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US3221600A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for forming and viewing color separation stereoscopic images

Assignee: Polaroid Corp
•
Filing: 1961-12-29
•
Granted: 1965-12-07
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Expires: 1981-12-29
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Abstract

No abstract record available.

Inventors

  • 👤 Edwin H Land
  • 👤 Nigel W Daw

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-10 01:25
CPC Classifications
G; G03; G03B; G03B35/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 420 words
A METHOD OF PRODUCING AND VIEWING COMPOSITE MULTICOLORED STEREOSCOPIC IMAGES OF A PHOTOGRAPHIC SUBJECT WHEREIN COLOR INTEGRITY IS MAINTAINED AND RETINAL RIVALRY IS SUBSTANTIALLY ELIMINATED THROUGH THE PROVISION OF A PREDETERMINED COLOR CONTENT AND CHOSEN DENSITIES OF A PLURALITY OF LEFT- AND RIGHT-EYE IMAGE COMPONENTS, SAID METHOD COMPRISING THE STEPS OF EXPOSING SUCCESSIVELY TO SAID SUBJECT FROM A FIRST STEREOSCOPIC LOCATION EACH FILM OF A FIRST PAIR OF PHOTOSENSITIVE FILMS OF GIVEN SPECTRAL SENSITIZATION CHARACTERISTICS THROUGH A PLURALITY OF VARIOUSLY-COLORED TAKING FILTERS AT EXPOSURE TIMES WHICH ARE SELECED FRACTIONS OF THE NORMAL TIMES THEREFOR RELATIVE TO SAID FILMS, THE COLORS OF SAID FILTERS AND THE EXPOSURE TIMES BEING AT LEAST IN PART RELATIVELY DIFFERENT FOR EACH OF THE FILMS OF SAID PAIR, EXPOSING SUCCESSIVELY TO SAID SUBJECT FROM A SECOND STEREOSCOPIC LOCATION EACH FILM OF A SECOND PAIR OF PHOTOSENSITIVES FILMS OF GIVEN SPECTRAL SENSITIZATION CHARACTERISTICS THROUGH A PLURALITY OF GIVEN COLORED TAKING FILTERS AT EXPOSURE TIMES WHICH ARE SELECTED FRACTIONS OF THE NORMAL TIMES THEREFOR RELATIVE TO SAID FILMS, THE COLORS OF SAID FILTERS AND THE EXPOSURE TIMES AGAIN BEING AT LEAST IN PART RELATIELY DIFFERENT FOR EACH OF THE FILMS OF SAID SECOND PAIR AND ALSO AT LEAST IN PART DIFFERENT FROM THE COLORS OF SAID FILTER AND EXPOSURE TIMES EMPLOYED WITH SAID FIRST PAIR OF FILMS, PRODUCING FIRST AND SECOND PAIRS OF BLACKAND-WHITE COLOR-SEPARATION RECORDS REPRESENTATIVE IN IMAGE CONTENT OF SAID FIRST AND SECOND STEREOSCOPIC LOCATION FROM SAID FIRST AND SECOND PAIRS OF FILMS, RESPECTIVELY, BY ANY SUITABLE METHOD, SAID PAIRS INCORPORATING EQUALLY BALANCED DENSITIES OF SAID IMAGE CONTENT BY REASON OF SAID FILM SENSITIZATION, TAKING FILTERS AND FRACTIONAL EXPOSURES, POSITIONING EACH RECORD OF SAID PAIRS IN AN INDIVIDUAL PATH OF LIGHT CONVERGING TO SUBSTANTIAL SUPERIMPOSITION AT AN IMAGE PLANE, PLACING A COLORED PROJECTION FILTER HAVING A RELATIVELY DIFFERENT TRANSMITTANCE IN EACH SAID PATH OF LIGHT SO THAT A PAIR OF FILTERS COMPOSED OF RELATIVELY LONG AND SHORT WAVELENGTH BAND TRANSMISSION FILTERS, IS POSITIONED IN THE PATHS IDENTIFIED WITH EACH OF SAID PAIRS OF COLORSEPARATION RECORDS, ONE PAIR OF SAID PROJECTION FILTERS DISTINGUISHING FROM THE OTHER IN WAVELENGTH CHARACTERISTICS, PROJECTING LIGHT ALONG SAID PATH THROUGH SAID RECORDS AND FILTERS TO PROVIDE PAIRS OF PREDETERMINEDLY DIFFERENTIALLYCOLORED IMAGES IN SUBSTANTIAL SUPERIMPOSITION AT AN IMAGE PLANE, AND VIEWING SAID PAIRS OF IMAGES BINOCULARLY THROUGH DISCRIMINATORY VIEWING FILTER MEANS OPERATING IN CONJUNCTION WITH DISCRIMINATORY MEANS IDENTIFIED WITH SAID PROJECTION FILTERS, TO RESTRICT THE PAIRS OF IMAGES IDENTIFIED WITH SAID FIRST AND SECOND STEREOSCOPIC LOCATIONS TO THE SEPARATE EYES OF THE VIEWER.
Claim 2
Independent Claim 420 words
A METHOD OF PRODUCING AND VIEWING COMPOSITE MULTICOLORED STEREOSCOPIC IMAGES OF A PHOTOGRAPHIC SUBJECT WHEREIN COLOR INTEGRITY IS MAINTAINED AND RETINAL RIVALRY IS SUBSTANTIALLY ELIMINATED THROUGH THE PROVISION OF A PREDETERMINED COLOR CONTENT AND CHOSEN DENSITIES OF A PLURALITY OF LEFT- AND RIGHT-EYE IMAGE COMPONENTS, SAID METHOD COMPRISING THE STEPS OF EXPOSING SUCCESSIVELY TO SAID SUBJECT FROM A FIRST STEREOSCOPIC LOCATION EACH FILM OF A FIRST PAIR OF PHOTOSENSITIVE FILMS OF GIVEN SPECTRAL SENSITIZATION CHARACTERISTICS THROUGH A PLURALITY OF VARIOUSLY-COLORED TAKING FILTERS AT EXPOSURE TIMES WHICH ARE SELECED FRACTIONS OF THE NORMAL TIMES THEREFOR RELATIVE TO SAID FILMS, THE COLORS OF SAID FILTERS AND THE EXPOSURE TIMES BEING AT LEAST IN PART RELATIVELY DIFFERENT FOR EACH OF THE FILMS OF SAID PAIR, EXPOSING SUCCESSIVELY TO SAID SUBJECT FROM A SECOND STEREOSCOPIC LOCATION EACH FILM OF A SECOND PAIR OF PHOTOSENSITIVES FILMS OF GIVEN SPECTRAL SENSITIZATION CHARACTERISTICS THROUGH A PLURALITY OF GIVEN COLORED TAKING FILTERS AT EXPOSURE TIMES WHICH ARE SELECTED FRACTIONS OF THE NORMAL TIMES THEREFOR RELATIVE TO SAID FILMS, THE COLORS OF SAID FILTERS AND THE EXPOSURE TIMES AGAIN BEING AT LEAST IN PART RELATIELY DIFFERENT FOR EACH OF THE FILMS OF SAID SECOND PAIR AND ALSO AT LEAST IN PART DIFFERENT FROM THE COLORS OF SAID FILTER AND EXPOSURE TIMES EMPLOYED WITH SAID FIRST PAIR OF FILMS, PRODUCING FIRST AND SECOND PAIRS OF BLACKAND-WHITE COLOR-SEPARATION RECORDS REPRESENTATIVE IN IMAGE CONTENT OF SAID FIRST AND SECOND STEREOSCOPIC LOCATION FROM SAID FIRST AND SECOND PAIRS OF FILMS, RESPECTIVELY, BY ANY SUITABLE METHOD, SAID PAIRS INCORPORATING EQUALLY BALANCED DENSITIES OF SAID IMAGE CONTENT BY REASON OF SAID FILM SENSITIZATION, TAKING FILTERS AND FRACTIONAL EXPOSURES, POSITIONING EACH RECORD OF SAID PAIRS IN AN INDIVIDUAL PATH OF LIGHT CONVERGING TO SUBSTANTIAL SUPERIMPOSITION AT AN IMAGE PLANE, PLACING A COLORED PROJECTION FILTER HAVING A RELATIVELY DIFFERENT TRANSMITTANCE IN EACH SAID PATH OF LIGHT SO THAT A PAIR OF FILTERS COMPOSED OF RELATIVELY LONG AND SHORT WAVELENGTH BAND TRANSMISSION FILTERS, IS POSITIONED IN THE PATHS IDENTIFIED WITH EACH OF SAID PAIRS OF COLORSEPARATION RECORDS, ONE PAIR OF SAID PROJECTION FILTERS DISTINGUISHING FROM THE OTHER IN WAVELENGTH CHARACTERISTICS, PROJECTING LIGHT ALONG SAID PATH THROUGH SAID RECORDS AND FILTERS TO PROVIDE PAIRS OF PREDETERMINEDLY DIFFERENTIALLYCOLORED IMAGES IN SUBSTANTIAL SUPERIMPOSITION AT AN IMAGE PLANE, AND VIEWING SAID PAIRS OF IMAGES BINOCULARLY THROUGH DISCRIMINATORY VIEWING FILTER MEANS OPERATING IN CONJUNCTION WITH DISCRIMINATORY MEANS IDENTIFIED WITH SAID PROJECTION FILTERS, TO RESTRICT THE PAIRS OF IMAGES IDENTIFIED WITH SAID FIRST AND SECOND STEREOSCOPIC LOCATIONS TO THE SEPARATE EYES OF THE VIEWER.

References Cited (Backward Citations)

US2136303A Cited
US2279281A Cited
US2289714A Cited
US2530023A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-12-06 1969-06-07 1969-12-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-12-06 1973-06-07 1973-12-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-12-06 1977-06-07 1977-12-07 $7700.00 Window Closed / Lapsed

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