US4842389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle display system using a holographic windshield prepared to withstand lamination process
Assignee: Flight Dynamics Inc
•
Filing: 1987-06-12
•
Granted: 1989-06-27
•
Expires: 2007-06-12
Abstract
Abstract A holographic windshield (10) includes an inner glass ply (36) having an inner flexible optically transparent inner interlayer (42) overlaid upon its inner surface (40). A middle flexible transparent interlayer (44) is overlaid upon the inner interlayer. The middle interlayer has an opening (46) formed therein. A flexible hologram (12) is fitted within the opening in the middle interlayer. An outer interlayer (48) is overlaid upon the middle interlayer including the flexible hologram. An outer glass ply (50) is overlaid upon the outer interlayer. The two glass plies are bonded together to form a unitary article. Also disclosed is a method for processing a holographic combiner to withstand a windshield construction process employing lamination techniques.
Inventors
- 👤 Robert B. Wood
- 👤 Mark A. Thomas
- 👤 James L. Valimont
- 👤 H. Edward Littell, Jr.
- 👤 Glenn E. Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:26
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/1055; B32B17/1077; G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101; G02B27/0103; G02B2027/0109; G02B2027/0112
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
111 words
A laminated vehicle windshield assembly, comprising: an optically transparent inner ply; a first optically transparent interlayer covering one side of the inner ply; a second optically transparent interlayer covering the first interlayer, the second interlayer having an opening formed therein; exposed photosensitive material having wavelength selective properties and fitted within the opening of the second interlayer; a third optically transparent interlayer covering the second interlayer and the photosensitive material fitted within the opening in the second interlayer; and an optically transparent outer ply covering the third interlayer, thereby to provide a laminated windshield assembly that is capable of maintaining the wavelength selective properties of the photosensitive material during a lamination process.
Claim 2
Dependent Claim
111 words
A laminated vehicle windshield assembly, comprising: an optically transparent inner ply; a first optically transparent interlayer covering one side of the inner ply; a second optically transparent interlayer covering the first interlayer, the second interlayer having an opening formed therein; exposed photosensitive material having wavelength selective properties and fitted within the opening of the second interlayer; a third optically transparent interlayer covering the second interlayer and the photosensitive material fitted within the opening in the second interlayer; and an optically transparent outer ply covering the third interlayer, thereby to provide a laminated windshield assembly that is capable of maintaining the wavelength selective properties of the photosensitive material during a lamination process.
Claim 3
Dependent Claim
15 words
The windshield assembly of claim 1 in which the photosensitive material comprises holographic recording material.
Claim 4
Dependent Claim
18 words
The windshield assembly of claim 2 in which the holographic recording material is deposited on a flexible substrate.
Claim 5
Dependent Claim
116 words
A laminated vehicle windshield, comprising: first and second optically transparent plies, the first and second plies having opposed inner surfaces; exposed photosensitive material having wavelength selective properties and positioned in a region between the inner surfaces of the first and second plies, the photosensitive material having first and second major surfaces; and an optically transparent, flexible interlayer ply covering one of the first and second major surfaces of the photosensitive material and positioned between the inner surfaces of the first and second plies, the interlayer ply cooperating with the first and second plies and the photosensitive material to provide a laminated vehicle windshield substantially of optically transparent character in the region occupied by the photosensitive material.
Claim 6
Dependent Claim
116 words
A laminated vehicle windshield, comprising: first and second optically transparent plies, the first and second plies having opposed inner surfaces; exposed photosensitive material having wavelength selective properties and positioned in a region between the inner surfaces of the first and second plies, the photosensitive material having first and second major surfaces; and an optically transparent, flexible interlayer ply covering one of the first and second major surfaces of the photosensitive material and positioned between the inner surfaces of the first and second plies, the interlayer ply cooperating with the first and second plies and the photosensitive material to provide a laminated vehicle windshield substantially of optically transparent character in the region occupied by the photosensitive material.
Claim 7
Dependent Claim
14 words
The windshield of claim 4 in which the photosensitive material comprises holographic recording material.
Claim 8
Dependent Claim
33 words
The windshield of claim 5 in which the holographic recording material is deposited on an optically transparent substrate comprising a flexible material that is adaptable to conform to the contour of the plies.
Claim 9
Dependent Claim
33 words
The windshield of claim 4 in which the photosensitive material comprises holographic recording material of thermally stabilized character that maintains the wavelength selective properties thereof over a relatively broad range of elevated temperatures.
Claim 10
Dependent Claim
47 words
The windshield of claim 4 in which the interlayer ply is a first interlayer ply covering the first major surface of the photosensitive material and in which the windshield further comprises a second optically transparent, flexible interlayer ply covering the second major surface of the photosensitive material.
Claim 11
Dependent Claim
14 words
The windshield of claim 8 in which the photosensitive material comprises holographic recording material.
Claim 12
Dependent Claim
31 words
The windshield of claim 9 in which the photosensitive material is deposited on an optically transparent substrate of flexible material that is adaptable to conform to the contour of the plies.
Claim 13
Dependent Claim
30 words
The windshield of claim 4 in which the photosensitive material is of thermally stabilized character that maintains the wavelength selective properties thereof over a relatively broad range of elevated temperatures.
Claim 14
Dependent Claim
15 words
The windshield of claim 4 in which the first and second plies comprise glass material.
Claim 15
Dependent Claim
14 words
The windshield of claim 12 in which the photosensitive material comprises holographic recording material.
Claim 16
Dependent Claim
12 words
The windshield of claim 4 in which the flexible ply comprises polyurethane.
Claim 17
Dependent Claim
13 words
The windshield of claim 4 in which the flexible ply comprises polyvinyl butyral.
Claim 18
Dependent Claim
154 words
An optical display system for installation in a vehicle having a windshield through which an observer can view an outside world scene, the windshield including an optically transparent ply and an optically transparent, flexible ply having opposed inner surfaces, the system comprising: image source means for providing light image information; optical element means for displaying the image information to the observer, the optical element means comprising exposed photosensitive material having wavelength selective properties, the photosensitive material being positioned between and covered by the inner surfaces of the ply and the flexible ply, the photosensitive material having been exposed to reflect the light image information and transmit incident light carrying the outside world scene; and image projecting and aberration correcting means for directing the image information toward the optical element means and correcting for optical aberrations in the image information, thereby to display the image information and transmit the outside world scene to the observer.
Claim 19
Dependent Claim
154 words
An optical display system for installation in a vehicle having a windshield through which an observer can view an outside world scene, the windshield including an optically transparent ply and an optically transparent, flexible ply having opposed inner surfaces, the system comprising: image source means for providing light image information; optical element means for displaying the image information to the observer, the optical element means comprising exposed photosensitive material having wavelength selective properties, the photosensitive material being positioned between and covered by the inner surfaces of the ply and the flexible ply, the photosensitive material having been exposed to reflect the light image information and transmit incident light carrying the outside world scene; and image projecting and aberration correcting means for directing the image information toward the optical element means and correcting for optical aberrations in the image information, thereby to display the image information and transmit the outside world scene to the observer.
Claim 20
Dependent Claim
27 words
The display system of claim 16 in which the image source means comprises a liquid crystal display and a light source for illuminating the liquid crystal display.
Claim 21
Dependent Claim
24 words
The display system of claim 17, further comprising light transfer means for transmitting light emitted by the light source to the liquid crystal display.
Claim 22
Dependent Claim
27 words
The display system of claim 18 in which the light transfer means comprises a tubular light pipe whose inner surface has reflection properties that promote light transmission.
Claim 23
Dependent Claim
29 words
The display system of claim 19 in which the light transfer means comprises a tubular light pipe having heat conduction properties that dissipate heat produced by the light source.
Claim 24
Dependent Claim
28 words
The display system of claim 16 in which the photosensitive material is deposited on a flexible substrate that is adaptable to conform to the contour of the plies.
Claim 25
Dependent Claim
15 words
The display system of claim 21 in which the photosensitive material comprises holographic recording material.
Claim 26
Dependent Claim
37 words
The display system of claim 16 in which the flexible ply has an outer surface and in which the windshield comprises two optically transparent plies, one ply of which covering the outer surface of the flexible ply.
Claim 27
Dependent Claim
12 words
The windshield of claim 16 in which the ply comprises glass material.
Claim 28
Dependent Claim
90 words
A laminated vehicle windshield, comprising: an optically transparent ply having a predetermined contour and a major surface; exposed photosensitive material having light reflecting, wavelength selective properties and first and second major surfaces; optically transparent material positioned between the major surface of the ply and the first major surface of the photosensitive material; and an optically transparent, flexible ply covering the second major surface of the photosensitive material and cooperating with the ply, the photosensitive material, and the flexible ply to provide a laminated vehicle windshield substantially of optically transparent character.
Claim 29
Dependent Claim
90 words
A laminated vehicle windshield, comprising: an optically transparent ply having a predetermined contour and a major surface; exposed photosensitive material having light reflecting, wavelength selective properties and first and second major surfaces; optically transparent material positioned between the major surface of the ply and the first major surface of the photosensitive material; and an optically transparent, flexible ply covering the second major surface of the photosensitive material and cooperating with the ply, the photosensitive material, and the flexible ply to provide a laminated vehicle windshield substantially of optically transparent character.
Claim 30
Dependent Claim
14 words
The windshield of claim 25 in which the photosensitive material comprises holographic recording material.
Claim 31
Dependent Claim
45 words
The windshield of claim 25 in which the photosensitive material comprises holographic recording material and which further comprises a substrate on which the holographic recording material is deposited, the substrate comprising a flexible material that is adaptable to conform to the contour of the ply.
Claim 32
Dependent Claim
15 words
The windshield of claim 25, further comprising an optically transparent ply covering the flexible ply.
Claim 33
Dependent Claim
30 words
The windshield of claim 25 in which the photosensitive material is of thermally stabilized character that maintains the wavelength selective properties thereof over a relatively broad range of elevated temperatures.
Claim 34
Dependent Claim
12 words
The windshield of claim 25 in which the ply comprises glass material.
Claim 35
Dependent Claim
12 words
The windshield of claim 25 in which the flexible ply comprises polyurethane.
Claim 36
Dependent Claim
13 words
The windshield of claim 25 in which the flexible ply comprises polyvinyl butyral.
Claim 37
Dependent Claim
94 words
A laminated vehicle windshield, comprising: first and second optically transparent plies, the first and second plies having opposed inner surfaces; and exposed photosensitive material having wavelength selective properties and positioned in a region between the opposed inner surfaces of the first and second plies, the photosensitive material being of thermally stabilized character that maintains the wavelength selective properties thereof over a relatively broad range of elevated temperatures, and the plies and the photosensitive material cooperating to provide a laminated vehicle windshield substantially of optically transparent character in the region occupied by the photosensitive material.
Claim 38
Dependent Claim
94 words
A laminated vehicle windshield, comprising: first and second optically transparent plies, the first and second plies having opposed inner surfaces; and exposed photosensitive material having wavelength selective properties and positioned in a region between the opposed inner surfaces of the first and second plies, the photosensitive material being of thermally stabilized character that maintains the wavelength selective properties thereof over a relatively broad range of elevated temperatures, and the plies and the photosensitive material cooperating to provide a laminated vehicle windshield substantially of optically transparent character in the region occupied by the photosensitive material.
Claim 39
Dependent Claim
16 words
The windshield of claim 33 in which the photosensitive material has light reflecting wavelength selective properties.
Claim 40
Dependent Claim
27 words
The windshield of claim 33 in which the photosensitive material is deposited on a flexible substrate that is adaptable to conform to the contour of the plies.
Claim 41
Dependent Claim
14 words
The windshield of claim 33 in which the photosensitive material comprises holographic recording material.
Claim 42
Dependent Claim
28 words
The windshield of claim 36 in which the holographic recording material is deposited on a flexible substrate that is adaptable to conform to the contour of the plies.
Claim 43
Dependent Claim
15 words
The windshield of claim 33 in which the first and second plies comprise glass material.
Claim 44
Dependent Claim
39 words
The windshield of claim 33 in which the photosensitive material has a major surface and which further comprises an optically transparent, flexible ply covering the major surface of the photosensitive material and positioned between the first and second plies.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |