EP0054762A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Digital-marking camera attachment
Assignee: Carl Zeiss SMT GmbH
•
Filing: 1981-11-28
•
Granted: —
•
Expires: 2001-11-28
Abstract
Abstract The invention contemplates a device for directly recording upon photographic film, such as 35-mm film, data such as time and/or other identification within the exposure frame to which the data is applied. In the described embodiment, the data form is digital, luminously provided by a plurality of LED devices (46), and a fiber optics bundle (28, 29) transmits each LED-generated digit display direct to the plane in which a pressure plate (20) engages the back surface (i.e., opposite the emulsion surface) of the film. The pressure plate (20) is resiliently suspended, for gently loaded contact with film at the exposure-frame region, and all LED components and their associated fiber-optics bundles are fixedly mounted to, and therefore resiliently suspended with, the pressure plate.
Inventors
- 👤 Ludek Mlcak
- 👤 Peter Hoerenz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 11:07
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243; G03B2217/246
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
In a photographic camera wherein film to be exposed is held by a pressure plate (20) against a fixed open frame (18) in the focal plane of an exposure to be made, the pressure plate (20) being resiliently mounted with respect to said frame such that contacting adjacent surfaces of the film and pressure plate are in substantially a common plane, and wherein luminous data (21',22') pertaining to a given film exposure from a luminous-data source (46) are to be embodied in the film within the frame of the exposure, the improvement in which the pressure plate (20) has at least one aperture (21,22) in register within a portion of the exposure frame (18) and wherein means including a fiber-optics bundle (28) comprising a dense array of parallel fibers (50) is fixedly carried by said pressure plate (20) and extends through the aperture (21) and to said film-contacting plane, whereby one end of said fiber-optics bundle (28) terminates at said plane, the other end of said fiber-optics bundle terminating in a plane adjacent said luminous data (46).
Claim 2
Dependent Claim
177 words
In a photographic camera wherein film to be exposed is held by a pressure plate (20) against a fixed open frame (18) in the focal plane of an exposure to be made, the pressure plate (20) being resiliently mounted with respect to said frame such that contacting adjacent surfaces of the film and pressure plate are in substantially a common plane, and wherein luminous data (21',22') pertaining to a given film exposure from a luminous-data source (46) are to be embodied in the film within the frame of the exposure, the improvement in which the pressure plate (20) has at least one aperture (21,22) in register within a portion of the exposure frame (18) and wherein means including a fiber-optics bundle (28) comprising a dense array of parallel fibers (50) is fixedly carried by said pressure plate (20) and extends through the aperture (21) and to said film-contacting plane, whereby one end of said fiber-optics bundle (28) terminates at said plane, the other end of said fiber-optics bundle terminating in a plane adjacent said luminous data (46).
Claim 3
Dependent Claim
37 words
The improvement of claim 1, in which the luminous-data source includes LED-element meons (46) carried by said pressure plate (20) with a display surface in fixed close adjacency to said other end of said fiber-optics bundle (28).
Claim 4
Dependent Claim
51 words
The improvement of claim 1, in which the luminous-data source includes a plurality of spaced LED elements (46) carried by said pressure plate (20) at a succession of arrayed digit positions, said other end of said fiber-optics bundle (28,29) being in fixed close adjacency to the LED elements of said array.
Claim 5
Dependent Claim
59 words
The improvement of claim 2, in which said LED-element means is one of two, fixedly mounted to said pressure plate (20) and facing in opposite directions, the camera having a viewing window (24,25) adjacent said other LED-element means, and electrical means controlling the digital display of said other LED-element means to match that produced by the first-mentioned LED-element means.
Claim 6
Dependent Claim
29 words
The improvement of claim 4, in which said electrical means includes camera-exposure release control means, and a synchronizing electrical connection between said exposure-control means and said first-mentioned LED-element means.
Claim 7
Dependent Claim
30 words
The improvement of claim 4, in which said electrical means includes on interval timer, a digit-indexing control associated with said timer and in digit-indexing relation to both said LED-element means.
Claim 8
Dependent Claim
22 words
The improvement of claim 6, in which said electrical means includes camera-exposure release control means having an input connection to said timer.
Claim 9
Dependent Claim
62 words
The improvement of claim 2, in which said LED-element means is one of two luminous sources of identically the same data, the camera having a viewing window (24,25) adjacent said other source of luminous data, and electrical means controlling the transient digital display of said LED-element means for film-recording exposure while controlling the continuous display of said other source for external viewing.
Claim 10
Dependent Claim
64 words
The improvement of claim 1 in application to a roll-film camera wherein, between successive exposures, the film is transported from a supply spool to a take-up spool and via the region of contact between said pressure plate (20) and said frame, the camera having a removable back (11) spanning said spools and frame, and said pressure plate (20) being resiliently suspended from said bock.
Claim 11
Dependent Claim
126 words
The improvement of claim 9, in which said back (11) when fitted over said spools and frame fully encases film against light entry behind the film, said back comprising an inner panel having an opening (18) in registry with the portion of the exposure frame through which the luminous data is carried, said pressure plate (20) being of planiform and area overlapping all borders of the panel opening and being suspended adjacent to and on the inner side of said panel, a housing (10) forming part of said back and encasing the panel opening, and a chassis (26) within said housing and fixed to and therefore resiliently suspended with said pressure plate (20), said chassis (26) mounting said luminous-data source (46) and said fiber-optics bundle (28,29).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.