US4158501A
Expired / Lapsed
US
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Projection printing method and apparatus
Assignee: Three Dimensional Photography Corp
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Filing: 1977-12-27
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Granted: 1979-06-19
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Expires: 1997-12-27
Abstract
Abstract An apparatus and method of making a parallax stereogram, i.e., free vision stereogram, and particularly for the accurate registration of a plurality of film images in order to ensure stereographic reproduction. Each film frame having the image thereon includes marks which are used in a projection printing apparatus to register the image in a desired position. The registration is accomplished by mechanical alignment according to the mark or by optically sensing the mark. A comparator-servo can adjust the film frame to the desired position. After registration each film frame is exposed onto a photosensitive material using a movable line grid. A lenticular screen is superimposed over the developed picture to form the stereoscopic photograph.
Inventors
- 👤 Edgar C. Smith
- 👤 James B. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:56
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/14
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
197 words
A method of processing film images for making a stereogram comprising the steps or providing a plurality of film frame images of the same subject, each frame being marked to identify homologous points for the images to establish an aim point for each image, providing a line grid having alternating opaque and transparent portions of a defined width superimposed over photosensitive printing paper; using the mark to optically project a first film image so as to place the aim point at a given location on the printing paper and expose on the paper a first portion of the first film image equal to the width of the transparent portion of the line grid while maintaining the line grid stationary; using the mark to optically project a second film image so as to place the aim point at the given location and expose on the paper a second portion of the second film image equal to the width of the transparent portion of the line grid while maintaining the line grid stationary after causing a linear incremental relative movement between the line grid and the paper; repeating sequentially the last mentioned step foe each remaining film frame image.
Claim 2
Independent Claim
197 words
A method of processing film images for making a stereogram comprising the steps or providing a plurality of film frame images of the same subject, each frame being marked to identify homologous points for the images to establish an aim point for each image, providing a line grid having alternating opaque and transparent portions of a defined width superimposed over photosensitive printing paper; using the mark to optically project a first film image so as to place the aim point at a given location on the printing paper and expose on the paper a first portion of the first film image equal to the width of the transparent portion of the line grid while maintaining the line grid stationary; using the mark to optically project a second film image so as to place the aim point at the given location and expose on the paper a second portion of the second film image equal to the width of the transparent portion of the line grid while maintaining the line grid stationary after causing a linear incremental relative movement between the line grid and the paper; repeating sequentially the last mentioned step foe each remaining film frame image.
Claim 3
Dependent Claim
36 words
A method according to claim 1 wherein the plurality of film images is a continuous strip and wherein the incremental movement of the line grid is in the same direction as the movement of the strip.
Claim 4
Dependent Claim
16 words
A method according to claim 1 wherein the mark is is registered mechanically during optical projection.
Claim 5
Dependent Claim
32 words
A method according to claim 3 wherein the mark comprises a plurality of apertures and the registration step comprises aligning the apertures with registration pins and extending the pins through the apertures.
Claim 6
Dependent Claim
20 words
A method according to claim 1 comprising the step of superimposing a viewing screen over the subsequently developed printing paper.
Claim 7
Dependent Claim
9 words
A product according to the method of claim 5.
Claim 8
Dependent Claim
9 words
A product according to the method of claim 3.
Claim 9
Dependent Claim
16 words
A method according to claim 1 wherein the film frame is registered optically during optical projection.
Claim 10
Dependent Claim
9 words
A product according to the method of claim 8.
Claim 11
Dependent Claim
41 words
A method according to claim 1 wherein the film frame has a plurality of marks, sensing the marks to produce a signal for each mark, and adjusting the film frame position until the signals are substantially equal before projecting the image.
Claim 12
Dependent Claim
19 words
A method according to claim 10 wherein the sensing comprises optically scanning the marks to produce the sensed signal.
Claim 13
Dependent Claim
24 words
A method according to claim 10 wherein the sensing comprises generating an optical source, and sensing the optical source in relation to each mark.
Claim 14
Dependent Claim
34 words
A method according to claim 1 wherein the film frame has a plurality of marks and sensing the markings to produce a signal for each mark, the sensing provided by a scanning optical source.
Claim 15
Dependent Claim
34 words
A method according to claim 1 wherein the film frame has a plurality of marks and sensing the markings to produce a signal for each mark, the sensing provided by a scanning optical sensor.
Claim 16
Dependent Claim
36 words
A method according to claim 1 wherein the plurality of film images is a continuous strip and wherein the incremental relative movement of the paper is in a direction opposite to the movement of the strip.
Claim 17
Dependent Claim
49 words
A method according to claim 1 wherein the marked film comprises a selected pair of film frames marked to identify the homologous points and the remaining film frames are marked to identify in each film frame a point which is the same point as identified in the selected pair.
Claim 18
Dependent Claim
9 words
A product according to the method of claim 16.
Claim 19
Dependent Claim
20 words
A method according to claim 16 comprising the step of superimposing a viewing screen over the subsequently developed printing paper.
Claim 20
Dependent Claim
9 words
A product according to the method of claim 18.
Claim 21
Dependent Claim
27 words
A method according to claim 1 comprising the step of adjusting the aim point by moving the optical projection of the film frame mark in horizontal increments.
Claim 22
Dependent Claim
9 words
A product according to the method of claim 20.
Claim 23
Dependent Claim
20 words
A method according to claim 20 comprising the step of superimposing a viewing screen over the subsequently developed printing paper.
Claim 24
Dependent Claim
9 words
A product according to the method of claim 22.
Claim 25
Dependent Claim
25 words
A method according to claim 1 comprising the step of adjusting the aim point by moving the line grid and paper together in horizontal increments.
Claim 26
Dependent Claim
9 words
A product according to the method of claim 24.
Claim 27
Dependent Claim
20 words
A method according to claim 24 comprising the step of superimposing a viewing screen over the subsequently developed printing paper.
Claim 28
Dependent Claim
9 words
A product according to the method of claim 26.
Claim 29
Dependent Claim
9 words
A product according to the method of claim 1.
Claim 30
Dependent Claim
163 words
A projection printing apparatus for making a stereogram comprising means for supporting a plurality of film frame images of the same subject, each film frame having a mark thereon to identify a corresponding homologous point in each film frame image to establish an aim point; means for registering the film frame image in a desired position according to the mark; a line grid means disposed between the film frame image and photosensitive paper, the line grid having a repeating pattern of alternating opaque and transparent portions, the transparent portions being of a given width; means for optically projecting the film frame image through the line grid means onto the photosensitive paper so as to place the aim point at a given location on the paper and expose on the paper a portion of the film frame image equal to the given width of the transparent portions; and means for causing a linear incremental relative movement between the line grid mens and the paper.
Claim 31
Dependent Claim
163 words
A projection printing apparatus for making a stereogram comprising means for supporting a plurality of film frame images of the same subject, each film frame having a mark thereon to identify a corresponding homologous point in each film frame image to establish an aim point; means for registering the film frame image in a desired position according to the mark; a line grid means disposed between the film frame image and photosensitive paper, the line grid having a repeating pattern of alternating opaque and transparent portions, the transparent portions being of a given width; means for optically projecting the film frame image through the line grid means onto the photosensitive paper so as to place the aim point at a given location on the paper and expose on the paper a portion of the film frame image equal to the given width of the transparent portions; and means for causing a linear incremental relative movement between the line grid mens and the paper.
Claim 32
Dependent Claim
19 words
An apparatus according to claim 29 wherein the registration means comprises mechanical means which engage the film frame mark.
Claim 33
Dependent Claim
28 words
An apparatus according to claim 30 wherein the mark comprises an aperture in the film frame and the mechanical means comprise a pin which extends through the aperture.
Claim 34
Dependent Claim
42 words
An apparatus according to claim 29 wherein the registration means comprises means for sensing the film frame to determine the mark on the film frame and produce a signal for each mark; and means for determining when the signals are substantially equal.
Claim 35
Dependent Claim
13 words
An apparatus according to claim 32 wherein the sensing means comprises optical sensors.
Claim 36
Dependent Claim
25 words
An apparatus according to claim 32 wherein the registration means includes means responsive to the signals to adjust the film image to the desired position.
Claim 37
Dependent Claim
24 words
An apparatus according to claim 32 wherein the sensing means comprises for each mark a solid state optical source and a multi-element optical sensor.
Claim 38
Dependent Claim
21 words
An apparatus according to claim 29 wherein the incremental movement means causes the line grid to move relative to the paper.
Claim 39
Dependent Claim
39 words
An apparatus according to claim 29 comprising a plurality of film frames forming a continuous film strip and wherein the incremental movement is in the same direction as the movement of the strip during registration of each film image.
Claim 40
Dependent Claim
15 words
An apparatus according to claim 29 wherein the film frame has a plurality of marks.
Claim 41
Dependent Claim
20 words
An apparatus according to claim 38 wherein each of the mark has a different relative orientation to the film image.
Claim 42
Dependent Claim
30 words
An apparatus according to claim 29 wherein the line grid transparent portion has a width determined by dividing the total width of the repeating pattern by the film frame plurality.
Claim 43
Dependent Claim
51 words
An apparatus according to claim 29 wherein the registration means comprises means for sensing the film frame to determine the mark on the film frame and produce a signal for each mark, wherein the sensing means comprises an optical source scanning each mark and optically sensitive output means for each mark.
Claim 44
Dependent Claim
52 words
An apparatus according to claim 29 wherein the registration means comprises means for sensing the film frame to determine the mark on the film frame and produce a signal for each mark, wherein the sensing means comprises an optical source for each mark and an optically sensitive output means scanning each mark.
Claim 45
Dependent Claim
36 words
An apparatus according to claim 29 wherein the plurality of film images is a continuous strip and wherein the incremental relative movement of the paper is in a direction opposite to the movement of the strip.
Claim 46
Dependent Claim
18 words
A projection printing apparatus according to claim 29 wherein the optical projection means is movable in horizontal increments.
Claim 47
Dependent Claim
20 words
A projection printing apparatus according to claim 29 wherein the line grid and paper are movable together in horizontal increments.
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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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |