Light is not decoration.
It is a biological signal.
Light is not decoration.
It is a biological signal.
Light is not decoration.
It is a biological signal.
THE SCIENCE
THE SCIENCE
THE SCIENCE
Light is not decoration.
Light is not decoration.
Light is not decoration.
It is a biological signal.
It is a biological signal.
It is a biological signal.
THE BODY CLOCK
You have a clock in nearly every cell
Deep in the brain sits the suprachiasmatic nucleus – a cluster of neurons that acts as the body's master pacemaker. It runs a near-24-hour cycle and synchronises biological timing across every organ and tissue.
Circadian markers
across 24 hours
A roughly twenty-four hour rhythm sets when you feel alert, when hormones release, how you sleep and repair. Left in the dark and it drifts. One signal keeps it aligned: light.
Your eyes do
more than see
Some cells in the eye do not form images. They tell the clock how bright the world is and what colour it is. They answer most to cool, blue-white morning light, and barely at all to warm amber and red.
THE BODY CLOCK
You have a clock in nearly every cell
Deep in the brain sits the suprachiasmatic nucleus – a cluster of neurons that acts as the body's master pacemaker. It runs a near-24-hour cycle and synchronises biological timing across every organ and tissue.
Circadian markers
across 24 hours
A roughly twenty-four hour rhythm sets when you feel alert, when hormones release, how you sleep and repair. Left in the dark and it drifts. One signal keeps it aligned: light.
Your eyes do
more than see
Some cells in the eye do not form images. They tell the clock how bright the world is and what colour it is. They answer most to cool, blue-white morning light, and barely at all to warm amber and red.
THE BODY CLOCK
You have a clock in nearly every cell
Deep in the brain sits the suprachiasmatic nucleus – a cluster of neurons that acts as the body's master pacemaker. It runs a near-24-hour cycle and synchronises biological timing across every organ and tissue.
Circadian markers
across 24 hours
A roughly twenty-four hour rhythm sets when you feel alert, when hormones release, how you sleep and repair. Left in the dark and it drifts. One signal keeps it aligned: light.
Your eyes do
more than see
Some cells in the eye do not form images. They tell the clock how bright the world is and what colour it is. They answer most to cool, blue-white morning light, and barely at all to warm amber and red.
THE BODY CLOCK
You have a clock in nearly every cell
Deep in the brain sits the suprachiasmatic nucleus – a cluster of neurons that acts as the body's master pacemaker. It runs a near-24-hour cycle and synchronises biological timing across every organ and tissue.
Circadian markers
across 24 hours
A roughly twenty-four hour rhythm sets when you feel alert, when hormones release, how you sleep and repair. Left in the dark and it drifts. One signal keeps it aligned: light.
Your eyes do
more than see
Some cells in the eye do not form images. They tell the clock how bright the world is and what colour it is. They answer most to cool, blue-white morning light, and barely at all to warm amber and red.
THE PROBLEM
THE PROBLEM
The body asks for different light
at different hours
The body asks for different light at different hours
The body asks for different light at different hours
The body asks for different light
at different hours
The body asks for different light
at different hours
Most light is built to be seen, not to be lived under. A standard light stays roughly the same all day. So it is too dim for the morning the body needs, and too bright for the night it needs. One fixed light cannot do both jobs.
Most light is built to be seen, not to be lived under. A standard light stays roughly the same all day. So it is too dim for the morning the body needs, and too bright for the night it needs. One fixed light cannot do both jobs.
LIGHT ACROSS THE DAY
LIGHT ACROSS THE DAY
What a healthy day of light looks like
What a healthy day of light looks like
What a healthy day of light looks like
There is no single correct light. There is a correct light for each phase. These are the jobs light is meant to do.
Four moments in the day when light should change –
and how LONVIA responds in each,
from morning clarity to evening calm.
Four moments in the day when light should change –
and how LONVIA responds in each,
from morning clarity to evening calm.
MORNING
Wake
The body's most critical light moment. A strong signal clears the night hormone, raises cortisol, and sets the biological clock for everything that follows.
MORNING
Wake
Cortisol rises, melatonin clears. LONVIA delivers a high melanopic dose. The signal the body needs to start.
MORNING
Wake
People exposed to bright morning light (1,000+ lux) fell asleep 46 minutes earlier with no other change to routine.
The morning signal sets
the evening outcome.
MORNING
Wake
Cortisol rises, melatonin clears. LONVIA delivers a high melanopic dose. The signal the body needs to start.
DAYTIME
Sustain
Full-spectrum light holds alertness, mood and cognitive rhythm through working hours. Without it, the clock begins to drift.
DAYTIME
Sustain
Full-spectrum light holds alertness, mood and cognitive rhythm through working hours. Without it, the clock begins to drift.
DAYTIME
Sustain
The average person spends 90% of their time inside – under light that is too dim and too spectrally narrow to support a healthy circadian cycle. The home is the primary exposure environment.
DAYTIME
Sustain
Full-spectrum light holds alertness, mood and cognitive rhythm through working hours. Without it, the clock begins to drift.
EVENING
Wind down
Warm, amber light lets melatonin rise on schedule. The cells that control the body clock barely respond to it, as nature intended.
EVENING
Wind down
Warm, amber light lets melatonin rise on schedule. The cells that control the body clock barely respond to it, as nature intended.
EVENING
Wind down
Even dim light in the evening – as low as 10 lux – can suppress melatonin onset by up to 90 minutes and triple the time it takes to feel sleepy. Most living rooms operate at 100–300 lux.
EVENING
Wind down
Warm, amber light lets melatonin rise on schedule. The cells that control the body clock barely respond to it, as nature intended.
NIGHT
Rest
Almost any light reads as daytime to the biological clock. The goal is near-darkness: visible to the eye, silent to the clock.
NIGHT
Rest
Almost any light reads as daytime to the biological clock. The goal is near-darkness: visible to the eye, silent to the clock.
NIGHT
Rest
Even dim light in the evening – as low as 10 lux – can suppress melatonin onset by up to 90 minutes and triple the time it takes to feel sleepy. Most living roomsoperate at 100–300 lux.
NIGHT
Rest
Almost any light reads as daytime to the biological clock. The goal is near-darkness: visible to the eye, silent to the clock.
THE METRIC THAT MATTERS
THE METRIC THAT MATTERS
Lux measures brightness.
mEDI measures biology
Lux measures brightness.
mEDI measures biology
Lux measures brightness.
mEDI measures biology
Lux measures brightness.
mEDI measures biology
Lux tells you how bright a room looks. It says nothing about effect. mEDI measures the light the clock actually responds to. The two are not the same, as the curves below show.
Lux tells you how bright a room looks. It says nothing about effect. mEDI measures the light the clock actually responds to. The two are not the same, as the curves below show.
WHY WE BUILT THIS
WHY WE BUILT THIS
One lamp, engineered to the science
One lamp, engineered to the science
One lamp, engineered to the science
Most light products address one phase of the day and approximate the rest. LONVIA was built to do something more demanding — the biologically correct light at every hour.
Morning, daytime, evening, night. Each phase calibrated precisely, not adjusted for convenience.
No shortcuts in the spectrum. No compromises in the engineering. One lamp. The full biological day. Built properly.
Most light products address one phase of the day and approximate the rest. LONVIA was built to do something more demanding — the biologically correct light at every hour.
Morning, daytime, evening, night. Each phase calibrated precisely, not adjusted for convenience.
No shortcuts in the spectrum. No compromises in the engineering. One lamp. The full biological day. Built properly.
THE RESEARCH
Most light is built to be seen,
not to be lived under
A consensus of circadian scientists put numbers to it.
These thresholds describe the goal for any person, in any room.
Light, temperature, and environment
don't just affect how comfortable
a space feels – they govern your sleep, cognition, and long-term health.
The evidence is precise.
> 0
> 0
Daytime · mEDI
The minimum biological light the body needs through the day to hold a rhythm.
People exposed to bright morning light (1,000+ lux) fell asleep 46 minutes earlier with no other change to routine.
The morning signal sets
the evening outcome.
Brown et al., 2022
< 0
< 0
Before sleep · mEDI
The ceiling in the hours before bed, low enough to let the natural wind-down begin.
The average person spends 90% of their time inside – under light that is too dim and too spectrally narrow to support a healthy circadian cycle. The home is the primary exposure environment.
Brown et al., 2022
Dark
Night
As close to no biological signal as the room allows, so the clock is left undisturbed.
Even dim light in the evening – as low as 10 lux – can suppress melatonin onset by up to 90 minutes and triple the time it takes to feel sleepy. Most living rooms
operate at 100–300 lux.
Published consensus
The standard for measuring melanopic light
Which light suppresses the night hormone
How sensitive the clock is to evening light
Measuring light in the melanopsin age
Recommended light for day, evening and night
Daylight at work, better sleep at home
FOUNDING CIRCLE
Reserve the first LONVIA Lamp
200 founding members. €1,295.
After that, €1,495.
First deliveries March 2027.
200 founding members. €1,295.
After that, €1,495.
First deliveries March 2027.
Reserve now. Pay in January.
Receive March 2027.
FOUNDING CIRCLE
Reserve the first
LONVIA Lamp
200 founding members. €1,295.
After that, €1,495.
First deliveries March 2027.
200 founding members. €1,295.
After that, €1,495.
First deliveries March 2027.
Reserve now. Pay in January.
Receive March 2027.
FOUNDING CIRCLE
Reserve the first LONVIA Lamp
200 founding members. €1,295.
After that, €1,495.
First deliveries March 2027.
200 founding members. €1,295.
After that, €1,495.
First deliveries March 2027.
Reserve now. Pay in January.
Receive March 2027.