Ecosmart brand color tunable smart bulb had 95 CRI

[JoakimFlorence]

Ecosmart's color tunable "smart" LED bulb apparently could give out light with a CRI a little bit above 95.
The smart bulb interacts with a mobile phone app, to be able to adjust the settings.

The following looked at the "60 Watt equivalent" version. It was sold at Home Depot. Unfortunately this bulb seems to have been recently discontinued.

The measurements were done with an ArgyllPRO ColorMeter.

Color Temperature: 3087.0 , CRI: 95.6 ... R9 = 79.4

Color Temperature: 4264.7 , CRI: 95.8 ... R9 = 92.2

Color Temperature: 4710.4 , CRI: 95.0 ... R9 = 91.6

Color Temperature: 5952.0 , CRI: 92.8 ... R9 =83.0

Color Temperature: 2636.8 , CRI: 93.2 ... R9 = 65.8



measurements were made at 30% brightness setting

(credit for these measurements goes to member contactcr in Budgetlightforum, posted Nov 21, 2020 )

 

[JoakimFlorence]

This was the measurement from an Ecosmart dimmable filament bulb in "3000K" :

Color Temperature: 2990.3 , CRI 92.3 ... R9 = 59.5

(credit member contactcr , original post Jan 14, 2020 )


These bulbs are quite nice, come in a frosted glass bulb version. The dimmable versions are more expensive but definitely have a higher CRI level than the non-dimmable version. And they make it in 2700K, 3000K, and 5000K versions.

(Ecosmart does make 3500K and 4000K frosted glass filament bulbs but unfortunately those are different model and do not come in higher CRI )

 

[JoakimFlorence]

This review, which took spectral graph readings, suggest that the Ecosmart color tunable bulb has terrible CRI.
https://www.sevarg.net/2023/04/08/ecosmart-smart-bulb-review/ (review from April 2023)

(It looks like at 2500K, there is a strange deficiency in yellow light since the bulb is not relying so much on white LEDs, while at 3000K there appears to be no deeper red wavelengths because by then the bulb is relying nearly all on white LEDs)

The discrepancy seems strange. Perhaps this might be a different version of the color tunable bulb from Ecosmart?


This review shows the latest version of the Philips "Full Color Wi-Fi LED" is no different. It also relies entirely on white LEDs at 2700K and above. The only difference is you can see some very thin red spikes obviously from a special red additive phosphor that is being used in the white LEDs. (So based on that, I'd guess the CRI is probably around 90 )

https://www.sevarg.net/2023/03/11/philips-smart-wifi-bulbs/ (review from March 2013)

(This is different from the older model Philips Hue bulb, which used a "lime" yellow-green phosphor LED combined with a red-orange 515nm LED, which could achieve nearly 93 CRI )