Patent · US Active

Gas-discharge lamp

US9711342B2 · kind B2 · utility

0Cited by

13References

18Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Lukas Kuepper · Aachen, DE
Michael Haacke · Aachen, DE
Klaus Schoeller · Aachen, DE

Key dates

Filing date	May 19, 2011
Grant date	Jul 18, 2017
Priority date	—
Expiry date	May 19, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention describes a gas-discharge lamp (1) comprising a vessel (5), which vessel (5) is partially coated with at least one longitudinal stripe (SH, SH′) arranged on the surface of the vessel (5) below a horizontal plane (P) through a longitudinal axis (X) through the centre of the lamp (1) such that, on each side of the lamp, an angle (βH1, βH2) subtended at the lamp centre by the horizontal plane (P) and an upper edge (16, 17) of the longitudinal stripe (SH, SH′) on that side of the lamp comprises at least 10°, more preferably at least 13°, most preferably at least 15°. The invention also describes a reflector (8) for a lamp (1), comprising a reflective interior surface realized to deflect light (L20A, L20B, L21A, L21B) originating from the lamp (1) outward to give a specific beam profile (3) with a bright/dark cut-off line (31) and a shoulder (32), and wherein the lamp (1), in particular a lamp (1) according to any of claims 1 to 12, is positioned horizontally in the reflector (8), and wherein the reflective interior surface comprises at least one beam-shaping region (81 A, 81B) realised to deflect a portion (L21A, L21B) of the light (L20A, L20B, L21A, L21B), emitted from t…

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