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WO2018176613A1 - 一种红外投影系统 - Google Patents

一种红外投影系统 Download PDF

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Publication number
WO2018176613A1
WO2018176613A1 PCT/CN2017/085730 CN2017085730W WO2018176613A1 WO 2018176613 A1 WO2018176613 A1 WO 2018176613A1 CN 2017085730 W CN2017085730 W CN 2017085730W WO 2018176613 A1 WO2018176613 A1 WO 2018176613A1
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Prior art keywords
light
unit
light source
filter
lens
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Ceased
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PCT/CN2017/085730
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English (en)
French (fr)
Inventor
高志强
杨伟樑
赵远
宁曼莹
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Iview Displays Shenzhen Co Ltd
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Iview Displays Shenzhen Co Ltd
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Publication of WO2018176613A1 publication Critical patent/WO2018176613A1/zh
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures

Definitions

  • the invention relates to the field of projection display technology and human-computer interaction, and in particular to an infrared projection system.
  • DMD light modulators Most of the current miniature projection optomes use DLP technology from Texas Instruments, and their main image and light control devices are generally referred to as DMD light modulators. It is a micro-mirror array with extremely high reflectivity. It needs to be combined with the illumination optics and projection optics to convert the commonly used RGB three primary colors into a projection image that is easy for us to see.
  • a commonly used method of combining an illumination optical system and a projection optical system is to use a total internal reflection element having a lens surface.
  • the common human-computer interaction implementation scheme is to use an ordinary incandescent light source projector to project an image, an infrared light source to illuminate the screen, and an infrared camera to capture the screen infrared image, thereby capturing the user's finger movement on the screen.
  • an ordinary incandescent light source projector to project an image
  • an infrared light source to illuminate the screen
  • an infrared camera to capture the screen infrared image, thereby capturing the user's finger movement on the screen.
  • the projection device and the camera device are integrated into one body, which not only simplifies the system, but also makes the operation brightness simple and enables the projection brightness to meet certain requirements.
  • the object of the present invention is to provide a projection system that integrates a projection picture and infrared light and a projection device and an imaging device as a module according to the deficiencies of the prior art, which simplifies the structural composition of the interactive system and makes the operation easier. .
  • the present invention provides the following technical solutions:
  • An infrared projection system comprising: an image system for generating an interactive image and an infrared light projection; a camera module for sequentially acquiring an interactive image and infrared light projected by the projection module; and a projection for projecting the interactive image and the infrared light a region; wherein the projection module comprises: an LED light source unit; an infrared light source unit; a light combining unit for combining the light source emitted by the LED light source unit and the infrared light source unit; and an image display unit for generating a projected image; a lens for receiving an image reflected by the image display unit via the light combining unit; wherein the light combining unit includes a light source for transmitting and reflecting the light source emitted by the LED light source unit and the infrared light source unit and incident on the image display unit Prism group and lens group.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Projection Apparatus (AREA)

Abstract

一种红外投影系统，包括：用于产生交互图像和红外光的投影模块；用于时序性的获取投影模块投射出的交互图像和红外光的摄像模块（600）；以及用于投射交互图像和红外光的投影区域（700）；投影模块包括：LED光源单元（300）；红外光源单元（200）；用于将LED光源单元（300）和红外光源单元（200）发射的光源进行合光的合光单元（100）；用于产生投影图像的图像显示单元（400）；和用于接收来自图像显示单元（400）经合光单元（100）反射的图像的镜头（500）；合光单元（100）包括用于对LED光源单元（300）和红外光源单元（200）发射的光源进行透射和反射并入射到图像显示单元（400）汇合的棱镜组和透镜组。将LED光源和红外光源进行合光，以实现不外设红外装置，来实现人机交互操作。

Description

一种红外投影系统 技术领域
本发明涉及投影显示技术及人机交互领域，特别涉及一种红外投影系统。
背景技术
目前的微型投影光机大部分采用美国德州仪器公司的DLP技术，其主要图像和光线控制器件一般称为DMD光调制器。它是一种反射率极高的微型反射镜阵列，需要配合照明光学系统和投影光学系统将通常使用的RGB三原色构成的画面转换成我们人眼易见的投影画面。其中常用的将照明光学系统和投影光学系统组合在一起的方法是使用一具有透镜表面的全内反射元件。
目前常见的人机交互实现方案为，使用普通白炽灯光源投影机来投影图像，另外设置红外光源来照射屏幕，设置红外摄像机来拍摄屏幕红外影像，以此捕捉使用者在屏幕上手指的动作，以实现人机交互。但这种方式整个系统过于复杂，使用过程中需要调试红外光源，反复进行校正，而且白炽灯的光源亮度远远达不到所需。
结合以上将红外光源和投影光源结合，将投影装置和摄像装置集为一体，不仅可以简化系统，使操作简便更能使投影亮度达到一定要求。
发明内容
本发明的目的在于根据现有技术的不足，提供一种将投影画面和红外光整合在一起且投影装置和摄像装置为一个模组的投影系统，简化了交互系统的结构组成，使操作更简便。
为实现上述目的，本发明提供以下技术方案：
一种红外投影系统，包括：用于产生交互图像和红外光投影模块；用于时序性的获取投影模块投射出的交互图像和红外光的摄像模块；以及用于投射交互图像和红外光的投影区域；其中，所述投影模块包括：LED光源单元；红外光源单元；用于将LED光源单元和红外光源单元发射的光源进行合光的合光单元；用于产生投影图像的图像显示单元；和用于接收来自图像显示单元经合光单元反射的图像的镜头；其中，所述合光单元包括用于对LED光源单元和红外光源单元发射的光源进行透射和反射并入射到图像显示单元汇合的棱镜组和透镜组。

Claims (1)

  1. 优选地，所述的红外光源单元和所述LED光源单元分别位于所述合光单元的不同侧，所述LED光源单元的光经过透镜组的反射和棱镜组的透射到达图像显示单元，红外光源单元的红外光依次透射透镜组和棱镜组到达图像显示单元。
    优选地，所述棱镜组与透镜组之间设置有空隙，相互靠近的面为平面。
    优选地，所述的棱镜组包括一个或多个棱镜。
    优选地，所述的透镜组包括一个或多个透镜。
    优选地，所述的透镜组包括多个透镜，多个透镜之间可胶合也可不胶合。
    优选地，所述的所述的投影模块和摄像模块为一个模组，所述镜头的出射光路前设有滤光单元，所述滤光单元设置为可完全透射可见光和红外光并反射50％的红外光，所述摄像模块位于滤光单元反射红外光的出光方向。
    优选地，所述的滤光单元前设置有用以提高红外光利用率的波片，所述波片位于滤光单元的出射光路的前方，且与镜头的中心轴线垂直。
    优选地，所述的滤光单元设置为滤光组件，所述滤光组件位于镜头的出射光路前方且与镜头出光面成45度；所述波片设置为第一波片，所述第一波片位于滤光组件的出射光路前方，与镜头的中心轴线垂直。
    优选地，所述的滤光单元设置为滤光棱镜组件，所述滤光棱镜组件包括两个直角棱镜粘合而成，所述滤光棱镜组件的粘合面位于镜头的出射光路前方且与镜头出光面成45度；其中，所述所述波片设置为第二波片，所述第二波片位于滤光棱镜组件的出射光路的前方，胶合在滤光棱镜组件靠近投影区域的一面，与镜头的中心轴线垂直。
    本发明的有益效果为：通过投影模块和摄像模块来实现交互投影，其中通过滤光元件将投影模块和摄像模块集成一个模组，从而简化的系统，通过合光系统的光路整合作用，将LED光源和红外光源进行合光，以实现不外设红外装置，来实现人机交互操作，免去了反复校正红外光的操作。
    附图说明
    图1是本发明实施例一红外投影系统结构示意图；
    图2是本发明实施例一合光单元第一种方案结构示意图；
    图3是本发明实施例一合光单元第二种方案结构示意图；
PCT/CN2017/085730 2017-03-30 2017-05-24 一种红外投影系统 Ceased WO2018176613A1 (zh)

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CN207601492U (zh) * 2017-12-29 2018-07-10 广景视睿科技（深圳）有限公司 一种基于混合光源的互动投影装置
CN108762483B (zh) * 2018-04-16 2021-02-09 广景视睿科技（深圳）有限公司 一种互动投影仪及互动投影方法
CN110618578B (zh) * 2018-06-19 2022-05-06 广景视睿科技（深圳）有限公司 一种投影仪及投影方法
CN110753212A (zh) * 2018-07-23 2020-02-04 中国科学院苏州纳米技术与纳米仿生研究所 一种互动激光投影系统
US11057595B2 (en) * 2019-02-08 2021-07-06 Texas Instruments Incorporated Projection on multiple planes using a single projection unit
CN113671782B (zh) * 2021-10-21 2022-02-15 成都极米科技股份有限公司 一种投影设备
CN115996283B (zh) * 2023-03-23 2023-06-13 北京深光科技有限公司 无需外接激光器及摄像模组的可触控交互的投影光机

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