US3783185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-color acoustooptic modulator
Assignee: Eastman Kodak Co
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Filing: 1972-01-28
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Granted: 1974-01-01
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Expires: 1992-01-28
Abstract
Abstract An apparatus and method are disclosed for acoustooptically modulating and diffracting a plurality of optical wavelengths contained in laser light impinging on an acoustooptic cell to form a composite output beam comprising intensity modulated component beams of selected wavelengths present in the impinging laser light. To accomplish this, a plurality of amplitude modulated electrical signals of different fixed frequencies are applied to an electrical-to-acoustical transducer operatively attached to the cell. Every frequency applied to the transducer produces an acoustic wave within the cell to form a diffraction spectrum of the wavelengths present in the laser light impinging or incident on the cell. The acoustic wave producing electrical frequencies are chosen such that diffracted component beams of selected wavelengths are collinear. Thus, the collinear component beams form a composite output beam comprising the selected diffracted wavelengths. Non-collinear beams of the selected wavelengths as well as unwanted diffracted wavelengths and undiffracted beams are masked or blocked from further passage through the optical system. The amplitudes of the electrical signals producing the acoustic waves within the cell are modulated independently to control the intensities of the individual component beams of selected wavelengths present in the composite output beam. The laser light impinging on the cell can comprise a single multi-wavelength beam; two collinear beams of different wavelengths and a third noncollinear beam of another wavelength; or beams of different wavelengths can be mutually noncollinear, the angles of impingement being chosen in accordance with what electrical frequencies are applied to the transducer.
Inventors
- 👤 R Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:04
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/11
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
128 words
An apparatus including an acoustooptic cell for modulating and diffracting light of different wavelengths impinging on said cell onto a composite, collinear output beam of light comprising a selected number of the different wavelengths present in said impinging light, the combination comprising: an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-wavelength light upon said cell; means for generating a plurality of electrical signals in accordance with a selected number of collinear output beams, each signal being of a different fixed frequency; and means for applying said electrical signals to said transducer means to form acoustic waves in said cell which diffract said light impinging on said cell to form said composite, collinear output beam of light of said selected number of different wavelengths.
Claim 2
Independent Claim
128 words
An apparatus including an acoustooptic cell for modulating and diffracting light of different wavelengths impinging on said cell onto a composite, collinear output beam of light comprising a selected number of the different wavelengths present in said impinging light, the combination comprising: an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-wavelength light upon said cell; means for generating a plurality of electrical signals in accordance with a selected number of collinear output beams, each signal being of a different fixed frequency; and means for applying said electrical signals to said transducer means to form acoustic waves in said cell which diffract said light impinging on said cell to form said composite, collinear output beam of light of said selected number of different wavelengths.
Claim 3
Dependent Claim
16 words
The invention of claim 1 including means for modulating said electrical signals of different fixed frequency.
Claim 4
Dependent Claim
23 words
The invention of claim 1 wherein said modulating means comprises means for independently controlling the amplitudes of said signals of different fixed frequencies.
Claim 5
Dependent Claim
15 words
The invention of claim 1 wherein said impinging means comprises a multi-wavelength laser light beam.
Claim 6
Dependent Claim
31 words
The invention of claim 1 wherein said impinging means comprises at least two collinear laser light beams of different wavelengths and at least one other laser light beam of another wavelength.
Claim 7
Independent Claim
169 words
An apparatus for recording a color image corresponding to a color image on a storage medium onto color sensitive photographic recording material, said apparatus comprising: means for scanning said medium with multi-wavelength light that is modulated in accordance with the color image on said medium; photoelectric means for receiving the modulated light and for generating a number of electrical signals, each of which is representative of a different selected wavelength within the modulated light; means responsive to said photoelectric means for modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-wavelength laser light upon said cell; means for applying said modulated signals to said transducer means to produce acoustic waves in said cell which diffract said laser light into at least one composite, collinear output beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam of light to record a color image thereon corresponding to the color image on said medium.
Claim 8
Independent Claim
169 words
An apparatus for recording a color image corresponding to a color image on a storage medium onto color sensitive photographic recording material, said apparatus comprising: means for scanning said medium with multi-wavelength light that is modulated in accordance with the color image on said medium; photoelectric means for receiving the modulated light and for generating a number of electrical signals, each of which is representative of a different selected wavelength within the modulated light; means responsive to said photoelectric means for modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-wavelength laser light upon said cell; means for applying said modulated signals to said transducer means to produce acoustic waves in said cell which diffract said laser light into at least one composite, collinear output beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam of light to record a color image thereon corresponding to the color image on said medium.
Claim 9
Dependent Claim
21 words
The invention of claim 6 further comprising means for synchronizing said photographic recording material scanning means with said medium scanning means.
Claim 10
Independent Claim
174 words
An apparatus for recording a color image corresponding to a color image on a positive transparency onto color sensitive photogRaphic recording material, said apparatus comprising: means for scanning said transparency with multi-wavelength light that is modulated in accordance with the color image on said transparency; photoelectric means for receiving said modulated light and for generating a number of electrical signals of different fixed frequencies, the signals corresponding in number to a selected number of different wavelengths of modulated light; means responsive to said photoelectric means for modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-wavelength laser light upon said cell; means for applying said modulated electrical signals to said transducer means to produce acoustic waves in said cell which diffract said laser light to form at least one composite, collinear output beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam to record a color image thereon corresponding to the color image on said transparency.
Claim 11
Independent Claim
174 words
An apparatus for recording a color image corresponding to a color image on a positive transparency onto color sensitive photogRaphic recording material, said apparatus comprising: means for scanning said transparency with multi-wavelength light that is modulated in accordance with the color image on said transparency; photoelectric means for receiving said modulated light and for generating a number of electrical signals of different fixed frequencies, the signals corresponding in number to a selected number of different wavelengths of modulated light; means responsive to said photoelectric means for modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-wavelength laser light upon said cell; means for applying said modulated electrical signals to said transducer means to produce acoustic waves in said cell which diffract said laser light to form at least one composite, collinear output beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam to record a color image thereon corresponding to the color image on said transparency.
Claim 12
Dependent Claim
21 words
The invention of claim 8 further comprising means for synchronizing said photographic recording material scanning means with said transparency scanning means.
Claim 13
Independent Claim
181 words
An apparatus for recording a color image corresponding to the positive of a negative image on a color transparency onto color sensitive photographic material, said apparatus comprising: means for scanning said negative transparency with a multi-wavelength beam of light to modulate the wavelengths thereof in accordance with the image on said negative transparency; photoelectric means for receiving said modulated beam of light for generating electrical signals of different fixed frequencies in accordance with a number of different selected wavelengths in the modulated beam; means responsive to said photoelectric means for amplitude modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means attached thereto; means for impinging multi-wavelength laser light upon said cell; means for applying said modulated electrical signals to said transducer means to produce acoustic waves in said cell which diffract said laser light to form at least one composite, collinear output beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam to record a color image thereon corresponding to the positive of the negative image on the transparency.
Claim 14
Independent Claim
181 words
An apparatus for recording a color image corresponding to the positive of a negative image on a color transparency onto color sensitive photographic material, said apparatus comprising: means for scanning said negative transparency with a multi-wavelength beam of light to modulate the wavelengths thereof in accordance with the image on said negative transparency; photoelectric means for receiving said modulated beam of light for generating electrical signals of different fixed frequencies in accordance with a number of different selected wavelengths in the modulated beam; means responsive to said photoelectric means for amplitude modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means attached thereto; means for impinging multi-wavelength laser light upon said cell; means for applying said modulated electrical signals to said transducer means to produce acoustic waves in said cell which diffract said laser light to form at least one composite, collinear output beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam to record a color image thereon corresponding to the positive of the negative image on the transparency.
Claim 15
Independent Claim
181 words
An apparatus for recording a color image corresponding to a color image on an opaque support onto color sensitive photographic recording material, said apparatus comprising: means for scanning the color image on said support with a multi-wavelength beam of light the light of different wavelengths being reflected by and modulated in accordance with the color image; photoelectric means for receiving the modulated wavelengths of light for generating electrical signals of different fixed frequencies in accordance with a number of different selected wavelengths present in the reflected light; means responsive to said photoelectric means for modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-color laser light upon said cell; means for applying said modulated electrical signals to said transducer means to produce acoustic waves in said cell which diffract said laser light to form at least one composite, collinear beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam to record a color image thereon corresponding to the color image on said support.
Claim 16
Independent Claim
181 words
An apparatus for recording a color image corresponding to a color image on an opaque support onto color sensitive photographic recording material, said apparatus comprising: means for scanning the color image on said support with a multi-wavelength beam of light the light of different wavelengths being reflected by and modulated in accordance with the color image; photoelectric means for receiving the modulated wavelengths of light for generating electrical signals of different fixed frequencies in accordance with a number of different selected wavelengths present in the reflected light; means responsive to said photoelectric means for modulating said electrical signals; an acoustooptic cell having electrical-to-acoustical transducer means operatively attached thereto; means for impinging multi-color laser light upon said cell; means for applying said modulated electrical signals to said transducer means to produce acoustic waves in said cell which diffract said laser light to form at least one composite, collinear beam of said different selected wavelengths; and means for scanning said photographic recording material with said composite, collinear output beam to record a color image thereon corresponding to the color image on said support.
Claim 17
Independent Claim
165 words
An apparatus for recording an image on a color sensitive photographic recording material from color infOrmation in a storage medium, said apparatus comprising: means for directing a multi-wavelength beam of light onto said storage medium to produce a first X-Y scanning beam; means for receiving the wavelengths of light as modulated by the color information and for converting a number of different selected modulated wavelengths of said light into electrical signals, each of which is modulated by a signal of different fixed frequency; means responsive to said multi-wavelength beam of light and to said electrical signals for producing a second X-Y scanning beam comprising a group of different selected wavelengths of light corresponding in number to the number of different selected wavelengths; means for synchronizing the second X-Y scanning beam with the first X-Y scanning beam; and means for exposing said photographic recording material with said second X-Y scanning beam to record an image thereon representative of the color information derived from said storage medium.
Claim 18
Independent Claim
165 words
An apparatus for recording an image on a color sensitive photographic recording material from color infOrmation in a storage medium, said apparatus comprising: means for directing a multi-wavelength beam of light onto said storage medium to produce a first X-Y scanning beam; means for receiving the wavelengths of light as modulated by the color information and for converting a number of different selected modulated wavelengths of said light into electrical signals, each of which is modulated by a signal of different fixed frequency; means responsive to said multi-wavelength beam of light and to said electrical signals for producing a second X-Y scanning beam comprising a group of different selected wavelengths of light corresponding in number to the number of different selected wavelengths; means for synchronizing the second X-Y scanning beam with the first X-Y scanning beam; and means for exposing said photographic recording material with said second X-Y scanning beam to record an image thereon representative of the color information derived from said storage medium.
Claim 19
Dependent Claim
91 words
The invention of claim 12 wherein said producing means for said second X-Y scanning beam comprises: an acoustooptic cell having electrical-to-acoustical transducer means operably attached thereto; means for impinging a multi-wavelength beam of laser light upon said cell; and means comprising a summing amplifier responsive to said modulated electrical signals and interconnected to said transducer means for producing acoustic waves within the cell which diffract the light beams impinging upon the cell to form a composite, collinear output beam comprising wavelengths of light corresponding to said group of different selected wavelengths.
Claim 20
Dependent Claim
27 words
The invention of claim 12 wherein said first and second scanning beams are derived from a common laser source and are coupled to a common synchronizing means.
Claim 21
Independent Claim
209 words
An apparatus for recording a color image corresponding to color information on a color storage medium onto color sensitive photographic recording material, said apparatus comprising: means for scanning said storage medium with a multi-wavelength beam of light in a single dimension of scan; means for moving said storage medium in a direction substantially perpendicular to said dimension of scan to produce an effective X-Y scan of the medium; means responsive to a number of different selected wavelengths of the scanning beam as modulated by said medium for generating a corresponding number of electrical signals, each of said signals being modulated by a single of different fixed frequency; an acoustooptic cell having electrical-to-acoustical transducer means operably attached thereto; means for impinging a plurality of laser produced light beams of different wavelengths upon said cell; means responsive to said modulated electrical signals and interconnected to said transducer means for diffracting said multi-wavelength beam of light to produce a composite, collinear output beam of light comprising said different selected wavelengths; means for moving said collinear output beam in scanning synchronism with the medium scanning means; and means for exposing said photographic recording material with said collinear output beam to record color images thereon corresponding to the color information on said storage medium.
Claim 22
Independent Claim
209 words
An apparatus for recording a color image corresponding to color information on a color storage medium onto color sensitive photographic recording material, said apparatus comprising: means for scanning said storage medium with a multi-wavelength beam of light in a single dimension of scan; means for moving said storage medium in a direction substantially perpendicular to said dimension of scan to produce an effective X-Y scan of the medium; means responsive to a number of different selected wavelengths of the scanning beam as modulated by said medium for generating a corresponding number of electrical signals, each of said signals being modulated by a single of different fixed frequency; an acoustooptic cell having electrical-to-acoustical transducer means operably attached thereto; means for impinging a plurality of laser produced light beams of different wavelengths upon said cell; means responsive to said modulated electrical signals and interconnected to said transducer means for diffracting said multi-wavelength beam of light to produce a composite, collinear output beam of light comprising said different selected wavelengths; means for moving said collinear output beam in scanning synchronism with the medium scanning means; and means for exposing said photographic recording material with said collinear output beam to record color images thereon corresponding to the color information on said storage medium.
Claim 23
Dependent Claim
46 words
The invention of claim 15 wherein said collinear output beam has a scanning direction corresponding to and synchronized with the scanning direction of said medium scanning beam and the photographic recording material is moved in a direction corresponding to and synchronized with that of said medium.
Claim 24
Dependent Claim
29 words
The invention of claim 16 wherein said collinear output beam and medium scanning beams are derived from the same laser source and are responsive to a common synchronizing means.
Claim 25
Dependent Claim
53 words
The invention of claim 15 wherein said diffracting means includes: means for summing the plurality of modulated electrical signals of different fixed frequencies to produce said composite, collinear output beaM; and means for varying the amplitudes of said electrical signals of fixed frequencies to control the intensity of said composite, collinear output beam.
Claim 26
Independent Claim
138 words
An apparatus for recording color images corresponding to color information carrying video signals onto motion picture film, said apparatus comprising: laser source means for producing multi-wavelength light; means for converting video signals carrying color information to electrical signals of different fixed frequencies which are modulated in accordance with the color information carried by said video signals; means responsive to said electrical signals for diffracting light from said source means into a composite, collinear output beam comprising a number of different selected wavelengths present in said light; means for moving said collinear output beam so as to produce an X-Y scanning motion of said beam; means for synchronizing said X-Y scanning motion with said video signals; and means for exposing motion picture film to said collinear output beam to record images on said film corresponding to said color information.
Claim 27
Independent Claim
138 words
An apparatus for recording color images corresponding to color information carrying video signals onto motion picture film, said apparatus comprising: laser source means for producing multi-wavelength light; means for converting video signals carrying color information to electrical signals of different fixed frequencies which are modulated in accordance with the color information carried by said video signals; means responsive to said electrical signals for diffracting light from said source means into a composite, collinear output beam comprising a number of different selected wavelengths present in said light; means for moving said collinear output beam so as to produce an X-Y scanning motion of said beam; means for synchronizing said X-Y scanning motion with said video signals; and means for exposing motion picture film to said collinear output beam to record images on said film corresponding to said color information.
Claim 28
Independent Claim
91 words
An apparatus for producing a color display comprising: laser source means for producing multi-wavelength light; means for generating a selected number of electrical signals of different fixed frequencies and for modulating the signals generated thereby; acoustooptic means optically coupled with said laser means and responsive to said electrical signals for producing a composite, collinear output beam containing a number of different selected ones of the wavelengths present in the light from said laser means; and means for directing said composite, collinear output bean onto a screen to produce said color display.
Claim 29
Independent Claim
91 words
An apparatus for producing a color display comprising: laser source means for producing multi-wavelength light; means for generating a selected number of electrical signals of different fixed frequencies and for modulating the signals generated thereby; acoustooptic means optically coupled with said laser means and responsive to said electrical signals for producing a composite, collinear output beam containing a number of different selected ones of the wavelengths present in the light from said laser means; and means for directing said composite, collinear output bean onto a screen to produce said color display.
Claim 30
Dependent Claim
22 words
The invention of claim 20 wherein said beam directing means includes means for scanning said screen with said composite, collinear output beam.
Claim 31
Independent Claim
93 words
A method of producing a composite, collinear beam of light comprising a plurality of different selected wavelengths derived from the wavelengths in one or more laser light sources; the method comprising the steps of: propagating multi-wavelength laser light; generating a number of electrical signals of different fixed frequencies; modulating said signals to provide signals of predetermined intensities; and acoustooptically diffracting said propagated laser light in accordance with said electrical signals to form a composite, collinear output beam comprising a number of different selected wavelengths corresponding in number to said number of electrical signals.
Claim 32
Independent Claim
93 words
A method of producing a composite, collinear beam of light comprising a plurality of different selected wavelengths derived from the wavelengths in one or more laser light sources; the method comprising the steps of: propagating multi-wavelength laser light; generating a number of electrical signals of different fixed frequencies; modulating said signals to provide signals of predetermined intensities; and acoustooptically diffracting said propagated laser light in accordance with said electrical signals to form a composite, collinear output beam comprising a number of different selected wavelengths corresponding in number to said number of electrical signals.
Claim 33
Dependent Claim
17 words
The invention of claim 22 wherein propagating laser light comprises propagating a multi-wavelength beam of laser light.
Claim 34
Dependent Claim
18 words
The invention of claim 22 wherein propagating laser light comprises propagating at least two wavelengths of laser light.
Claim 35
Independent Claim
138 words
A method for recording a color image corresponding to a color image on a positive transparency onto a color sensitive photographic recording material comprising the steps of: propagating a beam of multi-wavelength laser light; scanning the transparency with said multi-wavelength beam of light; receiving the beam as modulated by the transparency; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the intensity of a respective one of a corresponding number of different selected wavelengths present in the received modulated beam; acoustooptically diffracting said propagated laser light in accordance with said modulated electrical signals to form a composite, collinear output beam including said selected wavelengths; and scanning said photographic recording material with said composite, collinear output beam to form a color image thereon corresponding to the image in the transparency.
Claim 36
Independent Claim
138 words
A method for recording a color image corresponding to a color image on a positive transparency onto a color sensitive photographic recording material comprising the steps of: propagating a beam of multi-wavelength laser light; scanning the transparency with said multi-wavelength beam of light; receiving the beam as modulated by the transparency; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the intensity of a respective one of a corresponding number of different selected wavelengths present in the received modulated beam; acoustooptically diffracting said propagated laser light in accordance with said modulated electrical signals to form a composite, collinear output beam including said selected wavelengths; and scanning said photographic recording material with said composite, collinear output beam to form a color image thereon corresponding to the image in the transparency.
Claim 37
Independent Claim
139 words
A method of recording a color image corresponding to a color image in a negative transparency onto a color sensitive photographic recording material comprIsing the steps of: propagating a beam of multi-wavelength laser light; scanning the transparency with said multi-wavelength beam of light; receiving the beam as modulated by the transparency; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the intensity of a respective one of a corresponding number of different selected wavelengths present in the received modulated beam; acoustooptically diffracting said propagated laser light in accordance with said modulated electrical signals to form a composite, collinear output beam including said selected wavelengths; and scanning said photographic recording material with said composite, collinear output beam to form a color image thereon corresponding to the image in the negative transparency.
Claim 38
Independent Claim
139 words
A method of recording a color image corresponding to a color image in a negative transparency onto a color sensitive photographic recording material comprIsing the steps of: propagating a beam of multi-wavelength laser light; scanning the transparency with said multi-wavelength beam of light; receiving the beam as modulated by the transparency; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the intensity of a respective one of a corresponding number of different selected wavelengths present in the received modulated beam; acoustooptically diffracting said propagated laser light in accordance with said modulated electrical signals to form a composite, collinear output beam including said selected wavelengths; and scanning said photographic recording material with said composite, collinear output beam to form a color image thereon corresponding to the image in the negative transparency.
Claim 39
Independent Claim
138 words
A method of recording a color image corresponding to a color print onto a color sensitive recording material comprising the steps of: propagating a beam of multi-wavelength laser light; scanning the color print with said multi-wavelength beam of light; receiving light reflected from and modulated by the color print; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the intensity of a respective one of a corresponding number of different selected wavelengths presented in the reflected modulated light; acoustooptically diffracting said propagated laser light in accordance with said modulated electrical signals to form a composite, collinear output beam including said selected wavelengths; and scanning said color sensitive photographic recording material with said composite, collinear output beam to form a color image thereon corresponding to that of the color print.
Claim 40
Independent Claim
138 words
A method of recording a color image corresponding to a color print onto a color sensitive recording material comprising the steps of: propagating a beam of multi-wavelength laser light; scanning the color print with said multi-wavelength beam of light; receiving light reflected from and modulated by the color print; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the intensity of a respective one of a corresponding number of different selected wavelengths presented in the reflected modulated light; acoustooptically diffracting said propagated laser light in accordance with said modulated electrical signals to form a composite, collinear output beam including said selected wavelengths; and scanning said color sensitive photographic recording material with said composite, collinear output beam to form a color image thereon corresponding to that of the color print.
Claim 41
Independent Claim
113 words
A method of recording color information carried by television signals on color sensitive motion picture film comprising the steps of: propagating a beam of multi-wavelength laser light; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the color information carried by the television signals; acoustooptically diffracting said propagated laser light to form a composite, collinear output beam including a number of different selected wavelengths corresponding in number to said electrical signals; and scanning the color sensitive motion picture film with said composite, collinear output beam to record a color image on said film in accordance with the color information carried by the television signals.
Claim 42
Independent Claim
113 words
A method of recording color information carried by television signals on color sensitive motion picture film comprising the steps of: propagating a beam of multi-wavelength laser light; generating a number of electrical signals of different fixed frequencies, each of which is modulated in accordance with the color information carried by the television signals; acoustooptically diffracting said propagated laser light to form a composite, collinear output beam including a number of different selected wavelengths corresponding in number to said electrical signals; and scanning the color sensitive motion picture film with said composite, collinear output beam to record a color image on said film in accordance with the color information carried by the television signals.
References Cited (Backward Citations)
US3316348A
Cited
US3303276A
Cited
US3314075A
Cited
US3544718A
Cited
US3597536A
Cited
US3622690A
Cited
US3614312A
Cited
US3700805A
Cited
USPTO Annuity & Maintenance Windows
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|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |