Photopolymerization for Nail Coating Curing
3 patents in this list
Updated:
UV-LED nail curing systems must deliver precise photon doses to achieve complete polymerization of gel coatings. Current systems operate in the 365-405nm wavelength range, with typical irradiance levels between 2-10 W/cm², yet achieving uniform curing across the curved nail surface while preventing thermal damage to surrounding tissue remains a significant engineering challenge.
The core challenge lies in balancing rapid cure times against heat generation while ensuring complete cross-linking throughout the coating's depth profile.
This page brings together solutions from recent research—including trapezoidal LED array designs with integrated temperature sensing, time-division control systems for targeted exposure, and intelligent power management for consistent UV delivery. These and other approaches focus on optimizing cure uniformity while protecting client comfort and safety during the treatment process.
1. LED-Based Nail Polish Curing Device with Targeted Ultraviolet Emission
OREAL, 2015
Radiation nail polish curing device using LEDs to more easily and consistently cure nail polish compared to conventional UV curing lamps. The device has an application surface for holding the user's hands/feet and LED sources emitting ultraviolet light to cure the nail polish. Each LED illuminates a specific area on the application surface. Using LEDs provides better control and focus compared to conventional UV sources that disperse more.
2. UV Nail Polish Curing Device with Symmetrical Illumination and Shielded Exposure Design
OREAL, 2015
A device for curing nail polish using UV light that minimizes exposure of uncoated body parts to UV radiation. The device has sources of UV light to cure nail polish. The user places one hand at a time in the device to cure the polish. The design symmetrically illuminates the fingernails while shielding other body parts from direct UV exposure. This reduces the risk of UV exposure to uncoated areas compared to traditional UV nail curing devices.
3. Compact UV Curing Device with Grid-Structured LED Array and Reflector for Enhanced UV Emission
Soul International Co., Ltd., SOUL INTERNATIONAL CO LTD, 2014
Portable UV curing device for quickly curing and sterilizing painted surfaces like nails using UV light. The device has a compact body with a front lens unit containing multiple UV LEDs. It can cure nails painted with UV-curing materials faster than traditional lamps by increasing UV intensity. The LEDs are arranged in a grid or honeycomb structure to concentrate UV rays. A reflector surrounds the LEDs to prevent UV loss. The device can cure multiple nails at once and has adjustable intensity and curing time. It is portable, has a battery, and emits UV for a set time to avoid skin exposure.
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