US5285438A
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US
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Motionless parallel readout head for an optical disk recorded with arrayed one-dimensional holograms
Assignee: University of California, San Diego
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Filing: 1991-10-31
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Granted: 1994-02-08
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Expires: 2011-10-31
Abstract
Abstract A motionless parallel head reads an optical disk having an active surface encoded with an arrayed multiplicity of one-dimensional holograms. Each 1-D hologram is a computer-encoded representation of, typically, one 128 pixel slice of an image. A group, typically 128, 1-D holograms are positionally distributed, and positionally shifted or staggered one to the next, radially along the disk's active surface so as to fit a complete radius. Typically 14,000 groups are circumferentially-displaced around a 51/4" Compact Disk (CD), forming a herringbone pattern. During readout the encoded CD is simultaneously illuminated along the entirety of one of its radius lines within which a group of holographic data blocks are fitted. The illuminated group of holographic data blocks are optically transformed in parallel by one or more lenses, and preferably by a Hybrid refractive/diffractive Optical Lens (HOL), so as to two-dimensionally spatially encode the wavefront of the light beam by which the group of holographic data blocks was illuminated. The 2-D spatially-encoded light beam is detectable by an array of light detectors. When the disk is rotated then sucessive groups of holographic data blocks that are fitted along successive radius lines are successively retrieved, group by group, at a typically 1.1 Gbyte/sec rate. Such an optical memory is useable as the secondary storage of a high performance optoelectronic associative memory system.
Inventors
- 👤 Philippe J. Marchand
- 👤 Ashok V. Krishnamoorthy
- 👤 Pierre Ambs
- 👤 Kristopher Urquhart
- 👤 Sadik C. Esener
- 👤 H. Sing Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:03
CPC Classifications
G; G01; G01B; G01B7/00; G03; G03H; G03H1/00; G03H1/26; G11; G11B; G11B7/00; G11B7/004; G11B7/0065; H; H04; H04N; H04N19/00; H04N19/60; G03H2210/00; G03H2210/40; G03H2270/00; G03H2270/20; G03H2270/22
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
119 words
A parallel readout optical disk system comprising: an optical disk having an active surface encoded with a multiplicity of data blocks each of which is in the form of a mathematically one-dimensional hologram, each plurality of data blocks that in combination represent one word being positionally distributed, and positionally shifted one to the next, radially along the disk's active surface to fit a complete radius; means for simultaneously illuminating the encoded optical disk along a radius within which the plurality of holographic data blocks constituting one word are fitted; optical transform means responsive to the illuminated plurality of holographic data blocks for transforming the combined holographic images into a light beam upon which the word is encoded in parallel.
Claim 2
Dependent Claim
119 words
A parallel readout optical disk system comprising: an optical disk having an active surface encoded with a multiplicity of data blocks each of which is in the form of a mathematically one-dimensional hologram, each plurality of data blocks that in combination represent one word being positionally distributed, and positionally shifted one to the next, radially along the disk's active surface to fit a complete radius; means for simultaneously illuminating the encoded optical disk along a radius within which the plurality of holographic data blocks constituting one word are fitted; optical transform means responsive to the illuminated plurality of holographic data blocks for transforming the combined holographic images into a light beam upon which the word is encoded in parallel.
Claim 3
Dependent Claim
22 words
The parallel readout optical disk system according to claim 1 wherein the optical disk is encoded with mathematically one-dimensional Fourier transform holograms.
Claim 4
Dependent Claim
44 words
The parallel readout optical disk system according to claim 1 wherein the optical disk is encoded with mathematically one-dimensional Fourier transform holograms algorithmically iteratively generated by adaptation of the Direct Binary Search (DBS) algorithm to a gray level encoded representation of the data word.
Claim 5
Dependent Claim
24 words
The parallel readout optical disk system according to claim 1 wherein the means for illuminating comprises: a collimated light source; and a cylindrical lens.
Claim 6
Dependent Claim
23 words
The parallel readout optical disk system according to claim 4 wherein the collimated light source comprises: a light source; and a collimating lens.
Claim 7
Dependent Claim
19 words
The parallel readout optical disk system according to claim 1 wherein the optical transform means comprises: a lens system.
Claim 8
Dependent Claim
55 words
The parallel readout optical disk system according to claim 6 wherein the optical transform lens system comprises: a first refractive cylindrical lens performing a Fourier transform of the mathematically one-dimensional holograms along the radial direction; and a second refractive cylindrical lens for imaging the transformed holograms along a direction orthogonal to the disk's active surface.
Claim 9
Dependent Claim
55 words
The parallel readout optical disk system according to claim 6 wherein the optical transform lens system comprises: a first diffractive cylindrical lens performing a Fourier transform of the mathematically one-dimensional holograms along the radial direction; and a second diffractive cylindrical lens for imaging the transformed holograms along a direction orthogonal to the disk's active surface.
Claim 10
Dependent Claim
25 words
The parallel readout optical disk system according to claim 6 wherein the optical transform lens system comprises: a Fourier-transforming and imaging hybrid refractive/diffractive optical lens.
Claim 11
Dependent Claim
28 words
The parallel readout optical disk system according to claim 9 wherein the Fourier-transforming and imaging hybrid refractive/diffractive lens comprises: a spherical diffractive lens; and a cylindrical diffractive lens.
Claim 12
Dependent Claim
168 words
A parallel readout optical memory comprising: a media optically encoded with an arrayed multiplicity of data blocks, each of the data blocks constituting a mathematically one-dimensional hologram, a linearly-arrayed plurality of data blocks representing, in combination, one encoded word, a number of linearly-arrayed data blocks being positionally distributed along a path, one linearly-arrayed plurality of data blocks to the next; illuminating means for simultaneously illuminating one entire linearly-arrayed plurality of data blocks encoded in the media, the illuminated plurality of data blocks constituting one encoded word; means for moving the media relative to the illuminating means along the path so that successive linearly-arrayed pluralities of data blocks are successively illuminated; optical transform means response to the illuminating of each successive one of the linearly-arrayed pluralities of data blocks for transforming in parallel, as each such linearly-arrayed plurality of data blocks is successively illuminated, the mathematically one-dimensional holograms that constitute each such illuminated plurality of data blocks into a light beam upon which a word is encoded in parallel.
Claim 13
Dependent Claim
168 words
A parallel readout optical memory comprising: a media optically encoded with an arrayed multiplicity of data blocks, each of the data blocks constituting a mathematically one-dimensional hologram, a linearly-arrayed plurality of data blocks representing, in combination, one encoded word, a number of linearly-arrayed data blocks being positionally distributed along a path, one linearly-arrayed plurality of data blocks to the next; illuminating means for simultaneously illuminating one entire linearly-arrayed plurality of data blocks encoded in the media, the illuminated plurality of data blocks constituting one encoded word; means for moving the media relative to the illuminating means along the path so that successive linearly-arrayed pluralities of data blocks are successively illuminated; optical transform means response to the illuminating of each successive one of the linearly-arrayed pluralities of data blocks for transforming in parallel, as each such linearly-arrayed plurality of data blocks is successively illuminated, the mathematically one-dimensional holograms that constitute each such illuminated plurality of data blocks into a light beam upon which a word is encoded in parallel.
Claim 14
Dependent Claim
190 words
A parallel readout optical memory comprising: a media optically encoded with a two-dimensionally arrayed multiplicity of holograms, each of which holograms represents a set of data, a plurality of holograms being linearly arrayed in a first direction of the media, this linearly-arrayed plurality representing plural sets of data which plural sets collectively constitute a universal set of data, a number of linearly-arrayed pluralities of holograms being positionally distributed along a path, one linearly-arrayed plurality of holograms to the next; illuminating means for simultaneously illuminating one entire linearly-arrayed plurality of holograms encoded in the media, the illuminated plurality of holograms collectively constituting the universal set of data; means for moving the media relative to the illuminating means along the path so that successive linearly-arrayed pluralities of holograms are successively illuminated; optical transform means response to the illuminating of each successive one of the linearly-arrayed pluralities of holograms for transforming in parallel, as each such linearly-arrayed plurality of holograms is successively illuminated, all the holograms that are within each such illuminated plurality of holograms into a light beam upon which the set of data is encoded in parallel, and in two dimensions.
Claim 15
Dependent Claim
190 words
A parallel readout optical memory comprising: a media optically encoded with a two-dimensionally arrayed multiplicity of holograms, each of which holograms represents a set of data, a plurality of holograms being linearly arrayed in a first direction of the media, this linearly-arrayed plurality representing plural sets of data which plural sets collectively constitute a universal set of data, a number of linearly-arrayed pluralities of holograms being positionally distributed along a path, one linearly-arrayed plurality of holograms to the next; illuminating means for simultaneously illuminating one entire linearly-arrayed plurality of holograms encoded in the media, the illuminated plurality of holograms collectively constituting the universal set of data; means for moving the media relative to the illuminating means along the path so that successive linearly-arrayed pluralities of holograms are successively illuminated; optical transform means response to the illuminating of each successive one of the linearly-arrayed pluralities of holograms for transforming in parallel, as each such linearly-arrayed plurality of holograms is successively illuminated, all the holograms that are within each such illuminated plurality of holograms into a light beam upon which the set of data is encoded in parallel, and in two dimensions.
Claim 16
Dependent Claim
35 words
The parallel-readout optical memory according to claim 12 wherein the optical media comprises: an optical disk; and wherein the means for moving comprises: rotational means for rotating the optical disk relative to the illuminating means.
Claim 17
Dependent Claim
53 words
The parallel-readout optical memory according to claim 12 wherein the optical media is encoded on its surface, the number of linearly-arrayed pluralities of holograms being positionally distributed along a path that is upon the surface; and wherein the means for moving moves the media relative to the illuminating means along the surface path.
Claim 18
Dependent Claim
155 words
The parallel-readout optical memory according to claim 12 wherein the optical media is optically encoded with a two-dimensionally arrayed multiplicity of holograms each of which holograms represents a mathematically one-dimensional strip of image data, the plurality of such holograms linearly arrayed in a first direction of the media representing plural mathematically one-dimensional strips of image data which plural strips collectively constitute a two-dimensional image; wherein the illuminating means is simultaneously illuminating one entire linearly-arrayed plurality of holograms encoded in the media, which illuminated plurality of holograms collectively constitute the two-dimensional image; and wherein the optical transform means is responsive to the illuminating of each successive one of the linearly-arrayed pluralities of holograms for transforming in parallel, as each such linearly-arrayed plurality of holograms is successively illuminated, all the holograms that are within each such illuminated plurality of holograms into a light beam upon which the two-dimensional image is encoded in parallel, and in two dimensions.
Claim 19
Dependent Claim
112 words
An optical medium recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms wherein each of the holograms encodes a set of data, wherein a first plurality of such mathematically one-dimensional holograms are linearly arrayed substantially along a first axis of the optical medium, this first plurality of first-axis-arrayed holograms collectively encoding a first plurality of sets of data, which first plurality of data sets collectively constitute a universal data set, wherein second plurality of such linearly-arrayed first pluralities of holograms are distributed along another, second, axis of the medium which second axis intercepts the first axis; wherein the optical medium is recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms.
Claim 20
Dependent Claim
112 words
An optical medium recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms wherein each of the holograms encodes a set of data, wherein a first plurality of such mathematically one-dimensional holograms are linearly arrayed substantially along a first axis of the optical medium, this first plurality of first-axis-arrayed holograms collectively encoding a first plurality of sets of data, which first plurality of data sets collectively constitute a universal data set, wherein second plurality of such linearly-arrayed first pluralities of holograms are distributed along another, second, axis of the medium which second axis intercepts the first axis; wherein the optical medium is recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms.
Claim 21
Dependent Claim
91 words
The optical medium according to claim 16 wherein each of the holograms encodes a mathematically one-dimensional strip of image data, wherein the first plurality of such holograms that are linearly arrayed substantially along the first axis of the medium encode a first plurality of strips of image data, which first plurality of image data strips collectively encode the data of a two-dimensional image, wherein the second plurality of such linearly-arrayed first pluralities of holograms as are distributed along the second axis of the medium encode a second plurality of two-dimensional images.
Claim 22
Dependent Claim
34 words
The optical medium according to claim 16 wherein the holograms are digitally encoded; and wherein the optical medium further comprises: surface features detectable as binary bits by which features the digitally-encoded holograms are recorded.
Claim 23
Dependent Claim
56 words
The optical medium recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms according to claim 16 wherein the first plurality of holograms are linearly arrayed substantially along a radius of an optical disk; and wherein the second plurality of such radially-linearly-arrayed first pluralities of holograms are distributed in an annulus circumferentially around the optical disk.
Claim 24
Dependent Claim
73 words
The optical medium recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms according to claim 16 wherein the first plurality of holograms are linearly arrayed substantially transversely to a longitudinal axis of an optical tape; and wherein the second plurality of such axially-transversely-linearly-arrayed first pluralities of holograms are distributed along the longitudinal axis of the optical tape; wherein the optical tape is recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms.
Claim 25
Dependent Claim
57 words
The optical tape recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms according to claim 20 wherein each of the mathematically one-dimensional holograms is elongate in its one dimension along a hologram axis: wherein the hologram axis of each of the first plurality of holograms is substantially parallel to the longitudinal axis of the optical tape.
Claim 26
Dependent Claim
56 words
The optical tape recorded with a two-dimensionally arrayed multiplicity of mathematically one-dimensional holograms according to claim 20 wherein each of the mathematically one-dimensional holograms is elongate in its one dimension along a hologram axis: wherein the hologram axis of each of the plurality of holograms is substantially perpendicular to the longitudinal axis of the optical tape.
Claim 27
Independent Claim
105 words
A method for parallel readout of an optical medium, the method comprising: encoding an optical medium with a multiplicity of mathematically one-dimensional holograms so that the holograms line along a single line, each of the multiplicity of holograms is a transformed slice of a single two-dimensional image, and the complete multiplicity of the holograms are in aggregate a sliced transformation of the entire two-dimensional image; illuminating the multiplicity of holograms simultaneously, and along the line; optically transforming the simultaneously-illuminated multiplicity of mathematically one-dimensional holograms in order to reconstitute, as a parallel encoding of a wavefront of a light beam, a replica of the two-dimensional image.
Claim 28
Independent Claim
105 words
A method for parallel readout of an optical medium, the method comprising: encoding an optical medium with a multiplicity of mathematically one-dimensional holograms so that the holograms line along a single line, each of the multiplicity of holograms is a transformed slice of a single two-dimensional image, and the complete multiplicity of the holograms are in aggregate a sliced transformation of the entire two-dimensional image; illuminating the multiplicity of holograms simultaneously, and along the line; optically transforming the simultaneously-illuminated multiplicity of mathematically one-dimensional holograms in order to reconstitute, as a parallel encoding of a wavefront of a light beam, a replica of the two-dimensional image.
Claim 29
Dependent Claim
40 words
The optical medium parallel readout method according to claim 23 wherein the encoding comprises: generating in a computer a multiplicity of mathematically one-dimensional Fourier transform holograms; and impressing the multiplicity of computer-generated mathematically one-dimensional Fourier-transform holograms upon the optical medium.
Claim 30
Dependent Claim
44 words
The optical medium parallel readout method according to claim 23 wherein the encoding comprises: generating in a computer a multiplicity of mathematically one-dimensional non-Fourier transform holograms by an iterative algorithm; and impressing the multiplicity of computer-generated mathematically one-dimensional non-Fourier-transform holograms upon the optical medium.
Claim 31
Dependent Claim
111 words
The optical medium parallel readout method according to the claim 23 wherein the encoding comprises: embedding a first multiplicity of pixels of a single image slice within an array of a second multiplicity of elements; transforming by a mathematical transform the arrayed second multiplicity of elements to produce a multiplicity of sample values; quantizing on a grey scale the multiplicity of sample values each into (n+1) grey levels contained with an n-bit pattern; replicating the multiplicity of n-bit patterns to produce a mathematically one-dimensional hologram having a dimension of 2 multiplicities of elements by n-bits each element; and impressing the multiplicity of computer-generated mathematically one-dimensional Fourier-transform holograms upon the optical medium.
Claim 32
Dependent Claim
88 words
The optical medium parallel readout method according to claim 26 wherein the embedding is of 128 pixels of a single image slice within an array of 512 elements; wherein the transforming by mathematical transform is of the 512 elements to produce 512 sample values; wherein the quantizing is of 512 sample values each into 5 grey levels contained with a 4-bit pattern; and wherein the replicating is of the 512 4-bit patterns to produce a mathematically one-dimensional hologram having a dimension of 1024 elements by 4-bits each element.
Claim 33
Dependent Claim
31 words
The optical medium parallel readout method according to claim 23 applied to produce an optical disk having an active surface encoded with a multiplicity of mathematically one-dimensional non-Fourier transform computer-generated holograms.
Claim 34
Dependent Claim
19 words
The optical medium parallel readout method according to claim 26 wherein the transforming comprises: Fourier transforming in a computer.
Claim 35
Dependent Claim
25 words
The optical medium parallel readout method according to claim 29 wherein the encoding comprises: Fourier transforming in a computer by execution of an iterative algorithm.
Claim 36
Dependent Claim
34 words
The optical medium parallel readout method according to claim 23 applied to an optical disk, wherein the encoding comprises: impressing an optical disk with the multiplicity of mathematically one-dimensional holograms along a straight line.
Claim 37
Dependent Claim
33 words
The optical disk parallel readout method according to claim 31 wherein the impressing of the optical disk with the multiplicity of mathematically one-dimensional holograms is along a straight line that is substantially radial.
Claim 38
Dependent Claim
36 words
The optical disk parallel readout method according to claim 32 wherein the impressing of the active medium of the optical disk is with the multiplicity of mathematically one-dimensional holograms located substantially contiguously along the straight line.
Claim 39
Dependent Claim
20 words
The optical disk medium parallel readout method according to claim 23 wherein the illuminating comprises: illuminating with collimated laser light.
Claim 40
Dependent Claim
55 words
The optical medium parallel readout method according to claim 23 wherein the optically transforming comprises: Fourier-transforming in a first refractive cylindrical lens the simultaneously-illuminated multiplicity of mathematically one-dimensional holograms in order to reconstitute a two-dimensional image; and imaging in a second refractive cylindrical lens the reconstituted two-dimensional image into the replica of the two-dimensional image.
Claim 41
Dependent Claim
55 words
The optical medium parallel readout method according to claim 23 wherein the optically transforming comprises: Fourier-transforming in a first diffractive cylindrical lens the simultaneously-illuminated multiplicity of mathematically one-dimensional holograms in order to reconstitute a two-dimensional image; and imaging in a second diffractive cylindrical lens the reconstituted two-dimensional image into the replica of the two-dimensional image.
Claim 42
Dependent Claim
41 words
The optical medium parallel readout method according to claim 23 wherein the optically transforming comprises: Fourier-transforming and imaging in a hybrid refractive diffractive lens the simultaneously-illuminated multiplicity of mathematically one-dimensional holograms in order to reconstitute the replica of the two-dimensional image.
Claim 43
Independent Claim
96 words
A method for parallel readout of an optical medium that is encoded with a plurality of mathematically one-dimensional holograms so that the plurality of holograms lie along a single line, each of the plurality of holograms encodes one set of data, and the complete plurality of the holograms encode, in aggregate, a universal set of data, the method comprising: simultaneously illuminating the plurality of holograms along the line; and optically transforming the simultaneously-illuminated plurality of holograms in order to reconstitute, as a parallel encoding of a wavefront of a light beam, the universal set of data.
Claim 44
Independent Claim
96 words
A method for parallel readout of an optical medium that is encoded with a plurality of mathematically one-dimensional holograms so that the plurality of holograms lie along a single line, each of the plurality of holograms encodes one set of data, and the complete plurality of the holograms encode, in aggregate, a universal set of data, the method comprising: simultaneously illuminating the plurality of holograms along the line; and optically transforming the simultaneously-illuminated plurality of holograms in order to reconstitute, as a parallel encoding of a wavefront of a light beam, the universal set of data.
Claim 45
Dependent Claim
88 words
The method for the parallel readout of an optical medium according to claim 38 wherein each of the plurality of holograms lying along the single line is a transformed slice of a single two-dimensional image; wherein the complete multiplicity of the holograms are in aggregate a sliced transformation of the entire two-dimensional image; and wherein the optically transforming of the simultaneously-illuminated multiplicity of mathematically one-dimensional holograms is in order to reconstitute, as a parallel encoding of a wavefront of a light beam, a replica of the two-dimensional image.
Claim 46
Independent Claim
218 words
A method of encoding holographic information representing a two-dimensional pixel image upon an optical disk, the method comprising: dividing the pixel image into A mathematically one-dimensional slices of B pixel bits each; embedding, with a specific shift related to its order within the image, each mathematically one-dimensional slice of B pixels into a mathematically one-dimensional array of C elements all of which are initially zero; multiplying each array of C elements by a random phase; transforming by a mathematically transform each array of C phase-multiplied elements to produce an array of C sample values, extracting a real part of each mathematically transformed array and adding a bias equal to its minimum as proves necessary in order to make all C sample values to be real positive numbers; quantizing on a grey scale of D+1 levels the C sample values each into C patterns of D bits each by application of a mathematical density modulation algorithm; replicating the C patterns of D bits each to produce a data block of 2×C cells of D bits each, this data block being a mathematically one-dimensional hologram; and recording each data block in a successive position, circumferentially positionally shifted one to the next, radially along the disk's active surface until A data blocks fit radially within an annulus of the optical disk.
Claim 47
Independent Claim
218 words
A method of encoding holographic information representing a two-dimensional pixel image upon an optical disk, the method comprising: dividing the pixel image into A mathematically one-dimensional slices of B pixel bits each; embedding, with a specific shift related to its order within the image, each mathematically one-dimensional slice of B pixels into a mathematically one-dimensional array of C elements all of which are initially zero; multiplying each array of C elements by a random phase; transforming by a mathematically transform each array of C phase-multiplied elements to produce an array of C sample values, extracting a real part of each mathematically transformed array and adding a bias equal to its minimum as proves necessary in order to make all C sample values to be real positive numbers; quantizing on a grey scale of D+1 levels the C sample values each into C patterns of D bits each by application of a mathematical density modulation algorithm; replicating the C patterns of D bits each to produce a data block of 2×C cells of D bits each, this data block being a mathematically one-dimensional hologram; and recording each data block in a successive position, circumferentially positionally shifted one to the next, radially along the disk's active surface until A data blocks fit radially within an annulus of the optical disk.
Claim 48
Dependent Claim
25 words
The method of encoding holographic information representing a two-dimensional pixel image upon an optical disk according to claim 40 wherein the transforming comprises: Fourier transforming.
Claim 49
Dependent Claim
32 words
The method of encoding holographic information representing a two-dimensional pixel image upon an optical disk according to claim 40 wherein the Fourier transforming comprises: Fourier transforming with a Fast Fourier Transform (FFT).
Claim 50
Dependent Claim
44 words
The method of encoding holographic information representing a two-dimensional pixel image upon an optical disk according to claim 40 wherein the Fourier transforming comprises: Fourier transforming by an iterative execution of the Direct Binary Search (DBS) algorithm as adapted to the grey level quantizing.
Claim 51
Dependent Claim
196 words
The method of encoding holographic information representing a two-dimensional pixel image upon an optical disk according to claim 40 wherein the dividing of the pixel image is into 128 mathematically one-dimensional slices of 128 pixel bits each; wherein the embedding, with a specific shift related to its order within the image, is of 128 mathematically one-dimensional slices of 128 pixels each into a mathematically one-dimensional array of 512 elements all of which are initially zero; wherein the multiplying is of each array of 512 elements by a random phase; wherein the transforming by a mathematical transform is of each array of 512 phase-multiplied elements to produce an array of 512 sample values; wherein the quantizing of the 512 sample values is on a grey scale of 5 levels to produce 512 patterns of 4 bits each; wherein the replicating of the 512 patterns of 4 bits each produces a data block having 1024 cells of 4 bits each; and wherein the recording of each data block in a successive position, circumferentially positionally shifted one to the next, radially along the disk's active surface is until 128 data blocks fit a complete radius of the optical disk.
Claim 52
Dependent Claim
93 words
In a motionless-head parallel-readout optical system, a readout lens system for concurrently (i) Fourier-transforming a multiplicity of mathematically one-dimensional holograms aligned along a Y-axis and representing mathematically one-dimensional slices of a two-dimensional image, and (ii) imaging along an X-axis the mathematically one-dimensional holograms so Fourier-transformed in order to reconstitute the two-dimensional image, the readout lens system comprising: a first lens for performing a Fourier transform of the mathematically one-dimensional holograms aligned along the Y-axis direction; and a second lens for imaging the transformed holograms along an X-axis direction orthogonal to the Y-axis direction.
Claim 53
Dependent Claim
93 words
In a motionless-head parallel-readout optical system, a readout lens system for concurrently (i) Fourier-transforming a multiplicity of mathematically one-dimensional holograms aligned along a Y-axis and representing mathematically one-dimensional slices of a two-dimensional image, and (ii) imaging along an X-axis the mathematically one-dimensional holograms so Fourier-transformed in order to reconstitute the two-dimensional image, the readout lens system comprising: a first lens for performing a Fourier transform of the mathematically one-dimensional holograms aligned along the Y-axis direction; and a second lens for imaging the transformed holograms along an X-axis direction orthogonal to the Y-axis direction.
Claim 54
Dependent Claim
47 words
The readout lens system according to claim 45 wherein the first lens comprises: a first refractive cylindrical lens having a first positive focal length; and wherein the second lens comprises: a second refractive cylindrical lens having a second positive focal length different from the first focal length.
Claim 55
Dependent Claim
47 words
The readout lens system according to claim 45 wherein the first lens comprises: a first diffractive cylindrical lens having a first positive focal length; and wherein the second lens comprises: a second diffractive cylindrical lens having a second positive focal length different from the first focal length.
Claim 56
Dependent Claim
71 words
In a motionless-head parallel-readout optical system, a readout lens system for simultaneously (i) Fourier-transforming a multiplicity of mathematically one-dimensional holograms aligned along a Y-axis and representing mathematically one-dimensional slices of a two-dimensional image, and (ii) imaging along an X-axis the mathematically one-dimensional holograms so Fourier-transformed in order to reconstitute the two-dimensional image, the readout lens system comprising: an orthogonal cylindrical diffractive optical lens for Fourier-transforming and imaging the mathematically one-dimensional holograms.
Claim 57
Dependent Claim
71 words
In a motionless-head parallel-readout optical system, a readout lens system for simultaneously (i) Fourier-transforming a multiplicity of mathematically one-dimensional holograms aligned along a Y-axis and representing mathematically one-dimensional slices of a two-dimensional image, and (ii) imaging along an X-axis the mathematically one-dimensional holograms so Fourier-transformed in order to reconstitute the two-dimensional image, the readout lens system comprising: an orthogonal cylindrical diffractive optical lens for Fourier-transforming and imaging the mathematically one-dimensional holograms.
Claim 58
Dependent Claim
18 words
The readout lens system according to claim 48 wherein the readout lens system further comprises: a refractive lens.
Claim 59
Dependent Claim
17 words
The hybrid lens according to claim 49 wherein the refractive lens comprises: a plano-convex spherical refractive lens.
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