Flash tube providing a flat peak synchronized output
AssigneeProfoto AB
InventorsAnton FALK, Ulf CARLSSON, Carl Johan GRUBBSTRÖM
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Abstract
Flash tubes for photographic use, in particular a flash tube is adapted to provide a light output adapted to FP-sync, Flat Peak. The flash tube includes a length of glass tubing enclosing a gas for use in the flash tube, a cathode inside a first end part of glass tubing and an anode inside a second end part of glass tubing. The cathode includes an element that helps to ionize the gas that is wound around the cathode, such that a spark stream starts from the upper part of the cathode and is prevented from spreading down wards on the cathode and changing the arc length during the light output adapted to FP-sync.
Claims17
A flash tube adapted to provide a light output adapted to FP-sync, Flat Peak, the flash tube comprising:
- a length of glass tubing enclosing a gas for use in the flash tube;
- a cathode fastened inside a first end part of the glass tubing;
- an anode fastened inside a second end part of the glass tubing;
- and
- an element wound around the cathode facilitating gas ionization, such that a spark stream starts from an upper part of the cathode and is prevented from spreading downwards on the cathode and changing the arc length during the light output adapted to FP-sync.
Dependencies are inferred from the claim text.