WO2019200930A1

WO2019200930A1 - Light source apparatus and display device

Info

Publication number: WO2019200930A1
Application number: PCT/CN2018/118813
Authority: WO
Inventors: 杨炳柯; 郭祖强; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2018-04-17
Filing date: 2018-12-03
Publication date: 2019-10-24
Also published as: CN110389487A

Abstract

A light source apparatus (100), comprising an excitation light source (101), a first color wheel (106), a second color wheel (107), and a first masking film (106-2). The first color wheel (106) comprises a first wavelength conversion region (106-1); the second color wheel (107) comprises a second wavelength conversion region (107-2) and an optical processing region (107-3); the excitation light source (101) is used for emitting excitation light; the first wavelength conversion region (106-1) is used for receiving the excitation light and performing wavelength conversion to generate first light; the second wavelength conversion region (107-2) is used for receiving the excitation light and performing wavelength conversion to generate second light. The first masking film (106-2) is located between the first color wheel (106) and the second color wheel (107), or on the first color wheel (106). The first masking film (106-2) corresponds to the second wavelength conversion region (107-2) and is used for receiving the second light emitted by the wavelength conversion region (107-2) and filtering out a part of the second light, thereby achieving masking on the second light. The optical processing region (107-3) is further used for receiving the excitation light and emitting third light. The first light, the masked second light, and the third light are guided on an optical channel.

Description

Light source device and display device

Technical field

The present invention relates to the field of illumination and display technologies, and in particular, to a light source device and a display device.

Background technique

At present, laser light sources are becoming more and more widely used in display (such as projection field) and illumination. Due to the high energy density and small optical expansion, laser light sources have gradually replaced bulbs and LEDs in the field of high-brightness light sources. light source.

In the current projection display technology, a scheme of RGB three primary color light sources using a laser light source + a fluorescent wheel (color wheel) is widely used. However, when the laser excites the fluorescent material disposed on the rotating color wheel to generate fluorescence, the fluorescent material is stimulated to generate fluorescence on the one hand, and a certain power loss is generated on the other hand, and the power loss causes the temperature of the fluorescent material to rise. The conversion efficiency of fluorescent materials decreases with increasing temperature. Therefore, the heat dissipation problem of this solution needs to be considered. In addition, since the fluorescence generated by the phosphor may be insufficient in color, it is difficult to achieve the current color gamut standard, and further consideration is needed. The color correction wheel corresponding to the color wheel section is set to improve the fluorescent color, but the synchronous control of the color wheel and the color wheel is also a problem. How to balance the color wheel heat dissipation and its synchronous control is an important topic in the design of the light source structure of the existing laser light source + color wheel.

Summary of the invention

In view of the above technical problems, it is necessary to provide a light source device that can improve the problem of color wheel heat dissipation and synchronous control, and a display device using the above light source device.

A light source device comprising an excitation light source, two color wheels arranged in sequence on an optical path of the excitation light emitted by the excitation light source, and a first color correction film, wherein the two color wheels comprise a first color wheel, a second color wheel, the first color wheel includes a first wavelength conversion region, the second color wheel includes a second wavelength conversion region and a light processing region, and the excitation light source is configured to emit excitation light, the first wavelength a conversion area for receiving the excitation light and performing wavelength conversion to generate first light, the second wavelength conversion area for receiving the excitation light and performing wavelength conversion to generate second light, wherein the first color correction sheet is located at the Between the first color wheel and the second color wheel or on the first color wheel, the first color correction piece corresponds to the second wavelength conversion area and is configured to receive the second wavelength conversion area The second light and filtering out a portion of the second light to color the second light, the light processing region is further configured to receive the excitation light and emit a third light, A light, the second color after the color correction, and the third light are guided to the light exit channel.

A display device comprising a light source device, the light source device comprising an excitation light source, two color wheels arranged in sequence on an optical path of the excitation light emitted by the excitation light source, and a first color correction sheet, the two The color wheel includes a first color wheel including a first wavelength conversion region, the second color wheel includes a second wavelength conversion region and a light processing region, and the excitation light source is used to emit Excitation light, the first wavelength conversion region is configured to receive the excitation light and perform wavelength conversion to generate first light, and the second wavelength conversion region is configured to receive the excitation light and perform wavelength conversion to generate a second light. The first color correction sheet is located between the first color wheel and the second color wheel or on the first color wheel, and the first color correction piece corresponds to the second wavelength conversion area and is used for receiving The second light emitted by the second wavelength conversion region filters out a portion of the second light to perform color correction on the second light, and the light processing region is further configured to receive the excitation light and Transmitting a third light, the first light, the second light after the color correction The third light is guided to the light path.

Compared with the prior art, in the light source device and the display device of the present invention, the light source device is provided with two color wheels, and the two color wheels are sequentially located on the optical path of the excitation light and have wavelength conversion regions respectively for wavelength The light source device has a better heat dissipation effect, and the light source device further includes the first color correction sheet, the first color correction sheet Corresponding to the second wavelength conversion region and for receiving the second light emitted by the second wavelength conversion region and filtering out a portion of the second light to perform color correction on the second light, The first color correction sheet not only filters the color of the second light generated by the second color wheel to achieve the color gamut requirement, but also because the first color correction sheet is located at the first color wheel and The second color wheel is located on or on the first color wheel, so that there is no need to consider the problem of synchronous control of the color correction device and the two color wheels, and the synchronization control of the light source device is less difficult.

DRAWINGS

1 is a schematic illustration of the optical path of a laser fluorescent light source that can be used in a monolithic spatial light modulator.

FIG. 2 is a schematic diagram of another light source scheme using an excitation light source + a two-color wheel to emit RGB three-color light.

3 is a schematic structural view of a light source device according to a first embodiment of the present invention.

4 is a schematic structural view of the first color wheel shown in FIG. 3.

FIG. 5 is a schematic structural view of the second color wheel shown in FIG. 3. FIG.

Fig. 6 is a schematic structural view of a light source device according to a second embodiment of the present invention.

Fig. 7 is a schematic structural view of the first color wheel shown in Fig. 6.

Figure 8 is a schematic view showing the structure of the second color wheel shown in Figure 6.

Fig. 9 is a schematic structural view of a light source device according to a third embodiment of the present invention.

Fig. 10 is a schematic structural view of a light source device according to a fourth embodiment of the present invention.

Fig. 11 is a view showing the configuration of a light source device according to a fifth embodiment of the present invention.

Figure 12 is a schematic view showing the structure of the first color wheel shown in Figure 11;

Figure 13 is a schematic view showing the structure of the second color wheel shown in Figure 11;

Fig. 14 is a schematic structural view of a light source device according to a sixth embodiment of the present invention.

Main component symbol description

Light source device

100, 200, 300, 400, 500, 600

Excitation source

101, 201, 301, 401, 601

First color wheel

106, 206, 306, 406, 506, 606

Second color wheel

107, 207, 307, 407, 507, 607

First color correction film 106-2, 206-2, 412, 506-2

Beam

splitter

104, 204, 304, 404, 504

Guide elements

109, 110, 209, 210, 313, 309, 409, 410, 609,

610

Light combining elements

111, 211, 315, 411, 611

Relay lens system

102, 202, 302, 402, 602

Homogenizing device

103, 203, 303, 403, 603

First wavelength conversion region 106-1, 206-1, 506-1

Second wavelength conversion region 107-2, 207-2, 507-2

Light processing area 107-3, 207-3, 507-3

Cooling zone 107-1, 207-1, 507-1

Lens systems

105, 108, 205, 208, 305, 308, 405, 408, 605,

608

Second color repair area 207-1

Supplementary light source 310

First supplemental light source 310a

Second supplementary light source 310b

First area 313a

Second area 313b

Transmission area 406-2

Third wavelength conversion region 507-4

Connecting shaft 612

The invention will be further illustrated by the following detailed description in conjunction with the accompanying drawings.

detailed description

As described in the background art, the conventional laser + fluorescent light source generally has a fluorescent wheel (color wheel) for receiving fluorescence and a color correction wheel, and the latter is used for filtering fluorescence to make the color satisfy the existing one. The color gamut standard, generally the two devices are distinguished in the light source.

For the heat dissipation problem of the fluorescent wheel, it is generally required to maintain the fluorescent material at a stable operating temperature by means of a heat sink. In the prior art, a heat dissipation structure such as a fin is disposed on one surface of the color wheel or other areas, but as the brightness of the projection device is further improved, the heat dissipation capability needs to be increased to increase the size of the color wheel. A larger area is provided for heat dissipation, which results in an increase in the overall size of the light source as well as the projection system. Based on the above problems of heat dissipation and size, it is conceivable to provide two small color wheel devices for exciting different colors of fluorescence to achieve average heat.

Further, for the problem that the fluorescent color produced by the phosphor is insufficient to meet the current color gamut standard, it is conceivable to provide a color correction device to improve the fluorescent color. Specifically, a color correction sheet may be disposed at an exit of the light source device as a color correction device, and particularly for a system of a single spatial light modulator, a segmented color correction wheel independent of the fluorescent color wheel may be disposed, each segment The color correction patches respectively correspond to the corresponding fluorescent segments of the color wheel, and are used for filtering the fluorescence so that the color of the light source emitted by the light source device satisfies the existing color gamut standard.

Specifically, please refer to FIG. 1. FIG. 1 is a schematic diagram of an optical path of a laser fluorescent light source that can be used in a monolithic spatial light modulator. In this configuration, after the fluorescence is generated from the color wheel, it is collected by the lens system group, and then reflected by the blue-and-yellow color separation sheet into the square rod and conducted into the optical machine (not shown). Between the color separation sheet and the square rod, a color correction wheel is provided to improve the color of the fluorescent light, but the color wheel generated by the solution has a high heat and has a certain heat dissipation difficulty.

Further, please refer to FIG. 2. FIG. 2 is a schematic diagram of another light source scheme for emitting RGB (red, green, and blue) three-color light by using an excitation light source and a two-color wheel. In this scheme, two small color wheels are used (eg, The color wheel 1 and the color wheel 2) shown in FIG. 2 share the heat generated by the excitation fluorescence, but after further adding the color correction device (such as the color wheel), it is necessary to control the three wheels synchronously, and the control thereof is controlled. It is more difficult.

In view of the above problems, the present invention further proposes a light source device which can improve the problem of color wheel heat dissipation and synchronous control. Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a light source device 100 according to a first embodiment of the present invention. The light source device 100 includes an excitation light source 101, two

color wheels

106 and 107 disposed on the optical path of the excitation light emitted by the excitation light source 101, a first color correction sheet 106-2, a beam splitter 104, and a guide.

Elements

109 and 110, light combining element 111, relay lens system 102, light homogenizing device 103, and

lens systems

105, 108.

The excitation light source 101 is for emitting excitation light, and the excitation light may be a laser. The excitation light source 101 may include one laser, two lasers or multiple lasers. In the embodiment, the excitation light source 101 includes a plurality of lasers, and the plurality of lasers may constitute a laser array. Each laser can be a semiconductor laser diode. Further, the excitation light may be blue excitation light or ultraviolet excitation light. In the embodiment, the excitation light is mainly blue excitation light (that is, the excitation light source is a blue laser light source). .

The relay lens system 102 and the light homogenizing device 103 are sequentially located on the optical path of the excitation light emitted by the excitation light source. The relay lens system 102 is configured to collect and collimate excitation light emitted by the excitation light source, and the light homogenizing device 103 is configured to perform uniform light emission of the excitation light emitted by the relay lens system. The relay lens system 102 can include one, two or more relay lenses. The light homogenizing device 103 may be a fly-eye lens or a light-diffusing square bar or the like. It can be understood that in the modified embodiment, the relay lens system 102 and the light homogenizing device 103 may also be omitted.

The two color wheels include a first color wheel 106 and a second color wheel 107, wherein the central axes of the two

color wheels

106 and 107 are on the same line, and the first color wheel 106 and the The second color wheel 107 rotates in synchronization. Specifically, the first color wheel 106 and the second color wheel 107 may be disposed to be driven by the same motor/motor such that the first color wheel 106 and the second color wheel can be simultaneously driven while the motor is moving. 107 synchronous rotation; or two motors/motors can be separately driven for the second color wheel 106 and the second color wheel 107, while the two motors/motors are set to the same direction of motion and the rotational speed, thereby The first color wheel 106 and the second color wheel 107 enable synchronous rotation. Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of the first color wheel 106 shown in FIG. The first color wheel 106 includes a first wavelength conversion area 106-1. In the embodiment, the first color correction piece 106-2 is a first color correction area located on the first color wheel. The first wavelength conversion region 106-1 and the first color correction sheet 106-2 form an annular region, and the first wavelength conversion region 106-1 and the first color correction sheet 106-2 respectively have a circular region A part of the section, it can be understood that in the modified embodiment, the first wavelength conversion region 106-1 and the first color correction sheet 106-2 may have a spacing region, or other wavelength conversion, filtering, etc. region.

Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of the second color wheel 107 shown in FIG. The second color wheel 107 includes a second wavelength conversion area 107-2, a light processing area 107-3, and a heat dissipation area 107-1. The second wavelength conversion region 107-2, the light processing region 107-3, and the heat dissipation region 107-1 constitute a circular ring region, and the second wavelength conversion region 107-2, the light processing region 107-3, and the heat dissipation region 107 -1, respectively, a portion of the ring region, it may be understood that in the modified embodiment, the second wavelength conversion region 107-2, the light processing region 107-3, and the heat dissipation region 107-1 may have a spacing region, Or other wavelength conversion, filtering and other areas.

The first wavelength conversion region 106-1 is configured to receive the excitation light and perform wavelength conversion to generate the first light. It can be understood that the first wavelength conversion region 106-1 may be provided with a first wavelength conversion material, such as In the present embodiment, the green fluorescent material, the red fluorescent material, the yellow fluorescent material, or the like is mainly exemplified by the first wavelength converting material being a green fluorescent material. Further, the first wavelength conversion region 106-1 is also a reflective region for receiving the excitation light and reflecting the generated first light.

The second wavelength conversion region 107-2 is configured to receive the excitation light and perform wavelength conversion to generate a second light. It can be understood that the second wavelength conversion region 107-2 can be provided with a second wavelength conversion material, such as green. a fluorescent material, a red fluorescent material, or a yellow fluorescent material, etc., the second wavelength converting material may be different from the first wavelength converting material. In the embodiment, the second wavelength converting material is mainly a red fluorescent material. Illustratively, the second light is red light, but it can be understood that, in a modified embodiment, when the first wavelength converting material is a red fluorescent material, the second wavelength converting material may be a green fluorescent material. Further, in the embodiment, the second wavelength conversion region 107-2 is also a reflective region for receiving the excitation light and reflecting the generated second light.

The light processing area 107-3 is further configured to receive the excitation light and emit a third light. In the embodiment, the light processing area 107-3 is a scattering area, and a scattering material is disposed thereon for receiving the light. The excitation light is emitted and the scattered excitation light is emitted as the third light. It can be understood that the third light can be blue light, such as blue laser light. Further, in the present embodiment, the light processing region 107-3 is a transmissive scattering region, that is, the excitation light is transmitted through the light processing region 107-3 and is scattered.

The position of the heat dissipation area 107-1 corresponds to the first wavelength conversion area 106-1, and the heat dissipation area may be a metal material, or may be provided with a heat dissipation structure such as a scattering fin for the second color wheel. The generated heat on 107 is dissipated to avoid adverse effects of the second wavelength converting material of the second wavelength conversion region 107-2 being heated.

In this embodiment, the first color correction sheet 106-2 is located on the first color wheel 106, and the first color correction sheet 106-2 corresponds to the second wavelength conversion area 107-2 and the light processing area. 107-3, the first color correction sheet 106-2 receives the excitation light emitted by the excitation light source 101 via the beam splitter 104, the light homogenizing device 103, and the relay lens system 102, and receives the excitation light. The excitation light is guided (eg, transmitted) to the second wavelength conversion region 107-2 and the light processing region 107-3 of the second color wheel 107 such that the second wavelength conversion region 107-2 and the light processing The region 107-3 receives the excitation light. The first color correction sheet 106-2 is further configured to receive the second light emitted by the second wavelength conversion region 107-2 and filter out a portion of the second light to perform the second light Repair color. Specifically, the first color correction sheet 106-2 may filter out a portion of the second light having a shorter wavelength, such as the second light being red light, and the first color correction sheet may filter out a part of the shorter wavelength. Red light (such as partial yellow light or orange light), after being trimmed by the first color correction sheet 106-2, the second light can satisfy a specific color gamut standard.

The beam splitter 104 is located between the excitation light source 101 and the first color wheel 106. The beam splitter 104 receives the excitation light emitted by the excitation light source 101 via the light homogenizing device 103 and the relay lens system 102. And providing the excitation light to the first color wheel 106. In the embodiment, the first wavelength conversion region 106-1 further emits the first light to the beam splitter 104, the first The color-changing sheet 106-2 also emits the trimmed second light to the beam splitter 104. Specifically, the beam splitter 104 is further configured to guide the first light and the trimmed second light to the light exit channel via the first light path, and the light processing area 107-3 faces away from the first The direction of the color wheel 106 emits the third light, and the third light is directed to the light exit channel via a second optical path different from the first light path. Specifically, the beam splitter 104 may be a color separation sheet that transmits excitation light and reflects the first light and the second light, such as a color separation sheet that is blue-transverse yellow (ie, blue-transparent and anti-red). .

Further, the

lens systems

105, 108 are respectively located between the beam splitter 104 and the first color wheel 106, between the first color wheel 106 and the second color wheel 107, and the second The light processing zone 107-3 of the color wheel 107 is remote from the side of the first color wheel 106 and is used to collect and collimate light. Specifically, the lens system 105 may be a lens group formed by at least two lenses, and the lens system 108 may be a piece of relay lens. It will be appreciated that in a variant embodiment, the

lens systems

105, 108 may also be omitted.

The guiding

elements

109, 110 are configured to guide the first light and the second light emitted by the beam splitter 104 and/or the third light emitted by the light processing area 107-3 to the combined light The element 111 is configured to combine the received first light, the second modified light, and the third light. Specifically, the guiding component 110 and the light combining component 111 are located in the first optical path for guiding the first light and the second light to the light exiting channel. The guiding element 109 and the light combining element 111 are located in the second optical path for guiding the third light to the light exiting channel. Specifically, in this embodiment, the guiding element 110 may reflect a mirror of the first light and the second light, such as a yellow light mirror (ie, a mirror that reflects red light and green light), The guiding element 109 can be a mirror that reflects the third light, such as a blue mirror. The light combining element 111 may be a dichroic color film, such as a dichroic color plate that is yellowish and anti-blue.

When the light source device 100 is in operation, the first color wheel 106 and the second color wheel 107 are each rotated about its axis, and the first color wheel 106 and the second color wheel 107 rotate synchronously, wherein The first wavelength conversion area 106-1 corresponds to the heat dissipation area 107-1, and the first color correction sheet 106-2 corresponds to the second wavelength conversion area 107-2 and the light processing area 107-3. . The excitation light of the blue laser light emitted by the excitation light source 101 is collimated and homogenized by the relay lens system 102 to reach the beam splitter 104, and the beam splitter 104 The excitation light is further transmitted to the first color wheel 106; the first wavelength conversion region 106-1 of the first color wheel 106 converts the received excitation light into green fluorescence, and the green fluorescence serves as the first Light is reflected to the beam splitter 104, the beam splitter 104 reflects the first light to the guiding element 110, and the guiding element 110 further reflects the first light to the light combining element 111 The light combining element 111 transmits the first light to the light exiting passage; meanwhile, the first color modifying piece 106-2 of the first color wheel 106 transmits the received excitation light to the second light. Color wheel 107. The second wavelength conversion region 107-2 of the second color wheel 107 converts the received excitation light into red fluorescence as the second light and is reflected to the first color correction sheet 106- 2, the first color correction sheet 106-2 transmits and filters a portion of the second light and supplies the filtered second light to the beam splitter 104, the beam splitter 104 will The second light is reflected to the guiding element 110, the guiding element 110 further reflecting the filtered second light to the light combining element 111, the light combining element 111 transmitting the second light to The light-emitting channel 107-3 of the second color wheel 107 receives and emits excitation light, the scattered and transmitted excitation light and the red fluorescence and the green fluorescence The optical expansion amount is equivalent, the scattered and transmitted excitation light is supplied as the third light to the guiding element 109, and the guiding element 109 reflects the third light to the light combining element 111. The light combining element 111 reflects the third light to the light exiting channel. The first light, the second light, and the third light are combined in the light exit passage through the light combining element 111, thereby forming light source light of the light source device 100, such as white light.

Compared with the prior art, in the light source device 100 of the present invention, the light source device 100 is provided with two

color wheels

106, 107, which are sequentially located on the optical path of the excitation light and have respectively The wavelength conversion regions 106-1, 107-2 perform wavelength conversion, that is, the heat dissipation is enhanced by the two color wheels 106-107, so that the light source device 100 has a better heat dissipation effect, and is compared with that shown in FIG. The light source device 100 has substantially no change in size (such as thickness); further, the light source device 100 further includes the first color correction sheet 106-2, and the first color correction sheet 106-2 Corresponding to the second wavelength conversion 107-2 region and for receiving the second light emitted by the second wavelength conversion region 107-2 and filtering out a portion of the second light to the second light Performing color correction, the first color correction sheet 106-2 not only filters and modifies the second light generated by the second color wheel 107 to achieve the color gamut requirement, but also because of the first color correction sheet. 106-2 is located on the first color wheel 106, so that synchronization of the color modifying device with the two

color wheels

106, 107 need not be considered System problems, lower the difficulty of synchronizing the control of the light source apparatus 100.

Further, in the embodiment, the second light (ie, red fluorescence) is mainly repaired by the first color correction sheet 106-2, and the first light (ie, green fluorescence) is not repaired. One of the reasons is that among the existing green fluorescent materials, the green fluorescent light generated by the green fluorescent material can satisfy the standard color gamut (such as Rec. 709). Therefore, when the second light can satisfy the color gamut standard, Do not modify the color.

Please refer to FIG. 6, FIG. 7, and FIG. 8. FIG. 6 is a schematic structural diagram of a light source device 200 according to a second embodiment of the present invention, FIG. 7 is a schematic structural view of the first color wheel 206 shown in FIG. 6, and FIG. A schematic structural view of the second color wheel 207 is shown. The light source device 200 is substantially the same as the light source device 100 of the first embodiment, that is, the above description of the light source device 100 of the first embodiment can be basically applied to the light source device 200 of the second embodiment. The difference between the two is mainly that the second color wheel 207 includes a second color correction area 207-1, and the second color correction area 207-1 corresponds to the first wavelength conversion area 206-1 and is configured to receive the The first light emitted by the first wavelength conversion region 206-1 and filtering out a portion of the first light to color the first light, the first light after the color correction is guided to the light output aisle. Specifically, compared with the first embodiment, the second color correction area 207-1 may be located at a position where the heat dissipation area 107-1 of the first embodiment is located, thereby replacing the heat dissipation area 107-1.

In the second embodiment, the first wavelength conversion region 206-1 and the second color modification region 207-1 are both transmission regions, and the light transmissive elements 111 have different transflective properties for the first light. (In the present embodiment, the light combining element 111 is for reflecting the received first light), and therefore the optical path principle of the light source device 200 is different from that in the first embodiment.

Specifically, when the light source device 200 is in operation, the first color wheel 206 and the second color wheel 207 are each rotated about their axes, and the first color wheel 206 and the second color wheel 207 Synchronous rotation, wherein the first wavelength conversion region 206-1 corresponds to the second color correction region 207-1, and the first color correction sheet 206-2 corresponds to the second wavelength conversion region 207-2 and the light processing region. 207-3. Excitation light of the blue laser light emitted from the excitation light source 201 is collimated and homogenized by the relay lens system 202 to reach the beam splitter 204, and the beam splitter 204 will excite the light. The light is further transmitted to the first color wheel 206; the first wavelength conversion region 206-1 of the first color wheel 206 converts the received excitation light into green fluorescence, and the green fluorescence is used as the first light Transmitted to the second color correction area 207-1, the second color correction area 207-1 transmits the trimmed first light to the guiding element 209, the guiding element 206 will be the first The light is further reflected to the light combining element 211, and the light combining element 211 reflects the first light to the light exiting channel; meanwhile, the first color correcting piece 206-2 of the first color wheel 206 will receive Excitation light is transmitted to the second color wheel 207. The second wavelength conversion region 207-2 of the second color wheel 207 converts the received excitation light into red fluorescence as the second light and is reflected to the first color correction sheet 206- 2, the first color correction sheet 206-2 transmits and filters a portion of the second light and supplies the filtered second light to the beam splitter 204, the beam splitter 204 will The first light is reflected to the guiding element 210, the guiding element 210 further reflecting the filtered second light to the light combining element 211, and the light combining element 211 transmits the second light to The light-emitting channel 207-3 of the second color wheel 207 receives and emits excitation light, the scattered and transmitted excitation light and the red fluorescence and the green fluorescence The optical expansion amount is equivalent, the scattered and transmitted excitation light is supplied as the third light to the guiding element 209, and the guiding element 209 reflects the third light to the light combining element 211. The light combining component 211 reflects the third light to the light exiting channel. The first light, the second light, and the third light are combined in the light exit passage through the light combining element 211 to form light source light of the light source device 200, such as white light.

In the second embodiment, the first light is further color-filtered by the second color correction area 207-1, so that the second light of the light source light emitted by the light source device 200 can satisfy the High color gamut standard. However, it should be noted that, in the second embodiment, since the first wavelength conversion region 206-1 is a transmission region, it is compared with the reflective first wavelength conversion region 106-1 of the first embodiment. In this case, the fluorescence conversion efficiency will be slightly reduced. In addition, the

lens systems

205, 208 in the third embodiment may be respectively associated with the

lens systems

105, 108 in the first embodiment, and will not be described herein.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of a light source device 300 according to a third embodiment of the present invention. The light source device 300 is substantially the same as the light source device 100 of the first embodiment, that is, the above description of the light source device 100 of the first embodiment can be basically applied to the light source device 300 of the third embodiment. The difference between the two is mainly that the light source device 300 further includes a supplemental light source 310 corresponding to the 313 guiding component, and the supplemental light source 310 is configured to emit the first supplemental light and/or the second supplemental light. Broadening the color gamut of the light source device 300, the first supplemental light and/or the second supplemental light being directed to the light combining element 315 via the guiding element 313, the light combining component 315 to the first supplement Light and/or the second supplemental light is directed to the light exit channel, wherein the first supplemental light is the same color as the first light, and the second supplemental light is the same color as the second light, specifically The supplemental light source 310 may include a laser, and the first supplemental light and/or the second supplemental light may include a laser, wherein the first supplemental light may be a green laser, and the second supplemental light may be a red laser. Thereby said The supplemental light source 310 may include a first supplemental light source 310a that emits a green laser light and a second supplemental light source 310b that emits a red laser. The guiding element 313 may transmit the first supplemental light and/or the second supplemental light to the light combining component 315, and the light combining component 315 may further add the first supplemental light and/or the second supplement Light is transmitted to the light exit channel. Specifically, the guiding element 313 may have a first area 313a and a second area 313b, the second area 313b may be located at a periphery of the first area 313a, and the second area 313b may The second light is reflected to the light combining element 315, and the first region 313a may transmit the first supplemental light and/or the second supplemental light to the light combining element 315.

Further, in the embodiment, the light source device 300 further includes a scattering and dissipating device 311 and a collecting lens 312, and the first supplemental light and/or the second supplemental light emitted by the supplemental light source 311 are A scattering and de-spotting device 311 and a collecting lens 312 are provided to the guiding member 313.

It can be understood that, in a modified embodiment, the first supplemental light and/or the second supplemental light may also be disposed corresponding to the beam splitter 304 or the guiding component 309, thereby passing through the beam splitter 304 and the a guiding element 309 or the guiding element is guided to the light combining element 315, the light combining element 315 reflecting the first supplemental light and/or the second supplemental light to the light exit channel; or the A supplemental light source 310a and the second supplemental light source 310b may be disposed at different positions, such as one corresponding to the beam splitter 304, and the other corresponding to the

guiding component

309 or 313, as long as the beam splitter 304 and/or The guiding

element

309 or 313 may guide the first supplemental light and/or the second supplemental light to the light exiting channel.

Specifically, compared with the first embodiment, in the third embodiment, the light source device 300 further includes the supplemental light source 310, and the supplemental light source 310 emits complementary light to widen the color gamut of the light source device 300. The light source device 300 can be made to meet higher color gamut standards. In addition, the excitation light source 301, the collection lens system 302, the light homogenizing device 303, the first color wheel 306, the second color wheel 307, the

lens system

305, 308, and the like are substantially the same as the corresponding elements in the first embodiment, and here is not Let me repeat.

Please refer to FIG. 10. FIG. 10 is a schematic structural diagram of a light source device 400 according to a fourth embodiment of the present invention. The light source device 400 is substantially the same as the light source device 100 of the first embodiment, that is, the above description of the light source device 100 of the first embodiment can be basically applied to the light source device 400 of the fourth embodiment. The difference between the two is mainly that the first color correction piece 412 is located between the first color wheel 406 and the second color wheel 407, and the first color wheel 406 further includes the first color correction piece 412. The transmission region 406-2, the excitation light emitted by the beam splitter 404 is guided to the first color correction sheet 412 via the transmission region 406-2, and the first color correction sheet 412 further receives the second color wheel 407 The trimmed second light emitted by the two lights is directed to the beam splitter 404 via the transmissive region 406-2. Further, the transmissive region 406-2 may be a glass provided with an anti-reflection film for balancing the weight distribution on the first color wheel 406 and increasing the transmittance to reduce light loss. It is understood that the transmissive region 406-2 corresponds to the position of the first color correction piece 106-2 in the first embodiment.

Specifically, in the fourth embodiment, the first color correction sheet 412 is disposed between the two

color wheels

406 and 407, and the second light formed on the first color correction sheet 412 The dimming angle of the spot formed in the first color correction area of the first color wheel 106 in the first embodiment is small, in particular, the first color correction piece 412 is located in the two Between the two

lens systems

405 and 405 between the

color wheels

406, 407, the color correction effect is relatively good, and at the same time, the first color correction film 412 is relatively easy to manufacture. In addition, the excitation light source 401, the collection lens system 402, the light homogenizing device 403, the second color wheel 407, the

lens system

405, 408, the guiding

elements

409, 410, the light combining element 411, and the like may be substantially the same as the corresponding elements in the first embodiment. The same, no longer repeat here.

Referring to FIG. 11 , FIG. 12 and FIG. 13 , FIG. 11 is a schematic structural diagram of a light source device 500 according to a fifth embodiment of the present invention, FIG. 12 is a schematic structural view of the first color wheel illustrated in FIG. 11 , and FIG. 13 is a schematic diagram of FIG. 11 . A schematic structural view of the second color wheel shown. The light source device 500 is substantially the same as the light source device 100 of the first embodiment, that is, the above description of the light source device 100 of the first embodiment can be basically applied to the light source device 500 of the fifth embodiment. The difference between the two is mainly that the second color wheel 507 further includes a third wavelength conversion region 507-4 for receiving excitation light and performing wavelength conversion to generate fourth light, first The color correction sheet 506-2 further corresponds to the third wavelength conversion region 507-4 and is configured to receive the fourth light emitted by the third wavelength conversion region 507-4 and emit the fourth light, the beam splitter 504 It is also used to guide the fourth light to the light exit channel via the first light path. Specifically, the third wavelength conversion region 507-4 may be provided with a third wavelength conversion material, such as a yellow fluorescent material, and the fourth light includes yellow light for improving the white field of the white light emitted by the light source device 500. brightness. It can be understood that the first color correction sheet 506-2 can also filter part of the light in the fourth light or not filter, and the user can make settings according to actual needs. In addition, the first color wheel 506, the first wavelength conversion region 506-1, the second wavelength conversion region 507-2, the heat dissipation region 507-1, and the light processing region 507-3 may be substantially the same as in the first embodiment, where I won't go into details.

Referring to FIG. 14, FIG. 14 is a schematic structural diagram of a light source device 600 according to a sixth embodiment of the present invention. The light source device 600 is substantially the same as the light source device 100 of the first embodiment, that is, the above description of the light source device 100 of the first embodiment can be basically applied to the light source device 600 of the sixth embodiment. The difference between the two is mainly that the light source device 600 further includes a connecting shaft 612 that connects the first color wheel 606 and the second color wheel 607 such that the first color wheel 606 and the second color Wheel 607 rotates synchronously.

Specifically, in the sixth embodiment, since the two

color wheels

606 and 607 are integrally connected by a connecting shaft, the two

color wheels

606 and 607 are equivalent to a special color wheel, and The two

color wheels

606, 607 can share a single motor and can rotate synchronously, reducing the difficulty in controlling the synchronous rotation of the two

color wheels

606, 607. In addition, the excitation light source 601, the collection lens system 602, the light homogenizing device 603, the first color wheel 606, the second color wheel 607, the

lens system

605, 608, the guiding

elements

609, 610, the light combining element 611, etc. and the first embodiment The corresponding elements in the elements may be substantially the same and will not be described again here.

The present invention also provides a display device, which can be applied to a projector, an LCD (Liquid Crystal Display) display, etc., the display device can include a light source device, a spatial light modulator, and a projection lens. The light source device employs the

light source devices

100, 200, 300, 400, 500, and 600 of the above-described embodiments and the light source device according to the modified embodiment. The spatial light modulator is configured to output image light according to the light emitted by the light source device and the input image data, and the projection lens is configured to display the projected image according to the image light. The display device including the light source device according to the

light source device

100, 200, 300, 400, 500, 600 and its modified embodiment in the above embodiment has technical effects such as high brightness, compact structure, and small volume.

In addition, it can be understood that the

light source devices

100, 200, 300, 400, 500, 600 and the light source device according to the modified embodiment of the present invention can also be used for a stage light system, an in-vehicle lighting system, a surgical lighting system, and the like. It is not limited to the above display device.

It can be understood that, in each of the above embodiments, the various elements (such as the light splitting element, the guiding element, and the light combining element) may be "transmissive" or "reflective" for various kinds of light. Wavelength splitting/light combining, polarization splitting/light combining, and/or area splitting/closing light can be realized. Since various modified embodiments cannot be exhaustive, the various modified embodiments will not be described here. However, one of ordinary skill in the art can implement a variety of modified embodiments based on the content described in the present disclosure to achieve "guidance" of the various lights.

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

Claims

A light source device, characterized in that: the light source device comprises an excitation light source, two color wheels arranged in sequence on the optical path of the excitation light emitted by the excitation light source, and a first color correction piece, the two color colors The wheel includes a first color wheel including a first wavelength conversion region, and a second color wheel including a second wavelength conversion region and a light processing region,

The excitation light source is configured to emit excitation light, the first wavelength conversion region is configured to receive the excitation light and perform wavelength conversion to generate first light, and the second wavelength conversion region is configured to receive the excitation light and perform wavelength Converting to generate a second light, the first color correction sheet being located between the first color wheel and the second color wheel or on the first color wheel, the first color correction piece corresponding to the second color a wavelength conversion region and configured to receive the second light emitted by the second wavelength conversion region and filter out a portion of the second light to perform color correction on the second light, wherein the light processing region is further used Receiving the excitation light and emitting a third light, the first light, the second color after the color modification, and the third light are guided to the light exit channel.
The light source device according to claim 1, wherein said first color correction sheet further corresponds to said light processing area, said first color correction sheet further receiving excitation light from said excitation light source and receiving The excitation light is directed to a second wavelength conversion region and a light processing region of the second color wheel.
The light source device according to claim 2, wherein said light source device further comprises a beam splitter, said beam splitter being located between said excitation light source and said first color wheel, said beam splitter receiving said excitation Excitation light emitted by the light source and providing the excitation light to the first color wheel, the second color light from the first color correction sheet to the beam splitter, the beam splitter is also used And guiding the color-corrected second light to the light-emitting channel via a first optical path, the light-processing region emitting the third light in a direction away from the first color wheel, and the third light The light path is guided to the light exit channel via a second light path different from the first light path.
The light source device according to claim 3, wherein said first wavelength conversion region emits said first light to said beam splitter, and said beam splitter is further configured to pass said first light to said first light An optical path is directed to the light exit channel.
A light source device according to claim 3, wherein said second color wheel further comprises a second color correction area, said second color correction area corresponding to said first wavelength conversion area and for receiving said The first light emitted by a wavelength conversion region filters out a portion of the first light to color the first light, and the trimmed first light is directed to the light exit channel.
A light source device according to claim 3, wherein said second color wheel further comprises a third wavelength conversion region for receiving said excitation light and performing wavelength conversion to generate fourth light The first color correction sheet further corresponds to the third wavelength conversion region and is configured to receive the fourth light emitted by the third wavelength conversion region and emit the fourth light, and the beam splitter is further used for The fourth light is directed to the light exit channel via the first optical path, the fourth light comprising yellow light.
The light source device according to any one of claims 3 to 3, wherein the first color correction sheet is a first color correction area on the first color wheel.
A light source device according to claim 3, wherein said first color wheel further comprises a transmissive area corresponding to said first color correction piece, said first color correction piece being located at said first color wheel and said Between the second color wheel, the excitation light emitted by the beam splitter is guided to the first color correction sheet via the transmissive area, and the second color light after the color correction is emitted by the first color correction sheet The transmissive area is directed to the beam splitter.
A light source device according to claim 8, wherein said transmission region is provided with an anti-reflection film.
The light source device according to claim 3, wherein the light source device further comprises a guiding member and a light combining member, wherein the guiding member is configured to emit the second light, the first light and the light emitted by the beam splitter Or a third light emitted from the light processing region is guided to the light combining element, and the light combining element is configured to combine and receive the received first light, second light, and third light to The light exit channel.
The light source device according to claim 10, wherein said light source device further comprises a supplemental light source, said supplemental light source being disposed corresponding to said guiding member or the beam splitter, said supplemental light source for emitting the first supplemental light and/or Or a second supplemental light to broaden a color gamut of the light source device, the first supplemental light and/or the second supplemental light being directed to the light combining element via the beam splitter or the guiding element, The light combining element directs the first supplemental light and/or the second supplemental light to the light exit channel, wherein the first supplemental light is the same color as the first light, and the second supplemental light is The second light colors are the same.
A light source device according to claim 3, wherein said light source device further comprises a relay lens system and said light homogenizing means, said relay lens system and said light homogenizing means being located at said excitation light source and said beam splitting Between the sheets; the light source device further includes a lens system, the lens system being located between the beam splitter and the first color wheel, between the first color wheel and the second color wheel, The light processing zone of the second color wheel is remote from the side of the first color wheel and is used to collect and collimate light.
A light source device according to claim 1, wherein said light processing region is a scattering region, said light processing region receives said excitation light and scatters said excitation light, said scattered said excitation Light acts as the third light.
The light source device according to claim 1, wherein the second color wheel further comprises a heat dissipation area, and the position of the heat dissipation area corresponds to the first wavelength conversion area.
A light source device according to claim 1, wherein: the central axes of said first color wheel and said second color wheel are on the same straight line, and said first color wheel and said second color wheel are synchronized Rotate.
A light source device according to claim 1, wherein said light source means further comprises a connecting shaft, said connecting shaft connecting said first color wheel and said second color wheel such that said first color wheel and said The second color wheel rotates synchronously.
The light source device according to claim 1, wherein the first light is green light, the second light is red light, the third light is blue light, or the first light is red light. The second light is green light and the third light is blue light.
A display device comprising a light source device, characterized in that the light source device employs the light source device according to any one of claims 1-17.