unit and the second shaping unit moves to the optical path where the first excitation light is located under the drive of the motion platform.

3. The light source device according to claim 2, characterized in that, The motion platform is used to drive the first shaping unit and the second shaping unit to move along a specified direction, so that one of the first shaping unit and the second shaping unit moves to the optical path where the first excitation light is located.

4. The light source device according to claim 3, characterized in that, The plurality of optical devices include a first Gaussian scattering sheet, the first Gaussian scattering sheet being used to form at least a portion of the structure of the first shaping unit; When the first shaping unit moves to the optical path where the first excitation light is located, the first Gaussian scattering plate is located on the optical path where the first excitation light is located.

5. The light source device according to claim 4, characterized in that, The plurality of optical devices further include convex lenses and concave lenses, wherein the first Gaussian scattering sheet, the convex lens and the concave lens are arranged in sequence at intervals to jointly form the first shaping unit; when the first shaping unit moves to the optical path where the first excitation light is located, the first Gaussian scattering sheet, the convex lens and the concave lens are located in sequence on the optical path where the first excitation light is located; or The plurality of optical devices further include a single-row compound eye lens, wherein the single-row compound eye lens and the first Gaussian scattering plate are arranged at intervals to jointly form the first shaping unit; when the first shaping unit moves to the optical path where the first excitation light is located, the single-row compound eye lens and the first Gaussian scattering plate are sequentially located on the optical path where the first excitation light is located; and the side of the single-row compound eye lens with the microlens array is arranged facing the excitation light generator.

6. The light source device according to claim 3, characterized in that, The plurality of optical devices include a beam homogenizer for forming at least a portion of the structure of the second shaping unit; When the second shaping unit moves to the optical path where the first excitation light is located, the light homogenizer is located on the optical path where the first excitation light is located.

7. The light source device according to claim 2, characterized in that, The motion platform is used to drive the first shaping unit and the second shaping unit to rotate around a designated center, so that one of the first shaping unit and the second shaping unit rotates to the optical path where the first excitation light is located.

8. The light source device according to claim 7, characterized in that, The plurality of optical devices include a second Gaussian scattering plate and a freeform optical element, wherein the second Gaussian scattering plate and the freeform optical element are sequentially located on the optical path of the first excitation light; The freeform optical element rotates around the designated center; when the freeform optical element rotates to a first angle, the second Gaussian scattering sheet and the freeform optical element together form the first shaping unit; when the freeform optical element rotates to a second angle, the second Gaussian scattering sheet and the freeform optical element together form the second shaping unit, and the second angle is different from the first angle.

9. The light source device according to claim 8, characterized in that, The freeform optical component has a first surface, a second surface, a third surface, and a fourth surface that are sequentially adjacent to each other; when the freeform optical component is rotated to the first angle, the first surface is positioned toward the excitation light generator, and the second excitation light is emitted through the third surface; wherein, the first surface is a convex surface, and the third surface is a concave surface; When the freeform optical component is rotated to the second angle, the second surface is positioned facing the excitation light generator, and the second excitation light is emitted through the fourth surface; wherein, both the second surface and the fourth surface are provided with microlens arrays.

10. The light source device according to any one of claims 1 to 9, characterized in that, The first excitation light is blue light, the fluorescent wheel is a first fluorescent wheel, and the fluorescent part of the first fluorescent wheel includes a red fluorescent part, a first yellow fluorescent part, and a first green fluorescent part; the first yellow fluorescent part, the red fluorescent part, the first green fluorescent part, and the transmissive part are adjacent to each other; The red fluorescent portion is used to generate red fluorescence under the excitation of the second excitation light; the first yellow fluorescent portion is used to generate first yellow fluorescence under the excitation of the second excitation light; and the first green fluorescent portion is used to generate first green fluorescence under the excitation of the second excitation light. The optomechanical relay module is disposed in the optical path containing the third excitation light, the red fluorescence, the first yellow fluorescence, and the first green fluorescence, and is used to guide the third excitation light, the red fluorescence, the first yellow fluorescence, and the first green fluorescence to the designated position.

