Light machine and projection equipment

Abstract

The invention relates to an optical machine which comprises a light source module, a light guide module and a wavelength conversion module. The light source module is used for emitting exciting light with a first wavelength; the light guide module is movably arranged on a light path of the exciting light and is used for receiving and guiding the exciting light; the wavelength conversion module is fixedly arranged on a light path of the exciting light and comprises a plurality of conversion modules, and each conversion module is used for receiving the exciting light; wherein the light guiding module is used for guiding the exciting light to enter different conversion modules according to a time sequence, each conversion module is further used for converting the exciting light into excited light and then emitting the excited light, and the wavelength of the excited light is different from that of the exciting light. The invention further relates to projection equipment comprising the ray machine.

Description

Technical Field

[0001] The present application relates to the field of optical technology, and in particular to an optical machine and a projection device including the optical machine. Background Art

[0002] Current laser projection equipment still uses a monochromatic laser diode as the main light source, and obtains multiple beams of light with different wavelengths by irradiating the light emitted by the monochromatic laser diode onto a rotating fluorescent wheel. However, since the fluorescent wheel needs to rotate continuously so that the fluorescent color blocks of each color are located in sequence on the optical path of the light emitted by the monochromatic laser diode, it will not only generate noise pollution, but also increase the overall volume of the optical machine. Summary of the invention

[0003] The present application discloses an optical machine and a projection device, which are helpful to reduce the noise during the operation of the optical machine.

[0004] In a first aspect, the present application relates to an optical machine, comprising: A light source module, used for emitting excitation light having a first wavelength; A light guiding module, movably disposed on the optical path of the excitation light, for receiving and guiding the excitation light; A wavelength conversion module is fixedly arranged on the optical path of the excitation light, and includes a plurality of conversion modules, each of which is used to receive the excitation light respectively; The light guiding module is used to guide the excitation light to be incident on different conversion modules in sequence, and each conversion module is also used to convert the excitation light into converted light and then emit the converted light, and the wavelength of the converted light is different from that of the excitation light.

[0005] The optical machine provided in the embodiment of the present application is configured to have a wavelength conversion module fixedly arranged on the optical path of the excitation light, each of the conversion modules being used to receive the excitation light respectively, a light guide module being movably arranged on the optical path of the excitation light, and being used to guide the excitation light emitted from the light source module to be incident on different conversion modules in a time sequence, each of the conversion modules being further used to convert the excitation light into a converted light and then emit it, thereby obtaining a converted light with different wavelengths. Compared with an optical machine that uses a fluorescent wheel to obtain a converted light with different wavelengths, the optical machine provided in the embodiment of the present application does not require a motor to drive the conversion module to rotate, which is beneficial to reducing noise during the operation of the optical machine and improving the user experience. Furthermore, since a motor is not required, the overall volume of the optical machine is reduced and the manufacturing cost is reduced.

[0006] In one embodiment, the wavelength conversion module further includes a substrate, and the plurality of conversion modules are disposed on a surface of the substrate on one side close to the light guiding module.

[0007] In one embodiment, the conversion module is a reflective conversion module, and the wavelength conversion module also includes at least one reflection module, and the reflection module and the multiple conversion modules are arranged in a matrix on a side surface of the substrate close to the light guiding module; the light guiding module guides the excitation light to be incident on different conversion modules and the reflection modules in a time sequence, and the reflection module is used to reflect the received excitation light.

[0008] In one embodiment, the conversion module is a transmissive conversion module.

[0009] In one embodiment, the light guiding module includes a reflective element arranged on the light emitting side of the light source module, the reflective element is used to receive and reflect the excitation light, and the reflective element is configured to be deflectable relative to the wavelength conversion module so that the excitation light is incident on the conversion modules located at different positions on the substrate.

[0010] In one embodiment, the light guiding module includes a transmission element arranged on the light emitting side of the light source module, and the transmission element is used to receive and emit the excitation light; the transmission element is configured to be deflectable relative to the wavelength conversion module so that the excitation light is incident on the conversion modules located at different positions on the substrate.

[0011] In one embodiment, the light guiding module includes at least one light-transmitting element arranged on the light-emitting side of the light source module, the at least one light-transmitting element is used to receive and emit the excitation light, the at least one light-transmitting element includes a first light-transmitting surface arranged on a side close to the light source module and a second light-transmitting surface opposite to the first light-transmitting surface, and the angle between at least one normal vector of the first light-transmitting surface and / or the second light-transmitting surface and the optical axis direction is not zero; The at least one light-transmitting element is configured to be movable relative to the wavelength conversion module in a direction perpendicular to the emission direction of the excitation light, so that the excitation light is incident on the conversion modules located at different positions on the substrate.

[0012] In one embodiment, the light-transmitting element is any one of a wedge prism, a plane lens, a spherical lens, an aspherical lens and a special-shaped lens.

[0013] In one embodiment, the optical machine further includes a control module, which is used to control the light guiding module to change the emission direction of the excitation light, so that the excitation light is incident on the conversion modules located at different positions on the substrate in a time sequence; and / or The control module is used to control the duration of the excitation light being incident on the conversion modules located at different positions on the substrate.

[0014] In one embodiment, projection sizes of at least two of the conversion modules on a surface of the substrate close to the light guiding module are different from each other.

[0015] In one embodiment, the optical machine further includes a light homogenization component, a light modulation component and a lens component arranged on the light output side of the wavelength conversion module; The light homogenization component is arranged on the side of the wavelength conversion module that emits the converted light, and the light homogenization component is used to homogenize the converted light; the light modulation component is used to receive the converted light after homogenization and modulate the converted light into image light; the lens component is used to receive the image light and project the image light.

[0016] In one embodiment, the optical machine further includes a focusing lens, which is disposed between the light guiding module and the wavelength conversion module, and is used to converge the excitation light emitted from the light guiding module.

[0017] In a second aspect, the present application also relates to a projection device, comprising: An optical machine as described in any of the above embodiments.

[0018] The projection device provided by the embodiment of the present application is provided with an optical machine as described in any of the above embodiments, wherein a wavelength conversion module in the optical machine is fixedly arranged on the optical path of the excitation light, each of the conversion modules is used to receive the excitation light respectively, and a light guiding module is movably arranged on the optical path of the excitation light, and is used to guide the excitation light emitted from the light source module to be incident on different conversion modules in a time sequence, and each of the conversion modules is further used to convert the excitation light into a converted light and then emit the converted light, wherein the wavelength of the converted light is different from the wavelength of the excitation light, thereby obtaining a converted light with different wavelengths. Compared with an optical machine that uses a fluorescent wheel to obtain a converted light with different wavelengths, the projection device provided by the embodiment of the present application does not need to be provided with a motor to drive the conversion module to rotate, which is beneficial to reducing noise during the operation of the projection device and improving the user experience. Furthermore, since a motor does not need to be provided, it is beneficial to reducing the overall volume of the projection device and reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the optical path of the optical machine in Example 1 of the present application.

[0021] Figure 2 It is a schematic diagram of the light path of the light guiding module in the first embodiment of the present application.

[0022] Figure 3 It is a structural schematic diagram of a wavelength conversion module in one embodiment of the present application.

[0023] Figure 4 It is a structural schematic diagram of a wavelength conversion module in another embodiment of the present application.

[0024] Figure 5 Schematic diagram of a current-time curve of a light guiding module in one embodiment of the present application.

[0025] Figure 6 Schematic diagram of the spot displacement-time curve of the excitation light in one embodiment of the present application.

[0026] Figure 7 It is a structural schematic diagram of a wavelength conversion module in another embodiment of the present application.

[0027] Figure 8 It is a schematic diagram of the optical path of an optical machine provided with a focusing lens in one embodiment of the present application.

[0028] Fig. 9 It is a schematic diagram of the optical path of the optical machine in the second embodiment of the present application.

[0029] Fig.10 It is a schematic diagram of the optical path of the optical machine in Example 3 of the present application.

[0030] Fig.11 It is a schematic diagram of the optical path of a projection device in one embodiment of the present application.

[0031] Description of main component symbols: Optical machine: 100, 200, 300 Light source module: 1 Lasers: 11 Light homogenization element: 13 Light guide module: 2 Reflective elements: 21 First axis: o1 Second axis: o2 Transmission elements: 23 Light-transmitting element: 25 First light-transmitting surface: 251 Second light-transmitting surface: 252 Wavelength conversion module: 3 Substrate: 31 Cooling fins: 311 Conversion modules: 33 First conversion module: 33a Second conversion module: 33b Third conversion module: 33c Reflection modules: 35 Control modules: 4 Focusing lens: 5 Light homogenization components: 6 First lens: 61 Homogenizing lens: 62 Second lens: 63 Third lens: 64 Reflector: 65 Fourth lens: 66 Light modulation components: 7 Lens components: 8 Projection equipment: 900 Excitation light: L1 Stimulating laser: L2 Image Light: L3 The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a component centered thereon. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a component centered thereon. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0034] It should be noted that the concepts such as "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0035] Embodiment 1 Please also read Figure 1 and Figure 2The optical machine 100 of the first embodiment of the present application includes a light source module 1, a light guide module 2, a wavelength conversion module 3, a control module 4 and a light homogenization component 6. The light source module 1 is used to emit the excitation light L1. The light guide module 2 is arranged on the optical path of the excitation light L1, and the wavelength conversion module 3 is fixed on the optical path of the excitation light L1. The light homogenization component 6 is arranged on the light output side of the wavelength conversion module 3.

[0036] The light source module 1 includes a laser 11 and a light homogenizing element 13, and the laser 11 is used to emit an excitation light L1 having a first wavelength. The light homogenizing element 13 is used to receive the excitation light L1 emitted from the laser 11, and control the light intensity distribution of the excitation light L1 to achieve the effect of light homogenization. In this embodiment, the laser 11 includes a blue laser diode (not shown), and the blue laser diode is used to emit an excitation light L1 having a first wavelength, that is, to emit a blue laser, that is, the first wavelength range is 360nm-480nm; in other embodiments, the first wavelength range can also be other wavelength intervals. The laser 11 can also include any one or a combination of several of a red laser diode, a green laser diode, and a yellow laser diode; or the laser 11 can also include any one of an LED light emitting diode, a micro light emitting diode, an active matrix organic light emitting diode, and a silicon-based organic light emitting diode, which is not limited in this application.

[0037] The light guiding module 2 is used to receive and guide the excitation light L1. The light guiding module 2 includes a reflective element 21 arranged on the light output side of the light source module 1, and the reflective element 21 is used to receive and reflect the excitation light L1. Specifically, the reflective element 21 in the light guiding module 2 is movably arranged on the optical path of the excitation light L1, that is, the reflective element 21 in the light guiding module 2 is movable relative to the fixed wavelength conversion module 3.

[0038] The reflective element 21 is configured to be deflectable relative to the wavelength conversion module 3 so that the excitation light L1 is incident on different positions of the wavelength conversion module 3. Specifically, the reflective element 21 is a reflective galvanometer, and the reflective element 21 includes a reflective lens (not shown) and a carrier (not shown). The reflective lens and the carrier are fixed and stacked. The reflective lens is arranged on a side close to the wavelength conversion module 3 and is used to reflect the excitation light L1. The carrier is configured to be deflected by a certain angle around the first axis o1 and the second axis o2 relative to the wavelength conversion module 3, respectively, so that the reflective lens can be driven by the carrier to tilt a certain angle around the first axis o1 or the second axis o2 relative to the wavelength conversion module 3, so as to realize the deflection of the reflective lens relative to the wavelength conversion module 3, thereby realizing the excitation light L1 is incident on different positions of the wavelength conversion module 3. Among them, the first axis o1 is perpendicular to the second axis o2, and the first axis o1 and the second axis o2 are both perpendicular to the stacking direction of the reflective lens and the carrier.

[0039] The light guiding module 2 may also include a base (not shown) for fixing a carrier of the reflective element 21. The base is fixed on a housing (not shown) of the optical machine 100. The base is stationary relative to the wavelength conversion module 3, that is, the base in the light guiding module 2 is stationary relative to the wavelength conversion module 3, so as to further enhance the stability of the reflective element 21 when it is deflected relative to the wavelength conversion module 3.

[0040] Please also read Figure 1 and Figure 3 The wavelength conversion module 3 includes a substrate 31, a plurality of conversion modules 33 and at least one reflection module 35. The substrate 31 includes a plurality of heat dissipation fins 311, which are arranged on a side of the substrate 31 away from the light guide module 2 and are used for heat dissipation to extend the service life of the wavelength conversion module 3, thereby extending the service life of the optical machine 100.

[0041] A plurality of conversion modules 33 and at least one reflection module 35 are disposed on a side surface of the substrate 31 close to the light guide module 2. Specifically, in the present embodiment, the wavelength conversion module 3 includes three conversion modules 33 and one reflection module 35. The three conversion modules 33 are respectively a first conversion module 33a, a second conversion module 33b, and a third conversion module 33c. The first conversion module 33a, the second conversion module 33b, the third conversion module 33c, and the reflection module 35 are arranged in a matrix on a side surface of the substrate 31 close to the light guide module 2; see Figure 4 In other embodiments, the wavelength conversion module 3 may include seven conversion modules 33 and one reflection module 35. The specific number of conversion modules 33 included in the wavelength conversion module 3 is set according to the converted light L2 to be converted, which is not limited in this application. The multiple conversion modules 33 and reflection modules 35 may also be arranged in a circular, triangular, annular or irregular arrangement, which is not limited in this application.

[0042] Please also refer to Figure 1 and Figure 3 Specifically, each conversion module 33 includes a wavelength conversion material covering the surface of the substrate 31 close to the light guide module 2. In this embodiment, the wavelength conversion material is a fluorescent ceramic material. By setting the wavelength conversion material to a fluorescent ceramic material, it is beneficial to improve the thermal stability and thermal conductivity of the conversion module 33. The fluorescent ceramic material can be any one of an oxide ceramic material, a nitride ceramic material, and a nitride oxide ceramic material. In other embodiments, the wavelength conversion material can also be a phosphor material.

[0043] Each conversion module 33 is used to receive the excitation light L1, and to convert the excitation light L1 into the stimulated light L2 and then emit it; specifically, the excitation light L1 incident on the surface of the conversion module 33 close to the light guide module 2 excites the wavelength conversion material to generate the stimulated light L2, and the stimulated light L2 is emitted from the surface of the conversion module 33 and incident on the light homogenizing component 6; wherein the wavelength of the excitation light L1 is different from the wavelength of the stimulated light L2. In the present embodiment, the conversion module 33 is a reflective conversion module, that is, the first conversion module 33a, the second conversion module 33b and the third conversion module 33c are used to receive the excitation light L1, and to convert the excitation light L1 into the stimulated light L2, and the stimulated light L2 is reflected from the surface of the first conversion module 33a, the second conversion module 33b and the third conversion module 33c close to the light guide module 2 and then incident on the light homogenizing component 6. In other embodiments, the conversion module 33 can also be a transmissive conversion module, which is not limited by the present application.

[0044] In this embodiment, the wavelengths of the converted light L2 emitted by the multiple conversion modules 33 are different, that is, the wavelengths of the converted light L2 emitted by the first conversion module 33a, the second conversion module 33b and the third conversion module 33c are different, that is, the wavelength conversion materials covered on the surface of the substrate 31 by the first conversion module 33a, the second conversion module 33b and the third conversion module 33c are different. Specifically, for example, when the excitation light L1 is blue light, and the wavelength conversion material on the surface of one side of the first conversion module 33a close to the light guiding module 2 is a red fluorescent ceramic material, the first conversion module 33a is used to convert the blue excitation light L1 into a red converted light L2, and emit the red converted light L2; when the excitation light L1 is blue light, and the wavelength conversion material on the surface of one side of the second conversion module 33b close to the light guiding module 2 is a yellow fluorescent ceramic material, the second conversion module 33b is used to convert the blue excitation light L1 into a yellow converted light L2, and emit the yellow converted light L2; when the excitation light L1 is blue light, and the wavelength conversion material on the surface of one side of the third conversion module 33c close to the light guiding module 2 is a green fluorescent ceramic material, the third conversion module 33c is used to convert the blue excitation light L1 into a green converted light L2, and emit the green converted light L2. In other embodiments, the wavelengths of the converted light L2 emitted by the multiple conversion modules 33 may also be the same, that is, the colors of the converted light L2 emitted by the multiple conversion modules 33 may also be the same, which is not limited in the present application.

[0045] The reflection module 35 is used to reflect the excitation light L1 emitted from the light guiding module 2 , that is, when the excitation light L1 is a blue laser, the reflection module 35 is used to reflect the blue laser emitted from the light guiding module 2 .

[0046] The wavelength conversion module 3 is fixedly arranged on the optical path of the excitation light L1, and the light guiding module 2 is used to guide the excitation light L1 to be incident on different conversion modules 33 or reflection modules 35 in sequence. The reflection element 21 in the light guiding module 2 is configured to be deflectable relative to the wavelength conversion module 3 so that the excitation light L1 is incident on the conversion modules 33 located at different positions on the substrate 31; for example, when the light source module 1 emits blue excitation light L1, the wavelength conversion material of the first conversion module 33a on the surface of one side close to the light guiding module 2 is a red fluorescent ceramic material, the wavelength conversion material of the second conversion module 33b on the surface of one side close to the light guiding module 2 is a yellow fluorescent ceramic material, and the wavelength conversion material of the third conversion module 33c on the surface of one side close to the light guiding module 2 is a green fluorescent ceramic material, the reflection element 21 in the light guiding module 2 reflects the excitation light L1 so that the excitation light L1 is first incident on the first conversion module 33a, the first conversion module 33a first receives the excitation light L1, and is used to convert the incident excitation light L1 into a red stimulated light L2, and outputs The reflective element 21 deflects relative to the wavelength conversion module 3 so that the excitation light L1 is incident on the second conversion module 33b located at a different position on the substrate 31. The second conversion module 33b receives the excitation light L1 and is used to convert the incident excitation light L1 into a yellow converted light L2, and emits the yellow converted light L2. The reflective element 21 deflects relative to the wavelength conversion module 3 so that the excitation light L1 is incident on the third conversion module 33c located at a different position on the substrate 31. The conversion module 33c then receives the excitation light L1, and is used to convert the incident excitation light L1 into a green converted light L2, and emit the green converted light L2; the reflective element 21 is finally deflected relative to the wavelength conversion module 3, so that the excitation light L1 is incident on the reflective modules 35 located at different positions on the substrate 31, and the reflective module 35 reflects the blue excitation light L1 emitted from the light guide module 2, and the reflective element 21 is finally deflected relative to the wavelength conversion module 3, so that the excitation light L1 is incident back to the first conversion module 33a.

[0047] The reflective element 21 in the light guiding module 2 deflects itself so that the excitation light L1 is incident on the first conversion module 33a, the second conversion module 33b, the third conversion module 33c and the reflective module 35 located at different positions on the substrate 31 in sequence, thereby emitting the converted light L2 and the excitation light L1 of different colors from the wavelength conversion module 3 in sequence; therefore, if the wavelength conversion module 3 includes N conversion modules 33, the wavelengths of the converted light L2 emitted by the N conversion modules 33 are different, and within one deflection period of the reflective element 21, N wavelengths of converted light L2 can be obtained.

[0048] The control module 4 is electrically connected to the light guide module 2, and is used to control the light guide module 2 to change the emission direction of the excitation light L1, so that the excitation light L1 is incident on the conversion modules 33 at different positions on the substrate 31 in a time sequence. The control module 4 can also be used to control the duration of the excitation light L1 incident on the conversion modules 33 at different positions on the substrate 31.

[0049] Please also read Figure 1 , Figure 3 and Figure 5 , Figure 5 is a schematic diagram of the current-time curve of the reflective element 21. Specifically, under the premise that the projection size of each conversion module 33 on the surface of the substrate 31 close to the light guide module 2 remains unchanged, the control module 4 controls the direction and size of the current passing through the reflective element 21, thereby controlling the tilt angle of the reflective element 21 and the duration of deflection to different tilt angles. Please refer to Figure 6 , Figure 6 : is a schematic diagram of the spot displacement-time curve of the excitation light L1. By controlling the direction and magnitude of the current passed into the reflective element 21, the duration of the spot of the excitation light L1 at the conversion modules 33 at different positions is controlled, that is, the duration of the excitation light L1 incident on the conversion modules 33 at different positions on the substrate 31 is controlled, and then the duty cycle of the converted light L2 emitted from different conversion modules 33 is controlled. For example, in one movement cycle of the reflective element 21, the control module 4 adjusts the dwell time of each conversion module 33 to 0.2ms, and the moving time between different conversion modules 33 is 0.05ms, that is, the total time for the reflective element 21 to complete one movement cycle is 1ms. By controlling the tilt angle of the reflective element 21 and the duration of deflection to different tilt angles by the control module 4, a plurality of converted light L2 with different wavelengths are emitted from the wavelength conversion module 3 in sequence, such as the red converted light L2, the yellow converted light L2, the green converted light L2 and the blue excitation light L1.

[0050] In this embodiment, the projection size of each conversion module 33 on the surface of the substrate 31 close to the light guide module 2 is the same. Figure 7In other embodiments, the projection sizes of at least two conversion modules 33 on the side surface of the substrate 31 close to the light guide module 2 are different from each other. Under the premise that the light guide module 2 deflects at a uniform speed so that the excitation light L1 is incident on the conversion modules 33 at different positions on the substrate 31 at a uniform speed in a time sequence, by adjusting the projection size of the conversion module 33 on the side surface of the substrate 31 close to the light guide module 2, the duration of the excitation light L1 incident on the conversion modules 33 at different positions on the substrate 31 can be adjusted, thereby controlling the duty cycle of the converted light L2 emitted from different conversion modules 33. In other embodiments, the duty cycle of the converted light L2 emitted from different conversion modules 33 can also be controlled by adjusting the fluorescence efficiency of the fluorescent ceramics of the conversion modules 33 at different positions on the substrate 31.

[0051] Please also read Figure 1 , Figure 3 and Figure 8 , the optical machine 100 also includes a plurality of focusing lenses 5, a light modulation component 7 and a lens component 8. The focusing lens 5 is arranged between the light guiding module 2 and the wavelength conversion module 3, and the focusing lens 5 is used to converge the excitation light L1 emitted from the light guiding module 2. The light modulation component 7 and the lens component 8 are arranged on the light emitting side of the wavelength conversion module 3. The light homogenizing component 6 is arranged on the side where the wavelength conversion module 3 emits the stimulated light L2. The light homogenizing component 6 is used to homogenize the stimulated light L2, and the light homogenizing component 6 includes a first lens 61, a light homogenizing lens 62, a second lens 63, a third lens 64 and a fourth lens 66 which are sequentially arranged on the optical path of the stimulated light L2. In this embodiment, a reflector 65 is also arranged between the third lens 64 and the fourth lens 66. In other embodiments, the third lens 64 and the fourth lens 66 may not be directly provided with a reflector 65, and this application does not limit it. The light modulation component 7 is used to receive the stimulated light L2 emitted from the fourth lens 66 after homogenization, and modulate the stimulated light L2 into the image light L3. The lens assembly 8 is used to receive the image light L3 and project the image light L3 outward.

[0052] The optical machine 100 provided in the first embodiment of the present application is fixedly provided with a wavelength conversion module 3 on the optical path of the excitation light L1, each conversion module 33 is used to receive the excitation light L1 respectively, the light guide module 2 is movably provided on the optical path of the excitation light L1, and is used to guide the excitation light L1 emitted from the light source module 1 to be incident on different conversion modules 33 in a time sequence, each conversion module 33 is also used to convert the excitation light L1 into the stimulated light L2 and then emit it, so that the stimulated light L2 with different wavelengths can be obtained. Compared with the optical machine 100 that uses a fluorescent wheel to obtain the stimulated light L2 with different wavelengths, the optical machine 100 provided in the embodiment of the present application does not need to be provided with a motor to drive the conversion module 33 to rotate, which is beneficial to reducing the noise during the operation of the optical machine 100 and improving the user experience. In addition, since a motor is not required, the overall volume of the optical machine 100 is reduced and the manufacturing cost is reduced.

[0053] Embodiment 2 Please also read Figure 3 and Fig. 9 The optical machine 200 provided in the second embodiment includes a light source module 1, a light guiding module 2, a wavelength conversion module 3 and a control module 4. The light source module 1 is used to emit the excitation light L1. The light guiding module 2 is arranged on the optical path of the excitation light L1, and the wavelength conversion module 3 is fixed on the optical path of the excitation light L1. The optical machine 200 provided in the second embodiment is different from that in the first embodiment in that the light guiding module 2 includes a transmission element 23 arranged on the light emitting side of the light source module 1, and the transmission element 23 is used to receive and emit the excitation light L1. The transmission element 23 is configured to be deflectable relative to the wavelength conversion module 3, so that the excitation light L1 is incident on the conversion modules 33 located at different positions on the substrate 31.

[0054] In this embodiment, the transmission element 23 is a flat lens; when the control module 4 drives the transmission element 23 to deflect relative to the wavelength conversion module 3, due to the difference between the refractive index of the transmission element 23 and the refractive index of air, the emission position of the excitation light L1 before the deflection of the transmission element 23 is different from the emission position of the excitation light L1 after the deflection of the transmission element 23, thereby achieving the goal of making the excitation light L1 incident on different positions of the wavelength conversion module 3.

[0055] The optical machine 200 provided in the second embodiment of the present application is fixedly arranged on the optical path of the excitation light L1 by setting a wavelength conversion module 3, each conversion module 33 is used to receive the excitation light L1 respectively, and the light guide module 2 is movably arranged on the optical path of the excitation light L1, and is used to guide the excitation light L1 emitted from the light source module 1 to be incident on different conversion modules 33 in a time sequence, and each conversion module 33 is also used to convert the excitation light L1 into the stimulated light L2 and then emit it, so that the stimulated light L2 with different wavelengths can be obtained. Compared with the optical machine 200 that uses a fluorescent wheel to obtain the stimulated light L2 with different wavelengths, the optical machine 200 provided in the embodiment of the present application does not need to set a motor to drive the conversion module 33 to rotate, which is beneficial to reducing the noise during the operation of the optical machine 200 and improving the user experience. In addition, since there is no need to set a motor, it is beneficial to reduce the overall volume of the optical machine 200 and reduce the manufacturing cost.

[0056] Embodiment 3 Please also read Figure 3 and Fig.10 The optical machine 300 provided in the third embodiment includes a light source module 1, a light guiding module 2, a wavelength conversion module 3 and a control module 4. The light source module 1 is used to emit the excitation light L1. The light guiding module 2 is arranged on the optical path of the excitation light L1, and the wavelength conversion module 3 is fixed on the optical path of the excitation light L1. The optical machine 300 provided in the third embodiment is different from that in the first embodiment in that the light guiding module 2 includes at least one light-transmitting element 25 arranged on the light-emitting side of the light source module 1, at least one light-transmitting element 25 is used to receive and emit the excitation light L1, and at least one light-transmitting element 25 is arranged to be movable relative to the wavelength conversion module 3 in a direction perpendicular to the emitting direction of the excitation light L1, so that the excitation light L1 is incident on the conversion modules 33 located at different positions on the substrate 31.

[0057] In this embodiment, the light guiding module 2 includes two light-transmitting elements 25, which are configured to be movable relative to the wavelength conversion module 3 in a direction perpendicular to the emission direction of the excitation light L1, so that the excitation light L1 is incident on the conversion modules 33 located at different positions on the substrate 31.

[0058] Each light-transmitting element 25 includes a first light-transmitting surface 251 arranged on a side close to the light source module 1 and a second light-transmitting surface 252 opposite to the first light-transmitting surface 251. The angle between the normal vector of the first light-transmitting surface 251 of each light-transmitting element 25 and the direction of the optical axis is not zero, that is, the first light-transmitting surface 251 of each light-transmitting element 25 has an angle relative to the translational direction, so that the emission position of the excitation light L1 before the light-transmitting element 25 is translated and the emission position of the excitation light L1 after the light-transmitting element 25 is translated are different, thereby achieving the goal of making the excitation light L1 incident on different positions of the wavelength conversion module 3. In other embodiments, the angle between at least one normal vector of the first light-transmitting surface 251 and the second light-transmitting surface 252 of the light-transmitting element 25 and the optical axis direction is not zero, or the angle between at least one normal vector of the second light-transmitting surface 252 of the light-transmitting element 25 and the optical axis direction is not zero, that is, the first light-transmitting surface 251 or the second light-transmitting surface 252 of each light-transmitting element 25 can be a curved surface or an inclined surface inclined relative to the translation direction, and the present application does not impose any restrictions thereto.

[0059] In this embodiment, the light-transmitting element 25 is a wedge-shaped prism; in other embodiments, the light-transmitting element 25 can also be any one of a plane lens, a spherical lens, an aspherical lens, and a special-shaped lens, which is not limited in this application.

[0060] The optical machine 300 provided in the third embodiment of the present application is fixedly provided with a wavelength conversion module 3 on the optical path of the excitation light L1, each conversion module 33 is used to receive the excitation light L1 respectively, the light guide module 2 is movably provided on the optical path of the excitation light L1, and is used to guide the excitation light L1 emitted from the light source module 1 to be incident on different conversion modules 33 in a time sequence, and each conversion module 33 is further used to convert the excitation light L1 into the stimulated light L2 and then emit it, so that the stimulated light L2 with different wavelengths can be obtained. Compared with the optical machine 300 that uses a fluorescent wheel to obtain the stimulated light L2 with different wavelengths, the optical machine 300 provided in the embodiment of the present application does not need to be provided with a motor to drive the conversion module 33 to rotate, which is beneficial to reducing the noise during the operation of the optical machine 300 and improving the user experience. In addition, since a motor is not required, the overall volume of the optical machine 300 is reduced and the manufacturing cost is reduced.

[0061] Please also read Figure 1 and Fig.11 The projection device 900 of the embodiment of the present application includes the optical machine 100 (200 or 300) in any of the above embodiments. The projection device 900 may be an electronic device with a projection function, such as a projector or a projector. The projection device 900 may also include a main control circuit board (not shown), and the control module 4 of the optical machine 100 (200 or 300) may serve as a main control circuit board or as an auxiliary circuit board electrically connected to the main control circuit board.

[0062] The projection device 900 provided in the embodiment of the present application is provided with an optical machine 100 (200 or 300) as in any of the above-mentioned embodiments, wherein the wavelength conversion module 3 in the optical machine 100 (200 or 300) is fixedly arranged on the optical path of the excitation light L1, and each conversion module 33 is used to receive the excitation light L1 respectively, and the light guiding module 2 is movably arranged on the optical path of the excitation light L1, and is used to guide the excitation light L1 emitted from the light source module 1 to be incident on different conversion modules 33 in a time sequence, and each conversion module 33 is also used to convert the excitation light L1 into the stimulated light L2 and then emit it, so that the stimulated light L2 with different wavelengths can be obtained. Compared with the optical machine 100 that uses a fluorescent wheel to obtain the stimulated light L2 with different wavelengths, the projection device 900 provided in the embodiment of the present application does not need to be provided with a motor to drive the conversion module 33 to rotate, which is beneficial to reducing the noise during the operation of the projection device 900 and improving the user experience. Moreover, since a motor is not required, the overall volume of the projection device 900 is reduced and the manufacturing cost is reduced.

[0063] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An optical machine, characterized in that: include: A light source module, used for emitting excitation light having a first wavelength; A light guiding module, movably disposed on the optical path of the excitation light, for receiving and guiding the excitation light; A wavelength conversion module is fixedly arranged on the optical path of the excitation light, and includes a plurality of conversion modules, each of which is used to receive the excitation light respectively; The light guiding module is used to guide the excitation light to be incident on different conversion modules in sequence, and each conversion module is also used to convert the excitation light into converted light and then emit the converted light, and the wavelength of the converted light is different from that of the excitation light.

2. The optical machine according to claim 1, characterized in that: The wavelength conversion module further comprises a substrate, and the plurality of conversion modules are arranged on a side surface of the substrate close to the light guiding module.

3. The optical machine according to claim 2, characterized in that: The conversion module is a reflective conversion module, and the wavelength conversion module also includes at least one reflection module. The reflection module and the multiple conversion modules are arranged in a matrix on a side surface of the substrate close to the light guiding module; the light guiding module guides the excitation light to be incident on different conversion modules and the reflection modules in a time sequence, and the reflection module is used to reflect the received excitation light.

4. The optical machine according to claim 2, characterized in that: The conversion module is a transmissive conversion module.

5. The optical machine according to claim 2, characterized in that: The light guiding module includes a reflective element arranged on the light emitting side of the light source module, the reflective element is used to receive and reflect the excitation light, and the reflective element is configured to be deflectable relative to the wavelength conversion module so that the excitation light is incident on the conversion modules located at different positions on the substrate.

6. The optical machine according to claim 2, characterized in that: The light guiding module includes a transmission element arranged on the light emitting side of the light source module, and the transmission element is used to receive and emit the excitation light; the transmission element is configured to be deflectable relative to the wavelength conversion module so that the excitation light is incident on the conversion modules located at different positions on the substrate.

7. The optical machine according to claim 2, characterized in that: The light guiding module comprises at least one light-transmitting element arranged on the light-emitting side of the light source module, the at least one light-transmitting element is used to receive and emit the excitation light, the at least one light-transmitting element comprises a first light-transmitting surface arranged on a side close to the light source module and a second light-transmitting surface opposite to the first light-transmitting surface, and the angle between at least one normal vector of the first light-transmitting surface and / or the second light-transmitting surface and the optical axis direction is not zero; The at least one light-transmitting element is configured to be movable relative to the wavelength conversion module in a direction perpendicular to the emission direction of the excitation light, so that the excitation light is incident on the conversion modules located at different positions on the substrate.

8. The optical machine according to claim 7, characterized in that: The light-transmitting element is any one of a wedge-shaped prism, a plane lens, a spherical lens, an aspherical lens and a special-shaped lens.

9. The optical machine according to claim 2, characterized in that: The optical machine further includes a control module, which is used to control the light guiding module to change the emission direction of the excitation light, so that the excitation light is incident on the conversion modules located at different positions on the substrate in a time sequence; and / or The control module is used to control the duration of the excitation light being incident on the conversion modules located at different positions on the substrate.

10. The optical machine according to claim 2, characterized in that: The projection sizes of at least two of the conversion modules on the surface of the substrate on one side close to the light guiding module are different from each other.

11. The optical machine according to claim 1, characterized in that: The optical machine also includes a light homogenization component, a light modulation component and a lens component arranged on the light output side of the wavelength conversion module; The light homogenization component is arranged on the side of the wavelength conversion module that emits the converted light, and the light homogenization component is used to homogenize the converted light; the light modulation component is used to receive the converted light after homogenization and modulate the converted light into image light; the lens component is used to receive the image light and project the image light.

12. The optical machine according to claim 1, characterized in that: The optical machine further includes a focusing lens, which is disposed between the light guiding module and the wavelength conversion module, and is used for converging the excitation light emitted from the light guiding module.

13. A projection device, characterized in that: include: An optical machine according to any one of claims 1 to 12.

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