US5758036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of improved digitized stereoscopic polarizing images
Assignee: Harvard University
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Filing: 1996-01-30
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Granted: 1998-05-26
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Expires: 2016-01-30
Abstract
Abstract This invention discloses a system for forming improved digitized stereoscopic polarizing images having reduced ghost images by utilizing digital imaging systems and ink jet printers. Stereoscopic polarizing images comprising a first polarizing sheet imprinted with a first image and a second polarizing sheets imprinted with a negative of the first image and a second image are stereoscopically aligned such that the negative of the first image reduces ghost images produced by the first image. The images in the first polarizing sheet and in the second polarizing sheet can be efficiently produced and modified using digital imaging systems and ink jet printer technology.
Inventors
- 👤 Julius J. Scarpetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:22
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2107; B41J11/00; B41J11/0015; B41J11/004; B41J3/00; B41J3/60; B41M; B41M3/00; B41M3/06; B41M5/00; B41M5/50; B41M5/52; G; G06; G06K; G06K15/00; B41M5/502; B41M5/508; B41M5/5227; B41M5/5236; B41M7/00; B41M7/0027
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
121 words
A method for reducing a ghost image observed when light passes through a digitized stereoscopic polarizing image having a first polarizing sheet imprinted with a first image and having a second polarizing sheet, the method comprising the steps of: forming a first ink pattern representative of a second image superimposed with a negative of the first image, applying the first ink pattern with an ink jet printer to the second polarizing sheet such that the second polarizing sheet is imprinted with the second image and the negative of the first image, and stereoscopically aligning the first polarizing sheet and the second polarizing sheet so that the ghost image produced by incompletely polarized light passing through the first polarizing sheet is reduced.
Claim 2
Independent Claim
121 words
A method for reducing a ghost image observed when light passes through a digitized stereoscopic polarizing image having a first polarizing sheet imprinted with a first image and having a second polarizing sheet, the method comprising the steps of: forming a first ink pattern representative of a second image superimposed with a negative of the first image, applying the first ink pattern with an ink jet printer to the second polarizing sheet such that the second polarizing sheet is imprinted with the second image and the negative of the first image, and stereoscopically aligning the first polarizing sheet and the second polarizing sheet so that the ghost image produced by incompletely polarized light passing through the first polarizing sheet is reduced.
Claim 3
Dependent Claim
38 words
A method in accordance with claim 1 wherein said forming step further comprises adjusting the pixel density of the negative image such that the negative image is well matched with a ghost image produced by the first image.
Claim 4
Dependent Claim
42 words
A method in accordance with claim 2 wherein said forming step further comprises adjusting the pixel density of the negative image such that the intensity of the negative image substantially equals the intensity of the ghost image produced by the first image.
Claim 5
Dependent Claim
29 words
A method in accordance with claim 1 wherein said forming step further comprises increasing the pixel density of the second image so that the ghost image is substantially reduced.
Claim 6
Dependent Claim
30 words
A method in accordance with claim 4 wherein the pixel density of the second image is only adjusted in those areas where the ghost image and the second image overlap.
Claim 7
Dependent Claim
22 words
A method in accordance with claim 1 wherein said forming step further comprises reducing the brightness and contrast of the negative image.
Claim 8
Dependent Claim
27 words
A method in accordance with claim 1, further comprising the step of coating the second polarizing sheet with a viscous first layer prior to the applying step.
Claim 9
Dependent Claim
74 words
A method in accordance with claim 1, wherein the forming step further comprises: generating a first digital data set representative of the negative of the first image and a second digital data set representative of the second image, forming a third digital data set representative of the superposition of the negative of the first image and the second image, and wherein the third digital data set is used to form the first ink pattern.
Claim 10
Independent Claim
187 words
An apparatus for forming a digitized stereoscopic polarizing image with a reduced ghost image from a first image of an object and a second image of the object, the digitized stereoscopic polarizing image having a first polarizing sheet imprinted with the first image and having a second polarizing sheet, the apparatus comprising: A) a digital memory element for storing and retrieving a first data set representative of the first image and a second data set representative of the second image, B) a data processing element coupled with the digital memory element, the data processing element comprising: i) first processing means for forming a negative data set representative of the negative of the first image, ii) second processing means for forming an output data set representative of the negative of the first image superimposed with the second image C) printing means coupled with the data processing element for printing the output data set onto the second polarizing sheet such that the second polarizing sheet, when stereoscopically aligned with the first polarizing sheet, reduces the ghost image created by the incompletely polarized light passing through the first polarizing sheet.
Claim 11
Independent Claim
187 words
An apparatus for forming a digitized stereoscopic polarizing image with a reduced ghost image from a first image of an object and a second image of the object, the digitized stereoscopic polarizing image having a first polarizing sheet imprinted with the first image and having a second polarizing sheet, the apparatus comprising: A) a digital memory element for storing and retrieving a first data set representative of the first image and a second data set representative of the second image, B) a data processing element coupled with the digital memory element, the data processing element comprising: i) first processing means for forming a negative data set representative of the negative of the first image, ii) second processing means for forming an output data set representative of the negative of the first image superimposed with the second image C) printing means coupled with the data processing element for printing the output data set onto the second polarizing sheet such that the second polarizing sheet, when stereoscopically aligned with the first polarizing sheet, reduces the ghost image created by the incompletely polarized light passing through the first polarizing sheet.
Claim 12
Dependent Claim
15 words
An apparatus according to claim 9, wherein the printing means is an ink jet printer.
Claim 13
Dependent Claim
21 words
An apparatus according to claim 9, further comprising means for stereoscopically aligning a first polarizing sheet and a second polarizing sheet.
Claim 14
Dependent Claim
25 words
An apparatus according to claim 9, wherein the data processing element further comprises third processing means for adjusting the pixel density of the negative image.
Claim 15
Dependent Claim
25 words
An apparatus according to claim 9, wherein the data processing element further comprises fourth processing means for adjusting the pixel density of the second image.
Claim 16
Dependent Claim
22 words
An apparatus according to claim 13, further comprising fifth processing means for identifying where the first image and the second image overlap.
Claim 17
Dependent Claim
26 words
An apparatus according to claim 9, wherein the data processing element further comprises sixth processing means for modifying the brightness and contrast of the negative image.
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |