Light source system and projection light machine

Abstract

The invention discloses a light source system and a projection light machine. The light source system comprises a primary light source module, a color gamut adjusting light source module, a light filtering assembly, a primary light source control unit, a color gamut adjusting light source module control unit and a light filtering assembly control unit. The primary light source module is used for emitting projection primary light, and the color gamut adjusting light source module is used for emitting color gamut adjusting light. The primary light source control unit can regulate and control the current magnitude and / or the duty ratio of the primary light source according to a preset requirement, and the light filtering assembly control unit can control the light filtering assembly to be switched between a first working state and a second working state according to the preset requirement. Therefore, the light filtering assembly can be arranged on the light emitting path of the light source adjusting module or arranged outside the light emitting path of the color gamut light source adjusting module. Through the mode, the color gamut and the brightness of the light source system are adjustable, so that the light source system can be applied to different scenes.

Description

Technical Field

[0001] The present application relates to the field of projection technology, and in particular to a light source system and a projection device. Background Art

[0002] In existing optical engines, brightness and color need to be weighed against each other. Take the monochromatic laser excited fluorescent light machine as an example. Since there is only one color wheel (ColorWheel), under a certain laser configuration, to achieve a larger color gamut, the upper limit of the brightness of the optical engine will be reduced. It is necessary to determine the design based on the product definition. When the design is finalized, the brightness and color gamut of the optical engine are determined and cannot be adjusted. For pure laser light machines, although a larger color gamut can be achieved, cost and severe speckle are constraints, and they can only be applied to specific scenarios. Therefore, the current optical engine cannot meet the needs of existing users and needs further improvement. Summary of the invention

[0003] The main technical problem solved by the present application is to provide a light source system and a projection optical machine, which can adjust the color gamut and brightness of the light source system.

[0004] In order to solve the above technical problems, a technical solution adopted in the present application is to provide a light source system, characterized in that it includes:

[0005] A primary color light source module, used for emitting projection primary color light;

[0006] A color gamut adjustment light source module, used for emitting color gamut adjustment light;

[0007] A filter component having a first working state arranged on the light output path of the color gamut adjustment light source module and a second working state arranged outside the light output path of the color gamut adjustment light source module, wherein the first working state and the second working state are switchable;

[0008] A primary color light source control unit, used to adjust the current size and / or duty cycle of the primary color light source according to predetermined requirements;

[0009] A color gamut adjustment light source module control unit, used to adjust the current size and / or duty cycle of the color gamut adjustment light source module based on the control logic of the primary color light source control unit or a predetermined requirement;

[0010] The filter component control unit is used to control the filter component to switch between the first working state and the second working state according to a predetermined requirement.

[0011] To solve the above technical problems, another technical solution adopted by the present application is to provide a projection light machine, including a light source system and a light modulator provided by the present application. The light source system is used to output projection light for the light modulator, and the light modulator is configured to modulate the projection light of the light source system to generate image light.

[0012] The beneficial effects of the present application are as follows: the light source system of the present application includes a primary color light source module, a color gamut adjustment light source module, a filter component, a primary color light source control unit, a color gamut adjustment light source module control unit and a filter component control unit. The primary color light source module is used to emit projection primary color light, and the color gamut adjustment light source module is used to emit color gamut adjustment light. The primary color light source control unit can adjust the current size and / or duty cycle of the primary color light source according to predetermined requirements, and the filter component control unit can control the filter component to switch between the first working state and the second working state according to predetermined requirements, so that the filter component can be set on the light output path of the adjustment light source module or outside the light output path of the color gamut adjustment light source module. Different from the prior art, the light source system of the present application can adjust the light color gamut and brightness of the light source system by changing the current size and / or duty cycle of the primary color light source and the color gamut adjustment light source module and the working state of the filter component to meet the application of the light source system in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the projection optical machine of the present application;

[0014] Figure 2 It is a structural schematic diagram of an embodiment of a light source system of the present application;

[0015] Figure 3 It is a schematic diagram of the specific structure of an embodiment of the light source system of the present application;

[0016] Figure 4 2 is a schematic diagram of the structure of the first monochromatic wavelength conversion wheel and the second monochromatic wavelength conversion wheel in an embodiment of the light source system of the present application;

[0017] Figure 5 is a schematic structural diagram of a first monochromatic wavelength conversion wheel and a second monochromatic wavelength conversion wheel in another embodiment of the light source system of the present application;

[0018] Figure 6 This is a structural schematic diagram of a light splitting and combining device in an embodiment of a light source system of the present application;

[0019] Figure 7 is the transmission spectrum of the light splitting and combining device in one embodiment of the light source system of the present application;

[0020] Figure 8 is the reflection spectrum of the light splitting and combining device in one embodiment of the light source system of the present application;

[0021] Fig. 9 is a structural schematic diagram of a color gamut adjustment light source module in another embodiment of the light source system of the present application;

[0022] Fig.10 It is a structural schematic diagram of a light combining device of an embodiment of a light source system of the present application;

[0023] Fig.11 is a schematic diagram of the current driving the light source when the light source system is in mode 1 in one embodiment of the present application;

[0024] Fig.12 is a schematic diagram of the current driving the light source when the light source system is in mode 2 and mode 3 in one embodiment of the present application;

[0025] Fig.13 It is a schematic diagram of the current driving the light source when the light source system is in mode 4 and mode 5 in one embodiment of the present application. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1 , Figure 1 It is a schematic structural diagram of an embodiment of a projection optical machine of the present application.

[0028] In this embodiment, the projection optical machine includes a light source system 10 and a light modulator 20 .

[0029] The light source system is used to emit a light source beam, and the light modulator 20 is disposed on the transmission path of the light source system's emitted light beam. The light modulator 20 is used to convert the light source beam into an image beam to generate image light.

[0030] Optionally, the light modulator 20 can be a reflective light modulator such as a Liquid Crystal On Silicon panel (LCoSpanel), a Digital Micro-mirror Device (DMD), etc., and the imaging element 120 can also be a transmissive light modulator such as a Transparent Liquid Crystal Panel, an Electro-Optical Modulator (Electro-Optical Modulator), a Magneto-Optic Modulator (Magneto-Optic Modulator), or an Acousto-Optic Modulator (AOM). However, the present application does not limit the type and type of the light modulator 20. In the present embodiment, the method, detailed steps, and implementation method of the light modulator 20 for converting the illumination light beam into the image light beam are well known to those skilled in the art and will not be described in detail herein.

[0031] In this embodiment, the light source system includes a combined light path of multiple light paths, so that the light source beam of this embodiment has the characteristics of high brightness and wide color gamut, and the brightness and color gamut of the light source beam are adjustable. Regarding the light source system of this application, please continue to refer to the description of the light source system embodiment below.

[0032] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] See also Figure 2 and Figure 3 , Figure 2 is a structural schematic diagram of an embodiment of a light source system of the present application, Figure 3 It is a schematic diagram of the specific structure of an embodiment of the light source system of the present application.

[0034] In this embodiment, the light source system includes a primary light source module 100 , a color gamut adjustment light source module 200 , a filter assembly 300 , a primary light source control unit 400 , a color gamut adjustment light source module control unit 500 and a filter assembly control unit 600 .

[0035] In this embodiment, a primary color light source is provided in the primary color light source module 100 for emitting projection primary color light. A color gamut adjustment light source is provided in the color gamut adjustment light source module 200 for emitting color gamut adjustment light, which can adjust the primary color light to change the color gamut and brightness of the final output light beam of the light source system.

[0036] The filter component 300 can filter out light of a specific wavelength, and the filter component 300 has a first working state and a second state that can be switched between each other.

[0037] When the filter assembly 300 is in the first working state, the filter assembly 300 is arranged on the light output path of the color gamut adjustment light source module 200. When the filter assembly 300 is in the second working state, the filter assembly 300 is arranged outside the light output path of the color gamut adjustment light source module 200. That is, the filter assembly 300 can enter the light output path of the color gamut adjustment light source module 200 or move out of the light output path of the color gamut adjustment light source module 200.

[0038] In this embodiment, the primary light source control unit 400 is used to control the primary light sources in the primary light source module, and to adjust the current size and / or duty cycle of the primary light source based on predetermined requirements so that the projection primary light emitted by the primary light source control unit 400 is emitted with a predetermined intensity and wavelength.

[0039] The color gamut adjustment light source module control unit 500 is used to control the color gamut adjustment light source in the color gamut adjustment light source module 200. The color gamut adjustment light source module control unit 500 can adjust the current size and / or duty cycle of the color gamut adjustment light source based on a predetermined requirement or based on the control logic of the primary color light source control unit 400, so that the color gamut adjustment light emitted by the color gamut adjustment light source module 200 is emitted with a predetermined intensity and wavelength.

[0040] The filter component control unit 600 is used to control the working state of the filter component 300 , that is, to control the filter component 300 to be set in the light path of the color gamut adjustment light source module 200 or to be set outside the light path of the color gamut adjustment light source module 200 .

[0041] Furthermore, the light source system may also include a light combining component 700, which is arranged on the optical path of the projection primary color light emitted by the primary color light source module 100 and the optical path of the color gamut adjusted light emitted by the color gamut adjustment light source module, and is used to combine the projection primary color light and the color gamut adjusted light.

[0042] Therefore, in this embodiment, the primary color light source control unit can be used to adjust the primary color light source module, the color gamut adjustment light source module control unit can be used to make adjustments, and the filter component control unit can be used to control the working state of the filter component. The light beam emitted by the light source system can be controlled in a variety of ways to obtain higher brightness and a wider color gamut to meet the needs of the light source system in different scenarios.

[0043] Regarding the light source system of the present application, please continue to refer to the description of the following embodiments.

[0044] Continue reading Figure 3 ,in Figure 3 The primary color light source control unit, the color gamut adjustment light source module control unit and the filter component control unit are not shown.

[0045] Specifically, the color gamut adjustment light source module 200 includes an excitation light source (not numbered in the figure), a color wheel device (not numbered in the figure), and a light splitting and combining device 104 .

[0046] The excitation light source is used to emit excitation light. In this embodiment, the excitation light source may include a first light source 101 and a second light source 102 .

[0047] The first light source 101 and the second light source 102 are laser light sources. In this embodiment, the first light source 101 and the second light source 102 are blue laser light sources, and the excitation light emitted by the first light source 101 and the second light source 102 is blue light. In other embodiments, the first light source 101 and the second light source 102 may also be light sources emitting other wavelengths, such as ultraviolet light sources, near-ultraviolet light sources, etc.

[0048] The color wheel device includes a first monochromatic wavelength conversion wheel 105 and a second monochromatic wavelength conversion wheel 109. The first monochromatic wavelength conversion wheel 105 is arranged on the optical path of the light emitted by the first light source 101, and is used to convert the light emitted by the first light source 101 into a first light beam of a first wavelength. The second monochromatic wavelength conversion wheel 109 is arranged on the optical path of the light emitted by the second light source 102, and is used to convert the light emitted by the second light source 102 into a second light beam of a second wavelength.

[0049] See also Figure 4 , Figure 4 It is a schematic diagram of the structure of the first monochromatic wavelength conversion wheel and the second monochromatic wavelength conversion wheel in one embodiment of the light source system of the present application.

[0050] Optionally, the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 both contain only one wavelength conversion material. In this embodiment, the wavelength conversion material of the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 is fluorescent powder, and the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are both monochromatic fluorescent wheels. Since the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are both monochromatic fluorescent wheels, in this embodiment, the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 may not be provided with a color-correcting sheet, so that the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 can increase the area of ​​the substrate and the heat sink, thereby improving the luminous efficiency of the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109.

[0051] The color of the phosphor on the first monochromatic wavelength conversion wheel 105 is different from the color of the phosphor on the second monochromatic wavelength conversion wheel 109. The color of the phosphor on the first monochromatic wavelength conversion wheel 105 can be red, yellow, green, etc.; the color of the phosphor on the second wavelength conversion device 30 can be red, yellow, green, etc. In this embodiment, the phosphor on the first monochromatic wavelength conversion wheel 105 is green, and the phosphor on the second monochromatic wavelength conversion wheel 109 is red, that is, the first light beam is green light, and the second light beam is red light.

[0052] Optionally, the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are reflective monochromatic wavelength conversion wheels, that is, after the excitation light is irradiated on the first monochromatic wavelength conversion wheel 105 or the second monochromatic wavelength conversion wheel 109, the converted light excited will be reflected by the first monochromatic wavelength conversion wheel 105 or the second monochromatic wavelength conversion wheel 109.

[0053] Optionally, the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 may be rotating or stationary. If the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are rotating, the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 have good heat dissipation performance, which increases their service life; if the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are stationary, no noise is generated, so that the entire system has a good mute effect. Of course, when the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are stationary, heat can be fanned out through heat dissipation equipment such as a radiator and a fan.

[0054] See also Figure 5 , Figure 5 It is a schematic diagram of the structure of the first monochromatic wavelength conversion wheel and the second monochromatic wavelength conversion wheel in another embodiment of the light source system of the present application.

[0055] In this embodiment, the first monochromatic wavelength conversion wheel 105 may also be provided with a first blank area 1051, and the first blank area 1051 is used to reflect the light beam emitted by the first light source 101, and does not convert the wavelength of the light beam emitted by the first light source 101. The second monochromatic wavelength conversion wheel 109 may also be provided with a second blank area 1091, and the second blank area 1091 is used to reflect the light beam emitted by the second light source 102, and does not convert the wavelength of the light beam emitted by the second light source 102, so that the reflected light generated by the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 is not a single color light beam, the color gamut adjustment light source module can generate three colors of primary color light, and the entire color gamut adjustment light source module can be used as a primary color light alone.

[0056] Furthermore, the color gamut adjustment light source module further includes a first light homogenizer 113 and a second light homogenizer 103 .

[0057] The first light source 101 and the second light source 102 are disposed on the same side of the second light homogenizer 103 and emit light beams toward the second light homogenizer 103 simultaneously.

[0058] The second light homogenizer 103 homogenizes the light beams emitted by the first light source 101 and the second light source 102 , and then directs the homogenized light beams toward the light splitting and combining device 104 .

[0059] Optionally, the color gamut adjustment light source module further includes a first collecting lens 106 , a second collecting lens 107 , a third collecting lens 110 and a fourth collecting lens 111 .

[0060] The first collecting lens 106 and the second collecting lens 107 are sequentially arranged between the first monochromatic wavelength conversion wheel 105 and the light splitting and combining device, and are used to collect the output light of the first light source and collimate the first light beam output from the first monochromatic wavelength conversion wheel 105 .

[0061] The third collecting lens 110 and the fourth collecting lens 111 are sequentially arranged between the second monochromatic wavelength conversion wheel 109 and the light splitting and combining device, and are used to collect the output light of the second light source and collimate the first light beam output from the second monochromatic wavelength conversion wheel 109 .

[0062] See also Figure 3 and Figure 6 , Figure 6 1 is a schematic diagram of the structure of the light splitting and combining device in one embodiment of the light source system of the present application. In this embodiment, the light splitting and combining device 104 is arranged on the exit light path of the first light source 101 and the second light source 102 of the excitation light source, the first monochromatic wavelength conversion wheel 105, and the second monochromatic wavelength conversion wheel 109, and is used to make the lasers emitted by the first light source 101 and the second light source 102 respectively incident on the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109, and the first light beam and the second light beam are emitted along the same light path after being acted upon by the light splitting and combining device 104.

[0063] The first light homogenizer 113 is disposed on the light splitting and light combining device 104 and the light combining device ( Figure 3 unlabeled), for homogenizing the first light beam and the second light beam.

[0064] The side of the light splitting and combining device 104 that faces the light beams emitted by the first light source 101 and the second light source 102 includes a first area 1042 and a second area 1041. The second area 1041 can reflect light beams at a specific wavelength. For example, in this embodiment, the second area 1041 has a function of reflecting blue and transmitting yellow, and can reflect the blue light beam emitted by the first light source 101, and the first monochromatic wavelength conversion wheel 105 is arranged on the optical path of the blue light beam, receives the blue light beam and reflects the first light beam.

[0065] In this embodiment, the blue light beam emitted by the second light source 102 can pass through the first area 1042. The second monochromatic wavelength conversion wheel 109 is arranged on the optical path of the transmitted blue light beam, receives the blue light beam and reflects the second light beam. The incident angles of the light beams emitted by the first light source 101 and the second light source 102 incident on the light splitting and combining device 104 are both 45°.

[0066] Combination Figure 2 and Figure 3 In this embodiment, the filter assembly 300 includes a first filter element 108 and a second filter element 112 .

[0067] The first filter element 108 has a first working state and a second working state. When the first filter element 108 is in the first working state, the first filter element 108 is arranged between the first monochromatic wavelength conversion wheel 105 and the light splitting and light combining device 104. The first light beam emitted by the first monochromatic wavelength conversion wheel 105 is filtered by the first filter element 108 and then incident on the light splitting and light combining device 104. When the first filter element 108 is in the second working state, the first filter element 108 is arranged outside the first monochromatic wavelength conversion wheel 105 and the light splitting and light combining device 104.

[0068] The second filter element 112 has a first working state and a second working state. When the second filter element 112 is in the second working state, the second filter element 112 is arranged between the second monochromatic wavelength conversion wheel 109 and the light splitting and light combining device 104. When the second filter element 112 is in the second working state, the second filter element 112 is arranged outside the second monochromatic wavelength conversion wheel 109 and the light splitting and light combining device 104.

[0069] Optionally, the first filter element 108 and the second filter element 112 may be filters.

[0070] When the first filter element 108 is in the first working state, the first light beam passes through the first collecting lens 106 , the second collecting lens 107 , and the first filter element 108 in sequence and then enters the light splitting and combining device 104 again, and then enters the first light homogenizing element 113 after passing through the light splitting and combining device 104 .

[0071] When the second filter element 112 is in the first working state, the second light beam passes through the third collecting lens 110, the fourth collecting lens 111, and the second filter element 112 in sequence and then enters the light splitting and combining device 104 again, and is reflected by the light splitting and combining device 104 to the first light homogenizing element 113. The incident angles of the first light beam and the second light beam emitted by the light splitting and combining device 104 are both 45°.

[0072] The filter component control unit 600 can control the working state of the first filter element 108 and the second filter element 112. For example, the filter component control unit 600 controls the first filter element 108 to switch between the first working state and the second working state, so that the first filter element 108 is set between or outside the first monochromatic wavelength conversion wheel 105 and the light splitting and combining device 104; or the filter component control unit 600 controls the second filter element 112 to switch between the first working state and the second working state, so that the second filter element 112 is set between or outside the second monochromatic wavelength conversion wheel 109 and the light splitting and combining device 104. That is, the filter component control unit 600 can control whether the first light beam and the second light beam need to be filtered based on a predetermined demand or based on the control logic of the primary color light source control unit.

[0073] See also Figure 7 , Figure 7 It is the transmission spectrum of the light splitting and combining device in one embodiment of the light source system of the present application, wherein the shaded portion is the transmission spectrum of green fluorescence. As can be seen from the above, in this embodiment, the first light beam is green fluorescence, and the light splitting and combining device 104 can transmit most of the first light beam.

[0074] See also Figure 8 , Figure 8 It is the reflection spectrum of the light splitting and combining device in the first embodiment of the light source system of the present application, wherein the shaded part is the reflection spectrum of red fluorescence. As can be seen from the above, in this embodiment, the second light beam is red fluorescence, and the light splitting and combining device 104 can reflect most of the second light beam.

[0075] Through the above optical path, the first light beam and the second light beam enter the first light homogenizer 113 , and enter the light combining device after being homogenized by the first light homogenizer 113 .

[0076] See also Fig. 9 , Fig. 9 It is a structural schematic diagram of a color gamut adjustment light source module in another embodiment of the light source system of the present application.

[0077] In this embodiment, the color gamut adjustment light source module includes a first light source 101, a third light homogenizer 116, a first converging lens 117, a first monochromatic wavelength conversion wheel 105, a first collecting lens 106, a second collecting lens 107, a first filtering element 108, a second light source 103, a fourth light homogenizer 114, a second converging lens 115, a third collecting lens 110, a fourth collecting lens 111, a second monochromatic wavelength conversion wheel 109, a second filtering element 112, a light splitting and combining device 104 and a first light homogenizer 113.

[0078] Compared with the previous embodiment, in this embodiment, the first monochromatic wavelength conversion wheel 105 and the second monochromatic wavelength conversion wheel 109 are transmissive monochromatic wavelength conversion wheels, that is, the converted light excited after the excitation light is irradiated on the first monochromatic wavelength conversion wheel 105 or the second monochromatic wavelength conversion wheel 109 will be transmitted through the first monochromatic wavelength conversion wheel 105 or the second monochromatic wavelength conversion wheel 109.

[0079] The third light homogenizer 116, the first converging lens 117 and the first monochromatic wavelength conversion wheel 105 are arranged along the optical path of the light beam emitted by the first light source 101. The light beam emitted by the first light source 101 is homogenized by the third light homogenizer 116 and converged by the first converging lens 117, and then incident on the first monochromatic wavelength conversion wheel 105. The first monochromatic wavelength conversion wheel 105 excites the first light beam and then passes through the first monochromatic wavelength conversion wheel 105.

[0080] The fourth light homogenizer 114, the second converging lens 115, and the second monochromatic wavelength conversion wheel 109 are arranged along the optical path of the light beam emitted by the second light source 102. The light beam emitted by the second light source 102 is homogenized by the fourth light homogenizer 114 and converged by the second converging lens 115, and then incident on the second monochromatic wavelength conversion wheel 109. The second monochromatic wavelength conversion wheel 109 excites the second light beam, which then passes through the second monochromatic wavelength conversion wheel 109.

[0081] The first collecting lens 106 and the second collecting lens 107 are sequentially arranged on the optical path of the first light beam passing through the first monochromatic wavelength conversion wheel 105 to collect the first light beam and convert it into a parallel first light beam.

[0082] The third collecting lens 110 and the fourth collecting lens 111 are sequentially arranged on the optical path of the second light beam passing through the second monochromatic wavelength conversion wheel 109 to collect the second light beam and convert it into a parallel second light beam.

[0083] The first filter element 108 has a first working state and a second working state. When the first filter element 108 is in the first working state, the first filter element 108 is arranged between the first monochromatic wavelength conversion wheel 105 and the light splitting and light combining device 104. The first light beam emitted by the first monochromatic wavelength conversion wheel 105 is filtered by the first filter element 108 and then incident on the light splitting and light combining device 104. When the first filter element 108 is in the second working state, the first filter element 108 is arranged outside the first monochromatic wavelength conversion wheel 105 and the light splitting and light combining device 104.

[0084] The second filter element 112 has a first working state and a second working state. When the second filter element 112 is in the second working state, the second filter element 112 is arranged between the second monochromatic wavelength conversion wheel 109 and the light splitting and light combining device 104. When the second filter element 112 is in the second working state, the second filter element 112 is arranged outside the second monochromatic wavelength conversion wheel 109 and the light splitting and light combining device 104.

[0085] Optionally, the first filter element 108 and the second filter element 112 may be filters.

[0086] The first light beam passes through the first collecting lens 106 , the second collecting lens 107 , and the first filter element 108 in sequence and then enters the light splitting and combining device 104 . After passing through the light splitting and combining device 104 , the first light beam enters the first light homogenizing element 113 .

[0087] The second light beam passes through the third collecting lens 110, the fourth collecting lens 111, and the second filter element 112 in sequence and is incident on the light splitting and combining device 104, and is reflected by the light splitting and combining device 104 to the first light homogenizing element 113. The incident angles of the first light beam and the second light beam incident on the light splitting and combining device 104 are both 45°.

[0088] Continue reading Figure 2 and Figure 3 In this embodiment, the primary color light source module includes a first laser light source 201, a second laser light source 203, a third laser light source 205 and a laser light combining device.

[0089] The first laser light source 201, the second laser light source 203 and the third laser light source 205 emit lasers respectively. The laser light combining device is arranged on the light paths of the first laser light source 201, the second laser light source 203 and the third laser light source 205, and combines the light beams emitted by the first laser light source 201, the second laser light source 203 and the third laser light source 205.

[0090] The primary color light source module further includes a light homogenizing device 210 for homogenizing the output light of the first laser light source 201 , the second laser light source 203 and the third laser light source 205 . Optionally, the light homogenizing device 210 is a square rod.

[0091] Optionally, the first laser light source 201 is a blue laser light source, the second laser light source 203 is a green laser light source, the third laser light source 205 is a red laser light source, and the primary color lights include blue light, green light, and red light.

[0092] In this embodiment, the laser light combining device further includes a first reflector 202 , a blue-transmitting and green-reflecting film 204 , a second reflector 206 , and a blue-transmitting, green-reflecting and red-reflecting film 207 .

[0093] The primary color light source module further includes a compression lens 208 , a scattering wheel 209 , a first relay lens 211 , a third reflector 212 and a second relay lens 213 .

[0094] The first laser light source 201 emits a blue laser beam toward the first reflector 202 . The blue laser beam is reflected by the first reflector 202 to the blue-transparent anti-green film 204 . The blue-transparent anti-green film 204 transmits the blue laser beam. After passing through the blue-transparent anti-green film 204 , the blue laser beam is incident on the second reflector 206 .

[0095] The second laser light source 203 emits a green laser beam toward the blue-transmitting and green-reflecting film 204 . The green laser beam is reflected by the blue-transmitting and green-reflecting film 204 to be consistent with the propagation path of the blue laser beam, and both are incident on the second reflector 206 .

[0096] The second reflector 206 reflects the blue laser beam and the green laser beam to the blue-green-reflective-red film 207. The blue-green-reflective-red film 207 has a transmission effect on the blue laser beam and the green laser beam. The blue laser beam and the green laser beam can pass through the blue-green-reflective-red film 207 and be incident on the compression lens 208.

[0097] The third laser light source 205 emits a red laser beam toward the blue-green-transparent red-reflecting film 207 . The red laser beam is reflected by the blue-green-transparent red-reflecting film 207 , and after reflection, the propagation path is consistent with that of the blue laser beam and the green laser beam.

[0098] The blue laser beam, the green laser beam and the red laser beam are incident on the compression lens 208 together, and are converged by the compression lens 208 and irradiated to the scattering wheel 209 to reduce the speckle phenomenon of light.

[0099] The excitation light transmitted through the scattering wheel 209 is incident on the light homogenizing device 210 for homogenization to obtain uniform mixed light.

[0100] The first relay lens 211 is arranged on the optical path of the mixed light. After passing through the first relay lens 211, the mixed light is incident on the third reflector 212. The third reflector 212 reflects the mixed light to the second relay lens 213. The mixed light passing through the second relay lens 213 is used as the projection primary color light emitted by the primary color light source module.

[0101] Furthermore, the light combining assembly 700 includes a light combining device 301 .

[0102] The light combining device 301 is disposed on the light splitting and combining device 104 and the outgoing light path of the primary light source, and the projected primary light is combined with the first light beam and the second light beam through the light combining device 301 .

[0103] Specifically in this embodiment, the light combining device 301 is disposed on the output light path of the first light homogenizer 113 and the second relay lens 213 , and the color gamut adjusted light output by the first light homogenizer 113 and the projection primary color light output by the second relay lens 213 are combined by the light combining device 301 .

[0104] The color gamut adjusted light emitted by the first light homogenizer 113 is incident from one side of the light combining device 301 at an angle of 45° and passes through the light combining device 301. The projection primary color light emitted by the second relay lens 213 is incident from the other side of the light combining device 301 at an angle of 45° and is reflected by the light combining device 301.

[0105] See also Fig.10 , Fig.10 It is a structural schematic diagram of a light combining device of an embodiment of a light source system of the present application.

[0106] The light combining device includes a central area 3012 and an edge area 3011. The projection primary color light emitted by the second relay lens 213 enters the central area 3012, and the central area 3012 can reflect the projection primary color light. The edge area 3011 is used to transmit the color gamut adjustment light of the first light beam and the second light beam.

[0107] Furthermore, the light combining assembly 700 further includes a third relay lens 302 , a fourth reflector 303 , a fourth relay lens 304 , a fifth reflector 305 , a fifth relay lens 306 and a prism 307 .

[0108] After being acted upon by the light combining device 301 , the color gamut adjusted light and the projection primary color light propagate in the same direction, are incident on the third relay lens 302 , and are incident on the fourth reflector 303 after passing through the third relay lens 302 .

[0109] The fourth reflector 303 reflects the color gamut adjusted light and the projection primary color light to the fourth relay lens 304. The color gamut adjusted light and the projection primary color light pass through the fourth relay lens 304 and are incident on the fifth reflector 305. The fifth reflector 305 reflects the color gamut adjusted light and the projection primary color light to the fifth relay lens 306. The color gamut adjusted light and the projection primary color light are converged by the fifth relay lens 306 and are incident on the prism 307 to be combined.

[0110] Since the light source system in the embodiment adopts the color gamut adjustment light source module to combine the expansion amount of the primary color light source module, the regional loss of the color gamut adjustment light is reduced. At the same time, the expansion amount of the projected primary color light is small, the F number of the illumination luminous flux is large, and the light output efficiency of the projection system is improved.

[0111] Optionally, the color gamut adjustment light source module 200 and the primary color light source module 100 in this embodiment may work simultaneously or individually.

[0112] When the color gamut adjustment light source module 200 is started to work alone, the light emitted by the light source system is pure fluorescence and / or blue laser. At the same time, the first filter element 108 and the second filter element 112 can be controlled by the filter component control unit to control the working state, that is, according to specific needs, specifically according to specific usage scenarios, whether the first filter element 108 enters the light path of the first light beam, and / or whether the second filter element 112 enters the light path of the second light beam, so as to adjust the color gamut and brightness of the light emitted by the light source system.

[0113] When the primary color light source module 100 is started to work alone, the light emitted by the light source system is pure laser light with a high color gamut.

[0114] The color gamut adjustment light source module 200 and the primary color light source module 100 can work simultaneously to expand the amount of light combined, and the color gamut and brightness that can be adjusted by the light source system have a larger range.

[0115] The primary color light source control unit 400 can adjust the current size and / or duty cycle of the primary color light source based on a predetermined requirement, so that the projection primary color light emitted by the primary color light source control unit 400 is emitted with a predetermined intensity and wavelength. The color gamut adjustment light source module control unit 500 can adjust the current size and / or duty cycle of the color gamut adjustment light source based on a predetermined requirement or based on the control logic of the primary color light source control unit 400, so that the color gamut adjustment light emitted by the color gamut adjustment light source module 200 is emitted with a predetermined intensity and wavelength. Specifically, for example, when the color gamut adjustment light source module is started to work alone, the current size and / or duty cycle of the color gamut adjustment light source can be adjusted according to the predetermined requirement; when the color gamut adjustment light source module and the color gamut adjustment light source module 200 and the primary color light source module 100 work simultaneously, the color gamut adjustment light source module control unit adjusts the current size and / or duty cycle of the color gamut adjustment light source based on the control logic of the primary color light source control unit.

[0116] The following takes the control methods of the primary color light source control unit 400, the color gamut adjustment light source module control unit 500, and the filter component control unit 600 in the embodiment of the light source system of the present application as examples to illustrate the technical effects that can be achieved by the light source system of the present application.

[0117] See also Figure 3 and Fig.11 , Fig.11 FIG. 1 is a schematic diagram of a current driving a light source when the light source system is in mode 1 in an embodiment of the present application.

[0118] The horizontal axes B, R, G, and Y represent the time intervals occupied by the blue, red, green, and yellow color fields, and the vertical axes represent the current values ​​corresponding to the first light source 101 , the second light source 102 , the first laser light source 201 , the second laser light source 203 , and the third laser light source 205 .

[0119] When the light source system of the present embodiment is in mode 1, the primary light source control unit 400 controls the primary light source module 100, so that the first laser light source 201 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment B, and is turned off in other color time periods; the second laser light source 203 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods; the third laser light source 205 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods.

[0120] The color gamut adjustment light source module control unit 500 controls the color gamut adjustment light source module 200. The first light source 101 of the color gamut adjustment light source module 200 lights up when the light beam emitted by the light source system is in the G segment and the Y segment, and is turned off in other color periods; the second light source 102 lights up when the current is in the R segment and the Y segment, and is turned off in other color periods.

[0121] The filter assembly control unit 600 controls the working state of the filter assembly 300 , the first filter element 108 of the filter assembly 300 is in the first working state, and the second filter element 112 of the filter assembly 300 is in the first working state.

[0122] In this mode, the color gamut area of ​​the light beam emitted by the light source system is 1.52sRGB, and the brightness is above 6000lm. In the next mode, the light source system has a REC.2020 color gamut.

[0123] See also Figure 3 and Fig.12 , Fig.12 It is a schematic diagram of the current driving the light source when the light source system is in mode 2 and mode 3 in one embodiment of the present application.

[0124] The horizontal axes B, R, G, and Y represent the time intervals occupied by the blue, red, green, and yellow color fields, and the vertical axes represent the current values ​​corresponding to the first light source 101 , the second light source 102 , the first laser light source 201 , the second laser light source 203 , and the third laser light source 205 .

[0125] When the light source system of the present embodiment is in mode 2, the primary light source control unit 400 controls the primary light source module 100, so that the first laser light source 201 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment B, and is turned off in other color time periods; the second laser light source 203 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods; the third laser light source 205 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods.

[0126] The color gamut adjustment light source module control unit 500 controls the color gamut adjustment light source module 200, and the first light source 101 of the color gamut adjustment light source module 200 lights up when the light beam emitted by the light source system is in the R segment, G segment, and Y segment, and is turned off in other color time periods, wherein the current of the first light source 101 when the light beam emitted by the light source system is in the R segment is less than the current of the first light source 101 when the light beam emitted by the light source system is in the G segment and the Y segment; the second light source 102 lights up when the current is in the R segment, G segment, and Y segment, and is turned off in other color time periods, wherein the current of the second light source 102 when the light beam emitted by the light source system is in the G segment is less than the current of the second light source 102 when the light beam emitted by the light source system is in the R segment and the Y segment.

[0127] The filter assembly control unit 600 controls the working state of the filter assembly 300 , the first filter element 108 of the filter assembly 300 is in the first working state, and the second filter element 112 of the filter assembly 300 is in the first working state.

[0128] In this mode, the color gamut area of ​​the light source system is 1.15sRGB, and the brightness is above 6800lm. In mode two, the light source system has a DCI color gamut.

[0129] When the light source system of the present embodiment is in mode three, the primary light source control unit 400 controls the primary light source module 100, so that the first laser light source 201 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment B, and is turned off in other color time periods; the second laser light source 203 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods; the third laser light source 205 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods.

[0130] The color gamut adjustment light source module control unit 500 controls the color gamut adjustment light source module 200, and the first light source 101 of the color gamut adjustment light source module 200 lights up when the light beam emitted by the light source system is in the R segment, G segment, and Y segment, and is turned off in other color time periods, wherein the current of the first light source 101 when the light beam emitted by the light source system is in the R segment is less than the current of the first light source 101 when the light beam emitted by the light source system is in the G segment and the Y segment; the second light source 102 lights up when the current is in the R segment, G segment, and Y segment, and is turned off in other color time periods, wherein the current of the second light source 102 when the light beam emitted by the light source system is in the G segment is less than the current of the second light source 102 when the light beam emitted by the light source system is in the R segment and the Y segment.

[0131] The filter assembly control unit 600 controls the working state of the filter assembly 300 , the first filter element 108 of the filter assembly 300 is in the second working state, and the second filter element 112 of the filter assembly 300 is in the second working state.

[0132] In this mode, the color gamut area of ​​the light source system is 1.15sRGB, which is the DCI color gamut. The brightness is 7300lm, which is about 7% higher than that of mode 2.

[0133] See also Figure 3 and Fig.13 , Fig.13 It is a schematic diagram of the current driving the light source when the light source system is in mode 4 and mode 5 in one embodiment of the present application.

[0134] The horizontal axes B, R, G, and Y represent the time intervals occupied by the blue, red, green, and yellow color fields, and the vertical axes represent the current values ​​corresponding to the first light source 101 , the second light source 102 , the first laser light source 201 , the second laser light source 203 , and the third laser light source 205 .

[0135] When the light source system of the present embodiment is in mode four, the primary light source control unit 400 controls the primary light source module 100, so that the first laser light source 201 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment B, and is turned off in other color time periods; the second laser light source 203 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods; the third laser light source 205 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods.

[0136] The color gamut adjustment light source module control unit 500 controls the color gamut adjustment light source module 200. The first light source 101 of the color gamut adjustment light source module 200 lights up when the light beam emitted by the light source system is in the R segment, G segment, and Y segment, and turns off in other color periods, wherein the current of the first light source 101 when the light beam emitted by the light source system is in the R segment is less than the current of the first light source 101 when the light beam emitted by the light source system is in the G segment and Y segment; the second light source 102 lights up when the light beam emitted by the light source system is in the R segment, G segment, and Y segment, and turns off in other color periods, wherein the current of the second light source 102 when the light beam emitted by the light source system is in the G segment is less than the current of the second light source 102 when the light beam emitted by the light source system is in the R segment and Y segment. In this mode, the current of the first light source 101 when the light beam emitted by the light source system is in the R segment is greater than the current of the first light source 101 when the light beam emitted by the light source system is in the R segment in mode 2.

[0137] The filter assembly control unit 600 controls the working state of the filter assembly 300 , the first filter element 108 of the filter assembly 300 is in the first working state, and the second filter element 112 of the filter assembly 300 is in the first working state.

[0138] In this mode, the light source system has a color gamut of 1sRGB and a brightness of about 7000lm. In mode four, the light source system has a REC.709 color gamut.

[0139] When the light source system of the present embodiment is in mode five, the primary light source control unit 400 controls the primary light source module 100, so that the first laser light source 201 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment B, and is turned off in other color time periods; the second laser light source 203 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods; the third laser light source 205 in the primary light source module 100 lights up when the light beam emitted by the light source system is in segment R, and is turned off in other color time periods.

[0140] The color gamut adjustment light source module control unit 500 controls the color gamut adjustment light source module 200. The first light source 101 of the color gamut adjustment light source module 200 lights up when the light beam emitted by the light source system is in the R segment, G segment, and Y segment, and turns off in other color periods, wherein the current of the first light source 101 when the light beam emitted by the light source system is in the R segment is less than the current of the first light source 101 when the light beam emitted by the light source system is in the G segment and Y segment; the second light source 102 lights up when the light beam emitted by the light source system is in the R segment, G segment, and Y segment, and turns off in other color periods, wherein the current of the second light source 102 when the light beam emitted by the light source system is in the G segment is less than the current of the second light source 102 when the light beam emitted by the light source system is in the R segment and Y segment. In this mode, the current of the first light source 101 when the light beam emitted by the light source system is in the R segment is greater than the current of the first light source 101 when the light beam emitted by the light source system is in the R segment in mode 2.

[0141] The filter assembly control unit 600 controls the working state of the filter assembly 300 , the first filter element 108 of the filter assembly 300 is in the second working state, and the second filter element 112 of the filter assembly 300 is in the second working state.

[0142] In this mode, the color gamut of the light source system is 1sRGB, which is the REC.709 color gamut. The brightness is 7700lm, which is about 10% higher than the brightness of mode 4.

[0143] Therefore, in the light source system of this embodiment, the current size and / or duty cycle of the primary light source 100 is regulated by the primary light source control unit 400, the current size and / or duty cycle of the color gamut adjustment light source module 200 is regulated by the color gamut adjustment light source module control unit 500, and the color gamut and brightness of the light source system are modulated by adjusting the working mode of the filter component 300 by the filter component 600 control unit, so that the light source system has a wider color gamut and higher brightness. The modes of the light source system are not limited to the above modes, and those skilled in the art can obtain more modes based on this application.

[0144] In summary, the present application provides a light source system and a projection optical machine embodiment. The light source system uses a primary color light source module and a color gamut adjustment light source module to expand and combine light, and is controlled by a primary color light source control unit, a color gamut adjustment light source module control unit, and a filter component control unit, so that the light source system under the present application has high brightness, a wide color gamut, and high color brightness. At the same time, the color gamut and brightness of the light source system can be dynamically adjusted based on the usage scenario by adjusting the laser current, duty cycle, filter element state, etc., with high flexibility and wide applicability.

[0145] 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. A light source system, characterized in that: include: A primary color light source module, used for emitting projection primary color light; A color gamut adjustment light source module, used for emitting color gamut adjustment light; A filter component having a first working state arranged on the light output path of the color gamut adjustment light source module and a second working state arranged outside the light output path of the color gamut adjustment light source module, wherein the first working state and the second working state are switchable; A primary color light source control unit, used to adjust the current magnitude and / or duty cycle of the primary color light source according to predetermined requirements; A color gamut adjustment light source module control unit, used to adjust the current size and / or duty cycle of the color gamut adjustment light source module based on the control logic of the primary color light source control unit or a predetermined requirement; The filter component control unit is used to control the filter component to switch between the first working state and the second working state according to a predetermined requirement.

2. The light source system according to claim 1, characterized in that: The color gamut adjustment light source module comprises: An excitation light source, used for emitting excitation light; A color wheel device, the color wheel device comprising a first monochromatic wavelength conversion wheel and a second monochromatic wavelength conversion wheel, the first monochromatic wavelength conversion wheel is used to be excited by the excitation light to generate a first light beam, and the second monochromatic wavelength conversion wheel is used to be excited by the excitation light to generate a second light beam; a light splitting and combining device, the light splitting and combining device being located on the exit light paths of the excitation light source, the first monochromatic wavelength conversion wheel and the second monochromatic wavelength conversion wheel, and being used to make the excitation light emitted by the excitation light source incident on the first monochromatic wavelength conversion wheel and the second monochromatic wavelength conversion wheel respectively, and to make the first light beam and the second light beam exit along the same light path; The filter assembly has a first working state in which it is arranged on the light output paths of the first and second monochromatic wavelength conversion wheels, and a second working state in which it is arranged outside the light output paths of the first and second monochromatic wavelength conversion wheels.

3. The light source system according to claim 2, characterized in that: The light source system further includes a light combining device, which is disposed on the light splitting and combining device and the outgoing light path of the primary light source, and the primary light is combined with the first light beam and the second light beam via the light combining device.

4. The light source system according to claim 2, characterized in that: The light splitting and combining device includes a first area and a second area. Part of the excitation light is transmitted through the first area and then incident on the first monochromatic wavelength conversion wheel; part of the excitation light is reflected through the second area and then incident on the second monochromatic wavelength conversion wheel.

5. The light source system according to claim 2, characterized in that: The filter assembly includes a first filter element. When the first filter element is in a first working state, it is arranged between the first monochromatic wavelength conversion wheel and the light splitting and combining device. The first light beam emitted by the first monochromatic wavelength conversion wheel is filtered by the first filter element and then incident on the light splitting and combining device.

6. The light source system according to any one of claims 2 or 5, characterized in that: The filter assembly includes a second filter element. When the second filter element is in a first working state, it is arranged between the second monochromatic wavelength conversion wheel and the light splitting and combining device. The second light beam emitted by the second monochromatic wavelength conversion wheel is incident on the light splitting and combining device after passing through the second filter element.

7. The light source system according to claim 3, characterized in that: The light source system further includes a first light homogenizer, which is disposed between the light splitting and combining device and the light combining device and is used to homogenize the first light beam and the second light beam.

8. The light source system according to claim 3, characterized in that: The light combining device includes a central area and an edge area. The primary color light is incident on the central area. The central area is used to reflect the primary color light, and the edge area is used to transmit the first light beam and the second light beam.

9. The light source system according to claim 2, characterized in that: The excitation light is blue light, and the primary color light source includes a blue light source.

10. A projection optical machine, characterized in that: include: The light source system as claimed in claims 1 to 9, wherein the light source system is used to output projection light for the light modulator; The light modulator is configured to modulate the projection light of the light source system to generate image light.

Images