CN104345530A - Display light source module - Google Patents

Abstract

A display light source module comprises a light source, a rotating wheel, an actuator, a wavelength conversion wheel and an optical module. The light source is used for providing a first light beam with a first wavelength. The rotating wheel comprises a transmission area and a reflection area. The actuator is connected to the rotator wheel. The actuator is used for rotating the rotating wheel, so that the transmission area and the reflection area are positioned on the traveling path of the first light beam in time sequence. The wavelength conversion wheel includes a first wavelength conversion region. The first wavelength conversion region is used for converting the first light beam into a second light beam with a second wavelength. The optical module is used for guiding the first light beam penetrating through the penetrating area of the rotating wheel to the wavelength conversion wheel, guiding the first light beam reflected from the reflecting area of the rotating wheel to a target position, and guiding the second light beam from the first wavelength conversion area of the wavelength conversion wheel to the target position. The display light source module has the advantages of less element quantity, small volume and capability of saving element cost.

Description

Display light module

technical field

The invention relates to a display light source module.

Background technique

In recent years, with the improvement of the manufacturing technology of projection devices, light, thin and short projection devices have become the mainstream of the market. Therefore, the display light source module used to provide the light beam of the projection device also needs to be developed in a small size to meet the size of the projection device. . However, once the volume of the display light source module is reduced, the components that can be placed in the display light source module are limited. In this way, how to maintain high-efficiency and low-power-consumption light source output with limited components is one of the problems that the industry is currently striving to improve.

Contents of the invention

The object of the present invention is to provide a display light source module, which includes a light source, a rotating wheel, an actuator, a wavelength conversion wheel and an optical module. The light source is used for providing a first light beam, and the first light beam has a first wavelength. The rotating wheel contains a transmissive area and a reflective area. The actuator is connected to the rotating wheel. The actuator is used to rotate the rotary wheel, so that the transmissive area and the reflective area are located on the path of the first light beam in time sequence. The wavelength conversion wheel includes a first wavelength conversion region. The first wavelength conversion region is used for converting the first light beam into a second light beam with a second wavelength. The optical module is used to guide the first light beam passing through the penetrating area of the rotating wheel to the wavelength conversion wheel, guide the first light beam reflected from the reflecting area of the rotating wheel to the target position, and guide the first light beam from the wavelength conversion wheel The second light beam of the first wavelength conversion region is directed to a target location.

In one or more embodiments of the present invention, the wavelength conversion wheel further includes a second wavelength conversion region. The second wavelength conversion region is used for converting the first light beam into a third light beam with a third wavelength. The actuator is also connected to the wavelength conversion wheel, and the actuator is also used to rotate the wavelength conversion wheel, so that the first wavelength conversion region and the second wavelength conversion region are located on the path of the first beam passing through the rotating wheel in time sequence. The optical module is also used to guide the third light beam from the second wavelength conversion region of the wavelength conversion wheel to the target position.

In one or more embodiments of the present invention, both the first wavelength conversion region and the second wavelength conversion region are arc-shaped, and the arc length of the first wavelength conversion region is different from the arc length of the second wavelength conversion region.

In one or more embodiments of the present invention, both the reflection area and the penetration area of the rotating wheel are arc-shaped, and the arc length of the reflection area is different from the arc length of the penetration area.

In one or more embodiments of the present invention, the optical module includes a first beam splitter, a reflection mirror and a second beam splitter. The first beam splitter can allow the first beam to pass through, and the first beam splitter is also used to reflect the second beam to the second beam splitter. The reflecting mirror is used for reflecting the first light beam reflected from the rotating wheel to the second beam splitter. The second beam splitter can allow the second beam to pass through, and the second beam splitter is also used to reflect the first beam from the mirror to the target position.

In one or more embodiments of the present invention, the optical module includes a first beam splitter, a reflection mirror and a second beam splitter. The first beam splitter can allow the second light beam to pass through, and the first beam splitter is also used to reflect the first beam from the rotating wheel to the wavelength conversion wheel. The reflecting mirror is used for reflecting the first light beam reflected from the rotating wheel to the second beam splitter. The second beam splitter can allow the first beam to pass through, and the second beam splitter is also used to reflect the second beam to the target position.

In one or more embodiments of the present invention, the optical module includes a reflection mirror, a first beam splitter, and a second beam splitter. The reflecting mirror is used for reflecting the first light beam reflected from the rotating wheel to the first beam splitter. The first beam splitter can allow the second light beam to pass through, and the first beam splitter is also used to reflect the first beam from the reflection mirror to the wavelength conversion wheel. The second beam splitter can allow the first beam to pass through, and the second beam splitter is also used to reflect the second beam to the target position.

In one or more embodiments of the present invention, the optical module includes a first beam splitter, a reflection mirror and a second beam splitter. The first beam splitter can allow the first beam to pass through, and the first beam splitter is also used to reflect the second beam to the mirror. The reflecting mirror is used for reflecting the second light beam from the first beam splitter to the second beam splitter. The second beam splitter can allow the first beam to pass through, and the second beam splitter is also used to reflect the second beam to the target position.

In one or more embodiments of the present invention, the display light source module further includes a plurality of lenses, respectively placed between the light source and the rotating wheel, between the optical module and the wavelength conversion wheel, and placed between the first light beam passing through the rotating wheel on the following path.

Therefore, the beneficial effect of the present invention is that the above-mentioned display light source module can sequentially generate light beams of different wavelengths because only one light source is needed, and the components of the optical module are less than the general display light source module, so the above-mentioned display light source module has The advantage of less components is that the size of the display light source module can be reduced, and the component cost of the display light source module can also be saved.

Description of drawings

FIG. 1A is a schematic diagram of an optical path showing a light source module at a first time sequence according to an embodiment of the present invention.

FIG. 1B is a schematic diagram of the light path of the display light source module in other time sequences according to FIG. 1A .

FIG. 2 is a front view of the rotating wheel in FIG. 1A .

FIG. 3 is a front view of the wavelength conversion wheel shown in FIG. 1A .

FIG. 4 is a schematic diagram of an optical path of a display light source module according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of an optical path of a display light source module according to yet another embodiment of the present invention.

FIG. 6 is a schematic diagram of an optical path of a display light source module according to another embodiment of the present invention.

Wherein, the reference signs are explained as follows:

100: light source

102, 212, 214, 216, 218, 222, 224, 226, 228, 402: path

200: Spin Wheel

210: reflection area

220: Penetration Zone

300: Actuator

400: wavelength conversion wheel

410: Green light conversion area

420: Red light conversion area

502, 504, 506, 508: optical modules

512, 514, 516, 518: the first beam splitter

522, 524, 526, 528: mirrors

532, 534, 536, 538: the second beam splitter

542, 544, 546, 548, 810, 820, 830: lens

900: target position

Detailed ways

A number of embodiments of the present invention will be disclosed below with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and elements will be shown in a simple and schematic manner in the drawings.

Please refer to FIG. 1A and FIG. 1B at the same time. FIG. 1A is a schematic diagram of an optical path showing a light source module at a first time sequence according to an embodiment of the present invention. FIG. 1B is a schematic diagram of the light path of the display light source module in other time sequences according to FIG. 1A . Please refer to FIG. 1A first. The display light source module includes a light source 100 , a rotating wheel 200 , an actuator 300 , a wavelength conversion wheel 400 and an optical module 502 . The light source 100 is used for providing a first light beam with a first wavelength. For example, in this embodiment, the first light beam may be a blue light beam. At the first timing, the blue light beam emitted by the light source 100 strikes the rotating wheel 200 via the path 102 , and is reflected by the rotating wheel 200 into the optical module 502 . The blue light beam is then guided by optical module 502 along path 212 to target location 900 . Wherein the target position 900 may place, for example, a light pipe or a light modulator, but the present invention is not limited thereto.

Then please refer to FIG. 1B . In the second sequence, the blue light beam hits the rotating wheel 200 along the path 102 . After passing through the rotating wheel 200 , the blue light beam enters the optical module 502 and is guided by the optical module 502 to the wavelength conversion wheel 400 along the path 222 . The wavelength conversion wheel 400 is capable of converting the blue light beam into a second light beam with a second wavelength, wherein the second light beam is, for example, a green light beam. The green light beam then enters the optical module 502 and is guided by the optical module 502 along the path 402 to the target location 900 . In this way, light beams with different wavelengths can be obtained in time sequence through the display light source module of this embodiment. It should be noted that, in the optical path schematic diagrams shown in FIG. 1A and FIG. 1B , the dotted arrow paths both schematically represent the traveling path of the light beam.

FIG. 2 is a front view of the rotating wheel 200 shown in FIG. 1A . In detail, the rotating wheel 200 includes a reflection area 210 and a transmission area 220 . The actuator 300 (as shown in FIG. 1A ) is connected to the rotating wheel 200 for rotating the rotating wheel 200 so that the reflective area 210 and the transmissive area 220 are located on the path of the blue light beam at the first timing and the second timing respectively. . In this way, at the first time sequence, the blue light beam can be reflected by the reflective area 210 on the rotating wheel 200 ; and at the second time sequence, the blue light beam can pass through the penetrating area 220 on the rotating wheel 200 .

FIG. 3 is a front view of the wavelength conversion wheel 400 shown in FIG. 1A . The wavelength conversion wheel 400 includes a first wavelength conversion region, wherein the first wavelength conversion region is, for example, a green light conversion region 410 . The green light conversion region 410 is capable of converting blue light beams into green light beams. Therefore, in the second timing sequence, the green light conversion region 410 can be placed on the path 222 (as shown in FIG. 1B ), so that in the second timing sequence, the blue light beam can hit the green light conversion region 410 and be converted into a green light beam. . The above-mentioned green light conversion region 410 may include, for example, phosphors emitting green light, but the present invention is not limited thereto.

However, in this embodiment, the wavelength conversion wheel 400 may further include a second wavelength conversion region, wherein the second wavelength conversion region is, for example, the red light conversion region 420 . The red light conversion region 420 can convert the blue light beam into a red light beam with a red wavelength. Therefore, the display light source module of this embodiment can provide the light beams of the three primary colors of red, green and blue in time sequence. The above-mentioned red light converting region 420 may include, for example, red-emitting phosphor, but the present invention is not limited thereto.

Please return to Figure 1B. In detail, the actuator 300 can also be connected to the wavelength conversion wheel 400, and the actuator 300 is also used to rotate the wavelength conversion wheel 400, so that the green light conversion region 410 and the red light conversion region 420 in FIG. on the path (namely path 222 ) of the blue light beam passing through the rotating wheel 200 . In this way, at the second timing, the blue light beam can penetrate the rotating wheel 200 and reach the green light conversion area 410 . At a third timing, the blue light beam can penetrate the rotating wheel 200 and reach the red light conversion region 420 , so the blue light beam is converted into a red light beam. The red beam then enters the optical module 502 and is guided by the optical module 502 along the path 402 to the target location 900 .

Please go back to Figure 3. On the other hand, because in the first sequence, the blue light beam does not reach the wavelength conversion wheel 400, so in this sequence, the region 430 of the wavelength conversion wheel 400 located on the path 222 (marked in FIG. 1B ) may not have The function of wavelength conversion is used to reduce the cost of the wavelength conversion wheel 400 , but the present invention is not limited thereto.

In this way, through the above structure, the display light source module can generate light beams with different wavelengths in time sequence. Next, how to achieve light beams with different wavelengths through the display light source module of this embodiment will be described in detail.

Please return to Figure 1A. The optical module 502 includes a first beam splitter 512 , a reflector 522 and a second beam splitter 532 . The first beam splitter 512 can allow the blue beam to pass through, and the first beam splitter 512 is also used to reflect the green beam and the red beam to the second beam splitter 532 . The mirror 522 is used to reflect the blue light beam reflected from the rotating wheel 200 to the second beam splitter 532 . The second beam splitter 532 can allow the green beam and the red beam to pass through, and the second beam splitter 532 is also used to reflect the blue beam from the reflector 522 to the target position 900 . The optical module 502 may further include a lens 542 disposed between the mirror 522 and the second beam splitter 532 . In addition, the display light source module may further include a plurality of lenses 810 , 820 and 830 . The lens 810 is placed between the light source 100 and the rotating wheel 200 , the lenses 820 and 830 are placed between the optical module 502 and the wavelength conversion wheel 400 , and the lenses 810 , 820 and 830 are all placed on the path of the blue light beam.

At the first timing, the actuator 300 rotates the reflective region 210 (as shown in FIG. 2 ) of the rotating wheel 200 to the path of the blue light beam, and rotates the region 430 of the wavelength conversion wheel 400 (as shown in FIG. 3 ). shown) rotate onto path 222 (shown in FIG. 1B ). The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . The blue light beam is reflected by the reflective area 210 of the rotating wheel 200 into the optical module 502 , and thus guided by the optical module 502 to the target position 900 according to the path 212 . Firstly, the blue light beam first reaches the reflector 522 , is reflected by the reflector 522 , passes through the lens 542 and reaches the second beam splitter 532 , and is therefore reflected by the second beam splitter 532 to the target position 900 .

Then please refer to FIG. 1B . In the second sequence, the actuator 300 rotates the transmissive region 220 (as shown in FIG. 3 ) rotate onto path 222 . The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . The blue light beam passes through the transmission area 220 of the rotating wheel 200 and the first beam splitter 512 sequentially according to the path 222 , and reaches the green light conversion area 410 of the wavelength conversion wheel 400 after being condensed by the lenses 820 and 830 . The green light conversion area 410 converts the blue light beam into a green light beam, and then the green light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 502 to the target position 900 according to the path 402 . First, the green light beam first reaches the first beam splitter 512 , and is therefore reflected by the first beam splitter 512 to the second beam splitter 532 . The green light beam then passes through the second beam splitter 532 to reach the target position 900 .

In the third sequence, the actuator 300 rotates the transmissive region 220 (as shown in FIG. 3 ) rotate onto path 222 . The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . The blue light beam reaches the red light conversion region 420 of the wavelength conversion wheel 400 according to the path 222 . The red light conversion region 420 converts the blue light beam into a red light beam, and then the red light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 502 to the target position 900 along the path 402 . First, the red light beam first reaches the first beam splitter 512 , and is therefore reflected by the first beam splitter 512 to the second beam splitter 532 . The red light beam then passes through the second beam splitter 532 to reach the target position 900 . In this way, as long as the actuator 300 rotates the rotary wheel 200 and the wavelength conversion wheel 400 in time sequence and repeats the above manner, the display light source module can continuously generate blue light beams, green light beams and red light beams.

To sum up the above, the display light source module of this embodiment only needs one light source 100 to sequentially generate blue, green and red light beams, and it can be achieved by the first beam splitter 512, the reflection mirror 522 and the second beam splitter 532. Due to the function of the optical module 502, the display light source module of this embodiment has the advantage of fewer components, and therefore the volume of the display light source module can be reduced, and the cost of components of the display light source module can also be saved.

It should be noted that although the above-mentioned actuator 300 controls the rotating wheel 200 and the wavelength conversion wheel 400 at the same time, in other embodiments, the rotating wheel 200 and the wavelength conversion wheel 400 may also be connected to different actuators 300 respectively. In other words, the rotating wheel 200 and the wavelength conversion wheel 400 can be controlled by different actuators 300 , and the present invention is not limited thereto. On the other hand, although the display light source module of this embodiment includes the lenses 810 , 820 , 830 and 542 , this does not limit the present invention. Those skilled in the art to which the present invention belongs can flexibly select the number of lenses and their positions according to actual needs.

Then please refer to FIG. 3 . The display light source module can control its white balance by designing the light quantity of the light beams of each wavelength. Specifically, the light intensity of the beam generated by the wavelength conversion wheel 400 is proportional to the length of the time sequence. In other words, the longer the time sequence is, the higher the light intensity of the light beam generated in the time sequence is. Therefore, in one or more embodiments, the green light conversion region 410 and the red light conversion region 420 of the wavelength conversion wheel 400 may both be arc-shaped, and the arc length of the green light conversion region 410 may be different from the arc length of the red light conversion region 420 long. Taking FIG. 3 as an example, the arc length of the green light conversion region 410 is greater than the arc length of the red light conversion region 420 . In this way, when the rotation speed of the wavelength conversion wheel 400 is constant, the time of the second timing sequence and the third timing sequence are different, and thus the amounts of green light and red light generated are also different.

On the other hand, please refer to FIG. 2 . Similarly, the white balance can also be controlled by designing the reflective area 210 and the transmissive area 220 of the rotating wheel 200 . Specifically, in one or more embodiments, both the reflective area 210 and the penetrating area 220 of the rotating wheel 200 are arc-shaped, and the arc length of the reflective area 210 is different from the arc length of the penetrating area 220 . Taking FIG. 2 as an example, the arc length of the reflection area 210 is smaller than the arc length of the transmission area 220 . In addition, the arc length of the penetrating region 220 may also be substantially equal to the sum of the arc lengths of the green light conversion region 410 and the red light conversion region 420 (both shown in FIG. 3 ) of the wavelength conversion wheel 400 . In summary, by designing the arc length ratios of the reflective area 210 and the transmissive area 220 of the rotating wheel 200 and the green light conversion area 410 and red light conversion area 420 of the wavelength conversion wheel 400 , the white balance of the display light source module can be changed.

Next, please refer to FIG. 4 , which shows a schematic diagram of an optical path of a display light source module according to another embodiment of the present invention. The difference between this embodiment and the embodiment shown in FIG. 1A and FIG. 1B lies in the components of the optical module. In this embodiment, the optical module 504 includes a first beam splitter 514 , a reflection mirror 524 and a second beam splitter 534 . The first beam splitter 514 can allow the green beam and the red beam to pass through, and the first beam splitter 514 is also used to reflect the blue beam from the rotating wheel 200 to the wavelength conversion wheel 400 . The mirror 524 is used to reflect the blue light beam reflected from the rotating wheel 200 to the second beam splitter 534 . The second beam splitter 534 can allow the blue beam to pass through, and the second beam splitter 534 is also used to reflect the green beam and the red beam to the target position 900 . The optical module 504 may further include a lens 544 disposed between the mirror 524 and the second beam splitter 534 .

Therefore, at the first timing, the actuator 300 rotates the reflective region 210 (as shown in FIG. shown) rotate onto path 224. The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . The blue light beam is reflected by the reflective area 210 of the rotating wheel 200 into the optical module 504 , and thus guided by the optical module 504 to the target position 900 according to the path 214 . Firstly, the blue light beam first reaches the reflector 524 , is reflected by the reflector 524 , passes through the lens 544 and then reaches the second beam splitter 534 , thus passing through the second beam splitter 534 to reach the target position 900 .

In the second sequence, the actuator 300 rotates the transmissive region 220 (as shown in FIG. 3 ) rotate onto path 224 . The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . After passing through the penetrating region 220 of the rotating wheel 200 , the blue light beam is reflected by the first beam splitter 514 along the path 224 , and then reaches the green light converting region 410 of the wavelength converting wheel 400 through the condensing of the lenses 820 and 830 . The green light conversion area 410 converts the blue light beam into a green light beam, and then the green light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 504 to the target position 900 along the path 404 . First, the green light beam first passes through the first beam splitter 514 and reaches the second beam splitter 534 . The green light beam is then reflected by the second beam splitter 534 to reach the target position 900 .

In the third sequence, the actuator 300 rotates the transmissive region 220 (as shown in FIG. 3 ) rotate onto path 224 . The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . After the blue light beam penetrates the penetration area 220 of the rotating wheel 200 , it reaches the red light conversion area 420 of the wavelength conversion wheel 400 along the path 224 . The red light conversion region 420 converts the blue light beam into a red light beam, and then the red light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 504 to the target position 900 along the path 404 . First, the red light beam first passes through the first beam splitter 514 and reaches the second beam splitter 534 . The red light beam is then reflected by the second beam splitter 534 to reach the target position 900 . In this way, as long as the actuator 300 rotates the rotary wheel 200 and the wavelength conversion wheel 400 in time sequence and repeats the above manner, the display light source module can continuously generate blue light beams, green light beams and red light beams. As for other details of this embodiment, since they are the same as those in FIG. 1A and FIG. 1B , they will not be repeated here.

Next, please refer to FIG. 5 , which shows a schematic diagram of an optical path of a display light source module according to yet another embodiment of the present invention. The difference between this embodiment and the embodiment shown in FIG. 1A and FIG. 1B lies in the components of the optical module. The optical module 506 includes a mirror 526 , a first beam splitter 516 and a second beam splitter 536 . The mirror 526 is used to reflect the blue light beam reflected from the rotating wheel 200 to the first beam splitter 516 . The first beam splitter 516 can allow the green beam and the red beam to pass through, and the first beam splitter 516 is also used to reflect the blue beam from the reflector 526 to the wavelength conversion wheel 400 . The second beam splitter 536 can allow the blue beam to pass through, and the second beam splitter 536 is also used to reflect the green beam and the red beam to the target position 900 . In addition, the optical module 506 further includes a lens 546 disposed between the rotating wheel 200 and the second beam splitter 536 .

Therefore, at the first timing, the actuator 300 rotates the transmissive region 220 (as shown in FIG. shown) rotate onto path 216. The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . The blue light beam penetrates the penetration area 220 of the rotating wheel 200 into the optical module 506 , and thus is guided by the optical module 506 to the target position 900 according to the path 226 . The blue light beam passes through the lens 546 and then reaches the second beam splitter 536 , thus passing through the second beam splitter 536 to reach the target position 900 .

In the second sequence, the actuator 300 rotates the reflective region 210 (as shown in FIG. 2 ) of the rotary wheel 200 to the path of the blue light beam, and rotates the green light conversion region 410 of the wavelength conversion wheel 400 (as shown in FIG. 2 ). 3) rotate onto path 216. The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . After the blue light beam is reflected by the reflection area 210 of the rotating wheel 200 , it is reflected by the reflection mirror 526 along the path 216 , and thus reaches the first beam splitter 516 . Afterwards, the blue light beam is reflected again by the first beam splitter 516 , and is concentrated by the lenses 820 and 830 to reach the green light conversion area 410 of the wavelength conversion wheel 400 . The green light conversion region 410 converts the blue light beam into a green light beam, and then the green light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 506 to the target position 900 along the path 406 . First, the green light beam first passes through the first beam splitter 516 and reaches the second beam splitter 536 . The green light beam is then reflected by the second beam splitter 536 to reach the target position 900 .

At the third timing, the actuator 300 rotates the reflective region 210 (as shown in FIG. 2 ) of the rotary wheel 200 to the path of the blue light beam, and rotates the red light conversion region 420 of the wavelength conversion wheel 400 (as shown in FIG. 2 ). 3) rotate onto path 216. The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . After being reflected by the reflection area 210 of the rotating wheel 200 , the blue light beam reaches the red light conversion area 420 of the wavelength conversion wheel 400 along the path 216 . The red light conversion region 420 converts the blue light beam into a red light beam, and then the red light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 506 to the target location 900 along the path 406 . First, the red light beam first passes through the first beam splitter 516 and reaches the second beam splitter 536 . The red light beam is then reflected by the second beam splitter 536 to reach the target position 900 . In this way, as long as the actuator 300 rotates the rotary wheel 200 and the wavelength conversion wheel 400 in time sequence and repeats the above manner, the display light source module can continuously generate blue light beams, green light beams and red light beams. As for other details of this embodiment, since they are the same as those in FIG. 1A and FIG. 1B , they will not be repeated here.

Next, please refer to FIG. 6 , which shows a schematic diagram of an optical path of a display light source module according to another embodiment of the present invention. The difference between this embodiment and the embodiment shown in FIG. 1A and FIG. 1B lies in the components of the optical module. The optical module 508 includes a first beam splitter 518 , a reflector 528 and a second beam splitter 538 . The first beam splitter 518 can allow the blue beam to pass through, and the first beam splitter 518 is also used to reflect the green beam and the red beam to the mirror 528 . The mirror 528 is used to reflect the green light beam and the red light beam from the first beam splitter 518 to the second beam splitter 538 . The second beam splitter 538 can allow the blue beam to pass through, and the second beam splitter 538 is also used to reflect the green beam and the red beam to the target position 900 . In addition, the optical module 508 may further include a lens 548 disposed between the rotating wheel 200 and the second beam splitter 538 .

Therefore, at the first timing, the actuator 300 rotates the reflective region 210 (as shown in FIG. shown) rotate onto path 228. The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . The blue light beam is reflected by the reflective area 210 of the rotating wheel 200 into the optical module 508 , and thus guided by the optical module 508 to the target location 900 according to the path 218 . The blue light beam passes through the lens 548 and then reaches the second beam splitter 538 , thus passing through the second beam splitter 538 to reach the target position 900 .

In the second sequence, the actuator 300 rotates the transmissive region 220 (as shown in FIG. 3 ) rotate onto path 228 . The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . After passing through the penetrating area 220 of the rotating wheel 200 , the blue light beam passes through the first beam splitter 518 along the path 228 , and reaches the green light converting area 410 of the wavelength converting wheel 400 through the condensing of the lenses 820 and 830 . The green light conversion region 410 converts the blue light beam into a green light beam, and then the green light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 508 to the target position 900 along the path 408 . Firstly, the green light beam is firstly reflected by the first beam splitter 518 to the mirror 528 , thus reflected by the mirror 528 to the second beam splitter 538 , and then reflected by the second beam splitter 538 to the target position 900 .

In the third sequence, the actuator 300 rotates the transmissive region 220 (as shown in FIG. 3 ) rotate onto path 228 . The blue light beam emitted by the light source 100 passes through the lens 810 and passes to the rotating wheel 200 along the path 102 . After the blue light beam penetrates the penetration area 220 of the rotating wheel 200 , it reaches the red light conversion area 420 of the wavelength conversion wheel 400 along the path 228 . The red light conversion region 420 converts the blue light beam into a red light beam, and then the red light beam is reflected back to the lenses 820 and 830 , passed through the convergence of the lenses 820 and 830 , and guided by the optical module 508 to the target position 900 along the path 408 . First, the red light beam is firstly reflected by the first beam splitter 518 to the reflector 528 , thus reflected by the reflector 528 to the second beam splitter 538 , and then reflected by the second beam splitter 538 to the target position 900 . In this way, as long as the actuator 300 rotates the rotary wheel 200 and the wavelength conversion wheel 400 in time sequence and repeats the above manner, the display light source module can continuously generate blue light beams, green light beams and red light beams. As for other details of this embodiment, since they are the same as those in FIG. 1A and FIG. 1B , they will not be repeated here.

Although the present invention has been disclosed above in terms of implementation, it is not intended to limit the present invention. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall prevail as defined by the claims.

Claims (9)

1. A display light source module, comprising: a light source for providing a first light beam having a first wavelength; A rotating wheel, including a penetrating area and a reflecting area; an actuator connected to the rotating wheel, the actuator is used to rotate the rotating wheel so that the penetrating area and the reflecting area are located on the path of the first light beam in time sequence; a wavelength conversion wheel comprising a first wavelength conversion region for converting the first light beam into a second light beam having a second wavelength; and an optical module for guiding the first light beam passing through the penetrating area of the rotating wheel to the wavelength conversion wheel, and guiding the first light beam reflected from the reflecting area of the rotating wheel to a target position, and direct the second light beam from the first wavelength conversion region of the wavelength conversion wheel to the target position. 2. The display light source module according to claim 1, wherein the wavelength conversion wheel further comprises a second wavelength conversion region, the second wavelength conversion region is used to convert the first light beam into a first wavelength with a third wavelength three beams; Wherein the actuator is also connected to the wavelength conversion wheel, and the actuator is also used to rotate the wavelength conversion wheel, so that the first wavelength conversion region and the second wavelength conversion region are located at the first wavelength conversion region through the rotating wheel in time sequence. on the path of a beam of light; and Wherein the optical module is also used to guide the third light beam from the second wavelength conversion region of the wavelength conversion wheel to the target position. 3. The display light source module as claimed in claim 2, wherein both the first wavelength conversion region and the second wavelength conversion region are arc-shaped, and the arc length of the first wavelength conversion region is different from the arc length of the second wavelength conversion region long. 4 . The display light source module as claimed in claim 1 , wherein both the reflective area and the penetrating area of the rotating wheel are arc-shaped, and the arc length of the reflective area is different from the arc length of the penetrating area. 5. The display light source module according to claim 1, wherein the optical module comprises a first beam splitter, a reflector and a second beam splitter, the first beam splitter can allow the first light beam to pass through, and the first beam splitter A beam splitter is also used to reflect the second light beam to the second beam splitter, and the reflector is used to reflect the first beam reflected from the rotating wheel to the second beam splitter, and the second beam splitter can allow The second light beam passes through, and the second beam splitter is also used to reflect the first light beam from the mirror to the target position. 6. The display light source module as claimed in claim 1, wherein the optical module comprises a first beam splitter, a reflector and a second beam splitter, the first beam splitter can allow the second light beam to pass through, and the first beam splitter A beam splitter is also used to reflect the first light beam from the rotating wheel to the wavelength conversion wheel, and the reflector is used to reflect the first beam reflected from the rotating wheel to the second beam splitter, the second The beam splitter can allow the first beam to pass through, and the second beam splitter is also used to reflect the second beam to the target position. 7. The display light source module as claimed in claim 1, wherein the optical module comprises a reflector, a first beam splitter and a second beam splitter, the reflector is used to reflect the first light beam reflected from the rotating wheel Reflected to the first beam splitter, the first beam splitter can allow the second light beam to pass through, and the first beam splitter is also used to reflect the first beam from the reflector to the wavelength conversion wheel, the second beam splitter The beam splitter can allow the first beam to pass through, and the second beam splitter is also used to reflect the second beam to the target position. 8. The display light source module as claimed in claim 1, wherein the optical module comprises a first beam splitter, a reflector and a second beam splitter, the first beam splitter can allow the first light beam to pass through, and the first beam splitter A beam splitter is also used to reflect the second light beam to the reflector, and the reflector is used to reflect the second beam from the first beam splitter to the second beam splitter, and the second beam splitter can allow the The first light beam passes through, and the second beam splitter is also used to reflect the second light beam to the target position. 9. The display light source module as claimed in claim 1, further comprising a plurality of lenses respectively placed between the light source and the rotating wheel, between the optical module and the wavelength conversion wheel, and placed between the first The light beam travels on the path after passing through the rotating wheel.