| 摘要 |
Dual video and still-film camera embodying video recorder camera technology in two popular types of still-film camera: single-lens reflex (SLR) (3) and compact (18). The most advanced digital image-sensing semiconductor chip (charge-coupled device or CCD) (4, 22) and circuit board (8, 24), as well as other functional video camera components, are combined with the conventional apparatus of the still-film camera to support the video and still-film modes of photography in a single camera casing. By means of a manual switch (9, 25) or, as an alternate embodiment, an electrical switch, the user can extend the digital image sensor (4, 22) into the light-image line of sight in order to activate video operation or can retract the image sensor in order to allow still-film operation unimpeded by the video apparatus. In a third configuration - SLR reflex-type dual camera - the digital image-sensing semiconductor chip (charge-coupled device or CCD) is mounted in a fixed position within a vertical focal chamber (34) projecting upward from the main chamber behind the camera lens (6). Replacing the conventional SLR prism viewfinder, the focal chamber houses the CCD (4), a fixed focusing lens (37), a glass focusing screen (36), and a hinged focal mirror (14). These are positioned in a vertical or stack position at mathematically-calculated distances from each other to maximize image resolution during the time of video operation. |
