Light Exposure Apparatus with Dual-Wavelength Spectrum

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Solution Overview

Problem

Conventional light exposure apparatuses that emit blue light to adjust biological rhythms result in a user's face appearing pale and unnatural due to the lack of red light emission, which affects the appearance when viewed by others.

Innovation Solution

A light exposure apparatus that combines blue light and red light sources, with the blue light emitting in the range of 445 nm to 500 nm and red light in the range of 600 nm to 680 nm, where the intensity of the red light is between 0.1 to 0.5 times that of the blue light, to create a more natural appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If blue light is emitted to activate the user's body and adjust biological rhythm, then the biological effect is improved, but the user's appearance becomes pale and unnatural

Engineering Contradiction:
Improvebiological rhythm adjustment effectVSAvoidpale and unnatural appearance
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the spectral parameters of the emitted light by adding red light component with specific intensity ratio (0.1-0.5 relative to blue light peak). This parameter modification maintains the blue light's biological activation effect while adding red light to prevent the pale appearance, thus resolving the contradiction between biological effect and appearance quality

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite light spectrum by combining blue light (445-500 nm) and red light (600-680 nm) sources. This composite approach allows the light to simultaneously achieve biological rhythm activation (from blue light) and natural appearance maintenance (from red light component), resolving the contradiction between the two opposing requirements

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If red light is added to improve appearance, then the natural appearance is improved, but the light spectrum complexity increases

Engineering Contradiction:
Improvenatural appearanceVSAvoidlight spectrum composition
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies local quality by selectively adding red light only in the specific wavelength range of 600-680 nm with controlled intensity (0.1-0.5 relative to blue light peak). This targeted approach improves appearance without unnecessarily complicating the overall light spectrum, maintaining simplicity while achieving the desired effect

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

The combination of blue and red light improves the user's appearance by preventing a pale or flushed look, making the user appear natural when viewed by others, while also enhancing directivity and reducing light dispersion.

Implementation Method 1

a blue light source which emits blue light... The blue light has a peak wavelength in a wavelength range from 445 nm to 500 nm

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Implementation Method 2

a red light source which emits red light... The red light has a peak wavelength in a wavelength range from 600 nm to 680 nm

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentUS10420954B2Light exposure apparatus
Publication Date: 2019.09.24 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US10420954B2 patent drawing
  • US10420954B2 patent drawing
  • US10420954B2 patent drawing

AI summary

A light exposure apparatus emits light which activates the body of the user. The light exposure apparatus includes a blue light source which emits blue light and a red light source which emits red light. The light includes blue light and red light. Blue light has a peak wavelength in a range from 445 nm to 500 nm. Red light has a peak wavelength in a range from 600 nm to 680 nm. The intensity of the peak wavelength of blue light is the strongest in the spectrum of the light, and the intensity of the peak wavelength of red light is the second strongest in the spectrum of the light. The relative intensity of the peak wavelength of the red light with respect to the peak wavelength of the blue light is in a range from 0.1 to 0.5 inclusive.