WO2007070497A2 - Segmented display projector mount - Google Patents

Segmented display projector mount Download PDF

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Publication number
WO2007070497A2
WO2007070497A2 PCT/US2006/047338 US2006047338W WO2007070497A2 WO 2007070497 A2 WO2007070497 A2 WO 2007070497A2 US 2006047338 W US2006047338 W US 2006047338W WO 2007070497 A2 WO2007070497 A2 WO 2007070497A2
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WO
WIPO (PCT)
Prior art keywords
projector
axis
along
members
pair
Prior art date
Application number
PCT/US2006/047338
Other languages
French (fr)
Other versions
WO2007070497A3 (en
Inventor
Matthew Robert Lamb
Mark Alan Schultz
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of WO2007070497A2 publication Critical patent/WO2007070497A2/en
Publication of WO2007070497A3 publication Critical patent/WO2007070497A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems
    • 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
    • G03B21/10—Projectors with built-in or built-on screen
    • 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
    • G03B21/145—Housing details, e.g. position adjustments thereof
    • 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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • 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
    • G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
    • G03B37/04—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view

Definitions

  • the invention relates generally to a multi-projector display and, in particular a projector mount for a multi-projector display.
  • Segmented display systems generally employ multiple projection devices and multiple display devices.
  • the display devices are arranged in an array (N x N), such as, for example, a 2 x 2 array, as shown in FIG. 1.
  • N x N an array
  • Another example is a 1 x 4 array, as shown in FIG. 2.
  • Each projection device projects a portion of an image on a corresponding one of the display devices, as shown in FIG. 3 for a 1 x 4 array.
  • the multiple projectors may be for example a DLP (Digital Light Processing) or other type of digital video projector.
  • DLP Digital Light Processing
  • the present invention uses individual mechanical structures on which each projector of a multi-projector seamed display system is mounted to adjust individual projectors with respect to corresponding individual displays of a segmented display system.
  • the mechanical is adjustable along five (5) axes to align the position of the projector to the corresponding display of the segmented display system.
  • FIG. 1 illustrates an example of a segmented display system, in accordance with the present invention
  • FIG. 2 illustrates another example of a segmented display system, in accordance with the present invention
  • FIG. 3 illustrates that each projection device projects a portion of an image on a corresponding one of the display devices, as shown in FIG. 2 for a 1 x 4 segmented display system;
  • FIG. 4 shows a perspective view of a mechanical structure to which a projector is mounted, in accordance with the present invention
  • FIG. 5 depicts a top view of the mechanical structure shown in FIG. 4;
  • FIG. 6 depicts a side view of the mechanical structure shown in FIG. 4.
  • FIG. 7 depicts four projectors positioned side-by-side with each attached to individual second members and being positioned along a pair of first members.
  • the present invention uses individual mechanical structures on which each projector of a multi-projector segmented display system is mounted to adjust individual projectors with respect to corresponding individual displays of a seamed display system.
  • the mechanical structure is adjustable along five (5) axes to align the position of the projector to the corresponding display of the segmented display system.
  • FIGS. 4-6 includes a mechanical structure 10 that is used to hold a digital light processing (DLP) or other type of digital video projector 15 in proper position and alignment for use in a multiple projector segmented display system (not shown).
  • DLP digital light processing
  • FIGS. 4-6 only one mechanical structure 10 having a projector 15 coupled thereto is shown in the figures. However, for example, a 2 x 2 seamed display system would include four (4) such mechanical structures 10, each having a projector 15 coupled thereto to be aligned with a corresponding display screen (not shown).
  • the projector 15 may be coupled to the mechanical structure 15 using for example a plate 18.
  • the plate 18 may be formed of a metal such as, for example, aluminum.
  • the projector 15 may be attached directly to the mechanical structure 10.
  • the mechanical structure 10 holds the projector 15 in the desired position with respect to its corresponding display screen (not shown).
  • the mechanical structure 10 can be used to adjust the position of the projector 15 with respect to its corresponding display screen (not shown).
  • the mechanical structure 10 provides 5 axes (degrees) of adjustment to the projector 15, which is used to align each of the multiple projectors to its corresponding screen so as to form one complete image on the segmented display.
  • two axes of adjustment are provided by moving the projector in either of the X- direction 25 or the Y-direction 20.
  • Three axes of adjustment are provided by rotating the projector along either of the x-axis 30, the y-axis 35 or the z-axis 40.
  • a sixth axis is provided in the focus of the lens of the projector, however such adjustment does not need a separate mechanical structure.
  • the mechanical structure 10 includes a pair of first members 50 along which the projector 15 is movable in the x-direction 25. Attached between the pair of first members 50 is a second member 55 along which the projector 15 is moveable in the y-direction 20. Each projector 15 is positioned above the pair of first members 50 and the second member 55.
  • four projectors 15 may be positioned side-by-side with each attached to individual second members 55 and being positioned along a pair of first members 50.
  • Other arrangements for positioning multiple projectors 15 with respect to the pair of first members 50 and the second members 55 may be possible and would incorporate the teachings herein.
  • the pair of first members 50 and the second members 55 may both be formed of a metal, such as, for example extruded aluminum having rails therein and bearings. Suitable extruded aluminum members may be obtained, for example, from 80/20 Inc., Columbia City, Indiana.
  • the projector 15 is moveable along the x-direction 25 by sliding the second member 55 over the pair of first members 50 along rails formed therein on linear bearings to provide smooth steady adjustments along the X direction 25.
  • the projector 15 is moveable along the y-direction 20 by sliding an adjuster 60 along rails formed in the second member 55 on linear bearings to provide smooth steady adjustments along the y direction 20.
  • the adjuster 60 positioned above the second member 55 is used to rotate the projector 15 along the x-axis, the y-axis and the z-axis.
  • the adjuster 60 includes a first cross clamp 62 that is mounted inside a pair of bases 65.
  • the first cross clamp 62 has a first rod 67 and a second rod 69 positioned therethrough.
  • the first rod 67 provides backwards and forwards radial tilting adjustment along the Y-axis 35.
  • the second rod 69 provides the side-to-side tilting adjustment along the X-axis 30.
  • a second cross clamp 70 has the second rod 69 and a third rod 71 positioned therethrough.
  • the third rod 71 is attached to a base 75 that is attached to the plate 18.
  • the third rod 71 provides tilting adjustment along the Z- axis 40.
  • the plate 18 may be machined with holes that mate to bolt holes of the projector 15 and attach the projector 15 to the adjuster 60.
  • the first rod 67, the second rod 69 and the third rod 71 may be formed of a metal, such as, for example aluminum. Suitable aluminum rods may be obtained, for example, from 80/20 Inc., Columbia City, Indiana.
  • the light from the projector 15 is pointed along the z-axis 40.
  • the projector has zoom adjustments so no additional mechanical Z-axis adjuster is needed.
  • Using the linear bearings is a unique choice for the projector mount assembly 10 and provides smooth motion with no slop that can affect projector alignment.
  • using the solid aluminum rod provides a smooth rotation and the 80/20 locking clamps permit the adjuster to be secured once it is aligned.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

Members are described upon which each projector of a multi-projector segmented display system is mounted. Each member is adjustable along five (5) axes to align the position of the projector mounted thereto to the corresponding display of the segmented display system.

Description

SEGMENTED DISPLAY PROJECTOR MOUNT
TECHNICAL FIELD
The invention relates generally to a multi-projector display and, in particular a projector mount for a multi-projector display.
BACKGROUND ART
Segmented display systems generally employ multiple projection devices and multiple display devices. For many segmented display systems, the display devices are arranged in an array (N x N), such as, for example, a 2 x 2 array, as shown in FIG. 1. Another example is a 1 x 4 array, as shown in FIG. 2. Each projection device projects a portion of an image on a corresponding one of the display devices, as shown in FIG. 3 for a 1 x 4 array.
The multiple projectors may be for example a DLP (Digital Light Processing) or other type of digital video projector. For such multi-projector display systems, it is difficult to hold each projector of the multi-projector system in perfect alignment for long periods of time and also allow for very fine adjustments along at least three different axes.
BRIEF SUMMARY OF THE INVENTION
The present invention uses individual mechanical structures on which each projector of a multi-projector seamed display system is mounted to adjust individual projectors with respect to corresponding individual displays of a segmented display system. The mechanical is adjustable along five (5) axes to align the position of the projector to the corresponding display of the segmented display system. BRIEF SUMMARY OF THE DRAWINGS
FIG. 1 illustrates an example of a segmented display system, in accordance with the present invention;
FIG. 2 illustrates another example of a segmented display system, in accordance with the present invention;
FIG. 3 illustrates that each projection device projects a portion of an image on a corresponding one of the display devices, as shown in FIG. 2 for a 1 x 4 segmented display system;
FIG. 4 shows a perspective view of a mechanical structure to which a projector is mounted, in accordance with the present invention;
FIG. 5 depicts a top view of the mechanical structure shown in FIG. 4;
FIG. 6 depicts a side view of the mechanical structure shown in FIG. 4; and
FIG. 7 depicts four projectors positioned side-by-side with each attached to individual second members and being positioned along a pair of first members.
DETAILED DESCRIPTION
The present invention uses individual mechanical structures on which each projector of a multi-projector segmented display system is mounted to adjust individual projectors with respect to corresponding individual displays of a seamed display system. The mechanical structure is adjustable along five (5) axes to align the position of the projector to the corresponding display of the segmented display system.
The present invention, shown in FIGS. 4-6 includes a mechanical structure 10 that is used to hold a digital light processing (DLP) or other type of digital video projector 15 in proper position and alignment for use in a multiple projector segmented display system (not shown). In the following discussion only one mechanical structure 10 having a projector 15 coupled thereto is shown in the figures. However, for example, a 2 x 2 seamed display system would include four (4) such mechanical structures 10, each having a projector 15 coupled thereto to be aligned with a corresponding display screen (not shown).
The projector 15 may be coupled to the mechanical structure 15 using for example a plate 18. The plate 18 may be formed of a metal such as, for example, aluminum. Alternatively, the projector 15 may be attached directly to the mechanical structure 10.
The mechanical structure 10 holds the projector 15 in the desired position with respect to its corresponding display screen (not shown). The mechanical structure 10 can be used to adjust the position of the projector 15 with respect to its corresponding display screen (not shown).
The mechanical structure 10 provides 5 axes (degrees) of adjustment to the projector 15, which is used to align each of the multiple projectors to its corresponding screen so as to form one complete image on the segmented display.
Referring to FIG. 4, two axes of adjustment are provided by moving the projector in either of the X- direction 25 or the Y-direction 20. Three axes of adjustment are provided by rotating the projector along either of the x-axis 30, the y-axis 35 or the z-axis 40. A sixth axis is provided in the focus of the lens of the projector, however such adjustment does not need a separate mechanical structure.
In one illustrative example, shown in FIGS. 4-6, the mechanical structure 10 includes a pair of first members 50 along which the projector 15 is movable in the x-direction 25. Attached between the pair of first members 50 is a second member 55 along which the projector 15 is moveable in the y-direction 20. Each projector 15 is positioned above the pair of first members 50 and the second member 55.
Referring to FIG. 7, in one illustrative example four projectors 15 may be positioned side-by-side with each attached to individual second members 55 and being positioned along a pair of first members 50. Other arrangements for positioning multiple projectors 15 with respect to the pair of first members 50 and the second members 55 may be possible and would incorporate the teachings herein.
The pair of first members 50 and the second members 55 may both be formed of a metal, such as, for example extruded aluminum having rails therein and bearings. Suitable extruded aluminum members may be obtained, for example, from 80/20 Inc., Columbia City, Indiana.
The projector 15 is moveable along the x-direction 25 by sliding the second member 55 over the pair of first members 50 along rails formed therein on linear bearings to provide smooth steady adjustments along the X direction 25. The projector 15 is moveable along the y-direction 20 by sliding an adjuster 60 along rails formed in the second member 55 on linear bearings to provide smooth steady adjustments along the y direction 20.
An adjuster 60 positioned above the second member 55 is used to rotate the projector 15 along the x-axis, the y-axis and the z-axis. The adjuster 60 includes a first cross clamp 62 that is mounted inside a pair of bases 65. The first cross clamp 62 has a first rod 67 and a second rod 69 positioned therethrough. The first rod 67 provides backwards and forwards radial tilting adjustment along the Y-axis 35. The second rod 69 provides the side-to-side tilting adjustment along the X-axis 30.
A second cross clamp 70 has the second rod 69 and a third rod 71 positioned therethrough. The third rod 71 is attached to a base 75 that is attached to the plate 18. The third rod 71 provides tilting adjustment along the Z- axis 40. The plate 18 may be machined with holes that mate to bolt holes of the projector 15 and attach the projector 15 to the adjuster 60.
The first rod 67, the second rod 69 and the third rod 71 may be formed of a metal, such as, for example aluminum. Suitable aluminum rods may be obtained, for example, from 80/20 Inc., Columbia City, Indiana.
The light from the projector 15 is pointed along the z-axis 40. The projector has zoom adjustments so no additional mechanical Z-axis adjuster is needed. Using the linear bearings is a unique choice for the projector mount assembly 10 and provides smooth motion with no slop that can affect projector alignment. Also, using the solid aluminum rod provides a smooth rotation and the 80/20 locking clamps permit the adjuster to be secured once it is aligned.
Although an exemplary projector mount assembly for a projection system which incorporates the teachings of the present invention has been shown and described in detail herein, those skilled in the art can readily devise many other varied embodiments that still incorporate these teachings.

Claims

1. A projection system, comprising: an assembly having a projector mounted thereto, wherein the assembly rotates and moves the projector along at least one of an x-axis, a y- axis and a z-axis.
2. The projection system of claim i wherein the assembly includes an adjuster for rotating the projector.
3. The projection system of claim 2 wherein the adjustor includes a plurality of rods for rotating the projector along each of the x-axis, the y-axis and the z-axis.
4. The projection system of claim 2 wherein the assembly include a pair of first members and a second member for moving the projector along each of the x-axis and the y-axis.
5. The projection system of claim 4 wherein the projector is coupled to the adjustor and the adjustor is attached to the second member which is positioned above the pair of first members.
6. A projector mount assembly for a projection system, comprising: a projector coupled to and adjustor, wherein the adjustor rotates the projector along at least one of an x-axis, a y-axis and a z-axis; and a pair of first members and a second member coupled to the projector for moving the projector along each of the x-axis and the y-axis.
7. The projector mount assembly of claim 6 wherein the adjustor includes a plurality of rods for rotating the projector along each of the x-axis, the y-axis and the z-axis.
8. The projector mount assembly of claim 6 wherein the adjustor is attached to the second member which is positioned above the pair of first members.
PCT/US2006/047338 2005-12-13 2006-12-12 Segmented display projector mount WO2007070497A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75001405P 2005-12-13 2005-12-13
US60/750,014 2005-12-13

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WO2007070497A2 true WO2007070497A2 (en) 2007-06-21
WO2007070497A3 WO2007070497A3 (en) 2007-08-02

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105508822A (en) * 2015-12-15 2016-04-20 北京中电科电子装备有限公司 Camera lens clamping device
US9429825B2 (en) 2013-09-23 2016-08-30 Revolution Display, Llc Modular projector cage and stacked frame using same
JP2021128299A (en) * 2020-02-17 2021-09-02 株式会社青井黒板製作所 Projector support apparatus
US11994252B2 (en) 2022-08-03 2024-05-28 Jacob Frost Magnetic plate wall mount

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB802213A (en) * 1955-09-30 1958-10-01 Bell Aircraft Corp Helicopter flight simulator and pilot training device
GB829996A (en) * 1955-04-11 1960-03-09 Link Aviation Inc Image perspective alteration means
US4526337A (en) * 1982-12-29 1985-07-02 General Audio-Visual Inc. Projector stacking stand
JPH08154222A (en) * 1994-11-28 1996-06-11 Hitachi Ltd Multi-vision
US20020001067A1 (en) * 2000-05-31 2002-01-03 Toshitaka Tachibana Projection type picture display apparatus
US20050128437A1 (en) * 2003-12-12 2005-06-16 International Business Machines Corporation System and method for positioning projectors in space to steer projections and afford interaction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829996A (en) * 1955-04-11 1960-03-09 Link Aviation Inc Image perspective alteration means
GB802213A (en) * 1955-09-30 1958-10-01 Bell Aircraft Corp Helicopter flight simulator and pilot training device
US4526337A (en) * 1982-12-29 1985-07-02 General Audio-Visual Inc. Projector stacking stand
JPH08154222A (en) * 1994-11-28 1996-06-11 Hitachi Ltd Multi-vision
US20020001067A1 (en) * 2000-05-31 2002-01-03 Toshitaka Tachibana Projection type picture display apparatus
US20050128437A1 (en) * 2003-12-12 2005-06-16 International Business Machines Corporation System and method for positioning projectors in space to steer projections and afford interaction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9429825B2 (en) 2013-09-23 2016-08-30 Revolution Display, Llc Modular projector cage and stacked frame using same
CN105508822A (en) * 2015-12-15 2016-04-20 北京中电科电子装备有限公司 Camera lens clamping device
CN105508822B (en) * 2015-12-15 2018-07-03 北京中电科电子装备有限公司 A kind of camera lens clamping device
JP2021128299A (en) * 2020-02-17 2021-09-02 株式会社青井黒板製作所 Projector support apparatus
US11994252B2 (en) 2022-08-03 2024-05-28 Jacob Frost Magnetic plate wall mount

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