Patent US3675552A successfully refreshed from Google Patents.
US3675552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera with adjustment-indicating location
Assignee: Voigtlander AG
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Filing: 1969-09-22
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Granted: 1972-07-11
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Expires: 1989-09-22
Abstract
Abstract A camera which is provided in the region of its viewfinder with a location where an indication of the adjustment of the camera can be read. For this purpose the camera is provided with a light-conducting body having a light-receiving surface to receive light from the exterior of the camera and a light-discharging surface from which light moves beyond this body to be seen by the operator. This light-discharging surface of the light-conducting body has a configuration which enables it to form in itself the structure for indicating the adjustment of the camera.
Inventors
- 👤 Friedrich Papke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:27
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B17/20; G03B19/00; G03B19/02; G03B19/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
In an adjustable camera having a viewfinder provided with an ocular, a light-conducting body having a light-receiving surface for receiving exterior light and a light-discharging surface from which the light travels from said body, said body being formed in a frustoconical configuration having a large end forming said light-receiving surface and a small end forming said lightdischarging surface, said small end being annularly shaped, said body being formed at said small end with an indentation defining the inner edge of said annular light-discharging surface; a pointer movable with respect to said light-discharging surface so that the relative position of said pointer and said annular light-discharging surface indicates the position of said pointer to provide at least part of an indication of the adjustment of the camera; and means coacting with said body for rendering an image of said light-discharging surface visible through said ocular.
Claim 2
Dependent Claim
144 words
In an adjustable camera having a viewfinder provided with an ocular, a light-conducting body having a light-receiving surface for receiving exterior light and a light-discharging surface from which the light travels from said body, said body being formed in a frustoconical configuration having a large end forming said light-receiving surface and a small end forming said lightdischarging surface, said small end being annularly shaped, said body being formed at said small end with an indentation defining the inner edge of said annular light-discharging surface; a pointer movable with respect to said light-discharging surface so that the relative position of said pointer and said annular light-discharging surface indicates the position of said pointer to provide at least part of an indication of the adjustment of the camera; and means coacting with said body for rendering an image of said light-discharging surface visible through said ocular.
Claim 3
Dependent Claim
46 words
The combination of claim 1 and wherein aid body is covered at its exterior surface between said end surfaces and at said indentation with a coating which prevents light from entering or leaving through said coating and which reflects light into the interior of said body.
Claim 4
Dependent Claim
157 words
In an adjustable camera having a viewfinder provided with an ocular, a light-conducting body having a light-receiving surface for receiving exterior light and a light-discharging surface from which the light travels beyond said body, said body being formed with a pair of spaced rectangular areas defining between themselves a gap and said light-discharging surface, said body being further formed with a notch defining said gap, and interior reflecting surfaces situated on opposite sides of said gap for reflecting light entering said body through said light-receiving surface through said rectangular areas defining said light-discharging surface of said body; and a pointer movable with respect to said light-discharging surface so that the relative position of said pointer and said light-discharging surface indicates the position of said pointer and provides at least part of an indication of the adjustment of the camera; and means coacting with said body for rendering an image of said light-discharging surface visible through said ocular.
Claim 5
Dependent Claim
157 words
In an adjustable camera having a viewfinder provided with an ocular, a light-conducting body having a light-receiving surface for receiving exterior light and a light-discharging surface from which the light travels beyond said body, said body being formed with a pair of spaced rectangular areas defining between themselves a gap and said light-discharging surface, said body being further formed with a notch defining said gap, and interior reflecting surfaces situated on opposite sides of said gap for reflecting light entering said body through said light-receiving surface through said rectangular areas defining said light-discharging surface of said body; and a pointer movable with respect to said light-discharging surface so that the relative position of said pointer and said light-discharging surface indicates the position of said pointer and provides at least part of an indication of the adjustment of the camera; and means coacting with said body for rendering an image of said light-discharging surface visible through said ocular.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |