Patent · US Active

Flash tube providing a flat peak synchronized output

US10310360B2 · kind B2 · utility

0Cited by

6References

20Claims

0Family size

Assignee

PROFOTO AB · SE

Inventors

Anton Falk · Huddinge, SE
Ulf Carlsson · Täby, SE
Carl Johan Grubbström · Boo, SE

Key dates

Filing date	Feb 25, 2016
Grant date	Jun 4, 2019
Priority date	—
Expiry date	Feb 25, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG03B2215/0578
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.