GB1564733A - Arrangement for extending photosensor array resolution - Google Patents
Arrangement for extending photosensor array resolution Download PDFInfo
- Publication number
- GB1564733A GB1564733A GB44156/76A GB4415676A GB1564733A GB 1564733 A GB1564733 A GB 1564733A GB 44156/76 A GB44156/76 A GB 44156/76A GB 4415676 A GB4415676 A GB 4415676A GB 1564733 A GB1564733 A GB 1564733A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- prism
- photosensor
- arrays
- beam splitter
- 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.)
- Expired
Links
- 238000003491 array Methods 0.000 claims description 41
- 230000003287 optical effect Effects 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 claims description 5
- 230000001902 propagating effect Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0972—Prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1066—Beam splitting or combining systems for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/148—Charge coupled imagers
- H01L27/14825—Linear CCD imagers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02325—Optical elements or arrangements associated with the device the optical elements not being integrated nor being directly associated with the device
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
- H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
- H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
- H04N1/1934—Combination of arrays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
- H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
- H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
- H04N1/1935—Optical means for mapping the whole or part of a scanned line onto the array
- H04N1/1937—Optical means for mapping the whole or part of a scanned line onto the array using a reflecting element, e.g. a mirror or a prism
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/40—Extracting pixel data from image sensors by controlling scanning circuits, e.g. by modifying the number of pixels sampled or to be sampled
- H04N25/41—Extracting pixel data from a plurality of image sensors simultaneously picking up an image, e.g. for increasing the field of view by combining the outputs of a plurality of sensors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Heads (AREA)
Description
(54) ARRANGEMENT FOR EXTENDING PHOTOSENSOR
ARRAY RESOLUTION
(71) We, XEROX CORPORATION of
Rochester, New York State, United States of America, a Body Corporate organized under the laws of the State of New York,
United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to linear image sensors in which light propagating from an object and incident imagewise on photosensor arrays signals an imagewise electrical output.
Large arrays of solid-state photosensors are currently used in applications such as video cameras and document scanners. The semiconductor fabrication techniques currently employed to manufacture these arrays limit the maximum physical dimension to approximately one inch. There are further limitations, both physical and electrical, which establish a minimum center-to-center distance between adjacent photosensor elements. Thus, in a single array, there exists a maximum number of photosensor elements which can be practically fabricated. Since the image resolution achievable with such an array is proportional to the number of photosensor elements in the array, there are potential scanning applications where the available number of photosensors in one array is insufficient to produce the desired image resolution. To overcome this difficulty, it is common practice to use several photosensor arrays such that the total number of photosensor elements is adequate to achieve the desired image resolution.
One form of CCD arrays now being produced is limited to 256 individual photosensors in a strip or linear array. For scanning an object, for example a nine-inch wide document, and in order to resolve five line pairs per millimeter, at least 10 photosensor elements per miliimeter are necessary. This requires 254 elements per inch. Thus, nine of the 256 element arrays must be placed in a line.
It is not readily feasible to fabricate these photosensor arrays such that the end elements of two successive arrays can be physically positioned so as to create an unbroken line of photosensor elements extending across a page.
According to the invention there is provided an image sensing system comprising: a plurality of discrete photosensor elements arranged in a first linear array and separated by a center-tocenter spacing d; a plurality of discrete photosensor elements arranged in a second linear and separated by a center-to-center spacing d, said first and second arrays of photosensor elements being disposed in a common image plane; a beam splitter disposed in an optical path to said image plane; a reflector disposed in each of the divided optical paths between said beam splitter and said image plane, said reflectors disposed in mutually inward facing relationship at an angle bisected by said beam splitter; said first and second arrays of photosensor elements being linearly offset relative to each other by an amount d/2 so as to optically double the spatial density of said photosensor elements in the direction of offset for increased resolution of image sensing by said elements.
For a better understanding of this invention, reference is made to the following more details description of an exemplary embodiment, given in connection with the accompanying drawings, in which: Figure 1 is a schematic diagram of a plurality of staggered arrays of photosensor elements, as practiced in the prior art;
Figure 2 is a schematic representation of another arrangement used in the prior art to image an original object onto a plurality of arrays of photosensor elements;
Figure 3 is a schematic representation of yet another prior art approach to imaging an original object onto a plurality of arrays of photosensor elements;
Figure 4 is a schematic diagram similar to
Figure 3;
Figure 5 is a schematic representation of a plurality of arrays of photosensor elements optically superposed at an image plane; and
Figure 6 is an optical diagram of an arrangement according to the present invention to optically superpose offset linear arrays of photosensors.
To illustrate the advantages of the present invention, the prior art will first be described. In one commercially used method, as represented in Figure 1, several arrays 2a, 2b, 2c...2n of photosensor elements are arranged side-by-side in a staggered fashion. Each array 2 is composed of a plurality of individual photosensor elements 4 disposed relative to each other at a certain center-to-center distance along a line. The first array 2a is offset from the second array 2b which in turn is offset from the third array 2c and so on alternately to the last array 2n. Alternate arrays 2a,2c...
are arranged in one line 6 and alternate arrays 26 .... . 2n are arranged along a second line 8. The staggering of these alternate arrays is necessary since the last photosensor element 4 of one array cannot be brought into sufficiently close proximity to the first photosensor element 4 of the next array because of physical or mechanical limitations. A separate lens, or lens/beam splitter combination, not shown, is used to image an appropriate.portion of the object at each array. This prior art system requires a difficult and expensive alignment of lenses and photosensor arrays.
Referring to Figure 2, another prior art multiple lens arrangement is represented, without staggering of the photosensor arrays. In this case, projection lenses 14 are used at a magnification of less than unity between an object 0 at object plane 10 and photosensor array 2 at image plane 12. Due to the image reduction, adjacent arrays 2a, 2b, etc. are not required to be packed, optically or otherwise, in a continuous line.
This arrangement requires precise alignment of each of the several lenses.
Referring to Figure 3, another arrangement is shown which includes a beam splitter 16 in the optical path between object plane 10 and image plane 12 to produce twin images of the object plane with one lens 14. In this prior art, the second array 2b in image plane 12b is placed such that its first element is optically adjacent the last element of the first array 2a in image plane 12a, i.e. arrays 2a and 2b are optically placed end-to-end. Thus, the arrays 2a and 2b are optically disposed along the same line of image information without physical
interference. In this arrangement, however,
at least 500/ of the light from the object is
lost at the image plane.
Figure 4 shows an arrangement which
eliminates or reduces the difficulties
described in connection with Figures 1 to 3
but which does not lie within the present
invention. As in Figure 3, the object 0 is
located at object plane 10 and is imaged by a
projection lens 14 at image plane 12. A
beam splitter 16 divides the image
propagating light so that image plane 12 is
optically split into twin image planes 12a
and 12b. In this arrangement, unlike Figure
3, photosensor arrays 2a and 2b extend
along substantially the same line of image
information, except that photosensor array
2b is shifted along this line, relative to array
2a, by one half the center-to-center spacing
d of the individual photosensor elements 4.
Thus, the centers of the photosensor
elements of array 2a effectively lie on the
same line of image information as the
centers of the photosensor elements of array
2b, but are slightly displaced so as to be
located midway between the centers of the
elements of array 2b.
Figure 5 illustrates the effective optical
superposition of photosensor arrays 2a and
2b and their individual photosensing
elements 4. The elements of array 2a are
represented here in solid lines and their
centers indicated by x, and the elements of
array 2b are represented in dashed lines and
their centers indicated by o. The resultant
effective center-to-center spacing of
photosensor elements 4 is d/2, with a
permissible individual aperture width w
ranging from 0 to d.
