WO2019037327A1 - 光源系统以及投影装置 - Google Patents

光源系统以及投影装置 Download PDF

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Publication number
WO2019037327A1
WO2019037327A1 PCT/CN2017/114733 CN2017114733W WO2019037327A1 WO 2019037327 A1 WO2019037327 A1 WO 2019037327A1 CN 2017114733 W CN2017114733 W CN 2017114733W WO 2019037327 A1 WO2019037327 A1 WO 2019037327A1
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Prior art keywords
light
light source
primary color
region
color light
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Ceased
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PCT/CN2017/114733
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English (en)
French (fr)
Inventor
杨锋
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication of WO2019037327A1 publication Critical patent/WO2019037327A1/zh
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity

Definitions

  • the present invention relates to the field of optical technologies, and in particular, to a light source system and a projection device.
  • light source systems for laser display typically use a fluorescent wheel to receive illumination of the excitation light to produce a laser.
  • the color wheel is formed with at least three sections of different attributes to provide a three-primary light source for display.
  • the color wheel of the light source increases the balance of the color wheel due to the imbalance of quality of each section.
  • Technical difficulty at the same time, the adjacent sections of each section are guaranteed to be seamlessly connected, and the process requirements are extremely high.
  • An embodiment of the present invention provides a light source system, where the light source system includes:
  • a light source device comprising: a first light source for emitting light of a first primary color; and a second light source for emitting light of a second primary color;
  • the wavelength conversion device includes at least a first region and a second region, wherein the first primary color light is alternately irradiated to the first region and the second region by a first optical path, wherein the first region is provided with a wavelength a conversion material for absorbing the first primary color light and for generating a third primary color light, the second region for scattering the first primary color light, wherein a wavelength of the third primary color light and the first primary color The wavelength of light is different;
  • a light guiding device for guiding the first primary color light to the wavelength conversion device, and the second primary color light, the first primary color light emitted from the wavelength conversion device, and Directing three primary colors of light to the output device;
  • Control device for generating a first light source control signal and/or a second light source control signal
  • the first light source control signal is configured to control a period in which the first light source and the second light source emit light according to different regions of the wavelength conversion device on the first optical path, so that the output device outputs in time series RGB trichromatic light
  • the second light source control signal for controlling a period in which the first light source and the second light source emit light according to different regions of the wavelength conversion device on the first optical path, such that the output device is The RGBY color is output on the timing.
  • the first light source control signal is configured to control the first light source to be turned off during a first preset time period in one cycle, and to control the first light source during a remaining time period in the one cycle turn on;
  • the first light source control signal is further configured to control the second light source to be turned on during the first preset time period in the one cycle, and to control the second light source to be turned off during a remaining time period in the one cycle. Causing the output device to output RGB three primary colors of light in time series;
  • the first preset time period is a partial time period in which the first area is in the first optical path, and the first area is separated from the first optical path and the second area begins to enter.
  • the time to the first optical path is the time at which the first preset time period ends.
  • the second light source control signal is configured to control the first light source to be turned off during a second preset period of one period, and to control the first light source during a remaining period of the one period turn on;
  • the second light source control signal is further configured to control the second light source to be turned on during a second preset period and a third preset period in the one period, and to control the remaining period in the remaining period of the one period
  • the two light sources are turned off, so that the output device outputs RGBY color light in time series;
  • the second preset time period is a partial time period in which the first area is in the first optical path
  • the third preset time period is the second preset time ending time to the first A period of time between a time when the area leaves the first optical path and the second area begins to enter the first optical path.
  • the first light source is a blue excitation light source for emitting blue excitation light
  • the second light source is a red light source for emitting red light
  • the wavelength converting material is a green wavelength converting material
  • the third primary color light is green fluorescent.
  • the light guiding device includes a light splitting device for transmitting/reflecting the first primary color light emitted by the first light source and the second primary color light emitted by the second light source;
  • a first region of the wavelength conversion device for receiving first primary color light transmitted/reflected from the spectroscopic device to generate the third primary color light, and reflecting the generated third primary color light to the spectroscopic light Device
  • the spectroscopic device is further configured to reflect/transmit the third primary color light.
  • the spectroscopic device is a dichroic color patch
  • the second region of the wavelength conversion device is configured to receive the first primary color light transmitted/reflected from the dichroic color patch and receive the same The first primary color light is scatter-transmitted;
  • the light guiding device further includes a reflecting device for receiving and reflecting the first primary color light emitted from the second region.
  • the spectroscopic device is a zone plated film, the zone plated sheet includes a central region and a peripheral region disposed around the central region, the central region of the region coated plate for transmitting the first a first primary color light emitted by a light source and a second primary color light emitted by the second light source;
  • the second region of the wavelength conversion device is configured to receive the first primary color light transmitted from the region plated sheet, and scatter and reflect the received first primary color light;
  • a peripheral region of the region plated sheet is for receiving and reflecting the third primary color light and the first primary color light emerging from the second region.
  • the spectroscopic device is a zone plate or mirror
  • the zone plate includes a central region and a peripheral region disposed around the central region, the region is coated with a central region of the diaphragm or the
  • the mirror is configured to reflect the first primary color light emitted by the first light source and the second primary color light emitted by the second light source;
  • the second region of the wavelength conversion device is configured to receive first primary color light reflected from the region coated plate or mirror, and scatter and reflect the received first primary color light;
  • a peripheral region of the region plated sheet or a peripheral region other than the mirror is for transmitting the third primary color light and the first primary color light emitted from the second region.
  • the light guiding device further includes a first concentrating device for receiving the second primary color light and the third primary color light emitted from the optical separating device, and a first primary color light scattered by the second region of the wavelength conversion device, and focusing, homogenizing, and shaping the received first primary color light, second primary color light, and third primary color light, and then outputting to the output Device.
  • a first concentrating device for receiving the second primary color light and the third primary color light emitted from the optical separating device, and a first primary color light scattered by the second region of the wavelength conversion device, and focusing, homogenizing, and shaping the received first primary color light, second primary color light, and third primary color light, and then outputting to the output Device.
  • Another aspect of an embodiment of the present invention provides a projection apparatus, comprising the light source system of any of the above.
  • the light source system provided by the invention has a simple structure, and the wavelength conversion device only needs to set two regions, and the control device generates a light source control signal on the first optical path according to different regions of the wavelength conversion device to control the first light source and the second
  • the illumination period of the light source makes the illumination mode adjustable, can meet different projection or illumination requirements, and can be applied to a projection device or a illumination device of a monolithic spatial light modulator.
  • FIG. 1 is a schematic structural view of a light source system according to a first embodiment of the present invention.
  • Fig. 2 is a timing chart showing the modulation timing of the first embodiment of the present invention.
  • Fig. 3 is a timing chart showing the modulation timing of the second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a wavelength conversion device according to a first embodiment of the present invention.
  • Fig. 5 is a view showing the configuration of a wavelength conversion device according to a second embodiment of the present invention.
  • Fig. 6 is a schematic structural view of a light source system according to a second embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a light source system 100 according to a first embodiment of the present invention.
  • the light source system 100 includes a light source device, a wavelength conversion device 121, a light guiding device, a control device 140, and an output device 150.
  • the light source device includes a first light source 111 for emitting light of a first primary color, and a second light source 112 for emitting light of a second primary color.
  • the wavelength conversion device 121 includes at least a first region 1211 and a second region 1212 (shown in FIG. 4), and the first primary color light is alternately illuminated in the first region through the first optical path. 1211 and the second region 1212.
  • the first region 1211 is provided with a wavelength converting material for absorbing the first primary color light and generating a third primary color light
  • the second region 1212 is for scattering the first primary color light.
  • the wavelength of the third primary color light is different from the wavelength of the first primary color light.
  • the first light source 111 is a blue excitation light source for emitting blue excitation light.
  • the second light source 112 is a red light source for emitting red light.
  • the wavelength converting material is a green wavelength converting material, and the third primary color light is green fluorescent.
  • the light guiding device is configured to guide the first primary color light to the wavelength conversion device 121, and to use the second primary color light and the first primary color emitted from the wavelength conversion device 121. Light and third primary color light are directed to the output device 150.
  • the first primary color light can be guided to the wavelength conversion device 121, and the second primary color light, the first primary color light and the third primary color light emitted from the wavelength conversion device 121 can be guided to the
  • the output device 150 has various embodiments. In the first embodiment of the present application and the subsequent second to fourth embodiments, some specific implementations of the light guiding device and other structures of the light source system 100 will be described. However, it can be understood that the light source system 100 of the present application is not limited to the embodiments in the subsequent first to fourth embodiments.
  • the control device 140 is configured to generate a first light source control signal and/or a second light source control signal.
  • the first light source control signal is used to control the period in which the first light source 111 and the second light source 112 emit light according to different regions of the wavelength conversion device 121 on the first optical path, so that the output device 150 The RGB three primary colors are output on the timing.
  • the second light source control signal is configured to control a period in which the first light source 111 and the second light source 112 emit light according to different regions of the wavelength conversion device 121 on the first optical path, so that the output device 150 is in timing Output RGBY color light.
  • the first light source control signal is configured to control the first light source 111 to be turned off during a first preset time period (eg, a period between t1 - t2 in FIG. 2) in one cycle, and in the one The remaining time period during the cycle controls the first light source 111 to be turned on.
  • a first preset time period eg, a period between t1 - t2 in FIG. 2 in one cycle
  • the first light source control signal is further configured to control the second light source 112 to be turned on during the first preset period of the one period, and control the second light source 112 during a remaining period of the one period Turning off, the output device 150 outputs RGB three primary colors of light in time series.
  • the first preset time period is a partial time period in which the first area 1211 is in the first optical path, and the first area 1211 leaves the first optical path and the second area.
  • the time when the 1212 starts to enter the first optical path is the time when the first preset time period ends.
  • the first light source 111 emits blue laser light B
  • the second light source 112 emits red light R
  • the first region 1211 of the wavelength conversion device 121 is provided with green fluorescent light. Powder G.
  • the first region 1211 is on the first optical path
  • the second light source 112 is off to emit no red light R
  • the first light source 111 is turned on
  • the emitted blue laser light B is irradiated on the On the green phosphor G of the first region 1211
  • the blue laser light B is converted into the green fluorescent light G, and therefore, the emitted light before the time t1 is the green light G.
  • the first region 1211 is on the first optical path
  • the first light source 111 is off to emit no blue laser light B
  • the second light source 112 is turned on and emits red light R, thus
  • the outgoing light in the period between t1 and t2 is red light R.
  • T is a period
  • the second region 1212 is on the first optical path
  • the second light source 112 is off to emit no red light R
  • the first light source 111 is turned on.
  • the blue laser light B emitted therefrom is scattered by the second region 1212, and therefore, the outgoing light in the period between t2-T is the blue laser light B.
  • the duration of the first preset time period may be specifically controlled according to a ratio of light that needs different colors in the outgoing light of the output device 150. For example, if some applications have a standard ratio of various color lights, press The standard ratio sets the duration of the first preset time period.
  • the above-described modulation of the first light source 111 and the second light source 112 can be performed by using the modulation timing of the first embodiment described above in the case where the RGB three primary color display is required.
  • FIG. 3 is a schematic diagram of modulation timing according to a second embodiment of the present invention.
  • the second light source control signal is configured to control the first light source 111 to be turned off during a second preset time period in one cycle (eg, a period between t1 - t2 in FIG. 3), and in the one The remaining time period during the cycle controls the first light source 111 to be turned on.
  • the second light source control signal is further configured to control the second light source 112 to be turned on during a second preset period and a third preset period (eg, a period between t2-t3 in FIG. 3) in the one period. And controlling the second light source 112 to be turned off during the remaining period of the one cycle, so that the output device 150 outputs the RGBY color light in time series.
  • the second preset time period is a partial time period in which the first area 1211 is in the first optical path
  • the third preset time period is the second preset time end end time to the The first area 1211 leaves the first optical path, and the second area 1212 opens.
  • the first area 1211 is on the first optical path, and the second light source 112 is off to emit no red light R.
  • the first light source 111 When it is turned on, the emitted blue laser light B is irradiated onto the green phosphor G of the first region 1211, and the blue laser light B is converted into the green fluorescent light G. Therefore, the emitted light before the time t1 is the green light G.
  • the first region 1211 is on the first optical path
  • the first light source 111 is off to emit no blue laser light B
  • the second light source 112 is turned on and emits red light R, thus
  • the outgoing light in the period between t1 and t2 is red light R.
  • the first region 1211 is on the first optical path
  • the second light source 112 is turned on and emits red light R
  • the first light source 111 is turned on
  • the blue laser light B emitted therefrom Irradiated on the green phosphor G of the first region 1211
  • the blue laser light B is converted into green fluorescence G
  • the red light R and the green fluorescent light G are mixed to form a yellow light Y, and therefore, the period between t2-t3 The light is yellow Y.
  • T is a period
  • the second region 1212 is on the first optical path
  • the second light source 112 is off to emit no red light R
  • the first light source 111 is turned on.
  • the blue laser light B emitted therefrom is scattered by the second region 1212, and therefore, the outgoing light in the period between t3-T is the blue laser light B.
  • the durations of the second preset period and the third preset period may be specifically controlled according to the ratio of the different colors of light emitted by the output device 150, for example, some occasions for use
  • the color light has a standard ratio
  • the duration of the second and third preset periods is set according to a standard ratio.
  • the first light source 111 and the second light source 112 can be modulated by the modulation timing of the second embodiment described above, thereby effectively improving. White field brightness.
  • the light source system 100 may further include a driving device for driving the wavelength conversion device 121 to move, so that the first primary color light can be alternately irradiated through the first optical path.
  • the first area 1211 and the second area 1212 are on. It will be appreciated that only one region is illuminated by the first primary color light at the same time.
  • FIG. 4 it is a schematic structural view of the wavelength conversion device 121 according to the first embodiment of the present invention.
  • the wavelength conversion device 121 may be a rotating wheel structure, and the driving device is configured to drive the wavelength conversion device 121 to rotate along a central axis thereof, so that the first region 1211 and the second region 1212 are at the wavelength conversion device 121. Alternately disposed on the first optical path during the rotation.
  • FIG. 5 it is a schematic structural diagram of the wavelength conversion device 121 according to the second embodiment of the present invention.
  • the wavelength conversion device 121 may be a strip structure, and the driving device is configured to drive the wavelength conversion device 121 to reciprocate in a predetermined direction, so that the first region 1211 and the second region 1212 are in the wavelength conversion device.
  • the 121 is alternately disposed on the first optical path during the reciprocating movement.
  • the wavelength conversion device 121 includes a first surface and a second surface, the first surface is provided with the wavelength conversion material at a position corresponding to the first region 1211, and the second surface is provided with heat dissipation.
  • the structure is to facilitate heat dissipation of the wavelength conversion device 121.
  • the light guiding device includes a beam splitting device 131, and the light splitting device 131 is configured to transmit the first primary light emitted by the first light source 111 and the second light source 112. The second primary color of light.
  • the first region 1211 of the wavelength conversion device 121 is configured to receive the first primary color light transmitted from the spectroscopic device 131 to generate the third primary color light, and reflect the generated third primary color light to the The spectroscopic device 131.
  • the spectroscopic device 131 is further configured to reflect the third primary color light.
  • the spectroscopic device 131 is a region plated film, and the region plated film includes a central region and a peripheral region disposed around the central region, wherein a central region of the region coated plate is used for a transmissive device.
  • the first primary light emitted by the first light source 111 and the second primary light emitted by the second light source 112 are described.
  • the second region 1212 of the wavelength conversion device 121 is configured to receive the first primary color light transmitted from the region plated sheet and to scatter and reflect the received first primary color light.
  • the peripheral region of the region plated sheet is for receiving and reflecting the third primary color light and the first primary color light emitted from the second region 1212.
  • the first surface of the wavelength conversion device 121 may be provided with a scattering reflective material at a position corresponding to the second region 1212 for the first primary color light projected onto the second region 1212. Perform scattering reflection.
  • the spectroscopic device 131 can be used to reflect the first primary color light emitted by the first light source 111 and the second primary color light emitted by the second light source 112.
  • the first region 1211 of the wavelength conversion device 121 is configured to receive the first primary color light reflected from the spectroscopic device 131 to generate the third primary color light, and reflect the generated third primary color light to the The spectroscopic device 131.
  • the second region 1212 of the wavelength conversion device 121 is configured to receive the first primary color light reflected from the spectroscopic device 131 and to scatter and reflect the received first primary color light.
  • the spectroscopic device 131 is further configured to transmit the first primary color light and the third primary color light emitted by the wavelength conversion device 121.
  • the spectroscopic device 131 can be a zone plate or a mirror.
  • the region plated sheet comprises a central region and a peripheral region disposed around the central region, the central region of the region coated plate or the mirror for reflecting the first primary color light emitted by the first light source 111 And a second primary color light emitted by the second light source 112.
  • the second region 1212 is configured to receive first primary color light reflected from the region plate or mirror, and scatter and reflect the received first primary light.
  • the size of the mirror is as small as possible, as long as it can reflect 4/5 or more of the excitation light.
  • a peripheral region of the region plated sheet or a peripheral region other than the mirror is for transmitting the third primary color light and the first primary color light emitted from the second region 1212.
  • the light guiding device may further include one or more reflecting devices (not shown) for guiding the second primary color light emitted from the beam splitting device to A concentrating device.
  • the light guiding device further includes a first concentrating device 133 disposed between the beam splitting device 131 and the output device 150.
  • An optical path for receiving the second primary color light and the third primary color light emitted from the spectroscopic device 131, and the first primary color light scattered by the second region 1212 of the wavelength conversion device 121, and receiving the received The first primary color light, the second primary color light, and the third primary color light are focused, homogenized, and shaped, and then exit to the output device 150.
  • the light guiding device further includes a second concentrating device 134, and the second concentrating device 134 is disposed on the optical path between the beam splitting device 131 and the wavelength converting device 121, and is used for
  • the emitted light of the spectroscopic device 131 is focused, homogenized, and shaped before being incident on the wavelength conversion device 121, and is used to perform the emitted light of the wavelength conversion device 121 before being incident on the spectroscopic device 131. Focus, uniform and plastic.
  • the light source system 100 provided by the invention has a simple structure, and the wavelength conversion device only needs to provide two regions, and the control device generates a light source control signal on the first optical path according to different regions of the wavelength conversion device to control the first light source and the first
  • the illumination period of the two light sources makes the illumination mode adjustable, can meet different projection or illumination requirements, and can be applied to a projection device or a illumination device of a monolithic spatial light modulator.
  • FIG. 6 is a schematic structural diagram of a light source system 200 according to a second embodiment of the present invention.
  • the main difference between the light source system 200 of the second embodiment and the light source system 100 of the first embodiment is that, in the second embodiment, the spectroscopic device 231 is a dichroic color patch, and the second region 1212 of the wavelength conversion device 221 is used. And receiving the first primary color light transmitted/reflected from the dichroic color patch, and scattering and transmitting the received first primary color light.
  • the specific solutions applicable to the first embodiment may be correspondingly applied to the second embodiment, in order to save space and avoid repetition. I won't go into details here.
  • the second region 1212 can be a transparent material for scattering transmission of the received first primary color light. In other embodiments, the second region 1212 can be configured as a via structure to transmit the received first primary color light.
  • the light guiding device further includes a reflecting device 232 for reflecting the first primary color light emitted from the second region 1212 to the first concentrating device 233.
  • the spectroscopic device 231 is configured to transmit the first primary color light emitted by the first light source 211 and the second primary color light emitted by the second light source 212.
  • the spectroscopic device 231 can be configured to reflect the first primary color light emitted by the first light source 211 and the second primary color light emitted by the second light source 212. Place The first region 1211 of the wavelength conversion device 221 is configured to receive the first primary color light reflected from the spectroscopic device 231 to generate the third primary color light, and reflect the generated third primary color light to the spectroscopic light. Device 231. The spectroscopic device 231 is further configured to transmit the third primary color light emitted by the wavelength conversion device 221.
  • the light guiding device may further include one or more reflecting devices (not shown) for guiding the second primary color light emitted from the beam splitting device to A concentrating device.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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Abstract

一种光源系统(100)及投影装置。光源系统(100)包括发射第一基色光的第一光源(111)、发射第二基色光的第二光源(112)、波长转换装置(121)以及控制装置(140)。波长转换装置(121)至少包括第一、第二区域(1211,1212)，第一基色光通过第一光路交替地照射在第一、第二区域(1211,1212)，第一区域(1211)设有波长转换材料，用于吸收第一基色光并产生第三基色光，第二区域(1212)用于散射第一基色光。控制装置(140)用于根据波长转换装置(121)的不同区域处于第一光路上产生光源控制信号，光源控制信号用于控制第一光源(111)和第二光源(112)发光的时段，使得光源系统(100)在时序上输出RGB三基色光或RGBY色光。光源系统(100)结构简单，且发光模式可调，可满足不同的投影或照明需求。

Description

光源系统以及投影装置 技术领域
本发明涉及光学技术领域，尤其涉及一种光源系统以及投影装置。
背景技术
目前，用于激光显示的光源系统通常使用荧光轮接收激发光的照射而产生受激光。其中，对于单片式投影机来说，色轮至少形成有三个不同属性的区段才能提供用于显示的三基色光源，该种光源色轮由于各区段质量不平衡，增加了色轮平衡的技术难度，同时各区段邻接处为保证无缝对接，工艺要求极高。
发明内容
鉴于此，有必要提供一种光源系统以及投影装置，利用结构简单的波长转换装置来提供发光模式可调的光源，以满足不同的投影或照明需求。
本发明实施例一方面提供一种光源系统，所述光源系统包括：
光源装置，包括用于发射第一基色光的第一光源，以及用于发射第二基色光的第二光源；
波长转换装置，至少包括第一区域和第二区域，所述第一基色光通过第一光路交替地照射在所述第一区域和所述第二区域，其中，所述第一区域设有波长转换材料，用于吸收所述第一基色光并产生第三基色光，所述第二区域用于散射所述第一基色光，其中，所述第三基色光的波长与所述第一基色光的波长不同；
输出装置；
光引导装置，用于将所述第一基色光引导至所述波长转换装置，以及将所述第二基色光、从所述波长转换装置出射的第一基色光和第 三基色光引导至所述输出装置；以及
控制装置，用于产生第一光源控制信号和/或第二光源控制信号；
其中，所述第一光源控制信号用于根据所述波长转换装置的不同区域处于所述第一光路上控制所述第一光源和第二光源发光的时段，使得所述输出装置在时序上输出RGB三基色光，所述第二光源控制信号用于根据所述波长转换装置的不同区域处于所述第一光路上控制所述第一光源和第二光源发光的时段，使得所述输出装置在时序上输出RGBY色光。
在一种实施方式中，所述第一光源控制信号用于在一个周期内的第一预设时段控制所述第一光源关闭，并在所述一个周期内的其余时段控制所述第一光源打开；
所述第一光源控制信号还用于在所述一个周期内的所述第一预设时段控制所述第二光源打开，并在所述一个周期内的其余时段控制所述第二光源关闭，使得所述输出装置在时序上输出RGB三基色光；
其中，所述第一预设时段为所述第一区域处于所述第一光路上的时段中的部分时段，并且在所述第一区域离开所述第一光路、所述第二区域开始进入到所述第一光路的时刻为所述第一预设时段结束的时刻。
在一种实施方式中，所述第二光源控制信号用于在一个周期内的第二预设时段控制所述第一光源关闭，并在所述一个周期内的其余时段控制所述第一光源打开；
所述第二光源控制信号还用于在所述一个周期内的第二预设时段和第三预设时段控制所述第二光源打开，并在所述一个周期内的其余时段控制所述第二光源关闭，使得所述输出装置在时序上输出RGBY色光；
其中，所述第二预设时段为所述第一区域处于所述第一光路上的时段中的部分时段，所述第三预设时段为所述第二预设时段结束时刻至所述第一区域离开所述第一光路、所述第二区域开始进入到所述第一光路的时刻之间的时段。
在一种实施方式中，所述第一光源为蓝色激发光源，用于发射蓝色激发光；
所述第二光源为红色光源，用于发射红色光线；
所述波长转换材料为绿色波长转换材料，所述第三基色光为绿色荧光。
在一种实施方式中，所述光引导装置包括分光装置，所述分光装置用于透射/反射所述第一光源发射的第一基色光和所述第二光源发射的第二基色光；
所述波长转换装置的第一区域用于接收从所述分光装置透射/反射出的第一基色光以产生所述第三基色光，并将产生的所述第三基色光反射至所述分光装置；
所述分光装置还用于反射/透射所述第三基色光。
在一种实施方式中，所述分光装置为二向色片，所述波长转换装置的第二区域用于接收从所述二向色片透射/反射出的第一基色光，并对接收到的所述第一基色光进行散射透射；
所述光引导装置还包括反射装置，所述反射装置用于接收并反射从所述第二区域出射的第一基色光。
在一种实施方式中，所述分光装置为区域镀膜片，所述区域镀膜片包括中心区域和设在所述中心区域周围的外围区域，所述区域镀膜片的中心区域用于透射所述第一光源发射的第一基色光和所述第二光源发射的第二基色光；
所述波长转换装置的第二区域用于接收从所述区域镀膜片透射出的第一基色光，并对接收到的第一基色光进行散射反射；
所述区域镀膜片的外围区域用于接收并反射所述第三基色光以及从所述第二区域出射的第一基色光。
在一种实施方式中，所述分光装置为区域镀膜片或反射镜，所述区域镀膜片包括中心区域和设在所述中心区域周围的外围区域，所述区域镀膜片的中心区域或所述反射镜用于反射所述第一光源发射的第一基色光和所述第二光源发射的第二基色光；
所述波长转换装置的第二区域用于接收从所述区域镀膜片或反射镜反射出的第一基色光，并对接收到的第一基色光进行散射反射；
所述区域镀膜片的外围区域或所述反射镜之外的周围区域用于透射所述第三基色光以及从所述第二区域出射的第一基色光。
在一种实施方式中，所述光引导装置还包括第一聚光装置，所述第一聚光装置用于接收从所述分光装置出射的第二基色光和第三基色光、以及经所述波长转换装置的第二区域散射的第一基色光，并将接收到的所述第一基色光、第二基色光和第三基色光进行聚焦、匀光和整形之后，出射至所述输出装置。
本发明实施例另一方面还提供一种投影装置，所述投影装置包括上述任一所述的光源系统。
本发明提供的光源系统结构简单，波长转换装置只需要设置两个区域，通过控制装置根据所述波长转换装置的不同区域处于所述第一光路上产生光源控制信号以控制第一光源和第二光源的发光时段，使得发光模式可调，可满足不同的投影或照明需求，可应用于单片式空间光调制器的投影装置或照明装置中。
附图说明
图1是本发明第一实施方式的光源系统的结构示意图。
图2是本发明第一实施方式的调制时序示意图。
图3是本发明第二实施方式的调制时序示意图。
图4是本发明第一实施方式的波长转换装置的结构示意图。
图5是本发明第二实施方式的波长转换装置的结构示意图。
图6是本发明第二实施方式的光源系统的结构示意图。
主要元件符号说明
光源系统         100、200
第一光源         111、211
第二光源         112、212
波长转换装置     121、221
第一区域         1211、1211’
第二区域         1212、1212’
分光装置         131、231
反射装置         232
第一聚光装置     133、233
第二聚光装置     134、234
控制装置         140、240
输出装置         150、250
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
请参阅图1，为本发明第一实施方式的光源系统100的结构示意图。在本实施方式中，所述光源系统100包括光源装置、波长转换装置121、光引导装置、控制装置140以及输出装置150。
在本实施方式中，所述光源装置包括用于发射第一基色光的第一光源111，以及用于发射第二基色光的第二光源112。
在本实施方式中，所述波长转换装置121至少包括第一区域1211和第二区域1212(如图4所示)，所述第一基色光通过第一光路交替地照射在所述第一区域1211和所述第二区域1212。在本实施方式中，所述第一区域1211设有波长转换材料，用于吸收所述第一基色光并产生第三基色光，所述第二区域1212用于散射所述第一基色光。其中，所述第三基色光的波长与所述第一基色光的波长不同。
在本实施方式中，所述第一光源111为蓝色激发光源，用于发射蓝色激发光。所述第二光源112为红色光源，用于发射红色光线。所述波长转换材料为绿色波长转换材料，所述第三基色光为绿色荧光。
在本实施方式中，所述光引导装置用于将所述第一基色光引导至所述波长转换装置121，以及将所述第二基色光、从所述波长转换装置121出射的第一基色光和第三基色光引导至所述输出装置150。
可以理解，能够将所述第一基色光引导至所述波长转换装置121，以及将所述第二基色光、从所述波长转换装置121出射的第一基色光和第三基色光引导至所述输出装置150有多种实施方案，本申请第一实施方式以及后续的第二至第四实施方式中将对所述光引导装置以及所述光源系统100的其他结构的一些具体实现方案进行说明，但可以理解，本申请的光源系统100并不以后续的第一至第四实施方式中的实施方式为限。
在本实施方式中，所述控制装置140用于产生第一光源控制信号和/或第二光源控制信号。其中，所述第一光源控制信号用于根据所述波长转换装置121的不同区域处于所述第一光路上控制所述第一光源111和第二光源112发光的时段，使得所述输出装置150在时序上输出RGB三基色光。所述第二光源控制信号用于根据所述波长转换装置121的不同区域处于所述第一光路上控制所述第一光源111和第二光源112发光的时段，使得所述输出装置150在时序上输出RGBY色光。
请参阅图2，是本发明第一实施方式的调制时序示意图。具体地，所述第一光源控制信号用于在一个周期内的第一预设时段(例如图2中的t1-t2之间的时段)控制所述第一光源111关闭，并在所述一个周期内的其余时段控制所述第一光源111打开。
所述第一光源控制信号还用于在所述一个周期内的所述第一预设时段控制所述第二光源112打开，并在所述一个周期内的其余时段控制所述第二光源112关闭，使得所述输出装置150在时序上输出RGB三基色光。
其中，所述第一预设时段为所述第一区域1211处于所述第一光路上的时段中的部分时段，并且在所述第一区域1211离开所述第一光路、所述第二区域1212开始进入到所述第一光路的时刻为所述第一预设时段结束的时刻。
具体地，请一并参阅图1-2，所述第一光源111发射蓝激光B，所述第二光源112发射红光R，所述波长转换装置121的第一区域1211上设有绿色荧光粉G。
在t1时刻之前，所述第一区域1211处于所述第一光路上，所述第二光源112关闭不发射红光R，所述第一光源111打开，其发射的蓝激光B照射在所述第一区域1211的绿色荧光粉G上，蓝激光B被转换为绿色荧光G，因此，在t1时刻之前的出射光为绿光G。
在t1-t2之间的时段，所述第一区域1211处于所述第一光路上，所述第一光源111关闭不发射蓝激光B，所述第二光源112打开并发射红光R，因此，在t1-t2之间的时段的出射光为红光R。
在t2-T(T为一个周期)之间的时段，所述第二区域1212处于所述第一光路上，所述第二光源112关闭不发射红光R，所述第一光源111打开，其发射的蓝激光B被所述第二区域1212散射出去，因此，在t2-T之间的时段的出射光为蓝激光B。
可以理解，所述第一预设时段的时长具体可以根据所述输出装置150的出射光中需要不同颜色光的比例进行控制，例如，有的使用场合对各种颜色光有标准比例，则按标准比例设置所述第一预设时段的时长。
可以理解，在需要使用RGB三基色显示的场合中可以采用上述第一实施方式的调制时序对所述第一光源111和所述第二光源112进行上述调制。
请参阅图3，是本发明第二实施方式的调制时序示意图。具体地，所述第二光源控制信号用于在一个周期内的第二预设时段(例如图3中的t1-t2之间的时段)控制所述第一光源111关闭，并在所述一个周期内的其余时段控制所述第一光源111打开。
所述第二光源控制信号还用于在所述一个周期内的第二预设时段和第三预设时段(例如图3中的t2-t3之间的时段)控制所述第二光源112打开，并在所述一个周期内的其余时段控制所述第二光源112关闭，使得所述输出装置150在时序上输出RGBY色光。
其中，所述第二预设时段为所述第一区域1211处于所述第一光路上的时段中的部分时段，所述第三预设时段为所述第二预设时段结束时刻至所述第一区域1211离开所述第一光路、所述第二区域1212开 始进入到所述第一光路的时刻之间的时段。
具体地，请一并参阅图1、3，在t1时刻之前，所述第一区域1211处于所述第一光路上，所述第二光源112关闭不发射红光R，所述第一光源111打开，其发射的蓝激光B照射在所述第一区域1211的绿色荧光粉G上，蓝激光B被转换为绿色荧光G，因此，在t1时刻之前的出射光为绿光G。
在t1-t2之间的时段，所述第一区域1211处于所述第一光路上，所述第一光源111关闭不发射蓝激光B，所述第二光源112打开并发射红光R，因此，在t1-t2之间的时段的出射光为红光R。
在t2-t3之间的时段，所述第一区域1211处于所述第一光路上，所述第二光源112打开并发射红光R，所述第一光源111打开，其发射的蓝激光B照射在所述第一区域1211的绿色荧光粉G上，蓝激光B被转换为绿色荧光G，红光R与绿色荧光G混合形成黄光Y，因此，在t2-t3之间的时段的出射光为黄光Y。
在t3-T(T为一个周期)之间的时段，所述第二区域1212处于所述第一光路上，所述第二光源112关闭不发射红光R，所述第一光源111打开，其发射的蓝激光B被所述第二区域1212散射出去，因此，在t3-T之间的时段的出射光为蓝激光B。
可以理解，所述第二预设时段和所述第三预设时段的时长具体可以分别根据所述输出装置150的出射光中需要不同颜色光的比例进行控制，例如，有的使用场合对各种颜色光有标准比例，则按标准比例设置所述第二、三预设时段的时长。
可以理解，在需要使用RGBY色显示的场合，例如需要显示白场时可以采用上述第二实施方式的调制时序对所述第一光源111和所述第二光源112进行上述调制，以有效地提高白场亮度。
在本实施方式中，所述光源系统100还可包括驱动装置，所述驱动装置用于驱动所述波长转换装置121运动，使所述第一基色光能够通过所述第一光路交替地照射在所述第一区域1211和第二区域1212上。可以理解，在同一时间只有一个区域被所述第一基色光照射到。
如图4所示，是本发明第一实施方式的波长转换装置121的结构示意图。所述波长转换装置121可为转动轮结构，所述驱动装置用于驱动所述波长转换装置121沿其中心轴转动，使所述第一区域1211和第二区域1212在所述波长转换装置121转动过程中交替地设置于所述第一光路上。
可选地，如图5所示，是本发明第二实施方式的波长转换装置121的结构示意图。所述波长转换装置121可为条状结构，所述驱动装置用于驱动所述波长转换装置121沿预设方向往复移动，使所述第一区域1211和第二区域1212在所述波长转换装置121往复移动过程中交替地设置于所述第一光路上。
可以理解，所述波长转换装置121包括第一表面和第二表面，所述第一表面在对应于所述第一区域1211之处设有所述波长转换材料，所述第二表面设有散热结构，以利于所述波长转换装置121散热。
请再次参阅图1，在本实施方式中，所述光引导装置包括分光装置131，所述分光装置131用于透射所述第一光源111发射的第一基色光和所述第二光源112发射的第二基色光。所述波长转换装置121的第一区域1211用于接收从所述分光装置131透射出的第一基色光以产生所述第三基色光，并将产生的所述第三基色光反射至所述分光装置131。在本实施方式中，所述分光装置131还用于反射所述第三基色光。
在本实施方式中，所述分光装置131为区域镀膜片，所述区域镀膜片包括中心区域和设在所述中心区域周围的外围区域，其中，所述区域镀膜片的中心区域用于透射所述第一光源111发射的第一基色光和所述第二光源112发射的第二基色光。
在本实施方式中，所述波长转换装置121的第二区域1212用于接收从所述区域镀膜片透射出的第一基色光，并对接收到的第一基色光进行散射反射。在本实施方式中，所述区域镀膜片的外围区域用于接收并反射所述第三基色光以及从所述第二区域1212出射的第一基色光。
在本实施方式中，所述波长转换装置121的第一表面在对应于所述第二区域1212之处可设有散射反射材料，用于对投射到所述第二区域1212的第一基色光进行散射反射。
可以理解，在另一实施方式中，所述分光装置131可用于反射第一光源111发射的第一基色光和第二光源112发射的第二基色光。所述波长转换装置121的第一区域1211用于接收从所述分光装置131反射出的第一基色光以产生所述第三基色光，并将产生的所述第三基色光反射至所述分光装置131。所述波长转换装置121的第二区域1212用于接收从所述分光装置131反射出的第一基色光，并对接收到的第一基色光进行散射反射。所述分光装置131还用于透射所述波长转换装置121出射的第一基色光和第三基色光。
在所述另一实施方式中，所述分光装置131可为区域镀膜片或反射镜。其中，所述区域镀膜片包括中心区域和设在所述中心区域周围的外围区域，所述区域镀膜片的中心区域或所述反射镜用于反射所述第一光源111发射的第一基色光和所述第二光源112发射的第二基色光。所述第二区域1212用于接收从所述区域镀膜片或反射镜反射出的第一基色光，并对接收到的第一基色光进行散射反射。其中，反射镜的尺寸尽量小，只要能够将4/5以上的激发光反射即可。所述区域镀膜片的外围区域或所述反射镜之外的周围区域用于透射所述第三基色光以及从所述第二区域1212出射的第一基色光。
在所述另一实施方式中，所述光引导装置还可包括一个或多个反射装置(图未示)，所述反射装置用于将从所述分光装置出射的第二基色光引导至第一聚光装置。
请再次参阅图1，在本实施方式中，所述光引导装置还包括第一聚光装置133，所述第一聚光装置133设置于所述分光装置131与所述输出装置150之间的光路上，用于接收从所述分光装置131出射的第二基色光和第三基色光、以及经所述波长转换装置121的第二区域1212散射的第一基色光，并将接收到的所述第一基色光、第二基色光和第三基色光进行聚焦、匀光和整形之后，出射至所述输出装置150。
在本实施方式中，所述光引导装置还包括第二聚光装置134，所述第二聚光装置134设置于所述分光装置131与所述波长转换装置121之间的光路上，用于将所述分光装置131的出射光在入射至所述波长转换装置121之前进行聚焦、匀光和整形，以及用于将所述波长转换装置121的出射光在入射至所述分光装置131之前进行聚焦、匀光和整形。
本发明提供的光源系统100结构简单，波长转换装置只需要设置两个区域，通过控制装置根据所述波长转换装置的不同区域处于所述第一光路上产生光源控制信号以控制第一光源和第二光源的发光时段，使得发光模式可调，可满足不同的投影或照明需求，可应用于单片式空间光调制器的投影装置或照明装置中。
请参阅图6，是本发明第二实施方式的光源系统200的结构示意图。第二实施方式的光源系统200与第一实施方式的光源系统100的主要区别在于，在所述第二实施方式中，分光装置231为二向色片，波长转换装置221的第二区域1212用于接收从所述二向色片透射/反射出的第一基色光，并对接收到的所述第一基色光进行散射透射。需要说明的是，在本发明实施例的精神或基本特征的范围内，适用于第一实施方式中的各具体方案也可以相应的适用于第二实施方式中，为节省篇幅及避免重复起见，在此就不再赘述。
在一种实施方式中，所述第二区域1212可采用透明材料，以便对接收到的第一基色光进行散射透射。在其他实施方式中，所述第二区域1212可设为通孔结构，以便对接收到的第一基色光进行透射。
在所述第二实施方式中，所述光引导装置还包括反射装置232，所述反射装置232用于将从所述第二区域1212出射的第一基色光反射至第一聚光装置233。
在所述第二实施方式中，所述分光装置231用于透射第一光源211发射的第一基色光和第二光源212发射的第二基色光。
可以理解，在另一实施方式中，所述分光装置231可用于反射第一光源211发射的第一基色光和第二光源212发射的第二基色光。所 述波长转换装置221的第一区域1211用于接收从所述分光装置231反射出的第一基色光以产生所述第三基色光，并将产生的所述第三基色光反射至所述分光装置231。所述分光装置231还用于透射所述波长转换装置221出射的第三基色光。
在所述另一实施方式中，所述光引导装置还可包括一个或多个反射装置(图未示)，所述反射装置用于将从所述分光装置出射的第二基色光引导至第一聚光装置。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种光源系统，其特征在于，所述光源系统包括：
    光源装置，包括用于发射第一基色光的第一光源，以及用于发射第二基色光的第二光源；
    波长转换装置，至少包括第一区域和第二区域，所述第一基色光通过第一光路交替地照射在所述第一区域和所述第二区域，其中，所述第一区域设有波长转换材料，用于吸收所述第一基色光并产生第三基色光，所述第二区域用于散射所述第一基色光，其中，所述第三基色光的波长与所述第一基色光的波长不同；
    输出装置；
    光引导装置，用于将所述第一基色光引导至所述波长转换装置，以及将所述第二基色光、从所述波长转换装置出射的第一基色光和第三基色光引导至所述输出装置；以及
    控制装置，用于产生第一光源控制信号和/或第二光源控制信号；
    其中，所述第一光源控制信号用于根据所述波长转换装置的不同区域处于所述第一光路上控制所述第一光源和第二光源发光的时段，使得所述输出装置在时序上输出RGB三基色光，所述第二光源控制信号用于根据所述波长转换装置的不同区域处于所述第一光路上控制所述第一光源和第二光源发光的时段，使得所述输出装置在时序上输出RGBY色光。
  2. 如权利要求1所述的光源系统，其特征在于：所述第一光源控制信号用于在一个周期内的第一预设时段控制所述第一光源关闭，并在所述一个周期内的其余时段控制所述第一光源打开；
    所述第一光源控制信号还用于在所述一个周期内的所述第一预设时段控制所述第二光源打开，并在所述一个周期内的其余时段控制所述第二光源关闭，使得所述输出装置在时序上输出RGB三基色光；
    其中，所述第一预设时段为所述第一区域处于所述第一光路上的时段中的部分时段，并且在所述第一区域离开所述第一光路、所述第二区域开始进入到所述第一光路的时刻为所述第一预设时段结束的时 刻。
  3. 如权利要求1所述的光源系统，其特征在于：所述第二光源控制信号用于在一个周期内的第二预设时段控制所述第一光源关闭，并在所述一个周期内的其余时段控制所述第一光源打开；
    所述第二光源控制信号还用于在所述一个周期内的第二预设时段和第三预设时段控制所述第二光源打开，并在所述一个周期内的其余时段控制所述第二光源关闭，使得所述输出装置在时序上输出RGBY色光；
    其中，所述第二预设时段为所述第一区域处于所述第一光路上的时段中的部分时段，所述第三预设时段为所述第二预设时段结束时刻至所述第一区域离开所述第一光路、所述第二区域开始进入到所述第一光路的时刻之间的时段。
  4. 如权利要求1所述的光源系统，其特征在于：所述第一光源为蓝色激发光源，用于发射蓝色激发光；
    所述第二光源为红色光源，用于发射红色光线；
    所述波长转换材料为绿色波长转换材料，所述第三基色光为绿色荧光。
  5. 如权利要求1～4任一项所述的光源系统，其特征在于：所述光引导装置包括分光装置，所述分光装置用于透射/反射所述第一光源发射的第一基色光和所述第二光源发射的第二基色光；
    所述波长转换装置的第一区域用于接收从所述分光装置透射/反射出的第一基色光以产生所述第三基色光，并将产生的所述第三基色光反射至所述分光装置；
    所述分光装置还用于反射/透射所述第三基色光。
  6. 如权利要求5所述的光源系统，其特征在于：所述分光装置为二向色片，所述波长转换装置的第二区域用于接收从所述二向色片透射/反射出的第一基色光，并对接收到的所述第一基色光进行散射透射；
    所述光引导装置还包括反射装置，所述反射装置用于接收并反射 从所述第二区域出射的第一基色光。
  7. 如权利要求5所述的光源系统，其特征在于：所述分光装置为区域镀膜片，所述区域镀膜片包括中心区域和设在所述中心区域周围的外围区域，所述区域镀膜片的中心区域用于透射所述第一光源发射的第一基色光和所述第二光源发射的第二基色光；
    所述波长转换装置的第二区域用于接收从所述区域镀膜片透射出的第一基色光，并对接收到的第一基色光进行散射反射；
    所述区域镀膜片的外围区域用于接收并反射所述第三基色光以及从所述第二区域出射的第一基色光。
  8. 如权利要求5所述的光源系统，其特征在于：所述分光装置为区域镀膜片或反射镜，所述区域镀膜片包括中心区域和设在所述中心区域周围的外围区域，所述区域镀膜片的中心区域或所述反射镜用于反射所述第一光源发射的第一基色光和所述第二光源发射的第二基色光；
    所述波长转换装置的第二区域用于接收从所述区域镀膜片或反射镜反射出的第一基色光，并对接收到的第一基色光进行散射反射；
    所述区域镀膜片的外围区域或所述反射镜之外的周围区域用于透射所述第三基色光以及从所述第二区域出射的第一基色光。
  9. 如权利要求5所述的光源系统，其特征在于：所述光引导装置还包括第一聚光装置，所述第一聚光装置用于接收从所述分光装置出射的第二基色光和第三基色光、以及经所述波长转换装置的第二区域散射的第一基色光，并将接收到的所述第一基色光、第二基色光和第三基色光进行聚焦、匀光和整形之后，出射至所述输出装置。
  10. 一种投影装置，其特征在于：所述投影装置包括如权利要求1至9中任意一项所述的光源系统。
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