TWM331685U - Projection apparatus and image processing system thereof - Google Patents

Abstract

An image processing system including a beam splitting and combining unit, a first light valve and a second light valve is provided. The beam splitting and combining unit includes a first polarizing beam splitting (PBS) unit and a second PBS unit. The second PBS unit and the first PBS unit are disposed across each other. The first light valve is disposed at one side of the beam splitting and combining unit. The second light valve is disposed at another side of the beam splitting and combining unit and is opposite to the first light valve. The first PBS unit is adapted to reflect a first illumination beam with a fist polarization direction to the first light valve. The second PBS unit is adapted to reflect a second illumination beam with a second polarization direction to the second light valve. A projection apparatus using the image processing system is also provided.

Description

M331685 97-01-22 VIII. New description: [New technical field] The present invention relates to a display apparatus and an optical processing system thereof, and more particularly to a projection apparatus ( A projection apparatus and an image processing system thereof. [Prior Art] Referring to FIG. 1 , a conventional monocrystalline liquid crystal on silicon (LCOS) projection apparatus 100 includes an illumination system 110. A polarization beam splitting prism (PBS prism) 120, a single crystal liquid crystal panel (LCOS panel) 130, and a projection lens 140 are provided. The illumination system 110 includes a red laser light source 112r, a green laser light source 112g, a blue laser light source 112b, dichroic mirrors 114a and 114b, and a light integration rod. ) 116. The red light beam 113r emitted by the red laser light source 112r is sequentially reflected by the dichroic mirror 114b, reflected by the light integrating column 116 and the polarized beam splitter 120 to the single crystal germanium liquid crystal panel 130. The green light beam 113g emitted by the green laser light source 112g sequentially passes through the dichroic mirror 114a, the penetrating dichroic mirror 114b, the light integrating column 116, and the polarized beam splitter 120 to be reflected to the single crystal silicon liquid crystal panel 130. The blue light beam 113b emitted by the blue laser light source 112b is sequentially reflected by the dichroic mirror 114a, penetrates the dichroic mirror 114b, is reflected by the light integrating column 116 and the polarized beam splitter 120, and is reflected to the single crystal germanium liquid crystal panel 130. . The single crystal germanium liquid crystal panel 130 converts the red light beam H3r, the green light beam 6. M331685 97-01-22 113g, and the blue light beam 113b into the image light beam ii3'. The image beam 113 is projected onto a screen (not shown) through the projection lens 140 to form an image plane. Since the early-type early-crystal-second liquid crystal projector 100 has only one single-crystal cut liquid crystal panel 130', in order to obtain a full-color picture, the red, green, and blue light beams 113r, 113g, and 113b must be alternately directed toward the single crystal liquid crystal panel 13〇. So that the early crystal cut liquid crystal panel 130 separates the red, green, and blue light beams 113r, 113g, 113b. In other words, at any point in time, only one color of the light beam is projected onto the single crystal solar panel 130. Through such a time-mixed color, the human eye can perceive a full-color image. Therefore, the red laser light source 112r, the green laser light source 112g, and the blue laser light source H2b are sequentially turned on and then turned off, that is, at any time point, only one color of the laser light source is turned on, and other colors are The laser source is turned off. However, since the laser light sources of the respective colors are only turned on for about one third of the time, the monolithic single crystal germanium liquid crystal projector 100 does not have a high utilization rate of the light source, so that the monolithic single crystal germanium liquid crystal projection is performed. The brightness of the image plane projected by the device 100 is low. Referring to FIG. 2, a conventional three-chip single crystal germanium liquid crystal projection apparatus 200 includes a red laser light source 210r, a green laser light source 210g, a blue laser light source 210b, dichroic mirrors 220a, 220b, and two lenses. A lens array 230a, 230b, a beam splitting and combining system 240, three single crystal solar panels 250a, 250b, 250c and a projection lens 260. The split light system 240 includes a dichroic unit 242, a dichroic mirror 244, a three-polarization splitter 7 . M331685 97-01-22 246a, 246b, 246c and an X cu (X_cube) 248. The color separation unit 242 is composed of two dichroic mirrors 242a and 242b. The red light beam 212r emitted by the red laser light source 210r is sequentially reflected by the dichroic mirror 220b, penetrates the lens arrays 230a and 230b, is reflected by the dichroic mirror 242a, is reflected by the polarizing beam splitter 246a, and is monocrystalline. The panel 250a reflects, penetrates, and is reflected by the X-ray 248 to the projection lens 260. The green light beam 212g emitted by the green laser light source 210g sequentially passes through the dichroic mirrors 220a and 220b, is reflected by the dichroic mirror 242b, is reflected by the dichroic mirror 244, is reflected by the polarizing beam splitting prism 246b, and is monocrystalline. The panel 250b reflects, penetrates the polarization beam splitter 246b, penetrates the X稜鏡 248, and passes to the projection lens 260. The blue light beam 212b emitted by the blue laser light source 210b is sequentially reflected by the dichroic mirror 220a, penetrates the dichroic mirror 220b, penetrates the lens arrays 230a and 230b, is reflected by the dichroic mirror 242b, and penetrates the dichroic mirror. 244 is reflected by the polarization beam splitter 246c, reflected by the single crystal germanium liquid crystal panel 250c, penetrates the polarization beam splitter 246c, and is reflected by the X 稜鏡 248 to the projection lens 260. Since the three single crystal germanium liquid crystal panels 250a, 250b, 250c of the conventional three-piece single crystal germanium liquid crystal projector 200 can process the red light beam 212r, the green light beam 212g and the blue light beam 212b at the same time, the red color is The laser light source 210r, the green laser light source 210g, and the blue laser light source 210b are continuously illuminated, and the three-piece single crystal germanium liquid crystal projector 200 can provide a high brightness image surface. However, since the single crystal germanium liquid crystal panel is expensive, the use of three single crystal germanium liquid crystal panels 250a, 250b, 250c results in a high cost of the three-piece single crystal germanium liquid crystal projector 200. This 8 M331685 97-01-22 outer's use of two single crystal solar panels 25〇a, 250b, 250c also makes the two-piece single crystal germanium liquid crystal projector 2〇〇 bulky. [New Content] This creation provides an image processing system that is compact in structure, small in size, and low in cost. The present invention provides a projection apparatus which has the advantages of lower cost and higher brightness of the image plane projected thereon, and can have a smaller volume. An embodiment of the present invention provides an image processing system including a split light unit, a first light valve, and a second light valve. The split light unit includes a first polarization splitting unit and a second polarization splitting unit. The second polarization splitting unit is disposed to intersect with the first polarization splitting unit. The first light valve is disposed on one side of the split light unit. The second light valve is disposed on the other side of the split light unit and is opposite to the first light valve. The first polarization splitting unit is adapted to reflect a first illumination beam having a first polarization direction to the first light valve. After the first illumination beam is reflected by the first light valve, it is converted into a first image beam having a second polarization direction, and the first image beam is reflected by the second polarization beam splitting unit. The second polarization splitting unit is adapted to reflect a second illumination beam having a second polarization direction to the second light valve. After the second illumination beam is reflected by the second light valve, it is converted into a second image beam having a first polarization direction, and the second image beam is reflected by the first polarization beam splitting unit. In an embodiment of the present invention, the split light unit further includes a first prism, a first turn, a third turn, and a fourth turn. The second clock is connected to the mirror. The second prism is adjacent to the second prism. The fourth prism abuts the 9th M331685 97-01-22 three 稜鏡 and the first 稜鏡. The first polarization splitting unit is disposed between the first pupil and the prism, and is not between the second prism and the fourth prism. The second polarization splitting unit is disposed between the second turn and the third turn, and is disposed between the fourth turn and the first turn. The first polarization splitting unit and the second polarization splitting unit are, for example, polarization splitting films, respectively. The first light valve and the second light valve are, for example, an early crystal dream liquid crystal panel.

In an embodiment of the present invention, the colors of the first illumination beam and the second illumination beam are different from each other. The first polarization direction may be substantially perpendicular to the second polarization direction. The image processing system may further include a one-half wave plate disposed between the first light valve and the split light unit or between the second light valve and the split light unit. An embodiment of the present invention further provides a projection apparatus including

A light source module, a second light source module, a light homogenizing element, the image processing system, and a projection lens. The first light source module is adapted to provide a first illumination beam. The second light source module is adapted to provide a second illumination beam. The light is homogenized by 70 pieces disposed on the light path of the first illumination beam and the second illumination beam. The splitting unit of the image processing system is placed on the light path from the light homogenizing element 2, the wire and the second illumination beam. The projection lens is disposed on the optical path of the first image beam from the dichroic beam splitting unit and the second image beam from the dichroic beam splitting unit. In the case of the present invention, the first light source module is, for example, a laser light source, for example, a laser light source. The projection device may further comprise a combination of a light beam and a third upper portion and is located between the first light source module and the light-synchronizing element beam = M331685 97-01-22 Light homogenizes between components. In an embodiment of the present invention, the first light source module includes a first light emitting body and a polarization conversion system (PCS). The second light source module includes a second light emitting diode. And a first polarization conversion system, the light emitted by the first light-emitting diode is converted into a first illumination beam having a first polarization direction, and the second light-emitting diode is emitted by the first polarization conversion system. After passing through the second polarization conversion system, the light is converted into a second illumination beam having a second polarization direction. In one embodiment of the present invention, the projection apparatus further includes a third set of light sources adapted to provide a third illumination beam. The third illumination beam passes through the light homogenizing element. The third illumination beam from the light homogenizing element and having the first polarization direction is sequentially reflected by the first polarization beam splitting unit and emitted by the first light valve, and the second illumination beam is converted into a light after being reflected by the first light valve. a third image beam having a second offset, direction. The third image beam is reflected by the second polarization splitting unit to the projection lens. The first illumination light Zhaoxian County fresh three pay beams _ color are different from each other. In addition, the projection device may further include a driving circuit electrically connected to the first, the source module, the second light source module and the third light source module. The driving circuit is adapted to drive the first light source module and the third light source module, so that the first light source module and the third light source module alternately provide the first illumination beam and the third illumination beam. The driving circuit is also adapted to continuously drive the second light source module such that the second light source provides a second illumination beam. Furthermore, the projection device may further comprise a light combining unit disposed on the light path of the first illumination beam and the second illumination light, and located in the first light source module and the light average sentence, 11 M331685 97 -01-22

Between the components, between the second light source module and the light homogenizing component, and between the second light source module and the light homogenizing component. Compared with the overall volume of the split light system and the two single crystal germanium liquid crystal panels in the conventional three-piece single crystal germanium liquid crystal projection device, the structure of the IV image processing system is simpler and smaller than that of the present embodiment. small. In addition, since the projection apparatus using the image processing system has only two light valves, the cost and volume are lower than that of the two-chip single crystal germanium liquid crystal projector. Moreover, since the projection device has a light valve that is assigned to the illumination beam that is incident on it than the conventional single-chip single crystal germanium liquid crystal projection device, the projection of an illumination beam onto the light valve can be longer. Further, the brightness of the image plane projected by the projection device is higher than that projected by the monolithic single crystal second liquid crystal projector. The above and other objects, features and advantages of the present invention will become more apparent and appreciated. The following is a description of the preferred embodiment and the accompanying drawings.

[Embodiment] The following description of each of the embodiments is provided with reference to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directions mentioned in this creation are used—for example, “upper”, “down”, “previous, backward”, etc.: only refer to the direction of the additional schema, so the 7-way phrase used right is used to illustrate, It is not intended to limit this creation. #: Refer to FIG. 3 'This creation - the projection device of the embodiment includes a light source module 410, a second light source module 42A, a light homogenizing element=, a second image processing system, and a projection lens 44G. . The first source, and 〇, is adapted to provide a first illumination beam 412. The second light source module alone 12 M331685 97-01-22 is adapted to provide a second illumination beam 422. In this embodiment, the first light source module 410 and the second light source module 420 are respectively laser light sources, and the first light source module 410 is adapted to provide a first illumination beam 412 having a first polarization direction 〇1. The second light source module 420 is adapted to provide a second illumination beam 422 having a second vibration direction D2. The light homogenizing element 430 is disposed on the optical paths of the first illumination beam 412 and the second illumination beam 422. In the present embodiment, the light homogenizing element 430 is, for example, a light integrating column. However, in other embodiments, the light homogenizing element can also be a lens array or other optical element suitable for homogenizing the beam. In addition, in the embodiment, the projection device 400 further includes a light combining unit 450 disposed on the light path of the first illumination beam 412 and the illumination beam 422, and located in the first light source module 410 and uniform in light. Between the elements 430, and between the second source mode = 420 and the light homogenizing element 430, such that the first illumination beam 412 and the second illumination beam 422 from different sources are incident along the substantially identical optical path. Element 430. In particular, the light combining unit 450 is, for example, a dichroic mirror adapted to transmit the first illumination beam 412 to the light homogenizing element 430 and to reflect the second illumination beam 422 to the light homogenizing element. 430. The image processing system 300 includes a split light unit; 31〇, a first photo valve 320, and a second light valve 330. The light combining unit 31 is disposed on the optical path of the first illumination beam 412 and the second illumination beam 422 from the light homogenizing element 430, and includes a first polarization splitting unit 312 and a second polarization splitting unit 314. The second polarization splitting unit 314 is disposed to cross the first polarization splitting unit 312. The first light valve 320 is disposed on the side of the split light sheet 13 M331685 97-01-22 element 310. The light valve 330 is disposed on the other side of the split light unit 31A and is opposed to the first light valve 320. In this embodiment, the split light unit 31 can further include a first turn 316a, a second turn 316b, a third turn 316c, and a fourth prism 316d. The second volume 316b is adjacent to the first volume 316a. The third port 3i6c is adjacent to the second port 316b. The fourth port 316d is adjacent to the third port 3i6c and the first port 316a. The first polarization splitting unit 312 is disposed between the first 稜鏡 316a and the second 稜鏡 316b and is disposed between the third 稜鏡 316c and the fourth 稜鏡 316d. The second polarization splitting unit 314 is disposed between the second 316 316b and the second 稜鏡 316c and is disposed between the fourth 稜鏡 3 and the first 軚 mirror 316a. The first polarization splitting unit 312 and the second polarization splitting sheet = 314 are, for example, polarization splitting films, respectively. Specifically, the first polarization splitting unit 312 is plated on the surface of the first crucible 31 such as the fourth crucible 316d or the surface of the second crucible 316b and the third crucible 3i6c, for example. The second polarization splitting unit 314 is shoveled on the surface of the first mirror 31 such as the second 稜鏡 316b or the surface of the third 稜鏡 316 and the fourth 稜鏡 316d, for example, by a coating method. However, in other embodiments, the polarizing beam splitting unit and the first: polarizing beam splitting unit may also be a grid polarizing beam splitter (wire grid type p〇larizing) or its appropriate polarization beam splitter. The split light unit does not need to have a prism to support the thumb polarizing beam splitter. The first polarization splitting unit 312 is adapted to emit light having a first polarization direction Di and is adapted to penetrate light having a second polarization direction D2. The second polarization splitting unit 314 is adapted to reflect light having the second polarization direction D2 M331685 97-01-22 and is adapted to penetrate light having the first polarization direction D1. In the present embodiment, the 'first polarization direction D1 is substantially perpendicular to the second polarization direction = 2. Specifically, the first polarization direction D1 is, for example, an s-polarization direction, and the second polarization direction D2 is, for example, a p-polarization direction. However, in other embodiments, the first polarization direction and the second polarization direction may also be p-polarization square 2 and S polarization direction, respectively, or other suitable polarization directions, respectively. The first polarization splitting unit 312 is adapted to reflect the first illumination beam 412 having the first polarization direction D1 % to the first light valve 320. The first light valve 320 is, for example, a single crystal germanium liquid crystal panel, and the first illumination light beam 412 is reflected by the first light valve 320. After the first illumination beam 412 is reflected by the first light valve 32, it is converted into a first image beam 412" having a second polarization direction D2, and the first image beam 412 is reflected by the second polarization beam splitting unit 314. The third second polarization splitting unit 314 is adapted to reflect the second illumination beam 422 having the second polarization direction D2 to the second light valve 33A. The second light valve 33 〇 is, for example, a single crystal germanium liquid crystal panel, and the second illumination light beam 422 is reflected by the second light valve 330. After the second illumination beam 422 is reflected by the second light valve 33, it is converted into a second image beam 422 having a first polarization direction D1, and the second image beam 422 is reflected by the first polarization beam splitting unit 312. In the tenth embodiment, the image processing system 3 further includes a half-wave plate 340 disposed between the second light valve 330 and the split light unit 310. After the second illumination beam 422 from the diverging unit 310 passes through the half wave plate 340, its polarization direction changes from the second polarization direction D2 to the first polarization direction D. Therefore, the second illumination beam 422 is incident. The polarization direction of the second light valve 330 is the same as the polarization direction of the first illumination beam 412 when entering the first 15 M331685 97-01-22, the valve 320 is the first polarization direction 1)1. In this way, the light valve 3 and the light valve 330 can be the same type of light valve that handles the same polarization state. However, in other embodiments, the image processing system may not include a half wave plate, and the first aperture and the second light valve may be different types of light valves of different polarizations. In addition, in other embodiments, the two-way wave plate may also be disposed between the first light valve and the split light unit. In the embodiment, the second light valve 330 converts the second illumination beam 422 having the first polarization side I to ft into the second image beam 422 having the second polarization direction D2. After passing through the half wave plate 340, the second image beam 422 changes its polarization direction from the second polarization direction to the first vibration direction D. Then, the second image beam 422 is transmitted to the split light unit 310. On the other hand, the first light valve 32A converts the first illumination beam 412 having the first polarization direction D1 into the first image beam 412 having the second polarization direction D2, and the first having the second polarization direction D2. The image beam 412' is transmitted to the split light unit 31A. It should be noted that the present invention does not limit that the first light valve 32 〇 and the second light valve 330 must be single crystal 矽 liquid crystal panels. In other embodiments, the first light valve and the second light valve may also be Digital micromirror device (micr〇-mirror device, DMD) or other suitable reflective light valve. The projection lens 440 is disposed on the optical path of the first image beam 412' from the second polarization beam splitting unit 314 and the second image beam 422' from the first polarization beam splitting unit 312 to combine the first image beam 412 with The second image beam 422 is projected onto a screen (not shown). In this embodiment, the first image beam 412 reflected by the first polarization beam splitting unit 314 and the second image beam 422 reflected by the first polarization 16 M331685 97-01-22 vibration splitting unit 312 may be substantially the same. The light path is passed to the projection lens 440. In addition, the colors of the first illumination beam 412 and the second illumination beam 422 may be different from each other such that the first image beam 412' and the second image beam 422 project a color plane on the screen. For example, the first illumination beam 412 and the second illumination beam 422 are, for example, blue and yellow, but the present invention is not limited thereto. In this embodiment, the projection device 400 further includes a driving circuit 460 electrically connected to the first light source module 410 and the second light source module 420 to drive the first light source module, and 410 The light source module 420 continues to emit light. However, in other embodiments, the driving circuit may also drive the first light source module and the second light source module to intermittently emit light. Furthermore, the first polarization splitting unit 312 can be substantially perpendicular to the second polarization splitting unit 314 to cause the illumination beam (eg, the first and second illumination beams 412, 422) to enter the direction of the split light unit 31〇. The image beam (e.g., the first and second image beams 412', 422') exits from the splitting unit 31 is substantially the same. However, in other embodiments, the first polarization splitting light may also be at other angles than the second polarization splitting unit. Compared with the overall volume of the split light system and the three single crystal germanium liquid crystal panels in the conventional three-piece single crystal germanium liquid crystal projector, the image processing system 300 of the present embodiment has a relatively compact structure and a small volume. . In addition, since the image processing system 300 has only two light valves (i.e., the first light valve 32A and the second light valve 330), the cost is low, and the cost of the projection device 400 using the image processing system 3〇〇 is The volume is lower than that of the three-piece single crystal germanium liquid crystal projection device. Moreover, since the projection device 4 多 has a light valve to distribute the illumination beam projected thereon than the conventional single-chip single crystal 矽 liquid crystal 17 M331685 97-01-22 projection device, an illumination beam is projected to The time on the light valve can be longer, so that the utilization rate of the light source by the projection device 400 is higher, and the brightness of the image plane projected by the projection device 4 is more projected than that of the monolithic single crystal liquid crystal projection device. Out of high. Referring to FIG. 4, the projection device 4A of another embodiment of the present invention is similar to the above-described projection device 400 (please refer to FIG. 3), and the difference between the two is as follows. The projection device 400a of the present embodiment further includes a third light source module 47A adapted to provide a second illumination beam 472. In the present embodiment, the third light source module 470 is a laser light source adapted to provide a third illumination beam 472 having a first polarization direction D1. The third illumination beam 472 passes through the light homogenizing element 430. The third illumination beam 472 from the light homogenizing element 430 and having the first polarization direction D1 is sequentially reflected by the first polarization splitting unit 312 and reflected by the first light valve 320. After the third illumination beam 472 is reflected by the first light valve 32, it is converted into a third image beam 472' having a second polarization direction D2. The third image beam 472' is reflected by the second polarization splitting unit 314 to the projection lens 440. In this embodiment, the third image beam 472 reflected by the second polarization beam splitting unit 314 is transmitted to the projection lens 440 along the substantially same optical path as the first image beam 412 and the second image beam 422'. The colors of the first illumination beam 412, the second illumination beam 422, and the third illumination beam 472 may be different from each other. In the present embodiment, the first illumination beam 412, the first illumination beam 422, and the third illumination beam 472 are, for example, red, blue, and green, respectively. Thus, the projection device 400a can project a full-color pupil on the screen. However, this creation does not limit the colors of the first, second, and third shots of the M Beam. In other embodiments, the first, second, and third illumination beams can also be other colors. In the present embodiment, the light combining unit 45A is disposed on the light path of the third illumination beam 472 and is disposed on the light path of the first illumination beam 412 and the second illumination beam 422. The third light source module 470 is between the light homogenizing element 430 and the light. Specifically, the light combining unit 45A may include dichroic mirrors 452 and 454. The dichroic mirror 452 is configured to transmit the first illumination beam 412 from the first light source module 41〇 and the second illumination beam 472 from the third source module 47〇 to the color separation along substantially the same optical path. Mirror 454. The dichroic mirror 454 is for transmitting the first and third known beams 412, 472 from the dichroic mirror 452 and the second illumination beam 422 to the light homogenizing element 430 along substantially the same optical path. In this embodiment, the driving circuit 460a is electrically connected to the second light source module 470 in addition to being electrically connected to the first light source module 410 and the second light source module 420. The driving circuit 460a alternately drives the first light source module 410 and the second light source weight group 470' to alternately provide the first light source 412 and the third light source module 470 with the first illumination beam 412 and the third illumination beam. 472. The driving circuit 460a can continuously drive the second light source module 42A to enable the second light source module 420 to continuously provide the second illumination beam 422. The projection device 4A of the present embodiment has the advantages of the above-described projection device 400 (please refer to Fig. 3). Compared with the conventional monolithic single crystal germanium liquid crystal projector, since the projection device 400a has a light valve to be distributed to the illumination beam projected thereon, the time for an illumination beam to be projected onto the light valve can be longer. Therefore, the utilization rate of the light source by the projection device 400a is high, and the projection M331685 97-01-22 is set to 40 as the brightness of the projected image plane is high. In addition, since the shirting device 400a has red, green, and blue light sources, the projection device 400a can provide a full-color image plane with rich colors and high brightness. Furthermore, the embodiment can arrange the light source with the lowest brightness as the second light source module 420' to make up for the lack of brightness by continuously turning on the second light source module 420. Tables 1 and 2 and Table 3 below respectively show examples of simulated data of a conventional monolithic single crystal germanium liquid crystal projector, a conventional three-chip single crystal germanium liquid crystal projector, and the projection apparatus 400a of the present embodiment. 5A, 5B and 5C are the duty cycles of the respective color light sources of the π-table, the second and the third. It is worth noting that the data poor materials and figures listed in Table 3 and Figure 5c are only for smoking, and are not intended to limit the creation. Anyone who has a common knowledge of the technical field of the art can refer to this creation, and can count on his dreams (for appropriate changes, but it should still belong to the scope of this creation. @一:单片) Laser source Laser power (Watts) .——------ Laser brightness) Working cycle actual power (Watts) Equivalent brightness (Lumens) Red, green and blue brightness ratio Red — 2 ———----- ^3 〇〇33.0% 0.66 99 2.51 Green---- 2 ------. __12〇0 27.5% 0.55 330 8.35 Blue ___— 2 -------- ^i〇〇39.5% 0.79 39.5 1.00 total brightness: 462 lumens (Table 2: three-piece) 20 M331685 97-01-22

(Table III··This embodiment)

Electro-radiation source laser power (Watt) Laser exemption (lumen) Working cycle actual power (Watts) Equivalent brightness (Lumens) Red, green and blue-free ratio than the first light source module (red) 2 300 53% 1.06 159 2.4 Third light source module (green) 2 1200 47% 0.94 564 8.4 Second light source module (blue) 2 100 _ 0.67 67 1.0 Total brightness: 790 lumens laser source laser power (watts) Laser brightness (lumen) Working cycle actual power (Watts) Equivalent brightness (Lumens) Red, green and blue free than red 2 300 - 1.67 250 2.5 Green 2 1200 - 1.38 830 8.3 Blue 2 100 - 2 100 1.0 Total brightness: 1180 lumens please refer to Table 1 to Table 3 and Figures 5A to 5C, the values of each column in Tables 1 to 3 are sequentially from left to right, the power of the laser source in the case of generally continuous illumination, and the laser source corresponding to the power source at this power. Brightness, the working period of this 21 M331685 97-01-22 laser light source, working week, 铷μ丄,

The source is the performance work (ie continuous light) without interruption. The color temperature value is 16000 § Two white light can be 2.5:8.3:1 red, green and blue light at the actual power of this working cycle, here and red, green and blue laser light source:, π From the table to the end of the second block of the red, green and blue brightness ratio, we can see that the two projection devices can project the pure temperature value (- π shirt 16000K white face. ^, please refer to Figure 4 and Figure 5A to Figure 5C The vertical axis in FIGS. 5A to 5C represents the normalized light intensity of each color laser light source, and the normalized reference is the intensity of light emitted by the respective color laser light sources under normal conditions, and the bar axis represents time. It can be seen from Fig. 5A that the laser light sources of the single-chip single crystal silicon liquid crystal projection device are alternately opened and closed in every cycle. As can be seen from Fig. 5β, the laser of each color of the three-piece single crystal silicon liquid crystal projection device The light source is continuously turned on at the same time every week. As shown in Fig. 5C, the projection device 4 of the embodiment, for example, the first and third light source modules 410, 470 are alternately opened and closed in each cycle, and the second light source mode Group 420 is continuously turned on in each cycle. Data from Tables 1 through 2 It is known that the ratio of the total effective luminance of the source of the monolithic monocrystalline liquid crystal projection device, the three-type single crystal germanium liquid crystal projection device and the projection device 4〇〇a of the present embodiment is 1·00··2·55· · 1.71, it can be verified that the brightness of the image projected by the projection device 400a of the present embodiment is higher than that projected by the single-chip single 22 M331685 97-01-22 spar liquid crystal projection device, and the present embodiment The projection device 400a" is lower than that of the three-piece single crystal germanium liquid crystal projector. It is worth noting that the creation does not limit the first, second and third light source modes, "Ο,··· In other embodiments, the first, second, and third light source modules may also include a light emitting diode light source or other suitable light source. The following will be described in detail with reference to FIG. The projection device 4〇〇b of still another embodiment of the present invention is similar to the above-described projection device 400a (please refer to FIG. 4), and the main differences between the two are as follows. In the projection device 4〇〇b of the present embodiment The first light source module 410b includes a first light emitting diode 414 and a first polarization conversion The system 416 includes a second light emitting diode 424 and a second polarization conversion system 426. The third light source module 470b includes a third light emitting body 474 and a first polarization conversion system 416. The third light source module 470b shares the first polarization conversion system 416 with the first light source module 410b. The light 412b emitted by the first light-emitting diode 414 is converted into unpolarized light by the first polarization conversion system 416. a first illumination beam 412b having a first polarization direction D1. The light 422b' emitted by the second LED 424 is converted by the second polarization conversion system 426 into a second polarization direction D2. The second illumination beam 422b. The light 472b' emitted by the third light-emitting diode 474 passes through the first polarization conversion system 416, and converts the unpolarized light into a first illumination beam 472b having a first polarization direction D1. In this embodiment, the first The polarization conversion system 416 is disposed between the dichroic mirror 452 and the dichroic mirror 454, and the second polarization conversion system 426 is disposed with the 23 M331685 97-01-22 placed in front of the second LED 424, but this creation Not limited to this. In other embodiments, the first light emitting diode and the third light emitting diode may also be respectively configured with a polarization conversion system to convert the light into a first illumination beam and a third illumination beam having a first polarization direction. . In addition, in this embodiment, the fronts of the first, second, and third light-emitting diodes 414, 424, and 474 may be respectively provided with lenses 418, 428, and 478 to enhance the light rays 412b', 422b', and 472b'. Collimation, or convergence of rays 412b, 422b, and 472b'. The projection device 4B of the present embodiment also has the advantages and effects of the above-described projection device 400a (please refer to Fig. 4), and will not be repeated here. In addition, the first and second light source modules 41A, 42A of the projection device 400 in FIG. 3 may also each include a light emitting diode and a light path disposed on the light emitted by the light emitting diode. A polarization conversion system replaces the laser source to form another projection device. In summary, the image processing system of the present embodiment is relatively simpler than the integrated volume of the conventional three-chip single crystal germanium liquid crystal projector and the three single crystal germanium liquid crystal panels. And the volume is small. In addition, since the image processing system only has two light valves (ie, the first light valve and the second light valve), the cost is low, and the cost and volume of the projection device using the image processing system are smaller than that of the three-piece single crystal germanium. The liquid crystal projection device is low. Furthermore, since the projection device of one embodiment of the present invention has a light valve to distribute the illumination beam projected thereon than the conventional monolithic single crystal silicon liquid crystal projection device, an illumination beam is projected onto the light valve. The time of the image device can be made longer, so that the brightness of the image surface projected by the projection device of the present embodiment is higher than that of the single-chip single crystal stone 24 M331685 97- 01-22 The height projected by the crystal projection device. Qualified implementation _ as shown above, but it is not used within the ‘ when it can be made a little more change and run brocade, whichever is. The scope of the patent application is also defined by the author: 2

The pure title is only the right to assist in the search for exclusive elements. _Unlimited this [Simplified description of the drawing] Figure 1 is a sketch of a conventional monolithic single crystal lithography liquid crystal projection device.囷2 is a schematic view of the structure of a two-piece single crystal silicon liquid crystal projector. FIG. 3 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a projection apparatus according to another embodiment of the present invention. 5A to 5C respectively illustrate the duty cycles of the light sources of the projection apparatus of Fig. 4A. FIG. 6 is a schematic structural view of a projection apparatus according to still another embodiment of the present invention. [Description of main component symbols] "100: Monolithic single crystal germanium liquid crystal projector 110: illumination system 112b, 210b: blue laser light source 112g, 210g: green laser light source 25 M331685 97-01-22 112r, 210r: Red laser light source 113': image light beams 113b, 212b: blue light beams 113g, 212g: green light beams 113r, 212r · red light beams 114a, 114b, 220a, 220b, 242a, 242b, 244, 452, 454: dichroic mirror 116: Light integration column 120, 246a, 246b, 246c · Polarization beam splitter 130, 250a, 250b, 250c · Single crystal solar panel 140, 260, 440 · Projection lens 200 · Three-piece single crystal矽LCD projection device 230a, 230b: lens array 240: split light system 242: color separation unit 248 · · X稜鏡300: image processing system 310: split light unit 312: first polarization splitting unit 314 Polarization beam splitting unit 316a: first 稜鏡 316b · 苐 prism 316c · · third 稜鏡 316d : fourth 稜鏡 26 97-01-22 M331685

320: first light valve 330: second light valve 340: half wave plate 400, 400a, 400b · projection device 410, 410b: first light source module 412, 412b: first illumination beam 412': An image beam 412b, 422b', 472b' · ray 414: first light emitting diode 416: first polarization conversion system 418, 428, 478: lens 420, 420b: second light source module 422, 422b · Second illumination beam 422': second image beam 424: second light-emitting diode 426: second polarization conversion system 430: light homogenizing element 450, 450a · light combining unit 460, 460a: driving circuit 470, 470b: The third light source module 472, 472b · the third illumination beam 472': the third image beam 474: the third LED D1: the first polarization direction D2: the second polarization direction 27

Claims (1)

.M331685 97-01-22 IX. Patent application scope: Centering, including ··· An image processing system applied to a projection unit with a light combining unit, comprising: a first polarization beam splitting unit; fork configuration; The two polarization splitting unit 'interacts with the first polarization splitting unit a first light valve disposed on the side of the split light unit; and a second light valve disposed on the other side of the split light unit and opposite to the light valve of the dipole, wherein the first light valve A polarization splitting unit is adapted to reflect a directional first-illumination beam to the first aperture, and after the reflection of the light-light valve, the image is converted into a second-polarized direction-image beam. The job-image beam is inversely reflected by the second polarization splitting unit, 'the second polarization splitting unit is adapted to reflect the second polarization direction=the second illumination beam to the second thin, the second illumination Beam is After being reflected by the second light valve, it is converted into a second image beam having the first polarization direction, and the second image beam is reflected by the first polarization beam splitting unit. 2. The image processing system of claim 2, wherein the split light unit further comprises: a first one; a second one adjacent to the first one; Adjacent to the second crucible; and a fourth crucible adjacent to the third crucible and the first crucible, 28 M331685 97-01-22 wherein the first polarization splitting unit is disposed on the first edge Between the mirror and the second weir, and disposed between the third weir and the fourth weir, and the second polarizing beam splitting unit is disposed between the second weir and the third weir And is disposed between the fourth raft and the first raft. The image processing system of claim 2, wherein the first polarization splitting unit and the second polarization splitting unit are each a polarization splitting film. The image processing system of claim 1, wherein the first light valve and the second light valve are respectively a single crystal solar panel. 5. The image processing system according to claim 1 The color of the first illumination beam and the second illumination beam are different from each other. In the image processing system of claim i, the first polarization direction is substantially perpendicular to the second polarization direction. 1 . The image processing system of claim 3, further comprising a wave plate disposed between the first light valve and the light splitting unit or disposed in the second light valve and the minute Between the light unit. 8. A projection device comprising: an f-light group, adapted to provide a -first illumination beam; - a second optical group adapted to provide - a 'light homogenization element, coupled to the 钵筮a light beam path of the bright beam; a light beam and the second image processing system, including: the first light path of the beam and the light beam of the second light disposed in the county In the above, the 29 M331685 97-01-22 light unit comprises: a first polarization splitting unit; a second polarization splitting unit, which is arranged to intersect with the first polarization splitting unit; And a second light valve disposed on the other side of the split light unit and opposite to the first light valve, wherein the first polarization splitting unit is adapted to The first illumination beam having a first polarization direction is reflected to the first light valve, and the first illumination beam is converted by the first light valve into a first image beam having a second polarization direction. And the second centroid beam is reflected by the 5th polarization splitting unit, and the second polarizing beam splitting unit is adapted to reflect the second illumination beam having the second polarization direction to the second light valve, the second illumination beam After being reflected by the first:, the valve is converted into a second having the first polarization direction An image beam, wherein the second image beam is reflected by the first polarization beam splitting unit; and a less-projection lens disposed on the first beam from the second polarization beam splitting unit and the first beam from the first polarization beam splitting unit The second image beam is a projection device according to claim 8, wherein the source module is a laser light source, and the second light source module is also - Ray 10, as claimed in claim 8 The projection device of the present invention, wherein the second light source module comprises a first light emitting diode and a first polarization conversion system 30 M331685 97-01-22, and the second light source module comprises a second light emitting diode a first body and a second polarization conversion system, the light emitted by the first light-emitting diode is converted into the first illumination beam having the first polarization direction by the first polarization conversion system, and the second illumination After the light emitted by the diode passes through the second polarization conversion system, the light is converted into the second illumination beam having the second polarization direction. The projection device of claim 8, wherein the split light unit further comprises: a first prism; a second turn adjacent to the first turn; a third turn adjacent to the a second 稜鏡; and a fourth 稜鏡, adjacent to the third 稜鏡 and the first 稜鏡, wherein the first polarization splitting unit is disposed between the first 稜鏡 and the first 稜鏡, And disposed between the third turn and the fourth turn, and the second polarized light splitting unit is disposed between the second turn and the third turn, and is disposed on the fourth turn Between the first ones. The projection device of claim 5, wherein the first polarization splitting unit and the second polarization splitting unit are each a polarization splitting film. The projection device of claim 8, wherein the first light valve and the second light valve are respectively a single crystal solar panel. The projection device of claim 8, wherein the color of the second light beam and the second illumination light beam are different from each other. One person 15 (5) The projection device according to claim 8 of the patent application, further includes . a light sheet 7L' gi is disposed on the optical path of the first illumination beam and the second illumination beam 31 M331685 97-01-22, and is located between the first light source module and the light homogenizing element, and is located at the Between the second light source module and the light homogenizing element. The projection device of claim 8, further comprising a third light source module adapted to provide a third illumination beam, the third illumination beam passing through the light homogenizing component, from the uniformity of the light The third illumination beam having the first polarization direction is sequentially reflected by the first polarization beam splitting unit and reflected by the first light valve, and the third illumination beam is converted by the first light valve and then converted a third image beam having the second polarization direction, and the third image beam is reflected by the second polarization beam splitting unit to the projection lens, wherein the first illumination beam, the second illumination beam, and the 5th The colors of the two known beams are different from each other. The projection device of claim 16, further comprising a driving circuit electrically connected to the first light source module, the second light source module and the third light source module, wherein the driving circuit Suitable for alternately driving the second light source group and the third light source module, so that the first light source module and the second light source module alternately provide the first illumination beam and the third illumination light and the driving The circuit is adapted to continuously drive the second light source module to enable the second light source module to continuously and continuously provide the second illumination beam. The projection device of claim 16 further includes: the two-light unit 'g is disposed on the light path of the first illumination beam, the second illumination beam, and the third illumination beam, and is located Between the first light source module and the homogenizing element, and between the second light source module and the light homogenization % are located between the third light source module and the homogenizing element. The projection device of claim 8, wherein the 32 M331685 97-01-22 first polarization direction is substantially perpendicular to the second polarization direction. The projection device of claim 8, wherein the image processing system further comprises a half wave plate disposed between the first light valve and the split light unit, or disposed on the The second light valve is between the split light unit. 33