11. The light source device according to claim 10, characterized in that, The first fluorescent wheel is a transmissive fluorescent wheel, and the red fluorescence, the first yellow fluorescence, and the first green fluorescence are transmitted to the optomechanical relay module via the transmissive fluorescent wheel; The fluorescence module further includes a first reflector, which is disposed in the optical path of the second excitation light and is used to reflect the second excitation light to the transmissive fluorescence wheel.

12. The light source device according to claim 10, characterized in that, The fluorescence module also includes a first light combiner and a guiding component; The first light combining element is disposed in the optical path where the second excitation light is located, and is used to reflect the second excitation light to the first phosphor wheel; The first fluorescent wheel is a reflective fluorescent wheel, and the red fluorescence, the first yellow fluorescence, and the first green fluorescence are reflected to the first light combining element via the reflective fluorescent wheel; the first light combining element is also used to transmit the red fluorescence, the first yellow fluorescence, and the first green fluorescence to the optomechanical relay module; The guiding component is disposed in the optical path of the third excitation light emitted from the reflective phosphor wheel, and is used to guide the third excitation light to the first light combining component; the first light combining component is also used to reflect the third excitation light emitted from the guiding component to the optomechanical relay module.

13. The light source device according to claim 10, characterized in that, The designated location is suitable for setting up an optical modulator, and the optomechanical relay module includes a first relay lens, a third reflector, and a first spherical reflector; The first relay lens, the third reflector, and the first spherical mirror are sequentially arranged in the optical path containing the third excitation light, the red fluorescence, the first yellow fluorescence, and the first green fluorescence, for guiding the third excitation light, the red fluorescence, the first yellow fluorescence, and the first green fluorescence to the optical modulator; wherein the light emitted from the first spherical mirror is suitable for direct incident on the optical modulator.

14. The light source device according to any one of claims 1 to 9, characterized in that, The first excitation light is blue light, and the light source device further includes a supplementary light source for generating red light; the fluorescent wheel is a second fluorescent wheel, and the fluorescent part of the second fluorescent wheel includes an orange fluorescent part, a second yellow fluorescent part, and a second green fluorescent part; the second yellow fluorescent part, the orange fluorescent part, the second green fluorescent part, and the transmission part are adjacent to each other; The orange fluorescent portion is used to generate orange fluorescence under the excitation of the second excitation light; the second yellow fluorescent portion is used to generate second yellow fluorescence under the excitation of the second excitation light; and the second green fluorescent portion is used to generate second green fluorescence under the excitation of the second excitation light. The optomechanical relay module is disposed in the optical path containing the red light, the third excitation light, the orange fluorescence, the second yellow fluorescence, and the second green fluorescence, and is used to transmit the red light, the third excitation light, the orange fluorescence, the second yellow fluorescence, and the second green fluorescence to the designated position.

15. The light source device according to claim 14, characterized in that, The designated location is suitable for setting up an optical modulator. The optomechanical relay module includes a second light combiner, a second relay lens, and a second spherical mirror. The second light combiner, the second relay lens, and the second spherical mirror are arranged in the optical path containing the red light, the third excitation light, the orange fluorescence, the second yellow fluorescence, and the second green fluorescence. The second light combiner is used to transmit the red light to the second relay lens and reflect the third excitation light, the orange fluorescence, the second yellow fluorescence, and the second green fluorescence to the second relay lens. The second relay lens and the second spherical mirror are used to guide the red light, the third excitation light, the orange fluorescence, the second yellow fluorescence, and the second green fluorescence to the light modulator; wherein the light emitted from the second spherical mirror is suitable for direct incident on the light modulator.

16. The light source device according to claim 15, characterized in that, The optomechanical relay module also includes a filter element, which is disposed in the optical path containing the third excitation light, the orange fluorescence, the second yellow fluorescence, and the second green fluorescence between the second phosphor wheel and the second light combiner.

17. The light source device according to any one of claims 1 to 9, characterized in that, The transmission section includes multiple scattering media. The second excitation light is scattered by the multiple scattering media and then transmitted out of the transmission section to form the third excitation light.

18. An optical system, characterized in that, include: The light source device according to any one of claims 1 to 17, wherein the light source device is used to generate a specified light ray; as well as An optical modulator is positioned on the optical path of the specified light ray.

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