WO2019148703A1

WO2019148703A1 - Light source device and projection device having same

Info

Publication number: WO2019148703A1
Application number: PCT/CN2018/088383
Authority: WO
Inventors: 亓森林; 杨佳翼; 欧计敏; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2018-02-02
Filing date: 2018-05-25
Publication date: 2019-08-08
Also published as: CN110133949A; CN110133949B

Abstract

A light source device (1) and a projection device (2) having a light source device (1), the light source device (1) comprising: a light source module (101) for emitting a first light (S10) and a second light (S20); a light splitting device (103) for transmitting the first light (S10) and reflecting the second light (S20); a light reflecting device (105) for receiving the second light (S20) and reflecting the second light to the light splitting device (103); a color wheel module (106) for converting the first light (S10) into a third light (S30) and reflecting the third light to a filter device (104); and the filter device (104) for transmitting the first light (S10), reflecting the third light (S30), and transmitting the second light (S21) which has a polarization direction converted by means of the light reflecting device (105) and is reflected. The second light (S21) and the third light (S30) after being mixed are output, thereby achieving the purpose of flexible adjustment of the luminous flux and color temperature of the mixed light.

Description

Light source device and projection device having the same

Technical field

The present invention relates to the field of light source devices, and in particular to a light source device and a projection device having the same.

Background technique

At present, the technology of using a single laser to excite the corresponding phosphors and then mixing them into white light has become increasingly mature. However, the luminous flux and color temperature of the white light mixed by the single laser excitation color wheel cannot be adjusted, and the output white light is single, which cannot meet the use requirements in various scenarios.

Summary of the invention

The present invention mainly provides a light source device and a projection device having the same, which aims to solve the problem that the luminous flux and the color temperature of the current white light are not adjusted.

In order to solve the above technical problem, the technical solution adopted by the present invention is: providing a light source device, comprising: a light source module, a light splitting device, a filter device, a reflective device, and a color wheel module; wherein

The light source module emits a first light and a second light having different polarization directions, and the first light and the second light have the same or different emission power;

The light splitting device transmits the first light to reflect the second light;

The light reflecting device receives the second light and converts a polarization direction of the second light into a direction opposite to a polarization direction of the first light, and then reflects the light to the light splitting device;

The color wheel module to convert the first light into a third light and to reflect the filter device;

The filter device transmits the first light, reflects the third light, and transmits the second light that is converted and reflected by the light reflecting device;

The second ray and the third ray, which are converted in a polarization direction, form a mixed ray output.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a light source device, including: a light source module, a light splitting device, a reflective device, and a color wheel module;

The light splitting device includes a first area for reflecting the first light and transmitting the second light; and the second area for transmitting a third light;

The color wheel module converts the first light into a third light and reflects to the light splitting device;

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a light source device, including: a light source module, a light splitting device, a light reflecting device, a color wheel module, a reflecting device, and a filtering device; The filter device includes a first filter device and a second filter device; the reflective device includes a first reflecting device and a second reflecting device.

The light splitting device is configured to reflect the first light and transmit the second light;

The color wheel module converts the first light into a third light and reflects to the first filter;

The first filter device transmits the first light to reflect the third light;

The second filter device transmits the third light and reflects a second light that is consistent with the polarization direction of the first light;

The anti-first reflecting means for reflecting the third light reflected by the first filtering means to the second filtering means; the second reflecting means for reflecting the second reflection of the light separating means Light to the second filter device;

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a projection apparatus including the above light source apparatus.

The light source device of the present invention divides the light source module into a first light and a second light, so that the first light is used to excite the wavelength conversion material to form other color lights, and the second light is mixed as the compensation light and the first light to form a mixture. The light, by adjusting the emission power of the first light and/or the second light, achieves the purpose of adjusting the luminous flux and color temperature of the mixed light, and solves the problem that the luminous flux and the color temperature of the current mixed white light cannot be adjusted.

DRAWINGS

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

2 is a schematic structural view of a monochrome color wheel of a first embodiment of a light source device according to the present invention;

3 is a schematic structural view of a multicolor color wheel of a first embodiment of a light source device according to the present invention;

4 is a diagram showing the relationship between the rotation angle of the multicolor color wheel and the laser current value in the first embodiment of the light source device of the present invention;

Figure 5 is a schematic structural view of a second embodiment of a light source device according to the present invention;

Figure 6 is a schematic structural view of a third embodiment of a light source device according to the present invention;

Fig. 7 is a schematic structural view of a projection apparatus of the present invention.

Detailed ways

1 is a schematic structural view of a first embodiment of a light source device according to the present invention. As shown in FIG. 1, the light source device 1 of the present embodiment includes a light source module 101, a collecting lens 102a, a first collecting lens group 102b, a second collecting lens group 102c, a beam splitting device 103, a filter device 104, and a reflecting device. 105 and color wheel module 106.

The light source module 101 is configured to emit a first light S10 and a second light S20 having different polarization directions. In this embodiment, the first light S10 and the second light S20 are p light and s light whose polarization directions are perpendicular to each other. The spectroscopic device 103 can transmit the first light S10 and reflect the second light S20. The light reflecting device 105 can receive the second light ray S20 reflected by the light splitting device 103 and convert the polarization direction of the second light ray S20 into a direction opposite to the polarization direction of the first light ray S10, and then reflect it to the light separating device 103. The color wheel module 106 includes a color wheel 1061 and a rotating shaft 1062. As the rotating shaft 1062 rotates, the color wheel 1061 fixed thereto can rotate accordingly. The color wheel 1061 is coated with a wavelength conversion material, and the first light S10 can be converted into a third light S30 and reflected to the filter device 104. The filter device 104 is configured to transmit the first light S10 and the third light S30. . The filter device 104 is also used to transmit a second light ray S21 that has been converted and reflected by the light reflecting device 105. The second light S21 and the third light S30 form a mixed light and are output. The condensing lens 102a is disposed between the light source module 101 and the beam splitting device 103 for concentrating light emitted by the light source module 101. The first concentrating lens group 102b is disposed between the beam splitting device 103 and the light reflecting device 105 for Further, the second condensing lens group 102c is disposed between the color wheel module 106 and the filter device 104 for further concentrating light, and the first concentrating lens group 102b and the second concentrating lens group 102c each include three A condenser lens. The condensing lens 102a may be replaced by a condensing lens group, and the number of lenses of the first condensing lens group 102b and the second condensing lens group 102c may be increased or decreased according to actual needs.

The working principle of the light source device 1 is described as follows:

The first light S10 emitted by the light source module 101 is transmitted by the light splitting device 103 to the filter device 104, and further transmitted by the filter device 104 to the color wheel module 106, and the color wheel module 106 converts the wavelength of the first light S10. After forming a third light S30, and reflecting the third light S30 to the filter device 104, the filter device 104 then reflects the third light S30 to the light exit 107;

At the same time, the second light S20 emitted by the light source module 101 is reflected by the light splitting device 103 to the light reflecting device 105, and the polarization direction of the second light S20 is converted by the light reflecting device 105 to be consistent with the first light S10, and then reflected back to the light splitting device 103, and The light splitting device 103 and the filter device 104 are respectively transmitted to the light exit port 107, and are mixed with the third light beam S30 to form a mixed light.

In this embodiment, the light source module 101 is a laser module, and the first light S10 and the second light S20 are both blue lasers, and the polarization directions of the two are perpendicular to each other, and the first light S10 is p light. The second light S20 is s light. The spectroscopic device 103 is specifically a polarizing beam splitter that transmits blue p light and reflects blue s light. When the laser module emits blue p light and blue s light to the polarizing beam splitter, the blue p light is transmitted, blue. The color s light is reflected. After the blue p light is transmitted, it reaches the filter device 104. The filter device 104 is specifically a filter capable of transmitting blue light having a short wavelength and reflecting light having a long wavelength such as yellow light. When the blue p light is further transmitted by the filter, it is incident on the color wheel 1061 of the color wheel module 106. In this embodiment, the color wheel 1061 is a monochrome color wheel coated with a wavelength converting material, specifically a yellow phosphor, which converts blue light into yellow light. Therefore, when the blue p light is incident on the color wheel 1061, it becomes excitation light, and the phosphor on the excitation color wheel emits yellow emission light, that is, the third light S30 (yellow p light). The third light S30 (yellow p light) is reflected by the color wheel 1061 to the filter device 104. At this time, the wavelength of the third light S30 (yellow p light) is longer than the wavelength of the first light S10 (blue p light) (blue light) The wavelength range is 435-450 nm, and the wavelength of the yellow light is 577-597 nm. Therefore, the filter device 104 can reflect the third light S30 to the light exit 107.

The second light S20 (blue s light) is reflected by the spectroscopic device 103 and then incident on the light reflecting device 105. The reflecting device 105 is specifically an anti-blue ceramic sheet, and the second light S20 (blue s light) can be converted into the second light. The light S21 (blue p light) converts its polarization direction, the other spectral characteristics are unchanged, and reflects the second light S21 back to the spectroscopic device 103. At this time, since the polarization direction of the second light ray S21 coincides with the polarization direction of the first light ray S10, it can be transmitted to the filter device 104 by the spectroscopic device 103, and the filter device 104 can transmit blue light having a shorter wavelength, and thus will be further transmitted. The second light S21 is to the light exit 107. The merged second light S21 and the third light S30 form a mixed light (white light) and then output as an illumination light source from the light exit port 107.

2 is a schematic structural view of a monochrome color wheel of a first embodiment of a light source device according to the present invention. As shown in FIG. 2, when the color wheel 1061 is a monochrome color wheel, the two sets of blue light can be DC-illuminated, and the light source module 101 includes at least two lasers, and the power of each laser can be independently adjusted through independent adjustment. The magnitude of the current of the laser can adjust the laser power P1 of the first light S10 incident to the color wheel 1061 and the laser power P2 of the second light S20 incident to the light reflecting means 105. The different laser powers P1 excite the emitted light from the phosphor on the color wheel 1061, that is, the luminous flux Φ(P ₁ ) of the third light S30 is different. In the case where the wavelength at which the phosphor coated by the color wheel 1061 can be converted is determined, the spectral characteristics of the emitted light obtained by the blue excitation phosphor are also predictable, that is, the laser power P1 of the first light S10 and the color wheel 1061 are coated. The coated phosphor determines the color coordinate x(m)y(m) of the third ray S30. The laser power P2 also determines the luminous flux Φ(P ₂ ) of the blue light incident on the light exit 107, so that the spectral characteristics thereof can also be determined, that is, in the case where the laser power P2 of the second light S20 is determined, the second light S20 The color coordinate x(n)y(n) can also be determined. Then, the mixed light obtained by the final mixing, that is, the luminous flux Φ (W) of the white light and the color coordinate x (W) y (W) satisfy the following relationship:

Φ(W)=Φ(P ₁ )+Φ(P ₂ )

Wherein, W represents a mixed ray, m represents a first ray S10, n represents a second ray S20, P ₁ represents an excitation power of the first ray S10, P ₂ represents an excitation power of the second ray S20, and Φ (W) represents a mixed ray. The luminous flux, Φ(P ₁ ) represents the luminous flux of the first ray S10, Φ(P ₂ ) represents the luminous flux of the second ray S20, and x(m) and y(m) represent the abscissa of the color coordinate of the first ray S10. The ordinate, x(n) and y(n) represent the abscissa and the ordinate of the color coordinates of the second ray S20, and x(W) and y(W) represent the abscissa and the ordinate of the color coordinates of the mixed ray.

When any one of the luminous fluxes Φ(P ₁ ) and Φ(P ₂ ) changes, both the luminous flux and the color coordinates of the mixed ray change. Therefore, the purpose of adjusting the luminous flux of the mixed light can be achieved by adjusting the laser power of the first light S10 and the second light S20. When there is more blue light, the color temperature of the mixed light will be higher. On the contrary, the less the blue light, the lower the color temperature of the mixed light. The higher the laser power, the greater the luminous flux. Conversely, the lower the laser power, the smaller the luminous flux. Therefore, according to the actual demand for the light source, the laser powers of the first light S10 and the second light S20 can be adjusted to be the same or different to adjust the luminous flux and color temperature of the mixed light.

When the first light S10 and the second light S20 satisfy the following relationship, the purpose of preventing the Blu-ray is also achieved:

Wherein P ₁ represents the excitation power of the first ray S10, P ₂ represents the excitation power of the second ray S20, λ ₂ represents the spectral peak of the second ray S20, and λ ₃ represents the spectral peak of the third ray S30.

In this embodiment, the first light S10 and the second light S20 are both blue light, but the first light S10 may not be blue light, but other color lights. In this case, only the color wheel 1061 needs to be replaced according to the wavelength of the color light. The wavelength conversion material (phosphor) may be used, and the color light is used as the excitation light to excite the phosphor to generate the emitted light, and the wavelength of the incident light is smaller than the emitted light. Therefore, the wavelength of the color light as the first light S10 needs to be smaller than the third light. S30. For example, if the first light S10 is yellow light, then the yellow light as the excitation light and the emitted light after the phosphor is excited should be at least green light or red light, and the color wheel 1061 is required to adjust the wavelength conversion material to receive the yellow light to reflect the green light or Red light. Moreover, if the mixed light is white light, the S20 also needs to be adjusted accordingly to mix with the third light S30 to form white light.

Please refer to FIG. 3 , which is a structural diagram of a multi-color color wheel according to a first embodiment of the light source device of the present invention. The color wheel 1061 is a multi-color wheel. When the color wheel 1061 of the color wheel module is a multi-color color wheel, the color wheel 1061 divides different color regions according to different wavelength conversion materials. The first region coated phosphor can be excited by blue light to emit red light, the second region coated phosphor can be excited by blue light to emit green light, and the third region is not coated with phosphor, directly directing the first light S10 blue light. After the polarization direction is converted, the blue light of the first light S10 is reflected, that is, the p light of the first light S10 is converted into s light. Correspondingly, the filter device 104 is changed to a region-coated filter, and a portion of the region is for transmitting blue p-light having a shorter wavelength, reflecting red and green p-light having a longer wavelength converted by the color wheel, and a portion of the region is used for Reflects blue s light.

Please refer to FIG. 4, which is a diagram showing the relationship between the rotation angle of the multicolor color wheel and the laser current value in the first embodiment of the light source device of the present invention. As shown in FIG. 4, the rotation angle θ of the color wheel 1061 and the current A of the laser emitting the first light S10 satisfy the relationship in the drawing. Wherein, the red light segment C1 and the green light segment C2 are the time when the blue light of the first light S10 is excited by the phosphor in different regions of the color wheel 1061, that is, the time when the third light S30 is emitted, and the blue light segment C3 is the second light S21 or the first light. A time when a light S10 is incident on the blue light reflected on the third region Q3 of the color wheel 1061 or a combination of the two, whether the first light S10 and the second light S21 are combined, depending on the laser of the first light S10 and the second light S20 If it is turned on at the same time, if the laser emitting the first light S10 is not turned on, only the laser of the second light S20 is turned on, and the laser emitting the first light S10 and the second light S20 can also be turned on at the same time, according to the actual requirement of the luminous flux. Adjustment. When the color wheel 1061 rotates, the larger the area occupied by each color region, the longer the light is emitted. At the same time, the current A of the laser can also be adjusted to further control the length of time the laser is excited in each color region.

Based on the multi-color wheel, the luminous flux of each color region is Φ(i), i=1, 2, 3, 4..., i represents each color region. For example, 1 represents red light, 2 represents green light, 3 represents blue light reflected by the first light S10 on the third region Q3 of the color wheel 1061, and 4 represents blue light of the second light S21. x(i) and y(i) represent the color coordinates of the emitted light after each color region is excited. Then the luminous flux Φ(W) and the color coordinates x(i) and y(i) of the mixed light satisfy the following relationship:

Wherein W represents a mixed ray, i represents each third ray S30 having a different wavelength, i=1, 2, 3, 4..., Φ(W) represents the luminous flux of the mixed ray, and x(W) and y(W) represent The abscissa and the ordinate of the color coordinates of the mixed rays, Φ(i) represents the luminous flux of each of the third rays S30, and x(i) and y(i) represent the color abscissa and color of each of the third rays S30. coordinate.

The laser of the light source module 101 can be pulse-modulated, so that the luminous flux of the excitation light of the first light S10 incident on each color region can be independently adjusted. In this embodiment, the second light S21 can further assist the adjustment of the mixed light. Luminous flux. According to the above relationship, changing the luminous flux of any color light will eventually affect the luminous flux and color coordinates of the mixed light. Therefore, it is more convenient and simple to adjust the white light flux and color coordinates.

Please refer to FIG. 5, which is a schematic structural view of a second embodiment of a light source device according to the present invention. As shown in FIG. 5, the present embodiment is different from the first embodiment in that the light source device 1 of the present embodiment includes a light source module 101, a collecting lens 102a, a first collecting lens group 102b, and a second collecting lens. The group 102c, the light splitting device 103, the light reflecting device 105, and the color wheel module 106.

The light source module 101 is configured to emit first light S10 and second light S20 having different polarization directions. The light splitting device 103 includes a first area and a second area, and the first area can be used to reflect the first light S10 and transmit the second light S20. The light reflecting device 105 can receive the second light ray S20 transmitted by the light splitting device 103 and convert the polarization direction of the second light ray S20 into a direction that is opposite to the polarization direction of the first light ray S10 (becomes the second light ray S21) and is reflected to the spectroscopic device 103. The first area is reflected by the first area of the spectroscopic device 103 to the light exit port. The color wheel module 106 includes a color wheel 1061 and a rotating shaft 1062. As the rotating shaft 1062 rotates, the color wheel 1061 fixed thereto can rotate accordingly. The color wheel 1061 is coated with a wavelength conversion material, and the first light S10 can be converted into the third light S30 and reflected to the second region of the spectroscopic device 103 and transmitted to the light exit port 107. The second light S21 and the third light S30 merged at the light exit 107 are mixed to form a mixed light, and then output. The condensing lens 102a is disposed between the light source module 101 and the beam splitting device 103 for concentrating light emitted by the light source module 101. The first concentrating lens group 102b is disposed between the beam splitting device 103 and the light reflecting device 105 for Further, the second condensing lens group 102c is disposed between the color wheel module 106 and the spectroscopic device 103 for further concentrating light, and the first concentrating lens group 102b and the second concentrating lens group 102c each include three Condenser lens. The condensing lens 102a may be replaced by a condensing lens group, and the number of lenses of the first condensing lens group 102b and the second condensing lens group 102c may be increased or decreased according to actual needs.

The working principle of the light source device 1 is described as follows:

The first light S10 emitted by the light source module 101 is reflected by the first region of the light splitting device 103 to the color wheel module 106. The color wheel module 106 converts the wavelength of the first light S10 to form a third light S30, and reflects The third light S30 is sent to the second region of the light splitting device 103, and the second region of the light splitting device 103 is further transmitted through the third light S30 to the light exit port 107.

At the same time, the second light ray S20 emitted by the light source module 101 is transmitted to the light reflecting device 105 by the light splitting device 103, and the polarization direction of the second light ray S20 is converted by the light reflecting device 105 into the light ray S10, and then reflected back to the light splitting device 103. The first region is reflected by the spectroscopic device 103 to the light exit 107, and is mixed with the third light S30 to form a mixed light.

In this embodiment, the light source module 101 is a laser module, and the first light S10 and the second light S20 are both blue lasers, and the polarization directions of the two are perpendicular to each other, and the first light S10 is p light. The second light S20 is s light. The spectroscopic device 103 is specifically a polarizing beam splitter. The first region can transmit s light and reflect p light. The second region can reflect light of a shorter wavelength and transmit longer wavelength light. When the laser module emits the first light S10 and the first After the two rays S20 to the polarizing beam splitter, the first light S10 (blue p light) is reflected, and the second light S20 (blue light light) is transmitted.

The first light S10 (blue p light) is reflected by the first region of the light splitting device 103 and reaches the color wheel 1061 of the color wheel module 106. In this embodiment, the color wheel 1061 is a monochrome color wheel coated with a wavelength converting material, specifically a yellow phosphor, which converts blue light into yellow light. Therefore, when the first light S10 is incident on the color wheel 1061, it becomes excitation light, and the phosphor on the excitation color wheel emits yellow emission light to form a third light S30 (yellow p light). The third light S30 (yellow p light) is reflected by the color wheel 1061 to the second region of the spectroscopic device 103. At this time, the third light S30 has a longer wavelength (the wavelength range of the blue light is 435-450 nm, and the wavelength range of the yellow light is 577-597 nm), therefore, the spectroscopic device 103 can transmit the third light S30 to the light exit 107. After the second light ray S20 is transmitted by the first region of the light splitting device 103, it is incident on the light reflecting device 105. The light reflecting device 105 is specifically an anti-blue ceramic piece, and can convert the second light S20 (blue s light) into the second light S21. (blue p light), that is, its polarization direction is converted, other spectral characteristics are unchanged, and the second light ray S21 is reflected back to the first region of the spectroscopic device 103. At this time, since the polarization direction of the second light ray S21 coincides with the polarization direction of the first light ray S10, it can be reflected by the first region of the spectroscopic device 103 to the light exit port 107. Finally, the second light S21 (blue p light) and the third light S30 (yellow p light) are mixed to form a mixed light (white light), and then output as an illumination light source from the light exit port 107.

In this embodiment, the monochrome color wheel can be replaced with a multi-color color wheel, and the adjustment of the luminous flux of the monochrome color wheel and the multi-color color wheel is the same as that of the first embodiment, and details are not described herein again.

Please refer to FIG. 6, which is a schematic structural view of a third embodiment of a light source device according to the present invention. As shown in FIG. 6 , the present embodiment is different from the first embodiment in that the light source device 1 of the embodiment includes a light source module 101 , a light splitting device 103 , a light reflecting device 105 , a color wheel module 106 , a filter device , and The reflecting device, the collecting lens 102a, the first collecting lens group 102b, and the second collecting lens group 102c.

The light source module 101 is configured to emit first light S10 and second light S20 having different polarization directions. The light splitting device 103 is configured to reflect the first light S10, transmit the second light S20, and the light reflecting device 105 to receive the second light S20 and convert the polarization direction of the second light S20 to be consistent with the polarization direction of the first light S10 ( The second light S21) is reflected to the light splitting device 103; the color wheel module 106 is configured to convert the first light S10 into the third light S30 and reflect to the first filter device 108a; the first filter device 108a to transmit a light S10, reflecting the third light S30; the second filter 108b, for transmitting the third light S30, reflecting the second light S21 after converting the polarization direction; the reflecting device comprises a first reflecting device 109a, a second reflecting device 109b, The first reflecting means 109a is for reflecting the third light S30 to the second filtering means 108b, and the second reflecting means 109b is for reflecting the second light S21 to the second filtering means 108b. The first collecting lens group 102b is disposed between the spectroscopic device 103 and the reflecting device 105 for further concentrating light, and the second collecting lens group 102c is disposed between the color wheel module 106 and the spectroscopic device 103 for further convergence. The light, the first condensing lens group 102b and the second condensing lens group 102c each include three condensing lenses. The condensing lens 102a may be replaced by a condensing lens group, and the number of lenses of the first condensing lens group 102b and the second condensing lens group 102c may be increased or decreased according to actual needs. The color wheel module 106 includes a color wheel 1061 and a rotating shaft 1062. As the rotating shaft 1062 rotates, the color wheel 1061 fixed thereto can rotate accordingly. The color wheel 1061 is coated with a wavelength converting material, and the first light S10 can be converted into the third light S30 and reflected to the spectroscopic device 103. The second merged second light S21 and the third light S30 are mixed to form a mixed light and output.

The working principle of the light source device 1 is described as follows:

The first light S10 emitted by the light source module 101 is reflected by the light splitting device 103 to the first filter device 108a, and then transmitted by the first filter device 108a to the color wheel module 106. The color wheel module 106 will be the first light S10. After the wavelength conversion, a third light ray S30 is formed (the wavelength of the third light ray S30 is greater than the first light ray S10), and the third light ray S30 is reflected to the first filter device 108a, and the third light ray S30 is reflected by the first filter device 108a. The first reflecting means 109a, the first reflecting means 109a reflects the third light S30 to the second filtering means 108b, and the second filtering means 108b transmits the third light S30 to the light exiting port 107.

At the same time, the second light S20 emitted by the light source module 101 is transmitted to the light reflecting device 105 by the light splitting device 103, and the polarization direction of the second light S20 is converted by the light reflecting device 105 to be consistent with the first light S10 (converted into the second light S21). ) is reflected back to the spectroscopic device 103 and reflected by the spectroscopic device 103 to the second reflecting device 109b, and then the second reflecting device 109b reflects the second light S21 to the second filtering device 108b, and the second filtering device 108b The second light S21 is reflected to the light exit 107 and mixed with the third light S30 to form a mixed light.

In this embodiment, the light source module 101 is a laser module, and the first light S10 and the second light S20 are both blue lasers, and the polarization directions of the two are perpendicular to each other, and the first light S10 is p light. The second light S20 is s light. The light splitting device 103 is specifically a polarizing beam splitter that transmits s light and reflects p light. When the laser module emits the first light S10 and the second light S20 to the polarizing beam splitter, the first light S10 (blue p light) is reflected. The second light S20 (blue s light) is transmitted. The first filter device 108a can transmit light of a shorter wavelength, such as blue light, and transmits light of a longer wavelength, such as yellow light; the second filter device 108b is opposite to the first filter device 108a, and can transmit a longer wavelength. Light, such as yellow light, reflects light of shorter wavelengths, such as blue light. The first reflecting means 109a and the second reflecting means 109b are total reflection mirrors and can reflect any light received.

The first light ray S10 is reflected by the spectroscopic device 103 and reaches the first filter device 108a. The first light S10 (blue p light) is incident on the color wheel 1061 of the color wheel module 106 through the first filter device 108a. In this embodiment, the color wheel 1061 is a monochrome color wheel coated with a wavelength converting material, specifically a yellow phosphor, which converts blue light into yellow light. Therefore, when the first light S10 is incident on the color wheel 1061, it becomes excitation light, and the phosphor on the excitation color wheel emits yellow emission light to form a third light S30 (yellow p light). The third light ray S30 (yellow p light) has a longer wavelength. Therefore, the third light ray S30 is reflected by the color wheel 1061 to the first filter device 108a and then reflected to the first reflecting device 109a. In this embodiment, the reflecting device As a total reflection mirror, the total reflection mirror reflects the third light S30 to the second filter device 108b, and because of its longer wavelength, it can be transmitted to the light exit port 107 by the second filter device 108b.

At the same time, the second light S20 is transmitted by the spectroscopic device 103 and then incident on the light reflecting device 105. The reflecting device 105 is specifically an anti-blue ceramic sheet, and can convert the second light S20 (blue s light) into the second light S21 (blue). The color p light) converts its polarization direction, the other spectral characteristics are unchanged, and reflects the second light ray S21 back to the spectroscopic device 103. At this time, since the polarization direction of the second light ray S21 coincides with the polarization direction of the first light ray S10, it can be reflected by the spectroscopic device 103 to the second reflecting device 109b, and the second reflecting device 109b reflects the second ray S21 to the second filter. In the optical device 108b, since the second filter device 108b can reflect light of a shorter wavelength, the second light S21 (blue s light) is reflected to the light exit 107, and mixed with the third light S30 to form mixed light (white light). The illumination source is output from the light exit port 107.

Please refer to FIG. 7, which is a schematic structural view of a projection apparatus of the present invention. The light source device 1 of the present invention can be used for a projection device as well as for a lighting device. The projection device 2 includes the above-mentioned light source device 1. The other devices and functions of the projection device 2 are the same as those of the existing projection device, and are not described herein again.

The light source device of the present invention divides the light source module into a first light and a second light, so that the first light is used to excite the wavelength conversion material to form other color lights, and the second light is mixed as the compensation light and the first light to form a mixture. The light, by adjusting the excitation power of the first light and/or the second light, achieves the purpose of adjusting the luminous flux and color temperature of the mixed light, and solves the problem that the luminous flux and the color temperature of the current mixed white light cannot be adjusted.

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 transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A light source device, comprising: a light source module, a light splitting device, a filter device, a reflective device, and a color wheel module; wherein

The light source module emits a first light and a second light having different polarization directions, and the first light and the second light have the same or different emission power;

The light splitting device transmits the first light to reflect the second light;

The light reflecting device receives the second light and converts a polarization direction of the second light into a direction opposite to a polarization direction of the first light, and then reflects the light to the light splitting device;

The color wheel module to convert the first light into a third light and to reflect the filter device;

The filter device transmits the first light, reflects the third light, and transmits the second light that is converted and reflected by the light reflecting device;

The second ray and the third ray, which have been converted in a polarization direction, form a mixed ray and are output.
The light source device according to claim 1, wherein a polarization direction of the first light is perpendicular to a polarization direction of the second light; and a wavelength of the first light is greater than or equal to a wavelength of the second light.
The light source device according to claim 1, wherein the color wheel of the color wheel module is a monochrome color wheel or a multicolor color wheel, and the color wheel comprises a wavelength converting material to convert the first light For the third light, the wavelength of the first light is less than the wavelength of the third light.
The light source device according to claim 3, wherein when the color wheel module is a monochrome color wheel, the luminous flux of the mixed light output by the filter device satisfies the following relationship:

Φ(W)=Φ(P 1 )+Φ(P 2 )

Wherein W represents the mixed ray, m represents the first ray, n represents the second ray, P 1 represents the excitation power of the first ray, and P 2 represents the excitation power of the second ray, Φ (W) represents the luminous flux of the mixed ray, Φ(P 1 ) represents the luminous flux of the first ray, Φ(P 2 ) represents the luminous flux of the second ray, and x(m) and y(m) represent The abscissa and the ordinate of the color coordinates of the first ray, x(n) and y(n) represent the abscissa and ordinate of the color coordinates of the second ray, and x(W) and y(W) represent The abscissa and ordinate of the color coordinates of the mixed rays.
The light source device according to claim 3, wherein when the color wheel module is a multi-color color wheel, the color wheel module reflects a plurality of the third rays of different wavelengths, the filtering The luminous flux of the mixed light output by the device satisfies the following formula:

Wherein W represents the mixed ray, i represents each of the third rays of different wavelengths, i=1, 2, 3, 4..., Φ(W) represents the luminous flux of the mixed ray, x(W) and y(W) represents the abscissa and ordinate of the color coordinates of the mixed ray, Φ(i) represents the luminous flux of each of the third rays, and x(i) and y(i) represent each of the third The abscissa and ordinate of the color coordinates of the ray.
The light source device according to claim 1, wherein said light source module comprises at least a first laser and said second laser, said first laser emitting said first light, said second laser emitting said first The two rays are such that the emission powers of the first light and the second light are the same or different.
The light source device according to claim 6, wherein the first light and the third light satisfy the following relationship:

Wherein P 1 represents the excitation power of the first light, P 2 represents the excitation power of the second light, λ 2 represents the spectral peak of the second light, and λ 3 represents the spectral peak of the third light.
The light source device according to claim 1, wherein the light source device further comprises a control module for controlling and adjusting the opening and closing, the transmitting power, and the current of the first light and the second light.
A light source device, comprising: a light source module, a light splitting device, a reflective device, and a color wheel module; wherein

The light source module emits a first light and a second light having different polarization directions, and the first light and the second light have the same or different emission power;

The light splitting device includes a first area that reflects the first light and transmits the second light, and a second area that transmits the third light;

The color wheel module converts the first light into a third light and reflects to a second region of the light splitting device;

The light reflecting device receives the second light and converts a polarization direction of the second light into a first region of the light splitting device after being consistent with a polarization direction of the first light;

The second ray and the third ray, which have been converted in a polarization direction, form a mixed ray and are output.
The light source device according to claim 9, wherein the wavelength of the first light is greater than or equal to the wavelength of the second light; the polarization direction of the first light is perpendicular to the polarization direction of the second light; The color wheel of the color wheel module is a monochrome color wheel or a multi-color color wheel, the color wheel includes a wavelength conversion material to convert the first light into a third light, and the wavelength of the first light is smaller than The wavelength of the third light.
The light source device according to claim 9, wherein said light source module comprises at least a first laser and said second laser, said first laser emitting said first light, said second laser emitting said first Two rays, such that the emission powers of the first light and the second light are different.
The light source device according to claim 9, wherein the light source device further comprises a control module to control and adjust the on-off, the emission power, and the current of the first light and the second light.
A light source device, comprising: a light source module, a light splitting device, a light reflecting device, a color wheel module, a reflecting device, and a filtering device; wherein the filtering device comprises a first filter device and a second filter An optical device; the reflective device comprising a first reflecting device and a second reflecting device.

The light source module emits a first light and a second light having different polarization directions, and the first light and the second light have the same or different emission power;

The light splitting device is configured to reflect the first light and transmit the second light;

The color wheel module converts the first light into a third light and reflects to the first filter;

The light reflecting device receives the second light and converts a polarization direction of the second light into a direction opposite to a polarization direction of the first light, and then reflects the light to the light splitting device;

The first filter device transmits the first light to reflect the third light;

The second filter device transmits the third light and reflects a second light that is consistent with the polarization direction of the first light;

The anti-first reflecting means for reflecting the third light reflected by the first filtering means to the second filtering means; the second reflecting means for reflecting the second reflection of the light separating means Light to the second filter device;

The second ray and the third ray, which have been converted in a polarization direction, form a mixed ray and are output.
The light source device according to claim 13, wherein the wavelength of the first light is greater than or equal to the wavelength of the second light; the polarization direction of the first light is perpendicular to the polarization direction of the second light; The color wheel of the color wheel module is a monochrome color wheel or a multi-color color wheel, the color wheel includes a wavelength conversion material to convert the first light into a third light, and the wavelength of the first light is smaller than The wavelength of the third light.
The light source device according to claim 13, wherein said light source module comprises at least a first laser and said second laser, said first laser emitting said first light, said second laser emitting said first Two rays, such that the emission powers of the first light and the second light are different.
The light source device according to claim 13, wherein the light source device further comprises a control module for controlling and adjusting the opening and closing, the transmitting power, and the current of the first light and the second light.
A projection apparatus comprising the light source device according to any one of claims 1 to 16.