UV Nail Curing Apparatus with Dual-Direction LED Array

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing nail gel curing apparatuses using UV LEDs inadequately cure the thumbnail due to its anatomical positioning, requiring users to reposition their hand or cure the thumb separately, doubling the curing time and disrupting the application sequence.

Innovation Solution

Incorporating an additional UV light source positioned at the same angle and distance as the main UV source, with LEDs on a horseshoe-shaped base and upright sections, ensuring uniform irradiation of all fingernails and the thumbnail simultaneously.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single UV light source is used to irradiate fingernails from above, then the fingernails are adequately cured, but the thumbnail does not receive adequate irradiation due to its anatomical positioning

Engineering Contradiction:
Improvecuring adequacyVSAvoidhand positioning requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The UV illumination system is segmented into two distinct components: a top board with LEDs for irradiating the four fingernails, and a base with upright sections containing additional LEDs for irradiating the thumbnail. This segmentation allows each component to be optimized for its specific target area, ensuring adequate curing of both fingernails and thumbnail simultaneously without requiring hand repositioning.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the thumb is cured separately from the four fingers, then adequate irradiation is achieved for the thumbnail, but the total curing time doubles

Engineering Contradiction:
Improvecuring adequacyVSAvoidtotal curing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The illumination system merges the curing of fingernails and thumbnail into a single simultaneous operation. The top board LEDs and base upright section LEDs are activated together, allowing all five nails to receive UV irradiation at the same time. This combining eliminates the need for sequential curing operations, reducing total curing time from four minutes to two minutes while maintaining adequate curing for all nails.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If separate curing of thumb and fingers is implemented, then adequate irradiation is achieved, but the application sequence is disrupted

Engineering Contradiction:
Improvecuring adequacyVSAvoidapplication efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system merges the curing operations for all nails into a single unified process. By positioning LEDs on both the top board and base upright sections to illuminate all five nails simultaneously, the application sequence remains intact and efficient, eliminating the need to interrupt the workflow for separate thumb curing operations.

Inventive Principle:
Principle #5Merging (Combining)

4Reliability

If additional UV light sources are added to irradiate the thumbnail, then uniform curing is achieved for all nails, but the device complexity increases

Engineering Contradiction:
Improvecuring uniformityVSAvoidUV source configuration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The illumination system applies local quality by positioning UV light sources at different locations (top board and base upright sections) with different orientations relative to each nail type. The top board LEDs are positioned for optimal illumination of the four fingernails, while the base upright section LEDs are positioned to illuminate the thumbnail, ensuring each area receives appropriate irradiation intensity and angle.

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration allows for simultaneous and uniform curing of all nails, reducing the total curing time by half and maintaining the sequence integrity, thus improving efficiency and reducing the risk of application mistakes.

Implementation Method 1

the source of the UV radiation, whether LEDs or other source of UV radiation

Methodology Applied
Scientific EffectLight Emitting Diode: Light Emitting Diode

Implementation Method 2

A nail gel curing apparatus which operate by using a plurality of light emitting diodes (LEDs) operating at an ultra-violet (UV) wavelength suitable for curing gels

Methodology Applied
Scientific EffectUV radiation: Electromagnetic Induction

Implementation Method 3

the gel applied to the fingernails being cured

Methodology Applied
Scientific EffectPhotopolymerization: Photopolymerisation

Data Source

PatentUS8466442B2Nail gel curing apparatus
Publication Date: 2013.06.18 WELLA OPERATIONS US LLC
  • US8466442B2 patent drawing
  • US8466442B2 patent drawing
  • US8466442B2 patent drawing

AI summary

An apparatus to provide ultra-violet (UV) irradiation to cure a gel nail. The apparatus includes a top section and a bottom section, the top and bottom sections forming a unit with an opening sized to allow at least a portion of a human hand to be inserted. An array of light emitting diodes (LEDs) disposed in the unit to emit UV irradiation in a first direction when supplied with electrical power. At least one LED is disposed in the unit to emit UV irradiation in a second direction when supplied with electrical power. The first direction is approximately perpendicular to the second direction such that fingernails and a thumbnail of a human hand inserted into the opening substantially simultaneously receive amounts of UV irradiation sufficient to cure a UV curable gel applied to the fingernails and the thumbnail at approximately the same time.