Television – Camera – system and detail – Optics
Patent
1995-08-28
2000-10-31
Ho, Tuan
Television
Camera, system and detail
Optics
348351, 348333, H04N 5232
Patent
active
061410519
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a still photographic camera which includes a lens defining a lens plane and an imaging device which defined a focal plane.
A camera of the noted kind is disclosed in DE-PS-34 33 412. The drawback of this camera is that a ground-glass plate is used as a view finder and thus as a first imaging device in the image plane, and a recording medium in the form of a film is brought into the position of the ground-glass plate in order to finally take a picture of the scene.
The object of the present invention is to provide a still photographic camera which enables simultaneous viewing of a scene as it is being photographed, wherein no mechanical movements must occur in order to go from the viewing mode into the picture taking mode; which, furthermore, can be constructed to be extremely compact which allows options which can be added without a disturbing of the compact structure, and which thus can be completed with regard to realizable operational functions extremely easily.
SUMMARY OF THE INVENTION
A transducer arrangement of optoelectrical transducer elements is used so that, in the imaging plane, the practically all functions necessary for taking pictures by the still photographic camera can be achieved by a processing of the electrical output signals from the transducer.
The lens is in supported to pivot around two axes extending perpendicularly to each other so that an optimization of the focus becomes possible without changing the perspective of the image set by means of the position of the transducer arrangement.
The perspective of the image in the position of the image plane is set initially. It is, thereby, however by all means possible to tie the transducer arrangement arrested to the casing and to select the perspective of the image by a shifting of the camera.
Furthermore, for setting the focus, the lens and/or the transducer arrangement is/are displaceable in the direction of the focus.
Preferably motor driven positioning means are used in order to set the mentioned movements of the transducer and/or the lens. By means of this the possibility is provided such as still is to be explained, to set by a judging of the focus by means of a camera computer and regress onto the positioning members, the focus of the imaging focus automatically in the sense of an automatic controlling of the focus and to optimize it, resp., via the imaging plane.
In the presently preferred embodiment the transducer arrangement is formed by CCD-transducer elements.
By the provision of a further transducer arrangement of electro-optical transducer elements, tied to the casing of the camera, a viewer image is produced electronically which enables to simultaneously view with the saving of the image the saved image.
With the same transducer arrangement furthermore, the information needed for the intercommunication between the camera computer and the operator is preferably displayed.
Because the camera in accordance with the invention is structured in a further, extremely preferred embodiment to include a window selecting unit positioned between the transducer arrangement and the further transducer arrangement in accordance, the possibility is arrived to selected a window of the scene electronically from the scene to be photographed and to subject same to a respective specific further processing. It is thereby possible, to realize an electronic in that the image window selected at the window selecting unit can be switched with a preset scale of increase or decrease onto the further transducer arrangement of optoelectronic transducer elements.
By this electronic zoom function an exchanging or adjusting of the objective will become superfluous in many cases.
A further preferred embodiment of the camera in accordance with the invention leads to the possibility of an automatic adjusting of the focus and optimization and/or a automatic setting of the illumination and/or an automatic setting of the color composition of the light of the image, resp. Obviou
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Gfeller Karl
Koch Hans Carl
Ho Tuan
Sinar AG
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