🔴 670nm Red Light Research

Research has investigated long-wavelength red light, including 670nm, in relation to retinal function, mitochondrial activity and visual performance.

One UCL-led human study published in Scientific Reports investigated a single 3-minute morning exposure to 670nm light and measured colour-contrast sensitivity in adults aged 37–70. The study reported improved colour-contrast sensitivity after morning exposure, while afternoon exposure did not produce the same result.

These findings are research observations and should not be interpreted as a guarantee that a consumer wellness product will produce the same outcome.

🔵 480nm Blue Light Research

Short-wavelength light around 460–480nm has been widely studied in relation to non-visual light responses, including alertness and circadian regulation.

Research findings depend on wavelength, intensity, duration and timing of exposure. Blue-enriched light is generally more appropriate for daytime routines than for use immediately before sleep.

⚡ 40Hz Gamma-Frequency Research

40Hz sensory stimulation has become an active area of neuroscience research. Studies have investigated visual and audiovisual stimulation, gamma-band neural activity, neural entrainment, connectivity and other biological outcomes.

Early influential research, including the 2016 Nature study by Iaccarino et al., was conducted in mouse models. Subsequent human feasibility and pilot studies have investigated safety, tolerability, neural entrainment and exploratory outcomes.

Human evidence remains limited and research protocols vary. Results from laboratory or clinical studies should not be interpreted as proof that a consumer wellness product can diagnose, prevent or treat a medical condition.

🔴 670nm Red Light

1. Select the 670nm Red configuration.
2. Use in the morning after waking.
3. Keep your eyes open during the intended session.
4. Use approximately 15 minutes per session.
5. Use 2–3 times per week as part of a consistent routine.

🔵 480nm Blue Light

1. Select a configuration containing 480nm Blue.
2. Use primarily during morning or daytime hours.
3. Start with approximately 20–30 minutes.
4. Avoid unnecessary blue-enriched light close to bedtime.

⚡ 40Hz White Light

1. Select a configuration containing 40Hz White.
2. Use at a comfortable brightness level.
3. Suggested total exposure is up to 1 hour per day.
4. You may divide the daily exposure into shorter sessions, such as 30 minutes × 2 or 15 minutes × 4.
5. Stop use if the flickering light causes discomfort.

Do all four light technologies come in one pair?

No. This is the most important thing to understand before ordering.

There are four different product configurations. Each pair contains only the light combination selected when you place your order.

What is the difference between the four options?

The four configurations are:

• 670nm Red Only
• 670nm Red + 40Hz White
• 670nm Red + 480nm Blue
• 480nm Blue + 40Hz White

Is the 670nm Red Only version the same as V2.0?

The 670nm Red Only configuration uses the same core light configuration as the previous V2.0 design, but this new product uses an all-black exterior design.

Please check the individual product specifications for any other physical or packaging differences.

Is the Red + Blue version the same as V1.0?

The 670nm Red + 480nm Blue configuration uses the same core red-and-blue light combination as the previous V1.0 design, now presented in the new all-black product family.

What does 40Hz mean?

40Hz means that the light pattern is repeated at a frequency of 40 cycles per second. 40Hz sensory stimulation is being studied in neuroscience research involving gamma-frequency neural activity.

Can 40Hz light treat Alzheimer's disease?

No medical treatment claim should be inferred from this product. 40Hz sensory stimulation is an active area of research, but consumer light wellness products should not be considered a treatment for Alzheimer's disease or other neurological conditions.

Can I use the blue light at night?

We recommend using the blue-light configuration during morning and daytime hours. Blue-enriched light close to bedtime may interfere with circadian timing and sleep for some people.

Can I wear the glasses over prescription glasses?

The glasses are designed to fit over many standard prescription glasses. Individual fit depends on the size and shape of your prescription frames.

Can I use 40Hz light if I am sensitive to flashing lights?

Individuals who are sensitive to flashing or flickering light should not use the 40Hz configuration without appropriate professional advice. Stop immediately if you experience discomfort, dizziness, headache, visual disturbance or other unusual symptoms.

• Product: Lukirch Light Wellness Glasses
• Exterior: All-Black Design
• Available Configurations: 4 light combinations
• Red Light: 670nm
• Blue Light: 480nm
• 40Hz Light: White light, rhythmic 40Hz stimulation
• Design: Wearable and portable
• Power: Built-in rechargeable battery
• Operation: Cordless during use
• Eyewear Compatibility: Designed to fit over many regular prescription glasses
• Safety: Applicable configurations evaluated according to IEC 62471 photobiological safety standards

IEC 62471 is an international standard used to evaluate the photobiological safety of lamps and lamp systems.

It provides a framework for assessing potential photobiological hazards associated with optical radiation from light-emitting products, including LED systems.

Lukirch provides applicable IEC 62471 test documentation so customers can review the relevant photobiological safety information for the product configuration.

• Read the user instructions before use.
• Use the glasses only as directed.
• Blue light is intended primarily for morning and daytime routines.
• Avoid unnecessary blue-enriched light exposure close to bedtime.
• 40Hz flickering light may cause discomfort in some individuals.
• Individuals with a history of photosensitive seizures or strong sensitivity to flashing/flickering light should avoid the 40Hz configuration unless cleared by an appropriate healthcare professional.
• Stop use if you experience discomfort, dizziness, headache, visual disturbance or other unusual symptoms.
• Individuals with existing eye conditions should consult an eye-care professional before using light-emitting devices.

This product is intended for general wellness use and is not intended to diagnose, treat, cure or prevent any disease.

Research findings discussed on this page do not establish that this consumer product produces the same outcomes observed in laboratory or clinical studies.

• Warranty: 1 year
• Friendly customer support from the help@lukirch.com
• Portable wearable design for convenient everyday use.