CN110133949A - Light source device and projection device having the same - Google Patents

Abstract

The invention discloses a light source device and a projection device with the light source device. The light source device comprises a light source module, which emits first light and second light; a light splitting device, which transmits the first light and reflects the second light; Receive the second light and reflect it to the light splitting device; the color wheel module converts the first light into the third light and reflects it to the filter device; the filter device transmits the first light, reflects the third light, and transmits the light through the reflection device The polarization direction is converted and the reflected second light; the second light and the third light are mixed and output, so as to realize the purpose of flexibly adjusting 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 light source device.

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, after a single laser excites the color wheel, the luminous flux and color temperature of the white light formed by mixing cannot be adjusted, and the output white light is single, which cannot meet the needs of use in various scenarios.

SUMMARY OF THE INVENTION

The present invention mainly provides a light source device and a projection device having the light source device, aiming at solving the problems that the luminous flux and color temperature of the mixed white light cannot be adjusted at present.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is to provide a light source device, including: a light source module, a light splitting device, a filter device, a light reflection device, and a color wheel module; wherein,

The light source module emits first light and second light with different polarization directions, and the emission power of the first light and the second light is the same or different;

the spectroscopic device, to transmit the first light and reflect the second light;

the light-reflecting device to receive the second light and convert the polarization direction of the second light to be consistent with the polarization direction of the first light and then reflect it to the light splitting device;

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

the filter device is configured to transmit the first light, reflect the third light, and transmit the second light whose polarization direction is converted and reflected by the light-reflecting device;

The second light and the third light whose polarization directions are converted form a mixed light output.

In order to solve the above-mentioned technical problems, another technical solution adopted by the present invention is to provide 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 first light and second light with different polarization directions, and the emission power of the first light and the second light is the same or different;

The spectroscopic device includes a first area and a second area, the first area is used to reflect the first light and transmit the second light; the second area is used to transmit the third light;

the color wheel module to convert the first light into a third light and reflect it to the light splitting device;

the light-reflecting device to receive the second light and convert the polarization direction of the second light to be consistent with the polarization direction of the first light and then reflect it to the light splitting device;

The second light and the third light whose polarization directions are converted form a mixed light output.

In order to solve the above technical problems, 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 reflection device, a color wheel module, a reflection device, and a filter device; The filter device includes a first filter device and a second filter device; the reflection device includes a first reflection device and a second reflection device.

The light source module emits first light and second light with different polarization directions, and the emission power of the first light and the second light is the same or different;

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

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

the light-reflecting device to receive the second light and convert the polarization direction of the second light to be consistent with the polarization direction of the first light and then reflect it to the light splitting device;

the first filter device to transmit the first light and reflect the third light;

the second filter device for transmitting the third light and reflecting the second light whose polarization direction is consistent with the first light;

The anti-first reflection device is used to reflect the third light reflected by the first filter device to the second filter device; the second reflection device is used to reflect the second light reflected by the light splitting device. light to the second filter device;

The second light and the third light whose polarization directions are converted form a mixed light output.

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

The light source device of the present invention divides the light source module into a first light ray and a second light ray, so that the first light ray is used to excite the wavelength conversion material to form other color lights, and the second light ray is mixed with the first light ray as a compensation light to form a mixed light 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, which solves the problem that the luminous flux and color temperature of the mixed white light cannot be adjusted at present.

Description of drawings

1 is a schematic structural diagram of a first embodiment of a light source device of the present invention;

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

3 is a schematic structural diagram of a multi-color color wheel according to the first embodiment of the light source device of the present invention;

4 is a graph showing the relationship between the rotation angle of the multi-color color wheel and the laser current value according to the first embodiment of the light source device of the present invention;

5 is a schematic structural diagram of a second embodiment of a light source device of the present invention;

6 is a schematic structural diagram of a third embodiment of a light source device of the present invention;

FIG. 7 is a schematic structural diagram of the projection apparatus of the present invention.

Detailed ways

Please refer to FIG. 1 , which is a schematic structural diagram of a first embodiment of a light source device of the present invention. As shown in FIG. 1 , the light source device 1 of this embodiment includes a light source module 101, a condenser lens 102a, a first condenser lens group 102b, a second condenser lens group 102c, a light splitting device 103, a filter device 104, and a reflection device 105 and the color wheel module 106.

The light source module 101 is used for emitting first light S10 and second light S20 with 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 light splitting device 103 can transmit the first light S10 and reflect the second light S20. The light reflecting device 105 can receive the second light S20 reflected by the light splitting device 103 and convert the polarization direction of the second light S20 to be consistent with the polarization direction of the first light S10 and then reflect it to the light splitting 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 thereon can rotate accordingly. The color wheel 1061 is coated with a wavelength conversion material, which can convert the first light S10 into a third light S30 and reflect it to the filter device 104; the filter device 104 is used for transmitting the first light S10 and reflecting the third light S30 . The filter device 104 is also used to transmit the second light S21 whose polarization direction is converted and reflected by the reflector 105 . The second light S21 and the third light S30 form a mixed light and then output. The condensing lens 102a is arranged between the light source module 101 and the light splitting device 103, and is used for condensing the light emitted by the light source module 101; the first condenser lens group 102b is arranged between the light splitting device 103 and the reflective device 105, and is used To further condense the light, the second condensing lens group 102c is disposed between the color wheel module 106 and the filter device 104 for further condensing the light. The first condensing lens group 102b and the second condensing lens group 102c both include three a condenser lens. The condensing lens 102a can also be replaced with a condensing lens group, and the number of lenses of the first condensing lens group 102b and the second condensing lens group 102c can also be increased or decreased according to actual requirements.

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

After the first light S10 emitted by the light source module 101 is transmitted by the light splitting device 103 to the filter device 104, it is 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 Then, the third light S30 is formed, and the third light S30 is reflected to the filter device 104, and the filter device 104 then reflects the third light S30 to the light outlet 107;

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

In this embodiment, the light source module 101 is a laser module, the emitted first light S10 and the second light S20 are both blue lasers, and their polarization directions are perpendicular to each other, the first light S10 is p light, The two rays S20 are s rays. The spectroscopic device 103 is specifically a polarizing beam splitter, which can transmit blue p light and reflect 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 and the blue 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, which can transmit blue light with a shorter wavelength and reflect light with a longer wavelength, such as yellow light. After 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 implementation, the color wheel 1061 is a monochromatic color wheel, which is coated with a wavelength conversion material, specifically a yellow phosphor, which can convert 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 to the filter device 104 by the color wheel 1061. At this time, the wavelength of the third light S30 (yellow p light) is longer than that of the first light S10 (blue p light) (blue light). The wavelength range of the yellow light is 435-450 nm, and the wavelength range of the yellow light is 577-597 nm). Therefore, the filter device 104 can reflect the third light S30 to the light outlet 107 .

After the second light S20 (blue s light) is reflected by 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 sheet, which can convert the second light S20 (blue s light) into a second light S20 (blue s light) The light S21 (blue p light), that is, its polarization direction is converted, and other spectral characteristics remain unchanged, and the second light S21 is reflected back to the spectroscopic device 103 . At this time, because the polarization direction of the second light ray S21 is consistent with the polarization direction of the first light ray S10, it can be transmitted by the spectroscope device 103 to the filter device 104, and the filter device 104 can transmit blue light with a shorter wavelength, so it will further transmit The second light beam S21 reaches the light outlet 107 . The combined second light ray S21 and the third light ray S30 form a mixed light ray (white light) and then become an illumination light source and output from the light outlet 107 .

Please refer to FIG. 2 , which is a schematic structural diagram of the monochromatic color wheel according to the first embodiment of the light source device of the present invention. As shown in FIG. 2 , when the color wheel 1061 is a monochromatic color wheel, the two sets of blue light can be lit by direct current. The light source module 101 includes at least two lasers, and the power of each laser can be adjusted independently. The current of the laser can adjust the laser power P1 of the first light beam S10 incident on the color wheel 1061 and the laser power P2 of the second light beam S20 incident on the light-reflecting device 105 . The emitted light obtained by exciting the phosphors on the color wheel 1061 with different laser powers P1, that is, the luminous flux Φ(P ₁ ) of the third light ray S30 is different. Under the condition that the wavelength that can be converted by the phosphor coated by the color wheel 1061 is determined, the spectral characteristics of the emitted light obtained by exciting the phosphor with blue light are also predictable, that is, the laser power P1 of the first light S10 and the color wheel 1061 coated on the laser power P1 The coated phosphor determines the color coordinate x(m)y(m) of the third light ray S30. The laser power P2 also determines the luminous flux Φ(P ₂ ) of the blue light incident on the light outlet 107, so its spectral characteristics can also be determined, that is, when the laser power P2 of the second light ray S20 is determined, the second light ray S20 The color coordinates x(n)y(n) can also be determined. Then the mixed light obtained by final mixing, that is, the luminous flux Φ(W) of white light and the color coordinate x(W)y(W) satisfy the following relationship:

Φ(W)=Φ(P ₁ )+Φ(P ₂ )

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

When any one of the luminous flux Φ(P ₁ ) and Φ(P ₂ ) changes, both the luminous flux and the color coordinate of the mixed light will 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, and conversely, the less blue light, the lower the color temperature of the mixed light. The higher the laser power, the greater the luminous flux, on the contrary, 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, so as 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 blue light glare can also be achieved:

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

In this embodiment, both the first light ray S10 and the second light ray S20 are blue light. However, the first light ray S10 may not be blue light, but other color light. In this case, it is only necessary to replace the light coated on the color wheel 1061 according to the wavelength of the color light. The wavelength conversion material (phosphor) can be used, because the color light is used as the excitation light to excite the phosphor to generate emission light, and the wavelength of the incident light needs to be smaller than the emission light. Therefore, when the color light is used as the first light S10, its wavelength needs to be smaller than the third light. S30. For example, if the first light S10 is yellow light, then the emitted light after the yellow light is used as the excitation light to excite the phosphor should be at least green light or red light, and the color wheel 1061 needs to adjust the wavelength conversion material to receive the yellow light and reflect the green light or the red light. red light. Moreover, if the mixed light is white light, S20 also needs to be adjusted accordingly, so as to be mixed with the third light S30 to form white light.

Please refer to FIG. 3 , which is a schematic diagram of the structure of the multi-color color wheel according to the first embodiment of the light source device of the present invention. The color wheel 1061 is a multi-color color wheel. When the color wheel 1061 of the color wheel module is a multi-color color wheel, the color wheel 1061 is divided into different color regions according to different wavelength conversion materials. The phosphor coated in the first area can be excited by blue light to produce red light, the phosphor coated in the second area can be excited by blue light to produce green light, and the third area is not coated with phosphor, and the blue light of the first light S10 is directly converted into After the polarization direction is converted, the blue light of the first light ray S10 is reflected, that is, the p light of the first light ray S10 is converted into s light. Correspondingly, the filter device 104 is changed to an area-coated filter, and a part of the area is used to transmit blue p light with a shorter wavelength and reflect the longer wavelength red and green p light converted by the color wheel, and a part of the area 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 multi-color color wheel and the laser current value according to 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 figure. The red light segment C1 and the green light segment C2 are the time when the blue light of the first light S10 excites phosphors in different areas on 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 third light S30. When a light ray S10 is incident on the blue light reflected on the third area Q3 of the color wheel 1061 or the combination of the two, whether the first light ray S10 and the second light ray S21 are combined depends on the lasers of the first light ray S10 and the second light ray S20 Whether to turn on at the same time, if the laser that emits the first light S10 is not turned on, only the laser of the second light S20 is turned on, and the lasers that emit the first light S10 and the second light S20 can also be turned on at the same time. Adjustment. When the color wheel 1061 rotates, the larger the area occupied by each color region, the longer the light emission time. 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 color wheel, the luminous flux of each color area is Φ(i), i=1, 2, 3, 4..., i represents each color area. For example, 1 represents red light, 2 represents green light, 3 represents the blue light reflected by the first light ray S10 incident on the third area Q3 of the color wheel 1061, and 4 represents the blue light of the second light ray 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) of the mixed light and the color coordinates x(i) and y(i) satisfy the following relationship:

Among them, W represents the mixed light, i represents each third light S30 with different wavelengths, i=1,2,3,4..., Φ(W) represents the luminous flux of the mixed light, x(W) and y(W) represent The abscissa and ordinate of the color coordinate of the mixed light, Φ(i) represents the luminous flux of each third ray S30, x(i) and y(i) represent the color abscissa and color ordinate of each third ray S30 coordinate.

The laser of the light source module 101 can be pulse modulated, so the luminous flux of the excitation light of the first light beam S10 incident in each color region can be independently adjusted, and in this embodiment, the second light beam S21 can further assist in adjusting the mixed light beam. 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 luminous flux and color coordinates of the white light.

Please refer to FIG. 5 , which is a schematic structural diagram of the second embodiment of the light source device of the present invention. As shown in FIG. 5 , the difference between this embodiment and the first embodiment is that the light source device 1 of this embodiment includes a light source module 101 , a condensing lens 102 a , a first condensing lens group 102 b , and a second condensing lens The group 102c, the light splitting device 103, the reflective device 105 and the color wheel module 106.

The light source module 101 is used for emitting first light S10 and second light S20 with 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 S20 transmitted by the light splitting device 103 and convert the polarization direction of the second light S20 to be consistent with the polarization direction of the first light S10 (become the second light S21) and reflect it to the light splitting device 103. The first area, and the second light S21 is reflected to the light outlet by the first area of the light splitting 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 thereon can rotate accordingly. The color wheel 1061 is coated with a wavelength conversion material, which can convert the first light S10 into a third light S30 , which is reflected to the second area of the light splitting device 103 and transmitted to the light outlet 107 . The second light ray S21 and the third light ray S30 merged at the light outlet 107 are mixed to form a mixed light ray and then output. The condensing lens 102a is arranged between the light source module 101 and the light splitting device 103, and is used for condensing the light emitted by the light source module 101; the first condenser lens group 102b is arranged between the light splitting device 103 and the reflective device 105, and is used To further condense the light, the second condensing lens group 102c is disposed between the color wheel module 106 and the light splitting device 103 for further condensing the light. The first condensing lens group 102b and the second condensing lens group 102c each include three condenser lens. The condensing lens 102a can also be replaced with a condensing lens group, and the number of lenses of the first condensing lens group 102b and the second condensing lens group 102c can also be increased or decreased according to actual requirements.

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 area of the light splitting device 103 to the color wheel module 106, and 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. The three light rays S30 reach the second region of the light splitting device 103 , and the second region of the light splitting device 103 transmits the third light ray S30 to the light outlet 107 .

At the same time, the second light beam S20 emitted by the light source module 101 is transmitted by the light splitting device 103 to the light reflecting device 105 . The first region is reflected by the light splitting device 103 to the light outlet 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, the emitted first light S10 and the second light S20 are both blue lasers, and their polarization directions are perpendicular to each other, the first light S10 is p light, The two rays S20 are s rays. The spectroscopic device 103 is specifically a polarizing beam splitter, the first region can transmit s light and reflect p light, and the second region can reflect light with shorter wavelength and transmit light with longer wavelength, when the laser module emits the first light S10 and the second light After the two light beams S20 reach the polarizing beam splitter, the first light beam S10 (blue p light) is reflected, and the second light beam S20 (blue s light) is transmitted.

The first light S10 (blue p light) reaches the color wheel 1061 of the color wheel module 106 after being reflected by the first region of the light splitting device 103 . In this implementation, the color wheel 1061 is a monochromatic color wheel, which is coated with a wavelength conversion material, specifically a yellow phosphor, which can convert blue light into yellow light. Therefore, when the first light ray S10 is incident on the color wheel 1061, it becomes the excitation light, and the phosphor on the excited color wheel emits yellow emission light to form the third light ray S30 (yellow p light). The third light S30 (yellow p light) is reflected by the color wheel 1061 to the second area of the spectroscopic device 103. At this time, the third light S30 has a longer wavelength (the wavelength range of blue light is 435-450 nm, and the wavelength range of yellow light is 577-597 nm), therefore, the light splitting device 103 can transmit the third light S30 to the light outlet 107 . After the second light beam S20 is transmitted by the first area of the light splitting device 103, it is incident on the reflective device 105. The reflective device 105 is specifically an anti-blue ceramic sheet, which can convert the second light ray S20 (blue s light) into the second light ray S21 (blue p light), that is, its polarization direction is switched, other spectral characteristics remain unchanged, and the second light S21 is reflected back to the first region of the light splitting device 103 . At this time, because the polarization direction of the second light beam S21 is consistent with the polarization direction of the first light beam S10 , it can be reflected to the light exit port 107 by the first region of the spectroscopic device 103 . 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 become an illumination light source and output from the light outlet 107 .

In this embodiment, the single-color color wheel can be replaced with a multi-color color wheel, and the adjustment of the luminous flux of the single-color color wheel and the multi-color color wheel is the same as that in the first embodiment, and will not be repeated here.

Please refer to FIG. 6 , which is a schematic structural diagram of a third embodiment of a light source device of the present invention. As shown in FIG. 6 , the difference between this embodiment and the first embodiment is that the light source device 1 of this embodiment includes a light source module 101 , a light splitting device 103 , a reflective device 105 , a color wheel module 106 , a filter device, A reflection device, a condenser lens 102a, a first condenser lens group 102b, and a second condenser lens group 102c.

The light source module 101 is used for emitting first light S10 and second light S20 with different polarization directions. The spectroscopic device 103 is used to reflect the first light S10, transmit the second light S20, and the reflective device 105 is 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 beam splitting device 103; the color wheel module 106 is used to convert the first light S10 into a third light S30 and reflected to the first filter device 108a; the first filter device 108a is used to transmit the first light S10. A light ray S10 reflects the third light ray S30; the second filter device 108b transmits the third light ray S30 and reflects the second light ray S21 after the polarization direction has been converted; the reflecting device includes a first reflecting device 109a and a second reflecting device 109b, The first reflection device 109a is used to reflect the third light S30 to the second filter device 108b, and the second reflection device 109b is used to reflect the second light S21 to the second filter device 108b. The first condensing lens group 102b is disposed between the light splitting device 103 and the light reflecting device 105 for further condensing light, and the second condensing lens group 102c is disposed between the color wheel module 106 and the light splitting device 103 for further condensing For light, the first condenser lens group 102b and the second condenser lens group 102c each include three condenser lenses. The condensing lens 102a can also be replaced with a condensing lens group, and the number of lenses of the first condensing lens group 102b and the second condensing lens group 102c can also be increased or decreased according to actual requirements. 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 thereon can rotate accordingly. The color wheel 1061 is coated with a wavelength conversion material, which can convert the first light S10 into a third light S30 and reflect it to the light splitting device 103 . The second light ray S21 and the third light ray S30 that finally converge are mixed to form a mixed light ray and then 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 to the color wheel module 106 by the first filter device 108a. The color wheel module 106 transmits the first light S10. After the wavelength conversion, a third light S30 is formed (the wavelength of the third light S30 is greater than that of the first light S10), and the third light S30 is reflected to the first filter device 108a, and the third light S30 is reflected to the first filter device 108a by the first filter device 108a. The first reflecting device 109a, the first reflecting device 109a then reflects the third light S30 to the second filtering device 108b, and the second filtering device 108b transmits the third light S30 to the light outlet 107.

At the same time, the second light S20 emitted by the light source module 101 is transmitted by the light splitting device 103 to the reflection device 105, and the reflection device 105 converts the polarization direction of the second light S20 to be consistent with the first light S10 (converted into the second light S21 ), 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 beam S21 is reflected to the light outlet 107 and mixed with the third light beam S30 to form a mixed light beam.

In this embodiment, the light source module 101 is a laser module, the emitted first light S10 and the second light S20 are both blue lasers, and their polarization directions are perpendicular to each other, the first light S10 is p light, The two rays S20 are s rays. The spectroscopic device 103 is specifically a polarizing beam splitter, which can transmit s light and reflect 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 with a shorter wavelength, such as blue light, and transmit light with a longer wavelength, such as yellow light; the second filter device 108b is just opposite to the first filter device 108a, and can transmit light with a longer wavelength. Light, such as yellow light, reflects shorter wavelengths of light, such as blue light. The first reflection device 109a and the second reflection device 109b are total reflection mirrors, which can reflect any received light.

After the first light beam S10 is reflected by the light splitting device 103, it 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 108 a. In this implementation, the color wheel 1061 is a monochromatic color wheel, which is coated with a wavelength conversion material, specifically a yellow phosphor, which can convert blue light into yellow light. Therefore, when the first light ray S10 is incident on the color wheel 1061, it becomes the excitation light, and the phosphor on the excited color wheel emits yellow emission light to form the third light ray S30 (yellow p light). The wavelength of the third light ray S30 (yellow p light) is longer, 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 reflection device 109a. In this embodiment, the reflection device Being a total reflection mirror, the total reflection mirror reflects the third light S30 to the second filter device 108b, which can be transmitted to the light outlet 107 by the second filter device 108b because of its longer wavelength.

At the same time, after the second light S20 is transmitted by the spectroscopic device 103, it is incident on the reflective device 105. The reflective device 105 is specifically an anti-blue ceramic sheet, which can convert the second light S20 (blue s light) into the second light S21 (blue s light) color p light), that is, its polarization direction is converted, other spectral characteristics remain unchanged, and the second light S21 is reflected back to the light splitting device 103 . At this time, because the polarization direction of the second light ray S21 is consistent 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 will reflect the second light ray S21 to the second filtering device 109b. In the light device 108b, because the second filter device 108b can reflect light with a shorter wavelength, the second light S21 (blue s light) is reflected to the light outlet 107, and mixed with the third light S30 to form a mixed light (white light) The illumination light source is output from the light outlet 107 .

In this embodiment, the single-color color wheel can be replaced with a multi-color color wheel, and the adjustment of the luminous flux of the single-color color wheel and the multi-color color wheel is the same as that in the first embodiment, and will not be repeated here.

Please refer to FIG. 7 , which is a schematic structural diagram of the projection device of the present invention. The light source device 1 of the present invention can be used for projection equipment and also for lighting equipment. The projection device 2 includes the above-mentioned light source device 1 , and other components and functions of the projection device 2 are the same as those of the existing projection device, and will not be repeated here.

The light source device of the present invention divides the light source module into a first light ray and a second light ray, so that the first light ray is used to excite the wavelength conversion material to form other color lights, and the second light ray is mixed with the first light ray as a compensation light to form a mixed light 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, which solves the problem that the luminous flux and color temperature of the mixed white light cannot be adjusted at present.

The above are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, All are similarly included in the scope of patent protection of the present invention.

Claims (17)

1. A light source device, characterized in that, comprising: a light source module, a light splitting device, a filter device, a reflective device, a color wheel module; wherein, The light source module emits first light and second light with different polarization directions, and the emission power of the first light and the second light is the same or different; the spectroscopic device, to transmit the first light and reflect the second light; the light-reflecting device to receive the second light and convert the polarization direction of the second light to be consistent with the polarization direction of the first light and then reflect it to the light splitting device; the color wheel module to convert the first light into a third light and reflect it to the filter device; the filter device is configured to transmit the first light, reflect the third light, and transmit the second light whose polarization direction is converted and reflected by the light-reflecting device; The second light and the third light whose polarization directions have been converted form mixed light and then output. 2 . The light source device according to claim 1 , wherein the polarization direction of the first light is perpendicular to the polarization direction of the second light; the wavelength of the first light is greater than or equal to the wavelength of the second light. 3 . wavelength. 3. The light source device according to claim 1, wherein the color wheel of the color wheel module is a monochromatic color wheel or a multi-color color wheel, and the color wheel comprises a wavelength conversion material to convert the first The light is converted into a third light, and the wavelength of the first light is smaller than the wavelength of the third light. 4. The light source device according to claim 3, wherein when the color wheel module is a monochromatic 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 light, m represents the first light, n represents the second light, P ₁ represents the excitation power of the first light, P ₂ represents the excitation power of the second light, Φ (W) represents the luminous flux of the mixed light, Φ(P ₁ ) represents the luminous flux of the first light, Φ(P ₂ ) represents the luminous flux of the second light, x(m) and y(m) represent the The abscissa and ordinate of the color coordinate of the first light ray, x(n) and y(n) represent the abscissa and ordinate of the color coordinate of the second light ray, and x(W) and y(W) represent the Describe the abscissa and ordinate of the color coordinates of the mixed light. 5. The light source device according to claim 3, wherein when the color wheel module is a multi-color color wheel, the color wheel module will reflect several kinds of the third light rays with different wavelengths, and the The luminous flux of the mixed light output by the filter device satisfies the following formula: Wherein, W represents the mixed light, i represents each of the third light with different wavelengths, i=1, 2, 3, 4..., Φ(W) represents the luminous flux of the mixed light, x(W) and y(W) represents the abscissa and ordinate of the color coordinate of the mixed light, Φ(i) represents the luminous flux of each of the third rays, x(i) and y(i) represent each of the third The abscissa and ordinate of the color coordinates of the light. 6. The light source device according to claim 1, wherein the light source module comprises at least a first laser and a second laser, the first laser emits the first light, and the second laser emits the the second light rays, so that the emission powers of the first light rays and the second light rays are the same or different. 7. The light source device according to claim 6, wherein the first light ray and the third light ray satisfy the following relationship: Wherein, P ₁ represents the excitation power of the first light ray, P ₂ represents the excitation power of the second light ray, λ ₂ represents the spectral peak of the second light ray, and λ ₃ represents the spectral peak of the third light ray. 8 . The light source device according to claim 1 , wherein the light source device further comprises a control module to control and adjust the on-off, emission power, and current of the first light and the second light. 9 . . 9. A light source device, characterized in that it comprises: a light source module, a light splitting device, a reflective device, and a color wheel module; wherein, The light source module emits first light and second light with different polarization directions, and the emission power of the first light and the second light is the same or different; The spectroscopic device includes a first area and a second area, the first area is used to reflect the first light and transmit the second light; the second area is used to transmit the third light; the color wheel module to convert the first light into third light and reflect it to the second area of the light splitting device; the light-reflecting device to receive the second light, convert the polarization direction of the second light to be consistent with the polarization direction of the first light, and then reflect it to the first area of the light splitting device; The second light and the third light whose polarization directions are converted form mixed light and then output. 10. 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 and the polarization direction of the second light are Vertical; the color wheel of the color wheel module is a monochromatic color wheel or a multi-color color wheel, and the color wheel includes a wavelength conversion material to convert the first light into a third light, the wavelength of the first light less than the wavelength of the third light. 11. The light source device according to claim 9, wherein the light source module comprises at least a first laser and a second laser, the first laser emits the first light, and the second laser emits the the second light ray, so that the emission powers of the first light ray and the second light ray are different. 12 . 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, emission power, and current of the first light and the second light. 13 . . 13. A light source device, comprising: a light source module, a light splitting device, a reflective device, a color wheel module, a reflection device, and a filter device; wherein, the filter device comprises a first filter device and a second filter device. Two filter devices; the reflection device includes a first reflection device and a second reflection device. The light source module emits first light and second light with different polarization directions, and the emission power of the first light and the second light is the same or different; the spectroscopic device, to reflect the first light and transmit the second light; the color wheel module to convert the first light into third light and reflect it to the first filter device; the light-reflecting device to receive the second light, convert the polarization direction of the second light to be consistent with the polarization direction of the first light, and then reflect it to the light splitting device; the first filter device to transmit the first light and reflect the third light; the second filter device for transmitting the third light and reflecting the second light whose polarization direction is consistent with the first light; The anti-first reflection device is used to reflect the third light reflected by the first filter device to the second filter device; the second reflection device is used to reflect the second light reflected by the light splitting device. light to the second filter device; The second light and the third light whose polarization directions are converted form mixed light and then output. 14. 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 and the polarization direction of the second light are Vertical; the color wheel of the color wheel module is a monochromatic color wheel or a multi-color color wheel, and the color wheel includes a wavelength conversion material to convert the first light into a third light, the wavelength of the first light less than the wavelength of the third light. 15. The light source device according to claim 13, wherein the light source module comprises at least a first laser and a second laser, the first laser emits the first light, and the second laser emits the the second light ray, so that the emission powers of the first light ray and the second light ray are different. 16 . The light source device according to claim 13 , wherein the light source device further comprises a control module to control and adjust the on-off, emission power, and current of the first light and the second light. 17 . . 17. A projection device, comprising the light source device according to any one of claims 1-16.