CA2069827A1 - Distortion free window screens - Google Patents
Distortion free window screensInfo
- Publication number
- CA2069827A1 CA2069827A1 CA 2069827 CA2069827A CA2069827A1 CA 2069827 A1 CA2069827 A1 CA 2069827A1 CA 2069827 CA2069827 CA 2069827 CA 2069827 A CA2069827 A CA 2069827A CA 2069827 A1 CA2069827 A1 CA 2069827A1
- Authority
- CA
- Canada
- Prior art keywords
- screen
- strands
- transparent
- distortion
- attenuation
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Landscapes
- Woven Fabrics (AREA)
Abstract
DISTORTION FREE WINDOW SCREENS
ABSTRACT OF THE DISCLOSURE
An improved window screen comprising a frame supporting an essentially transparent screen including a plurality of intersecting strands, each of said strands being substantially free of optical attenuation and optical distortion; said frame comprising suitable support means for maintaining said intersecting strands comprising said screen in tension, said transparent screen comprising a woven arrangement of elongated substantially round elements each being transparent in all planes such that all light impinging thereon passes therethrough without significant distortion or attenuation.
ABSTRACT OF THE DISCLOSURE
An improved window screen comprising a frame supporting an essentially transparent screen including a plurality of intersecting strands, each of said strands being substantially free of optical attenuation and optical distortion; said frame comprising suitable support means for maintaining said intersecting strands comprising said screen in tension, said transparent screen comprising a woven arrangement of elongated substantially round elements each being transparent in all planes such that all light impinging thereon passes therethrough without significant distortion or attenuation.
Description
20~877 01 DOCKET: 2067-731 02 DATE: March 4, 1991 05 TITLE: Distortion Free Window sc~eens 06 INVENTORS: Christopher Langdon 09 . .
Field of the Invention 12 The invention generally relates to windo~ screens and more 13 specifically to window screens which are essentially totally 14 transparent and free of distortions.
16 ~escription Of The Prior Art 18 A wide variety of window screens are available .in the prior art.
19 For many years, most window screens were made of metal which would eventually rust. Additionally, the indivi~ual strands or 21 elements of such screens were totally opaque leadinq to 22 significant attenuation and disLor~io., of light passing 23 therethrough. These characteris~ic were undesirable in that they 24 distorted the view available through windows or doors treated with such material. Conventional fiber optic cables are known to 26 be essentially totally transparent and introduce little or no distortion to light passing therethrough. However, prior to the 2~fig~27 _ 01 disclosed invention no effort had been made to take advantage of 02 these characteristics of fiber optic bundles in forming window 03 screens. Additionally, clear transparent strands of plastic 04 providing similar optical advantages have not been similarly used 05 in the prior art.
08 Summary of the Invention 09 . I
The disclosed invention comprises an improved window screen which 11 is essentially free of the undesirable characteristics associated 12 with prior art devices. More specifically, the preferred 13 embodiment of the invention comprises a window screen in which 14 each strand of the screen is substantially totally transparent.
In all cases the screen comprise ~ ~iu~ality of opti_ally 16 transparent strands with selected strands intersecting at an 17 angle to form the screen. The strands may be woven or tne 18 strands may be bonded at their intersections to form the screen.
19 Light passes through the strands distortion free. In the preferred embodiment, the strands of the screen are conventional 21 optical fibers. In alternate embodiments the members of the 22 screen may be formed of transparent plastic.
24 Description of the Drawings 26 Figure 1 is a fragmentary view of a window screen in accordance with the invention.
- 2~9827 02 Figure 2 is a cross-sectional view of a typical span of the 03 window screen.
05 Detailed Description 07 Figure 1 is a fragmentary drawing of a portion of a window screen 08 in accordance with the disclosed invention. More specifically, 09 the screen consists of a woven arrangement or mesh with the strands comprising the mesh collectively illustrated at reference 11 numeral 10. In use, the mesh 10 is supported on all sides by a 12 frame 12 which holds the individual strands of the screen 10 in 13 tension so that the mesh has a flat even appearance. The frame 14 10 is then attached to a wall 14 to form an opening or window covered with the screen. The screen lo may be used in 16 conjunction with conventional doors and windows in which case the 17 frame 10 may be either hinged or slideable as is conventional in 18 the prior art.
Figure 2 specifically illustrates the operation of a typi!cal 21 strand 20 of the screen 10. More specifically, a light beam 30 22 impinges on one side of a typical strand 20 of the screen and 23 travels therethrough to produce an output beam 32. In order for 24 the screen to ~unction in the desired fashion, the output beam 32 must be essentially of the same magnitude as the input beam 30 in 26 order to prevent attenuation. Additionally, the characteristics of the input beam and output beam 30 and 32, must be essentially -- 2~9~27 01 identical in direction, width and magnitude as ~he input beam 02 in order to prevent distortion. Ma~L-1a1~ s~ltable for usc for 03 the strand 20 in order to achieve these results include 04 conventional optical fibers such as glass as well as suitable 05 strands of essentially clear distortion free plastic.
07 In an alternate embodiment, the strands may be positioned in a 08 non-woven intersecting relationship to each other and bonded at 09 the intersections of the strands to hold the strands in a fixed relationship to each other to form the screen.
Field of the Invention 12 The invention generally relates to windo~ screens and more 13 specifically to window screens which are essentially totally 14 transparent and free of distortions.
16 ~escription Of The Prior Art 18 A wide variety of window screens are available .in the prior art.
19 For many years, most window screens were made of metal which would eventually rust. Additionally, the indivi~ual strands or 21 elements of such screens were totally opaque leadinq to 22 significant attenuation and disLor~io., of light passing 23 therethrough. These characteris~ic were undesirable in that they 24 distorted the view available through windows or doors treated with such material. Conventional fiber optic cables are known to 26 be essentially totally transparent and introduce little or no distortion to light passing therethrough. However, prior to the 2~fig~27 _ 01 disclosed invention no effort had been made to take advantage of 02 these characteristics of fiber optic bundles in forming window 03 screens. Additionally, clear transparent strands of plastic 04 providing similar optical advantages have not been similarly used 05 in the prior art.
08 Summary of the Invention 09 . I
The disclosed invention comprises an improved window screen which 11 is essentially free of the undesirable characteristics associated 12 with prior art devices. More specifically, the preferred 13 embodiment of the invention comprises a window screen in which 14 each strand of the screen is substantially totally transparent.
In all cases the screen comprise ~ ~iu~ality of opti_ally 16 transparent strands with selected strands intersecting at an 17 angle to form the screen. The strands may be woven or tne 18 strands may be bonded at their intersections to form the screen.
19 Light passes through the strands distortion free. In the preferred embodiment, the strands of the screen are conventional 21 optical fibers. In alternate embodiments the members of the 22 screen may be formed of transparent plastic.
24 Description of the Drawings 26 Figure 1 is a fragmentary view of a window screen in accordance with the invention.
- 2~9827 02 Figure 2 is a cross-sectional view of a typical span of the 03 window screen.
05 Detailed Description 07 Figure 1 is a fragmentary drawing of a portion of a window screen 08 in accordance with the disclosed invention. More specifically, 09 the screen consists of a woven arrangement or mesh with the strands comprising the mesh collectively illustrated at reference 11 numeral 10. In use, the mesh 10 is supported on all sides by a 12 frame 12 which holds the individual strands of the screen 10 in 13 tension so that the mesh has a flat even appearance. The frame 14 10 is then attached to a wall 14 to form an opening or window covered with the screen. The screen lo may be used in 16 conjunction with conventional doors and windows in which case the 17 frame 10 may be either hinged or slideable as is conventional in 18 the prior art.
Figure 2 specifically illustrates the operation of a typi!cal 21 strand 20 of the screen 10. More specifically, a light beam 30 22 impinges on one side of a typical strand 20 of the screen and 23 travels therethrough to produce an output beam 32. In order for 24 the screen to ~unction in the desired fashion, the output beam 32 must be essentially of the same magnitude as the input beam 30 in 26 order to prevent attenuation. Additionally, the characteristics of the input beam and output beam 30 and 32, must be essentially -- 2~9~27 01 identical in direction, width and magnitude as ~he input beam 02 in order to prevent distortion. Ma~L-1a1~ s~ltable for usc for 03 the strand 20 in order to achieve these results include 04 conventional optical fibers such as glass as well as suitable 05 strands of essentially clear distortion free plastic.
07 In an alternate embodiment, the strands may be positioned in a 08 non-woven intersecting relationship to each other and bonded at 09 the intersections of the strands to hold the strands in a fixed relationship to each other to form the screen.
Claims (6)
1. An improved window screen comprising a frame supporting an essentially transparent screen including a plurality of intersecting strands, each of said strands being substantially free of optical attenuation and optical distortion; said frame comprising suitable support means for maintaining said intersecting strands comprising said screen in tension, said transparent screen comprising a woven arrangement of elongated substantially round elements each being transparent in all planes such that all light impinging thereon passes therethrough without significant distortion or attenuation.
2. An improved window screen in accordance with Claim 1 wherein said elongated elements are conventional optical fibers.
3. An improved window screen in accordance with Claim 1 wherein said elongated elements are formed of transparent plastic.
4. An improved window screen comprising a frame supporting an arrangement of transparent intersecting strands, each of said strands being substantially free of optical attenuation and optical distortion; said frame comprising suitable support means for maintaining said intersecting strands comprising said screen in tension, each of said intersecting strands being transparent in all planes such that light impinging thereon passes therethrough without significant distortion or attenuation.
5. An improved window screen in accordance with Claim 1 wherein said elongated elements are conventional optical fibers.
6. An improved window screen in accordance with Claim 1 wherein said elongated elements are formed of transparent plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2069827 CA2069827A1 (en) | 1992-05-28 | 1992-05-28 | Distortion free window screens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2069827 CA2069827A1 (en) | 1992-05-28 | 1992-05-28 | Distortion free window screens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2069827A1 true CA2069827A1 (en) | 1993-11-29 |
Family
ID=4149926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2069827 Abandoned CA2069827A1 (en) | 1992-05-28 | 1992-05-28 | Distortion free window screens |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2069827A1 (en) |
-
1992
- 1992-05-28 CA CA 2069827 patent/CA2069827A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |