Circadian Optics · $$ · Updated March 3, 2026
Lattis
Ranks #20 of 57 for melanopic output, below the 10,000 lux benchmark at 1 ft. No flicker at any setting.
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Is it strong enough?#20 of 57
No. Only 45% of the 10,000 lux benchmark at 1 ft.
4,475 m-EDI at 1 ft · 1,215 at 2 ft
Is it comfortable to sit in front of?10th harshest
Mostly. Moderate glare.
245 at 1 ft · 67 at 2 ft · median 112
Does it flicker?No risk
No, at full power or dimmed.
1.1% modulation at max · 1.2% dimmed
Flicker index
0.0012
SVM
0.003
What does the light look like?6184K
Cool daylight, decent color.
CRI Re 83 · R9 29 (weak deep reds)
2700K warm7500K cool
All test data
Light outputMeasured at 1 ft and 2 ft
m-EDI
4,475
1,215 at 2 ft
Lux
4,915
1,345 at 2 ft
CLa
7,915
1,905 at 2 ft
Glare
245
67 at 2 ft
m-EDI 4,475 at 1 ft, 1,215 at 2 ft
Median 3,43010,000 benchmark2 ft1 ft
Glare 245 at 1 ft, 67 at 2 ft
Median 1122 ft1 ft
SpectrumOutput at the highest setting
Melanopic DER
0.91
m-EDI per lux. Daylight (D65) is 1.0.
CCT
6184K
Fixed
Gap from natural light
29%
Far. Average spectral difference (ASD) from daylight at the same color temperature, 425 to 690 nm.
Lamp outputBody-clock zone (melanopic, CIE S 026)Natural light, same color temperature
FlickerGreen is safe, amber is acceptable, red is past the limit
Full powerDimmed (2 of 3 (67%))
Percent flicker
1.1% · 1.2%
Flicker index
0.0012 · 0.0038
SVM
0.003 · 0.003
PstLM
0.053 · 0.110
Assist Mp
0.039 · 0.063
Waveform, 1 second
A flat line near 1.0 means steady light.
Color renderingHow accurately colors and skin tones look under this lamp
CRI Re
83
R9 (deep red)
29
TM-30 Rf
85
TM-30 Rg
95
Slightly desaturated (100 is neutral)
Specifications
- Form factor
- Desktop
- Brightness
- 3 levels
- Color temperature
- Fixed
- Power
- 20 W
- Voltage
- 100-240V
- Cord length
- 7.3 ft
- Mounting
- None
- Extra features
- None
- Available in
- United States, Canada, European Union
