CN104238250A - Mini-type LCOS projection optical engine - Google Patents
Mini-type LCOS projection optical engine Download PDFInfo
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Abstract
本发明提供了一种微型LCOS投影光学引擎,包含光发射单元以及设置于光线传播方向上的成像单元和投影单元,根据本发明提供的LCOS投影光学引擎,由于光发射单元包含用于发出光线的光源以及用于将光源发出的点光源转换为面光源的光导板,光源采用多个小功率白光LED以点阵列排列,导光板包括导光面、反射面以及带有3D纹理结构的出光面,只需一块导光板即可实现光线的均匀出射,使得本发明提供的微型LCOS投影光学引擎结构简单、体积小,光能利用率高,进而成本得以降低。
The present invention provides a kind of miniature LCOS projection optical engine, comprising a light emitting unit and an imaging unit and a projection unit arranged on the light propagation direction, according to the LCOS projection optical engine provided by the present invention, since the light emitting unit includes a The light source and the light guide plate used to convert the point light source emitted by the light source into a surface light source. The light source adopts a plurality of low-power white LEDs arranged in a point array. The light guide plate includes a light guide surface, a reflective surface and a light output surface with a 3D texture structure. Only one light guide plate is needed to achieve uniform emission of light, so that the micro LCOS projection optical engine provided by the present invention has a simple structure, small volume, high utilization rate of light energy, and further reduces the cost.
Description
技术领域technical field
本发明属于光学成像领域,具体涉及一种微型LCOS投影光学引擎。The invention belongs to the field of optical imaging, in particular to a miniature LCOS projection optical engine.
背景技术Background technique
投影显示技术是指利用光学系统和投影空间把图像放大并显示在投影屏幕上的方法。随着智能手机及可穿戴设备的流行,对不同场景下的显示提出更多要求。其中微型化的投影仪由于具有体积小重量轻且可以满足投影的基本功能,非常适合在此类设备上集成,拓展了投影仪的使用范围,具有广阔的市场前景。Projection display technology refers to the method of using optical system and projection space to enlarge the image and display it on the projection screen. With the popularity of smart phones and wearable devices, there are more requirements for displays in different scenarios. Among them, the miniaturized projector is very suitable for integration on such devices due to its small size, light weight and ability to meet the basic functions of projection, which expands the scope of use of the projector and has broad market prospects.
LCOS光学引擎作为基本微型投影技术之一,较于其它技术具有价格低廉,投影性能优异的特点,是最有可能商业化的微型投影技术。LCOS光学引擎系统一般包括光源、显示芯片和成像系统,传统的LCOS光学引擎系统采用复眼阵列完成光线在照明板上由不均匀分布到均匀分布的空间转换,但复眼阵列实现均匀照明时,需要两列光轴互相平行的复眼阵列,在第二列复眼阵列后还需要放置一个聚光镜,其结构较复杂、体积较大,致使LCOS光学引擎的成本较高。As one of the basic micro-projection technologies, LCOS optical engine has the characteristics of low price and excellent projection performance compared with other technologies, and it is the most likely commercialized micro-projection technology. The LCOS optical engine system generally includes a light source, a display chip and an imaging system. The traditional LCOS optical engine system uses a compound eye array to complete the spatial conversion of light from uneven distribution to uniform distribution on the lighting panel. However, when the compound eye array achieves uniform illumination, two For compound eye arrays whose optical axes are parallel to each other, a condenser lens needs to be placed behind the second compound eye array, which has a complex structure and a large volume, resulting in a high cost of the LCOS optical engine.
发明内容Contents of the invention
本发明是为解决上述问题而进行的,目的在于通过提供一种采用导光板完成光线在照明板上由不均匀分布到均匀分布的空间转换的微型LCOS投影光学引擎,进一步简化现有微型LCOS投影光学引擎的结构,同时减小体积。The present invention is carried out in order to solve the above problems, and the purpose is to further simplify the existing micro LCOS projection by providing a micro LCOS projection optical engine that uses a light guide plate to complete the space conversion of light from uneven distribution to uniform distribution on the lighting plate. The structure of the optical engine while reducing the volume.
本发明采用了如下技术方案:The present invention adopts following technical scheme:
本发明提供的微型LCOS投影光学引擎,具有这样的特征,包括:光发射单元,用于发射光线,包括光源和设置于光线传播方向上的导光板,光源用于发出光线,导光板用于将光源发出的线光源转变为面光源;成像单元,和光发射单元连接,用于光发射单元发射光线的成像;以及投影单元,和成像单元连接,用于将成像单元形成的图像投射在屏幕上。The miniature LCOS projection optical engine provided by the present invention has such characteristics, including: a light emitting unit for emitting light, including a light source and a light guide plate arranged on the light propagation direction, the light source is used for emitting light, and the light guide plate is used for The line light source emitted by the light source is transformed into a surface light source; the imaging unit is connected with the light emitting unit for imaging the light emitted by the light emitting unit; and the projection unit is connected with the imaging unit and is used for projecting the image formed by the imaging unit on the screen.
其中,导光板包括导光面、反射面以及出光面,导光面和光发射单元出口相对,用于导入光源发出的光线,反射面用于将导光面导入的光线反射至出光面上,出光面和成像单元相对设置,用于将光线均匀地从导光板中出射,出光面带有3D纹理结构,3D纹理结构用于对反射面反射出的光线进行散射,使得光线均匀地从出光面出射。Wherein, the light guide plate includes a light guide surface, a reflective surface, and a light output surface. The light guide surface is opposite to the exit of the light emission unit, and is used to guide the light emitted by the light source. The surface and the imaging unit are set opposite to each other, and are used to uniformly emit light from the light guide plate. The light-emitting surface has a 3D texture structure, and the 3D texture structure is used to scatter the light reflected from the reflective surface, so that the light is evenly emitted from the light-emitting surface. .
本发明提供的微型LCOS投影光学引擎,还可以具有这样的特征:成像单元包括顺序连接的PBS棱镜以及LCOS芯片,PBS棱镜用于将光发射单元入射的非偏振光分成两束互相垂直的P线偏振光和S线偏振光,LCOS芯片用于将PBS棱镜的透过光,转换为彩色图像。The miniature LCOS projection optical engine provided by the present invention can also have such characteristics: the imaging unit includes PBS prisms and LCOS chips connected in sequence, and the PBS prism is used to divide the unpolarized light incident by the light emitting unit into two bundles of mutually perpendicular P lines Polarized light and S linearly polarized light, the LCOS chip is used to convert the transmitted light of the PBS prism into a color image.
本发明提供的微型LCOS投影光学引擎,还可以具有这样的特征:光发射单元还包括紫外吸收组件,用于吸收光发射单元发出光线中的紫外线。The miniature LCOS projection optical engine provided by the present invention may also have such a feature: the light emitting unit further includes an ultraviolet absorbing component for absorbing ultraviolet rays in the light emitted by the light emitting unit.
本发明提供的微型LCOS投影光学引擎,还可以具有这样的特征:光源由至少一个白光LED以及反光面组成,白光LED用于发出光线,反光面用于收集光线,并将光线注入导光板中。The miniature LCOS projection optical engine provided by the present invention can also have the following features: the light source is composed of at least one white LED and a reflective surface, the white LED is used to emit light, and the reflective surface is used to collect light and inject the light into the light guide plate.
本发明提供的微型LCOS投影光学引擎,还可以具有这样的特征:成像单元还包括偏振组件,所述偏振组件位于所述PBS棱镜和所述LCOS芯片之间,用于滤除所述彩色图像中的杂光。The miniature LCOS projection optical engine provided by the present invention can also have such a feature: the imaging unit also includes a polarizing component, and the polarizing component is located between the PBS prism and the LCOS chip, and is used to filter out stray light.
本发明提供的微型LCOS投影光学引擎,还可以具有这样的特征:LCOS芯片为彩色滤光型。The miniature LCOS projection optical engine provided by the present invention can also have the feature that the LCOS chip is a color filter type.
本发明提供的微型LCOS投影光学引擎,还可以具有这样的特征:LCOS芯片内具有信号控制光阀组件,信号控制光阀组件用于将PBS棱镜的透过的白光转换为彩色图像,同时将彩色图像转换为P线偏振光。The miniature LCOS projection optical engine provided by the present invention can also have such characteristics: there is a signal control light valve assembly in the LCOS chip, and the signal control light valve assembly is used to convert the white light transmitted by the PBS prism into a color image, and simultaneously convert the color image Images were converted to P-linearly polarized light.
发明作用与效果Invention function and effect
本发明提供了一种微型LCOS投影光学引擎,包含光发射单元以及设置于光线传播方向上的成像单元和投影单元,根据本发明提供的LCOS投影光学引擎,由于光发射单元包含用于发出光线的光源以及用于将光源发出的点光源转换为面光源的光导板,光源采用多个小功率白光LED以点阵列排列,导光板包括导光面、反射面以及带有3D纹理结构的出光面,只需一块导光板即可实现光线的均匀出射,使得本发明提供的微型LCOS投影光学引擎结构简单、体积小,光能利用率高,进而成本得以降低。The present invention provides a kind of miniature LCOS projection optical engine, comprising a light emitting unit and an imaging unit and a projection unit arranged on the light propagation direction, according to the LCOS projection optical engine provided by the present invention, since the light emitting unit includes a The light source and the light guide plate used to convert the point light source emitted by the light source into a surface light source. The light source adopts a plurality of low-power white LEDs arranged in a point array. The light guide plate includes a light guide surface, a reflective surface and a light output surface with a 3D texture structure. Only one light guide plate is needed to achieve uniform emission of light, so that the micro LCOS projection optical engine provided by the present invention has a simple structure, small volume, high utilization rate of light energy, and further reduces the cost.
附图说明Description of drawings
图1是本发明的微型LCOS投影光学引擎的结构示意图;Fig. 1 is the structural representation of miniature LCOS projection optical engine of the present invention;
图2是本发明的光源的结构示意图;Fig. 2 is a schematic structural view of the light source of the present invention;
图3是本发明的导光板的结构示意图;3 is a schematic structural view of the light guide plate of the present invention;
图4是本发明中上面的结构示意图。Fig. 4 is a schematic diagram of the upper structure of the present invention.
具体实施方式Detailed ways
以下结合附图来说明本发明的具体实施方式。The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.
本实施例以白光LED、楔形导光板、PBS棱镜、彩色滤光型LCOS芯片对本发明的微型LCOS投影光学引擎进行系统说明,但本实施例的范围并不限定本发明的范围。In this embodiment, a white light LED, a wedge-shaped light guide plate, a PBS prism, and a color filter type LCOS chip are used to systematically illustrate the miniature LCOS projection optical engine of the present invention, but the scope of this embodiment does not limit the scope of the present invention.
图1为本实施例的微型LCOS投影光学引擎的结构示意图。FIG. 1 is a schematic structural diagram of the micro LCOS projection optical engine of this embodiment.
如图1所示,微型LCOS投影光学引擎100包括光发射单元1、成像单元2、投影单元3以及屏幕4,光发射单元1包括光源11、导光板12以及紫外吸收组件13,成像单元2包括PBS棱镜21、LCOS芯片22以及位于PBS棱镜21与LCOS芯片22之间的偏振片23,LCOS芯片22中还带有信号控制光阀组件221。As shown in Figure 1, the micro LCOS projection optical engine 100 includes a light emitting unit 1, an imaging unit 2, a projection unit 3 and a screen 4, the light emitting unit 1 includes a light source 11, a light guide plate 12 and an ultraviolet absorbing assembly 13, and the imaging unit 2 includes The PBS prism 21 , the LCOS chip 22 and the polarizer 23 located between the PBS prism 21 and the LCOS chip 22 , and the LCOS chip 22 also has a signal control light valve assembly 221 .
光源11用于发射光线,导光板12用于将光源发出的线光源转变为面光源,紫外吸收组件13用于吸收导光板射出光线中的紫外线,避免紫外线对LCOS芯片22的损害;成像单元2中,PBS棱镜21用于将光发射单元1入射的非偏振光分成两束互相垂直的P线偏振光和S线偏振光,LCOS芯片22用于将PBS棱镜的透过光,转换为彩色图像,偏振片23用于滤除彩色图像中的杂光。The light source 11 is used to emit light, the light guide plate 12 is used to convert the line light source emitted by the light source into a surface light source, and the ultraviolet absorbing component 13 is used to absorb the ultraviolet rays in the light emitted by the light guide plate, so as to avoid the damage of ultraviolet rays to the LCOS chip 22; the imaging unit 2 Among them, the PBS prism 21 is used to divide the unpolarized light incident by the light emitting unit 1 into two beams of P linearly polarized light and S linearly polarized light which are perpendicular to each other, and the LCOS chip 22 is used to convert the transmitted light of the PBS prism into a color image , the polarizer 23 is used to filter out the stray light in the color image.
图2为本实施例中的光源的结构示意图。FIG. 2 is a schematic structural diagram of the light source in this embodiment.
如图2所示,光源11包括截面为抛物线的抛物反射面111以及置于反射面底部的多个白光LED阵列112,抛物反射面111内部镀有冷反光膜,多个白光LED阵列112以点阵排列方式进行排列。As shown in Figure 2, the light source 11 includes a parabolic reflective surface 111 with a parabolic cross section and a plurality of white LED arrays 112 placed at the bottom of the reflective surface. The inside of the parabolic reflective surface 111 is coated with a cold reflective film. array arrangement.
图3为本实施例中的导光板的结构示意图。FIG. 3 is a schematic structural diagram of the light guide plate in this embodiment.
图4为本实施例中的上面的结构示意图。Fig. 4 is a schematic diagram of the upper structure in this embodiment.
如图3和图4所示,导光板12包括:侧面121、底面122、斜面123以及上面124,上面124包括带有3D纹理结构的3D纹理面1241以及未被3D纹理结构占据的、位于上面124左侧的左上面1242,底面122和左上面1242互为相对面,3D纹理面1241和斜面123互为相对面。As shown in Figures 3 and 4, the light guide plate 12 includes: a side surface 121, a bottom surface 122, an inclined surface 123, and an upper surface 124, and the upper surface 124 includes a 3D textured surface 1241 with a 3D textured structure and a surface not occupied by the 3D textured structure that is located on the upper surface. The upper left 1242 on the left side of 124, the bottom surface 122 and the upper left 1242 are opposite to each other, and the 3D textured surface 1241 and the slope 123 are opposite to each other.
侧面121为导光面,正对光源11出口,用于导入光源11出射的光线,底面122、斜面123以及左上面1242均镀有反射膜,为反射面,用于将光源11发出的光线反射至作为出光面的3D纹理面1241。The side surface 121 is a light guide surface, facing the exit of the light source 11, and is used to guide the light emitted by the light source 11. The bottom surface 122, the inclined surface 123 and the upper left surface 1242 are all coated with reflective films, which are reflective surfaces, and are used to reflect the light emitted by the light source 11. To the 3D textured surface 1241 as the light-emitting surface.
光源11出射的光线由侧面121导入后,光线通过底面122、斜面123或左上面1242上的反光膜反射至3D纹理面1241,经3D纹理结构散射后,均匀的从导光板12出射;由于光线射入位置不同,有的光线经一次反射既可到达3D纹理面1241(如图3中光线a),有的光线则需经过多个面的多次反射才能被反射至3D纹理面1241中(如图3中的光线b)。After the light emitted by the light source 11 is introduced by the side surface 121, the light is reflected to the 3D textured surface 1241 through the reflective film on the bottom surface 122, the inclined surface 123 or the upper left 1242, and after being scattered by the 3D texture structure, it is evenly emitted from the light guide plate 12; The incident positions are different. Some light rays can reach the 3D textured surface 1241 after one reflection (as shown in light a in FIG. As shown in ray b) in Figure 3.
如图1至图4所示,微型LCOS投影光学引擎100中,光源11中的抛物反射面111横向放置,出口正对导光板12的侧面121,作为出光面的3D纹理面1241正对PBS棱镜21,紫外吸组件13置于3D纹理面1241和PBS棱镜21之间,偏振片23置于LCOS芯片22和PBS棱镜21之间。As shown in Figures 1 to 4, in the miniature LCOS projection optical engine 100, the parabolic reflective surface 111 in the light source 11 is placed laterally, the outlet faces the side 121 of the light guide plate 12, and the 3D textured surface 1241 as the light-emitting surface faces the PBS prism 21 , the ultraviolet absorbing component 13 is placed between the 3D textured surface 1241 and the PBS prism 21 , and the polarizer 23 is placed between the LCOS chip 22 and the PBS prism 21 .
微型LCOS投影光学引擎100的实现过程为:白光LED112发出光线,由抛物反光面111收集,并通过其内的冷反光膜反射注入到导光板12中的侧面121中,光线在导光板12内经多次反射以及3D纹理面1241的散射后,均匀的从导光板12出射,通过紫外吸收组件13对光线中的紫外线进行二次吸收、过滤,然后进入PBS棱镜21;PBS棱镜21将光发射单元1出射的非偏振光分成两束互相垂直的P线偏振光和S线偏振光,S线偏振光透过PBS棱镜21,P线偏振光则被反射,透过的S线偏振光进入LCOS芯片22,LCOS芯片22中的信号控制光阀组件221,将白光形成RGB组合的彩色图像,并在内部将以彩色图像呈现的S线偏振光转换成P线偏振光,经过偏振片23滤除杂光后,被PBS棱镜21反射,反射光线经过投影单元3,投射在屏幕4上,得到理想的新型、清晰的图像。The realization process of the miniature LCOS projection optical engine 100 is as follows: the white light LED 112 emits light, which is collected by the parabolic reflective surface 111, and injected into the side 121 of the light guide plate 12 through the reflection of the cold reflective film inside, and the light passes through the light guide plate 12 through multiple After the secondary reflection and the scattering of the 3D textured surface 1241, it is evenly emitted from the light guide plate 12, and the ultraviolet light in the light is secondarily absorbed and filtered by the ultraviolet absorbing component 13, and then enters the PBS prism 21; the PBS prism 21 converts the light emitting unit 1 The outgoing unpolarized light is divided into two beams of P linearly polarized light and S linearly polarized light that are perpendicular to each other, the S linearly polarized light passes through the PBS prism 21, the P linearly polarized light is reflected, and the transmitted S linearly polarized light enters the LCOS chip 22 , the signal in the LCOS chip 22 controls the light valve assembly 221 to form white light into a color image of RGB combination, and internally converts the S linearly polarized light presented in the color image into P linearly polarized light, and filters out the stray light through the polarizer 23 Finally, it is reflected by the PBS prism 21, and the reflected light passes through the projection unit 3 and is projected on the screen 4 to obtain an ideal new and clear image.
本实施例中,3D纹理结构由多个小的凸起结构构成,小凸起的形状为圆形或多角形。In this embodiment, the 3D texture structure is composed of a plurality of small protrusion structures, and the shape of the small protrusions is circular or polygonal.
实施例作用与效果Function and effect of embodiment
本实施例提供了一种微型LCOS投影光学引擎,包含光发射单元以及设置于光线传播方向上的成像单元和投影单元,根据本发明提供的LCOS投影光学引擎,由于光发射单元包含用于发出光线的光源以及用于将光源发出的点光源转换为面光源的导光板,光源采用多个小功率白光LED以点阵列排列,导光板包括导光面、反射面以及带有3D纹理结构的出光面,只需一块导光板即可实现光线的均匀出射,使得本发明提供的微型LCOS投影光学引擎结构简单、体积小,LED的发光效率提高,进而成本得以降低。This embodiment provides a micro LCOS projection optical engine, including a light emitting unit and an imaging unit and a projection unit arranged on the direction of light propagation. According to the LCOS projection optical engine provided by the present invention, since the light emitting unit contains The light source and the light guide plate used to convert the point light source emitted by the light source into a surface light source. The light source adopts a plurality of low-power white LEDs arranged in a point array. The light guide plate includes a light guide surface, a reflective surface and a light output surface with a 3D texture structure. Only one light guide plate is needed to realize the uniform emission of light, so that the micro LCOS projection optical engine provided by the present invention has a simple structure and small volume, and the luminous efficiency of the LED is improved, thereby reducing the cost.
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---|---|---|---|---|
CN108761899A (en) * | 2018-04-19 | 2018-11-06 | 北京灵犀微光科技有限公司 | Light source for liquid crystal on silicon lighting device |
CN110146990A (en) * | 2019-06-17 | 2019-08-20 | 成都晶华光电科技股份有限公司 | Light engine and intelligent glasses |
US11899235B2 (en) | 2018-12-05 | 2024-02-13 | Elbit Systems Ltd. | Display illumination optics |
JP7537461B2 (en) | 2022-03-30 | 2024-08-21 | セイコーエプソン株式会社 | Light source device and projector |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030086066A1 (en) * | 2001-11-02 | 2003-05-08 | Nec Viewtechnology, Ltd. | Polarizing unit, polarizing illumination device using same polarizing unit and projection display device using same polarizing illumination device |
CN101231452A (en) * | 2008-01-31 | 2008-07-30 | 浙江金成科技发展有限公司 | A reflective light valve micro-projector |
CN102243424A (en) * | 2011-06-16 | 2011-11-16 | 中国科学院福建物质结构研究所 | Miniature projection liquid crystal on silicon (LCOS) optical engine |
CN102243376A (en) * | 2011-06-16 | 2011-11-16 | 中国科学院福建物质结构研究所 | High-light-efficiency and high-brightness miniature projection liquid crystal on silicon (LCOS) optical engine |
CN102298253A (en) * | 2010-06-25 | 2011-12-28 | 鸿富锦精密工业(深圳)有限公司 | Miniature silicon crystal projector |
CN102411206A (en) * | 2010-09-23 | 2012-04-11 | 鸿富锦精密工业(深圳)有限公司 | Projection system |
JP2014119472A (en) * | 2012-12-13 | 2014-06-30 | Seiko Epson Corp | Image display system |
-
2014
- 2014-09-23 CN CN201410487487.0A patent/CN104238250A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030086066A1 (en) * | 2001-11-02 | 2003-05-08 | Nec Viewtechnology, Ltd. | Polarizing unit, polarizing illumination device using same polarizing unit and projection display device using same polarizing illumination device |
CN101231452A (en) * | 2008-01-31 | 2008-07-30 | 浙江金成科技发展有限公司 | A reflective light valve micro-projector |
CN102298253A (en) * | 2010-06-25 | 2011-12-28 | 鸿富锦精密工业(深圳)有限公司 | Miniature silicon crystal projector |
CN102411206A (en) * | 2010-09-23 | 2012-04-11 | 鸿富锦精密工业(深圳)有限公司 | Projection system |
CN102243424A (en) * | 2011-06-16 | 2011-11-16 | 中国科学院福建物质结构研究所 | Miniature projection liquid crystal on silicon (LCOS) optical engine |
CN102243376A (en) * | 2011-06-16 | 2011-11-16 | 中国科学院福建物质结构研究所 | High-light-efficiency and high-brightness miniature projection liquid crystal on silicon (LCOS) optical engine |
JP2014119472A (en) * | 2012-12-13 | 2014-06-30 | Seiko Epson Corp | Image display system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108761899A (en) * | 2018-04-19 | 2018-11-06 | 北京灵犀微光科技有限公司 | Light source for liquid crystal on silicon lighting device |
US11899235B2 (en) | 2018-12-05 | 2024-02-13 | Elbit Systems Ltd. | Display illumination optics |
CN110146990A (en) * | 2019-06-17 | 2019-08-20 | 成都晶华光电科技股份有限公司 | Light engine and intelligent glasses |
JP7537461B2 (en) | 2022-03-30 | 2024-08-21 | セイコーエプソン株式会社 | Light source device and projector |
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