Human-centric Lighting

SolutionsLight for Circadian Rhythm

Samsung LM302N DAY & LM302N NITE

Melanopic spectra is designed for better effectiveness and light quality

Conventional White LEDLM302N DAY LM302N NITE

High SPD* at Cyan → High M/P ratio** Low SPD at Cyan→ Low M/P ratio

Melanopic Sensitivity

for more energetic moments for more relaxing moments

* SPD: Spectral Power Distribution

780730680630580530480430380 780730680630580530480430380

** M/P Ratio: Melanopic/Photopic Ratio

780730680630580530480430380

Higher M/P ratio by directly boosting cyan enhances melatonin suppression levels

125%

120%

124%

130%

127%

124%

0.40

0.60

0.80

1.00

1.20

1.40

3000K 3500K 4000K 5000K 5700K 6500K

M/P

R

atio*

Conventional LED

* M/P Ratio: Melanopic/Photopic Ratio

LM302N DAY

LM302N DAY

LM302N NITE

77%

80%

80%

87%

88%

90%

0.10

0.21

0.31

0.42

0.52

0.63

1800K 2200K 2700K 3000K 3500K 4000K

M/P

R

atio*

Lower M/P ratio by directly controlling cyan enhances melatonin secretion levels

* M/P Ratio: Melanopic/Photopic Ratio

780730680630580530480430380

Conventional LED LM302N NITE

Key Considerations

* M/P Ratio: Melanopic/Photopic Ratio

** MDEI: Melanopic Daylight Equivalent Illuminance

Circadian

(M/P ratio*, MDEI**)

Eye Safety

(Blue light hazard)

Color Quality

(CCT, CRI)

Reliability

(Lifetime)

Efficacy

(lm/W)

There are key considerations in human-centric lighting to being a practical lighting

0

20

40

60

80

100

M/P Ratio

Efficacy

LifetimeCRI

Eye Safety

(BLH-1)

LM302N DAY

Controlling direct-cyan realizes well balanced energizing lighting solution

■ LM302N DAY

Blue Chip + Cyan Chip

■ Company A

nUV Chip + Blue Phosphor

■ Company B

Blue Chip + Short Green Phosphor

BLHMelanopicPhotopic

LM302N NITE

Controlling direct-cyan realizes well balanced relaxing lighting solution

0

20

40

60

80

100

M/P Ratio-1

Efficacy

LifetimeCRI

Eye Safety

(BLH-1)

BLHMelanopicPhotopic■ LM302N NITE

Blue Chip + Narrow Green Phosphor

(Cyan gap)

■ Company C

nUV Chip + Narrow Green Phosphor

(Cyan gap)

■ Conventional LED

Conventional Warm White

Clinical Test

• Subjects: 30 individuals from 20s to 50s

• Test Period: April 2019 – February 2020

• Conditions: 3 days and 2 nights under each lighting type*

Daytime (5000K, 500 lux), Nighttime (2200K, 190 lux)

※ Performed under human-centric lighting and conventional lighting in random order

Approved by IRB*

* IRB: Institutional Review Board

Melatonin levels measured under LM302N DAY & LM302N NITE

Clinical Test: Melatonin Level

0

5

10

15

20

25

12 13 14 15 16 17 18 19 20 21 22 23 24 01 02 03 04 05 06 07 08 09 10 11 12

Day (5000K, 500 lux) Day (5000K, 500 lux)Night (2200K, 190 lux) Turned Off

18 %

Suppression

5 %

Secretion

Sleep

Conventional LED

Norm

aliz

ed M

ela

tonin

Level (p

g/m

L)

Time of Day (h)

Melatonin level was 18% lower during the day and 5% higher at night

LM302N DAY + LM302N NITE

Clinical Test: Concentration & Sleep Level

Conventional LED

0 20 40 60 80

Sudoku test

0 50 100 150 200 250 300

d2 test

3% ↑

10% ↑

Rela

ted M

ela

tonin

Level

Time of Day (h)

18 20 22 24 02 04 06 08 10 12

Max

(100%)

DLMO*

(25%)

04:06 04:34

23:00 23:52

LM302N DAY LM302N NITE52-min. faster time to deep sleep3-10% higher concentration level

* DLMO: Dim Light Melatonin Onset (25% of melatonin max.)

※ Melatonin Real Data Fitting

Score

Score

Conventional LED LM302N NITELM302N DAY

Applications: LM302N DAY

LM302N DAY 3000K – 6500K

Conventional LED Application: Office, School, Factory, Gym, etc.

1800

2200

27003000

3500

4000

6500

57005000

4000

3500

3000

MD

EI (l

ux)

CCT (K)

Maximizing energizing effects under various CCTs

Applications: LM302N NITE

LM302N NITE 1800K – 4000K

6500

57005000

4000

3500

3000

1800

2200

27003000

3500

4000

CCT (K)

MD

EI (l

ux)

Conventional LED Application: Meditation Class, Home, Accommodation, Yoga Studio, etc.

Maximizing relaxing effects under various CCTs

Applications: LM302N DAY & LM302N NITE

LM302N DAY (5000K) + LM302N NITE (2700K)

CCT (K)

6500

57005000

4000

3500

3000

1800

2200

27003000

3500

4000

Conventional LED Application: Healthcare Institutions, Residences, etc.

MD

EI (l

ux)

Maximizing circadian entrainment

Applications: LM302N DAY & LM302N NITE

LM302N DAY (3000K) + LM302N NITE (3000K)

CCT (K)

6500

57005000

4000

3500

3000

1800

2200

27003000

3500

4000

Conventional LED Application: Residences, Healthcare Institutions, etc.

MD

EI (l

ux)

Naturally optimizing circadian entrainment without any notice

Thank you