US3663221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color recording on panchromatic sensitized material by additive modulation of pre-exposed gratings
Assignee: CLARK N KURTZ
•
Filing: 1970-09-25
•
Granted: 1972-05-16
•
Expires: 1990-09-25
Abstract
Abstract Three color components of a scene are recorded on a black-andwhite film which has, for example, separate blue, green and red sensitive elements and which has been pre-exposed with blue light, with green light and with red light to a grating or grid pattern. The gratings may be recorded angularly disposed relative to one another, or if of different spatial frequencies, they may be mutually aligned for every pre-exposure. When the pre-exposed film is subsequently exposed in a camera to a visual scene, the additional component scene exposures representative of color components of the visual scenes modulate corresponding grating latent images in accordance with the color and luminance of the component scene elements. After proper processing of the film, a color image can be formed by placing the film in a spatial filtering projection system using color filters. The color image can then be recorded on conventional color print materials or displayed.
Inventors
- 👤 George C Higgins
- 👤 Clark N Kurtz
- 👤 Fred C Eisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:13
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/42; G02B27/46
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
A photosensitive element adapted to be exposed to a visual scene for recording a plurality of latent images of component scenes which upon development of the element form component scene images which correspond to color components of said visual scene and which are optically reconstructable into a color representation of the visual scene, said element comprising: a mixed grain photosensitive layer comprising a plurality of types of grain, every type sensitive to a component color different from that to which any other is sensitive, and latent image gratings superposed relative to one another in said layer such that upon exposure of the layer to the visual scene, latent images of the component scenes are recorded in association with said latent image gratings.
Claim 2
Dependent Claim
120 words
A photosensitive element adapted to be exposed to a visual scene for recording a plurality of latent component scene images which correspond to color components of said visual scene and which after development of the element form component scene images which are optically reconstructable into a color representation of the visual scene, said element comprising: a support, a first layer photosensitive to one of said color components on said support, at least a second layer superposed on said first layer and photosensitive to at least another of said color components, and latent image gratings superposed relative to one another in said layers whereby upon exposure to the visual scene, latent component scene images are recorded in association with said gratings.
Claim 3
Dependent Claim
23 words
The element of claim 3 wherein every layer is photosensitive to a color component different from that to which any other is photosensitive.
Claim 4
Dependent Claim
32 words
The element of claim 4 wherein upon the exposure of the element, the layers, the color components, the latent image gratings, and the latent component scene images recorded are like in number.
Claim 5
Dependent Claim
33 words
The element of claim 5 wherein the latent image gratings associated with any latent component scene image are disposed in layers other than that in which said latent component scene image is located.
Claim 6
Dependent Claim
30 words
The element of claim 5 wherein every latent image grating is disposed in the same layer as the latent component scene image with which such latent image grating is associated.
Claim 7
Independent Claim
106 words
A method of producing a multilayer photosensitive element adapted for recording a plurality of latent component scene images which correspond to color components of a visual scene, said method comprising: providing on a support, a first layer photosensitive to one of said color coMponents and superposed thereon at least a second layer photosensitive to at least another of said color components; and exposing the layers to form in said layers latent image gratings which are superposed relative to one another, whereby upon exposure to the visual scene, the plurality of latent component scene images are recorded in association with said latent image gratings in said layers.
Claim 8
Dependent Claim
25 words
The method of claim 8 wherein every layer is exposed through a grating having stripes which absorb the light to which that layer is photosensitive.
Claim 9
Dependent Claim
29 words
The method of claim 8 and wherein every grating is exposed through a color filter respectively which passes light of the color to which the respective layer is sensitive.
Claim 10
Independent Claim
120 words
A method of producing a photosensitive element adapted for recording a plurality of latent component scene images which correspond to color components of a visual scene and which, after development of the element, are optically reconstructable into a color representation of the visual scene, said method comprising: providing on a support, a mixed grain photosensitive layer comprising a plurality of types of grain, every type sensitive to a component color different from that to which any other is sensitive, and superposing latent image gratings of like number to the types of grains in the photosensitive layer such that upon exposure to the visual scene, a plurality of latent component scene images associated with the latent image gratings will be recorded.
Claim 11
Dependent Claim
40 words
The method of claim 11 wherein the latent image gratings are produced by exposing the mixed grain layer to gratings like in number to the types of grains and in the colors to which the types of grain are sensitive.
Claim 12
Independent Claim
157 words
The method of making a multilayer transparency containing a plurality of component scene images which correspond to color components of a visual scene and containing gratings associated with the component scene images, the first order spectra of the component scene images and associated gratings being optically reconstructable into a color representation of the visual scene upon projection of light through the transparency, said method comprising: providing on a support, a plurality of superposed layers, every layer being photosensitive to a color component different from that to which any other layer is photosensitive, exposing the plurality of layers to form a plurality of latent image gratings respectively in said layers, exposing the layers to a visual scene such that latent component scene images are recorded in the layers, processing, including bleaching, the layers to form a negative such that the relationship between the exposure and the amplitude transmittance of every layer upon projection of the transparency is non-linear.
Claim 13
Independent Claim
157 words
The method of making a multilayer transparency from which cross-product spectra can be optically reconstructed into a color representation of a visual scene from a plurality of component scene images corresponding to the color components of the visual scene and gratings associated with such component scene images, said method comprising: providing on a support, a plurality of superposed layers, every such layer being photosensitive to a component color different from that to which any other layer is photosensitive, exposing the layers to form a plurality of latent image gratings respectively in said layers, negatively developing, bleaching, washing and drying the layers in total darkness to retain the sensitivity of the layers to the color components, and to obtain gratings therein. exposing the still sensitive layers to a visual scene such that a plurality of latent component scene images are recorded respectively on the layers photosensitive thereto, and processing, including developing the layers to form negative images therein.
Claim 14
Independent Claim
204 words
The method of making a transparency having a linear amplitude transmittance in relation to exposure for every layer, and containing a plurality of compoNent scene images representative of color components of a visual scene, said transparency containing gratings associated with the component scene images, the cross-product spectra of the component scene images and associated gratings being optically reconstructable into a color representation of the visual scene, said method comprising: providing on a support, a plurality of superposed layers, every layer being photosensitive to a color component different from that to which any other layer is photosensitive, exposing the plurality of layers to form a plurality of latent image gratings respectively with the gratings superposed relative to one another, exposing the photosensitive layers to a visual scene such that a plurality of latent component scene images are recorded in the layers in association with the latent image gratings, and reversal processing the photosensitive layers so that the relationship between exposure of every layer and the amplitude transmittance of that same layer as developed, produced upon projection of the transparency, is linear, i.e., for every layer: TA Alpha E where: TA is the amplitude transmittance of the developed layer E is the exposure of the layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |