Pleasant warm, yet bright light

I have tried several LEDs; under the hot white is this, according to the LED bulb 6W LEDON G80 400lm 2800K warm white omnidirectional, the second, which I can really recommend. The light, as shown by the statement of 3000 K, warm white, but not to rotlastig but bright and friendly. The usual warm white 2700 K, including the light of a classic 60-watt light bulb, although preferred by many, but seems pretty yellow / orangestichig, and creates a true relaxing, but also somewhere cloudy and especially in the dark winter months even melancholic or even depressive mood acting. I prefer these days primarily tagweißes light (up to 6500 K; so far in sufficient luminosity but only as a compact fluorescent lamp available), but after a hard working day comes but ever the desire for a relaxing for your eyes light up. Here I have the 8-W LED Star Classic from Osram found a good compromise. Compared with the light bulb, the light acts much white, yet not colder, but friendly and very balanced. The light color is roughly comparable to that of a halogen lamp. The luminosity is 470 lumens more of a 40-W bulb comparable, but this is done largely offset by the typical retrofit LEDs forward direction of the light in a direct comparison. In a ceiling mounted lamp hanging down, this bulb can best develop.

However, anyone who sets a very warm white (2700 K or less) light color, which might seem a little light to neutral. Thanks to the declaration however, this is not a Surprise. Possibly the light should be beizeichnet rather than "warm white light", but a certain basic orientation with respect. Color temperature is too economical bulbs to assume in today's transition period from Wolfram already. Also only suitable this LED as work light, where usually a neutral to tagweißes light (4000-6500 K) is recommended as a "pick-me-light", especially warm white light for accurate color detection in the graphics area rather unsuitable generally (except Good halogen bulbs ).

Mention should also be that this led a significantly higher nominal luminosity than the Osram Parathom lamp PARA CLA40 8W WWE27 (470 instead of 345 lumens). Whether the values ​​actually agree, I can not say for lack of measurement and lack of comparative specimen of the latter LED. Even the life and robustness I can to the relatively short period of use anything to say (an update follows later if necessary).

All in all, even in terms of the price, a very recommendable lamps, which as a complete replacement for a 40 watt light bulb, limited (if only the light intensity to the front is important) can apply for 50-60 watt quite even.

Update 3. December 2011:

I have now done some measurements. And I have found that the power consumption (measured with a Profitec KD 302) located immediately after the cold start at 10.2 watts and drops to 8 Watt in about 20-30 minutes. Final value was 7.6 watts. However, the same time also took the brightness to about 78% of the initial value from (measured with a Voltcraft MS-1500 lux meter). I can not say anything because my purpose of the experimental setup is missing, so I can only indicate relative brightness changes over the total luminous flux. However, the result puts the aforementioned brightness projection of 470 lumens. If this is the initial value, the final performance is just 370 lm, which is not far from 345 lm sister Parathom lamp 8W. Due to the overall still low consumption and yet very moderate compared to other LEDs price remains at 5 stars (at fraktionärer rating maybe 4.5 star rating would be appropriate).

Fehlerteufelchen: Of course, there are not 470 lumens per watt (it would be nice, unfortunately physically impossible in white light), but 470 lumens. Now corrected.