WO2009006754A1 - Système de projection multifonction - Google Patents

Système de projection multifonction Download PDF

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Publication number
WO2009006754A1
WO2009006754A1 PCT/CN2007/002088 CN2007002088W WO2009006754A1 WO 2009006754 A1 WO2009006754 A1 WO 2009006754A1 CN 2007002088 W CN2007002088 W CN 2007002088W WO 2009006754 A1 WO2009006754 A1 WO 2009006754A1
Authority
WO
WIPO (PCT)
Prior art keywords
projection
projection system
modulated light
image
light
Prior art date
Application number
PCT/CN2007/002088
Other languages
English (en)
Chinese (zh)
Inventor
Wai Hung Marcel Man
Zhiqiang Gao
Chucheng Chang
Original Assignee
Iview Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iview Limited filed Critical Iview Limited
Priority to PCT/CN2007/002088 priority Critical patent/WO2009006754A1/fr
Publication of WO2009006754A1 publication Critical patent/WO2009006754A1/fr

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Classifications

    • 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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto

Definitions

  • the present invention relates to the field of information optoelectronic display applications, in particular to an image projection system that performs display on different surfaces and in different directions by mechanical and optoelectronic methods. Background technique
  • Projection displays have a wide range of applications, especially in the office and entertainment applications. There are also back projection systems that include large-area videowalls for advertising and control applications. The projection system can also be used for information display on cars and handheld devices. However, the optical system of many projection systems has been limited to a limited extent, and it can only adjust the focal length and some amplification functions. The projection direction and mode are single, and can only be front-projection or rear-projection. Thereby reducing the application range of the projection system. Summary of the invention
  • the present invention provides a multi-purpose projection system that allows for more variations in the projection direction and projection mode.
  • the multipurpose projection system of the present invention comprises:
  • a spatial and/or temporal light modulator operating in a reflective or transmissive mode through which light from an illumination source forms modulated light
  • the modulated light can be directed to simultaneously form an image on a plurality of surfaces or on a surface of one of them.
  • the spatial and/or temporal light modulator is a liquid crystal display or a MEMS light modulator.
  • the spatial and/or temporal light modulator operates in a reflective or transmissive mode.
  • the optical element is a beam splitter that directs modulated light to form an image on a plurality of projection surfaces.
  • the optical element is an electro-optical device that directs modulated light to form an image on a plurality of projection surfaces.
  • the method of directing the modulated light to form an image on a plurality of surfaces can be time-divisionally guided by a mechanical motion onto the image projected onto the surface.
  • the modulated light from the light modulator is guided to a projection surface to form an image, and the other projection surface is the same as the direction of the modulated light, and the projection on the projection surface can be moved by the machine 1
  • the method is implemented.
  • the modulated light from the light modulator is directed to a projection surface to form an image.
  • the projection on the projection surface can be realized by an electro-optical device.
  • the electro-optical device that directs the modulated light to form an image on a plurality of projection surfaces may be a bistable cholesteric liquid crystal display, a liquid crystal broadband reflector, or an electrochromic device.
  • the modulated light from the light modulator is directed to a projection surface to form an image.
  • the projection on the projection surface can be realized by changing the direction of the modulated light.
  • the direction of the modulated light can be changed by means of mechanical motion.
  • the direction of the modulated light can be changed by changing the position of the image projection system.
  • the change in the direction of the modulated light can be achieved by mechanically moving the optical plane in the direction of the modulated light.
  • the direction in which the light is modulated can be changed by means of optoelectronic devices.
  • the optoelectronic device that changes the modulated light may be a liquid crystal ⁇ -box addition beam splitter.
  • the system When the projected image is viewed from the same direction as the modulated light reflecting surface, the system operates in the front projection mode, and when the projected image is viewed from the opposite direction of the modulated light reflecting surface, the system operates in the rear projection mode.
  • the system can be used on portable electronic instruments to enable different display functions with a single projection system.
  • the portable electronic device can be a mobile phone.
  • the portable electronic device can be a video player.
  • the projection system can be applied to a video or data projector.
  • the projection system can be applied to a projector that displays data on a car.
  • the projection system can be used as a large-area video wall projection display system.
  • the present invention is technically provided with a projection system that allows for more variation in the projection direction and projection mode, making it easier to apply the projection system to various new applications.
  • One of the embodiments of the present invention is that a plurality of surfaces are disposed in the projection direction such that an image projected on any surface is realized by moving an optical blocking surface in front of the projection surface. This movement allows the light to be reflected or passed through mechanical movement or optical switching.
  • Each plane may be part of a projection system or a plane outside of any system that has suitable optical properties to provide sufficient contrast for projection. 'Each plane can have the nature of a rear projection or a front projection.
  • Another embodiment of the present invention is that a plurality of planes are placed in different projection directions so as to pass The optics are used to project in any direction or directions, whether the optics are mechanically or optically switched to direct modulated light from the projection system.
  • Figure 1 shows an image projection system operating in a transmissive mode in which the light source is on the other side of the modulated light and the modulator operates by absorption and transmission.
  • Figure 2 shows an image projection system operating in a reflective mode in which the light source is reflected by the beam splitter and the direct modulator is activated by absorption and reflection.
  • Figure 3 shows the configuration of an image projection system in which the projection plane is in the same direction of the modulated light.
  • the projection surface is projected by mechanical motion to achieve projection on different planes.
  • Figure 4 shows the configuration of an image projection system in which the projection plane is in the same direction of the modulated light.
  • the projection surface is projected on different planes by means of switches of the electro-optical device.
  • Figure 5 shows an image projection system with two relative 90 degree projection surface configurations.
  • An optical device is placed in front of the projection system to direct the modulated light to the proper direction by mechanical motion.
  • Figure 6 shows an image projection system with two relative 90 degree projection surface configurations.
  • An electro-optical device is placed in front of the projection system and is converted by an electro-optical switch to direct the modulated light to the proper direction.
  • Figure 7 shows a portable telephone display application in which a fixed surface is used as a rear projection device and a free surface having suitable optical properties is configured as an image projection system external to the device.
  • Figure 8 shows an automotive dashboard as a fixed surface for rear projection, and a car windshield in the other direction as an image projection system for the front projected surface.
  • Figures 1 and 2 are block diagrams that briefly describe the configuration of the projection system.
  • the illustrations in Figures 1 and 2 are merely illustrative of the invention and are not to be construed as limiting the scope of the claims. Other changes, changes, and evolutions can be included in the diagram.
  • the light modulator 2 is a transmissive device such as a liquid crystal display operating in a transmissive mode.
  • Two polarizers are attached to both sides of the display.
  • the projection light 3 emitted from the illumination source 1 passes through the first polarizer and becomes polarized light, and then passes through the liquid crystal display controlled by the electric field switch, the light can be changed or not changed, and then the second polarizer is Absorb or penetrate Achieve the role of light modulation.
  • the transmitted light of the liquid crystal display can be projected to the optical amplification system.
  • the light modulator 1 is a reflective device such as a liquid crystal display or MEMS operating in a reflective mode. Additional optical components, such as beam splitter 6 (i.e., beam splitter), are used to direct illumination to the panel.
  • beam splitter 6 i.e., beam splitter
  • light modulation uses a method of polarizing light
  • MEMS mechanically changing the direction of light reflection.
  • the image can be projected onto a projection plane 5 that is a suitable distance from the projection system.
  • the series of projection planes 5 are arranged on the same side of the projection direction, one or more of which may be part of the projection system 9. In addition, some of the projection planes are not part of the projection system.
  • Each of the planes may be opaque and have suitable optical properties to reflect the modulated light or this plane may be used to construct a system for rear projection images.
  • These planes can be mechanically moved to image on the target plane.
  • One configuration of this system includes a mechanically moveable plane in the system into which images can be projected. When the mechanical light does not affect the modulated light, the light can be projected onto another plane.
  • a series of projection planes 5 are placed on the same side of the projection direction, one or more of which may be part of the projection system 9. In addition, some of the projection planes are not part of the projection system.
  • Each plane may be a system that is controlled by electro-optic device 7 to change optical properties to reflect modulated light or which may be used to form a rear projection image. These planes can be electrically switched to control the reflected modulated light or allow the modulated light to pass through to image on the target plane.
  • One configuration of this system is to include an electro-optic controllable plane in the system into which an image can be projected. When the electro-optical switch does not affect the modulated light, the light can be projected onto another plane that is not part of the system.
  • the two projection planes 5 are placed at 90 degrees.
  • the modulated light from the projection system 9 can be projected onto the plane 5A.
  • the projection is from the projection.
  • the modulated light from system 9 can be projected onto plane 5B.
  • plane 5A is part of the system and the larger plane 5B is not part of the system.
  • the image can be projected onto the flat screen 5A of the system, or when larger images are needed, the image can be projected through the optical element 8 to a larger plane 5B that is not part of the system.
  • the two projection planes 5 are placed opposite each other at 90 degrees.
  • the modulated light from the projection system can be projected onto the plane 5A, when the optical element 8 is controlled to reflect at 90 degrees in the beam splitter 6.
  • the light can be projected onto the plane 5B.
  • plane 5A is part of the system and larger plane 5B is not part of the system.
  • the image can be projected onto the flat screen A of the system, or when larger images are needed, the image through the optical element 8 can be projected onto a larger plane 5B that is not part of the system.
  • projection to the desired plane is achieved by mechanical control.
  • the projection to the desired plane is achieved by electro-optic control.
  • the configuration of the system in Figures 3 through 6 is very effective in extending the application of projection systems, especially information projection systems, to certain instruments.
  • the application of the system on portable instruments With the development of wireless and storage technologies, portable instruments such as PDAs and mobile phones are designed to have multimedia playback capabilities, requiring a high resolution display and a large screen. However, the screen size of the instrument is limited by the size of the portable instrument.
  • the projector can project images to a screen that is part of a portable instrument to display information, and when playing as a multimedia requires a larger screen, the projection system can be adjusted to Figures 3 through 6 Set in to project to the plane outside the instrument.
  • Figure 7 shows the integrated system of the instrument shown in Figure 5.
  • the projection system can project an image on the dashboard of the car.
  • the projection system can be converted into a projected image on the windshield of the car.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Projection Apparatus (AREA)

Abstract

L'invention concerne un système de projection multifonction (9) qui comprend une source lumineuse d'éclairage (1), un modulateur spatial et/ou temporel optique (2) qui est mis en fonctionnement en mode réflectif ou transmissif, le faisceau de lumière projeté depuis la source lumineuse d'éclairage (1) peut être une lumière modulée formée par l'intermédiaire du modulateur optique (2) ; une pluralité de plans de projection (5) qui amènent la lumière modulée à former une image ; un élément optique relatif (6, 7, 8) qui guide la lumière modulée. Le système de projection peut former une image sur le plan de projection avec une position différente.
PCT/CN2007/002088 2007-07-06 2007-07-06 Système de projection multifonction WO2009006754A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/002088 WO2009006754A1 (fr) 2007-07-06 2007-07-06 Système de projection multifonction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/002088 WO2009006754A1 (fr) 2007-07-06 2007-07-06 Système de projection multifonction

Publications (1)

Publication Number Publication Date
WO2009006754A1 true WO2009006754A1 (fr) 2009-01-15

Family

ID=40228146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/002088 WO2009006754A1 (fr) 2007-07-06 2007-07-06 Système de projection multifonction

Country Status (1)

Country Link
WO (1) WO2009006754A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109343070A (zh) * 2018-11-21 2019-02-15 深圳奥比中光科技有限公司 时间飞行深度相机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1356841A (zh) * 2000-11-29 2002-07-03 齐伯瑙特有限公司 电话和个人数字助理的数字投影系统
US20060234784A1 (en) * 2004-12-21 2006-10-19 Silviu Reinhorn Collapsible portable display
CN1896861A (zh) * 2005-07-11 2007-01-17 崔海龙 双图像投影系统
WO2007040322A1 (fr) * 2005-10-03 2007-04-12 Gyungyun Kim Dispositif électronique portable à fonction de projection de faisceau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1356841A (zh) * 2000-11-29 2002-07-03 齐伯瑙特有限公司 电话和个人数字助理的数字投影系统
US20060234784A1 (en) * 2004-12-21 2006-10-19 Silviu Reinhorn Collapsible portable display
CN1896861A (zh) * 2005-07-11 2007-01-17 崔海龙 双图像投影系统
WO2007040322A1 (fr) * 2005-10-03 2007-04-12 Gyungyun Kim Dispositif électronique portable à fonction de projection de faisceau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109343070A (zh) * 2018-11-21 2019-02-15 深圳奥比中光科技有限公司 时间飞行深度相机

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