Samsung LH351D color testing

3 posts / 0 new
Last post
maukka
maukka's picture
Offline
Last seen: 17 min 6 sec ago
Joined: 12/31/2015 - 04:15
Posts: 1164
Location: Finland
Samsung LH351D color testing

Kiriba-ru sent me a Samsung LH351D for testing.

The emitter tested is a model number SPHWHTL3DA0CF2R1W2 with 5000K, CRI70 and rated luminous flux of 460lm at 1050mA. It fits on a XP/219/319 MCPCB. Now I’d like to test the higher CRI options, which are also plentiful.

I tested it with the small OP reflector from the Reylight Pineapple. It was sitting on an MCPCB, so no heatsinking and no stress testing at high amps. I’ll put it later in some light

Visually I’d rate it close to the Nichia 219C 5000K R8000. Very nice and neutral white tint (4900K, duv 0.002), no bad sudden tint shifts, rings or discolorations in the beam, mostly a big pure white hotspot that fades quickly. Just a bit cooler on the outer edge. The warmer/yellower corona is not very noticeable, much better than on the new Crees.

Tint with output current of 100-1000mA

Tint in different parts of the beam

CRI data on rated current of 1050mA

Edited by: maukka on 11/29/2017 - 14:33
maukka
maukka's picture
Offline
Last seen: 17 min 6 sec ago
Joined: 12/31/2015 - 04:15
Posts: 1164
Location: Finland

On the other hand, it doesn’t play nice with a big SMO reflector from the Eagle Eye X7. Wide and very visibly green corona around the nice hotspot.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 52 min 32 sec ago
Joined: 01/17/2016 - 02:34
Posts: 1634
Location: Russia

Texas_Ace should get a couple of same leds in a week. I would like to see dead test. I know they are good under 1A (better than XP-G3?) but probably far away over 5A.

Need a vlogger for machine accessories reviews