What is the difference and why the right chip construction makes the real difference

Red light therapy is a popular and scientifically proven treatment method used for skin improvement, muscle recovery, pain relief, and support of mental and cellular processes. However, not every red light therapy lamp is the same.

One of the most important, yet often misunderstood, factors is the way the LED chips are constructed. The difference between single-chip LEDs and dual-chip LEDs, in particular, significantly impacts the effectiveness of the therapy.

In this blog, we clearly explain what single and dual LED chips are, how they distribute light, why 660 nm red light and 850 nm near-infrared light should be the focus , and which chip construction provides the most consistent results in practice.

What is a single-chip LED?

With single-chip LEDs, each LED emits a specific wavelength. An LED is therefore either red light (e.g., 660 nm) or near-infrared light (e.g., 850 nm).

A red light therapy lamp with single-chip LEDs consists of an array of several LEDs, each with its own wavelength.

In practice this means:

• Some LEDs only emit red light
• Other LEDs only emit infrared light

Advantages of single-chip LEDs

Simple and clear technology
Easy to check wavelength distribution
Clear separation between red and infrared

Disadvantage in practice

The light is not distributed evenly everywhere.

Because not every LED operates at both depths, areas often develop with primarily red light and other areas with primarily infrared light. As a result, the body doesn't receive the same stimulus everywhere , which can limit the consistency of the therapy.

What is a dual-chip LED?

With dual-chip LEDs, a single LED housing contains two separate light sources , each with its own wavelength. A single LED can therefore emit two types of light simultaneously.

What is important here is which wavelengths are combined.

For example, some dual-chip systems combine:

• 630 nm + 660 nm (both red light)

Combining other systems:

• 660 nm red light + 850 nm near-infrared light

That difference is crucial.

Why dual-chip LEDs can be a big technical advantage

When applied correctly , dual-chip LEDs provide a significant advantage over single-chip systems.

Each active LED then contributes to both superficial and deep effects.

This means:
No separate “red zones” and “infrared zones”
The same combination of red and infrared light everywhere
Constant stimulation of skin and deeper tissues

The body thus receives an even and predictable light stimulus over the entire treatment surface.

Why combining Red (e.g. 660 nm) and Near Infrared (e.g. 850 nm) is deliberately better

Not all dual-chip combinations are equally effective. Combining two similar wavelengths within the same spectrum , such as two red wavelengths, increases the number of wavelengths on paper, but in practice contributes little to improving functional coverage.

The power of dual-chip LED technology lies in combining red light and near-infrared light within a single LED chip . By pairing a more superficial red wavelength with a more deeply penetrating infrared wavelength, each LED becomes more functionally relevant.

That is why we consciously choose dual-chip combinations in which red light and near-infrared light come together , for example:

• a red wavelength combined with a deep near-infrared wavelength
• or a combination that addresses both skin processes and deeper cellular processes

This approach ensures that each active LED contributes to both superficial and deep action , distributing light evenly and stimulating the body consistently during every session.

The practical advantage of this

Each LED works simultaneously at skin level and deep in the tissue
No areas with only red or only infrared light
Always a consistent distribution during every session

This ensures that the therapy has the same quality and depth of effect everywhere , regardless of where you stand or sit in front of the panel.

The role of 660 nm and 850 nm in red light therapy

Within scientific research , 660 nm red light and 850 nm near-infrared light are considered the most researched and widely applicable wavelengths in red light therapy.

These wavelengths are associated with:

• stimulation of collagen production
• improvement of skin structure
• muscle and joint recovery
• support of mitochondrial energy production

For an effective red light therapy lamp it is therefore essential that these two wavelengths together make up at least approximately 70% of the total light spectrum .

By combining 660 nm and 850 nm within one dual-chip, this ratio is automatically better controlled and the therapeutic basis remains intact.

Misleading claims about “double wattage”

Some manufacturers suggest that dual-chip LEDs provide "more power" or "double the wattage." This is technically incorrect.

The electrical output of a lamp doesn't change depending on the type of LED chip. What changes is how the available power is distributed across biologically relevant wavelengths .

What ultimately counts is not the wattage on paper, but:
how evenly the light is distributed
which wavelengths are dominantly present
how consistently the body is stimulated

What does this mean for you as a user?

A well-designed dual-chip red light therapy lamp provides:
more consistent results
better coverage per session
a logical combination of superficial and deep action

You don't have to choose between red or infrared, and you're not dependent on specific "spots" for effect. Every session works as intended.

Conclusion: it's not the chip, but the design that makes the difference

Both single-chip and dual-chip LEDs can be effective for red light therapy. The real difference lies in how the technology is applied .

Single-chip LEDs are simple and uncluttered.
Dual-chip LEDs are more powerful in design, provided they deliberately combine red and near-infrared .

By choosing a dual-chip design with red and infrared light in each LED , an even, consistent, and biologically logical light distribution is created. This is precisely what makes the difference between a lamp that "gives light" and a lamp that delivers what red light therapy promises .