Light Source Circuit for Skin Tone Enhancement
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Solution Overview
Problem
Current illumination apparatuses fail to effectively improve the appearance of skin color, making it difficult to ensure a good skin tone in various lighting environments.
Innovation Solution
A light source circuit and illumination apparatus comprising a red light emitting portion, a blue light emitting portion, and a yellow-green light emitting portion, with specific peak wavelengths and intensity ratios, are used to emit light that meets certain conditions in the CIE1931 color coordinate system, improving the sense of skin color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional illumination apparatuses are used, then general lighting is provided, but the skin color appearance cannot be effectively improved
Solution Approach 1:
The illumination apparatus divides the light source into three independent emitting portions (red, blue, and yellow-green), each responsible for specific wavelength ranges. This segmentation allows precise control over spectral composition to optimize skin color appearance while maintaining manageable manufacturing complexity through modular design
Solution Approach 2:
The patent specifies precise parameter ranges for peak wavelengths (red: 600-640nm, blue: 440-460nm, yellow-green: 525-565nm) and intensity ratios (blue: 65%-100% of red, yellow-green: 35%-65% of red). By optimizing these parameters within defined ranges, the apparatus achieves superior skin color enhancement effect
2Illumination intensity
If multiple light emitting portions with specific wavelength ranges are used, then the skin color appearance is improved, but the device complexity increases
Solution Approach 1:
The light source circuit is segmented into three independent emitting portions, each with specific wavelength characteristics. This modular segmentation enables precise spectral control for skin color enhancement while maintaining relatively simple individual component designs that can be manufactured separately and assembled
Solution Approach 2:
Each emitting portion serves multiple functions: the red light portion provides both illumination and skin tone enhancement, the blue light portion contributes to whitening effects, and the yellow-green light portion enhances overall brightness. This multi-functionality reduces the need for separate specialized components
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 illumination light emitted by the apparatus enhances the perceived skin color, making it appear healthier, more attractive, and natural, with improved white, ruddy, and health degrees, as demonstrated by spectral energy distribution diagrams and color coordinates within the specified ranges.
Implementation Method 1
a red light emitting portion, a blue light emitting portion, and a yellow-green light emitting portion. The red light emitting portion is configured to emit red light with a peak wavelength in a range of 600 to 640 nm. The blue light emitting portion is configured to emit blue light with a peak wavelength in a range of 440 to 460 nm. The yellow-green light emitting portion is configured to emit yellow-green light with a peak wavelength in a range of 525 to 565 nm.
Data Source
AI summary
An example of the present disclosure discloses a light source circuit and an illumination apparatus using the same. By adjusting peak wavelengths, peak intensity and color coordinates of blue light, red light and yellow-green light in the illumination light emitted by the light source to preset ranges, an effect that the illumination light emitted by the light source circuit can improve the sense of skin color of people is achieved.