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CLARK COFFEE YELLOW

109,00€

Our glasses, scientifically designed and manufactured to block blue and green light, not only protect you from harmful light, they also make you look great while wearing them!

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The lens uses a patented filtering technology to block 70% of blue light in the lower range of 400 to 455 nanometers; this is the most energetic and harmful type of light emitted by screens and lighting. More importantly, it allows all the beneficial blue light in the upper part of the spectrum (455-500 nm) to pass through, which is essential during the day for optimal hormone production, energy, a positive mood, and motivation.

The lenses filter 70% of blue light across the entire blue light spectrum (400 nm – 500 nm), providing optimal protection to eliminate light sensitivity, migraines, eye strain, tired and sore eyes, headaches or migraines caused by both screen use and bright LED or fluorescent light at home or in the workplace.

To ensure you have protection both day and night, we recommend that you also use our RED LENS at night to ensure a deep and restful sleep.

Protect your vision and well-being with scientifically designed, comprehensive solutions.

Lens Measurements: 46
Bridge Measurements: 22
Temple Measurements: 145

Pack of 2 glasses save a 15% on the second unit.

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Clark Series · Yellow Lens

Clark Series
LenteYellow.

Name: CLARK COFFEE YELLOW
Brand: Nice Mood
Price: 109.00 EUR
Availability: InStock

Yellow lens certified under EN ISO 12312-1:2022, AS/NZS 1067.1:2016 and ANSI Z80.3:2018. 66.41% light transmission with 37.21% blue light block — suitable for daytime driving and all-day use with full UV400 protection.

66.41%Luminous transmittance Tv

CAT 1Categoría de filtro

3 PASSInternational standards

CLARK

37.21%Tsb · blue light blocking

UV4000.00% UV transmission

TV 66.41% · Cat 1

ANSI · EN ISO · AS/NZS

UV400 · 0.00% UV

0%TV broadcast

—Grape transmitted

0Categoría filtro

0%Tsb blue light block

UV400Total UV protection

Tecnología de lente

How does it protect
your vision

The Clark yellow lens selectively filters blue-violet light while maintaining 66% transmission—perfect for everyday use, screens, and driving without sacrificing visual clarity.

Blue light filter 37.21%

Tsb 37.21% in the 380–500nm band. Significantly reduces exposure to blue light from screens, LEDs, and artificial light, alleviating eye strain during long hours in front of a monitor.

Full UV400 protection

UVA (315–380nm) 0.00% and UVB (280–315nm) 0.00%. Complete UV blocking certified under three international standards. No UV transmission of any kind.

Suitable for driving

Certified for road use under EN ISO 12312-1:2022. Q Red 1.18, Q Yellow 1.13, Q Green 0.78 — correct recognition of all traffic signals guaranteed by standard.

High contrast and clarity

Tv 66.41% — transmission that enhances visual contrast in variable light conditions. The yellow lens improves definition on cloudy days, in rain, and in low light conditions.

Clark Series · Uses

For each
time of day

The red R2251 lens combines extreme UV protection with a bold and distinctive aesthetic. Designed for those who don't compromise on style or protection.

💻

Pantallas y trabajo

Tsb 37.21% filters blue light from monitors and LEDs. It reduces eye strain during long working hours without distorting screen colors.

🚗

Daytime driving

Certified for road use under EN ISO 12312-1:2022. Tv 66.41% with guaranteed signal recognition — red, yellow and green.

🌆

Daily city life

Cat 1 for all-day use. 100% UV400 blocked. From indoors to outdoors without needing to change glasses.

Cloud

Cloudy days and rain

The yellow lens enhances contrast in low light conditions. It improves visual definition in rain, fog, and overcast skies.

Certified Technical Data

Optical performance
measured and certified

Values of the certification report under three international standards. All measurements performed by an accredited laboratory.

Spectral band transmission

UV (280–380 nm)

0.00%✓ BLOCKED

Azul (380–500nm)

37.21%FILTERED

Verde (475–650nm)

39.81%✓ Tmin

Visible (TV)

66.41%CAT 1

Red signal

79.90%✓ APROBADO

Signal yellow

74.51%✓ APROBADO

Green light

61.57%✓ APROBADO

EN ISO 12312-1:2022PASS ✓

Filter category: 1
Tv: 66.41% PASS ✓
Q Red LED/INCT: 1.18 / 1.18 PASS ✓
Q Yellow LED/INCT: 1.13 / 1.10 PASS ✓
Q Green LED/INCT: 0.78 / 0.96 PASS ✓
Q Blue LED/INCT: 0.65 / 0.78 PASS ✓
Road traffic: SUITABLE ✓

AS/NZS 1067.1:2016PASS ✓

Category: 1
Tv: 66.41% PASS ✓
Tmin (475–650nm): 39.81% PASS ✓
Tsuvb (280–315nm): 0.00% PASS ✓
Tsb (380–500nm): 37.21% PASS ✓
Road driving: REF. ✓

ANSI Z80.3:2018PASS ✓

Category: Cosmetic / Shield Light
Tc: 66.56% PASS ✓
Red Transmitted Signal: 79.90% PASS ✓
UVB / UVA: 0.00% / 0.00% PASS ✓
CIE D65 (x,y): 0.370 · 0.381

Clark Series · Features

All you need
in a lens

The yellow Clarks combine complete UV protection, effective blue light filtration, and road certification in an all-day use lens.

🛡️

UV400 · 0.00% transmittance

Total UV Block. Tsuva 0.00% and Tsuvb 0.00% verified under all three standards. Maximum protection against UV radiation, without exception.

🔴

Certified for driving

Suitable for road use under EN ISO 12312-1:2022. Correct recognition of red, yellow, green, and blue signals — verified with LED and incandescent light sources.

🌞

Blue light filter 37.21%

Tsb 37.21% in 380–500nm band. Effective blue light blocking from screens and artificial light, ideal for long hours in front of a computer.

🎨

Category 1 · Full Day

TV 66.41% — ideal transmission for all-day use indoors and outdoors in variable light. No need to change glasses.

⚡

CIE D65 calibrated color

CIE D65 (x:0.370, y:0.381), L*84.31, a*5.65, b*26.98. Color profile calibrated to maintain natural environmental perception with the characteristic warm yellow tint.

🌍

Triple global certification

EN ISO 12312-1:2022 (Europe), AS/NZS 1067.1:2016 (Australia/NZ) and ANSI Z80.3:2018 (USA). Approved in major international markets.

Complete technical specifications

Specifications
of the Yellow Clark lens

Transmisión óptica

Luminous transmittance Tv: 22.03%
Blue light Tsb (380–500nm): 0.27%
Blue light Tsb blocked: 99.7%
Red Tsig: 91.44%
Yellow Tsig: 44.12%
Red Tsig: 91.44%

UV protection and certifications

UVB (280–315nm): 0.00% ✓
UVA (315–380nm): 0.00% ✓
UV400: PASS ✓
EN ISO 12312-1:2022: PASS ✓
AS/NZS 1067.1:2016: PASS ✓
ANSI Z80.3:2018: PASS ✓

CIE 1976 L*a*b* Color (D65)

L* (lightness): 84.31
a* (red-green): 5.65
b* (yellow-blue): 26.98
CIE D65 (x,y): 0.370 · 0.381

Signals — Q LED / Incandescent

Q Red: 1.18 / 1.18 ✓
Q Yellow: 1.13 / 1.10 ✓
Q Green: 0.78 / 0.96 ✓
Q Blue: 0.65 / 0.78 ✓

Frequently asked questions

FAQ

Can I use them while driving? +

Yes. The yellow Clarks are certified for road use under EN ISO 12312-1:2022. With a Tv of 66.41% and correct recognition of red (1.18), yellow (1.13), and green (0.78) signals, they meet all the requirements of the European standard for daytime driving.

What time are they ideal for? +

They are an all-day use lens. With 66.41% Tv and Category 1, they are perfect for both indoor use (office, screens) and outdoor use in variable light. For night use and maximum blue light blocking, complement them with the red lens Clark glasses.

How much blue light do they actually filter out? +

Tsb 37.21% in the 380–500nm band, meaning they filter 63% of blue light from screens, LEDs, and artificial urban light, while maintaining a visual transmission of 66% that does not darken the surroundings.

What's the difference with the red-lens Clarks? +

Yellow Clark glasses have 66.41% VLT and 37.21% BPF — designed for daytime use, screens, and driving. Red Clark glasses have 22.03% VLT and 0.27% BPF — almost total blue light blocking for nighttime use and circadian rhythm protection. Each is optimized for a different time of day.

CLARK