US4238148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional photographic technique
Assignee: AT&T Inc
•
Filing: 1980-01-14
•
Granted: 1980-12-09
•
Expires: 2000-01-14
Abstract
Abstract A three-dimensional photographic system includes a source of pulsed-optical radiation characterized by an output optical pulse of risetime length less than the depth resolution desired of an object to be photographed. The pulse is directed on the object; the reflected radiation from the object is collected by an array of optical lenslets (lenticular plate), which forms a corresponding array of images of the object. This array of images is streaked, for example, by a streaking image converter tube, to form a corresponding array of streaked images in accordance with the said array of images of the object as a function of time. The array of streaked images is then recorded by a photographic film camera on other recording means; the recorded film can then be analyzed or viewed with human eyes for the purpose of three-dimensional analysis or viewing of the object. Particularly one optical pulse enables a recording which can subsequently be unscrambled to yield a three-dimensional image for measurement or for binocular viewing even though the distance of the object for the viewing point is much too great for normal binocular stereoscopic perception of depth.
Inventors
- 👤 Jeofry S. Courtney-Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:56
CPC Classifications
G; G03; G03B; G03B35/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
83 words
A method for viewing a streaked, dissected image on a developed photographic film including the steps of: (a) directing light through a lenticular plate onto the film; (b) moving the film relative to the plate at a velocity u in a direction parallel to the plane of the film, the plane of the plate being substantially parallel to the plane of said film; (c) simultaneously moving the lenticular plate and the film at a velocity w perpendicular to said plane of the film.
Claim 2
Independent Claim
83 words
A method for viewing a streaked, dissected image on a developed photographic film including the steps of: (a) directing light through a lenticular plate onto the film; (b) moving the film relative to the plate at a velocity u in a direction parallel to the plane of the film, the plane of the plate being substantially parallel to the plane of said film; (c) simultaneously moving the lenticular plate and the film at a velocity w perpendicular to said plane of the film.
Claim 3
Independent Claim
83 words
A method for viewing a streaked, dissected image on a developed photographic film including the steps of: (a) directing light through a lenticular plate onto the film; (b) moving the plate relative to the film at a velocity u in a direction parallel to the plane of the film, the plane of the film being substantially parallel to the plane of said plate; (c) simultaneously moving the lenticular plate and the film at a velocity w perpendicular to said plane of the film.
Claim 4
Independent Claim
83 words
A method for viewing a streaked, dissected image on a developed photographic film including the steps of: (a) directing light through a lenticular plate onto the film; (b) moving the plate relative to the film at a velocity u in a direction parallel to the plane of the film, the plane of the film being substantially parallel to the plane of said plate; (c) simultaneously moving the lenticular plate and the film at a velocity w perpendicular to said plane of the film.
Claim 5
Dependent Claim
17 words
The method of claim 1 or 2 in which said film contains a streaked dissected image array.
Claim 6
Dependent Claim
36 words
The method of claim 3 in which said velocity u is substantially parallel to the streaks of said dissected image array, and in which said light is in the form of a parallel beam of light.
Claim 7
Dependent Claim
15 words
The method of claim 4 in which u is of the order of 8 cm/sec.
Claim 8
Dependent Claim
38 words
The method of claim 5 in which an assembly of the plate and film is moved at a velocity w in a direction perpendicular to said plane, the magnitude of w being measured with respect to an observer.
Claim 9
Dependent Claim
18 words
The method of claim 6 in which w is in the range of about 40 to 400 cm/sec.
Claim 10
Dependent Claim
23 words
The method of claim 7 in which said velocities u and w are reversed at a repetition rate of about 10 per second.
Claim 11
Independent Claim
128 words
A method for stereoscopic photography including the steps of: (a) directing a pulse of optical radiation on an object, said pulse having a risetime length less than twice a desired depth resolution of the object; (b) forming a streaked, dissected image array of the light reflected by the object, in response to said pulse, on a photographic emulsion; (c) processing said emulsion, to form a developed photographic image therein corresponding to said streaked, dissected array; (d) unscrambling the developed image in said emulsion by simultaneously moving an unscrambling lenticular plate relative to the photographic image at a velocity u along the streaked direction and moving an assembly of said plate and emulsion at a velocity w along a line of sight perpendicular to the plane of the plate.
Claim 12
Independent Claim
128 words
A method for stereoscopic photography including the steps of: (a) directing a pulse of optical radiation on an object, said pulse having a risetime length less than twice a desired depth resolution of the object; (b) forming a streaked, dissected image array of the light reflected by the object, in response to said pulse, on a photographic emulsion; (c) processing said emulsion, to form a developed photographic image therein corresponding to said streaked, dissected array; (d) unscrambling the developed image in said emulsion by simultaneously moving an unscrambling lenticular plate relative to the photographic image at a velocity u along the streaked direction and moving an assembly of said plate and emulsion at a velocity w along a line of sight perpendicular to the plane of the plate.
Claim 13
Dependent Claim
15 words
The method of claim 9 in which u is of the order of 8 cm/sec.
Claim 14
Dependent Claim
20 words
The method of claim 9 or 10 in which w is in the range of about 40 to 400 cm/sec.
Claim 15
Dependent Claim
20 words
The method of claim 11 in which the velocities u and w are simultaneously reversed at a predetermined repetition rate.
Claim 16
Dependent Claim
17 words
The method of claim 12 in which said repetition rate is about 10 per second or more.
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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |