How a Rectangular Laser Fiber Improves Skin Treatments

A laser skin treatment tool that uses a special rectangular fiber optic cable to deliver uniform, square-shaped beams from two different laser types at once.

What it covers

This patent describes a handpiece for skin treatments that uses a single rectangular-shaped optical fiber to channel light from two different laser sources. By using a rectangular core rather than a traditional circular one, the device creates uniform, sharp-edged rectangular light patterns on the skin. The system includes an illuminator to help the operator see the treatment area and sensors that track the handpiece's position. This ensures the lasers only fire when the device is correctly aligned with the target area, preventing overlap or missed spots.

What it doesn't cover

• —Does not cover circular or non-rectangular laser beam profiles.
• —Does not cover systems that lack a secondary illuminator for pre-treatment visualization.
• —Does not cover laser systems that use a single wavelength source.
• —Does not cover non-contact laser systems that lack position-sensing synchronization.

The clever bit

The use of a single-core rectangular optical fiber to homogenize and shape the output of two distinct laser wavelengths (like Nd:YAG and Alexandrite) simultaneously, ensuring uniform intensity across the entire rectangular footprint.

Why it matters

In dermatology, overlapping laser pulses can cause burns or uneven results, while gaps lead to ineffective treatment. By forcing the laser light into a precise rectangular shape, this invention allows practitioners to 'tile' the treatment area like a grid, which is significantly more efficient and safer than trying to overlap circular beams.

Real-world examples

• 1.Dermatological laser hair removal systems
• 2.Skin resurfacing devices
• 3.Pigmented lesion removal tools