| 摘要 |
<p>The Technical area, under which this invention belongs, is the photographing of 4 images using a device's video signal that uses x-ray film, an incorporated monitor, and a photographic system with four lenses. Current photographic systems in use of video images use an electronic circuit for control of the image exposure sequence to the film, and also four lenses and a shutter. My device replaces these lenses with shutters, with simple -always open- lenses, and with a suitable rotating disc having two openings for control of film exposure time. Control of the exposure sequence is achieved by five micro switches, opened and closed by a cam positioned on the disc. Thereby, the mechanical degradation is minimised, as well as the electronic malfunctions in the photographic system. It is used primarily for ultrasound medical devices in clinics, hospitals, etc.</p> |
