Patent US4827291A successfully refreshed from Google Patents.
US4827291A
Expired / Lapsed
US
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Photographic aid apparatus for photographing a uniformly illuminated object
Assignee: AVNER Inc A CORP OF DE
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Filing: 1986-12-09
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Granted: 1989-05-02
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Expires: 2006-12-09
Abstract
Abstract Disclosed is a method for making superimposed photographs on the same frame of a roll of negative film, the photographs comprising a background and a foreground involving the following steps (a) first exposing a selected portion of a first frame of negative film with an image of one of the foreground and the background by shielding from exposure the remainder of the first frame with a first mask; (b) making a series of first exposures by repeating step (a) advancing the film by one frame for each exposure; (c) rewinding the film to the first frame; (d) preventing reexposure of the exposed portion of the first frame by shielding the portion with a second mask; (e) second-exposing the previously unexposed portion of the first frame with an image of the other of the foreground and the background; (f) making a series of second exposures by repeating the step (e) while advancing the film for each exposure.
Inventors
- 👤 Moshe Guez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:11
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/08; G03B15/02; G03B15/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
146 words
A method for making superimposed photographs on the same negative each of said photographs comprising a background and a foreground portion the method comprising: exposing a selected portion of the negative with an image of said foreground by shielding from exposure the remainder of said negative with a mask; centering a second mask over at least a substantial portion of said foreground image thereby preventing reexposure thereof; placing the subject of said background on a plate; indirectly lighting the subject of said background with a light field of substantially uniform density achieved from a single light source by first causing light from said source to impinge on a plurality of reflectors each disposed at a predetermined angle to said plate and employing reflected light from said reflectors to light said background; and exposing the unmasked portion of said negative with the image of said lit background.
Claim 2
Independent Claim
146 words
A method for making superimposed photographs on the same negative each of said photographs comprising a background and a foreground portion the method comprising: exposing a selected portion of the negative with an image of said foreground by shielding from exposure the remainder of said negative with a mask; centering a second mask over at least a substantial portion of said foreground image thereby preventing reexposure thereof; placing the subject of said background on a plate; indirectly lighting the subject of said background with a light field of substantially uniform density achieved from a single light source by first causing light from said source to impinge on a plurality of reflectors each disposed at a predetermined angle to said plate and employing reflected light from said reflectors to light said background; and exposing the unmasked portion of said negative with the image of said lit background.
Claim 3
Dependent Claim
28 words
The method of claim 1 further comprising controlling the degree of exposure of said background to bear a predetermined relationship to the degree of exposure of said foreground.
Claim 4
Dependent Claim
28 words
The method of claim 1 further comprising controlling the degree of exposure of said foreground to bear a predetermined relationship to the degree of exposure of said background.
Claim 5
Dependent Claim
26 words
The method of claim 1 wherein the subject of said background is selected from the group consisting of photographs, documents, projected images and previously superimposed images.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein the aperture for exposing said foreground bears a predetermined relationship to the aperture for exposing said background.
Claim 7
Dependent Claim
79 words
The method of claim 1 wherein said background is exposed on said negative after said negative contains an exposure of said foreground, the method further comprising using a second mask to shield said foreground from double exposure, said second mask consisting essentially of a frame and an opaque element centered to be in registry with said foreground image by means of thin wires, said second mask being mounted proximate to the camera lens employed for making said superimposed photograph.
Claim 8
Dependent Claim
13 words
The method of claim 1 wherein said foreground is photographed before said background.
Claim 9
Independent Claim
156 words
A method for making superimposed photographs on the same negative frame of film, said photographs comprising a background and a foreground, the method comprising: (a) first exposing a selected portion of said negative frame with an image of one of said background and foreground by shielding from exposure the remainder of said negative frame with a mask; (b) positioning the subject of the other of said background and foreground on a plate; indirectly illuminating said plate with light of substantially uniform density from a single light source by directing light from said light source to a plurality of reflectors positioned at predetermined angles to the plane of said plate and impinging reflected light from said reflectors on said subject; (c) positioning a second mask in registry with at least a substantial portion of said first exposed image thereby preventing reexposure thereof; and (d) exposing the unmasked portion of said negative with the image of said subject.
Claim 10
Independent Claim
156 words
A method for making superimposed photographs on the same negative frame of film, said photographs comprising a background and a foreground, the method comprising: (a) first exposing a selected portion of said negative frame with an image of one of said background and foreground by shielding from exposure the remainder of said negative frame with a mask; (b) positioning the subject of the other of said background and foreground on a plate; indirectly illuminating said plate with light of substantially uniform density from a single light source by directing light from said light source to a plurality of reflectors positioned at predetermined angles to the plane of said plate and impinging reflected light from said reflectors on said subject; (c) positioning a second mask in registry with at least a substantial portion of said first exposed image thereby preventing reexposure thereof; and (d) exposing the unmasked portion of said negative with the image of said subject.
Claim 11
Dependent Claim
16 words
The method of claim 8 further comprising also conducting step (a) in accordance with step (b).
Claim 12
Independent Claim
157 words
A method for making superimposed photographs on the same frame of a roll of negative film, said photographs comprising a background and a foreground, the method comprising the following steps in sequence: (a) first exposing a selected portion of a first frame of negative film with an image of one of said foreground and said background by shielding from exposure the remainder of said first frame with a first mask; (b) making a series of first exposures by repeating step (a) advancing the film by one frame for each exposure; (c) rewinding said film to the first frame; (d) preventing reexposure of the exposed portion of said first frame by shielding said portion with a second mask; (e) second-exposing the previously unexposed portion of said first frame with an image of the other of said foreground and said background; (f) making a series of second exposures by repeating said step (e) advancing the film for each exposure.
Claim 13
Independent Claim
157 words
A method for making superimposed photographs on the same frame of a roll of negative film, said photographs comprising a background and a foreground, the method comprising the following steps in sequence: (a) first exposing a selected portion of a first frame of negative film with an image of one of said foreground and said background by shielding from exposure the remainder of said first frame with a first mask; (b) making a series of first exposures by repeating step (a) advancing the film by one frame for each exposure; (c) rewinding said film to the first frame; (d) preventing reexposure of the exposed portion of said first frame by shielding said portion with a second mask; (e) second-exposing the previously unexposed portion of said first frame with an image of the other of said foreground and said background; (f) making a series of second exposures by repeating said step (e) advancing the film for each exposure.
Claim 14
Dependent Claim
63 words
The method of claim 10 further comprising indirectly lighting the subject of said background with a light field of substantially uniform density achieved from a single light source by first causing light from said light source to impinge on a plurality of reflectors each disposed at a predetermined angle to said plate and employing light reflected from said reflectors to light said background.
References Cited (Backward Citations)
US3124050A
Cited
US2186610A
Cited
US2989907A
Cited
US3940775A
Cited
US4012748A
Cited
US4149790A
Cited
US4137540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |