US20170160630A1 - Tensioned projection screen apparatus - Google Patents
Tensioned projection screen apparatus Download PDFInfo
- Publication number
- US20170160630A1 US20170160630A1 US15/209,075 US201615209075A US2017160630A1 US 20170160630 A1 US20170160630 A1 US 20170160630A1 US 201615209075 A US201615209075 A US 201615209075A US 2017160630 A1 US2017160630 A1 US 2017160630A1
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- Prior art keywords
- projection screen
- coupler
- rib
- frame member
- frame
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- Abandoned
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Classifications
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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
- G03B21/54—Accessories
- G03B21/56—Projection screens
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/565—Screens allowing free passage of sound
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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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present invention relates to projection screens. More particularly, the present invention relates to tensioned projection screens.
- a projection screen apparatus for use with a projector that is configured to project an image to be watched by a viewer.
- the projection screen apparatus includes a projection screen having a viewing surface configured to display the image to the viewer,
- the projection screen includes a plurality of truncated corners.
- the projection screen apparatus further includes a frame supporting the projection screen and including a plurality of frame members.
- the projection screen apparatus further includes a coupler coupling the projection screen to the frame.
- a projection screen apparatus for use with a projector that is configured to project an image to be watched by a viewer.
- the projection screen apparatus includes a projection screen having a viewing surface configured to display the image to the viewer.
- the projection screen includes a first perimeter edge, a second perimeter edge perpendicular to the first perimeter edge, and a corner perimeter edge angled between the first and second perimeter edges.
- the projection screen apparatus further includes a frame supporting the projection screen and including a plurality of frame members.
- the projection screen apparatus further includes a coupler coupling the projection screen to the frame.
- a projection screen apparatus for use with a projector that is configured to project an image to be watched by a viewer.
- the projection screen apparatus includes a projection screen having a viewing surface configured to display the image to the viewer.
- the projection screen defines a plurality of edges and has a length and a width. First and second edges of the projection screen have lengths less than the length of the projection screen. Third and fourth edges of the projection screen have lengths less than the width of the projection screen.
- the projection screen apparatus further includes a frame supporting the projection screen and including a plurality of frame members.
- the projection screen apparatus further includes a coupler coupling the projection screen to the frame.
- FIG. 1 is a perspective view of a room showing a projector projection an image on a projection screen apparatus according to the present disclosure
- FIG. 2 is a perspective view of four corners of the projection screen apparatus of FIG. 1 ;
- FIG. 3 an exploded perspective view of a frame of the projection screen apparatus of FIG. 1 ;
- FIG. 4 is another exploded perspective view of the frame of the projection screen apparatus of FIG. 1 ;
- FIG. 5 is an exploded perspective view of a projection screen and four couplers configures to couple the screen to the frame;
- FIG. 6 is a perspective view of a portion of the projection screen apparatus showing two extended frame members coupled to a corner member and the projection screen aligned to be coupled to the frame and corner members by two screen coupler;
- FIG. 7 is a cross-sectional view taken along line 7 - 7 of FIG. 1 showing the coupler in a first location relative to the frame member;
- FIG. 8 is a cross-sectional view taken along line 8 - 8 of FIG. 1 showing the coupler in a second location relative to the frame member;
- FIG. 9 is a view similar to FIG. 8 showing the coupler being moved to a third position when a user pushes on the coupler with a tool (in phantom);
- FIG. 10 is a cross-sectional view of the frame member and coupler showing the coupler positioned within a channel of the frame member for shipping.
- a projection screen apparatus 10 is provided to display images projected by a projector 12 .
- projection screen apparatus 10 is mounted to a wall 14 of a structure, such as an entertainment room of a residence or conference room of a business.
- projector 12 is positioned on the audience side of projection screen apparatus 10 to reflect back the images projected by projector 12 to an audience.
- projector 12 is positioned for a rear projection application on the back side of projection screen apparatus 10 so that images projected by projector 12 are displayed through projection screen apparatus 10 to the audience.
- speakers are positioned behind the projection screen apparatus 10 so that the sound is transmitted through projection screen apparatus 10 .
- projection screen apparatus 10 includes a perimeter frame 16 and a projection screen 18 tensioned on frame 16 .
- projection screen apparatus 10 further includes a plurality of couplers 20 that couple projection screen 18 to frame 16 as shown in FIG. 7 .
- each coupler 20 can be positioned at one of a number of locations on frame 16 . Depending on the location at which coupler 20 is positioned on frame 16 , the level of tension in screen 18 is greater or lesser.
- Frame 16 includes four corner members 22 and four extended frame members 24 extending between corner members 22 and forming a junction 88 , as shown in FIG. 6 .
- Junction 88 includes a pair of tubular channels 26 , 28 and a pair of posts 30 , 32 .
- Each frame member 24 is made of extruded aluminum and includes the pair of channels 26 , 28 , The lengths of frame members 24 are dependent upon the size of screen 18 .
- Each corner member 22 is made of ABS plastic and includes the pair of posts 30 , 32 sized to fit within respective channels 26 , 28 of respective channels 26 , 28 of respective frame members 24 .
- posts 30 , 32 are slid into respective channels 26 , 28 of each respective frame member 24 to define a rectangular perimeter. Additional disclosure of a suitable projection screen apparatus is provided in U.S. Provisional Patent Application No. 60/840,583, entitled “Tensioned Projection Screen,” filed Aug. 28, 2006, to Steven E. Enochs, the disclosure of which is herein incorporated by reference in its entirety.
- Each frame member 24 further includes a fastener-receiving channel 34 sized to receive a fastener 36 , such as a screw.
- Each corner member 22 includes a pair of fastener-receiving apertures 38 also sized to receive fastener 36 .
- brace 40 is provided that extends between opposite frame members 24 .
- Each frame member 24 includes an open channel 42 and opposite ends of brace 40 are positioned in channels 42 .
- brace 40 is under slight compression.
- fasteners are provided to secure brace 40 on frame members 24 .
- couplers 20 are coupled to projection screen 18 .
- edges 44 of screen 18 are folded over and sewn as shown in FIG. 5 to define permanent loops 46 in screen 18 .
- Screen 18 may be made of a number of materials suitable for projection screen applications. Preferably, screen 18 has a reflectivity gain from about 0.4 to about 2.5. Front projections screens are preferably white or light gray in appearance. Rear projection screens are preferably light gray in color and translucent to permit the projected image to transmit through the screen and be displayed to the audience. Some of the screens are acoustically transparent, like speaker cover fabric, to permit sound to be transmitted through the screen.
- the screen includes a woven fiberglass backing with a vinyl reflective surface laminated to the fiberglass (gain of approximately 1.0).
- microscopic glass beads are provided on the viewing surface (gain from about 0.5 to about 2.5 depending on the viewing angle).
- the screen is made of a white (gain of about 1.0 or from about 0.4 to about 2.2 depending on the viewing angle) or light gray (gain of about 0.6 to 0.9 depending on the viewing angle) vinyl material without a backing.
- Other suitable projection screens known to those of ordinary skill in the art may also be provided.
- the screen is substantially blank so that it is substantially free of printing or other markings that noticeably detract from the images projected on the screen.
- the substantially blank screen is provided with black borders that frame the screen for “wide screen” or other projection formats.
- Couplers 20 are made of extruded, rigid PVC and include a first end 48 having an interactive member 50 and a second end 52 having an open channel 54 sized to receive loops 46 of screen 18 .
- each loop 46 is positioned to extend down an open channel 54 of a respective coupler 20 .
- a retention rod 56 that is slightly longer than coupler 20 is slid through an open end of each loop 46 . This prevents the withdrawal of the respective loop 46 from the respective screen coupler 20 to couple each screen coupler 20 to an edge 44 of screen 18 .
- retention rods 56 are hollow and made of HDPE plastic. Because loops 46 are permanent, the position of couplers 20 relative to screen 18 is fixed by the manufacturer and not dependent upon the skill of the installer.
- Each interactive member 50 of couplers 20 includes a rib 58 that defines an undercut groove 60 with a body 62 of coupler 20 .
- Each frame member 24 includes three spaced-apart interactive members 64 , 66 , 68 including ribs 70 , 72 , 74 that define undercut grooves 76 , 78 , 80 .
- Interactive member 50 of screen coupler 20 mates with one of interactive members 64 , 66 , 68 to couple coupler 20 to frame member 24 .
- Each corner member 22 includes two sets of corresponding interactive members 82 , 84 , 86 that align with respective interactive members 64 , 66 , 68 of adjacent frame members 24 to define continuous interactive members and grooves that extend across junctions 88 defined between respective corner and frame members 22 , 24 .
- Each respective coupler 20 , loop 46 , and retention rod 56 is longer than the distance between each exposed end of frame member 24 so that each coupler 20 , loop 46 , and rod 56 extends over the respective junction 88 between corners 22 and frame members 24 when couplers 20 are coupled to frame 16 .
- continuous coupling is provided along the entire length of frame members 24 and extends over to corners 22 .
- projection screen apparatus 10 includes a pair of wall couplers 90 that are coupled to wall 14 and frame 16 to support perimeter frame 16 on wall 14 .
- Wall coupler 90 is made of extruded aluminum and includes a first flange 92 including a plurality of fastener-receiving apertures 94 and a second flange 96 .
- one or more wall couplers 90 are coupled to wall 14 with second flange 96 extending upwardly.
- wall couplers 90 are positioned at the same level so that perimeter frame 16 will be level and then fasteners 95 , such as screws, are inserted through apertures 94 into wall 14 .
- Second flange 96 and a flange 98 of frame members 24 defines channel 40 each have a ramped edge that facilitates insertion of flange 98 over second flange 96 . As flange 98 of frame member 24 slides down flange 96 of wall coupler 90 , frame 16 is drawn closer to wall 14 .
- frame 16 can be slid right or left on wall couplers 90 to a centered position without having to remove frame 16 from wall 14 .
- frame 16 is raised up and removed from wall 14 .
- FIGS. 7 and 8 illustrate screen 18 coupled to frame 16 .
- frame member 24 has a width 100 that is 4 inches wide. These figures and the others are proportional. Thus, one of ordinary skill in the art can derive dimensions for the other components from the figures based on the known width 100 of frame 24 . According to alternative embodiments other widths are provided, such as 2, 3, or 5 inches.
- perimeter portions 110 of screen 18 When coupled to frame 16 , perimeter portions 110 of screen 18 overlap respective walk 112 of frame members 24 and corresponding walk 114 of corner members 22 .
- a substantially flat display portion 116 of screen 18 is surrounded by perimeter portions 110 and provides a display surface 118 on one side of display portion 116 on which images projected on screen 18 by projector 12 (either front or rear projection) are viewed by the audience seated in front of projection screen apparatus 10 .
- Display surface 118 defines a plane 120 that has a first audience side 122 and an opposite second side 124 . As shown in FIG. 8 , screen coupler 20 is positioned on audience side 122 of plane 120 and wall coupler 90 is positioned on opposite side 124 .
- Wall 112 includes a first corner 126 on its inner edge that causes screen 18 to turn or bend and divides screen 18 into perimeter and display portions 110 , 116 as shown in FIG. 8 .
- Wall 112 also includes a second bend 128 that turns and divides perimeter portion 110 of screen 18 into first and second segments 130 , 132 . Corner 126 and bend 128 assist in suppressing puckering or creasing of screen caused by coupler 20 so that most, if not all, puckering or creasing is removed from screen 18 before reaching display portion 116 so that little or no distortion is caused in display surface 118 .
- Second segment 132 of perimeter portion 110 defines a plane 134 having a first side 136 and a second side 138 .
- interactive member 50 of coupler 20 is positioned on first side 136 along with interactive members 64 , 66 , 68 of frame member 24 and interactive members 82 , 84 , 86 of corner members 22 .
- frame 16 includes a front side 140 facing the audience and an opposite back side 142 .
- Front side 140 is preferably painted or otherwise colored black and includes a face 144 , an outer wall 146 , and an inner side wall 148 .
- display portion 116 of screen 18 defines an angle 150 of 91° to suppress images from “washing” onto face 144 .
- face 144 and inner side wall 148 have a relatively large radius of 0.25 inches therebetween that further suppresses washing.
- frame 16 is first assembled as described above.
- Screen 18 and screen couplers 20 are coupled together as described above either before or after frame 16 is assembled.
- Screen 18 is then coupled to frame 16 with screen couplers 20 .
- a tool 152 such as a plastic putty knife, is provided to assist in coupling couplers 20 to frame 16 .
- Each coupler 20 includes a rib 154 positioned opposite rib 58 that is configured to receive a front edge 156 of tool 152 .
- screen coupler 20 is positioned adjacent to wall 112 of the respective frame member 24 .
- rib 58 is forced along wall 112 until it snaps into one of grooves 76 , 78 , 80 .
- tool 152 is slid along the length of coupler 20 forcing the entire length of rib 58 into groove 76 .
- screen 18 is sized so that when ribs 58 of couplers 20 are positioned in first grooves 76 , screen 18 is properly tensioned so that display portion 116 of screen 18 is properly tensioned and substantially flat.
- one or more of ribs 58 of couplers 20 may need to be moved further outward to second or third grooves 78 , 80 to obtain the proper tension.
- screen 18 may stretch and develop a sag that noticeably distorts the quality of the images displayed on screen 18 .
- one or more couplers 20 is moved further out to the next respective groove 78 , 80 until the sag in screen 18 is removed. Because couplers 20 an inaccessible from the front of projection screen apparatus 10 , it must first be removed from wall 14 before the adjustment can be made.
- channel 26 is sized to receive coupler 26 and rod 56 . Before shipping, coupler 26 and rod 56 are placed in channel 26 . This help avoids damage to coupler 26 and rod 56 during shipping and also reduces the shipping space required.
- instructions for the assembly, installation, and/or use of projection screen apparatus 10 are provided with projection screen apparatus 10 or otherwise communicated to permit a person or machine to assemble, install and/or use projection screen apparatus 10 .
- Such instructions may include a description of any or all portions of projection screen apparatus 10 and/or any or all of the above-described assembly, installation, and use of projection screen apparatus 10 or components of projection screen apparatus 10 .
- the instructions may be provided on separate papers and/or on the packaging in which projection screen apparatus 10 is sold or shipped. These instructions may also be provided over the Internet or other communication system.
- the instructions may be embodied as text, pictures, audio, video, or any other medium or method of communicating instructions known to those of ordinary skill in the art.
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Abstract
A projection screen apparatus is disclosed for displaying an image projected by a projector. The projection screen apparatus includes a frame and a screen. The frame includes a plurality of frame members and corner members.
Description
- This application is a continuation of U.S. patent application Ser. No. 14/463,097, filed Aug. 19, 2014, which is a continuation of U.S. patent application Ser. No. 13/739,339, filed Jan. 11, 2013, now U.S. Pat. No. 8,810,909, which is a continuation of U.S. patent application Ser. No. 12/897,484, filed Oct. 4, 2010, now U.S. Pat. No. 8,358,464, which is a continuation of U.S. patent application Ser. No. 12/115,351, filed May 5, 2008, now U.S. Pat. No, 7,808,702, which is a continuation of U.S. patent application Ser. No. 11/526,951, filed Sep. 26, 2006, now U.S. Pat. No. 7,369,310, which is a continuation-in-part of U.S. patent application Ser. No. 10/930,255, filed Aug. 31, 2004, now U.S. Pat. No. 7,113,332, which is a continuation of U.S. patent application Ser. No. 10/327,421, filed Dec. 20, 2002, now U.S. Pat. No. 6,785,047, the disclosures of which are expressly incorporated by reference herein.
- The present invention relates to projection screens. More particularly, the present invention relates to tensioned projection screens.
- According to one aspect of an exemplary embodiment of the present disclosure, a projection screen apparatus for use with a projector is provided that is configured to project an image to be watched by a viewer. The projection screen apparatus includes a projection screen having a viewing surface configured to display the image to the viewer, The projection screen includes a plurality of truncated corners. The projection screen apparatus further includes a frame supporting the projection screen and including a plurality of frame members. The projection screen apparatus further includes a coupler coupling the projection screen to the frame.
- According to another aspect of an exemplary embodiment of the present disclosure, a projection screen apparatus for use with a projector is provided that is configured to project an image to be watched by a viewer. The projection screen apparatus includes a projection screen having a viewing surface configured to display the image to the viewer. The projection screen includes a first perimeter edge, a second perimeter edge perpendicular to the first perimeter edge, and a corner perimeter edge angled between the first and second perimeter edges. The projection screen apparatus further includes a frame supporting the projection screen and including a plurality of frame members. The projection screen apparatus further includes a coupler coupling the projection screen to the frame.
- According to yet another aspect of an exemplary embodiment of the present disclosure, a projection screen apparatus for use with a projector is provided that is configured to project an image to be watched by a viewer. The projection screen apparatus includes a projection screen having a viewing surface configured to display the image to the viewer. The projection screen defines a plurality of edges and has a length and a width. First and second edges of the projection screen have lengths less than the length of the projection screen. Third and fourth edges of the projection screen have lengths less than the width of the projection screen. The projection screen apparatus further includes a frame supporting the projection screen and including a plurality of frame members. The projection screen apparatus further includes a coupler coupling the projection screen to the frame.
- Additional features of the present invention will become apparent to those skilled in the art upon consideration of the following detailed description of an illustrated embodiment exemplifying the best mode of carrying out the invention as presently perceived.
- A detailed description particularly refers to the accompanying figures in which:
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FIG. 1 is a perspective view of a room showing a projector projection an image on a projection screen apparatus according to the present disclosure; -
FIG. 2 is a perspective view of four corners of the projection screen apparatus ofFIG. 1 ; -
FIG. 3 an exploded perspective view of a frame of the projection screen apparatus ofFIG. 1 ; -
FIG. 4 is another exploded perspective view of the frame of the projection screen apparatus ofFIG. 1 ; -
FIG. 5 is an exploded perspective view of a projection screen and four couplers configures to couple the screen to the frame; -
FIG. 6 is a perspective view of a portion of the projection screen apparatus showing two extended frame members coupled to a corner member and the projection screen aligned to be coupled to the frame and corner members by two screen coupler; -
FIG. 7 is a cross-sectional view taken along line 7-7 ofFIG. 1 showing the coupler in a first location relative to the frame member; -
FIG. 8 is a cross-sectional view taken along line 8-8 ofFIG. 1 showing the coupler in a second location relative to the frame member; -
FIG. 9 is a view similar toFIG. 8 showing the coupler being moved to a third position when a user pushes on the coupler with a tool (in phantom); and -
FIG. 10 is a cross-sectional view of the frame member and coupler showing the coupler positioned within a channel of the frame member for shipping. - According to the present disclosure, a projection screen apparatus 10 is provided to display images projected by a
projector 12. Typically, projection screen apparatus 10 is mounted to a wall 14 of a structure, such as an entertainment room of a residence or conference room of a business. As shown inFIG. 1 ,projector 12 is positioned on the audience side of projection screen apparatus 10 to reflect back the images projected byprojector 12 to an audience. According to alternative installations,projector 12 is positioned for a rear projection application on the back side of projection screen apparatus 10 so that images projected byprojector 12 are displayed through projection screen apparatus 10 to the audience. In some installations, speakers (not shown) are positioned behind the projection screen apparatus 10 so that the sound is transmitted through projection screen apparatus 10. - As shown in
FIG. 2 , projection screen apparatus 10 includes aperimeter frame 16 and aprojection screen 18 tensioned onframe 16. As shown inFIG. 5 , projection screen apparatus 10 further includes a plurality ofcouplers 20 thatcouple projection screen 18 toframe 16 as shown inFIG. 7 . According to the preferred embodiment, eachcoupler 20 can be positioned at one of a number of locations onframe 16. Depending on the location at whichcoupler 20 is positioned onframe 16, the level of tension inscreen 18 is greater or lesser. -
Frame 16 includes fourcorner members 22 and four extendedframe members 24 extending betweencorner members 22 and forming ajunction 88, as shown inFIG. 6 .Junction 88 includes a pair oftubular channels posts frame member 24 is made of extruded aluminum and includes the pair ofchannels frame members 24 are dependent upon the size ofscreen 18. - Each
corner member 22 is made of ABS plastic and includes the pair ofposts respective channels respective channels respective frame members 24. During assembly,posts respective channels respective frame member 24 to define a rectangular perimeter. Additional disclosure of a suitable projection screen apparatus is provided in U.S. Provisional Patent Application No. 60/840,583, entitled “Tensioned Projection Screen,” filed Aug. 28, 2006, to Steven E. Enochs, the disclosure of which is herein incorporated by reference in its entirety. - Each
frame member 24 further includes a fastener-receivingchannel 34 sized to receive afastener 36, such as a screw. Eachcorner member 22 includes a pair of fastener-receivingapertures 38 also sized to receivefastener 36. Afterposts channels fastener 36 are inserted intoapertures 38 and screwed intochannels 34 to securelycouple corner members 22 torespective frame members 24. - Depending upon the length of
frame members 24, analuminum brace 40 is provided that extends betweenopposite frame members 24. Eachframe member 24 includes anopen channel 42 and opposite ends ofbrace 40 are positioned inchannels 42. Preferably, brace 40 is under slight compression. According to alternative embodiments, fasteners are provided to securebrace 40 onframe members 24. - Before or after
frame 16 is assembled,couplers 20 are coupled toprojection screen 18. Preferably before shipment of projection screen apparatus 10, edges 44 ofscreen 18 are folded over and sewn as shown inFIG. 5 to definepermanent loops 46 inscreen 18. -
Screen 18 may be made of a number of materials suitable for projection screen applications. Preferably,screen 18 has a reflectivity gain from about 0.4 to about 2.5. Front projections screens are preferably white or light gray in appearance. Rear projection screens are preferably light gray in color and translucent to permit the projected image to transmit through the screen and be displayed to the audience. Some of the screens are acoustically transparent, like speaker cover fabric, to permit sound to be transmitted through the screen. - According to one embodiment, the screen includes a woven fiberglass backing with a vinyl reflective surface laminated to the fiberglass (gain of approximately 1.0). According to one embodiment, microscopic glass beads are provided on the viewing surface (gain from about 0.5 to about 2.5 depending on the viewing angle). According to another embodiment, the screen is made of a white (gain of about 1.0 or from about 0.4 to about 2.2 depending on the viewing angle) or light gray (gain of about 0.6 to 0.9 depending on the viewing angle) vinyl material without a backing. Other suitable projection screens known to those of ordinary skill in the art may also be provided. Preferably the screen is substantially blank so that it is substantially free of printing or other markings that noticeably detract from the images projected on the screen. According to one embodiment, the substantially blank screen is provided with black borders that frame the screen for “wide screen” or other projection formats.
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Couplers 20 are made of extruded, rigid PVC and include afirst end 48 having aninteractive member 50 and asecond end 52 having anopen channel 54 sized to receiveloops 46 ofscreen 18. Preferably at the site of installation, eachloop 46 is positioned to extend down anopen channel 54 of arespective coupler 20. Aretention rod 56 that is slightly longer thancoupler 20 is slid through an open end of eachloop 46. This prevents the withdrawal of therespective loop 46 from therespective screen coupler 20 to couple eachscreen coupler 20 to anedge 44 ofscreen 18. Preferably,retention rods 56 are hollow and made of HDPE plastic. Becauseloops 46 are permanent, the position ofcouplers 20 relative to screen 18 is fixed by the manufacturer and not dependent upon the skill of the installer. - After
screen couplers 20 are coupled toscreen 18, they are coupled to frame 16 totension screen 18 onframe 16. Eachinteractive member 50 ofcouplers 20 includes arib 58 that defines an undercutgroove 60 with abody 62 ofcoupler 20. Eachframe member 24 includes three spaced-apartinteractive members ribs grooves Interactive member 50 ofscreen coupler 20 mates with one ofinteractive members couple coupler 20 to framemember 24. Eachcorner member 22 includes two sets of correspondinginteractive members interactive members adjacent frame members 24 to define continuous interactive members and grooves that extend acrossjunctions 88 defined between respective corner andframe members - Each
respective coupler 20,loop 46, andretention rod 56 is longer than the distance between each exposed end offrame member 24 so that eachcoupler 20,loop 46, androd 56 extends over therespective junction 88 betweencorners 22 andframe members 24 whencouplers 20 are coupled toframe 16. Thus, continuous coupling is provided along the entire length offrame members 24 and extends over tocorners 22. - After
screen 18 is coupled to frame 16,frame 16 is mounted to wall 14. As shown inFIGS. 3, 4, and 8 , projection screen apparatus 10 includes a pair ofwall couplers 90 that are coupled to wall 14 andframe 16 to supportperimeter frame 16 on wall 14.Wall coupler 90 is made of extruded aluminum and includes afirst flange 92 including a plurality of fastener-receivingapertures 94 and asecond flange 96. - During installation, one or
more wall couplers 90 are coupled to wall 14 withsecond flange 96 extending upwardly. Preferably,wall couplers 90 are positioned at the same level so thatperimeter frame 16 will be level and thenfasteners 95, such as screws, are inserted throughapertures 94 into wall 14.Second flange 96 and aflange 98 offrame members 24 defineschannel 40 each have a ramped edge that facilitates insertion offlange 98 oversecond flange 96. Asflange 98 offrame member 24 slides downflange 96 ofwall coupler 90,frame 16 is drawn closer to wall 14. If necessary to centerframe 16,frame 16 can be slid right or left onwall couplers 90 to a centered position without having to removeframe 16 from wall 14. To removeframe 16 for adjustment of the tension inscreen 18 or otherwise,frame 16 is raised up and removed from wall 14. -
FIGS. 7 and 8 illustratescreen 18 coupled toframe 16. Preferably,frame member 24 has awidth 100 that is 4 inches wide. These figures and the others are proportional. Thus, one of ordinary skill in the art can derive dimensions for the other components from the figures based on the knownwidth 100 offrame 24. According to alternative embodiments other widths are provided, such as 2, 3, or 5 inches. - When coupled to
frame 16,perimeter portions 110 ofscreen 18 overlaprespective walk 112 offrame members 24 and corresponding walk 114 ofcorner members 22. A substantiallyflat display portion 116 ofscreen 18 is surrounded byperimeter portions 110 and provides adisplay surface 118 on one side ofdisplay portion 116 on which images projected onscreen 18 by projector 12 (either front or rear projection) are viewed by the audience seated in front of projection screen apparatus 10.Display surface 118 defines aplane 120 that has afirst audience side 122 and an oppositesecond side 124. As shown inFIG. 8 ,screen coupler 20 is positioned onaudience side 122 ofplane 120 andwall coupler 90 is positioned onopposite side 124. -
Wall 112 includes afirst corner 126 on its inner edge that causesscreen 18 to turn or bend and dividesscreen 18 into perimeter anddisplay portions FIG. 8 .Wall 112 also includes asecond bend 128 that turns and dividesperimeter portion 110 ofscreen 18 into first andsecond segments Corner 126 and bend 128 assist in suppressing puckering or creasing of screen caused bycoupler 20 so that most, if not all, puckering or creasing is removed fromscreen 18 before reachingdisplay portion 116 so that little or no distortion is caused indisplay surface 118. -
Second segment 132 ofperimeter portion 110 defines aplane 134 having afirst side 136 and asecond side 138. Whenscreen 18 is coupled to frame 16,interactive member 50 ofcoupler 20 is positioned onfirst side 136 along withinteractive members frame member 24 andinteractive members corner members 22. - As shown in
FIG. 8 ,frame 16 includes afront side 140 facing the audience and an oppositeback side 142.Front side 140 is preferably painted or otherwise colored black and includes aface 144, anouter wall 146, and aninner side wall 148. Whenscreen 18 is coupled to frame 16,display portion 116 ofscreen 18 defines anangle 150 of 91° to suppress images from “washing” ontoface 144. Furthermore,face 144 andinner side wall 148 have a relatively large radius of 0.25 inches therebetween that further suppresses washing. - In a typical installation,
frame 16 is first assembled as described above.Screen 18 andscreen couplers 20 are coupled together as described above either before or afterframe 16 is assembled.Screen 18 is then coupled to frame 16 withscreen couplers 20. Atool 152, such as a plastic putty knife, is provided to assist incoupling couplers 20 to frame 16. Eachcoupler 20 includes arib 154 positioned oppositerib 58 that is configured to receive afront edge 156 oftool 152. - Initially,
screen coupler 20 is positioned adjacent to wall 112 of therespective frame member 24. By pressing onrib 154 withtool 152,rib 58 is forced alongwall 112 until it snaps into one ofgrooves rib 58 is positioned ingroove 76,tool 152 is slid along the length ofcoupler 20 forcing the entire length ofrib 58 intogroove 76. Preferably,screen 18 is sized so that whenribs 58 ofcouplers 20 are positioned infirst grooves 76,screen 18 is properly tensioned so thatdisplay portion 116 ofscreen 18 is properly tensioned and substantially flat. Depending on factors, such as manufacturing tolerances, temperature, or humidity, one or more ofribs 58 ofcouplers 20 may need to be moved further outward to second orthird grooves - After a period time passes from the initial installation,
screen 18 may stretch and develop a sag that noticeably distorts the quality of the images displayed onscreen 18. To remove this sag, one ormore couplers 20 is moved further out to the nextrespective groove screen 18 is removed. Becausecouplers 20 an inaccessible from the front of projection screen apparatus 10, it must first be removed from wall 14 before the adjustment can be made. - As shown in
FIG. 10 ,channel 26 is sized to receivecoupler 26 androd 56. Before shipping,coupler 26 androd 56 are placed inchannel 26. This help avoids damage tocoupler 26 androd 56 during shipping and also reduces the shipping space required. - Preferably, instructions for the assembly, installation, and/or use of projection screen apparatus 10 are provided with projection screen apparatus 10 or otherwise communicated to permit a person or machine to assemble, install and/or use projection screen apparatus 10. Such instructions may include a description of any or all portions of projection screen apparatus 10 and/or any or all of the above-described assembly, installation, and use of projection screen apparatus 10 or components of projection screen apparatus 10. The instructions may be provided on separate papers and/or on the packaging in which projection screen apparatus 10 is sold or shipped. These instructions may also be provided over the Internet or other communication system. Furthermore, the instructions may be embodied as text, pictures, audio, video, or any other medium or method of communicating instructions known to those of ordinary skill in the art.
- Although the present invention has been described in detail with reference to preferred embodiments, variations and modifications exist within the scope and spirit of the present invention as described and defined in the following claims.
Claims (2)
1-20. (canceled)
21. A projection screen apparatus for use with a projector configured to project an image to be watched by a viewer, the projection screen apparatus including:
a projection screen having a viewing surface configured to display the image to the viewer;
a frame supporting the projection screen and including a plurality of frame members, the plurality of frame members including a top frame member extending along a top edge of the projection screen, the top frame member being a unitary extruded member including:
a front wall having a first side facing the viewer and a second side opposite the first side,
an upper portion including a first channel extending the length of the top frame member,
a lower portion including a second channel extending the length of the top frame member, and
a plurality of ribs extending from the second side, each rib defining an undercut groove, a first rib of the plurality of ribs forming a top wall of the second channel, and a second rib of the plurality of ribs being positioned between the first channel and the second channel; and
at least coupler coupling the projection screen to the frame, a first coupler of the at least one coupler coupling the top edge of the projection screen to the top frame member with the top edge of the projection screen being positioned rearward of the front wall of the top frame member, the first coupler being a unitary extruded member including:
a central body;
a lower circular portion extending from the central body, the lower circular portion having an open end and a channel extending the length of the first coupler, the top edge of the projection screen being located in the channel extending the length of the first coupler and the projection screen extends downward through the open end of the lower circular portion; and
an upper portion including a first rib and a second rib, the first rib extending from the central body in a first direction towards the first side of the front wall of the top frame member, the first rib defining with the central body an undercut groove, the second rib extending from the central body in a second direction away from the first side of the front wall of the top frame member,
wherein the first rib of the first coupler is positioned on top of a rib of the plurality of ribs of the top frame member to couple the projection screen to the top frame member, the undercut groove of the first rib of the first coupler receiving the rib of the plurality of ribs of the top frame member, the first channel of the top frame member being sized and shaped to receive the first coupler for storage of the first coupler when uncoupled from the projection screen.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/209,075 US20170160630A1 (en) | 2002-12-20 | 2016-07-13 | Tensioned projection screen apparatus |
US15/921,157 US20190056649A1 (en) | 2002-12-20 | 2018-03-14 | Tensioned projection screen apparatus |
US16/666,505 US20200064724A1 (en) | 2002-12-20 | 2019-10-29 | Tensioned projection screen apparatus |
US16/952,752 US20210318605A1 (en) | 2002-12-20 | 2020-11-19 | Tensioned projection screen apparatus |
US17/672,101 US20230034740A1 (en) | 2002-12-20 | 2022-02-15 | Tensioned projection screen apparatus |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
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US10/327,421 US6785047B1 (en) | 2002-12-20 | 2002-12-20 | Tensioned projection screen apparatus |
US10/930,255 US7113332B1 (en) | 2002-12-20 | 2004-08-31 | Tensioned projection screen apparatus |
US11/526,951 US7369310B1 (en) | 2004-08-31 | 2006-09-26 | Tensioned projection screen |
US12/115,351 US7808702B1 (en) | 2004-08-31 | 2008-05-05 | Tensioned projection screen apparatus |
US12/897,484 US8358464B1 (en) | 2002-12-20 | 2010-10-04 | Tensioned projection screen apparatus |
US13/739,339 US8810909B2 (en) | 2002-12-20 | 2013-01-11 | Tensioned projection screen apparatus |
US14/463,097 US9395615B2 (en) | 2002-12-20 | 2014-08-19 | Method of assembling a tensioned projection screen apparatus |
US15/209,075 US20170160630A1 (en) | 2002-12-20 | 2016-07-13 | Tensioned projection screen apparatus |
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US14/463,097 Continuation US9395615B2 (en) | 2002-12-20 | 2014-08-19 | Method of assembling a tensioned projection screen apparatus |
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US201715670663A Continuation | 2002-12-20 | 2017-08-07 |
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US12/115,351 Active US7808702B1 (en) | 2002-12-20 | 2008-05-05 | Tensioned projection screen apparatus |
US12/897,484 Expired - Lifetime US8358464B1 (en) | 2002-12-20 | 2010-10-04 | Tensioned projection screen apparatus |
US13/739,339 Expired - Lifetime US8810909B2 (en) | 2002-12-20 | 2013-01-11 | Tensioned projection screen apparatus |
US14/463,097 Expired - Fee Related US9395615B2 (en) | 2002-12-20 | 2014-08-19 | Method of assembling a tensioned projection screen apparatus |
US15/209,075 Abandoned US20170160630A1 (en) | 2002-12-20 | 2016-07-13 | Tensioned projection screen apparatus |
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US11/526,951 Expired - Lifetime US7369310B1 (en) | 2002-12-20 | 2006-09-26 | Tensioned projection screen |
US12/115,351 Active US7808702B1 (en) | 2002-12-20 | 2008-05-05 | Tensioned projection screen apparatus |
US12/897,484 Expired - Lifetime US8358464B1 (en) | 2002-12-20 | 2010-10-04 | Tensioned projection screen apparatus |
US13/739,339 Expired - Lifetime US8810909B2 (en) | 2002-12-20 | 2013-01-11 | Tensioned projection screen apparatus |
US14/463,097 Expired - Fee Related US9395615B2 (en) | 2002-12-20 | 2014-08-19 | Method of assembling a tensioned projection screen apparatus |
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Also Published As
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US20140360000A1 (en) | 2014-12-11 |
US7369310B1 (en) | 2008-05-06 |
US7808702B1 (en) | 2010-10-05 |
US8358464B1 (en) | 2013-01-22 |
US8810909B2 (en) | 2014-08-19 |
US20130141783A1 (en) | 2013-06-06 |
US9395615B2 (en) | 2016-07-19 |
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