US3877802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of enlarging images without lenses and display device utilizing the method
Assignee: Individual
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Filing: 1973-04-16
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Granted: 1975-04-15
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Expires: 1993-04-16
Abstract
Abstract A method of enlarging a two-dimensional image along two of its planar orthogonal directions includes the step of forming a light beam consisting of adjacent substantially parallel light ray portions oriented in a first direction, said parallel light ray portions together defining the image. The light ray portions are separated into a plurality of spaced light rays along a direction corresponding to a planar direction of the image. The light rays are directed in spaced relation to one another in a second direction orthogonal to the first direction. The light rays are again separated along a direction corresponding to an other planar direction of the image into a further plurality of light rays and directed in spaced relation to one another in a third direction which is mutually orthogonal to the first and second directions. The further light rays together define the image in a dissected or dispersed form - the spaced relation of the further light rays defining a viewing area which is greater than that defined by the original adjacent light ray portions. A display device which embodies the principal of the method includes a substantially planar rectangular enclosure having spaced horizontal and vertical sides when mounted on a wall. The depth of the enclosure is substantially smaller than its height and width. The enclosure is provided with four elongated outer chambers which together define a central rectangular chamber. A scattering surface in the form of a planar reflector, comprising a plurality of elongated spaced and parallel reflecting surfaces, is positioned in one of the outer chambers. A similar planar reflector is positioned in the central chamber. A rectangular projection screen generally defining a plane parallel to the planar enclosure forms one of the exterior walls of the central chamber. The planar reflectors in the outer and the central chambers are so arranged so that substantially parallel rays, after being transmitted through a transparency, are directed from said one outer chamber into the central chamber along the second direction substantially parallel to the horizontal spaced sides. The further light rays are directed from the central chamber onto the projection screen along the third direction substantially normal to the plane defined by the screen.
Inventors
- 👤 Myron Greenspan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:23
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
135 words
Display device for enlarging a two-dimensional image at least along one of its planar directions, comprising light beam forming means for forming a light beam having substantially parallel light ray portions oriented in a first direction, said parallel light ray portions together defining the image; scattering means for separating, along a direction corresponding to a planar direction of the image, said light ray portions into a plurality of spaced, substantially parallel light rays and for directing said light rays in spaced relation to one another in a second direction, whereby the dimension of the image as defined by said spaced light rays is greater than the corresponding dimension of the original image along said planar direction; and projecting screen means arranged to intercept said spaced light rays for forming an image defined by the latter.
Claim 2
Dependent Claim
135 words
Display device for enlarging a two-dimensional image at least along one of its planar directions, comprising light beam forming means for forming a light beam having substantially parallel light ray portions oriented in a first direction, said parallel light ray portions together defining the image; scattering means for separating, along a direction corresponding to a planar direction of the image, said light ray portions into a plurality of spaced, substantially parallel light rays and for directing said light rays in spaced relation to one another in a second direction, whereby the dimension of the image as defined by said spaced light rays is greater than the corresponding dimension of the original image along said planar direction; and projecting screen means arranged to intercept said spaced light rays for forming an image defined by the latter.
Claim 3
Dependent Claim
107 words
Display device as claimed in claim 1, wherein said scattering means comprises a plurality of reflecting surfaces arranged so as to generally define a plane forming a predetermined angle with said first direction, each of said reflecting surfaces forming an angle with said first direction which is different from said predetermined angle and selected so as to establish an effective angle of reflection of said light rays with respect to said plaNe which is smaller than an effective angle of incidence of said light ray portions with respect to said plane when said light ray portions impinge on and said light rays reflect from said reflecting surfaces.
Claim 4
Dependent Claim
49 words
Display device as defined in claim 2, wherein said reflecting surfaces are elongate and generally extend in directions normal to both the directions of said light ray portions and said light rays, said reflecting surfaces being parallel to one another and spaced from each other along said first direction.
Claim 5
Dependent Claim
23 words
Display device as defined in claim 2, wherein the angle formed between each reflecting surface and said first direction is equal to 45*.
Claim 6
Dependent Claim
20 words
Display device as defined in claim 2, wherein said predetermined angle is selected to be equal to less than 45*.
Claim 7
Dependent Claim
20 words
Display device as defined in claim 1, wherein said projecting screen means includes diffusing means for diffusing said light rays.
Claim 8
Dependent Claim
20 words
Display device as defined in claim 1, wherein said projecting screen comprises a magnifying means for magnifying said light rays.
Claim 9
Dependent Claim
121 words
Display device as defined in claim 1, wherein an image is enlarged along two planar direction, and wherein first and second scattering means are provided, a first scattering means being arranged for separating the light ray portions into a plurality of first light rays along a direction corresponding to one planar direction of the image and for directing said first light rays in spaced relationship to one another in a second direction, and wherein said second scattering means is arranged for separating said first light rays into a plurality of second light rays along a direction corresponding to another planar direction of the image and for directing said second light rays in spaced relationship to one another in a third direction.
Claim 10
Dependent Claim
53 words
Display device as defined in claim 2, wherein the complementary angle of said predetermined angle is phi , and wherein the degree to which the image is enlarged along said planar direction is defined by the following relation for magnification m: phi tan 1m for angles of phi at least equal to 45*.
Claim 11
Dependent Claim
20 words
Display device as defined in claim 8, wherein said first, second and third directions are mutually orthogonal to each other.
Claim 12
Dependent Claim
177 words
Display device as defined in claim 10, wherein the device is mountable on a wall, and further comprising a substantially rectangular planar enclosure having spaced horizontal and vertical sides when mounted on a wall, said enclosure having a depth substantially smaller than its height and width, said enclosure having at least one elongated outer chamber along one of its sides and a central rectangular chamber, wherein said first scattering means is positioned in said one outer chamber and said second scattering means is positioned in said central chamber said screen means generally defining a plane parallel to said planar enclosure and forming one exterior wall of said central chamber, said first and second scattering means being arranged so that said first light rays are directed from said one outer chamber into said central chamber along said second direction substantially parallel to one of said spaced sides, and so that said second light rays are directed from said central chamber into said screen means along said third direction substantially normal to the plane defined by said screen means.
Claim 13
Dependent Claim
47 words
Display device as defined in claim 10, wherein said enclosure includes means for receiving a photographic transparency; and wherein said light beam forming means comprises means for transmitting substantially parallel light through a transparency along said first direction substantially parallel to the other of said spaced sides.
Claim 14
Dependent Claim
131 words
Display device as defined in claim 11, wherein said enclosure is provided with four elongated outer chambers two of which form said spaced horizontal sides and two of which form said spaced vertical sides, said one outer chamber being one of said vertical outer chambers, said Means for transmitting parallel light being arranged to project said parallel light at least partially through one of said vertical chambers, said light means further comprising electrical energy producing means provided in either one of said outer of said vertical outer chambers and other of said horizontal chambers and connected to said means for transmitting parallel light; and mirror means for deflecting said parallel light in said one of said horizontal outer chambers along said first direction in said one of said vertical outer chambers.
Claim 15
Independent Claim
127 words
A method of enlarging a twodimensional image at least along one of its planar directions comprising the steps of forming a light beam having substantially parallel light ray portions oriented in a first direction, said parallel light ray portions together defining the image; separating said light ray portions, along a direction corresponding to a planar direction of the image, into a plurality of spaced, substantially parallel light rays; directing said light rays in spaced relation to one another in a second direction, whereby the dimensions of the image defined by said light rays is greater than the corresponding dimension of the original image along said planar direction; and intercepting said spaced light rays with a projecting screen to form an image defined by said spaced light rays.
Claim 16
Independent Claim
127 words
A method of enlarging a twodimensional image at least along one of its planar directions comprising the steps of forming a light beam having substantially parallel light ray portions oriented in a first direction, said parallel light ray portions together defining the image; separating said light ray portions, along a direction corresponding to a planar direction of the image, into a plurality of spaced, substantially parallel light rays; directing said light rays in spaced relation to one another in a second direction, whereby the dimensions of the image defined by said light rays is greater than the corresponding dimension of the original image along said planar direction; and intercepting said spaced light rays with a projecting screen to form an image defined by said spaced light rays.
Claim 17
Dependent Claim
19 words
A method as defined in claim 14, further comprising the step of diffusing each of said spaced light rays.
Claim 18
Dependent Claim
19 words
A method as defined in claim 14, further comprising the step of magnifying each of said spaced light rays.
Claim 19
Dependent Claim
75 words
A method as defined in claim 14, wherein the image is enlarged along another of its planar directions, further comprising the step of separating said light rays into another plurality of light rays along a direction corresponding to another planar direction of the image; and directing said other light rays in spaced relation to one another in a third direction, said first, second and third directions being so selected so that they are mutually orthogonal.
Claim 20
Dependent Claim
245 words
Display device mountable on a wall comprising a substantially rectangular enclosure having spaced horizontal and vertical sides when mounted on the wall, said enclosure having a depth substantially smaller than the height and width thereof, said enclosure having at least one elongated outer chamber extending along one of its sides and a central rectangular chamber; light beam forming means within said enclosure for forming a light beam having cross sectional dimensions corresponding to an image having predetermined first and second normal planar directions and for directing the same into said elongate outer chamber, said light beam being defined by a plurality of contiguous parallel light ray portions; first scattering means in said elongate outer chamber in the path of said light beam for intercepting the latter and separating said contiguous light ray portions along a direction corresponding to one planar dimension of the image into a plurality of spaced first light rays and reflecting the same into said central rectangular chamber; a second scattering means in said central rectangular chamber in the path of said first light rays for intercepting the latter and separating the same along a direction corresponding to another normal planar dimension of the image into a plurality of spaced second light rays and reflecting the same in a direction substantially normal to the rectangular enclosure; and projecting screen means in the path of said spaced second light rays for intercepting the same and for forming an image defined by the latter.
Claim 21
Dependent Claim
245 words
Display device mountable on a wall comprising a substantially rectangular enclosure having spaced horizontal and vertical sides when mounted on the wall, said enclosure having a depth substantially smaller than the height and width thereof, said enclosure having at least one elongated outer chamber extending along one of its sides and a central rectangular chamber; light beam forming means within said enclosure for forming a light beam having cross sectional dimensions corresponding to an image having predetermined first and second normal planar directions and for directing the same into said elongate outer chamber, said light beam being defined by a plurality of contiguous parallel light ray portions; first scattering means in said elongate outer chamber in the path of said light beam for intercepting the latter and separating said contiguous light ray portions along a direction corresponding to one planar dimension of the image into a plurality of spaced first light rays and reflecting the same into said central rectangular chamber; a second scattering means in said central rectangular chamber in the path of said first light rays for intercepting the latter and separating the same along a direction corresponding to another normal planar dimension of the image into a plurality of spaced second light rays and reflecting the same in a direction substantially normal to the rectangular enclosure; and projecting screen means in the path of said spaced second light rays for intercepting the same and for forming an image defined by the latter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |