Patent attributes
There is provided a light emitting diode, LED, filament lamp (100) which provides LED filament lamp light (101). The LED filament lamp comprises at least one LED filament (102), at least one further LED (105), an at least partly transmissive envelope (107), and an optical element (108). The at least one LED filament (102) comprises a carrier (103) which has an elongated body and a plurality of LEDs (104) mechanically coupled to the carrier (103). The at least one LED filament (102) is configured to emit LED filament light (104′). The LED filament light (104′) has a first spectral distribution SI with a first color point x1,y1 and a first correlated color temperature T1. The at least one further LED (105) is configured to emit further LED light (106) which has a second spectral distribution S2 with a second color point x2,y2. The at least one LED filament (102) and the at least one further LED (105) are at least partly enclosed by the at least partly transmissive envelope (107). The optical element (108) is arranged to collimate the further LED light (106) into collimated further LED light (109). The LED filament lamp light (101) is composed of the LED filament light (104′) which has a first spatial distribution (S′1) and the collimated further LED light (109) which has a second spatial distribution (S′2). The first spatial distribution (S′1) is broader than the second spatial distribution (S′2). The first spectral distribution SI and the second spectral distribution S2 arc different and wherein one or more of (i) x1/x2>1.1, and (ii) x1/x2>1.1 and y1/y2>1.1 with x1/x2>y1/y2 applies.
