CN107065420A - Projection system - Google Patents

Projection system Download PDF

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Publication number
CN107065420A
CN107065420A CN 201710369268 CN201710369268A CN107065420A CN 107065420 A CN107065420 A CN 107065420A CN 201710369268 CN201710369268 CN 201710369268 CN 201710369268 A CN201710369268 A CN 201710369268A CN 107065420 A CN107065420 A CN 107065420A
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CN
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projection
stimulated emission
light
projection screen
projection system
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CN 201710369268
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Chinese (zh)
Inventor
李巍
刘显荣
郭汝海
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海信集团有限公司
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • G03B21/60Projection screens characterised by the nature of the surface

Abstract

The invention discloses a projection system. The projection system comprises a monochromatic source, a display chip, a galvanometer, a projection lens and a projection screen, wherein the display chip is used for receiving an emergent light beam of the monochromatic source and making the received light beam incident to the galvanometer after modulation, the galvanometer is used for changing a position of the light beam incident to the projection lens so as to change the position of the light beam incident to the projection screen through the projection lens, the projection screen is formed by arranging at least three simulated emission units according to a set rule, and each simulated emission unit is simulated to emit light with special color after illumination of the monochromatic source. The simulated emission unit contained in the projection screen can emit the light with special color after illumination, thus, a clear image can be displayed only by emitting the light ray with special color and special intensity at each pixel position of the projection screen provided by the embodiment of the invention, a curvature field does not exist under a large visual field, the projection lens is only needed to be used for imaging of monochromatic light, and the setting difficulty of the lens is greatly reduced.

Description

一种投影系统 A projection system

技术领域 FIELD

[0001] 本发明涉及投影技术领域,尤指一种投影系统。 [0001] Technical Field The present invention relates to a projector, more particularly to a projection system.

背景技术 Background technique

[0002] 投影系统在进行图像显示时,仅需要通过视频电缆将生成模拟信号输入投影系统,即可以将图像投影在屏幕上进行显示。 [0002] a projection system when performing an image display is only necessary to generate an analog signal input through the video cable the projection system, i.e. the projected image can be displayed on the screen. 由于其便利性在显示领域应用十分广泛。 Because of its convenience in a wide range of display applications. 激光是一种高亮度,方向性强,具有偏振性质的光源,由于激光的诸多优点,近年来被逐渐作为光源应用于投影显示领域。 Laser is a high-brightness, highly directional, having polarization properties of the light source, due to the many advantages of the laser, as a light source in recent years, is progressively applied to the field of projection display.

[0003] 目前较为常用的一种激光投影系统包括投影光源、光机照明系统、光阀部件、投影镜头和投影屏幕这几个部分。 [0003] It is more commonly used as a projection light source comprises a laser projection system, the illumination optical system of the machine, a light valve member, a projection lens and a projection screen these parts. 其中,投影光源中通常可包含激光器,在非纯色三色光源中, 还设置有荧光粉轮,用于受激发生荧光,使得激光和荧光组成三基色光,再通过滤色轮滤色输出后进行光机照明系统。 Wherein the projection may comprise a laser light source is generally in a non-solid three-color light source, is also provided with a phosphor wheel for fluorogenic excited, so that the laser and the fluorescent composition of the three primary colors, then the color output by the color wheel machine light illumination system. 光机照明系统将光束输出给光阀部件,例如在数字光处理(Digital Light Procession,简称DLP)构架中,光阀部件可为数字微镜芯片(Digital Micromirror Device,简称DMD),DMD芯片接收图像信号的驱动,将三基色光光束进行调制后输出给投影镜头,由投影镜头将光束投射到投影屏幕上提供给观看者观看。 Ray illumination system the beam is output to the light valve element, for example, a digital light processing (Digital Light Procession, abbreviated DLP) framework, shutter member may be a digital micro-mirror chip (Digital Micromirror Device, referred to as DMD), DMD chip receives image drive signal, and outputs the three primary colors modulated beam to the projection lens, the projection lens projects a light beam onto a projection screen provided to the viewer to watch.

[0004]由于在实际应用上,轴外点发出的光在通过光学系统之后的像面为曲面,即存在场曲,场曲是球面光学系统的固有性质。 [0004] Since in practice, the off-axis light emitted by the point after the image plane by an optical system is a curved surface, i.e. the presence of curvature of field, the field curvature is inherent spherical optical system. 而应用于激光投影系统中的激光扫描系统在大视场情况下场曲会变大,随着视角的增加,镜头的所成像点距离投影屏幕的距离越远,从而无法使像面与投影屏幕重合,那么在投影屏幕观看到的成像是不清晰的。 Be applied to a laser projection system in a laser scanning system where a large field curvature becomes large end, with the increase in the viewing angle, the imaging point farther distance from the lens of the projection screen so that the image plane can not coincide with the projection screen , then the projection screen to watch the image is not clear. 为了解决这一问题, 就需要扫描系统中的扫描镜头的具有较大的工作距离或者具有较小的投影屏幕,以减少大视角所产生的像面场曲。 To solve this problem, it is necessary to scan the scanning lens system having a large working distance or a smaller projection screen, in order to reduce the image plane curvature of field generated by a large viewing angle. 然而在镜头的工作距离较大的情况下,会使投影系统的体积变大, 且在工作过程中如果扫描旋转器件等工作元件损坏时,会使得激光光点直接打到投影屏幕上,对用户的安全以及投影屏幕等设备的正常使用都存在着极在的隐患。 However, in large working distance of the lens, the volume of the projection system will become larger, and if during operation a scanning device rotating element is damaged, etc., such that the laser spot will directly hit the projection screen, the user normal use of the safety and projection screen and other equipment are present in the very risks.

发明内容 SUMMARY

[0005] 本发明实施例提供一种投影系统,用以消除投影镜头造成的场曲像差。 Embodiment [0005] The present invention provides a projection system, to eliminate the field curvature caused by the projection lens aberration.

[0006] 本发明实施例提供一种投影系统,包括:单色光源、显示芯片、振镜、投影镜头以及投影屏幕;其中, Example [0006] The present invention provides a projection system comprising: a monochromatic light source, a display chip, a vibration mirror, a projection lens and a projection screen; wherein,

[0007] 所述显示芯片,用于接收所述单色光源的出射光束,并对接收到的光束进行调制后入射到所述振镜; [0007] The display chip, for receiving the outgoing light beam is a monochromatic light source, and processes the received modulated light beams incident on the galvanometer;

[0008] 所述振镜,用于改变光束入射到所述投影镜头的位置,以改变光束经过所述投影镜头入射到所述投影屏幕上的位置; [0008] The galvanometer for changing the position of the light beam is incident to the projection lens to vary the beam incident through the projection lens onto the projection screen location;

[0009] 所述投影屏幕由至少三种受激发射单元按照设定规则排列而成,每种所述受激发射单元在经过所述单色光源的光照后受激发射特定颜色的光。 [0009] The projection screen by the stimulated emission of at least three units arrayed in accordance with a set rule, each of said stimulated light emission unit after the monochromatic light of a specific color light by stimulated emission.

[0010] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述投影镜头为超短焦投影镜头。 [0010] In one possible implementation, in the projection system according to an embodiment of the present invention, the projection lens is a short throw projection lens.

[0011] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述投影屏幕包括:红色受激发射单元、绿色受激发射单元以及蓝色受激发射单兀。 [0011] In one possible implementation, in the embodiment of the present invention is provided by the projection system, the projection screen comprising: a red cell stimulated emission, stimulated emission unit green and blue single Wu stimulated emission. h咖和私 h coffee and private

[0012] 在一种可能的实现方式中,在本发明实施例提供的上述投^系统中,名^所t 土激发射单元为尺寸形状均相同的条形;所述红色受激发射单元、绿色受激发射单元以及蓝色受激发射单元平行并排排列,并以固定的颜色顺序反复排列。 [0012] In one possible implementation, the above-described embodiment of the present invention is provided by the cast system ^, ^ soil were stimulated emission units are the same size and shape as the strip T; stimulated emission of the red cells, green and blue cells stimulated emission stimulated emission units arranged side by side in parallel, and in a fixed sequence of colors are repeatedly arranged. 4 一# A # 4

[0013] 在一种可能的实现方式中,在本发明实施例提供的上述投景〉系统中,各^述又激发射单元为尺寸形状均相同的方形;一个所述红色受激发射单元、一个巧述监色受?发射单元以及两个所述绿色受激发射单元组成一个方形颜色组,且f颜色的受^发射单巧在所述颜色组中的位置固定;所述红色受激发射单元以及所述蓝色受激发射单元位于所述颜色组的一条对角线上,两个所述绿色受激发光单元位于所述颜色组的另一条对角线上; [0013] In one possible implementation, in the embodiment of the present invention, the above-described embodiments provide a view administered> system, each ^ said unit and stimulated emission are the same size and shape of a square; a stimulated emission of the red cells, a clever monitoring said transmission unit by the color green and the stimulated emission of two units set a color square, and f ^ emission color is fixed by the clever single color group in position;? stimulated emission of the red on a diagonal line of the blue cell and the stimulated emission unit is in the color set, the two green excitation light receiving unit is located on the other diagonal of the color group;

[0014] 多个所述颜色组按矩阵排布构成所述投影屏幕。 [0014] The plurality of color groups arranged in a matrix constituting the projection screen. …, ...,

[0015] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述投影^ 幕为前投屏幕,包括沿所述投影镜头背离所述振镜方向上依次设置的保护层、由各所述又激发射单元组成的受激发射层以及反射层。 [0015] In one possible implementation, in the projection system according to an embodiment of the present invention, the projection screen is a front projection screen ^, along the projection lens comprising sequentially disposed away from the direction of the galvanometer the protective layer, said further stimulated by the stimulated emission layer and a reflective layer transmission units. .

[0016] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述投影屏幕为背投屏幕,包括沿所述投影镜头背离所述振镜方向止依次设置的二向色层、由各所述受激发射单元组成的受激发射层以及保护层。 [0016] In one possible implementation, in the embodiment of the present invention, the above-described embodiment provides a projection system, the projection screen is a rear projection screen, including along the projection lens are sequentially disposed away from the direction of the galvanometer ending two the colored layer, each said stimulated emission layer and a protective layer composed by stimulated emission units. 、、 ,,

[0017] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述受激发射单元为量子点单元或荧光单元。 [0017] In one possible implementation, in the projection system according to an embodiment of the present invention, the stimulated emission unit or fluorescent quantum dot unit cells.

[0018] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述量子点单元的材料为锌、镉、硒、硫元素的化合物。 [0018] In one possible implementation, in the projection system according to an embodiment of the present invention, the material for the quantum dot cell a compound of zinc, cadmium, selenium, sulfur element.

[0019] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,所述单色光源为蓝光光源、紫光光源或紫外光源。 [0019] In one possible implementation, in the projection system according to an embodiment of the present invention, the monochromatic light source is a blue light, violet light, or ultraviolet light source.

[0020] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,还包括:位于所述单色光源出光一侧的整形透镜。 [0020] In one possible implementation, in the projection system according to an embodiment of the present invention, further comprising: a monochromatic light source located at the side of the light shaping lens.

[0021] 在一种可能的实现方式中,在本发明实施例提供的上述投影系统中,还包括:设置在所述单色光源与所述显示芯片之间的集光器。 [0021] In one possible implementation, in the projection system according to an embodiment of the present invention, further comprising: a monochromatic light source disposed in the display and the chip between the collector.

[0022] 本发明有益效果如下: [0022] Advantageous effects of the present invention are as follows:

[0023]本发明实施例提供的投影系统,包括:单色光源、显示芯片、振镜、投影镜头以及投影屏幕;显示芯片,用于接收单色光源的出射光束,并对接收到的光束进行调制后入射到振镜;振镜,用于改变光束入射到投影镜头的位置,以改变光束经过投影镜头入射到投影屏幕上的位置;投影屏幕由至少三种受激发射单元按照设定规则排列而成,每种受激发射单元在经过单色光源的光照后受激发射特定颜色的光。 [0023] The embodiment of the present invention is provided in a projection system, comprising: a monochromatic light source, a display chip, a vibration mirror, a projection lens and a projection screen; display chip, for receiving the outgoing light beam of a monochromatic light source, and the received light beams modulated incident galvanometer; galvanometer for changing the light beam incident on the projection lens position to change the incident beam passes through the projection lens onto the projection screen position; projection screen by the stimulated emission of at least three units are arranged according to a set rule from each stimulated emission unit after the light source of monochromatic light of a certain color stimulated emission. 由于投影屏幕中包括的受激发射单元可在受到光照后发出特定颜色的光,因此本发明实施例提供的上述投影屏幕只需要在各像素位置发出特定颜色的特定强度的光线即可显示清晰画面,而不再将投影屏幕作为接收屏接收投影镜头的成像显示图像,从而不存在由投影镜头造成的场曲问题,投影镜头只需要针对单色光成像,大大降低了镜头的设置难度。 Since stimulated emission projection screen unit may be included in a specific color of light emitted by the light in the post, thus the above-described embodiment of the present invention to provide a projection screen embodiment need only emit light of a specific intensity of a particular color to each pixel position in the display screen clear , and no longer as a projection screen forming a display image receiving screen receiving the projection lens, so that there is curvature of field problems caused by the projection lens, the projection lens only for monochromatic image, greatly reduces the difficulty of setting the lens.

附图说明L0024J图1为本发明实施例提供的投影系统的结构示意图之一; BRIEF DESCRIPTION OF L0024J FIG. 1 configuration of the projection system according to one embodiment of the present invention, a schematic diagram;

[0025]图2为本发明实施例提供的上投影屏幕的结构示意图; [0025] FIG. 2 is a schematic structural diagram of a projection screen embodiment of the invention;

[0026] 图如为本发明一实施例提供的受激发射单元的排列结构示意图; [0026] The schematic diagram of FIG stimulated emission unit arrangement structure according to an embodiment of the invention;

[0027] 图%为本发明一实施例提供的振镜的振动位置示意图; [0027] FIG schematic% vibration position galvanometer according to an embodiment of the present invention;

[0028] 图3c为本发明一实施例提供的红色发光点的排列结构示意图; [0028] FIG. 3c schematic arrangement structure of the red light-emitting points according to an embodiment of the present invention;

[0029] 图3d为本发明一实施例提供的绿色发光点的排列结构示意图; [0029] FIG. 3d schematic arrangement structure of the green light emitting points according to an embodiment of the present invention;

[0030]图本发明一实施例提供的蓝色发光点的排列结构示意图; [0030] FIG schematic arrangement structure of the present invention is a blue light-emitting points according to an embodiment;

[0031] 图3f为本发明一实施例提供的各颜色发光点的排列结构示意图; [0031] FIG. 3f schematic arrangement structure of light emitting points of the respective colors according to an embodiment of the present invention;

[0032] 图4a为本发明另一实施例提供的受激发射单元的排列结构示意图; [0032] FIG. 4a schematic arrangement structure of the stimulated emission unit according to another embodiment of the present invention;

[0033]图4b为本发明另一实施例提供的振镜的振动位置示意图; [0033] FIG. 4b is a schematic diagram of the vibration position of the galvanometer according to another embodiment of the invention;

[0034]图4c为本发明另一实施例提供的红色发光点的排列结构示意图; [0034] FIG. 4c a schematic arrangement structure of the red light-emitting points according to another embodiment of the present invention;

[0035]图4d为本发明另一实施例提供的蓝色发光点的排列结构示意图; [0035] FIG. 4d a schematic view of the arrangement structure of the blue light emitting points according to another embodiment of the present invention;

[0036]图4e为本发明另一实施例提供的绿色发光点的排列结构示意图之一; Green light emitting point arrangement structure according to an [0036] FIG 4e one embodiment of the present invention, a schematic view of another;

[0037]图4f为本发明另一实施例提供的绿色发光点的排列结构示意图之二; Green light emitting point arrangement structure according to an [0037] FIG. 4f a further embodiment of the present invention, a schematic diagram of the two;

[0038]图4g为本发明另一实施例提供的各颜色发光点的排列结构示意图; Schematic arrangement structure of light emitting points of the respective colors provided in [0038] FIG. 4g another embodiment of the present invention;

[0039]图5a为本发明实施例提供的投影屏幕的结构示意图之一; [0039] FIG. 5a structural diagram of a schematic diagram of one embodiment of a projection screen of the present invention;

[0040]图5b为本发明实施例提供的投影屏幕的结构示意图之二; Structural diagram of a projection screen [0040] embodiment of the present invention. FIG. 5b a schematic view of the two;

[0041]图6为本发明实施例提供的投影系统的结构示意图之二。 [0041] FIG. 6 embodiment according to the structure of the projection system provides a schematic bis present invention.

具体实施方式 detailed description

[0042]本发明实施例提供一种投影系统,用以消除投影镜头造成的场曲像差。 Embodiment [0042] The present invention provides a projection system, to eliminate the field curvature caused by the projection lens aberration.

[0043]为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0043] To make the objectives, technical solutions, and advantages of the present invention will become more apparent below in conjunction with the accompanying drawings of the present invention will be further described in detail, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without any creative effort shall fall within the scope of the present invention.

[0044]下面结合附图详细介绍本发明具体实施例提供的投影系统。 [0044] The following detailed description provided in the projection system of the present invention in conjunction with the accompanying drawings specific embodiments.

[0045] 如图1所示,本发明实施例提供的投影系统,包括:单色光源11、显示芯片12、振镜13、投影镜头14以及投影屏幕15。 [0045] As shown in FIG. 1, the projection system according to an embodiment of the present invention, comprising: a monochromatic light source 11, a display chip 12, the vibration mirror 13, projection lens 14 and the projection screen 15.

[0046]其中,显示芯片12,用于接收单色光源11的出射光束,并对接收到的光束进行调制后入射到振镜13; [0046] wherein the display chip 12, for receiving the monochromatic light source 11 is emitted beam and the received light beams incident to modulated galvanometer 13;

[0047]振镜13,用于改变光束入射到投影镜头14的位置,以改变光束经过投影镜头14入射到投影屏幕15上的位置。 [0047] The galvano mirror 13, for changing the position of the beam incident on the projection lens 14 to change the light beam is incident on the projection lens 14 to the position 15 on the projection screen.

[0048]进一步地,如图2所示,本发明实施例提供的上述投影屏幕15由至少三种受激发射单元151按照设定规则排列而成,每种受激发射单元151在经过单色光源的光照后受激发射特定颜色的光。 [0048] Further, as shown in FIG. 2, the above-described embodiment of the present invention is provided in the projection screen 15 by the laser emission unit 151 through at least three monochromatic stimulated emission units 151 arrayed in accordance with a set rule, for each subject after the illumination light by stimulated emission of light of a certain color.

[0049]如图2所示,在本发明实施例提供的上述投影系统中,投影屏幕是由多种受激发射单元151组成的,这些受激发射单元151会按照一定的规则进行排列,其排列规则区分振镜的旋转特性会有一定的差异性。 [0049] As illustrated, the projection system according to an embodiment of the present invention, the projection screen 2 is a more stimulated emission unit 151 is composed of the stimulated emission unit 151 may be arranged according to certain rules, which arrangement rule distinguishing characteristics of the galvanometer rotation there will be some differences. 但无论采用哪种排列规则,都要使受激发射单元151在受到单色光源的光照之后发射的各颜色的光具有像素单元发光的特性,从而使得在像素单元中的各色块以与信号匹配的亮度点亮时可呈现完整的显示画面。 But either arrangement rule adopted, the pixel cells have the characteristics of light emission by the light having the respective colors emitted by stimulated emission unit 151 after being subjected to the illumination monochromatic light source such that the color of each pixel unit to correspond to the signal It may exhibit full display screen when the lighting brightness. 正是因为本发明实施例提供的上述投影系统采用这种画面显示方法,投影镜头14将经过调制后的光源光束分别偏折既定的角度从而入射到投影屏幕15的指定位置,那么只要在上述的指定位置处设置与调制光信号相匹配的受激发射单元即可在该位置处发射出特定亮度的特定颜色的光。 It is because the above-described embodiment of the present invention is provided in a projection system using this screen display method, the projection lens 14 through a predetermined angle of deflection of light beams are modulated to be incident to a designated position of the projection screen 15, as long as the above-described disposed at a prescribed position and matches the modulated optical signal by stimulated emission unit to emit light of a specific color brightness at that particular location. 在投影屏幕上的每个像素单元的位置都经过上述的处理之后即可显示出整幅显示画面,并且使用本发明实施例提供的上述投影屏幕进行显示时,是点亮受激发射单元发光进行显示,而不是以投影屏幕作为一个接收屏来显示投影镜头的成像,因此不会再受到投影镜头所带来的场曲像差的影响,从而投影镜头可根据实际要求选用长焦、短焦或超短焦等不同类型的镜头。 The position of each pixel unit on a projection screen after all the above processing to display the entire display screen, and when using the embodiment of the projection screen provided by the display, the lighting is carried out by stimulated emission light emitting unit of the present invention display, rather than receiving a projection screen as the projection screen to display the imaging lens, and therefore will not be affected by the projection lens field curvature aberration brought to project a telephoto lens can be selected according to actual requirements, or the short focal different types of ultra-short focus lens and the like. 在选用短焦镜头时可以缩小投影系统的体积,避免使用时的安全问题。 In the selection of the short-focus lens can reduce the volume of the projection system, to avoid safety problems when used.

[0050] 进一步地,由于本发明实施例提供的上述投影屏幕采用受激发射单元组合的形式,因此投影系统的光源仅采用单色光源即可,且投影系统中不再需要设置滤色轮部件,直接对单色光源的光束进行亮度调制即可,由此,可以进一步减小投影系统的体积,亦可在一定程度上简化信号调制的复杂程度。 [0050] Further, since the above-described embodiment of the present invention is provided by the projection screen in the form of stimulated emission unit in combination, and therefore a light source of the projection system can only employ a monochromatic light source, and a projection system is no longer necessary to provide a color wheel member , monochromatic light sources direct the light beam intensity modulation can be performed, thus, can further reduce the volume of the projection system, can reduce the complexity of signal modulation to a certain extent. 此外,由受激发射的能级原理可知,受激发射单元151 吸收高能量的光受激发射出长低能量的光,因此单色光源发射光的波段应小于受激发射单元151发射光的波段。 In addition, the energy level emitted by stimulated principle known, stimulated emission unit 151 to absorb high energy excitation light emitted by the low-energy wavelength light, and therefore the band monochromatic light source emitting light by stimulated emission band should be less than 151 units of the light emitted .

[0051] 在具体应用中,为了减小投影系统的体积,缩短投影设备与投影屏幕之间的距离, 可以采用超短焦投影镜头作为上述投影镜头14。 [0051] In a particular application, in order to reduce the volume of the projection system, to shorten the distance between the projection device and the projection screen, the projection lens may be employed as the ultra-short focus projection lens 14.

[0052] 进一步地,受激发射单元151通常至少应包括受激发射出显示所用的三基色光的种类。 [0052] Further, the stimulated emission unit 151 is typically excited species including at least three primary colors emitted by the display. 例如,如图2所示,本发明实施例提供的上述投影屏幕可包括:红色受激发射单元R、绿色受激发射单元G以及蓝色受激发射单元B。 For example, FIG. 2, the above-described embodiment of the present invention may provide a projection screen comprising: a red stimulated emission unit R, green G, and stimulated emission of blue cells stimulated emission unit B. 其中,红色受激发射单元R在吸收光源的能量后可发射出红色光,绿色受激发射单元G在吸收光源的能量后可发射出绿色光,蓝色受激发射单元B在吸收光源的能量后可发射出蓝色光。 Wherein the red cells R in the stimulated emission after absorbing the energy of the light source may emit a red light, a green G cells stimulated emission after absorbing the energy of the light source may emit a green light, and blue B cells stimulated emission of energy absorbing light after emitting a blue light. 在受激发射单元151按照如图2所示的方式进行排列时,红色受激发射单元R、绿色受激发射单元G以及蓝色受激发射单元B的数量相等, 且同一行中的一个红色受激发射单元R、一个绿色受激发射单元G和一个蓝色受激发射单元B可以构成一个像素单元。 When stimulated emission unit 151 are arranged in the manner illustrated by FIG. 2, stimulated emission unit red R, green G, and stimulated emission of blue cells stimulated emission by an equal number of B cells, and a red line in the same stimulated emission unit R, a green G stimulated emission unit and a blue emission stimulated B cells may constitute a pixel unit. 这时投影系统的扫描方式可为场扫描的方式,即可以使单色光源的光束每次都能入射到各像素单元中相同颜色的受激发射单元1S1上,从而每次可激发各像素单元中同一种颜色的光,再通过改变振镜13的旋转角度就可以改变光束的入射位置, 从而使得以极快的速度分别激发各像素单元中的红色光、绿色光和蓝色光。 Scanning time may be a field of the projection system in a scanning manner, i.e., the light beam can be monochromatic light source can be incident on each unit 1S1 by stimulated emission of the same color in each pixel unit, so that each respective pixel units excitable light of the same color, then by changing the rotation angle of the vibrating mirror 13 can change the position of the incident beam, so that a very high speed and red light, respectively, the excitation of each pixel unit, a green light and blue light. 由于人眼并不能识别上述速度的颜色切换,在人眼中各颜色的滞留可以形成完整的显示画面。 Since the human eye can not identify the color of the switching speed, the retention of each color can be the human eye to form a complete display screen. _ _

[0053] 在另一种可实施的方案中,如图3a所示,在本发明实施例提供的上述投影屏幕中, 各受激发射单元151为尺寸形状均相同的条形。 [0053] In another embodiment of an embodiment, shown in Figure 3a, in the projection screen according to an embodiment of the present invention, each of the stimulated emission unit 151 are the same size and shape as the strip. _ _

[0054] 其中,红色受激发射单元R、绿色受激发射单元G以及蓝色受激发射单元B平行并排排列,并以固定的颜色顺序反复排列。 [0054] wherein the red stimulated emission unit R, green G, and stimulated emission unit parallel blue by stimulated emission unit B are arranged side by side, and in a fixed sequence of colors are repeatedly arranged. _ _

[0055] 以图3a所示的排列规则为例,红色受激发射单元R、绿色受激发射单元G以及蓝色受激发射单元B为尺寸相同的条形结构,各受激发射单元均按照RGB的颜色顺序沿着第一方向并排排列。 [0055] The arrangement rule shown in FIG. 3a as an example, red stimulated emission unit R, green G, and stimulated emission unit of blue B cells stimulated emission stripe structures of the same size, each of the stimulated emission unit are in accordance RGB colors sequentially arranged side by side in the first direction. 在实际应用中,投影系统的扫描方式可为场扫描方式,单色光源11的出射光束在经过显示芯片12后可形成与像素单元个数相同的光束,再经过振镜13的反射后可以入射到投影镜头14的不同位置,从而入射到投影屏幕15的不同位置处。 In practice, scanning of the projection system may be a scanning field, the monochromatic light beam 11 emitted may be formed with the same number of pixel units after the beam display chip 12, and then after reflection mirror 13 may be incident transducer to different positions of the projection lens 14, to be incident at different positions of the projection screen 15.

[0056] 具体来说,在本发明实施例中,如图3b所示,振镜13可沿着轴PP'旋转,以极快的速度分别在A、B、C三个位置振动。 [0056] Specifically, in the embodiment of the present invention, shown in Figure 3b, the galvanometer 13 is' rotated along the axis PP, each vibrating at great speed in A, B, C three positions. 显示芯片12可为DMD芯片,单色光源11的出射光在经过DMD芯片后出射多束经过调制的光束入射到振镜13上,由于振镜13在A、B、C三个位置持续振动,因此带有不同亮度信号的光束在经过三种不同状态下的振镜之后,会以不同的强度入射到投影屏幕15的不同位置上。 Display chip 12 may be a DMD chip, a monochromatic light source emitted light after the DMD chip exit 11 of the multi-beam through modulated beam incident on the galvanometer 13, since the galvanometer 13 continuously vibrates A, B, C three positions, the light beam with different luminance signals after passing through the galvanometer in three different states, is incident to a different position on the projection screen 15 at different strengths. 例如,如图3c的上图所示,当振镜13的状态处于A位置时,多光束刚好入射到投影屏幕15中红色受激发射单元R所在的位置,因此红色受激发射单元R在受到光照之后受激发射红色光,投影屏幕显示红色亮点如图3c的下图所示,在本实施例中当振镜13处于A位置时,投影屏幕可显示阵列排布的红色发光点r。 For example, the figure shown in Figure 3c, when the state of the vibrating mirror 13 in the A position, the multi-beam 15 to a position just enters the red cells R stimulated emission projection screen is located, so the red cells R in the stimulated emission by after the stimulated emission of light red light, the projection display screen of FIG. 3c bright red spot as shown, when the oscillating mirror embodiment 13 in position a, the projection screen to display the red light emitting points arranged in an array r in the present embodiment. 同样地,如图3d所示,当振镜13 的状态处于B位置时,光束入射到投影屏幕15中绿色受激发射单元G所在的位置,投影屏幕可显示阵列排布的绿色发光点g;如图3e所示,当振镜13的状态处于C位置时,光束入射到投影屏幕15中蓝色受激发射单元B所在的位置,投影屏幕可显示阵列排布的蓝色发光点b。 Similarly, shown in Figure 3d, when a state of vibration mirror 13 in position B, the position of the light beam incident on the projection screen 15 in the stimulated emission of green G unit is located, the projection screen can be displayed arranged in an array of green light emitting point G; as shown in FIG. 3e, when the state of the vibrating mirror 13 in the position C, the light beam 15 incident on the projection screen by the blue emission position of the laser unit B is located, the projection screen may be displayed arrayed blue light emitting point b. 当振镜13以人眼无法识别的速度在A、B、C三个位置持续振动时,由于人眼对图像的滞留作用, 人眼所观看到图形如图3f所示,以每行的一个红色发光点r、一个绿色发光点g和一个蓝色发光点b作为一个像素单元(Pixel)时,当每个像素单元中的不同颜色的发光点都具有其对应的亮度时,即可观看到显示面画。 When the galvanometer speed of the human eye does not recognize continuous vibration at A, B, C three positions 13, because the human eye image retention effect on the human eye pattern as viewed in FIG. 3f, a per row when the red light emitting point r, a green light emitting point g and point b a blue light emitting element as a pixel (pixel), when the light emitting points of different colors in each pixel unit has a corresponding luminance to be viewed displayed in the picture.

[0057]在另一种可实施的方案中,如图4a所示,在本发明实施例提供的上述投影屏幕中, 各受激发射单元151为尺寸形状均相同的方形;一个红色受激发射单元R、一个蓝色受激发射单元B以及两个绿色受激发射单元G组成一个方形颜色组P,且各颜色的受激发射单元在颜色组P中的位置固定;红色受激发射单元R以及蓝色受激发射单元B位于颜色组P的一条对角线上,两个绿色受激发光单元G位于颜色组P的另一条对角线上;多个颜色组按矩阵排布构成投影屏幕。 [0057] In another embodiment of an embodiment, shown in Figure 4a, in the projection screen according to an embodiment of the present invention, each of the stimulated emission unit 151 are the same size and shape as a square; a red emission stimulated unit R, a blue B cells stimulated emission and stimulated emission unit two green G color group P consisting of a square, and stimulated emission of each color unit in a position P of a fixed color group; red stimulated emission unit R and blue B stimulated emission unit located on a diagonal line of color groups P, the two green excitation light unit receiving color group P G is located in the other diagonal line; a plurality of color groups arranged in a matrix constituting the projection screen .

[0058]以图4a所示的排列规则为例,上述的一个颜色组P实际对应了一个像素单元的位置,在实际应用中,投影系统的扫描方式可为场扫描方式,单色光源11的出射光束在经过显示芯片12后可形成与像素单元个数相同的光束,在经过振镜13的反射后可以入射到投影镜头14的不同位置,从而入射到投影屏幕15的不同位置处。 [0058] The arrangement rule shown in FIG. 4a for example, above a color set corresponding to one pixel P actual cell position, in practice, the scanning of the projection system may be a scanning field, a monochromatic light source 11 outgoing light beam may be formed with the same number of pixel units after display chip beam 12, after reflecting resonator mirror 13 may be incident on the projection lens 14 in different positions, to be incident at different positions of the projection screen 15.

[0059]具体来说,在本发明实施例中,如图4b所示,振镜13可分别以其两条对角线XdPX2 为轴进行旋转,以极快的速度分别在A、B、C、D四个位置振动。 [0059] Specifically, in the embodiment of the present invention, shown in Figure 4b, the galvanometer 13 may be respectively in its two diagonal axis XdPX2 rotated at great speed, respectively, A, B, C , D four position of the vibration. 由于振镜13在A、B、C三个位置持续振动,因此带有不同亮度信号的光束在经过三种不同状态下的振镜之后,会以不同的强度入射到投影屏幕15的不同位置上。 Due to continuous vibration in the vibrating mirror 13 A, B, C three positions, the light beam with different luminance signals after passing through the galvanometer in three different states, is incident to a different position on the projection screen 15 at different strengths . 在振镜13以对角线XiS轴进行旋转时,其振动位置为A和B;在振镜13以对角线X2为轴进行旋转时,其振动位置为C和D。 When the vibration mirror 13 is rotated in a diagonal XiS shaft vibration position A and B; when the galvanometer 13 is rotated in a diagonal axis X2, which vibration is C and D. 振镜13在A、B、C、D四个位置持续振动,带有不同亮度信号的光束在经过四种不同状态下的振镜之后,会以不同的强度入射到投影屏幕15的不同位置上。 In continuous vibration galvanometer 13 A, B, C, D four positions, light beams with different luminance signal through the galvanometer after in four different states, is incident to a different position on the projection screen 15 at different strengths . 例如,如图4b所示,当振镜13沿对角线心为轴且状态处于A位置时,多光束刚好入射到投影屏幕15中红色受激发射单元R所在的位置,因此红色受激发射单元R在受到光照之后受激发射红色光,投影屏幕显示阵列排布的红色亮点r,如图4c所示;同样地,当振镜13的状态处于B位置时,多光束刚好入射到投影屏幕15中蓝色受激发射单元B所在的位置,因此蓝色受激发射单元B在受到光照之后受激发射蓝色光,投影屏幕显示阵列排布的蓝色亮点b,如图4d所示;当振镜13沿对角线X2为轴且状态处于C位置时,多光束刚好入射到投影屏幕15中绿色受激发射单元G所在的位置,因此绿色受激发射单元G在受到光照之后受激发射绿色光,投影屏幕显示阵列排布的绿色亮点g,如图4e所示;当振镜13的状态处于D位置时,多光束刚好入射到投影屏幕15中绿色受激发射单元G所在的位置,因 For example, shown in Figure 4b, when the center axis galvanometer 13 diagonal direction and the state in the position A, just the multi-beam projection screen 15 is incident to a position in the stimulated emission of red R unit is located, so stimulated emission of red after the R light by means of stimulated emission of red light, a projection screen displays a red highlight r arranged in an array, shown in Figure 4c; Similarly, when the vibrating mirror 13 is in the state B position, just the multi-beam incident on the projection screen 15 blue B cells stimulated emission position is located, so blue in B cells stimulated emission by the light emitting blue light after stimulated, arrayed projection screen highlight blue B, shown in Figure 4d; when when the vibrating mirror 13 in the diagonal axis X2 and the state in which the position C, the multi-beam incident on the projection screen position just green G stimulated emission unit 15 is located, so stimulated emission unit green G light after being stimulated emission green light, and a projection screen arranged in an array green bright g, shown in Figure 4e; state when the vibrating mirror 13 is in the D position, the multi-beam position is just the projection screen 15 is incident to the green G stimulated emission unit is located, because 此绿色受激发射单元G在受到光照之后受激发射绿色光,投影屏幕显示阵列排布的绿色亮点g,如图4f所示。 This stimulated emission unit green G light after being stimulated emission of green light, a projection screen arranged in an array of green bright g, 4f shown in FIG. 当振镜13以人眼无法识别的速度在A、B、C、D四个位置持续振动时,由于人眼对图像的滞留作用,人眼所观看到图形如图4g所示,以虚线框中的一个红色发光点r、两个绿色发光点g和一个蓝色发光点b作为一个像素单元(Pixel)时,当每个像素单元中的不同颜色的发光点都具有其对应的亮度时,即可观看到显示面画。 When the galvanometer speed of the human eye does not recognize continuous vibration at A, B, C, D four positions 13, because the human eye image retention effect on the human eye as viewed in FIG. 4g pattern shown in dashed boxes when a red light emitting point in the r, g and two green light emitting points emitting a blue point b as a pixel unit (pixel), when the light emitting points of different colors in each pixel unit has a corresponding brightness, you can watch the show in the picture.

[0060] 相比较上述如图3a_3f所示的实施方式和如图4a-4g所示的实施方式,后者基于实际应用中绿色的亮度输出最大,因此在一个像素单元中采用两个绿色发光点g,提高了显示亮度。 [0060] compared to the above-described embodiment and the embodiment shown in FIG 3a_3f embodiment shown in FIG. 4a-4g, the latter is the maximum, so the use of two green light emitting points in a pixel unit basis in the practical application of the green light output g, to improve the display brightness. 此外,前者相同颜色的发光点在相邻两个像素单元中相差两个发光点的距离,而后者仅相差一个发光点的距离,因此相对于前者开口率更高,显示效果较佳。 Further, the former light-emitting point of the same color in two adjacent pixels differ from the cells of the two light emitting points, which only differ from one light emitting point, and therefore a higher aperture ratio with respect to the former, better display effect. 而前者在制作投影屏幕时显然易于后者,因此在实际应用中,可根据实际需求来选择适合的投影屏幕形式。 In the production while the former projection screen readily apparent latter, so in practical applications, may be selected for the form of a projection screen according to the actual needs. 以上的实施方式均为举例说明,其它采用本发明构思而设计的其它排列规则的投影屏幕属于本发明的保护范围。 The above embodiments are illustrated, other arrangements other rules designed using the inventive concept projection screen fall within the scope of the present invention.

[0061] 进一步地,在具体实施时,本发明实施例提供的上述投影屏幕,既可作为前投影系统中的前投屏幕,也可作为背投系统中的背投屏幕。 [0061] Further, in the specific embodiment, the projection screen according to an embodiment of the present invention, can be used as a front projection system front projection screen, rear projection system may also be used as a rear projection screen.

[0062] 在上述投影屏幕为前投屏幕时,如图5a所示,包括沿投影镜头背离振镜方向上依次设置的保护层152、由各受激发射单元组成的受激发射层150以及反射层153。 [0062] When the projection screen is a front projection screen shown in Figure 5a, including a projection lens facing away from the protective layer along the direction of the galvanometer 152 are sequentially disposed, stimulated emission by the stimulated emission layer 150 and reflection units layer 153. 对于前投屏幕来说,观看者与投影设备位于同一侧,经过投影镜头的光线向前制度屏幕内入射,受激发射层150吸收入射光能量受激发射至少三种基色光,一部分激发光直接向观看者一侧发射, 一部分激发光向反射层153发射,经过反射层153的反射后再次向观看者一侧出射。 For front projection screen, a viewer on the same side with the projection device, the light incident through the projection lens system forward screen, stimulated emission layer 150 absorbs incident light by stimulated emission of energy at least three primary color lights, a part of the excitation light is directly transmitting to the viewer side, part of the excitation light-emitting retroreflective layer 153, after reflected by the reflective layer 153 is emitted to a viewer side again.

[0063] 在上述投影屏幕为背投屏幕时,如图5b所示,包括沿投影镜头背离振镜方向上依次设置的二向色层154、由各受激发射单元组成的受激发射层150以及保护层152。 [0063] When the projection screen is a rear projection screen shown in Figure 5b, comprising a projection lens in a direction away from the oscillating mirror are sequentially arranged the dichroic layer 154, each layer of stimulated emission of stimulated emission units 150 and a protective layer 152. 经过投影镜头的光束首先透过二向色层154照射至受激发射层150,受激发射层150吸收入射光能量受激发射至少三种基色光,再向保护层152—侧出射,最终入射至人眼。 After the light beam is first transmitted through two projection lens to stimulated emission layer 150 is irradiated to the color layer 154, stimulated emission layer 150 absorbs incident light by stimulated emission of energy at least three primary color lights, again exit side protective layer 152-, the final incident human eye. 二向色层154的作用为通过单色光源的光,而反射受激发射层150的激发光,由此可以提高投影屏幕的显示亮度,提升显示效果。 Dichroic effect through the colored layer 154 is a monochromatic light source, the excitation light reflecting stimulated emission layer 150, thereby improving the display luminance of the projection screen, to enhance the display effect.

[0064]在实际应用中,制作上述受激发射层通常具有受激发射性质的荧光转换材料。 [0064] In practical applications, the above-described production stimulated emission phosphor conversion material layer generally have stimulated emission properties. 与现有的菲涅尔光学屏幕相比,由于本发明实施例提供的上述投影屏幕为发光屏幕,且采用的荧光转换材料发光角度范围较大,因而可视角度范围相比于现有的光学屏幕更大,显示效果佳。 Compared with a conventional Fresnel optical screen, since the projection screen provided by the embodiment of the present invention is a light emitting screen and a fluorescent conversion material used in a large emission angle range, and thus the viewing angle range as compared to the conventional optical a larger screen, showing good results. 反射层153可以采用镀膜或涂覆反光材料的方式进行制作,在此不做限定。 The reflective layer 153 may be coated using the coating method or reflective material is produced, which is not defined.

[0065]作为一种优选的实施方案,受激发射单元为量子点单元,即受激发射单元的材料可采用量子点材料。 [0065] As a preferred embodiment, the stimulated emission unit quantum dot unit, i.e., the material may be employed by the stimulated emission unit quantum dot material.

[0066] 进一步地,量子点单元的材料为锌、镉、硒、硫元素的化合物,是一种半导体材料, 为直径约为2-1 Onm的纳米粒子。 [0066] Further, the material of the quantum dot cell a compound of zinc, cadmium, selenium, sulfur element, a semiconductor material, having a diameter of about 2-1 Onm nanoparticles. 量子点的发光性质可以通过改变量子点的尺寸来调控。 Luminescent properties of quantum dots can be regulated by changing the size of the quantum dots. 通过改变量子点材料的尺寸和化学组成可以使其荧光发射波长覆盖整个可见光区。 By changing the size and chemical composition of the quantum dot material it can cover the entire visible fluorescence emission wavelength region. 通常情况下,量子点越小,发出光越偏蓝,反之量子点越大,发出的光越偏红。 Normally, the quantum dot is smaller, the bluish light is emitted, whereas the larger quantum dots, the more reddish light emitted.

[0067]当单色光源为蓝色激光光源时,投影屏幕上设置的蓝色量子点材料满足能够受激发射蓝光,绿色量子点材料满足能够受激发射绿光,红色量子点材料满足能够受激发射红光。 [0067] When a monochromatic light source is a blue laser light source, a blue quantum dot material is disposed on a projection screen capable of stimulated emission meet blue, green quantum dot material capable of stimulated emission satisfy green, red quantum dot material can be satisfied by stimulated emission of red light.

[0068]其中,蓝光量子点的荧光频谱吸收范围为350-400nm。 [0068] wherein the spectral absorption range of blue fluorescent quantum dots is 350-400nm. 由硫化镉及硫化锌组成的核壳结构可以发射出蓝光,并且相同量子点材料随着尺寸的减小,焚光吸收谱发生蓝移。 Zinc sulfide, cadmium sulfide and a core-shell structure composed may emit blue light, quantum dot material and the same size decreases, burning blue shift of the light absorption spectrum. 首先将硫化二纳水溶液与钠二乙基己基溶液混合,然后与氯化镉前驱体溶液混合制备出了硫化镉量子点材料。 First, an aqueous solution of sodium sulfide and sodium diethylhexyl solutions were mixed, and then mixed with the precursor solution of cadmium chloride prepared CdS quantum dot material. 再将二氯化锌溶液注入到硫化镉量子点溶液中制备出硫化锌壳结构。 Then zinc chloride solution was poured into a solution of CdS quantum dots prepared ZnS shell structure. 在紫外光激发下,硫化镉/硫化锌核壳结构发射出的可见光波长受到量子点尺寸和壳层厚度的影响。 Under UV excitation, the wavelength of visible light CdS / ZnS core-shell structure is influenced by the emitted quantum dot size and shell thickness.

[0069] 绿光量子点的荧光频谱吸收范围为450-550nm。 [0069] The spectral absorption range of the green fluorescent quantum dots is 450-550nm. 在高温条件下将氧化镉溶解于十四烷基磷酸中,将砸粉溶解于三辛基膦注入到氧化镉溶液中,在190-2HTC环境下反应制备出硒化镉量子点材料。 Under high temperature conditions tetradecyl oxide, cadmium oxide dissolved in phosphoric acid, the powder is dissolved in drop trioctylphosphine oxide, cadmium injected into the solution, prepared by reaction of a cadmium selenide quantum dot material in 190-2HTC environment. 经检测,这种量子点结构的发光效率更好,主要是由于高温条件下制备出的硒化镉量子点结构的禁带势垒变宽,使得量子点受激发射的光子的能量变大。 After testing, the light emitting efficiency of such a quantum dot structure better, mainly due to ban cadmium selenide quantum dot structures prepared under high temperature barrier wider band, so that the quantum dot energy by stimulated emission of photons becomes large.

[0070] 除此之外,本发明实施例提供的上述单色光源11除蓝光光源外,还可为紫光光源或紫外光源。 [0070] In addition, the light source 11 in addition to blue, violet light or ultraviolet light may also be a source of the monochromatic light source according to an embodiment of the present invention. 受激发射单元151也可采用荧光材料的发光单元,在此不做限定,只要采用本发明构思而置换的其它可应用的单色光源以及受激发射材料均落入本发明的保护范围。 Stimulated emission unit emitting unit 151 may also be a fluorescent material, which is not defined, a monochromatic light source, and stimulated emission as long as the materials employed and the inventive concept may be replaced with other applications fall within the scope of the present invention.

[0071] 在具体实施时,在本发明实施例提供的上述投影系统中,如图6所示,还包括:位于单色光源11出光一侧的整形透镜16,以及设置在单色光源11与显示芯片12之间的集光器17。 [0071] In a specific embodiment, the projection system provided in the embodiment of the present invention, as shown in FIG 6, further comprising: a monochromatic light source 11 side of the light shaping lens 16, and provided with a monochromatic light source 11 the collector 17 between display chip 12. 实际应用中单色光源通常采用单色激光器,而激光器出射的激光具有不对称、像散等缺陷,因此需要在激光器的出光则设置整形透镜16对出射激光进行整形。 Practical applications usually monochromatic laser monochromatic light source, the laser beam emitted laser has an asymmetric, defects such as astigmatism, it is necessary shaping lens 16 pairs of the set outgoing laser beam shaping of the laser light. 而集光器17可以将整形后的激光有效收集到显示芯片上以使显示芯片对入射的光束进行信号调制。 The light collector 17 can be effectively collected by the shaped laser light onto the display so that the display chip to chip signal modulation incident light beam.

[0072] 本发明实施例提供的投影系统,包括:单色光源、显示芯片、振镜、投影镜头以及投影屏幕;显示芯片,用于接收单色光源的出射光束,并对接收到的光束进行调制后入射到振镜;振镜,用于改变光束入射到投影镜头的位置,以改变光束经过投影镜头入射到投影屏幕上的位置;投影屏幕由至少三种受激发射单元按照设定规则排列而成,每种受激发射单元在经过单色光源的光照后受激发射特定颜色的光。 [0072] The embodiment of the present invention is provided in a projection system, comprising: a monochromatic light source, a display chip, a vibration mirror, a projection lens and a projection screen; display chip, for receiving the outgoing light beam of a monochromatic light source, and the received light beams modulated incident galvanometer; galvanometer for changing the light beam incident on the projection lens position to change the incident beam passes through the projection lens onto the projection screen position; projection screen by the stimulated emission of at least three units are arranged according to a set rule from each stimulated emission unit after the light source of monochromatic light of a certain color stimulated emission. 由于投影屏幕中包括的受激发射单元可在受到光照后发出特定颜色的光,因此本发明实施例提供的上述投影屏幕只需要在各像素位置发出特定颜色的特定强度的光线即可显示清晰画面,而不再将投影屏幕作为接收屏接收投影镜头的成像显示图像,从而不存在由投影镜头造成的场曲问题,投影镜头只需要针对单色光成像,大大降低了镜头的设置难度。 Since stimulated emission projection screen unit may be included in a specific color of light emitted by the light in the post, thus the above-described embodiment of the present invention to provide a projection screen embodiment need only emit light of a specific intensity of a particular color to each pixel position in the display screen clear , and no longer as a projection screen forming a display image receiving screen receiving the projection lens, so that there is curvature of field problems caused by the projection lens, the projection lens only for monochromatic image, greatly reduces the difficulty of setting the lens.

[0073] 尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例做出另外的变更和修改。 [0073] While the present invention has been described with preferred embodiments, but those skilled in the art from the underlying inventive concept can make further modifications and variations to these embodiments. 所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。 Therefore, the appended claims are intended to explain embodiments including the preferred embodiment as fall within the scope of the invention and all changes and modifications.

[0074] 显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 [0074] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (12)

  1. 1. 一种投影系统,其特征在于,包括:单色光源、显示芯片、振镜、投影镜头以及投影屏幕;其中, _ 所述显示芯片,用于接收所述单色光源的出射光束,并对接收到的光束进行调制后入射到所述振镜; 所述振镜,用于改变光束入射到所述投影镜头的位置,以改变光束经过所述投影镜头入射到所述投影屏幕上的位置; > 所述投影屏幕由至少三种受激发射单元按照设定规则排列而成,每种所述受激发射单元在经过所述单色光源的光照后受激发射特定颜色的光。 A projection system comprising: a monochromatic light source, a display chip, a vibration mirror, a projection lens and a projection screen; wherein _ the display chip, for receiving the outgoing light beam is a monochromatic light source, and after the received beam is incident to said modulating galvanometer; a galvanometer for changing the position of the beam incident to the projection lens to vary the beam incident through the projection lens onto the projection screen position ;> the arrangement of at least three projection screen stimulated emission unit formed in accordance with a set rule, each of said stimulated light emission unit after the monochromatic light of a specific color light by stimulated emission.
  2. 2. 如权利要求1所述的投影系统,其特征在于,所述投影镜头为超短焦投影镜头。 2. The projection system according to claim 1, wherein said projection lens is a short throw projection lens.
  3. 3. 如权利要求1所述的投影系统,其特征在于,所述投影屏幕包括:红色受激发射单元、 绿色受激发射单元以及蓝色受激发射单元。 3. The projection system according to claim 1, wherein said projection screen comprising: a red cell stimulated emission, green and blue cells stimulated emission stimulated emission unit.
  4. 4. 如权利要求3所述的投影系统,其特征在于,各所述受激发射单元为尺寸形状均相同的条形;所述红色受激发射单元、绿色受激发射单元以及蓝色受激发射单元平行并排排列, 并以固定的颜色顺序反复排列。 4. The projection system according to claim 3, wherein each of said stimulated emission units are the same size and shape as the strip; stimulated emission of the red cell, green and blue cells stimulated emission stimulated transmitting means arranged side by side in parallel, and in a fixed sequence of colors are repeatedly arranged.
  5. 5. 如权利要求3所述的投影系统,其特征在于,各所述受激发射单元为尺寸形状均,同的方形;一个所述红色受激发射单元、一个所述蓝色受激发射单元以及两个所述绿色受激发射单元组成一个方形颜色组,且各颜色的受激发射单元在所述颜色组中的位置固定;所述红色受激发射单元以及所述蓝色受激发射单元位于所述颜色组的一条对角线上,两个所述绿色受激发光单元位于所述颜色组的另一条对角线上; 多个所述颜色组按矩阵排布构成所述投影屏幕。 5. The projection system according to claim 3, wherein each of said stimulated emission unit dimensions and shape are the same square; a stimulated emission of the red cell, a stimulated emission of the blue cells the two green and stimulated emission units a square color group, and stimulated emission of each color in the color set means a position in fixed; the red cells stimulated emission and stimulated emission of the blue cells located on a diagonal line of the color set, the two green excitation light receiving unit is located on the other diagonal of the color set; a plurality of said color groups are arranged in a matrix constituting the projection screen.
  6. 6. 如权利要求1所述的投影系统,其特征在于,所述投影屏幕为前投屏幕,包括沿所述投影镜头背离所述振镜方向上依次设置的保护层、由各所述受激发射单元组成的受激发射层以及反射层。 6. The projection system of claim 1, wherein said projection screen is a front projection screen, including along the projection lens facing away from the protective layer are sequentially disposed galvanometer direction, each said stimulated stimulated emission layer of the emission units and a reflective layer.
  7. 7. 如权利要求1所述的投影系统,其特征在于,所述投影屏幕为背投屏幕,包括^所述投影镜头背离所述振镜方向止依次设置的二向色层、由各所述受激发射单元组成的受激发射层以及保护层。 7. The projection system according to claim 1, wherein said projection screen is a rear projection screen, comprising a dichroic layer, said projection lens ^ galvanometer direction away from the stop sequentially arranged, each of said stimulated emission layer and a protective layer stimulated emission units. _ _
  8. 8. 如权利要求1-7任一项所述的投影系统,其特征在于,所述受激发射单元为量子点单元或荧光单元。 8. The projection system of any one of claims 1-7, wherein said cell is stimulated emission quantum dots or fluorescent cell units.
  9. 9. 如权利要求8所述的投影系统,其特征在于,所述量子点单元的材料为锌、镉、硒、硫元素的化合物。 9. The projection system according to claim 8, wherein the zinc compound, cadmium, selenium, sulfur element unit of the quantum dot material.
  10. 10. 如权利要求1-7任一项所述的投影系统,其特征在于,所述单色光源为蓝光光源、紫光光源或紫外光源。 10. The projection system of any one of claims 1-7, wherein the monochromatic light source is a blue light, violet light, or ultraviolet light source.
  11. 11. 如权利要求1-7任一项所述的投影系统,其特征在于,还包括:位于所述单色光源出光一侧的整形透镜。 11. The projection system of any one of claims 1-7, characterized in that, further comprising: a light shaping lens side of the monochromatic light sources.
  12. 12. 如权利要求1-7任一项所述的投影系统,其特征在于,还包括:设置在所述单色光源与所述显示芯片之间的集光器。 12. The projection system of any one of claims 1-7, characterized in that, further comprising: a monochromatic light source disposed in the display and the chip between the collector.
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CN103339563A (en) * 2011-01-31 2013-10-02 日本电气株式会社 Fluorescent screen and image display device comprising same
CN104614929A (en) * 2015-02-12 2015-05-13 南京中科神光科技有限公司 Multi-image projection display device and multi-image projection method

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