Camera shutter device with permanent magnets
AssigneeJENOPTIK Optical Systems GmbH
InventorUwe SCHALLER
Life of this patent
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Abstract
A camera shutter device having a shutter blade which moves abruptly between a first position, in which it covers a transmission zone present between the carriers, and a second position, in which it opens up the transmission zone. On the shutter blade, there is provided a slide body which includes a displaceable permanent magnet and which is guided on a linear guide, the ends of which are assigned a respective rotatable permanent magnet. By oppositely changing the polarization direction of the rotatable permanent magnets through 180°, the displaceable permanent magnet is pulled into the first or second position.
Claims5
A camera shutter device, comprising:
- a frame having two supports arranged opposite each other,
- a linear sliding structure terminating at the supports, and
- a shutter which, guided by the action of magnetic forces along the linear sliding structure in a sliding direction with alternating directional sense, jumps between a first position, in which it covers a transmission zone present between the supports, and a second position, in which it clears the transmission zone,
- wherein:
- the shutter contains one shutter blade or two shutter blades, exactly one sliding body being fixedly arranged on the shutter blade in each case, which sliding body is formed by a displaceable permanent magnet or contains a displaceable permanent magnet and is guided on a linear guide of the linear sliding structure in each case, each end of said linear guide having a rotatable permanent magnet assigned to it, which is firmly connected to a driven shaft of a rotary drive, which driven shaft is not aligned parallel to the sliding direction, wherein the polarization direction of the rotatable permanent magnet includes a right angle with the driven shaft.
Dependencies are inferred from the claim text.