CN110471246B

CN110471246B - Optical machine adjusting system and method

Info

Publication number: CN110471246B
Application number: CN201810445206.3A
Authority: CN
Inventors: 顾佳琦; 郭祖强; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2018-05-10
Filing date: 2018-05-10
Publication date: 2021-02-02
Anticipated expiration: 2038-05-10
Also published as: WO2019214275A1; CN110471246A

Abstract

The invention provides an optical machine adjusting system and method, and relates to the technical field of projection. This ray apparatus governing system includes: a light source; the pretreatment assembly is arranged opposite to the light source at intervals and comprises a light absorption array, a light homogenizing unit, a polarization unit and a first condenser lens, wherein the light absorption array, the light homogenizing unit, the polarization unit and the first condenser lens are sequentially arranged from the object side to the image side; the light splitting assembly is arranged on the image side of the first condenser lens; and the projection assembly is arranged at the image side of the light splitting assembly and comprises a light combining unit and a lens. The invention can effectively improve the accuracy of adjusting the edge leakage of the 3LCD optical machine, improve the yield and reduce the cost.

Description

Optical machine adjusting system and method

Technical Field

The invention relates to the technical field of projection, in particular to an optical machine adjusting system and method.

Background

In the current 3LCD optical-mechanical system, the illumination light spots incident on the RGB three-way LCD Panel are larger than the Panel itself, one reason is that the edges of the illumination light spots are not sharp (have virtual edges), and the illumination light spots cannot be used for imaging (the virtual edges are subtracted from the actual light spot sizes to form effective light spots); another reason is that the optical machine may have deformation which is difficult to predict when the optical machine is assembled into the whole machine, which causes the optical path to be skewed, and if the illumination spot is as large as Panel, edge leakage is easy to occur. Therefore, in the optical path design, the illumination spot incident on the RGB three-way Panel needs to be larger than the Panel itself.

In the existing 3LCD light machine adjustment, the center of each RGB monochromatic light spot is adjusted to coincide with the center of an effective picture, so that even if the deformation after the light machine is installed in the light machine is difficult to predict, the adjustment margins of the upper part, the lower part, the left part and the right part are reasonable and symmetrical, and the poor edge leakage of the light machine and the light machine efficiency are controlled.

However, the conventional method can only judge whether the RGB monochromatic spots coincide with each other by edge coincidence, and because the edge imaging and uniformity of each monochromatic spot are inferior to those of the spot center, the poor imaging (virtual edge) of the spot edge may cause an error in manual judgment. Even if the judgment is carried out based on the coincidence of the light spot center and the effective picture center, because the actual size of each RGB single-color light spot is larger than that of the effective picture, whether the centers of the RGB three light spots coincide with the effective picture center cannot be accurately judged during adjustment. If the adjustment cannot be accurately carried out until the adjustment is overlapped, the adjustment allowance is asymmetric, and the risk of poor edge leakage after the adjustment is carried out in the whole machine is high.

Disclosure of Invention

The present invention is directed to a light engine adjusting system, which can effectively improve the above-mentioned problems.

The embodiment of the invention is realized by the following steps:

in a first aspect, an embodiment of the present invention provides an optical machine adjustment system, which includes a light source; the pretreatment assembly is arranged opposite to the light source at intervals and comprises a light absorption array, a light homogenizing unit, a polarization unit and a first condenser lens, wherein the light absorption array, the light homogenizing unit, the polarization unit and the first condenser lens are sequentially arranged from the object side to the image side; the light splitting assembly is arranged on the image side of the first condenser lens; and the projection assembly is arranged on the image side of the light splitting assembly and comprises a light combining unit and a lens, light emitted by the light source sequentially passes through the preprocessing assembly and the light splitting assembly to form a plurality of monochromatic light spots with a center provided with a light-free area, and then sequentially passes through the light combining unit and the lens to be projected to the outside.

In a preferred embodiment of the present invention, the light splitting element includes a first light splitting mirror, a second light splitting mirror, a first monochromatic light path, a second monochromatic light path, and a third monochromatic light path, light emitted from the first light splitting mirror enters the first monochromatic light path through the first monochromatic light split by the first light splitting mirror, another part of mixed light split by the first light splitting mirror is split into second monochromatic light and third monochromatic light through the second light splitting mirror, the second monochromatic light enters the second monochromatic light path, the third monochromatic light enters the third monochromatic light path, light respectively output from the first monochromatic light path, the second monochromatic light path, and the third monochromatic light path is combined by the light combining unit, and then is projected to the outside through the lens.

In a preferred embodiment of the present invention, the first monochromatic light path includes a first reflecting mirror, a second condensing mirror, a first polarizer, a first liquid crystal panel and a first analyzer, which are sequentially disposed from an object side to an image side.

In a preferred embodiment of the present invention, the second monochromatic light path includes a third spectroscope, a second polarizer, a second liquid crystal panel, and a second analyzer, which are sequentially disposed from the object side to the image side.

In a preferred embodiment of the present invention, the supporting end extends with a buffer portion, and the third monochromatic light path includes a first relay lens, a second reflecting mirror, a second relay lens, a third reflecting mirror, a fourth condensing mirror, a third polarizer, a third liquid crystal panel, and a third analyzer, which are sequentially disposed from the object side to the image side.

In a preferred embodiment of the present invention, the light equalizing unit includes a first fly-eye lens and a second fly-eye lens, which are sequentially disposed from an object side to an image side, the light absorbing array is disposed on the object side of the first fly-eye lens, and each of the first fly-eye lens and the second fly-eye lens is provided with a corresponding microlens array composed of a plurality of microlens units.

In a preferred embodiment of the present invention, the optical-mechanical adjusting system further includes a screen, and the screen is provided with grid lines.

In a preferred embodiment of the present invention, the optical machine adjusting system further includes a screen, and the screen is provided with a positioning mark having the same shape as the light absorption region.

In a second aspect, an embodiment of the present invention provides a method for adjusting a light engine of the light engine adjusting system, where the method for adjusting a light engine includes: adjusting a first monochromatic light spot to enable the first monochromatic light spot to be missed on an effective display area; adjusting a second monochromatic spot to enable a second light-free area of the second monochromatic spot to coincide with a first light-free area of the first monochromatic spot, and forming a first mixed spot; adjusting a third monochromatic light spot to enable a third light-free area of the third monochromatic light spot and a mixed light-free area of the first mixed light spot to be symmetrical relative to the effective display area; adjusting the first mixed light spot and the third monochromatic light spot such that the mixed matte area and the third matte area coincide.

In a third aspect, an embodiment of the present invention provides an optical engine adjusting method of the optical engine adjusting system, where the optical engine adjusting method includes: adjusting a first monochromatic light spot to enable a first non-light area of the first monochromatic light spot to coincide with the center of an effective display area; adjusting a second monochromatic light spot to enable a second light-free area of the second monochromatic light spot to coincide with the first light-free area, and forming a first mixed light spot; and adjusting the third monochromatic light spot to enable a third light-free area of the third monochromatic light spot to be overlapped with the mixed light-free area of the first mixed light plate.

The optical-mechanical adjusting system provided by the invention comprises a bottom plate; a light source; the pretreatment assembly is arranged opposite to the light source at intervals and comprises a light absorption array, a light homogenizing unit, a polarization unit and a first condenser lens, wherein the light absorption array, the light homogenizing unit, the polarization unit and the first condenser lens are sequentially arranged from the object side to the image side; the light splitting assembly is arranged on the image side of the first condenser lens; and the projection assembly is arranged at the image side of the light splitting assembly and comprises a light combining unit and a lens. According to the embodiment of the invention, the center of each monochromatic spot is marked by the light absorption array arranged on the object side of the light homogenizing unit, so that each spot can be marked by a mark with a clear and sharp edge, the precision of the adjustment of the optical machine is effectively improved, the risk of edge leakage after the spot is arranged in the whole machine is reduced, the yield is improved, and the production cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts. The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic structural diagram illustrating an opto-mechanical adjusting system according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of an effective display area and an actual light spot provided by the first embodiment of the invention;

FIG. 3 is a schematic diagram of a leaky edge display provided by a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first fly-eye lens provided by a first embodiment of the invention at a first viewing angle;

FIG. 5 is a schematic diagram of a light absorbing array provided by a first embodiment of the present invention at a first viewing angle;

FIG. 6 is a schematic diagram illustrating a first fly-eye lens and a light absorption array provided in accordance with a first embodiment of the present invention;

FIG. 7 is a schematic diagram of a screen after placement of a light-absorbing array according to a first embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating the adjustment of the blue-green spot coincidence provided by the first embodiment of the present invention;

FIG. 9 is a schematic diagram illustrating the symmetry of the red spot and the blue-green spot provided by the first embodiment of the present invention;

fig. 10 is a schematic diagram illustrating an effective display area provided with a non-light area mark according to a third embodiment of the present invention;

fig. 11 is a block flow diagram illustrating a method for adjusting an optical engine according to a second embodiment of the present invention;

fig. 12 is a block diagram illustrating a flowchart of a light engine adjusting method according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "front", "back", "vertical", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, in a 3LCD light machine system, because illumination light spots projected onto RGB three paths of panels are larger than the panels, certain light power efficiency can be sacrificed, in order to take efficiency and edge leakage into consideration, the center of each RGB monochromatic light spot is adjusted to coincide with the center of an effective picture through a certain adjusting means on the basis of a certain overlay (the overlay is the ratio of the light spot power outside the panels to the total light spot power at the panels), so that even if deformation after the RGB monochromatic light spots are installed in the whole machine is difficult to predict, the adjustment allowance (the ratio of the area size of the actual light spot exceeding the effective picture to the effective picture size) of the whole machine can be reasonable and symmetrical, and the edge leakage of the whole machine and the light machine efficiency are controlled.

In the regulation of the 3LCD optical-mechanical system of current RGB three-colour, can change the position of blue facula through adjusting the blue reflector, can change the position of red facula through adjusting the red reflector, can change the position of the three facula of red green blue simultaneously through adjusting the condensing lens. Due to the characteristics of the light path, when the collecting lens is adjusted, the moving trend of the blue-green light spots is consistent and is opposite to that of the red light spots.

However, after examining some conventional 3LCD optical-mechanical systems and adjusting methods, the inventors found some problems in the conventional 3LCD optical-mechanical systems and adjusting methods thereof.

In the existing 3LCD light machine adjusting method, a condenser lens is firstly focused to one side to enable a green light spot to be missed, then a blue light reflector is adjusted to enable a blue light spot to be coincided with a green light spot, then a red light reflector is adjusted to enable a red light spot to be symmetrical with a blue-green light spot, and finally the condenser lens is adjusted to enable three light spots to be coincided. The blue-green light spots can be judged only by edge superposition when being superposed, but because the edge imaging and uniformity of each monochromatic light spot are not as good as the center of the light spot, the poor imaging (virtual edge) of the light spot edge can bring artificial judgment errors, and when the centers of the two light spots are not completely superposed, the adjustment allowance loss can be caused. Similarly, when the red light spot and the blue-green light spot are judged to be symmetrical, the judgment can be carried out only through the distance between the light spot edge and the effective picture edge, and the virtual edge can bring manual judgment errors.

In another 3LCD light machine adjusting method, the condenser is adjusted to make the center of the green light spot coincide with the center of the effective picture (the green light can only be adjusted by the condenser), and then the blue light reflector and the red light reflector are respectively adjusted to make the centers of the blue light spot and the red light spot coincide with the center of the effective picture. However, since the actual size of each RGB monochromatic spot is larger than the effective picture, an operator cannot accurately judge whether the centers of the three RGB spots coincide with the center of the effective picture during adjustment, and if the three RGB monochromatic spots do not coincide with the center of the effective picture, the adjustment margin is asymmetric, and the risk of edge leakage after the three RGB monochromatic spots are mounted in the complete machine is also high.

In the course of research, the inventor researches the structure of the optical system inside the existing 3LCD optical machine, and how to improve the existing structure and adjustment method to improve the problem of low accuracy of the light spot adjustment, and proposes the optical machine adjustment system and method in the embodiment of the invention. The opto-mechanical adjusting system and method provided by the embodiment of the invention will be described in detail through specific embodiments.

First embodiment

Referring to fig. 1, the present embodiment provides an optical machine adjusting system, which includes a light source 101, a preprocessing component, a light splitting component, and a projection component, where the preprocessing component and the light source 101 are disposed at an interval.

In this embodiment, the light source 101 may be a light source capable of generating RGB three-color light. In order to easily and clearly explain the principle of the present embodiment, the present embodiment takes a 3LCD light engine with three colors of RGB as an example for explanation. It is understood that in other embodiments, the light engine adjusting system provided by the present embodiment can also be used for adjusting the LCD light engine system of other colors than RGB.

The pretreatment assembly comprises a light absorption array 102X, a light homogenizing unit, a polarizing unit 104 and a first condenser lens 105 which are sequentially arranged from the object side to the image side. In this embodiment, the preprocessing module is used for performing optical processing, such as dodging, filtering, collimating, etc., on the signal light emitted from the light source 101.

In this embodiment, the light equalizing unit is provided with a microlens array composed of a plurality of microlens units, the light absorption array 102X includes a plurality of light absorption regions corresponding to the plurality of microlens units, and each light absorption region coincides with a center of one corresponding microlens unit on the microlens array.

It will be appreciated that the environment onto which the light is projected via the projection assembly includes a projection screen, a wall, or other object that may be used for projection display.

In this embodiment, the optical-mechanical adjusting system may further include a screen 127. The light emitted from the light source 101 sequentially passes through the preprocessing assembly and the light splitting assembly to form a plurality of monochromatic light spots with a non-light area at the center, and then is projected onto the screen 127 through the projection assembly. The screen 127 has an effective display area 128 thereon, and the effective display area 128 is an area on the screen 127 that can be used for normally displaying images. It should be noted that the screen 127 in this embodiment may be a professional projection screen, or may be a wall or other objects that can be used for projection display. .

As one mode, the polarizing unit 104 may be a PBS (Polarization Beam Splitter), which can convert incident light output through the light uniformizing unit into P light (Polarization vector in the incident plane) and output to the first condenser lens 105. The first condenser lens 105 is a lens capable of condensing a light beam, and is capable of increasing a spot power per unit area to improve a beam quality.

The light splitting assembly is arranged on the image side of the first collecting lens 105, and the projection assembly is arranged on the image side of the light splitting assembly. The converged light beam output by the first condenser lens 105 is incident on the light splitting assembly and is finally output to the projection assembly by the light splitting assembly.

In this embodiment, the projection assembly includes a light combining unit 125 and a lens 126. In one form, the light combining unit 125 can be an X-Cube (light combining prism), and the X-Cube is a light beam coupling element, which can effectively collect a plurality of monochromatic light beams output by the light splitting assembly, and then send the light beams into an imaging system, i.e. a lens 126, and finally project the light beams onto a screen 127 through the lens 126 for image display.

As one mode, as shown in fig. 1, the light uniformizing unit includes a first fly-eye lens 102 and a second fly-eye lens 103 which are disposed in order from the object side to the image side. The light absorption array 102X is disposed on the object side of the first fly-eye lens 102, and the first fly-eye lens 102 and the second fly-eye lens 103 are both provided with corresponding microlens arrays composed of a plurality of microlens units.

In this embodiment, the object side refers to a side of the optical path close to the light source 101; the image side refers to a side of the optical path close to the screen 127.

In this embodiment, as shown in fig. 1, the beam splitting component includes a first beam splitter 106, a second beam splitter 112, a first monochromatic light path, a second monochromatic light path, and a third monochromatic light path. The light that by first condensing lens 105 outgoing gets into first monochromatic light that first spectroscope 106 divides first monochromatic light gets into first monochromatic light, the warp another part mixed light that first spectroscope 106 divides is divided into second monochromatic light and third monochromatic light to second monochromatic light, second monochromatic light gets into second monochromatic light, third monochromatic light gets into third monochromatic light, by first monochromatic light the second monochromatic light the light that third monochromatic light output respectively the light that closes light unit 125 closes the light, the warp again lens 126 projects on the screen 127.

By one approach, the first beam splitter 106 and the second beam splitter 112 may each be dichroic mirrors. For example, when the first beam splitter 106 is blue-reflective and yellow-transmissive, the second beam splitter 112 may be green-reflective and red-transmissive, and at this time, the first monochromatic light is blue light, the second monochromatic light is green light, and the third monochromatic light is red light; when the second dichroic mirror 112 reflects red and transmits green, the second dichroic mirror 112 may reflect green and transmit blue, and at this time, the first monochromatic light is red, the second monochromatic light is green, and the third monochromatic light is blue.

For the sake of clarity of the principle and structure of the present embodiment, the following description will be made by taking the system of first dividing blue light as an example.

In this embodiment, as shown in fig. 1, the first monochromatic light path includes a first reflecting mirror 107, a second condensing mirror 108, a first polarizer 109, a first liquid crystal panel 110, and a first analyzer 111, which are sequentially disposed from the object side to the image side.

In this embodiment, as shown in fig. 1, the second monochromatic light path includes a third spectroscope 113, a second polarizer 114, a second liquid crystal panel 115, and a second analyzer 116, which are sequentially disposed from the object side to the image side.

In this embodiment, as shown in fig. 1, the third monochromatic optical path includes a first relay lens 117, a second reflecting mirror 118, a second relay lens 119, a third reflecting mirror 120, a fourth condensing mirror 121, a third polarizer 122, a third liquid crystal panel 123, and a third analyzer 124, which are arranged in order from the object side to the image side. Since the optical path length of the third monochromatic light path is long, the beam quality is trimmed by providing the first relay lens 117 and the second relay lens 119.

In this embodiment, taking a system of splitting blue light first as an example, the blue light reflected by the first beam splitter 106 is reflected by the first reflector 107 and is projected onto the light combining unit 125 through the second beam splitter 108, the first polarizer 109, the first liquid crystal panel 110 and the first analyzer 111 in sequence; the yellow light transmitted by the first beam splitter 106 is split into red light and green light by the second beam splitter 112, and the green light is projected onto the light combination unit 125 through the third condenser 113, the second polarizer 114, the second liquid crystal panel 115 and the second analyzer 116 in sequence; the red light transmitted by the second beam splitter 112 is projected onto the light combining unit 125 through the first relay lens 117, the second reflector 118, the second relay lens 119, the third reflector 120, the fourth condenser 121, the third polarizer 122, the third liquid crystal panel 123 and the third analyzer 124 in sequence; the three red, green and blue lights are combined by the light combination unit 125, enter the lens 126 and are projected onto the screen 127.

In this embodiment, it is preferable that the screen 127 has grid lines. The provision of grid lines on the screen 127 may facilitate the adjustment of the light spots on the screen 127.

In this embodiment, it is preferable that the screen 127 is provided with a positioning mark having the same shape as the light absorption region 102X. Positioning marks are provided on the screen 127 to facilitate alignment of the light-free area of the light spot with the center of the effective display area 128 on the screen 127.

It will be appreciated that in other embodiments, other types of alignment-facilitating graphics or scale markings may be provided on the screen 127 to increase the accuracy of spot adjustment.

In actual production, the components of the optical machine need to be adjusted after being assembled, so that the red, green and blue light spots are superposed. The position of the blue spot can be changed by adjusting the first mirror 107; the position of the red spot can be changed by adjusting the third mirror 120; the positions of the three red, green and blue light spots can be changed simultaneously by adjusting the first condenser lens 105. Due to the light path characteristics, when the first condenser lens 105 is adjusted, the moving trend of the blue-green light spot is consistent, and is opposite to the moving trend of the red light spot (central symmetry).

When the designer designs the light path, the light spot projected to the liquid crystal panel is larger than that of the liquid crystal panel for the convenience of adjustment and considering the deformation of the optical machine after being assembled into the whole machine.

As shown in fig. 2, taking the green spot as an example, the actual green spot 128G projected onto the screen is larger than the effective display area 128 (but only the portion within the effective display area 128 is actually displayed), and as long as the effective display area 128 is centered with respect to the actual green spot 128G, i.e., a₁＝a₂，b₁＝b₂Even if the optical machine is slightly deformed after being assembled into the whole machineWhen the light path is changed, the green light spot 128G is shifted, and the edge leakage condition shown in fig. 3 does not occur.

As shown in fig. 3, only the part of the actual green light spot 128G in the effective display area 128 can be seen during projection, and the complete light spot cannot be seen, but the image of the edge of each monochromatic light spot is not clear, and a determination error is caused when the overall position of the light spot is determined by using the edge of the light spot. Considering that in the 3LCD system, the image of the first fly-eye lens is imaged at the first liquid crystal panel 110, the second liquid crystal panel 115 and the third liquid crystal panel 123, and the lens 126 projects the images of the three liquid crystal panels on the screen 127, so that the first fly-eye lens 102 is marked by the light absorption array 102X, and then the actual monochromatic light spot can be marked, and the position of the whole light spot is marked by using a mark with a sharp edge and located at the center of the light spot.

As shown in fig. 4, fig. 4 is a schematic structural diagram of the first fly-eye lens 102 at the first viewing angle, which includes a glass substrate 1022 and a microlens array 1021, and an image of each microlens unit in the microlens array 1021 is superimposed to form an image at the liquid crystal panel.

As shown in fig. 5, fig. 5 is a schematic structural diagram of the light absorption array 102X at a first viewing angle, where the glass substrate 1024 and the glass substrate 1022 may be glass plates of the same specification, and the light absorption unit array 1023 is embedded in the glass substrate 1022, where the center of each rectangular light absorption unit coincides with the center of a corresponding microlens unit on the first fly-eye lens 102. It should be noted that the shape of the light absorbing unit is not limited in this embodiment, and may be a cross shape with a clear edge, a circular point, or the like.

Referring to fig. 6 and 7, when the light absorption array 102X and the first fly-eye lens 102 are overlapped as shown in fig. 6, a picture finally projected onto the screen 127 is shown in fig. 7 (taking a picture formed by the green light spots 128G as an example). The no light area 129G is not transparent, has sharp edges, and has a center coincident with the center of the green light spot 128G. When the first condenser lens 105 is adjusted to move the green spot, the no-light area 129G moves synchronously with the green spot 128G, so that the condition of the green spot 128G can be judged based on the no-light area 129G.

The ray apparatus governing system that this embodiment provided, the accessible sets up the extinction array 102X at first fly-eye lens 102 thing side, marks the center of each monochromatic facula for every facula can both mark with the clear sharp mark in an edge, and the effectual precision that has improved ray apparatus regulation has reduced the risk of putting into the complete machine back edge leakage, has improved the yields, has reduced manufacturing cost.

Second embodiment

Referring to fig. 11, the present embodiment provides an optical-mechanical adjusting method, which can be applied to the optical-mechanical adjusting system provided in the first embodiment, and the optical-mechanical adjusting method includes:

step S101: adjusting a first monochromatic light spot to enable the first monochromatic light spot to be missed on an effective display area;

step S102: adjusting a second monochromatic spot to enable a second light-free area of the second monochromatic spot to coincide with a first light-free area of the first monochromatic spot, and forming a first mixed spot;

step S103: adjusting a third monochromatic light spot to enable a third light-free area of the third monochromatic light spot and a mixed light-free area of the first mixed light spot to be symmetrical relative to the effective display area;

step S104: adjusting the first mixed light spot and the third monochromatic light spot such that the mixed matte area and the third matte area coincide.

Specifically, the first collecting mirror 105 may be first put on one side to make the green light spot 128G leak, then the first reflecting mirror 107 is adjusted to make the blue light spot 128B coincide with the green light spot 128G, then the third reflecting mirror 120 is adjusted to make the red light spot 128R symmetrical to the blue-green mixed light spot, and finally the first collecting mirror 105 is adjusted to make the three light spots coincide. Because the uniformity of each light spot edge is obviously inferior to that of the light spot center (not specifically shown in the embodiment), the centers of the two light spots can be ensured to coincide by overlapping the non-light areas of the two light spots, and the uniformity problem or the judgment error possibly caused by the coincidence of the two light spot edges is avoided.

Referring to fig. 8, fig. 8 shows a case when the first mirror 107 is adjusted to make the blue light spot 128B coincide with the green light spot 128G, wherein 128B is the actual blue light spot, and 130G and 130D constitute the light-free area of the green light spot, i.e. the two

areas

129G, 130B and 130D in fig. 7 constitute the light-free area (not shown) of the blue light spot. And the area of the no light area of the blue light and the no light area 129G of the green light are equal, and the edge is sharp. When the two light spots are not completely coincident, a portion of the non-light area of the blue light spot 128B will appear green and a portion of the non-light area of the green light spot 130G will appear blue, with only 130D still having no light, but the area of the light spot is reduced compared to 129G, 130D. The portion where the blue and green light coincide will appear cyan. Therefore, by eliminating the blue and green tones at the edge of 129G, the centers of blue spot 128B and green spot 128G can be made to coincide completely.

Referring to fig. 9, fig. 9 shows a process of adjusting the third reflector 120 to make the red light spot 128R symmetrical to the blue-green light spot after the blue-green light spots are completely overlapped. 128C indicates a cyan spot after overlapping cyan, 129C indicates a no light area of the cyan spot, and 129C and 129G have the same size as a no light area of a blue spot not shown in the figure. The red light passes through a longer optical path, and the imaging is worse than that of a blue-green light spot, so the edge uniformity is worse, and the superiority of the judgment of a no light area provided by the scheme is more obvious. Since the movement trend of the red spot 128R is opposite to that of the cyan spot 128C when the first condenser lens 105 is adjusted, the red spot 128R and the cyan spot 128C need to be adjusted to be symmetrical, so that x is a distance between x and y₁＝x₂，y₁＝y₂. Preferably, a grid can be arranged on the screen 127, so that adjustment and judgment are facilitated. When the red spot 128R and the cyan spot 128C are completely symmetrical, the first condenser lens 105 is adjusted to make their centers coincide, and the coincidence determination process is similar to that of fig. 8, and reference can be made to the above description about fig. 8.

Third embodiment

Referring to fig. 12, the present embodiment provides an optical-mechanical adjusting method, which can be applied to the optical-mechanical adjusting system provided in the first embodiment, and the optical-mechanical adjusting method includes:

step S201: adjusting a first monochromatic light spot to enable a first non-light area of the first monochromatic light spot to coincide with the center of an effective display area;

step S202: adjusting a second monochromatic light spot to enable a second light-free area of the second monochromatic light spot to coincide with the first light-free area, and forming a first mixed light spot;

step S203: and adjusting the third monochromatic light spot to enable a third light-free area of the third monochromatic light spot to be overlapped with the mixed light-free area of the first mixed light plate.

The most difference from the second embodiment is that in this embodiment, the first condenser lens 105 can be adjusted to make the center of the green light spot 128G coincide with the center of the effective display area 128 (the green light can be adjusted only by the first condenser lens 105), and then the first reflector 107 and the third reflector 120 can be adjusted to make the central non-light areas of the blue light spot 128B and the red light spot 128R coincide with the center of the effective display area 128. Preferably, when the size of the effective display area 128 is determined, the size of the non-light area of the RGB single-color light spot is also determined, so that by making a rectangular mark 129 on the screen 127, as shown in fig. 10, when the non-light area of each single color coincides with the rectangular mark 129, that is, the center of the representative light spot coincides with the center of the effective display area 128.

In summary, the system and the method for adjusting an optical machine provided in the embodiments of the present invention mark the center of each monochromatic spot by the light absorption array disposed on the object side of the light equalizing unit, so that each spot can be marked by a mark with a clear and sharp edge, thereby effectively improving the accuracy of adjusting the optical machine, reducing the risk of edge leakage after being loaded into the optical machine, improving the yield, and reducing the production cost. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical engine conditioning system, comprising:

a light source;

the pretreatment assembly is arranged opposite to the light source at intervals and comprises a light absorption array, a light homogenizing unit, a polarization unit and a first condenser lens, wherein the light absorption array, the light homogenizing unit, the polarization unit and the first condenser lens are sequentially arranged from the object side to the image side;

the light splitting assembly is arranged on the image side of the first condenser lens; and

a projection component arranged at the image side of the light splitting component, the projection component comprises a light combination unit and a lens,

the light emitted by the light source sequentially passes through the preprocessing assembly and the light splitting assembly to form a plurality of monochromatic light spots with a light-free area at the center, and then sequentially passes through the light combining unit and the lens to be projected to the outside.

2. The optical machine adjusting system according to claim 1, wherein the light splitting assembly includes a first beam splitter, a second beam splitter, a first monochromatic light path, a second monochromatic light path, and a third monochromatic light path, light emitted from the first beam splitter enters the first monochromatic light path through the first monochromatic light split by the first beam splitter, another mixed light split by the first beam splitter is split into the second monochromatic light and the third monochromatic light through the second beam splitter, the second monochromatic light enters the second monochromatic light path, the third monochromatic light enters the third monochromatic light path, and light respectively output by the first monochromatic light path, the second monochromatic light path, and the third monochromatic light path is combined by the light combining unit and then projected to the outside through the lens.

3. The optical-mechanical adjustment system of claim 2, wherein the first monochromatic light path comprises a first reflector, a second condenser, a first polarizer, a first liquid crystal panel and a first analyzer, which are sequentially arranged from an object side to an image side.

4. The optical mechanical adjustment system of claim 2, wherein the second monochromatic light path comprises a third spectroscope, a second polarizer, a second liquid crystal panel and a second analyzer arranged in sequence from an object side to an image side.

5. The optical-mechanical adjustment system of claim 2, wherein the third monochromatic light path comprises a first relay lens, a second reflecting mirror, a second relay lens, a third reflecting mirror, a fourth collecting mirror, a third polarizer, a third liquid crystal panel and a third analyzer, which are sequentially arranged from the object side to the image side.

6. The optical mechanical adjustment system of claim 1, wherein the light uniformizing unit includes a first fly-eye lens and a second fly-eye lens arranged in sequence from an object side to an image side, the light absorbing array is arranged on the object side of the first fly-eye lens, and each of the first fly-eye lens and the second fly-eye lens is provided with a corresponding microlens array composed of a plurality of microlens units.

7. The opto-mechanical adjustment system of claim 1, further comprising a screen having gridlines disposed thereon.

8. The optical-mechanical adjustment system of claim 1, further comprising a screen on which positioning marks having the same shape as the light-absorbing region are disposed.

9. An opto-mechanical adjustment method applied to the opto-mechanical adjustment system according to any one of claims 1 to 8, wherein the opto-mechanical adjustment method comprises:

adjusting a first monochromatic light spot to enable the first monochromatic light spot to be missed on an effective display area;

adjusting a second monochromatic spot to enable a second light-free area of the second monochromatic spot to coincide with a first light-free area of the first monochromatic spot, and forming a first mixed spot;

adjusting a third monochromatic light spot to enable a third light-free area of the third monochromatic light spot and a mixed light-free area of the first mixed light spot to be symmetrical relative to the effective display area;

adjusting the first mixed light spot and the third monochromatic light spot such that the mixed matte area and the third matte area coincide.

10. An opto-mechanical adjustment method applied to the opto-mechanical adjustment system according to any one of claims 1 to 8, wherein the opto-mechanical adjustment method comprises:

adjusting a first monochromatic light spot to enable a first non-light area of the first monochromatic light spot to coincide with the center of an effective display area;

adjusting a second monochromatic light spot to enable a second light-free area of the second monochromatic light spot to coincide with the first light-free area, and forming a first mixed light spot;

and adjusting a third monochromatic spot to enable a third light-free area of the third monochromatic spot to coincide with the mixed light-free area of the first mixed spot.