There are several advantages to the
arrangement described. First, it offers the
alignment simplicity of the beam splitter
technique while at the same time using
substantially 1000 of the light from the
object. Secondly, effective resolution is
easily shown by the sampling theorem to
increase from l/2d cycles per unit length for
one array to l/d cycles per unit length for
the two combined arrays. Furthermore, the
maximum readout rate is double with
respect to the maximum for any one array.
Additional modifications to aperture
geometry are possible with this arrangement
which can substantially improve
performance over existing techniques. It is
recognized from sampling theorem
considerations that the optimum width of
each sensor element should be larger than
the effective center-to-center spacing of
these elements. With the superposed
aperture arrangement described above, the
effective center-to-center spacing is d/2
while the maximum single aperture width is
d. With a non-superposed arrangement, of course, the aperture width cannot exceed center-to-center spacing, or in other words, center-to-center spacing is always as large as or larger than the aperture.
The optical superposition feature has been described with the system in a static condition, that is, without reference to any scanning movement in the system. A useful scanning system employing this feature might take any of several forms. Examples of these are: a) stationary objects and optics with scanning photosensor elements; b) moving object with stationary optics and photosensor elements; c) stationary object with rotating mirrors in the optical path and stationary optics and photosensor elements; d) stationary object, optics and photosensor elements with rotating prism beam splitter in the optical path.
Referring now to Figure 6, an object plane is represented at 100 and an image plane at 120, with an optical axis 140 extending therebetween. A projection lens
160 is situated so as to project an image of an object line 0 from the object plane 100 to the image plane 120. At the image plane
120, first and second photosensor arrays,
20a and 20b, are represented in end view
and are mounted on a suitable support or
substrate not referenced. The photosensor
arrays 20a and 20b are linearly oriented
normal to the plane of the diagram as is the
object line 0.
A prism 200, sometimes denominated a
Koster's prism, is disposed in the optical
axis 14 between the object plane 10 and the
image plane 12. The Koster's prism 20
consists of two 306090 prisms 200a and
200b cemented as shown to form an
equiangular prism. The interface 220
between prism elements 200a and 200b is a
beam splitter, 50 /" transmissive and 50%
reflective of incident light.
Light propagating along the optical axis
14 of the system and incident on the beam
splitter surface 22 is 50% transmitted and
50% reflected. The light transmitted at
beam splitter 220 is totally internally
reflected at 30 and passes out of the prism at
50 to form an image at I which represents
one image of object line 0 at image plane
120. The light reflected at beam splitter 22 is
totally internally reflected at 70 and passes
out of the prism at 90 to form an image I'
which represents a second image of object
line 0 at image plane 120.
In the Koster's prism 200 the optical path 10--3e5I is equal in length to optical
path 1--7900-I'.
It will be appreciated that the linear
object 0 has been imaged by means of the present optical system in twin image lines I and 1'. By placing the linear arrays of photosensors 20a and 20b coincident with these image lines, a continuous image of a linear object 0 can be sensed. The arrays 20a and 20b in Figure 6 are linearly offset by a spacing d/2 where d represents the centerto-center spacing of photosensor elements on a single array. The effect of this is optically to compact the individual photosensor elements.
It will be appreciated that by means of the novel optical technique disclosed herein, a plurality of photosensor arrays can be optically compacted for improved image resolution and further that by means of this arrangement, the entire imaging system can be placed on a single plane.
The foregoing description of an embodiment of this invention is given by way of illustration and not of limitation. The particular geometry of the disclosed prism is
not essential. Other prism geometries may be used. A cemented pair of 22+ 67+ 90" prisms is one example of such a prism which would work. A pair of 34"--56""-90" prisms is another example. A pair of 26:"-- 63+o90o is yet another.
WHAT WE CLAIM IS:
1. An image sensing system comprising:
a plurality of discrete photosensor elements arranged in a first linear array and separated by a center-to-center spacing d,
a plurality of discrete photosensor elements arranged in a second linear array and separated by a center-to-center spacing d
said first and second arrays of photosensor elements being disposed in a common image plane,
a beam splitter disposed in an optical path to said image plane,
a reflector disposed in each of the divided optical paths between said beam splitter and said image plane, said reflectors disposed in mutually inward facing relationship at an angle bisected by said beam splitter,
said first and second arrays of photosensor elements being linearly offset relative to each other by an amount d/2 so as to optically double the spatial density of said photosensor elements in the direction of offset for increased resolution of image sensing by said elements.
2. An optical system as claimed in Claim 1 in which said beam splitter is at the interface of a pair of contiguous prisms and said reflectors are internally reflecting faces of said prism.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (3)
- **WARNING** start of CLMS field may overlap end of DESC **.course, the aperture width cannot exceed center-to-center spacing, or in other words, center-to-center spacing is always as large as or larger than the aperture.The optical superposition feature has been described with the system in a static condition, that is, without reference to any scanning movement in the system. A useful scanning system employing this feature might take any of several forms. Examples of these are: a) stationary objects and optics with scanning photosensor elements; b) moving object with stationary optics and photosensor elements; c) stationary object with rotating mirrors in the optical path and stationary optics and photosensor elements; d) stationary object, optics and photosensor elements with rotating prism beam splitter in the optical path.Referring now to Figure 6, an object plane is represented at 100 and an image plane at 120, with an optical axis 140 extending therebetween. A projection lens160 is situated so as to project an image of an object line 0 from the object plane 100 to the image plane 120. At the image plane 120, first and second photosensor arrays, 20a and 20b, are represented in end view and are mounted on a suitable support or substrate not referenced. The photosensor arrays 20a and 20b are linearly oriented normal to the plane of the diagram as is the object line 0.A prism 200, sometimes denominated a Koster's prism, is disposed in the optical axis 14 between the object plane 10 and the image plane 12. The Koster's prism 20 consists of two 306090 prisms 200a and 200b cemented as shown to form an equiangular prism. The interface 220 between prism elements 200a and 200b is a beam splitter, 50 /" transmissive and 50% reflective of incident light.Light propagating along the optical axis14 of the system and incident on the beam splitter surface 22 is 50% transmitted and 50% reflected. The light transmitted at beam splitter 220 is totally internally reflected at 30 and passes out of the prism at50 to form an image at I which represents one image of object line 0 at image plane 120. The light reflected at beam splitter 22 is totally internally reflected at 70 and passes out of the prism at 90 to form an image I' which represents a second image of object line 0 at image plane 120.In the Koster's prism 200 the optical path 10--3e5I is equal in length to optical path 1--7900-I'.It will be appreciated that the linear object 0 has been imaged by means of the present optical system in twin image lines I and 1'. By placing the linear arrays of photosensors 20a and 20b coincident with these image lines, a continuous image of a linear object 0 can be sensed. The arrays 20a and 20b in Figure 6 are linearly offset by a spacing d/2 where d represents the centerto-center spacing of photosensor elements on a single array. The effect of this is optically to compact the individual photosensor elements.It will be appreciated that by means of the novel optical technique disclosed herein, a plurality of photosensor arrays can be optically compacted for improved image resolution and further that by means of this arrangement, the entire imaging system can be placed on a single plane.The foregoing description of an embodiment of this invention is given by way of illustration and not of limitation. The particular geometry of the disclosed prism is not essential. Other prism geometries may be used. A cemented pair of 22+ 67+ 90" prisms is one example of such a prism which would work. A pair of 34"--56""-90" prisms is another example. A pair of 26:"-- 63+o90o is yet another.WHAT WE CLAIM IS: 1. An image sensing system comprising: a plurality of discrete photosensor elements arranged in a first linear array and separated by a center-to-center spacing d, a plurality of discrete photosensor elements arranged in a second linear array and separated by a center-to-center spacing d said first and second arrays of photosensor elements being disposed in a common image plane, a beam splitter disposed in an optical path to said image plane, a reflector disposed in each of the divided optical paths between said beam splitter and said image plane, said reflectors disposed in mutually inward facing relationship at an angle bisected by said beam splitter, said first and second arrays of photosensor elements being linearly offset relative to each other by an amount d/2 so as to optically double the spatial density of said photosensor elements in the direction of offset for increased resolution of image sensing by said elements.
- 2. An optical system as claimed in Claim 1 in which said beam splitter is at the interface of a pair of contiguous prisms and said reflectors are internally reflecting faces of said prism.
- 3. An image sensing system substantiallyas hereinbefore described with reference to and as illustrated in Figure 6 in conjunction with Figure 5 of the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/627,499 US4009388A (en) | 1975-10-30 | 1975-10-30 | Arrangement for extending photosensor array resolution |
| US05/627,498 US4005285A (en) | 1975-10-30 | 1975-10-30 | Optical system for extending photosensor array resolution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1564733A true GB1564733A (en) | 1980-04-10 |
Family
ID=27090447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB44156/76A Expired GB1564733A (en) | 1975-10-30 | 1976-10-25 | Arrangement for extending photosensor array resolution |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5255422A (en) |
| DE (1) | DE2649918C2 (en) |
| FR (1) | FR2330228A1 (en) |
| GB (1) | GB1564733A (en) |
| NL (1) | NL7612004A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0060149A2 (en) * | 1981-01-14 | 1982-09-15 | Morton Nadler | Image scanning method and device |
| GB2157527A (en) * | 1984-02-28 | 1985-10-23 | Canon Kk | Facsimile apparatus |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54159809A (en) * | 1978-06-07 | 1979-12-18 | Canon Inc | Picture information reader |
| GB2048609B (en) * | 1979-03-30 | 1983-05-25 | Hitachi Electronics | Solid-state colour imaging camera |
| CH640989A5 (en) * | 1979-04-12 | 1984-01-31 | Gx Holding Ag | Method for electronic image transmission |
| DE2938224A1 (en) * | 1979-09-21 | 1981-04-09 | Siemens AG, 1000 Berlin und 8000 München | OPTICAL DEVICE FOR CONTACTLESS WRITING |
| DE2938301A1 (en) * | 1979-09-21 | 1981-04-09 | Siemens AG, 1000 Berlin und 8000 München | OPTICAL DEVICE FOR CONTACTLESS WRITING, IN PARTICULAR FOR FACSIMILE RETURN OF IMAGES AND TEXT |
| FR2484097A1 (en) * | 1980-06-06 | 1981-12-11 | Sfim | Aircraft optical displacement sensor for helmet sighting system - uses dihedral prisms to form images of source for linear photo detector to indicate movement of head of pilot |
| JPS5970077A (en) * | 1982-10-15 | 1984-04-20 | Toshiba Corp | Display device of picture input |
| DE3412451A1 (en) * | 1984-04-03 | 1985-10-10 | Siemens AG, 1000 Berlin und 8000 München | Electronic image transducer |
| JPS60247369A (en) * | 1984-05-23 | 1985-12-07 | Dainippon Screen Mfg Co Ltd | Method and device for improving resolution of array sensor |
| DE4123791C2 (en) * | 1991-07-18 | 1995-10-26 | Daimler Benz Aerospace Ag | Digital area camera with multiple optics |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1497357A (en) * | 1916-02-09 | 1924-06-10 | Technicolor Motion Picture | Method and system for producing a plurality of images |
| US1765882A (en) * | 1926-05-28 | 1930-06-24 | John Edward Thornton | Optical device for photographic, cinematographic, and other purposes |
| DE693783C (en) * | 1936-01-16 | 1940-07-18 | Technicolor Motion Picture | Beam splitting system for recording and reproducing multicolor images |
| US2641712A (en) * | 1951-07-13 | 1953-06-09 | Bell Telephone Labor Inc | Photoelectric device |
| US3285124A (en) * | 1964-10-26 | 1966-11-15 | Kollmorgen Corp | High precision pointing interferometer with modified kosters prism |
| US3526704A (en) * | 1965-11-09 | 1970-09-01 | Heller William C Jun | Method and apparatus for color printing and the like |
| US3555285A (en) * | 1966-04-29 | 1971-01-12 | Bunker Ramo | Coded arrangement of photocells mounted on rigid body to determine position thereof |
| DE2100046B2 (en) * | 1971-01-02 | 1974-03-21 | Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel | Arrangement for the ongoing determination of surface defects in web-shaped materials |
| US3717770A (en) * | 1971-08-02 | 1973-02-20 | Fairchild Camera Instr Co | High-density linear photosensor array |
| FR2155840B1 (en) * | 1971-10-11 | 1975-04-18 | Labo Electronique Physique | |
| US3814846A (en) * | 1972-01-20 | 1974-06-04 | Reticon Corp | High density photodetection array |
| JPS507546A (en) * | 1973-05-17 | 1975-01-25 | ||
| US3875401B1 (en) * | 1973-07-09 | 1994-02-01 | Honeywell Inc. | Focus detecting apparatus |
| JPS5654115B2 (en) * | 1974-03-29 | 1981-12-23 |
-
1976
- 1976-10-25 GB GB44156/76A patent/GB1564733A/en not_active Expired
- 1976-10-29 JP JP51130417A patent/JPS5255422A/en active Pending
- 1976-10-29 NL NL7612004A patent/NL7612004A/en not_active Application Discontinuation
- 1976-10-29 FR FR7632901A patent/FR2330228A1/en active Granted
- 1976-10-29 DE DE2649918A patent/DE2649918C2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0060149A2 (en) * | 1981-01-14 | 1982-09-15 | Morton Nadler | Image scanning method and device |
| EP0060149A3 (en) * | 1981-01-14 | 1983-03-16 | Morton Nadler | Image scanning method and device |
| GB2157527A (en) * | 1984-02-28 | 1985-10-23 | Canon Kk | Facsimile apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7612004A (en) | 1977-05-03 |
| JPS5255422A (en) | 1977-05-06 |
| FR2330228A1 (en) | 1977-05-27 |
| FR2330228B1 (en) | 1982-06-18 |
| DE2649918C2 (en) | 1985-05-09 |
| DE2649918A1 (en) | 1977-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4009388A (en) | Arrangement for extending photosensor array resolution | |
| US4005285A (en) | Optical system for extending photosensor array resolution | |
| US4272684A (en) | Optical beam-splitting arrangements on object side of a lens | |
| GB1564733A (en) | Arrangement for extending photosensor array resolution | |
| US4321628A (en) | Scanning apparatus | |
| US4823202A (en) | Optical beam-splitting arrangements on image side of a lens | |
| GB2250155A (en) | An imager with image microscanned over sensor array | |
| US4129358A (en) | Optical system for imaging an elongate object in rearranged sections | |
| US4512632A (en) | Original reading apparatus | |
| JPS6224984B2 (en) | ||
| JPH0563909A (en) | Color picture reader | |
| JPH03121655A (en) | Auxiliary illumination apparatus of docu- ment analyzer | |
| JP3258085B2 (en) | Line imaging device | |
| JP2859629B2 (en) | 1x imaging element | |
| JPS6019703B2 (en) | solid state image sensor array | |
| JP2564419B2 (en) | Optical length measuring device | |
| JPS5971040A (en) | Image forming device | |
| JPS6362941B2 (en) | ||
| JP2846328B2 (en) | 1x imaging element | |
| JPS6149610B2 (en) | ||
| JPS62260481A (en) | Television camera | |
| JPH0376463A (en) | Facsimile equipment | |
| JPH02260761A (en) | Image scanner | |
| JPS62147422A (en) | Image input device | |
| JPS6239817A (en) | Projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) |