US3882512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera system with on-frame digital recording means
Assignee: TIMELAPSE Inc
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Filing: 1973-06-25
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Granted: 1975-05-06
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Expires: 1993-06-25
Abstract
Abstract A photographic data recording system including a camera having means for superposing digital data onto the frames of the film used with the camera so that the data will be viewable within the confines of the frames. In a preferred embodiment, the system utilizes a digital clock having display means whose image is directed onto the film frames by way of the optical path extending toward the film plane. The system is especially suitable for time lapse filming of quantitative, time-related events.
Inventors
- 👤 Franklin B Lawrence
- 👤 Robert E Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B15/00; G03B15/006; G03B17/245; G08; G08G; G08G1/00; G08G1/01; G08G1/052; G08G1/054; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
204 words
A camera system comprising: a single lens reflex camera having an optical axis, an actuatable shutter mechanism, a film plane intersecting the optical axis, a first lens operable to focus light rays to substantially a standard infinity focus, an optical device having a partially reflective face between the first lens and the film plane, said face being transmissive to the light rays from said first lens, a second lens between said optical device and said film plane, and means for receiving a film having a plurality of image frames thereon and for placing the film at said film plane to permit the image frames to move successively into optical alignment with said optical axis, whereby light rays representing the image of an external object can be directed into the camera through said first lens, said optical device and said second lens and onto an image frame aligned therewith; an electronic digital clock circuit; an actuatable visual display device, said circuit being coupled with said shutter mechanism and said display device for simultaneously actuating the same; and means optically coupled to said optical device for directing an image of said display onto said face for reflection toward an image frame aligned with said lens assembly.
Claim 2
Dependent Claim
204 words
A camera system comprising: a single lens reflex camera having an optical axis, an actuatable shutter mechanism, a film plane intersecting the optical axis, a first lens operable to focus light rays to substantially a standard infinity focus, an optical device having a partially reflective face between the first lens and the film plane, said face being transmissive to the light rays from said first lens, a second lens between said optical device and said film plane, and means for receiving a film having a plurality of image frames thereon and for placing the film at said film plane to permit the image frames to move successively into optical alignment with said optical axis, whereby light rays representing the image of an external object can be directed into the camera through said first lens, said optical device and said second lens and onto an image frame aligned therewith; an electronic digital clock circuit; an actuatable visual display device, said circuit being coupled with said shutter mechanism and said display device for simultaneously actuating the same; and means optically coupled to said optical device for directing an image of said display onto said face for reflection toward an image frame aligned with said lens assembly.
Claim 3
Dependent Claim
25 words
A camera system as set forth in claim 1, wherein said device includes a plane parallel entrant-exit face prism having an inclined, partially reflective face.
Claim 4
Dependent Claim
35 words
A camera assembly as set forth in claim 2, wherein is included a mirror between said face and said display, said mirror being disposed to direct the light rays from said display onto said face.
Claim 5
Dependent Claim
103 words
A camera assembly as set forth in claim 1, wherein said camera has a housing having an opening through the bottom thereof, there being a second housing below said camera housing, a power supply for said circuit, said display device being in said second housing, there being mirror means in the second housing for directing the light rays from said device through said opening and into said camera housing, and including a third housing at one side of said camera, the circuit being in the third housing and a fourth housing below the third housing, said power supply being in the fourth housing.
Claim 6
Dependent Claim
24 words
A camera as set forth in claim 1, wherein said circuit has means for varying the rate at which said shutter mechanism is actuated.
Claim 7
Dependent Claim
26 words
A camera assembly as set forth in claim 1, wherein said receiving means includes structure defining a compartment for receiving a film cartridge containing 8mm film.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |